Tsis ntev los no, ib lub tuam txhab Suav hauv kev koom tes nrog nws cov neeg koom tes, tau tsim cov txheej txheem tshiab los ua ke nrog kev kho mob lom neeg thiab daim ntawv thov daim nyias nyias. Ceramic lim siv cov kab mob kom tshem tawm cov organic teeb meem thiab ammonia nitrogen los ntawm cov dej, thaum lub ceramic membrane ntxiv tshem tawm cov kab mob, turbidity, thiab tshem tawm cov khib nyiab, ua kom muaj txiaj ntsig zoo -kua sib cais. Ob qho tib si ua haujlwm ua ke, txhua qhov ua tiav nws cov haujlwm tshwj xeeb.
I. Txheej txheem txheej txheem
Cov txheej txheem ua ke no siv cov dej qias neeg me ntsis ua piv txwv, tsim kom muaj cov lim dej ntawm cov khoom siv roj ntsha tuaj yeem ua ke-paj phaj ceramic membrane ua ke txheej txheem. Cov dej turbidity yog 0.5 ~ 3.2 NTU, DOC 2.1 ~ 4.0 mg / L, thiab tom qab ammonia nitrogen ≈0 mg / L. Hauv kev sim, ammonium chloride tau ntxiv kom nce cov ammonia nitrogen rau 1.5 ~ 2.0 mg / L kom simulate cov pa phem. Siv 8-10 hli ceramic granules ua lim xov xwm, lub -Al₂O₃ tiaj-phaj ceramic membrane muaj qhov pom zoo ntawm 0.0196 m². Lub kaw lus ua haujlwm ntawm qhov flux ntawm 40 LMH thiab lub voj voog pom ntawm 2 h, nrog rau cov khoom siv hluav taws xob ncaj qha los ntawm kev ua haujlwm raws li kev tswj hwm.
II. Dej Purification Efficiency
Cov txheej txheem ua ke ua tiav qib kev tshem tawm cov pa phem, ua rau muaj txiaj ntsig zoo rau kev ua kom huv: Hais txog turbidity, qhov ncaj qha filtration effluent tseem nyob ruaj khov ntawm 0.01 NTU, ua tiav qhov kev tshem tawm ntawm 98%; Nyob rau hauv cov txheej txheem ua ke, cov lim dej ceramic ua ntej khaws cia 11% ntawm cov khoom raug tshem tawm, txo cov dej ntws tawm ntawm 1.35 NTU mus rau 1.20 NTU, thaum kawg effluent los ntawm ceramic membrane tseem nyob ntawm 0.01 NTU, ua tiav tag nrho cov kev tshem tawm tus nqi siab tshaj 99% ' thiab txo qhov hnyav. Hais txog yaj cov organic teeb meem, ib leeg ceramics tau txais kev tshem tawm tsuas yog 14.2% rau DOC thiab tsawg dua 10% rau UV₂₅₄. Cov lim dej ceramsite, tso siab rau biofilm degradation, ua tiav qhov kev tshem tawm ntawm 22.3% thiab 15% rau ob qhov ntsuas no, raws li, txhawb nqa tag nrho DOC tshem tawm tus nqi ntawm cov txheej txheem ua ke mus rau 29.1%, ze li ob npaug ntawm kev pom ncaj qha. Kev tshem tawm ammonia nitrogen yog qhov txiaj ntsig tseem ceeb. Hnub plaub tom qab daim nyias nyias txuas, cov txheej txheem nitrification matured, thiab ammonia nitrogen nyob rau hauv cov effluent los ntawm cov lim dej ceramsite tseem tsis tu ncua qis dua 0.01 mg / L, nrog rau kev tshem tawm mus txog 100%. Qhov nce hauv nitrate nitrogen sib piv qhov txo qis hauv ammonia nitrogen, lees paub tias nitrification yog cov txheej txheem tshem tawm tseem ceeb. Ceramic daim nyias nyias tsis muab ntxiv ammonia nitrogen tshem tawm, tswj qhov effluent concentration ntawm 0.01 mg / L, yog li them nyiaj rau qhov tsis txaus ntawm ib qho - cov txheej txheem membrane. Hais txog cov teeb meem fluorescent organic, thaum lub sijhawm ua haujlwm ruaj khov, cov lim dej ceramsite txo cov fluorescence siv ntawm cov roj ntsha muaj ntxhiab, humic acids, thiab fulvic acids, tsuas yog nce me ntsis vim qhov sib xyaw ntawm microbial metabolites. Ceramic membrane ntxiv cov seem loj loj-molecule organic teeb meem, qhia tshwj xeeb tshaj yog tshem tawm cov teebmeem ntawm microbial metabolites, ua kom huv si sib sib zog nqus.
III. Membrane Fouling yam ntxwv
Lub irreversible transmembrane siab sib txawv ntawm cov txheej txheem ua ke nce xwb los ntawm 4.5 kPa mus rau 8 kPa, ib tug tseem ceeb txo piv rau 26 kPa ntawm kev pom ncaj qha, nqaim qhov nce ntawm tag nrho cov membrane fouling tsis kam los ntawm 50%. Membrane deg contaminants feem ntau yog soluble microbial metabolites thiab cov proteins uas muaj ntxhiab, nrog qis -molecular- hnyav hydrophilic organic teeb meem accounting rau 86.3%. Cov kab mob nyob rau hauv daim nyias nyias pores ntxiv nrog rau fulvic acids, nrog rau qhov nruab nrab molecular hnyav ntawm 33.1 kDa, qhia meej cov yam ntxwv ntawm complex fouling.
IV. Xaus
Cov txheej txheem ua ke no, los ntawm kev sib koom ua ke ntawm biodegradation thiab lub cev sieving, tsis tsuas yog txhim kho kev tshem tawm ntawm ammonia nitrogen thiab organic teeb meem, tab sis kuj tseem cuam tshuam cov irreversible membrane fouling, muab txoj hauv kev tshiab rau kev siv cov ceramics hauv kev kho dej haus.