Xu Darong 1,2, Zhang Zhongzhi 2, Jiang Hao 1, Ma Zhigang 1
(1. Beijing Guoneng Zhongdian kev txuag hluav taws xob thiab kev tiv thaiv ib puag ncig Technology Co., Ltd., Beijing 100022; 2. Tuam Tshoj University of Petroleum (Beijing), Beijing 102249)
Abstract: hauv kev kho cov dej khib nyiab thiab cov khib nyiab pov tseg, PAC thiab PAM tau siv dav dav ua cov flocculants thiab coagulant aids. Daim ntawv no qhia txog kev siv thiab kev tshawb fawb ntawm pac-pam hauv ntau qhov chaw sib txawv, piav qhia luv luv txog kev nkag siab thiab kev xav ntawm cov kws tshawb fawb sib txawv txog kev sib xyaw ua ke ntawm pac-pam, thiab tshuaj xyuas cov kev xav tau thiab cov ntsiab cai ntawm pac-pam hauv qab ntau yam kev sim thiab cov xwm txheej hauv thaj chaw. Raws li cov ntsiab lus thiab cov txiaj ntsig ntawm kev tshuaj xyuas, daim ntawv no taw qhia txog lub hauv paus ntsiab lus sab hauv ntawm pac-pam siv rau ntau yam kev ua haujlwm, thiab taw qhia tias kev sib xyaw ua ke ntawm PAC thiab PAM kuj muaj qhov tsis zoo, thiab nws hom kev siv thiab koob tshuaj yuav tsum tau txiav txim siab raws li qhov xwm txheej tshwj xeeb.
Cov Lus Tseem Ceeb: polyaluminium chloride; Polyacrylamide; Kev Kho Dej; Flocculation
0 Kev Taw Qhia
Hauv kev lag luam kev lag luam, kev siv ua ke ntawm polyaluminium chloride (PAC) thiab polyacrylamide (PAM) los kho cov dej khib nyiab thiab cov khib nyiab zoo sib xws tau tsim cov saw hlau thev naus laus zis, tab sis nws cov txheej txheem ua haujlwm sib koom ua ke tsis meej, thiab qhov sib piv ntawm cov tshuaj rau cov xwm txheej ua haujlwm sib txawv hauv ntau qhov chaw kuj txawv.
Daim ntawv no tshuaj xyuas ntau yam ntaub ntawv tseem ceeb hauv tsev thiab txawv teb chaws, sau luv luv txog kev sib xyaw ua ke ntawm PAC thiab PAC, thiab ua cov ntaub ntawv qhia txog ntau yam kev xaus lus ua ke nrog cov txiaj ntsig tiag tiag ntawm PAC thiab PAM hauv ntau yam lag luam, uas muaj qhov tseem ceeb rau kev tshawb fawb ntxiv hauv cov teb cuam tshuam.
1. Piv txwv ntawm kev tshawb fawb txog kev siv hauv tsev ntawm pac-pam
Qhov cuam tshuam ntawm PAC thiab PAM siv rau txhua qhov chaw ntawm lub neej, tab sis cov koob tshuaj thiab cov txheej txheem txhawb nqa kev kho mob sib txawv rau cov xwm txheej ua haujlwm sib txawv thiab cov chaw kho mob.
1.1 Cov dej phwj hauv tsev thiab cov av nkos hauv nroog
Zhao Yueyang (2013) thiab lwm tus tau sim cov nyhuv coagulation ntawm PAM ua ib qho kev pab coagulant rau PAC thiab PAFC los ntawm kev siv txoj kev kuaj sab hauv tsev. Qhov kev sim pom tias cov nyhuv coagulation ntawm PAC tom qab PAM coagulation tau nce ntxiv heev.
Wang Mutong (2010) thiab lwm tus tau kawm txog kev kho mob ntawm PAC + PA rau cov dej phwj hauv tsev hauv ib lub nroog, thiab kawm txog kev tshem tawm COD thiab lwm yam ntsuas los ntawm kev sim orthogonal.
Lin yingzi (2014) thiab lwm tus. Kawm txog cov nyhuv coagulation ntawm PAC thiab PAM rau algae hauv lub chaw kho dej. Yang Hongmei (2017) thiab lwm tus. Kawm txog cov nyhuv kho ntawm kev siv ua ke ntawm kimchi dej khib nyiab, thiab xav tias tus nqi pH zoo tshaj plaws yog 6.
Fu peiqian (2008) et al. Kawm txog cov nyhuv ntawm cov tshuaj flocculant uas siv rau kev siv dej dua. Los ntawm kev ntsuas cov teebmeem tshem tawm ntawm cov khoom tsis huv xws li turbidity, TP, COD thiab phosphate hauv cov qauv dej, nws pom tias cov tshuaj flocculant muaj cov nyhuv tshem tawm zoo rau txhua yam khoom tsis huv.
Cao Longtian (2012) thiab lwm tus tau siv txoj kev sib xyaw ua ke los daws cov teeb meem ntawm kev ua qeeb qeeb, cov flocs sib dua thiab nyuaj rau tog hauv cov txheej txheem kho dej hauv Northeast China vim qhov kub qis thaum lub caij ntuj no.
Liu Hao (2015) thiab lwm tus tau kawm txog kev kho mob ntawm cov khoom sib xyaw ua ke ntawm cov dej noo uas nyuaj rau kev tso dej thiab kev txo qhov turbidity hauv cov dej phwj hauv tsev, thiab pom tias kev ntxiv qee qhov PAM flocculate thaum ntxiv PAM thiab PAC tuaj yeem txhawb nqa qhov kev kho mob kawg.
1.2 luam ntawv thiab zas xim dej khib nyiab thiab cov dej khib nyiab ua ntawv
Zhang Lanhe (2015) et al. Kawm txog kev sib koom tes ntawm chitosan (CTS) thiab coagulant hauv kev kho cov dej khib nyiab ua ntawv, thiab pom tias nws zoo dua los ntxiv chitosan
Cov nqi tshem tawm ntawm COD thiab turbidity tau nce ntxiv los ntawm 13.2% thiab 5.9%.
Xie Lin (2010) tau kawm txog qhov cuam tshuam ntawm PAC thiab PAM ua ke kho cov dej khib nyiab ua ntawv.
Liu Zhiqiang (2013) thiab lwm tus siv cov PAC ua tus kheej thiab PAC composite flocculant ua ke nrog ultrasonic los kho cov dej khib nyiab luam ntawv thiab zas xim. Nws tau xaus lus tias thaum tus nqi pH nyob nruab nrab ntawm 11 thiab 13, PAC tau ntxiv ua ntej thiab do rau 2 feeb, thiab tom qab ntawd PAC tau ntxiv thiab do rau 3 feeb, qhov txiaj ntsig kho tau zoo tshaj plaws.
Zhou Danni (2016) thiab lwm tus tau kawm txog kev kho mob ntawm PAC + PAM rau cov dej phwj hauv tsev, piv rau kev kho mob ntawm cov tshuaj ua kom nrawm dua thiab tshuaj tua kab mob, thiab pom tias PAC + PAM zoo dua li txoj kev kho mob hauv kev tshem tawm cov roj, tab sis PAC + PAM zoo dua li txoj kev kho mob hauv kev ua kom dej tsis zoo.
Wang Zhizhi (2014) thiab lwm tus tau kawm txog txoj kev kho cov dej khib nyiab theem nrab los ntawm kev siv PAC + PAM coagulation ua ib feem ntawm txoj kev kho. Thaum cov tshuaj PAC yog 250 mg / L, cov tshuaj PAM yog 0.7 mg / L, thiab tus nqi pH yuav luag nruab nrab, tus nqi tshem tawm COD ncav cuag 68%.
Zuo Weiyuan (2018) thiab lwm tus tau kawm thiab piv rau cov nyhuv sib xyaw ntawm Fe3O4 / PAC / PAM. Qhov kev sim qhia tau hais tias thaum qhov sib piv ntawm peb yog 1: 2: 1, cov nyhuv kho ntawm kev luam ntawv thiab zas xim dej khib nyiab yog qhov zoo tshaj plaws.
LV sining (2010) et al. Kawm txog kev kho mob ntawm PAC + PAM ua ke rau cov dej khib nyiab theem nrab. Kev tshawb fawb qhia tau hais tias cov nyhuv flocculation sib xyaw yog qhov zoo tshaj plaws hauv qhov chaw acidic (pH 5). Cov koob tshuaj ntawm PAC yog 1200 mg / L, cov koob tshuaj ntawm PAM yog 120 mg / L, thiab tus nqi tshem tawm cod yog ntau dua 60%.
1.3 Cov dej khib nyiab tshuaj lom neeg thiab cov dej khib nyiab ua kom huv si
Yang Lei (2013) thiab lwm tus. Kawm txog cov nyhuv coagulation ntawm PAC + PAM hauv kev kho dej khib nyiab hauv kev lag luam thee, piv rau qhov seem turbidity nyob rau hauv ntau qhov sib piv, thiab muab cov tshuaj kho ntawm PAM raws li qhov pib turbidity sib txawv.
Fang Xiaoling (2014) thiab lwm tus tau piv rau qhov cuam tshuam ntawm PAC + Chi thiab PAC + PAM rau cov dej khib nyiab hauv chaw ua dej khib nyiab. Lawv xaus lus tias PAC + Chi muaj cov nyhuv flocculation zoo dua thiab muaj txiaj ntsig zoo dua rau kev tshem tawm COD. Cov txiaj ntsig ntawm kev sim qhia tau tias lub sijhawm sib tov zoo tshaj plaws yog 10 feeb thiab tus nqi pH zoo tshaj plaws yog 7.
Deng Lei (2017) et al. Kawm txog cov nyhuv ntawm PAC + PAM rau cov dej khib nyiab, thiab tus nqi tshem tawm COD tau ntau dua 80%.
Wu Jinhua (2017) et al. Kawm txog kev kho cov dej khib nyiab los ntawm kev coagulation. PAC yog 2 g / L thiab PAM yog 1 mg / L. qhov kev sim qhia tau hais tias tus nqi pH zoo tshaj plaws yog 8.
Guo Jinling (2009) et al. Kawm txog cov txiaj ntsig ntawm kev kho dej ntawm cov khoom sib xyaw ua ke thiab xav tias qhov kev tshem tawm zoo tshaj plaws thaum cov koob tshuaj ntawm PAC yog 24 mg / L thiab PAM yog 0.3 mg / L.
Lin Lu (2015) thiab lwm tus. Kawm txog cov nyhuv ntawm kev sib xyaw pac-pam ntawm cov roj emulsified uas muaj cov dej khib nyiab nyob rau hauv ntau yam xwm txheej, thiab piv rau cov nyhuv ntawm ib qho flocculant. Qhov kawg koob tshuaj yog: PAC 30 mg / L, pam6 mg / L, qhov kub thiab txias ambient 40 ℃, pH nruab nrab thiab lub sijhawm sedimentation ntau dua 30 feeb. Nyob rau hauv cov xwm txheej zoo tshaj plaws, COD tshem tawm efficiency ncav cuag li 85%.
2 xaus lus thiab cov lus qhia
Kev sib xyaw ua ke ntawm polyaluminium chloride (PAC) thiab polyacrylamide (PAM) tau siv dav hauv txhua qhov chaw ntawm lub neej. Nws muaj peev xwm zoo heev hauv kev kho dej khib nyiab thiab sludge, thiab nws cov txiaj ntsig kev lag luam yuav tsum tau tshawb nrhiav ntxiv.
Lub tshuab ua ke ntawm PAC thiab PAM feem ntau nyob ntawm qhov zoo ntawm PAM macromolecular saw, ua ke nrog Al3 + hauv PAC thiab -O hauv PAM los tsim cov qauv network ruaj khov dua. Cov qauv network tuaj yeem ruaj khov rau lwm yam tsis huv xws li cov khoom khov thiab cov roj poob, yog li nws muaj cov txiaj ntsig zoo rau kev kho dej khib nyiab nrog ntau hom tsis huv, tshwj xeeb tshaj yog rau kev sib koom ua ke ntawm roj thiab dej.
Tib lub sijhawm, kev sib xyaw ua ke ntawm PAC thiab PAM kuj muaj qhov tsis zoo. Cov dej hauv cov flocculate uas tsim tau siab, thiab nws cov qauv sab hauv ruaj khov ua rau muaj kev xav tau ntau dua rau kev kho mob thib ob. Yog li ntawd, kev txhim kho ntxiv ntawm PAC ua ke nrog PAM tseem ntsib teeb meem thiab kev cov nyom.
Lub sijhawm tshaj tawm: Lub Kaum Hli-09-2021