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1、第8卷第5期環(huán)境工程學(xué)報(bào)Vol．8，No．52014年5月ChineseJournalofEnvironmentalEngineeringMay2014混凝－膜組合工藝處理水產(chǎn)養(yǎng)殖廢水*陳強(qiáng)黎中寶陳明嶺(集美大學(xué)水產(chǎn)學(xué)院，福建省海洋漁業(yè)資源與生態(tài)環(huán)境重點(diǎn)實(shí)驗(yàn)室，廈門361021)摘要采用混凝-膜過濾組合工藝處理鰻鱺養(yǎng)殖廢水，實(shí)驗(yàn)研究了混凝對廢水的處理效果，確定了最佳的混凝劑和助凝劑，并對水體進(jìn)行2種膜工藝的處理。結(jié)果表明，聚合氯化鋁鐵(PAFC)是處理鰻鱺養(yǎng)殖廢水的理想混凝劑，最佳用量為30mg/L;加入助凝劑殼聚糖
2、，能有效提高混凝劑污染物去除效果，助凝劑最佳用量為0.3mg/L，pH值約為6.0;膜分離可以進(jìn)一步提高處理效果。在系統(tǒng)進(jìn)水化學(xué)需氧量質(zhì)量濃度為6.82～7.65mg/L，氨氮質(zhì)量濃度為0.78～0.92mg/L，亞硝酸鹽氮質(zhì)量濃度為0.35～0.39mg/L，硝酸鹽氮質(zhì)量濃度為2.49～3.07mg/L，活性磷酸鹽質(zhì)量濃度為0.74～0.89mg/L，水溫為20～28℃時(shí)，混凝-膜過濾組合方法對養(yǎng)殖廢水中5項(xiàng)指標(biāo)的去除率分別為:75.6%、61.2%、82.9%、37.5%和59.1%。但總體而言，混凝-膜組合工藝
3、在水產(chǎn)養(yǎng)殖廢水應(yīng)用中處理效果明顯，具有可行性和實(shí)用性。關(guān)鍵詞養(yǎng)殖廢水助凝劑混凝-膜組合工藝去除率中圖分類號X703.1文獻(xiàn)標(biāo)識碼A文章編號1673-9108(2014)05-1869-08Aquaculturalwastewatertreatmentbycoagulation-membranefiltrationcombinationprocessChenQiangLiZhongbaoChenMingling(FujianProvincialKeyLaboratoryforFisheryＲesourcesandEco
4、-Environment，F(xiàn)isheriesCollegeofJimeiUniversity，Xiamen361021，China)AbstractAcoagulation-membranefiltrationcombinationprocesswasdesignedtotreataquaculturalwastewaterofeel．Theeffectofcoagulationpretreatmentwasinvestigatedtoselectthesuperiorcoagulationandcoagulanta
5、id．Moreover，theselectivetestsformicrofiltrationandultrafiltrationweredonetotreatwastewater．Theresultsindicatedthatthepolymericaluminumferricchloride(PAFC)bringedaboutafairlyidealeffectwhenthedosageofPAFCwas30mg/L．Theefficiencyimprovementindicatedthatchitosancou
6、ldenhancethecoagula-tiontreatmentbyPAFCsignificantlyandmembranefiltrationcouldfurtherimproveremovalefficiencies．Whenthedosageofchitosanwas0.15mg/LandpHvaluewassetto6.0，theeffectofcoagulationwasbetter．When－－theefluentconcentrationsofCOD，NH3-N，NO2-N，NO3-NandPO4-P
7、were6.82～7.65mg/L，0.78～0.92mg/L，0.35～0.39mg/L，2.49～3.07mg/L，0.74～0.89mg/L，respectively，andthetemperaturewas20～－－28℃，theremovalefficienciesofCOD，NH3-N，NO2-N，NO3-NandPO4-Pwere75.6%，61.2%，82.9%，37.5%and59.1%，respectivelybycoagulation-membranefiltrationcombinedproc
8、ess．Itisthusconcludedthatthecombinedprocessisfeasibleandpracticalinaquaculturalwastewatertreatment．Keywordsaquaculturalwastewater;coagulantaid;coagulation-membranefiltration
