Nkag siab lub hauv paus ntsiab lus ntawm kev kho dej phwj tuaj

Nrog txoj kev loj hlob ntawm kev lag luam, dej kev ua qias tuaj zuj zus tuaj, lub xeev tau maj mam nce ntxiv kev siv cov dej phwj hauv nroog, tshwj xeeb tshaj yog nyob rau xyoo tas los no, qhov ntsuas ntawm nws cov peev nyiaj txuas ntxiv nthuav dav, thiab kev tsim kho ceev ntawm cov dej phwj tuaj cov nroj tsuag kho tau nrawm heev. Ntau tus neeg xav paub, dab tsi Puas yog cov txheej txheem kho cov dej phwj tuaj? Ua kom pom tseeb hauv ib tsab xov xwm. Nkag siab lub hauv paus ntsiab lus ntawm kev kho dej phwj tuaj

Tsuas muaj ob txoj kev kho dej phwj tuaj: ib qho yog kev sib cais, thiab lwm qhov yog hloov dua siab tshiab.Tau taub lub hauv paus ntsiab lus ntawm kev kho dej phwj tuaj

Kev sib cais yog cais qee cov pa phem hauv cov dej phwj tuaj lub cev, cov kev ntsuas tshwj xeeb suav nrog nag lossis daus, flocculation, centrifugation, huab cua flotation, tshuab thiab lwm yam, lub hauv paus lub cev thiab chemical txoj kev. Feem ntau, cov pa phem hauv cov dej phwj tuaj xws li cov khoom organic tuaj yeem raug tshem tawm tom qab kev sib cais ua ntej thiab kev kho mob, thiab cov kev xav tau yog tsis siab, yog li nws tuaj yeem raug tso tawm ncaj qha. Qhov no yog hu ua kev ua thawj coj.

Qee cov pa phem tsis tuaj yeem sib cais tau zoo, xws li yaj organic teeb meem, ammonia nitrogen, phosphates, uas yuav tsum tau hloov mus rau hauv yam tsis muaj teeb meem, lossis cov khoom sib cais yooj yim. Qhov tseem ceeb tshaj plaws Cov txheej txheem biochemical hauv kev kho dej phwj yog kev hloov pauv ua haujlwm piv txwv, yaj organic teeb meem yog tshem tawm los ntawm converting organic teeb meem rau carbon dioxide (uas feem ntau tsis muaj teeb meem thiab yooj yim sib cais los ntawm dej) thiab lom sludge (teeb meem, tab sis kuj yooj yim precipitated thiab sib cais). Qhov no hu ua Secondary processing. Muaj ntau txoj kev hloov dua siab tshiab, xws li ntau yam oxidation siab heev, acid-base neutralization thiab lwm yam. Lub cyanide Cov dej phwj tuaj ua los ntawm Tianjin tawg tawg tuaj yeem tsuas yog tawg los ntawm cov muaj zog oxidation ntawm hydrogen peroxide kom tawg C-N daim ntawv cog lus thiab ua rau nws tsis muaj mob.

Cov txheej txheem ntawm cov kav dej phwj hauv tsev feem ntau yog 1 daim phiaj 2 thawj nag lossis daus 3 biochemical kev kho mob 4 theem nrab nag lossis daus 5 tshuaj tua kab mob. Los ntawm kev faib tawm saum toj no, 124 yog kev sib cais thiab 35 yog kev hloov pauv. Qhov no cais hom txheej txheem, txawm tias ruaj khov thiab yooj yim, tab sis occupies ib cheeb tsam loj, cov nqi tsim kho siab, lub sijhawm nyob ntev (tuaj yeem nkag siab tias qhov loj ntim ntawm cov qauv nyob ib cheeb tsam loj).

Tam sim no cov thev naus laus zis tshiab tau nce siab los ua ke sib cais thiab hloov dua siab tshiab rau hauv cov txheej txheem los txo cov nqi thiab txhim kho efficiency, xws li membrane biological treatment process (MBR), uas yog biochemical txheej txheem thiab thawj thiab theem nrab sedimentation rau hauv lub pas dej ua ke, yog li obviously lub hneev taw tau txo qis heev. Txawm hais tias tus nqi ntawm cov txheej txheem membrane yog tseem siab, nrog rau kev nce qib ntawm technology, tus nqi yuav qis dua thiab qis dua, thiab nws yuav nrov dua.