Xử lý nước bằng vật liệu Nano

Thuc tieh - Kinh nghiem<br /> <br /> <br /> <br /> Xuf ly nirdc bang vat lieu Nano<br /> • v / cd nudc ddng trong<br /> ^ r msinh hogt phue vu cugc<br /> M.-^ sdng hdng ngdy, ngudi<br /> ddn xd Cao Duang, huyen Thanh<br /> Oai - Hd Ndi ngodi viec su dung<br /> nu&c mua, vdn phdi diing nguon<br /> nu&c td gieng khoan. Nhung dd<br /> nhieu ndm nay nguon nu&c gieng<br /> khoan nai ddy dd bi d nhiem, ddc<br /> Met la nong do asen dd a mdc<br /> ddng bdo ddng.<br /> <br /> <br /> Sdng chung vdi d nhiem<br /> Vao nhung nam 2000, ne'u<br /> khdng cd doan khao sat ciia d c ca<br /> quan chQc nang vl kilm tra tinh<br /> trang d nhiim ngudn nudc trdn dia<br /> Xie Iy nifdc thdi nano epc.<br /> ban thi ngudi dan noi day khdng<br /> bidi ring minh vln dang sQ dung<br /> ngudn nudc d nhiim dl sinh boat. trgng, trong dd nhidm sit, man nudc. Anh Nguyin Dinh Van d<br /> Nhiing huyen cd ngudn nudc ngim gan... dac bidt, la nhiim asen. thdn Mgc Xa, xa Cao Ducmg cho<br /> nhiim asen nang nhit la Qng Hda, Khao sat vl tinh trang d nhidm bid't, nam 1999, gia dinh cd khoan<br /> Qudc Oai, Thanh Oai... Trong dd, ngudn nudc ngim tai dia phuong mgt cli gid'ng vdi muc dfch lay<br /> cd xa Cao Duong cua huyen Thanh vio nam 2003 cua d c co quan nudc dl phue vu cugc sdng sinh<br /> Oai la dia phuong bi nhiim asen chQc nang cho tha'y, cd tdi 91,3% boat hang ngay. Mudn cd ngudn<br /> nang nhat. d c mlu nudc dugc Iiy trong d c nudc sach anh da cho khoan sau tdi<br /> gidng khoan d day bi nhiim asen 60m. Khi mdi dd ra chau, nudc<br /> Ong Chu van Chung, Phd Chu<br /> vdi ndng do xorgt qua mQc cho phep trong vit, mat lanh, ai nay diu<br /> tieh UBND xa cho bid't: Toan xa<br /> tQ 0,05- 0,08%. Mac du, d c gieng mQng vi da cd nudc sach dl dung.<br /> hien cd 2.256 hg dan vdi gin<br /> d day dugc khoan vdi do sau tQ 50- Nhung nilm vui ngin ching tay<br /> 10.000 nhan khau. Vi each xa<br /> 70 m ma ngudn nudc cung khdng gang, chi sau khoang 15 phut, nudc<br /> trung tam thanh phd ndn ngudi dan<br /> dam bao, sQc khde cua ngudi dan trong chau tQ trong vit chuyin<br /> trong xa thudng sQ dung nudc<br /> trong xa dang bi de dga... sang cd mlu nhu nudc vo gao, trdn<br /> gidng khoan dl dung trong sinh<br /> bl mat cd vang, mui rit tanh khdng<br /> boat, cdn nudc dl ud'ng thi mdi nhl Ngudn nudc ngim bi d nhiim<br /> sao sQ dung dugc. Dugc mgi ngudi<br /> diu cd mdt bl nudc mua. Tuy da anh hudng nghidm trgng tdi<br /> hudng din, anh da Iam mgt bl Igc<br /> nhidn, lugng nudc nay ra't ban chd' cugc sd'ng cua ngudi dan dia<br /> phuong, nhilu ngudi khdng ydn gdm cat, sdi nhung chat lugng<br /> vi phu thudc nhilu vao thdi tidi.<br /> tam sQc khde cua minh khi hang nudc vln khdng dugc cli thidn la<br /> Ben canh dd, ngudn nudc ngam<br /> ngay hg vln phii sQ dung ngudn bao. Dac bidt, nudc da duac loc<br /> ngay cang bi d nhiim nghidm<br /> <br /> Tdi nguyen yd Mdi trudng | Ky 2-Thang 3/2011 3Q<br /> nhung khi sQ dung trong smh boat 200 chau hoan toan phu thudc vao dung trong cdng nghidp Igc nude<br /> nhu tim, giat da xuat hidn ngQa, da nudc trdi. CQ h i khi trdi cd mua, cd kfeh thudc vai micron, thi kfeh<br /> min dd. Ban than anh Van nhilu cd trd nha trudng Iai thay nhau thudc hat cua cacbon nano nhd hem<br /> lln rQa mat bing ngudn nudc nay hQng, dung vao mdt bl chQa hang nghin lln hat than boat tfnh.<br /> da tha'y thi luc minh bi giam rd ret. khoang 8m3 nude. Nhung vdi didn Do vay, kha nang Igc nudc cua cac<br /> Kit luan cua cle co quan chQc tfch be nhu vay nudc chi du dung vat lieu nano that tuyet vdi. MQc do<br /> nang sau khi lay mlu cho thiy, cho khoang 7 thing, 5 thang cdn lge cua cac may nay rit tinh, Igc<br /> ngudn nudc ma gia dinh anh sQ lai d c cd phai vao nhl dan quanh dugc cac hat ban nhd vii nano, kha<br /> dung da bi nhiim asen la 0,25 %, vung xin nude vl nlu an cho cac nang khQ khuin rit manh. Hon thd'<br /> vugt qua tieu chuln cho phep cua chiu. Xin nudc la mdt chuydn, cdn nQa, du Igc nudc rit sach va cd thi<br /> Bd Y te. vide quan tam hem cua giio vidn d ud'ng ngay nhung nd vln giu<br /> day la tQ chd ngudn nudc ngam nguyen nhiing chat khoang va cac<br /> Dua cdng nghe nano vao xir<br /> khdng dam bao vd sinh ndn nhilu nguydn td vi lugmg d n thidt cho cd<br /> ly nudc nhiem asen<br /> phu huynh hgc sinh khdng yen tam thi. Day la mdt trong nhQng uu viet<br /> Mdi day, dugc su hd trg cua vl sQc khde cua con em minh. Cai do ban chit cua vat lieu nano mdi<br /> Vidn Nudc, Tudi tidu va Mdi dugc ldn nhat 11 tQ day sQc khde cd ma d c chit lieu Igc khic khdng<br /> trudng (thudc Vidn Khoa hgc cua cd, trd cua nha trudng dugc cd dugc.<br /> Thuy lgi Viet Nam - Bd dam bao, phu huynh hgc sinh cd<br /> NN&PTNT) da triln khai thf thi ydn tam vdi ngudn nudc sach Hidn nay d nude ta chua cd<br /> dilm md hinh xQ ly nude nhiim m l nha trudng dung dl nlu an cho mdt don vi nio san xuat dugc<br /> asen bing thidi bi sQ dung vat d c chau. Mong mud'n cua nha ldi Igc lam bing vat lieu nano,<br /> lieu nano tai trudng mim non xa trudng la tdi day trudng md them ma phai nhap tQ nudc ngoai, gia<br /> Cao Duong, dilm trudng mim ldp (khoang 100 chau) thi nhu d u thanh lai dit. Trong khi dd Idi Igc<br /> non Thi Van vdi cdng suit tQ sQ dung nudc se tang ldn, do nha nano 11 phln quan trgng nhit de<br /> 350-400 1ft nudc/gid va thid't bi trudng mong mudn cd them mdt Igc cae chit sit, vi khuan, dac biet<br /> lip tai hd gia dinh anh Nguyin may Igc nua dl cd trd nha trudng la asen - chit gay anh hudng<br /> Dinh van cd edng suit 80 1ft ydn tam ban trong vide day va nghiem trgng tdi sQc khde con<br /> nudc/ gid. hgc... Hay hd gia dinh nha anh ngudi, gay ra d c benh nhu sQng<br /> van cung vay, tQ khi dugc hd trg hda ban chan, tay, d c khdi u hay<br /> Kdi qua that bit ngd, ngudn gay benh ung thu....<br /> mdt thidi bi lge nano vdi cdng<br /> nudc sau khi dugc xu ly bing vat<br /> suit 80 Ift/gid, sQc khde mgi thanh Theo Cue Quan ly Tai nguyen<br /> lieu nano ndng do asen da giam<br /> vidn trong gia dinh duge cai thien nudc (Bd TN&MT), trdn ca nudc da<br /> dang kl, da dat tieu chuln cho<br /> rd ret. cd 1.380 xa cua 40 tinh, thanh phd<br /> phep cua Bd Y te. Cu thi: Phan<br /> tfch nude chua qua xu ly ham cd nguy co d nhiim asen trong<br /> SQ dung vat lieu nano trong xQ<br /> lugng asen la 0,148%, sau khi xQ ngudn nudc ngam, trong dd phd<br /> Iy ngudn nudc nhiim asen d nude<br /> ly nudc ham lugng asen chi cdn bid'n tai nhilu tinh cua vung ddng<br /> ta la diiu rit mdi me. Ong Trin<br /> 0,002%, kilm tra lln 2 sau khi lge bing sdng Hdng, ddng bang sdng<br /> Hung, d n bd thudc Vidn Nudc,<br /> la 0,008% va kilm tra lln 3 thi Cim Long, va ddng bing ven biin<br /> Tudi tieu va Mdi trudng - ngudi<br /> ham lugmg asen chi cdn 0,01% cac tinh Duyen hai miln Trung.<br /> true tie'p triln khai du an xQ ly nudc<br /> (tidu chuan cho phep cua Bg Y td' Vide phit triln, san xult thidi bi lge<br /> bang edng nghe nano d xa Cao<br /> la 0,01%). ChQng kid'n su "thin nudc sQ dung vat lieu nano d n cd<br /> Duong cho ring, hieu qua lge nudc<br /> ky" cua thidi bi Igc nudc bing vat su chung tay, gdp sQc cua d c ban,<br /> cua thiet bi nay II khdng thi phu<br /> lieu nano, ba Nguyin Thi Lan, Phd nganh, dac bidt la cac doanh nghidp<br /> nhan. Cud'i the' ky 20, cdng nghd<br /> Hidu trudng Trudng Mim non xa dl ngudi dan nhirng vung cd ngudn<br /> nano phat triln manh me, giup tao<br /> Cao Duong khdng giau dugc su vui nudc bi nhiim asen cd thi ydn tam<br /> ra d c vat lieu cd d c hat hay mang<br /> mQng cho biei, tQ trudc tdi nay ban vl sQc khde eua minh khi da cd<br /> cd kfeh thudc vai nano (mgt nano<br /> ngudn nudc ma nha trudng su du nudc sach dl dung.<br /> bing mdt phln ty met). Nd'u nbu<br /> dung dl nlu an hang ngly cho gin than boat tfnh (mdt dang cacbon) LE HAI<br /> <br /> 40 Tdi nguyen vd Mdi trudng I Ky 2 - Thang 3/2011<br />