Khoa hoc S. cong nghe<br />
<br />
—'<br />
Kir III rac thai dang ohirdng Dhao dot-Quan diem<br />
cua Nhat Ban lam giam hdt sd ndng len cua trai dat<br />
Rdc thai, a mdi ntrdc tren THS. TRAN PHUaC CUONG<br />
the giai co cdch thCrc xCr ly<br />
rieng, nhung chung quy Iqi 100<br />
d i u quo 3 phuong phdp: ly<br />
hpc (nghi§n, tdeh nuqc, ep, 80<br />
78<br />
tdeh bdng gid, tdeh bdng tCr<br />
tinh, tdeh bdng toy, sdng •il 60<br />
50<br />
bdng luqi), hda hoc (dot, khi<br />
,> 40 32 ?3 33 34<br />
hdo bdng phdn huy nhiet, ??<br />
29<br />
hdo ton, xCr ly tdeh clo, trung 20 12<br />
17 14<br />
hoa) vd sinh hoc (Idm phdn<br />
vi sinh, tqo khi Me tan, len<br />
men bdng vl sinh vdt). Tuy *.v.^'' v^*^ v^->*..r ^ - ^ . . ^ ^-^ , # •<br />
•e-"<br />
nhien, tuy theo d i l u kien ty<br />
nhien, mdi tru'dng sinh thdi, -f .Say ) — • - ( "^ac'' V - > r T t i a f i h hinh J<br />
phip ddt ed lpi han vd mat giam<br />
lupng phit thai gay hieu ttng nha<br />
kinh, giam Iam ndng trii dit.<br />
Them ntta, Nhat Ban edn thu<br />
Iai nhuan ttt phuang phip dd't qua<br />
viec thu hdi nflng lugng nhd phat Nhiet lu-gng: 6000 "" SOOOkcal<br />
dien ttt rac (hinh 3). Ttt eae Id ddt<br />
Hinh 4. Nhien lieu hoa rdc thai<br />
ric chi can lap dflt them he thd'ng<br />
tuabin dd tan dung nhiet vfl hai Ngoai phuang phip ddt, d Hien nay, ca the gidi dang tap<br />
nudc phat ra ttt Id ddt, tuabin se Nhat cdn ttng dung cdng nghe tnmg hdt stte dd giai quydt tinh<br />
phat sinh ra dien su dung va thu nhien lieu hda rac thii, ttte li ric trang bien ddi khf hflu, mdt vin dd<br />
hdi nhiet cung cfl'p cho eie miy thii sau phan loai se dugc nghidn, dang ndng bdng toan eau, de doa<br />
mde can thidt. Nhu vay, nflng siy, tach vfl ep thanh tttng banh, cudc sd'ng cua nhan loai. Tdi cho<br />
luang tu dd't rac se thay the mot tttng cue nhien lieu. San pham niy ring ndu quan diem cua eie nudc<br />
phan nflng lupng stt dung tnrdc thudng dugc gpi tit la RDF vd xu ly eung nhu quin ly ric thai<br />
day, gdp phan lam giam tii cho (Refuse Derived Fuel), ttte l i dugc ap dung nhu d Nhat Ban, thi<br />
cac nha miy nhiet dien, dan den nhien lieu san xua't ttt ric vfl sinh se gdp phin khdng nhd trong viec<br />
giim sir dung nhien lieu hda thach ra nhiet lugng cung khi eao. giam nhttng tic ddng do bidn doi<br />
va se giam sir ndng Ien eua trai Vd cac bfli chdn lap ric, hien khi hau qua viec cflt giim cac chat<br />
diit. D P dd, d Nhat Ban, ca sd ddt nay Nhat dang su dung rit nhidu gay hieu ttng nha kinh. •<br />
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<br />
36 Khoj hoc<br />
&phat trien<br />