Hauv cov txheej txheem ntawm kev kho cov dej khib nyiab, nws yuav tsum tau mus dhau ntau cov kauj ruam ua haujlwm, thiab tom qab raug sim kom ua tau raws li tus qauv tso tawm, nws raug tso tawm. Hauv cov txheej txheem no, cov flocculant ua lub luag haujlwm tseem ceeb. LubCov khoom ua kom cov dej khovtuaj yeem ua rau cov khoom me me uas raug tshem tawm hauv dej sib xyaw ua ke. Kev sib haum xeeb, ua rau nws yooj yim rau lim. Cov hom flocculants kuj muaj ntau heev. Yuav ua li cas xaiv cov flocculant uas haum rau koj kuj tseem ceeb thiab tseem ceeb. Hais txog kev xaiv cov flocculants, PAM thiab PAC cov chaw tsim khoom muaj cov lus qhia hauv qab no:
Yuav xaiv cov tshuaj flocculant li cas hauv kev kho dej khib nyiab yuav tsum tau xaiv raws li cov yam ntxwv ntawm cov dej khib nyiab hauv ib qho kev lag luam tshwj xeeb. Tib lub sijhawm, nws kuj nyob ntawm qhov twg ntxiv cov tshuaj flocculant thiab nws siv rau dab tsi. Feem ntau, thaum xaiv cov tshuaj flocculant inorganic, yuav tsum xav txog cov khoom sib xyaw ntawm cov dej khib nyiab, thiab tom qab ntawd xaiv ib qho tsim nyog (ntsev hlau, ntsev txhuas lossis ntsev hlau-txhuas, ntsev silicon-txhuas, ntsev silicon-ferric, thiab lwm yam); cov tshuaj flocculants inorganic polymer suav nrog:polyaluminum chloride (PAC), polyaluminum sulfate (PAS), polyaluminum sulfochloride (PACS) thiabpolyferric sulfate (PFS), thiab lwm yam. Ntawm lawv, cov PAC thiab PAS uas sawv cev ntau dua muaj cov yam ntxwv ntawm kev hloov pauv zoo rau kev hloov pauv ntawm cov dej zoo uas kho los ntawm cov tshuaj kho dej nyoos, cov coagulation zoo thiab cov teebmeem purification, thiab tus nqi qis ntawm cov tshuaj.
Thaum xaiv cov organic flocculant (xws li:polyacrylamide PAM), nws feem ntau nyob ntawm seb puas siv anionic polyacrylamide, cationic polyacrylamide lossis nonionic polyacrylamide. Anionic polyacrylamides yog raws li qib hydrolysis. Kev xaiv cov cations feem ntau yog siv rau hauv sludge dewatering. Kev xaiv cov cationic polyacrylamide yog qhov tseem ceeb heev. Cov chaw kho dej phwj hauv nroog feem ntau siv cov cationic polyacrylamide nruab nrab-muaj zog. Cov cations tsis muaj zog feem ntau yog siv rau sludge dehydration hauv papermaking thiab luam ntawv thiab dyeing cog, thiab cov dej khib nyiab tshuaj feem ntau yog siv. Xaiv cov cations muaj zog thiab lwm yam. Txhua hom dej khib nyiab muaj nws tus kheej cov yam ntxwv. Non-ionic polyacrylamide feem ntau yog siv rau hauv cov xwm txheej acidic tsis muaj zog, thiab non-ionic PAM feem ntau yog siv rau hauv cov chaw luam ntawv thiab dyeing.
Cov neeg muag khoom siv kho dejqhia tias kev xaiv cov flocculants no yuav tsum tau txiav txim siab raws li qhov kev sim. Hauv qhov kev sim, txiav txim siab qhov kwv yees ntawm cov dosing, saib qhov ceev ntawm flocculation thiab sedimentation, xam tus nqi kho, thiab xaiv tus neeg sawv cev flocculation pheej yig thiab siv tau.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-19-2022