沸石法工业污水氨氮治理技术研究751866fbc8d376eeaeaa3136

(,300130),NH+4,,pH=7,12.96mg/g,PH;,;50mg/L,ThestudyontreatmentofNH32NwastewaterbyclinoptiloliteYuanJunshengLangYuqiZhangLindongWangYang(HebeiUniversityofTechnology,Tianjin300130)AbstractTheprocesswasconsideredforremovalammoniafromwastewaterinthepaper.BystudyingonthecapacityofNH+4onclinoptilolite,thefactorsofabsorptionandelutionprocessofzeolite,aseriesoftechnologicalprocessandtheoptimumparametersareobtained.ExperimentalresultsshowthattheaverageexchangecapacityofNH+4onclinoptiloliteisupto12.96mg/ganddecreasewiththeincreaseofpHvalue.Inaddition,highflowrateandlowtemperatureareadvantageoustoabsorptionprocess;lowflowrateandhightemperaturetendstofavortoelutionprocess.Asaresult,NH32Nconcentrationoftreatedwastewaterislessthan50mg/L,whichaccordwithnationalstandards.ThoseresultscanbewidelyusedinallkindsofNH32NwastewaterandaffordthetheoreticalfoundationfordevelopmentoftheNH32Nwastewatertreatmenttechnol2ogy.Keywordsclinoptilolite;NH32Nwastewater;treatment1,,,GB897821996,50mg/L,[1],,3.5!,NH+4,,,[2-4],,(),(Ca++),,,,,21,,(50mg/L),,()312Vol.3,No.12200212TechniquesandEquipmentforEnvironmentalPollutionControlDec.2002133.110g2040,20%Na2Cl100mL,,,100mL,015h,,,3.25mm300mm,Cl-pHNH+4,,NH+4,NH+4,pH,,pH3.3,20mm4000mm,1000mL,,1000mL,,,,,,,,,3.4:,,100mL,,100mL,,,,,,:,,,,,,44.1pHpH11pHpH(NH+4mg/g)512.18712.9698.34112.81,,NH+4:NH+4+OH-NH3H2OpH7,,NH+4,NH3H2O,,,pH574.24.2.122,0.0027m/s,,(50mg/L),,,:Na+Z-+NH+4=NH+4Z-+Na+[5],,,,NH+4,NH+4,1612:24.2.233,pH,,3,,,,34.34.3.14.3.1.144,,,,NH+4,,,4,50100,,5075,44.3.1.255,,,NH+4,,,564.3.2625mg/L30mg/L,pH14263,11012095.6%,,,,,5pH520010027m/s750.0008m/s,22(L)NH+4(mg/L)352463521.3NaCl1.501.563002,,35L,21.3mg/L,(50mg/L),91.3%1.5L,,NH+46300mg/L,25.6,,6,pH=5,12.96mg/g,pH;,;,246mg/L21.3mg/L,91.3%,(),,,95.6%,[1]..:,1992[2]..,2000,22(3):6972[3]BilsenBelerBaykal,DidenAkcaGuven.Performanceofclinoptilolitealoneandincombinationwithsandfiltersfortheremovalofammoniapeaksfromdomesticwastewater.Wat.Sci.Tech.,1997,35(7):4754[4]C.Ratanatamskul,C.Chiemchaisri,K.Yamamoto.Theuseofazeolite2ironcolumnforresidualammoniaandphos2phorusremovalintheeffluentfromamembraneprocessasanon2sitesall2scaledomesticwastewatertreatment.Wat.Sci.Tech.,1995,31(9):145152[5],..,2001,30(5):57(:)3612: