OverviewPapermaking mvura yetsvina inonyanya kuuya kubva kune maviri ekugadzira maitiro ekupuruzira uye kugadzira mapepa muindasitiri yekugadzira mapepa. Pulping (pulping) ndiko kupatsanura mafiibha kubva pachirimwa zvinhu, kugadzira pulp, wobva waichenesa. Iyi nzira ichaburitsa yakawanda yemapepa emarara emvura; papermaking ndiko kunyungudutsa, kuumba, kudzvanya, nekuomesa pulp kugadzira bepa. Iyi nzira inowanzoitawo kugadzira papermaking wastewater. Mvura huru yetsvina inogadzirwa mukupuruzira idoro dema nedoro dzvuku, uye kugadzira mapepa kunoburitsa mvura chena.
Zvinhu zvikuru 1. Kuwanda kwemvura yakasviba.2. Mvura yakasviba ine zvakawanda zvakaturikwa zvakasimba, kunyanya inki, fiber, filler uye additives.3. Iyo SS, COD, BOD uye zvimwe zvinosvibisa mumvura yetsvina zvakati wandei, COD yemukati yakakwira kupfuura BOD, uye ruvara rwakasviba.
Chirongwa chekurapa uye kugadzirisa dambudziko.1. Kurapa nzira Iyo yazvino nzira yekurapa inonyanya kushandisa anaerobic, aerobic, yemuviri uye makemikari coagulation uye sedimentation process musanganiswa kurapwa maitiro.
Kurapa uye kuyerera: Mushure mekunge mvura yetsvina yapinda mutsvina yekuchenesa hurongwa, inotanga kupfuura nepakati pemarara kuti ibvise marara makuru, inopinda mugedhi redziva kuti ienzane, inopinda mucoagulation tank, uye inoburitsa coagulation reaction nekuwedzera polyaluminium chloride uye polyacrylamide. Mushure mekupinda muflotation, SS uye chikamu cheBOD neCOD mumvura yakasvibiswa inobviswa. Iyo inoyerera inoyerera inopinda mune anaerobic uye aerobic maviri-nhanho biochemical kurapwa kubvisa yakawanda yeBOD neCOD mumvura. Mushure meiyo yechipiri sedimentation tank, iyo COD uye chromaticity yemvura yakaraswa hazvisangane nemitemo yenyika. Kemikari coagulation inoshandiswa pakuwedzera kurapwa kuitira kuti mvura yetsvina isangane nemiyero yekuburitsa kana kuti isangane nemiyero yekuburitsa.
Matambudziko Akajairwa uye Mhinduro 1) COD inodarika mwero. Mushure mokunge mvura yetsvina yabatwa neanaerobic uye aerobic biochemical treatment, COD yemvura yakasviba haisviki mitemo yekubudisa.Solution: Shandisa COD degradation agent agent SCOD yekurapa. Wedzera iyo kumvura mune imwe chikamu uye ita kwemaminitsi makumi matatu.
2) Zvose chromaticity neCOD zvinodarika chiyero Mushure mokunge mvura yakasviba yabatwa neanaerobic uye aerobic biochemical treatment, COD yemvura inoyerera haisviki mitemo yekubuda. Solution: Wedzera yakakwira-inoshanda flocculation decolorizer, sanganisa nepamusoro-inoshanda decolorizer, uye pakupedzisira shandisa polyacrylamide yekuyerera uye kunaya, kupatsanurwa kwakasimba-mvura.
3) Yakawandisa ammonia nitrogen Iyo yakasvibiswa ammonia nitrogen haigone kuzadzisa zvinodiwa zvino kuburitsa. Kugadzirisa: Wedzera ammonia nitrogen remover, kurunga kana aerate uye sanganisa, uye ita kwemaminitsi matanhatu. Muchigayo chepepa, mvura inoyerera yeammonia nitrogen ingangoita 40ppm, uye mwero weammonia nitrogen emission wepanzvimbo uri pazasi 15ppm, usingakwanise kuzadzisa zvinodiwa zvinoburitswa nemirairo yekuchengetedzwa kwezvakatipoteredza.
Mhedziso Kugadzira marara emvura kunofanirwa kutarisisa kuvandudza mwero wemvura inodzokororwa, kuderedza kushandiswa kwemvura uye kubuda kwemvura yakasviba, uye panguva imwe chete, inofanirwa kuongorora nzira dzakasiyana-siyana dzakavimbika, dzehupfumi uye dzetsvina dzinogona kushandisa zvizere zviwanikwa zvinobatsira mumvura yetsvina. Semuenzaniso: flotation nzira inogona kudzoreredza fibrous solids mumvura chena, ine yekudzoreredza inosvika 95%, uye yakajekeswa mvura inogona kushandiswa zvakare; kupisa tsvina yemvura yekurapa nzira inogona kudzoreredza sodium hydroxide, sodium sulfide, sodium sulfate uye mamwe sodium munyu wakasanganiswa ne organic zvinhu mumvura nhema. Neutralization wastewater treatment nzira inogadzirisa pH kukosha kwemvura yakasviba; coagulation sedimentation kana flotation inogona kubvisa zvidimbu zvakakura zveSS mumvura yakasviba; makemikari kunaya nzira inogona decolorize; biological treatment nzira inogona kubvisa BOD neCOD, iyo inonyanya kushanda kune kraft paper wastewater. Uye zvakare, kune zvakare reverse osmosis, ultrafiltration, electrodialysis uye mamwe mapepa ekugadzira tsvina nzira dzekurapa dzinoshandiswa kumba nekune dzimwe nyika.
Nguva yekutumira: Jan-17-2025