Nghiên cứu thử nghiệm công nghệ tách vi sóng để xử lý nhũ tương dầu/nước trong nước thải nhiễm dầu ở Việt Nam

Nghien cuu thu nghiem cong nghe tach vi<br /> song de xu ly nhG tuong dau/nuoc trong<br /> nuoc thai nhiem dau o Viet Nam<br /> ThS. Le Thj Phu'ang<br /> Vien Diu khi Viet Nam<br /> ThS. Tran DLFC Minh<br /> Hoc vien Phdng khdng • Khdng quan<br /> <br /> Tom t i t<br /> <br /> Nw&e thai nhiem dau bj nhu twang hoa la mot phan quan trgng eiia nw&e thai eong nghiep va dwgv<br /> sinh ra tir eae hoat dgng san xuat eong nghiep khac nhau, dae biet la nganh cong nghiep dau khi.<br /> Trong ngi dung bai bao nay, ehiing toi neu khai quat ve nw&e thai nhiim dau, cong nghe tach vi<br /> song, sir dung eong nghe vi song di taeh va thu hoi dau tip nw&e thai nhiim dau; qua trinh thiet ke, che<br /> tao thiet bj vi song di pha nhu twang trong nw&e thai nhiem dau; dong th&i mo ta kha day dii viec thir<br /> nghiem taeh nhu twang dau/nw&e bang phwang phap vi song dien tir va so sanh hieu qua thu dwg'C v&i<br /> phwang phap tuyen noi kit hg'p chat pha nhu. Thi nghiem eho thay phwang phap taeh nhu twang<br /> dau/nw&e trong nw&e thai nhiim dau bang phwang phap vi song dien tir eho kit qua rat tot, nhanh, tiet<br /> kiem va dap wng day du tieu ehuan moi trw&ng eua Viet Nam va khong thua kem cac phwang phap tach<br /> truyen thong khae. Dieu nay, m& ra then vgng eho viee su' dung edng nghe vi song trong viee tach va<br /> thu hoi dau tip nw&e thai nhiem dau & Viet Nam trong twang lai gan.<br /> <br /> <br /> DAU K H i - 3 6 8/2010 47<br /> A N TOAN - MOI TRUONG DAU KHi<br /> <br /> <br /> <br /> <br /> M a dau - Mu'c dp nhu hda d i u bj nhu hda trong nudc thai.<br /> <br /> Nude thai ndi ehung va nudc thai nhiim d i u Sy phan b l kich thude gipt va trang thai nhu<br /> (NTND) ndi rieng la mdt trong nhirng tae nhan chinh tuang eho phep ehung ta lya chpn phuang phap tach.<br /> gay ra d nhiem mdi trudng ma t h i gidi da va dang Van t i c gipt va nong dp d i u eho phep chung ta lya<br /> quan tam xir ly. O l x(j/ ly va thu hdi d i u trong nudc chpn kich thude heng ciia he thing va dy bao dugc<br /> thai nhiim d i u (bao gom d i u d dang nhu tuang sy van hanh eiia he thing ma ta lya ehpn.<br /> diu/nude) eae edng nghe sau da va dang dugc sir * Sw phan bd kich thw&c giot<br /> dung: Sy phan b l kich thude gipt trong NTND la ylu to<br /> - Cdng nghe tach vat ly d l quylt djnh d i n tinh hieu qua sy van hanh cua thiet<br /> - Cac phuang phap taeh hda hpe bj taeh dIu/nude eiia nude thai. Xac dinh sy phan bo<br /> kich thude gipt la de lya ehpn he thing tach bdi vi m6i<br /> - Cac phuang phap dien va vi sdng dien tir<br /> mdt kich thude gipt se cd sy van hanh khac nhau<br /> - Cae phuang phap vi sinh...<br /> trong qua trinh tach ehung ra khdi nude.<br /> - Sir dung k i t hgp cae phuang phap vdi nhau.<br /> Cac gipt d i u khdng phai la cac hat that, dd chi la<br /> 1. Khai quat ve nu'O'c thai nhiim dau va cong nghe quy ude chung d l xir ly cac gipt rieng le ciia diu bj<br /> tach vi song phan tan trong nudc dudi dang cae hat hinh c l u . Tuy<br /> thude vao dudng kinh eiia cac gipt ma chung dugc<br /> Ngay nay, t h i gidi da quan tam va d i u tu nhiiu<br /> chia ra thanh mpt trong b i n loai sau day [2]:<br /> edng sire, t i i n eiia d l phat t h i n cac cdng nghe x\j ly<br /> d i u va nhu tuang d i u trong NTND. Oac biet yeu c l u - Vdi cac gipt dudng kinh Idn han hoae bing<br /> bao ve mdi trudng s i n g ciia con ngudi ngay cang cao 250/vm, d i u duge tap hgp lai thanh dau ty do noi len<br /> nen gidi han ndng dp cac hydrocaebon trong NTND b l mat nude.<br /> dugc phep thai ra mdi trudng ngay cang nghiem khIc. - NhO'ng gipt d i u cd dudng kinh tir 30pm d i n nho<br /> Tuy tu'ng quoe gia se d l ra cae gidi han thai cho heng han 250pm dugc coi nhu eae gigt d i u dan gian.<br /> minh. 6" Viet Nam hien nay thi NTND phai dugc xir ly - Cae gipt d i u cd dudng kinh tii' 1 d i n nhd han<br /> tdi ning dp eua d i u , md 5ppm thi mdi dugc thai ra 30pm thi duge xem la nhu tuang d i u .<br /> mdi trudng. O i l vdi cac hoat ddng d i u khi d ngoai<br /> - Cac gipt d i u cd dudng kinh nhd han 1pm thi<br /> bien thi ham lugng d i u trong nudc thai phai dugc xa<br /> dugc coi la phin d i u hda tan trong nude.<br /> ly d i n 15ppm cho khu vyc ndi thuy va 40ppm eho<br /> vung bien khai xa. DAUHbATAN<br /> <br /> <br /> 1.1. Cae dae trwng ehinh eiia NTND<br /> <br /> C i n phai hieu rang ban chit eiia nudc thai se<br /> quylt djnh sy lya chpn thilt bj taeh diu/nudc nao<br /> dugc SU' dung va cho phep chung ta dy doan hieu<br /> •^° Ol/dTNG K I N H GIpT (\1 m) ^'<br /> nang cua thilt bj taeh dd. Mpt thiet bj dugc thilt ke d l<br /> tach d i u ty do thi khdng t h i dung d l tach dugc nhu Hinh 1. Mdi lien he giira duang kinh giot<br /> tuang dIu/nudc, ngugc lai se khdng cd hieu qua va va trang thai tdn tai ciia diu trong NTND<br /> t i n kem rit nhiiu khi dung cae thilt bj tach nhu tuang<br /> % gipt<br /> dIu/nudc eho viec taeh d i u ty do tir nudc thai [1].<br /> <br /> •• •<br /> 50<br /> Cd 4 thdng s l cua NTND cho phep chung ta lya<br /> 40<br /> chpn cdng nghe xu' ly d i u (bao g i m nhu tuang d i u )<br /> ehinh xae eho b i t ky loai nudc thai nao [1]. B i n thdng<br /> so dd la:<br /> 30<br /> 20<br /> 10<br /> 0<br /> • • •<br /> _ ^ _ ^ _ ^ _ ^<br /> — O i r t n g kinh g((jl( u r n )<br /> 30 60 150<br /> - Sy phan bd kich thude gipt d i u . 90 120<br /> <br /> - Van toe gipt.<br /> Hinh 2. Su lien he giira phin tram cac giot diu<br /> - Nong dp cua d i u trong nude thai. theo duang kinh giot<br /> <br /> <br /> 48 DAU KHf - 36 8/2010<br />  PETROVIETNAM<br /> <br /> <br /> <br /> <br /> Hinh 2 la dd thj chi sy tuang quan giii'a s l lugng cac gipt dugc sinh ra do sy chenh lech v l ty trpng<br /> cae gipt va p h i n tram ciia mdt trong nam kich thude heng giii'a d i u va nudc.<br /> gipt eho mpt NTND quy \jpac. O l thj nay eho ehung ta o l xac djnh ty trpng d i u trong NTND thi d n phai<br /> c i n quan tam tdi nhirng gipt d i u d day tir 30 - 60pm, bilt loai dau nao t i n tai trong nude thai. Thdng thudng<br /> nhung s l lugng eua eae gipt d i u trong day kich thude trong nude thai tap hgp nhiiu loai d i u khac nhau.<br /> thi khdng nhlt thilt phan anh t h i tich eua dau trong<br /> Khi khdng t h i bilt ehi tilt loai d i u nao t i n tai trong<br /> day dd. Cac gipt dau Idn chira nhiiu d i u han cae gipt<br /> nudc thai thi ta cd the gia thuylt d i u ton tai trong<br /> d i u nhd vi t h i tich d i u la ham s l luy thira 3 eua<br /> nudc thai se cd ty trpng gan gilng vdi ty trpng ciia mpt<br /> dudng kinh gipt. O trong d l thj nay cung cho ta t h i y<br /> trong cac chit nhu: D i u thd, d i u d i t Id, d i u hda,<br /> sy biln doi cac gipt d i u vdi p h i n tram eiia tong t h i<br /> xang, benzen...[2].<br /> tich d i u , d i i u nay eho ehung ta hilu bilt thyc t i i n han<br /> * NhO twang diu trong nw&c thai nhiim diu<br /> v l nudc thai.<br /> Nhu tuang la mot hon hgp cua hai chit Idng khdng<br /> * Van tdc giot<br /> t h i trpn l i n vdi nhau, trong dd cac hat nhd eua mot<br /> Trpng lye la y l u t l cd y nghTa sd 1 trong viec tach trong hai chat Idng nay (la pha phan tan) phan b l ben<br /> dIu/nude. Tieu chuin de xae djnh hieu qua cua he trong chit Idng khac (gpi la pha lien tuc).<br /> thing la 2 van tic. Van toe noi cua d i u (V^j^) va van t i c<br /> Nhu tuang trong cdng nghiep d i u khi cd hai loai:<br /> ciia ddng NTND(Vn;j(yc.) kl^i nudc thai di qua buing tach.<br /> - Nhu tuang d i u trong nudc (Oil in water - OW).<br /> 1<br /> , - Nhu tuang nude trong d i u (Water in oil - WO).<br /> <br /> Dau .<br /> Nhu tuang d i u trong nude la d i i tugng de cap<br /> <br /> Diiu vi ninVc<br /> eiia bai nay.<br /> Vi>l„ Uir&c<br /> • Nhu tuang dau trong nude dugc chia thanh 2 loai:<br /> Nhu tuang b i n va nhu tuang khdng b i n .<br /> —*"^3 - Nhu tuang b i n : Nhu tuang dugc hinh thanh khi<br /> n^ Vn>»*6<br /> «»» ed sy hien dien cua chit hoat dpng b l mat (nhu xa<br /> phdng, cae chit hoat ddng b l mat...) trong NTND<br /> Hinh 3. Biiu diin duang di ciia cac giot diu trong mdt hoae la nudc thai dugc hinh thanh d nhu'ng cdng<br /> budng luu ly tuang doan cd eae chuyin dpng r l i manh. Khdng the tach<br /> d i u trong nhu tuang b i n ra khdi nude thai bing cac<br /> Tu van toe d i u (V^iJ cd t h i xac djnh thdi gian cdng nghe taeh ca hpe thdng thudng. Nhu tuang d i u<br /> (T(J4U) c i n thilt eho cac gipt d i u noi len mat nudc hoae loai nay phai dugc pha nhu bing hda chit hoae bing<br /> d i n cae dTa ngung tu. N l u thdi gian T^^u nho han thdi cac phuang phap dien, dien tir khac...<br /> gian ciia nudc thai dugc luu trong thilt bj taeh (thdi<br /> - Nhu tuang khdng b i n ed t h i hieu dan gian la loai<br /> gian luu - Tnu,c,c)- Khi dd v l mat ly thuylt cac gipt d i u<br /> nhu tuang ed t h i tach d i u ra khdi nudc thai bing cac<br /> se noi len mat nude va dugc thu gom.<br /> phuang phap ca hpe thdng thudng. Nhu tuang khdng<br /> Vn^,^,- bj chi phii bdi t i c dp ddng (Q) va kich thude b i n vi nhu tuang khdng duge on dinh do chit hoat<br /> vat ly buIng chinh ciia thilt bi tach g i m : Chilu dai (L), ddng b l mat hoae do cae khuly dpng ca hpe manh va<br /> chilu rdng (W) va chilu cao (H). Thudng cac buIng thdng thudng nhO tuang khdng b i n dugc tao thanh tu'<br /> chinh dugc thilt k l theo hinh chir nhat. cae hat d i u Idn han so vdi nhu tuang b i n .<br /> Van t i c noi eiia cac gipt d i u khi xuyen qua nudc Thdng thudng chung ta d n xac djnh loai nhu<br /> bj chi phii ehinh bai djnh luat Stocker. Ngoai ra cdn cd tuang nao t i n tai trong NTND trudc khi dua ra quylt<br /> mdt s l m l i lien he thu- d p eung anh hudng dang ke djnh sir dung he thing taeh nao d l taeh chung ra<br /> d i n van toe n l i ciia gipt nhu sy khuly trdn, sy ngung khdi NTND. Vien D i u khi My da phat then mpt<br /> tu, viec thao cac chat r I n khdi buIng tach va cae phuang phap d l xac djnh nhu tuang hda va phin<br /> chuyin dpng Brown. hda tan eua d i u trong NTND. Cd the tim phuang<br /> Thdng thudng y^ku la '^d^ ^am chinh eua djnh luat phap nay d tai lieu: "Determining of Suceptibility to oil<br /> Stocker, nhu'ng m l i lien he nay lien quan tdi van toe Separation". Theo tai lieu nay thi mpt sd huong d i n<br /> <br /> DAU KHi - s o 8/2010 49<br /> A N T O A N - MOI T R U d N G D A U KHi<br /> <br /> <br /> <br /> <br /> sau day cd the giup ta nhan bilt trang thai ciia nhu * Nong dd diu trong nw&c thai nhiim diu [3]<br /> tuang dau trong nudc: Mpt trong cac each phan doan he thing tacii<br /> - NhO'ng gipt d i u cd kich thude Idn thi nhu tuang dIu/nude ed hoat dpng t i i uu khdng la khao sat nong<br /> it b i n vO'ng. dp d i u trong nude thai sau khi duge xir ly. N l u nu'ac<br /> - Cae gipt d i u ed dudng kinh nhd han 10pm thi se thai sau khi qua he thing xir ly cdn chira lugng dau<br /> tao ra nhu tuang b i n ngay ea khi khdng cd sy hien han lOOppm thi ed t h i coi he thing nay khdng dat yeu<br /> dien eiia chit hoat ddng b l mat vi nhO'ng gipt d i u nhu d u . Trong khi viec bilt nong dp d i u trong nudc thai<br /> vay se n i l len b l mat NTND vdi t i c dp eye ky cham. da xir ly de phan doan kha nang van hanh ciia thiet bj<br /> thi viec bilt duge n i n g dp d i u trong nude thai cin xi)<br /> - N l u NTND duge l l y m i u va phan tieh lien tue se<br /> ly se giup ta ed nhu'ng quylt dinh quan trpng nhu can<br /> eho ta thdng tin ring kich thude cac gipt d i u trong<br /> hay khdng d n cac thilt bj xir ly dae biet d l thu hoi dau<br /> NTND la khdng thay doi. Khi dd ta ed the khang djnh<br /> tu' nudc thai va n l u cau tra Idi la cd thi cd t h i lya chgn<br /> nhu tuang eung se b i n b i t c h i p kich thude gipt d i u<br /> thilt bj cu t h i nao d l tham gia xir ly?.<br /> Idn hay nhd.<br /> M u l n xac djnh ham lugng d i u trong nude thi miu<br /> * Kha nang tich dien cua nhO twang<br /> d n phai giri tdi cac phdng thi nghiem chuyen nganh<br /> Giira eae mat phan each eua t i t ea eae chit r I n va<br /> d l phan tieh. Cue mdi trudng My (EPA) dua ra hai<br /> chat Idng ton tai mdt dp chenh lech dien ddng hpe<br /> phuang phap de xae djnh ham lugng d i u md va chat<br /> duge gpi la dien t h i Zeta. Day la y l u t l ehinh lam cho<br /> beo (FOG) trong nudc thai:<br /> cae chit keo b i n vO'ng. Neu them vao nhiiu ion da<br /> hda trj mang dien tieh ngugc chilu vdi eae hat keo thi - Xac djnh bang phuang phap khoi lugng (phuang<br /> se xay ra hien tugng phdng dien Zeta di kem vdi hien phap 413.1).<br /> tugng sa lang keo. - Xae dinh b i n g phuang phap h i n g ngoai<br /> (phuang phap 413.2). J<br /> Bo sung vao nudc thai cac ion ciia chit tao nhu se<br /> lam euln hut b l mat phan each dIu/nudc va truyin Viec lya chpn ap dung phuang phap phan tich<br /> dien tieh duang hay am eho moi gipt. Muc dp k i t tu nao d l phan tich mau tuy thupc nhirng thdng so ta can<br /> eua eae gipt giam d i n khi lye day tTnh dien giira cac thu thap va yeu d u ve dp chinh xac ciia cac gia trj mk\<br /> hat tang len. ta d n cd.<br /> <br /> Cac gipt d i u trong nhu tuang dIu/nudc thudng 1.2. Cong nghe taeh vi song de xw ly nhu tuvni<br /> tich dien am nhu dugc md ta d ly thuylt dien trudng dau/nw&e i<br /> 2 Idp. 6" trang thai nhu vay, cac gipt d i u khi du'ng<br /> 1.2.1. Khai quat cdng nghe tach vi sdng<br /> canh hoae d r i t g i n vdi mat phan Idp cd tich dien<br /> ngugc chieu (dien duang) thi chung se duge s l p x I p NhO'ng khai quat v l cdng nghe tach dugc trirr<br /> song song vdi mat phan each va tao nen Idp dien bay dudi day chii y l u tham khao tir san pham d$<br /> trudng ddi, dd chinh la nguyen nhan de cae gipt d i u quyin cua Cdng ty nghien eiru phat then thu hoi d l<br /> thudng d l y l i n nhau. khi Hoang Gia - IPRC (Houston - Texac, Hoa Kjf<br /> Cdng nghe taeh vi sdng da duge IPRC cho thi<br /> Thyc tien cho thiy viec phdng tranh sy tao thanh<br /> nghiem tai hien trudng cua Nha may Igc d i u Torrance<br /> nhu tuang trong NTND se t i t han la phat thin cac cdng<br /> ciia Exxon Mobil d California va dua vao sir dung trer<br /> nghe tach nhu hO'u hieu. Mpt each d l phdng hu'u hieu<br /> pham vi toan c l u thong qua mdt hgp d i n g thuang m^<br /> la giam thiiu t i i da lugng NTND bi khuly trdn manh. Vi<br /> giO'a IPRC va Exxon - Mobil. Ngay nay cac thilt bj t^c<br /> it bj khuly trpn manh se it cd ea hdi tao ra nhO'ng gipt<br /> vi sdng da dugc Exxon - Mobil va cac cong ty dau kh<br /> d i u ed kich thude qua nhd, dau se de dang taeh ra<br /> khac su' dung nhu la mpt trong cac phuang tien phi<br /> khdi NTND. Khi khong t h i tranh dugc sy khuly trpn<br /> nhu chinh cua cdng nghiep d i u khi.<br /> manh thi cung nen tranh sy hien dien ciia chit hoat<br /> ddng be mat trong NTND. Oilu nay cung cd nghTa se Nhu tuang dIu/nudc hoae nhu tuang nudc/dli»<br /> tao ra nhu'ng gipt d i u cd kich thude Idn. cd s i n trong d i u va nudc thai d eae nha may Ipc ho<br /> <br /> <br /> 5 0 DAU K H I - 3 0 8/2010<br />  PETROVIETNAM<br /> <br /> <br /> <br /> <br /> dau va trong nudc khai thae, trong d i u duge khai thae. Oac<br /> d i l m eua chung la ban d i u nhu tuang t i n tai vdi khii lugng<br /> nhd va de xCr ly, theo thdi gian ehung tieh tu lai, gia tang v l<br /> t h i tich va viec xir ly chung se khd khan han. N l u nhu tuang<br /> khdng duge xCr ly thi se dua tdi sy m i t mat hydrocaebon va<br /> gay ra sy d nhiem nguln nudc thai. Ngoai ra n l u nhu tuang<br /> dIu/nudc di qua b l mat cac thilt bj thi chung se lam hu hdng<br /> hay t i c nghen thiet bj dd. Nhu tuang cdn gay ra hien tugng<br /> an mdn va bao mdn thiet bj lam gia tang viec tieu thu nang<br /> <br /> ^''^wilii lugng. Vi vay nhu tuang se lam gia tang viec bao tri va bao<br /> dudng thiet bj. Chinh vi the, viec xir ly triet d l nhu tuang<br /> dIu/nude se dem lai Igi ich to Idn v l mdi trudng va nang<br /> lugng.<br /> Cac nhu tuang dau/nude thudng rat ben vQng va khd<br /> tach. Thdng thudng phai xir ly nhu tuang bing nhiet dp cao,<br /> bing hoa chit, bing cac ky thuat tach ca hpe truyen thing<br /> hoae bang viec k i t hgp cac phuang phap nay vdi nhau (xem<br /> phin tong quan d tren). Thdng thudng gia thanh xa ly nhu<br /> tuang dIu/nudc kha t i n kem n l u sir dung cac phuang phap<br /> xir ly da neu d tren.<br /> Cac thiet bj tach vi sdng van hanh lien tuc, g i n nhu khdng<br /> d n giam sat va chung ed the van hanh ddng thdi vdi nhiiu<br /> ddng thai vdi ham lugng chat ran khac nhau. Thiet bj tach vi<br /> sdng vi vay ed t h i canh tranh cd hieu qua vdi cac thilt bj tach<br /> truyin thing khac de xCr ly nhu tuang d i u trong nudc thai cua<br /> edng nghiep d i u khi.<br /> <br /> 1.2.2. Dac diim va tinh nang chinh cua cdng nghe tach vi<br /> sdng<br /> Cdng nghe taeh vi sdng eung d p mdt cdng nghe xir ly<br /> nhO tuang mdt each nhanh chdng vdi gia thanh ha. Nhung Igi<br /> ich ma edng nghe tach vi sdng dem lai eho ngudi sir dung cdn<br /> Idn han nhiiu so vdi chi phi phai bd ra vi:<br /> - Cai tiin dugc khau van hanh thilt bj;<br /> - Giam gia thanh;<br /> - Sinh Igi nhiiu, rut ngan thdi gian hoan von.<br /> Cdng nghe tach vi sdng khac biet vdi cac phuong phap<br /> tach thdng thudng khac vi chung sii' dung phuong phap vat ly<br /> <br /> <br /> DAU KHi - S6 8/2010 51<br /> A N TOAN - MOI T R U d N G oAU KHI<br /> <br /> <br /> <br /> <br /> de pha vd sy b i n vO'ng cua nhu tuang t i t han so vdi<br /> phuang phap hoa hpe. Cdng nghe taeh vi sdng sir<br /> dung sy rung nhanh eiia trudng dien - dien tu" va mpt<br /> ai lye d l nap nang lugng lya chpn cho eae p h i n tir<br /> phan eye, ma chung ehinh la nguyen nhan tao ra sy Hinh 4. Sa dd bd phan chinh ciia he thiit bi tach vi sdng<br /> b i n vO'ng cho cac b l mat phan each giira eae hat<br /> He t h i n g edng nghe taeh vi sdng sir dung thiet<br /> dIu/nude. O i l u nay se giup be g l y sy be virng ciia<br /> bj taeh vi sdng chuyen dung d l hpi tu vi sdng hoae<br /> nhu tuang dIu/nudc.<br /> nang lugng dai t i n s l radio vao mdt nhu tuang va<br /> Cdng nghe taeh vi sdng cd the van hanh ty ddng<br /> pha vd sy b i n vii'ng cua nhu tuang. Hinh 4 la sa d l<br /> hoan toan vdi quy trinh dan gian nen khdng nhlt thilt<br /> bp phan ehinh ciia thilt bj tach vi sdng. Vi sdng<br /> phai d n sy ed mat thudng xuyen eua nhan vien van<br /> duge tao ra tir mdt thilt bj phat vi sdng thuang mai<br /> hanh, vi t h i se lam giam gia thanh xir ly ciia mdt m3<br /> va duge dua qua mpt dudng truyln/dd sdng ty<br /> nudc thai nhiem d i u . Dae biet thilt bj tach vi sdng ed<br /> ddng de tdi thilt bj tach vi sdng chuyen dung. Thilt<br /> t h i de dang lap dat d nhiing nai k l can vdi nguon<br /> bj truyln/dd sdng ty ddng vi sdng duge thilt k l va<br /> phat sinh nhu tuang nen viee xCr ly nhu tuang se<br /> c h i tao tir loai vat lieu cd dp phan xa eao, khdng<br /> nhanh chdng, de dang va d i i u nay cdn dem lai nhiiu<br /> nhiim tu" va ed t h i cho phep han 99% nang lugng<br /> Igi ich khac nira.<br /> duge truyin tu' may phat (vi sdng) tdi thilt bi tach vi<br /> Vi cac thilt bj taeh vi sdng cd the dat tryc t i i p d sdng vdi nang lugng bj tieu hao hoae quay trd lai<br /> eae phan xudng cua cae nha may Ipe hoa - diu... d l may phat la r i t nhd.<br /> xir ly nhu tuang dIu/nude, d i i u nay se giam thiiu<br /> NhO tuang ben dIu/nudc duge dan vao thilt bj<br /> khii lugng nhu tuang dugc tao thanh them n l u cac<br /> tach vi sdng, nai cd mpt cira so truyin d i n vi sdng<br /> thilt bj xir- ly nhu tuang thdng thudng khac duge dat<br /> cho phep nang lugng vi sdng di qua tu' may phat tdi<br /> d nhO'ng nai tach biet vdi cac phan xudng.<br /> nhu tuang d n xir ly. Nang lugng vi sdng duge hip<br /> 2. Thiet ke, che tao thiet bj thi nghiem pha nhu thu uu tien bdi cac vat lieu phan eye, d i i u nay dugc<br /> tu'O'ng dau/nu'6'c cua nu'O'c thai nhiem dau tinh toan sao cho thilt bi tach vi sdng chi cd hieu qua<br /> 2.1. Cau tao va nguyen ly van hanh cua thiet bj duy nhlt trong viec xu" ly cae nhu tuang cdn nhiet dp<br /> pha nhu twang dau/nw&e bang vi song dien tir t i n g t h i thi duge nang len d mdt chu'ng myc nao dd.<br /> Nang lugng vi sdng se lam thay d i i sire cang b l mat<br /> Mdi he thing tach vi sdng bao gdm: va dp nhdt eua cac pha d i u - nude va lam nhu tuang<br /> - Thilt bj tach vi sdng chuyen dung (da cd bing trd nen kem b i n vO'ng. Nhu tuang kem b i n vO'ng khi<br /> sang ehi); dd se dugc dua tdi bp taeh thdng thudng. Cac cdng<br /> - Ngudn phat vi sdng; nghe taeh thdng thudng dugc sir dung cho viec nay<br /> Trong mdt s l trudng hgp, viec taeh trpng lye binh<br /> - Ong dan sdng va bd dd sdng;<br /> thudng dugc sir dung. Ngoai ra cung ed t h i dung<br /> - Thilt bj do va ty ddng hoa;<br /> cac phuang phap tach bo sung chang han nhu tach<br /> - May bam; ly tam, tuy nhien ddi khi dung phuang phap tach bo<br /> - Bp tach (nlu d n ) ; sung qua manh s§ gay hieu qua x l u d i n phuang<br /> - Quan trae an toan & he thdng ty ddng ket noi. phap tach vi sdng [5].<br /> <br /> <br /> 52 OAU KHI - s o 8'2010<br />  PETROVIETNAM<br /> <br /> <br /> <br /> <br /> Cdng nghe taeh vi sdng dung nang lugng dien tir tach nhu tuang d i u nudc d i n 99 phut.<br /> d t i n s l 915 MHz. Do dae tinh heng v l dien va tir, - Nhiet dp thi nghiem: La kha nang diiu chfnh<br /> edng nghe taeh vi sdng se h i p thu uu tien d i i vdi nhiet dp eua mau thir nghiem ma thilt bj taeh ehung<br /> pha nudc phan eye han la pha d i u khdng phan eye. tdi cd t h i tao ra. Nhiet dp mau nudc thai thir nghiem<br /> Cung eung vdi nhirng ly do d tren ma nang lugng cang cao thi thudng viec tach nhu tuang dIu/nudc<br /> dien tu' nay cung chpn Ipc manh me d l lam gia tang trong m i u cang hieu qua. Tuy nhien trong thyc te,<br /> cudng lye cua cae phan tir phan eye, cac nhdm viee xae djnh nhiet dp thich hgp cua mau nudc thai<br /> chirc va cac chit rIn tieh dien, chung chinh la tae khi tiin hanh taeh vi sdng cdn phu thupc vao tinh<br /> nhan giup eho viec on djnh b l mat phan each eua kinh te cua qua trinh taeh. Cd nghTa la thiet bj tach<br /> nhu tuang dIu/nudc. Sy ehuyen dpng gay ra tir cac chi d n dua nhiet dp m i u nude thai len d mot nhiet<br /> chit hoat ddng b l mat trong trudng dao ddng dien dp vii-a phai de it t i n kem nang lugng tieu thu ma<br /> tu' la nguyen nhan lam thay doi sire cang b l mat va van dam bao hieu qua tach la du. Thilt bj tach ma<br /> lam cho nhu tuang trd nen kem ben viing. Nhu da chung tdi c h i tao ed the diiu khien nhiet dp mau<br /> d l cap d tren, viec gia tang nhiet dp tong t h i eua cae nude thai thir nghiem tu' nhiet dp mdi trudng len d i n<br /> chit thudng d 50°F hoae t h i p han, cdn nhiet dp ben 100°C.<br /> ngoai duge giir d dudi 200°F. Thilt bj duge van<br /> hanh d ap suit t h i p 20 - 50psig. O l tang cudng tinh - Cdng suit ciia thilt bj: La edng suit eua may<br /> hieu qua va mire dp linh hoat cua cae thilt bj tach vi phat nang lugng vi sdng va la mpt thdng s l quan<br /> sdng, eae thilt bj nay khi hoat ddng d hien trudng cd trpng anh hudng d i n hieu suit tach d i u eiia thilt<br /> t h i k i t hgp sir dung vdi cae phuang tien djch vu bi. Do viec c h i tao thiet bj nhIm muc dich thi<br /> chung nhu dien, nudc lanh, ddng hai nhiet, khi nita, nghiem nen thilt bi cua chung tdi cd 3 mire cdng<br /> khdng khi nen... d cae nha may Ipc hoa d i u hoae s u i t cd t h i van hanh khi thir nghiem la 0,5 KW, 1,0<br /> cac ca sd san xult, nai ma he thing taeh vi sdng KW va 1,5 KW.<br /> dugc l i p dat va van hanh. 3. ThCc nghiem tach nhu tu'ang dau/nu'6'c bang vi<br /> song dien tif va Phu'O'ng phap tuyen noi ket hgp<br /> Cac thilt bj tach vi sdng cdn dugc trang bj mpt<br /> chat pha nhu<br /> he thing kilm tra toan dien va he thing taeh vi sdng<br /> ed t h i dugc giam sat tir xa bdi nhan vien van hanh 3.1. Thir nghiem<br /> thilt bj. 3.1.1. Khao sat hieu suit tach diu cua thiit bi tach vi<br /> 2.2. Xae djnh eae thong so van hanh eua eong sdng<br /> nghe - Hieu suit tach d i u : P% = lugng d i u {mg/l da<br /> Sau khi thilt bj tach vi sdng da dugc c h i tao tach) X 100% lugng (mg/l ban diu).<br /> hoan chinh v l mat ea khi, dien va dien tu' thi v i n d l Cae mau nhu tuang d i u trong nude dua vao<br /> cdn lai la xac djnh cae thdng s l van hanh ciia thilt bj thilt bj tach vi sdng d l thir nghiem kha nang taeh<br /> ma ta ed the d i i u khiin trong qua trinh thu' nghiem eiia thilt bi. Sau dd tiin hanh xac djnh ham lugng<br /> tach cae m i u nude thai cd chira nhu tuang d i u - d i u cdn lai bing phuang phap phan tich quang pho<br /> nudc sau nay. tir ngoai.<br /> Theo tai lieu tham khao va dya vao nguyen ly van Cd 4 thdng s l ehinh sau day se dugc dua vao<br /> hanh ciia edng nghe tach vi sdng thi 3 thdng s l ky thi nghiem de khao sat kha nang tach d i u cua thiet<br /> thuat sau day ciia thilt bi la ed anh hudng nhiiu nhlt bj taeh vi sdng:<br /> doi vdi qua trinh taeh nhO tuang d i u nude cua thilt - Thdi gian tach (giay);<br /> bj ma Chung ta d n quan tam. Cac thdng s l dd la:<br /> - Nhiet dp (OC);<br /> - Thdi gian tach: Day la y l u to anh hudng manh - Cdng suit ciia thilt bj tach vi sdng (KW);<br /> tdi hieu suit tach d i u ciia thilt bj. Thilt bj taeh vi<br /> -pH.<br /> sdng ma ehung tdi e h i tao ed t h i thyc hien qua trinh<br /> <br /> DAU KHt - 3 6 8/2010 53<br />  Hl^u suit tich d i u theo thM gian<br /> <br /> <br /> <br /> <br /> 60 70<br /> Th6f gian (s|<br /> o l khao sat cae thdng sd thi nghiem nham xae<br /> djnh c h i dp lam viec toi uu, ehung tdi c l djnh ham Do thj 1. Hieu suit tach diu ciia thiet bi tach vi sdng<br /> lugng d i u trong nude thai d n i n g dp 150mg/l. Day la va thai gian tach<br /> ning dp ma he nhu thudng b i n nhat d NTND cua cac<br /> nha may Ipe hda d i u [4] va viee khao sat sy phu thupc * Khao sat hieu suit tach diu phu thude vao cdng<br /> giua hieu suit tach d i u eua thilt bj tach vi sdng vdi suit cua thiit bi<br /> ndng dp dau trong nude thai se dugc thyc hien rieng Hieu suit tach d i u phu thude vao edng suit cua<br /> biet va se dugc trinh bay d phin t i i p theo. Ngoai ra thilt bj tach vi sdng duge trinh bay d O l thj 2.<br /> the tich mau nude thai (gia dinh) d l thi nghiem c l djnh<br /> H l ^ u s u A t t A c h dAu t t i « o c A n g suAt<br /> d the tieh 200ml.<br /> o l khao sat sy lien he giO'a hieu suit taeh ciia<br /> thilt bj taeh vi sdng vdi 4 thdng s l neu tren chung tdi<br /> se c l djnh 3 thdng sd va thay d i i mdt thdng sd d n<br /> khao sat eu t h i .<br /> - Khao sat sy lien he eiia thdi gian tach vdi hieu<br /> suit tach, ehung tdi e l djnh: pH = 7, nhiet dp = 550C,<br /> cdng suit taeh = 1,5 KW cdn thdi gian taeh dugc thay<br /> C«na * ^ t (KWn<br /> doi tir 30 - 75 giay.<br /> - D l khao sat sy lien he giO'a cdng suit taeh eua Do thj 2. Hieu suit tach diu phu thude vao cdng suat<br /> ciia thiit bi tach vi sdng<br /> thiet bj vdi hieu suat taeh chung tdi phai cd djnh: pH -<br /> 7, nhiet dp = 550C, thdi gian 40 giay, cdn cdng suit<br /> taeh dugc thay doi tu' 0,5 - 1,5 KW. * Khao sat hieu suit tach diu phu thude nhiet do<br /> - Sy lien he giiia hieu qua taeh vdi nhiet dp thi Hieu s u i t tach d i u phu thupc vao nhiet dp ciia<br /> ehung tdi c l djnh cdng suit eiia thilt bj taeh la b i n g thilt bj tach vi sdng dugc trinh bay d D l thj 3.<br /> 1,5 KW, thdi gian la 40 giay, pH = 7, cdn nhiet dp eua<br /> H i « U s u At tdc h d^u t h e o n t i l ^ dO<br /> nude thai chira d i u duge thay doi tir 35 - 80^0. 1 ;<br /> £<br /> •<br /> <br /> cua thiit bi tach vi sdng v&i ham Iwgng diu (dang nhO 94 2<br /> twang diu/nw&c) trong nw&c thai S 92<br /> <br /> Nghien ciru cac dac trung cua NTND thi nong dp 90<br /> 0 100 120 200 280 300 400 500<br /> d i u trong nude thai la mdt thdng s l quan trpng de NAng(50dlu/ra.rt'c(mg/l)<br /> nghien cu'u, danh gia hieu qua tach va thu hoi d i u cua<br /> bit ky loai thilt bj nao du la ea hpe, hda hpe hay vat Do thj 5. Hieu suit tach diu ciia thiit bi tach vi sdng<br /> ly... Vi vay d l nghien cu'u va danh gia hieu qua taeh phu thuoc vao ham luang diu<br /> <br /> <br /> <br /> DAU KHi - S6 8/2010 55<br /> A N TOAN - MOI T R U d N G DAU KHI<br /> <br /> <br /> <br /> <br /> Nhan xet kit qua thi nghiem: - Cac NTND n l u duge xij ly p h i n can va cac tap<br /> Hieu suit taeh d i u cua thilt bj taeh vi sdng dat chit ea hpe khac mpt each triet de thi sau khi xu ly<br /> hieu s u i t taeh rit t i t d i i vdi nude thai cd ham lugng ham lugng d i u b i n g ky thuat vi sdng, ta ed the tai<br /> d i u tu' 20 - 470mg/l. Hieu suit tach t h i p nhlt la sir dung nudc thai qua xir ly nay vao muc dieh khac<br /> 94% va hieu suit cao nhlt dat tdi 98,5% (day la k i t nhu nude tuIn hoan hay nudc lam mat ...va dac<br /> qua thanh cdng ngoai mong dgi). Tir k i t qua khao biet nhii'ng nai cd nguln nudc thai Idn thi lugng<br /> sat m l i tuang quan giO'a hieu suit tach d i u ciia d i u thu h i i dugc tir ky thuat tach vi sdng la dang ke,<br /> thiet bj tach vi sdng vdi ning dp d i u (dudi dang nhu gdp phin vao viec tang Igi nhuan eiia ea sd cd<br /> tuang hda) ed t h i khing djnh: nguln nudc thai.<br /> <br /> - Sir dung thilt bi tach vi sdng k i t hgp vdi - Nhirng k i t qua thu dugc va trinh bay d day<br /> phuang phap tach phu trg khac ma cu t h i d day d i u duge thi nghiem eho eae mau nudc thai thir<br /> chung tdi sir dung phuang phap ly tam, ta cd t h i nghiem dan thuin 2 pha nudc va d i u . Trong thyc<br /> hoan toan xa ly nudc thai chira d i u vdi ning dp dau t l , cac m i u nudc thai cdn chira cae chit rIn, can la<br /> trong nudc thai ban d i u dat tdi 500mg/l dat tieu Iirng va nhieu tap c h i t khac. NhO'ng tap chit nay ed<br /> chuin thai cho NTND d vung bien xa bd. Do han t h i tac ddng va lam giam p h i n nao hieu qua taeh<br /> che v l thdi gian va kinh phi nen thi nghiem nay ehi cua thilt bj tach vi sdng. Tuy nhien, sy anh hudng<br /> dung d ning dp d i u trong nude thai t i i da 470mg/l cua cac tap chit neu tren se khdng lam anh hudng<br /> va ning dp d i u tuang irng trong m i u nudc thai sau Idn d i n hieu qua, k i t qua khao sat da thu duge. Vi<br /> khi xa ly chi cdn 23,47mg/l, each kha xa tieu chuan vay nhO'ng nhan xet neu tren la khdng thay d i i .<br /> thai cho phep 40mg/l, cd nghTa vdi m i u nudc thai<br /> 3.2. Khao sat hieu qua taeh dau (dang nhu twang<br /> chira ham lugng dau Idn han 470mg/l van ed t h i<br /> hoa) eiia phwang phap tuyen noi<br /> duge xir ly bing ky thuat tach vi sdng de dat dugc<br /> tieu chuin d i u trong nudc thai thap han quy djnh Oe nhirng s l lieu thyc nghiem cho phep so sanh<br /> cho phep. va danh gia hieu qua tach d i u ciia phuang phap<br /> tach vi sdng vdi cac phuang phap taeh khac, chung<br /> Qua do thj dugc xay dyng tir k i t qua khao sat<br /> tdi da thyc hien viec tach cac m i u nhu tuang diu<br /> v l m l i tuang quan giO'a hieu suit taeh d i u cua thilt<br /> nudc theo phuang phap tuyen noi.<br /> bj taeh vi sdng va ning dp d i u trong nudc thai, cd<br /> the ngoai suy va dy doan cho ngudng nong dp d i u Tuyln noi la phuang phap kha pho biln dugc<br /> eye dai eho phep cd t h i chira trong nudc thai d l xir dung d l tach d i u ra khdi nudc thai, thdng thudng<br /> ly b i n g phuang phap taeh vi sdng dat ning dp thai phuang phap tuyln noi muon dat hieu qua tach cao<br /> cho phep khoang 500mg/l. cOng d n cd nhO'ng tac nhan khac ho trg. Vi t h i de<br /> thyc hien viec taeh d i u trong eae m i u nudc thai thir<br /> - Rieng d i i vdi nudc thai ed chira ham lugng<br /> nghiem, chung tdi ehpn phuang phap tuyen noi<br /> d i u 280mg/l thi sir dung phuang phap tach vi<br /> bing khdng khi hda tan (DAF) vdi tae nhan phu trg<br /> sdng cd t h i cho ta k i t qua r i t I n tugng la hoan<br /> la c h i t pha nhO duge them vao m i u thu' vdi cac<br /> toan dap irng tieu c h u i n thai ra mdi trudng d trong<br /> n i n g dp khac nhau. V l mat ly thuylt phuang phap<br /> d i t l i l n . O i l u nay cung ed nghTa nong dp d i u trong<br /> tuyln noi nay cho phep tach cac gipt d i u nhd tdi<br /> nude thai sau khi xa ly bang ky thuat tach vi sdng<br /> 1pm. Cae mau nudc thai thir nghiem d phuang<br /> chi eon 5mg/l.<br /> phap tuyln n l i eung duge chuan bj gilng nhu cae<br /> o l i vdi nhu-ng mau nudc thai cd chira ham m i u nude thai thir nghiem cho phuang phap tach vi<br /> lugng d i u >280 mg/l thi cd t h i d n phai thyc hien sdng. Cung tuang ty nhu cac thir nghiem da thyc<br /> viec xa ly bae 2 cOng b i n g chinh phuang phap tach hien d p h i n khao sat hieu qua tach d i u ciia phuang<br /> vi sdng nay hoae b i n g mpt phuang phap tach khac phap vi sdng, d p h i n khao sat hieu qua tach d i u<br /> de dat tieu chuan thai ra mdi trudng theo quy djnh bing phuang phap tuyln noi, chung tdi t i i n hanh<br /> ciia phap luat hien hanh. khao sat d l lya chpn cac d i i u kien van hanh t i i uu<br /> <br /> 56 DAU K H I ^ 3 0 8/2010<br />  PETROVIETNAM<br /> <br /> <br /> <br /> <br /> ciia phuang phap tuyln noi nay, cu t h i la cae thdng - Cd the thiy kha rd rang phuang phap tuyen noi<br /> s l : pH cua mau thir, khao sat lugng chit pha nhu va (DAF) ed them chit pha nhu la phuang phap taeh va<br /> thdi gian tach m i u d n thilt. thu hoi d i u trong nudc thai d dang nhu tuang tuyet<br /> * Kit qua khao sat, lwa chon cae thdng so thi vdi trong vung ning dp d i u trong nude thai tu 20mg/l<br /> nghiem toi wu d i n 470mg/l.<br /> <br /> K i t qua khao sat hieu suit taeh d i u ciia phuang - Nhirng gi da dugc nhan xet cho thi nghiem<br /> phap tuyln n l i lien quan tdi pH, lien quan tdi thdi gian tuang ty doi vdi phuang phap taeh vi sdng thi eung<br /> tach, lien quan tdi ham lugng c h i t pha nhu chpn eae hoan toan cd t h i van dung de nhan xet eho hieu qua<br /> thdng s l t i i uu sau: taeh d i u ciia phuang phap tach nhu tuang d i u<br /> trong nudc thai theo phuang phap tuyen noi (OAF)<br /> - pH = 7;<br /> cd them hda c h i t pha nhu. Ca 2 phuang phap tach<br /> - Thdi gian tach = 50 phut; d i u tir nudc thai nay cd t h i vu-a dap irng y l u t l yeu<br /> - Ning dp chit pha nhO = 20mg/l; cau xir ly d l dap irng tieu ehuan thai ra mdi trudng<br /> Vdi pH = 6,5 cho hieu suit tach d i u cao nhlt ma cdn dap irng kha nang thu h i i d i u tu' nudc thai<br /> nhung chpn pH = 7. nhiem d i u phuc vu tieu ehi phat trien b i n vii'ng trong<br /> san xult.<br /> Sau khi da khao sat va lya ehpn eae thdng s l thi<br /> nghiem tdi uu cho cae d i i u kien van hanh eua Tu" k i t qua tren ed t h i nhan xet nhu sau:<br /> phuang phap t u y l n noi la pH, thdi gian tach va ndng - Hieu suit taeh d i u ciia ea 2 phuang phap vi<br /> dp ciia chit pha nhu, ta t i i n hanh thi nghiem d l khao sdng va tuyln n i l d i u rat tuyet vdi cho vung ndng dp<br /> sat sy tuang quan giira hieu s u i t taeh d i u eiia d i u trong nudc thai tir 20mg/l d i n dudi 500 mg/l.<br /> phuang phap t u y l n noi vdi n i n g dp d i u trong m i u<br /> - Chi ed sy khac biet r i t nhd v l hieu suit tach ciia<br /> nude thai thir nghiem.<br /> 2 phuang phap taeh d i u nay d vung ning dp ban d i u<br /> Thi nghiem dugc thyc hien bang each giii' e l djnh va vung ning dp culi. Vung ning dp d i u 20 - 40 mg/l<br /> cac thdng s l pH = 7, thdi gian tach = 50 phut va ham thi hieu suit taeh eua phuang phap tuyln noi cao han<br /> lugng chit pha nhu = 20mg/l. Cdn ham lugng d i u cua mpt chut so vdi phuang phap vi sdng. Cdn d vung<br /> miu nude thai dugc thay d i i tii' 20 - 470 mg/l va mdi ning dp cuoi 420 - 470 mg/l thi hieu suit tach cua<br /> lin each biet tu' m i u nay d i n m i u k l can la 10 mg/l. phuang phap vi sdng trpi han so phuang phap tuyln<br /> Thir nghiem dugc tiin hanh khao sat d l xae djnh hieu n i l . Oilu nay eung trung hgp vdi cac nghien cuu khac<br /> qua taeh d i u cua phuang phap tuyln noi vdi ning dp v l phuang phap tuyln n l i la cho hieu suit tach khdng<br /> d i u trong m i u nude thai. K i t qua khao sat so sanh duge t i t khi ning dp dIu/nude > 500mg/l.<br /> vdi phuang phap vi sdng dien t h i hien d O l thj 6.<br /> - Cd t h i xem hieu suit tach d i u eua phuang phap<br /> S o sAnh hl^u suAt tAch dAu ttieo h A m luMpno d^u/ninirc tach vi sdng tuang ty vdi phuang phap tuyln noi<br /> giOa p h i v o ^ g p h A p vi s O n g vA phu>o.ng p h A p tuyAn n 6 l<br /> truyin thong. Viec so sanh hai phuang phap nay se<br /> cdn duge d l cap d i n cae khia canh: Gia thanh xa ly,<br /> mire dp phirc tap khi van hanh thilt bj eOng nhu sy<br /> yeu d u bao dudng thilt bj...(se dugc d l cap d bai<br /> bao khac).<br /> <br /> Ket luan<br /> <br /> Qua k i t qua thir nghiem cdng nghe vi sdng de<br /> 4O0 500 tach nhu tuang dlu/nudc trong nude thai nhiim d i u<br /> Htm lu^ng cliu/niJ.«.c (nig/l><br /> tren thilt bi taeh vi sdng ty e h i tao. Chung tdi cd the<br /> Do thj 6. Hieu qua tach dau (dang nhu tuang) cua phuang khang djnh ring thilt bj tach vi sdng cd kha nang tach<br /> phap tach vi sdng va phuang phap tuyin noi (DAF) va thu h i i d i u dudi dang nhu tuang dlu/nudc vdi<br /> <br /> DAU KHi - 36 8/201 n 57<br /> hieu qua cao, dap irng d l y du cac tieu chuin mdi Tai lieu tham khao<br /> trudng ciia Viet Nam va khdng thua kem b i t ky<br /> 1. Le Thj Phugng va nnk. Xir ly nw&e thai bSngi<br /> phuang phap tach va thu h i i d i u b i n g cac cdng nghe<br /> phwang phap vi sdng dien tir de thu hoi diu a thi nhu\<br /> truyin thing khac.<br /> twang trong nw&c thai nhiim diu. Bao cao tong kit d |<br /> Ngoai ra, cac cdng nghe taeh vi sdng la edng tai nghien cu'u khoa hpe d p nganh 2008.<br /> nghe tach vat ly nen bao toan dagc d i u d nhiim d l<br /> 2. Steve King. Small Quantity Generator Dili<br /> tai sir dung. Cdng nghe tach vi sdng khong san sinh<br /> Wasterwater Management Study. Final Reporl<br /> bat ky cac san p h i m phu nao khac cd t h i gay d<br /> 11/1999.<br /> nhiim thir d p nhu phuang phap tuyen noi DAF do<br /> ed them phu gia pha nhu hay cac phuang phap xir ly 3. George R. Ahher. Put the Breaks on waste<br /> nhu tuang d l u / n u d c b i n g cdng nghe hda hpe. Ngoai water Emulsion. Biomin - Ine, 8/2008.<br /> ra do thilt bj vi sdng gpn nhe, b i n ehic va van hanh 4. John N. Veenstra. Ph. D. P. E. Refinery waste<br /> dan gian nen khdng ddi hdi mat b i n g rdng, d n it water Management Using Multiple. Angle Oil Wa^<br /> nhan cdng van hanh, chi phi bao dudng thilt bj Seperator. As paper presented at the Internation<br /> t h i p . . . la nhirng uu viet v l kinh t l eua edng nghe nay Petroleum Environment Conference New Mexic<br /> dem lai ma cac cdng nghe taeh truyin t h i n g khac 10/1998.<br /> khdng cd. Chung tdi mong mudn va tin tudng r i n g 5. Kenneth R. Abison; David S. Me Caffeyjj<br /> trong tuang lai g i n Viet Nam se sir dung rdng rai Microwave Separation Technology (MST). Effective<br /> edng nghe taeh vi sdng trong viec xir ly va thu hoi d i u Seperation Emulsions to Reduce Associate<br /> d nhiem trong nudc thai nhiim d i u gdp phin bao ve Environmental Impacts and Increase Processin<br /> hieu qua mdi trudng. Capabilities. 9/2000. •<br /> <br /> <br /> 58 DAU KHi - 3 6 8/2010<br />