Muchidimbu Kugadzira mapepa emvura yakasviba kunonyanya kubva mukugadzirwa kwemapepa maviri ekugadzira mapurasitiki nekugadzira mapepa muindasitiri yekugadzira mapepa. Kugadzira mapurasitiki kunosanganisira kuparadzanisa mashinda kubva mumiti, kugadzira mapurasitiki, uye kuachenesa. Maitiro aya anogadzira mvura yakawanda yepurasitiki; kugadzira mapepa kunosanganisira kusanganisa, kugadzira, kudzvanya, uye kuomesa mapurasitiki kuti pagadzirwe mapepa. Maitiro aya anowanzo gadzira mvura yakasviba yepepa. Mvura yakasviba inogadzirwa mukugadzira mapurasitiki idoro dema nedoro tsvuku, uye kugadzira mapepa kunonyanya kugadzira mvura chena.
Zvinhu zvikuru 1. Mvura yakasviba yakawanda.2. Mvura yakasviba ine zvinhu zvakawanda zvakasungirirwa, kunyanya inki, faibha, filler nezvimwe zvinowedzerwa.3. SS, COD, BOD nezvimwe zvinosvibisa mumvura yakasviba zvakakwirira, huwandu hweCOD hwakakwira kupfuura BOD, uye ruvara rwakasviba.
Hurongwa hwekurapa uye mhinduro yedambudziko. 1. Nzira yekurapa Nzira yekurapa iripo parizvino inonyanya kushandisa nzira yekurapa isina anaerobic, aerobic, physical uye chemical coagulation uye sedimentation process combination treatment mode.
Maitiro ekurapa uye kuyerera: Mushure mekunge mvura yakasviba yapinda musystem yekurapa mvura yakasviba, inotanga yapfuura nemunzvimbo yemarara kuti ibvise marara makuru, inopinda mudziva regrid kuti ienzane, inopinda mutangi recoagulation, uye inogadzira coagulation reaction nekuwedzera polyaluminum chloride nepolyacrylamide. Mushure mekupinda muflotation, SS nechikamu cheBOD neCOD mumvura yakasviba zvinobviswa. Mvura yakasviba inoyerera inopinda mu anaerobic ne aerobic two-stage biochemical treatment kuti ibvise BOD neCOD yakawanda mumvura. Mushure me secondary sedimentation tank, COD ne chromaticity yemvura yakasviba hazvisvike pamitemo yenyika ye emission. Chemical coagulation inoshandiswa pakurapa kwakawedzerwa kuitira kuti mvura yakasviba ikwanise kusangana nemirairo ye emission kana kuti ikwanise kusangana nemirairo ye emission.
Matambudziko neMhinduro Dzakajairika 1) COD inodarika mwero. Mushure mekunge mvura yakasviba yagadziriswa ne anaerobic uye aerobic biochemical treatment, COD yetsvina haisviki padanho re emission. Mhinduro: Shandisa COD degradation agent inoshanda zvakanyanya SCOD pakurapa. Isa mumvura mune imwe ratio woita chiito kwemaminitsi makumi matatu.
2) Zvese chromaticity neCOD zvinodarika mwero Mushure mekunge mvura yakasviba yagadziriswa ne anaerobic uye aerobic biochemical therapy, COD yetsvina haisviki padanho re emission. Mhinduro: Wedzera high-efficiency flocculation decolorizer, sanganisa ne high-efficiency decolorizer, uye pakupedzisira shandisa polyacrylamide kuti flocculation uye precipitation, solid-liquid separation.
3) Ammonia yakawanda ine nitrogen Nitrogen yeammonia haigone kuzadzisa zvinodiwa pari zvino zvekubudisa tsvina. Mhinduro: Wedzera chinodzora kuburitsa tsvina yeammonia, kurunga kana kufefetera mhepo wosanganisa, woita zvemaminitsi matanhatu. Muchigayo chepepa, nitrogen yeammonia inobuda tsvina inenge 40ppm, uye mwero wekubudisa tsvina yeammonia nitrogen uri pasi pe15ppm, iyo isingakwanise kuzadzisa zvinodiwa zvekubudisa tsvina zvakanyorwa nemitemo yekudzivirira zvakatipoteredza.
Mhedziso Kurapa mvura yakasviba nepepa kunofanira kutarisa pakuvandudza mwero wemvura inoshandiswa pakudzokorora, kuderedza kushandiswa kwemvura uye kuburitswa kwemvura yakasviba, uye panguva imwe chete, kunofanira kutsvaga nzira dzakasiyana-siyana dzakavimbika, dzisingadhuri uye dzekurapa mvura yakasviba dzinogona kushandisa zvizere zviwanikwa zvinobatsira mumvura yakasviba. Semuenzaniso: nzira yekutenderera inogona kudzosa zvinhu zvakasimba mumvura chena, nekudzoreredza kusvika 95%, uye mvura yakacheneswa inogona kushandiswazve; nzira yekurapa mvura yakasviba inopiswa inogona kudzosa sodium hydroxide, sodium sulfide, sodium sulfate nedzimwe sodium salts dzakasanganiswa nezvinhu zvakasikwa mumvura nhema. Nzira yekurapa mvura yakasviba isina kusimba inogadzirisa pH kukosha kwemvura yakasviba; coagulation sedimentation kana flotation inogona kubvisa zvidimbu zvikuru zveSS mumvura yakasviba; nzira yekuchenesa makemikari inogona kuchinja ruvara; nzira yekurapa yebiological inogona kubvisa BOD neCOD, iyo inoshanda zvakanyanya kune kraft paper wastewater. Pamusoro pezvo, kunewo reverse osmosis, ultrafiltration, electrodialysis nedzimwe nzira dzekurapa mvura yakasviba dzinoshandiswa kumba nekune dzimwe nyika.
Nguva yekutumira: Ndira-17-2025