Cov nroj tsuag dej uas twb muaj lawm tsom mus rau kev ua kom huv ntawm cov pa phem hauv cov dej nyoos, suav nrog cov tshuaj tsis muaj molecular soluble organic pollutants, thiab xyuas kom muaj kev nyab xeeb thiab ruaj khov ntawm cov dej zoo. Kev txhim kho thiab ntxiv dag zog rau cov txheej txheem kev lim dej ib txwm muaj tam sim no yog qhov kev siv nyiaj txiag zoo tshaj plaws los tswj cov organic cov ntsiab lus ntawm cov dej cog effluent. Hloov thiab ntxiv dag zog rau cov txheej txheem purification ib txwm tuaj yeem txhim kho kev kho kom zoo dua qub, txo cov dej tsis zoo, thiab txhim kho cov dej zoo. Hauv qab no kuv yuav ua peb yam ntawm kev txhim kho kev ntsuas kev hloov pauv.
1. Txhim kho coagulation
Lub hom phiaj ntawm kev txhim kho coagulation yog tsim nyog ntxiv cov organic thiab inorganic polymer coagulants, txhim kho kev sib xyaw ua ke, thiab txhim kho cov teebmeem coagulation. Nrog rau kev txhim kho ntawm kev ua haujlwm ntawm inorganic lossis organic flocculants; kev txhim kho thiab txhim kho cov khoom siv ntxiv dag zog rau kev sib tsoo particle, adsorption thiab flocculation kev loj hlob; lub zog ntawm cov txheej txheem flocculation, xws li optimizing lub coagulation stirring siv thiab txiav txim siab cov tshuaj tiv thaiv pH nqi. Qhov loj ntawm cov organic teeb meem tshem tawm tus nqi yog feem ntau cuam tshuam los ntawm yam xws li hom thiab qhov xwm ntawm coagulant, tus nqi ntawm coagulant ntxiv, thiab tus nqi pH. Cov coagulants ntau dhau yuav ua rau cov nqi kho mob thiab sludge ntim, yog li nrhiav kev nyab xeeb thiab txhim khu kev qha coagulants thiab pH qhov tseem ceeb yog qhov tseem ceeb.
2. Txhim kho sedimentation
Sedimentation cais yog ib feem tseem ceeb ntawm cov txheej txheem kev kho dej ib txwm muaj. Lub tshuab tshiab txhim kho sedimentation lub hom phiaj los txhim kho lub xeev ntws ntawm cov dej sedimentation, txo cov sedimentation nrug, thiab txhim kho cov sedimentation efficiency. Thaum cov dej nkag mus rau hauv cheeb tsam sedimentation, los ntawm cov txheej txheem ntawm sab saum toj-down concentration thiab flocculation ntawm sludge, lub nruam net capture, cheb, adsorption, co-teev nag xob nag cua thiab lwm yam series ntawm kev purification ntawm raw cov ntaub ntawv organic teeb meem yog tiav, thiaj li. ua kom tiav lub hom phiaj ntawm kev kho cov dej tsis huv nrog micro-polluted technology.
3. Txhim khu kev pom
Txhim khu kev pom technology yog los cog thiab yug me nyuam cov kab mob nyob rau saum npoo ntawm cov khoom lim uas tsis muaj cov tshuaj chlorination ua ntej, thiab siv cov tshuaj lom neeg los tshem tawm cov organic teeb meem hauv dej. Txhim khu kev pom zoo yog tso cai rau cov khoom lim kom tshem tawm cov turbidity thiab degrade organic teeb meem, ammonia nitrogen, nitrite nitrogen, thiab lwm yam. Txoj kev siv ntau dua yog siv lub tshuab lim dej. Ntawd yog, biofilm yog cog rau ntawm qhov chaw ntawm quartz xuab zeb ntawm cov lim zoo tib yam los kho cov dej tsis huv hauv micro. Cov txheej txheem no tsis ntxiv ib qho chaw thiab tuaj yeem ua tiav raws li cov lim dej uas twb muaj lawm. Nws yog ib txoj hauv kev zoo los daws cov dej zoo ntawm micro-polluted dej qhov chaw.
4. Muaj zog tua kab mob
Cov txheej txheem tshuaj tua kab mob chlorination ib txwm muaj kev txwv tsis pub siv thiab yuav tsim ntau yam tshuaj tua kab mob los ntawm cov khoom lag luam. Cov dej haus kev nyab xeeb kev nyab xeeb tshwm sim los ntawm nws maj mam raug them rau. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum siv ntau yam tshuaj tua kab mob xws li sodium hypochlorite, ozone, ultraviolet rays thiab lwm yam tshuaj tua kab mob uas muaj kev nyab xeeb thiab siv tau zoo dua, nrog rau kev siv tshuaj tua kab mob rau kev tua kab mob.
Hauv cov ntsiab lus, cov txheej txheem ib txwm siv dag zog ntawm cov nroj tsuag dej muaj ntau qhov txuas tseem ceeb. Los ntawm cov txheej txheem kev tshawb fawb thev naus laus zis kev kho mob, nws tuaj yeem tsis tsuas yog txhim kho kev huv ntawm cov dej hauv nroog kom zoo, tab sis kuj txhim kho cov txiaj ntsig kev lag luam ntawm cov nroj tsuag dej thaum ua kom muaj kev nyab xeeb ntawm cov dej haus rau cov pej xeem.
