Xu Darong 1,2, Zhang Zhongzhi 2, Jiang Hao 1, Ma Zhigang 1
(1. Beijing Guoneng Zhongdian ike nchekwa na Environmental Protection Technology Co., Ltd., Beijing 100022; 2. China University of Petroleum (Beijing), Beijing 102249)
Abstract: n'ọhịa nke mmiri mkpofu na ngwọta ihe mkpofu, PAC na PAM ejirila ya mee ihe n'ọtụtụ ebe dị ka ndị na-efe efe na-efe efe na coagulant. Akwụkwọ a na-ewebata mmetụta ngwa na ọnọdụ nyocha nke pac-pam na mpaghara dị iche iche, na-akọwa nkenke nghọta na echiche nke ndị nchọpụta dị iche iche na nchikota pac-pam, ma nyochaa nke ọma ngwa ngwa chọrọ na ụkpụrụ nke pac-pam n'okpuru ọnọdụ nnwale dị iche iche na ọnọdụ ubi. Dabere na nsonaazụ ọdịnaya na nyocha nke nyocha, akwụkwọ akụkọ a na-akọwa ụkpụrụ nke ime pac-pam etinyere n'ọrụ ọnọdụ ọrụ dị iche iche, ma gosipụta na nchikota PAC na PAM nwekwara ntụpọ, yana ọnọdụ ngwa ya na usoro onunu kwesịrị ikpebi dịka ọnọdụ akọwapụtara.
isiokwu: polyaluminium chloride; Polyacrylamide; Ọgwụgwọ mmiri; Mgbagharị
0 Okwu mmalite
N'ime ụlọ ọrụ mmepụta ihe, ijikọta ojiji nke polyaluminium chloride (PAC) na polyacrylamide (PAM) iji gwọọ mmiri na-ekpofu mmiri na ihe mkpofu ndị yiri ya etolitela yinye teknụzụ tozuru okè, mana usoro ihe jikọrọ ya na-apụtachaghị ìhè, na usoro onunu ogwu maka ọnọdụ ọrụ dị iche iche na mpaghara dị iche iche dịkwa iche.
Akwụkwọ a na-enyocha nke ọma ọnụ ọgụgụ dị ukwuu nke akwụkwọ dị mkpa n'ụlọ na ná mba ọzọ, na-achịkọta usoro nchikota nke PAC na PAC, ma mee ọnụ ọgụgụ zuru ezu na nkwubi okwu dị iche iche na-ejikọta ya na mmetụta PAC na PAM dị na ụlọ ọrụ dị iche iche, nke nwere ihe nduzi maka nyocha ọzọ na mpaghara ndị metụtara ya.
1. Ihe atụ nyocha ngwa ụlọ nke pac-pam
A na-eji mmetụta crosslinking nke PAC na PAM mee ihe n'ụdị ndụ niile, mana usoro ọgwụgwọ na usoro ọgwụgwọ na-akwado dị iche iche maka ọnọdụ ọrụ dị iche iche na gburugburu ọgwụgwọ.
1.1 nsị ụlọ na sludge ime obodo
Zhao Yueyang (2013) na ndị ọzọ nwalere mmetụta coagulation nke PAM dị ka ihe enyemaka coagulant na PAC na PAFC site na iji usoro nyocha nke ime ụlọ. Nnwale ahụ chọpụtara na mmetụta coagulation nke PAC mgbe coagulation PAM mụbara nke ukwuu.
Wang Mutong (2010) na ndị ọzọ mụọ mmetụta ọgwụgwọ PAC + PA na nsị anụ ụlọ n'ime obodo, wee mụọ arụmọrụ COD na-egosi arụmọrụ na ihe ngosi ndị ọzọ site na nyocha orthogonal.
Lin Yingzi (2014) et al. Mụrụ akwalite mmetụta coagulation nke PAC na PAM na algae na ụlọ ọrụ ọgwụgwọ mmiri. Yang Hongmei (2017) et al. Mụọ mmetụta ọgwụgwọ nke ijikọta ọnụ na mmiri mkpofu kimchi, wee tụlee na uru pH kacha mma bụ 6.
Fu peiqian (2008) et al. Mụrụla mmetụta nke flocculant mejupụtara nke etinyere iji megharịa mmiri. Site n'ịleta nsonaazụ mwepụ nke adịghị ọcha dị ka turbidity, TP, COD na phosphate na ihe atụ mmiri, a na-achọpụta na flocculant mejupụtara nwere mmetụta dị mma na-ewepụ ihe ọ bụla.
Cao Longtian (2012) na ndị ọzọ nakweere usoro nke composite flocculation iji dozie nsogbu nke ngwa ngwa mmeghachi omume ngwa ngwa, ọkụ flocs na ike imikpu na mmiri usoro ọgwụgwọ na Northeast China n'ihi na obere okpomọkụ na oyi.
Liu Hao (2015) et al. Na-amụ mmetụta ọgwụgwọ nke composite flocculant na mgbagwoju anya siri ike na nkwụsịtụ nkwụsịtụ n'ime nsị ụlọ, wee chọpụta na ịgbakwunye ụfọdụ PAM flocculate mgbe ị na-agbakwunye PAM na PAC nwere ike ịkwalite mmetụta ọgwụgwọ ikpeazụ.
1.2 ibipụta na ịcha mmiri mkpofu na ide akwụkwọ
Zhang Lanhe (2015) et al. Gụtara mmetụta nhazi nke chitosan (CTS) na coagulant n'ịgwọ mmiri mkpofu akwụkwọ, wee chọpụta na ọ ka mma ịgbakwunye chitosan.
Ọnụego mwepụ nke COD na turbidity abawanyela site na 13.2% na 5.9%.
Xie Lin (2010) mụrụ mmetụta PAC na PAM jikọtara ọgwụgwọ nke idebe mmiri mkpofu.
Liu Zhiqiang (2013) na ndị ọzọ na-eji onwe-mere PAC na PAC composite flocculant jikọtara na ultrasonic na-emeso ibipụta na dyeing mmiri mkpofu. E kwubiri na mgbe uru pH dị n'etiti 11 na 13, PAC na-ebu ụzọ gbakwunye ma kpalie ya maka 2 min, wee tinye PAC ma kpalie maka 3 min, mmetụta ọgwụgwọ kachasị mma.
Zhou Danni (2016) na ndị ọzọ na-amụ mmetụta ọgwụgwọ PAC + PAM na nsị anụ ụlọ, tụnyere mmetụta ọgwụgwọ nke ihe ndị na-eme ngwa ngwa na ihe ndị dị ndụ, wee chọpụta na PAC + PAM dị mma karịa usoro ọgwụgwọ ndu na mwepụ mmetụta mmanụ, ma PAC + PAM dị mma karịa usoro ọgwụgwọ ndu n'ime mmiri dị mma.
Wang Zhizhi (2014) et al. Mụọ usoro ọgwụgwọ nke ịgwọ mmiri n'etiti ime akwụkwọ site na PAC + PAM coagulation dị ka akụkụ nke usoro ahụ. Mgbe usoro onunu ogwu nke PAC bụ 250 mg / L, usoro PAM bụ 0.7 mg / L, yana uru pH fọrọ nke nta ka ọ bụrụ nnọpụiche, ọnụego mwepụ COD ruru 68%.
Zuo Weiyuan (2018) na ndị ọzọ mụrụ wee jiri mmetụta flocculation agwakọta nke Fe3O4 / PAC / PAM. Nnwale ahụ na-egosi na mgbe nha nke atọ dị 1: 2: 1, mmetụta ọgwụgwọ nke ibipụta na ịcha mmiri na-adịghị mma bụ ihe kacha mma.
LV na-agụ (2010) et al. Mụọ mmetụta ọgwụgwọ nke ngwakọta PAC + PAM na mmiri mkpofu etiti. Nnyocha ahụ na-egosi na mmetụta flocculation mejupụtara bụ nke kacha mma na gburugburu acidic (pH 5). Usoro onunu ogwu nke PAC bụ 1200 mg / L, usoro onunu ogwu nke PAM bụ 120 mg / L, yana ọnụego mwepụ cod karịrị 60%.
1.3 coal chemical mmiri mkpofu na nchacha mmiri mkpofu
Yang Lei (2013) et al. Mụrụ mmetụta coagulation nke PAC + PAM na coal ụlọ ọrụ ọgwụgwọ mmiri na-ekpofu unyi, atụnyere mwepu ntughari n'okpuru dị iche iche oke, na-enye mgbanwe onunu ogwu nke PAM dị iche iche mbụ turbidity.
Fang Xiaoling (2014) na ndị ọzọ tụlere mmetụta coagulation nke PAC + Chi na PAC + PAM na mmiri mkpofu ọkụ. Ha kwubiri na PAC + Chi nwere mmetụta flocculation ka mma yana nrụpụta COD dị elu. Nsonaazụ nnwale gosiri na oge mkpali kacha mma bụ 10 min yana uru pH kacha mma bụ 7.
Deng Lei (2017) et al. Mụrụ mmetụta flocculation nke PAC + PAM na igbapu mmiri mkpofu mmiri, na ọnụego mwepụ COD ruru ihe karịrị 80%.
Wu Jinhua (2017) et al. Mụọ ọgwụgwọ nke mmiri na-ekpofu kemịkalụ coal site na coagulation. PAC bụ 2 g / L na PAM bụ 1 mg / L. nnwale ahụ gosipụtara na uru pH kacha mma bụ 8.
Guo Jinling (2009) et al. Mụọ mmetụta ọgwụgwọ mmiri nke flocculation mejupụtara wee tụlee na nsonaazụ mwepụ bụ nke kacha mma mgbe usoro ọgwụgwọ PAC bụ 24 mg / L yana PAM bụ 0.3 mg / L.
Lin Lu (2015) et al. Gụụrụ mmetụta flocculation nke nchikota pac-pam na mmanụ emulsified nke nwere mmiri mkpofu n'okpuru ọnọdụ dị iche iche, ma tụnyere mmetụta nke otu flocculant. Ọgwụ ikpeazụ bụ: PAC 30 mg / L, pam6 mg / L, ọnọdụ okpomọkụ 40 ℃, uru pH na-anọpụ iche na oge sedimentation maka ihe karịrị 30 min. N'okpuru ọnọdụ kachasị mma, nrụpụta COD na-ewepu ihe ruru 85%.
2 nkwubi okwu na aro
Ngwakọta nke polyaluminium chloride (PAC) na polyacrylamide (PAM) ejirila ya mee ihe n'akụkụ niile nke ndụ. O nwere ikike dị ukwuu n'ọhịa nke mmiri mkpofu na ọgwụgwọ sludge, na uru ụlọ ọrụ ya dị mkpa ka a chọpụtakwuo ya.
Usoro nchikota nke PAC na PAM na-adabere na ezigbo ductility nke yinye macromolecular PAM, jikọtara ya na Al3 + na PAC na - O na PAM iji mepụta usoro netwọkụ kwụsiri ike. Usoro netwọk ahụ nwere ike kpuchie ihe ndị ọzọ na-adịghị ọcha dị ka ihe siri ike na ụmụ irighiri mmanụ, ya mere ọ nwere mmetụta ọgwụgwọ dị mma maka mmiri mkpofu na ọtụtụ ụdị adịghị ọcha, karịsịa maka ịdị n'otu nke mmanụ na mmiri.
N'otu oge ahụ, nchikota nke PAC na PAM nwekwara ntụpọ. Ihe dị n'ime mmiri nke flocculate a kpụrụ dị elu, na nhazi ime ya kwụsiri ike na-eduga n'ihe dị elu maka ọgwụgwọ nke abụọ. Ya mere, n'ihu mmepe nke PAC jikọtara ya na PAM ka na-eche ihe isi ike na ihe ịma aka ihu.
Oge nzipu: Ọktoba 09-2021