Xu Darung 1,2, Zhang Zhongzhi 2, Jiang Hao 1, Ma Zhigang 1
(1. Beijing Guoneng Zhongdian kasamalidwe ka mphamvu ndi Environmental Protection Technology Co., Ltd., Beijing 100022; 2. China University of Petroleum (Beijing), Beijing 102249)
Zachidule: m'munda wamadzi otayira ndi zotsalira za zinyalala, PAC ndi PAM zakhala zikugwiritsidwa ntchito kwambiri ngati flocculants wamba ndi coagulant aids. Pepalali likuwonetsa momwe ntchito ikugwiritsidwira ntchito ndi kafukufuku wa pac-pam m'madera osiyanasiyana, ikufotokoza mwachidule kumvetsetsa ndi malingaliro a ochita kafukufuku osiyanasiyana pa kuphatikiza kwa pac-pam, ndikusanthula mwatsatanetsatane zofunikira zogwiritsira ntchito ndi mfundo za pac-pam pansi pa zochitika zosiyanasiyana zoyesera ndi zochitika zakumunda. Malinga ndi zomwe zili ndi zotsatira za kuwunikaku, pepalali likuwonetsa mfundo yamkati ya pac-pam yomwe imagwiritsidwa ntchito pazinthu zosiyanasiyana zogwirira ntchito, ndipo ikuwonetsa kuti kuphatikiza kwa PAC ndi PAM kulinso ndi zolakwika, ndipo mawonekedwe ake ogwiritsira ntchito ndi mlingo wake ziyenera kuganiziridwa molingana ndi momwe zilili.
Mawu ofunika: polyaluminium chloride; Polyacrylamide; Kuchiza madzi; Flocculation
0 Chiyambi
M'munda mafakitale, ophatikizana ntchito polyaluminium kolorayidi (PAC) ndi Polyacrylamide (PAM) kuchitira madzi oipa ndi zinyalala ofanana wapanga okhwima luso unyolo, koma olowa kanthu limagwirira ake si bwino, ndi mlingo chiŵerengero cha zinthu zosiyanasiyana ntchito m'madera osiyanasiyana ndi osiyana.
Pepalali limasanthula mwatsatanetsatane kuchuluka kwa zolemba zofunikira kunyumba ndi kunja, limafotokoza mwachidule njira yophatikizira ya PAC ndi PAC, ndikupanga ziwerengero zatsatanetsatane paziganizo zosiyanasiyana zamawu ophatikizana ndi zotsatira zenizeni za PAC ndi PAM m'mafakitale osiyanasiyana, omwe ali ndi tanthauzo lotsogolera pakufufuza kwina m'magawo ofananira.
1. Chitsanzo cha kafukufuku wapakhomo pac-pam
Kuphatikizika kwa PAC ndi PAM kumagwiritsidwa ntchito m'mbali zonse za moyo, koma mlingo ndi njira zothandizira chithandizo ndizosiyana pazochitika zosiyanasiyana zogwirira ntchito ndi malo ochiritsira.
1.1 zimbudzi zapanyumba ndi zinyalala zamatauni
Zhao Yueyang (2013) ndi ena anayesa coagulation zotsatira za PAM monga coagulant thandizo kwa PAC ndi PAFC pogwiritsa ntchito njira ya m'nyumba mayeso. Kuyesaku kudapeza kuti coagulation ya PAC pambuyo pa PAM coagulation idakula kwambiri.
Wang Mutong (2010) ndi ena anaphunzira mmene mankhwala PAC + PA pa zimbudzi zapakhomo m'tauni, ndipo anaphunzira COD kuchotsa dzuwa ndi zizindikiro zina kudzera kuyesera orthogonal.
Lin yingzi (2014) et al. Adaphunzira momwe PAC ndi PAM imagwirira ntchito pa algae m'malo opangira madzi. Yang Hongmei (2017) et al. Anaphunzira momwe angagwiritsire ntchito mankhwala ophatikizana pamadzi a kimchi, ndipo adawona kuti pH yamtengo wapatali inali 6.
Fu peiqian (2008) et al. Anaphunzira zotsatira za gulu flocculant ntchito renso madzi. Poyeza zotsatira zochotsa zonyansa monga turbidity, TP, COD ndi phosphate mu zitsanzo za madzi, zimapezeka kuti flocculant yophatikizika imakhala ndi zotsatira zabwino zochotsera zonyansa zamitundu yonse.
Cao Longtian (2012) ndi ena anatengera njira gulu flocculation kuthetsa mavuto a pang'onopang'ono anachita mlingo, flocs kuwala ndi zovuta kumira mu ndondomeko madzi mankhwala kumpoto chakum'mawa kwa China chifukwa cha kutentha otsika m'nyengo yozizira.
Liu Hao (2015) et al. Anaphunzira zotsatira za chithandizo cha composite flocculant pa zovuta zowonongeka ndi turbidity kuchepetsa kuyimitsidwa mu zimbudzi zapakhomo, ndipo adapeza kuti kuwonjezera kuchuluka kwa PAM flocculate pamene kuwonjezera PAM ndi PAC kungalimbikitse chithandizo chomaliza.
1.2 kusindikiza ndi kudaya madzi oipa ndi kupanga mapepala otayira
Zhang Lanhe (2015) et al. Anaphunzira za coordination effect ya chitosan (CTS) ndi coagulant pochiza madzi oipa opangira mapepala, ndipo adapeza kuti ndi bwino kuwonjezera chitosan.
Mitengo yochotsa COD ndi turbidity idakwera ndi 13.2% ndi 5.9%.
Xie Lin (2010) adaphunzira zotsatira za PAC ndi PAM kuphatikiza chithandizo chamadzi otayira pamapepala.
Liu Zhiqiang (2013) ndi ena ntchito kudzikonda anapanga PAC ndi PAC gulu flocculant pamodzi akupanga kuchitira kusindikiza ndi kudaya madzi oipa. Zinatsimikiziridwa kuti pamene mtengo wa pH unali pakati pa 11 ndi 13, PAC idawonjezeredwa poyamba ndikugwedezeka kwa 2 min, ndiyeno PAC inawonjezeredwa ndi kusonkhezeredwa kwa 3 min, zotsatira za mankhwala zinali zabwino kwambiri.
Zhou Danni (2016) ndi ena anaphunzira zotsatira za mankhwala a PAC + PAM pa zimbudzi zapakhomo, poyerekeza zotsatira za mankhwala accelerator kwachilengedwenso accelerator ndi tizilombo toyambitsa matenda, ndipo anapeza kuti PAC + PAM anali bwino kuposa njira kwachilengedwenso mankhwala mu kuchotsa zotsatira za mafuta, koma PAC + PAM anali bwino kwambiri kuposa njira kwachilengedwenso mankhwala mu madzi khalidwe kawopsedwe.
Wang Zhizhi (2014) et al. Anaphunzira njira yochiritsira yopangira mapepala apakati pamadzi onyansa ndi PAC + PAM coagulation monga gawo la njirayo. Pamene mlingo wa PAC ndi 250 mg / L, mlingo wa PAM ndi 0.7 mg / L, ndipo pH mtengo ndi pafupifupi ndale, mlingo kuchotsa COD kufika 68%.
Zuo Weiyuan (2018) ndi ena adaphunzira ndikuyerekeza kusakanikirana kosakanikirana kwa Fe3O4 / PAC / PAM. Mayesowa akuwonetsa kuti chiŵerengero cha atatuwa ndi 1: 2: 1, zotsatira zochiritsira za kusindikiza ndi kudaya madzi onyansa ndi abwino kwambiri.
LV sining (2010) et al. Anaphunzira momwe angachiritsire PAC + PAM kuphatikiza pamadzi onyansa apakati. Kafukufukuyu akuwonetsa kuti flocculation effect ndi yabwino kwambiri m'malo okhala acidic (pH 5). Mlingo wa PAC ndi 1200 mg / L, mlingo wa PAM ndi 120 mg / L, ndipo mulingo wochotsa cod ndi wopitilira 60%.
1.3 madzi otayira a malasha ndi kuyenga madzi oipa
Yang Lei (2013) et al. Anaphunzira momwe PAC + PAM imakhudzidwira m'mafakitale a malasha, kuyerekeza ndi turbidity yotsalira pansi pa magawo osiyanasiyana, ndikupereka mlingo wosinthidwa wa PAM molingana ndi turbidity yoyambirira.
Fang Xiaoling (2014) ndi ena anayerekezera zotsatira za coagulation za PAC + Chi ndi PAC + PAM pamadzi onyansa oyeretsera. Iwo adatsimikiza kuti PAC + Chi inali ndi zotsatira zabwino za flocculation komanso kuyendetsa bwino kwa COD kuchotsa. Zotsatira zoyeserera zidawonetsa kuti nthawi yabwino kwambiri yotsitsimula inali 10 min ndipo pH yabwino kwambiri inali 7.
Deng Lei (2017) et al. Anaphunzira momwe PAC + PAM imayendera pobowola madzi onyansa amadzimadzi, ndipo kuchuluka kwa COD kuchotsa kwafika kupitirira 80%.
Wu Jinhua (2017) et al. Anaphunzira mankhwala a malasha mankhwala watewater ndi coagulation. PAC ndi 2 g / L ndipo PAM ndi 1 mg / L. kuyesa kukuwonetsa kuti pH yabwino kwambiri ndi 8.
Guo Jinling (2009) et al. Anaphunzira momwe madzi amachitira ndi flocculation yamagulu ndipo adawona kuti kuchotsedwa kwake kunali kopambana pamene mlingo wa PAC unali 24 mg / L ndipo PAM unali 0.3 mg / L.
Lin Lu (2015) et al. Anaphunzira flocculation zotsatira za kuphatikiza pac-pam pa mafuta emulsified okhala ndi madzi oipa pansi pa mikhalidwe yosiyanasiyana, ndi kuyerekeza zotsatira za single flocculant. Mlingo womaliza ndi: PAC 30 mg / L, pam6 mg / L, kutentha kozungulira 40 ℃, kusalowerera ndale pH ndi nthawi ya sedimentation yopitilira 30 min. Pazikhalidwe zabwino kwambiri, kuchotsera kwa COD kumafika pafupifupi 85%.
2 zomaliza ndi malingaliro
Kuphatikiza kwa polyaluminium chloride (PAC) ndi polyacrylamide (PAM) kwagwiritsidwa ntchito kwambiri m'magulu onse a moyo. Ili ndi kuthekera kwakukulu pantchito yamadzi otayira ndi matope, ndipo mtengo wake wamafakitale uyenera kufufuzidwanso.
Makina ophatikizika a PAC ndi PAM makamaka amadalira ductility yabwino kwambiri ya PAM macromolecular chain, kuphatikiza Al3 + mu PAC ndi - O mu PAM kuti apange mawonekedwe okhazikika a network. Kapangidwe maukonde akhoza stably envulopu zosafunika zina monga particles olimba ndi m'malovu mafuta, kotero ali ndi zotsatira zabwino kwambiri mankhwala kwa madzi oipa ndi mitundu yambiri ya zonyansa, makamaka chifukwa coexistence mafuta ndi madzi.
Nthawi yomweyo, kuphatikiza kwa PAC ndi PAM kulinso ndi zolakwika. Madzi opangidwa ndi flocculate ndi apamwamba, ndipo mawonekedwe ake okhazikika amkati amatsogolera ku zofunikira zapamwamba za chithandizo chachiwiri. Chifukwa chake, kupititsa patsogolo kwa PAC kuphatikiza ndi PAM kumakumanabe ndi zovuta komanso zovuta.
Nthawi yotumiza: Oct-09-2021