Xu Darung 1,2, Zhang Zhongzhi 2, Jiang Hao 1, Ma Zhigang 1
(1. Beijing Guoneng Zhongdian kusunga mphamvu ndi Environmental Protection Technology Co., Ltd., Beijing 100022; 2. China University of Petroleum (Beijing), Beijing 102249)
Chidule: Pankhani yokhudza madzi otayira ndi zinyalala, PAC ndi PAM akhala akugwiritsidwa ntchito kwambiri ngati ma flocculant ndi ma coagulant othandizira. Pepalali likuwonetsa momwe pac-pam imagwiritsidwira ntchito komanso momwe imagwiritsidwira ntchito m'magawo osiyanasiyana, limafotokoza mwachidule kumvetsetsa ndi malingaliro a ofufuza osiyanasiyana pa kuphatikiza pac-pam, ndikusanthula mokwanira zofunikira ndi mfundo za pac-pam pansi pa mikhalidwe yosiyanasiyana yoyesera ndi mikhalidwe yamunda. Malinga ndi zomwe zili mkati ndi zotsatira za kusanthula kwa ndemangayi, pepalali likuwonetsa mfundo yamkati ya pac-pam yomwe imagwiritsidwa ntchito pamikhalidwe yosiyanasiyana yogwirira ntchito, ndipo likuwonetsa kuti kuphatikiza kwa PAC ndi PAM kulinso ndi zolakwika, ndipo njira yogwiritsira ntchito ndi mlingo wake ziyenera kusankhidwa malinga ndi mkhalidwe weniweni.
Mawu Ofunika: polyaluminium chloride; Polyacrylamide; Kuchiza madzi; Kusakaniza madzi
0 Chiyambi
Mu gawo la mafakitale, kugwiritsa ntchito pamodzi kwa polyaluminium chloride (PAC) ndi polyacrylamide (PAM) pochiza madzi otayidwa ndi zinyalala zofanana kwapanga unyolo waukadaulo wokhwima, koma njira yake yogwirira ntchito limodzi siikumveka bwino, ndipo chiŵerengero cha mlingo wa mikhalidwe yosiyanasiyana yogwirira ntchito m'magawo osiyanasiyana ndi chosiyana.
Pepalali likufufuza mokwanira mabuku ambiri ofunikira m'dziko muno ndi kunja, likufotokoza mwachidule njira yogwirizanitsa PAC ndi PAC, ndipo limapereka ziwerengero zambiri pa mfundo zosiyanasiyana zofufuza pamodzi ndi zotsatira zenizeni za PAC ndi PAM m'mafakitale osiyanasiyana, zomwe zili ndi tanthauzo lotsogolera pa kafukufuku wowonjezereka m'magawo ena okhudzana nawo.
1. Chitsanzo cha kafukufuku wa pac-pam wokhudza kugwiritsa ntchito mankhwala m'nyumba
Mphamvu yolumikizirana ya PAC ndi PAM imagwiritsidwa ntchito m'mbali zonse za moyo, koma mlingo ndi njira zothandizira chithandizo zimasiyana pazochitika zosiyanasiyana zogwirira ntchito komanso malo ochiritsira.
1.1 zimbudzi za m'nyumba ndi matope a m'matauni
Zhao Yueyang (2013) ndi ena anayesa mphamvu ya PAM yolimbitsa thupi ngati njira yothandizira kulimbitsa thupi ku PAC ndi PAFC pogwiritsa ntchito njira yoyesera mkati. Kuyeseraku kunapeza kuti mphamvu ya kulimbitsa thupi ya PAC pambuyo pa kulimbitsa thupi kwa PAM inawonjezeka kwambiri.
Wang Mutong (2010) ndi ena adaphunzira momwe PAC + PA imachiritsira zinyalala zapakhomo m'tawuni, ndipo adaphunzira momwe COD imachotsera bwino komanso zizindikiro zina kudzera mu zoyeserera za orthogonal.
Lin yingzi (2014) ndi ena. Anaphunzira za mphamvu ya PAC ndi PAM yolimbitsa makoma a algae m'malo oyeretsera madzi. Yang Hongmei (2017) ndi ena. Anaphunzira za mphamvu ya mankhwala yogwiritsidwa ntchito pamodzi pa madzi otayira a kimchi, ndipo anaona kuti pH yabwino kwambiri inali 6.
Fu peiqian (2008) ndi ena. Anaphunzira momwe flocculant yophatikizika imagwirira ntchito pogwiritsiranso ntchito madzi. Poyesa zotsatira za kuchotsa zinyalala monga turbidity, TP, COD ndi phosphate m'madzi, zapezeka kuti flocculant yophatikizika imakhala ndi zotsatira zabwino zochotsera zinyalala zamitundu yonse.
Cao Longtian (2012) ndi ena adagwiritsa ntchito njira yophatikizira flocculation kuti athetse mavuto a kuchepa kwa reaction rate, flocs zopepuka komanso zovuta kumira mu njira yoyeretsera madzi kumpoto chakum'mawa kwa China chifukwa cha kutentha kochepa m'nyengo yozizira.
Liu Hao (2015) ndi ena. Anaphunzira momwe flocculant yophatikizika imagwirira ntchito pochiza matenda ovuta komanso kuchepetsa kutayikira kwa madzi m'zimbudzi zapakhomo, ndipo adapeza kuti kuwonjezera kuchuluka kwa PAM flocculate pomwe kuwonjezera PAM ndi PAC kungathandize kuti chithandizocho chikhale chomaliza.
1.2 kusindikiza ndi kuyika utoto m'madzi otayira ndi kupanga mapepala
Zhang Lanhe (2015) ndi ena. Anaphunzira za mgwirizano wa chitosan (CTS) ndi coagulant pochiza madzi otayira mapepala, ndipo adapeza kuti ndibwino kuwonjezera chitosan.
Kuchuluka kwa COD ndi turbidity yochotsedwa kunawonjezeka ndi 13.2% ndi 5.9%.
Xie Lin (2010) adaphunzira za momwe PAC ndi PAM zimathandizira pokonza madzi otayira pogwiritsa ntchito mapepala.
Liu Zhiqiang (2013) ndi ena adagwiritsa ntchito PAC ndi PAC composite flocculant yopangidwa okha pamodzi ndi ultrasonic pochiza kusindikiza ndi kuyika utoto m'madzi otayira. Zinatsimikiziridwa kuti pamene pH inali pakati pa 11 ndi 13, PAC inawonjezedwa koyamba ndikusakanizidwa kwa mphindi ziwiri, kenako PAC inawonjezedwa ndikusakanizidwa kwa mphindi zitatu, zotsatira zake zinali zabwino kwambiri.
Zhou Danni (2016) ndi ena adaphunzira momwe PAC + PAM imachiritsira madzi otayira m'nyumba, poyerekeza momwe mankhwala ochizira a biological accelerator ndi mankhwala ochizira matenda a biological, ndipo adapeza kuti PAC + PAM inali yabwino kuposa njira yochizira matenda a biological pochotsa mafuta, koma PAC + PAM inali yabwino kwambiri kuposa njira yochizira matenda a biological pochiza poizoni wa madzi.
Wang Zhizhi (2014) ndi ena. Anaphunzira njira yochizira yopangira mapepala pogwiritsa ntchito madzi otayira apakatikati pogwiritsa ntchito PAC + PAM coagulation ngati gawo la njirayo. Pamene mlingo wa PAC uli 250 mg / L, mlingo wa PAM ndi 0.7 mg / L, ndipo pH imakhala pafupifupi yopanda mbali, kuchuluka kwa COD kuchotsa kumafika 68%.
Zuo Weiyuan (2018) ndi ena adafufuza ndikuyerekeza mphamvu yosakanikirana ya Fe3O4 / PAC / PAM. Kuyesaku kukuwonetsa kuti chiŵerengero cha zitatuzi chikakhala 1:2:1, mphamvu yochiritsira yosindikiza ndi kuyika utoto m'madzi otayira ndiyo yabwino kwambiri.
LV sineg (2010) ndi ena. Anaphunzira momwe PAC + PAM imagwirira ntchito pochiza madzi otayira apakatikati. Kafukufukuyu akuwonetsa kuti mphamvu ya flocculation yophatikizika ndiyo yabwino kwambiri m'malo okhala ndi asidi (pH 5). Mlingo wa PAC ndi 1200 mg / L, mlingo wa PAM ndi 120 mg / L, ndipo kuchuluka kwa cod removal kuli kopitilira 60%.
1.3 madzi otayira a mankhwala a malasha ndi madzi otayira oyenga
Yang Lei (2013) ndi ena. Anaphunzira momwe PAC + PAM imagwirira ntchito pochiza madzi otayira m'makampani a malasha, poyerekeza kutayira kotsala pansi pa ma ratio osiyanasiyana, ndipo anapereka mlingo wosinthidwa wa PAM malinga ndi kutayira koyambirira kosiyana.
Fang Xiaoling (2014) ndi ena anayerekezera mphamvu ya PAC + Chi ndi PAC + PAM yolumikizira madzi otayidwa m'malo oyeretsera. Anapeza kuti PAC + Chi inali ndi mphamvu yabwino yolumikizira madzi komanso mphamvu yabwino yochotsera COD. Zotsatira za kafukufukuyu zinasonyeza kuti nthawi yabwino yosakaniza inali mphindi 10 ndipo pH inali 7.
Deng Lei (2017) ndi ena. Anaphunzira momwe PAC + PAM imagwirira ntchito pobowola madzi otayira, ndipo kuchuluka kwa COD komwe kunachotsedwa kunafika pa 80%.
Wu Jinhua (2017) ndi ena. Anaphunzira za mankhwala ophera madzi otayika a malasha pogwiritsa ntchito kugawanika kwa madzi. PAC ndi 2 g / L ndipo PAM ndi 1 mg / L. Kuyeseraku kukuwonetsa kuti pH yabwino kwambiri ndi 8.
Guo Jinling (2009) ndi ena. Anaphunzira za mphamvu ya madzi yokhudzana ndi kusakaniza kwa composite flocculation ndipo anaona kuti mphamvu yochotsera inali yabwino kwambiri pamene mlingo wa PAC unali 24 mg / L ndipo PAM unali 0.3 mg / L.
Lin Lu (2015) ndi ena. Anaphunzira za mphamvu ya flocculation ya pac-pam yosakaniza pa mafuta oyeretsedwa okhala ndi madzi otayira pansi pa mikhalidwe yosiyanasiyana, ndipo anayerekeza mphamvu ya flocculant imodzi. Mlingo womaliza ndi: PAC 30 mg / L, pam6 mg / L, kutentha kwa ambient 40 ℃, pH yapakati komanso nthawi yokhazikika kwa mphindi zoposa 30. Pansi pa mikhalidwe yabwino kwambiri, mphamvu yochotsera COD imafika pafupifupi 85%.
2 Mapeto ndi malingaliro
Kuphatikiza kwa polyaluminium chloride (PAC) ndi polyacrylamide (PAM) kwagwiritsidwa ntchito kwambiri m'mbali zonse za moyo. Kuli ndi kuthekera kwakukulu pa ntchito yokonza madzi otayira ndi matope, ndipo kufunika kwake m'mafakitale kuyenera kufufuzidwa kwambiri.
Kapangidwe kake ka PAC ndi PAM kamadalira kwambiri kusinthasintha kwa unyolo wa mamolekyulu a PAM, kuphatikiza ndi Al3 + mu PAC ndi - O mu PAM kuti apange kapangidwe ka netiweki kokhazikika. Kapangidwe ka netiweki kangathe kuphimba zonyansa zina monga tinthu tolimba ndi madontho a mafuta, kotero kali ndi mphamvu yabwino kwambiri yochizira madzi otayira okhala ndi zonyansa zosiyanasiyana, makamaka pakukhala pamodzi kwa mafuta ndi madzi.
Nthawi yomweyo, kuphatikiza kwa PAC ndi PAM kulinso ndi zolakwika. Madzi omwe ali mu flocculate yopangidwa ndi ochuluka, ndipo kapangidwe kake kokhazikika kamkati kamapangitsa kuti pakhale zofunikira zambiri pakuchiza kwachiwiri. Chifukwa chake, kupita patsogolo kwa PAC pamodzi ndi PAM kukadali ndi zovuta komanso zovuta.
Nthawi yotumizira: Okutobala-09-2021