Polyacrylamide(PAM) yakakwira molecular huremu polymer inoshandiswa zvakanyanya mukurapa kwemvura maitiro munzvimbo dzakasiyana siyana. Iyo ine akasiyana mamorekuru huremu, ionicities, uye zvimiro kuti zvienderane neakasiyana mashandisiro mamiriro uye anogona kutogadziridzwa kune akakosha mamiriro. Kuburikidza nemagetsi neutralization uye polymer adsorption uye bhiriji, PAM inogona kusimudzira kukurumidza agglomeration uye sedimentation yezvimedu zvakamiswa, kuvandudza kunaka kwemvura. Ichi chinyorwa chichaongorora mashandisirwo chaiwo uye kukanganisa kwePAM mukurapwa kwemvura munzvimbo dzakasiyana siyana.
Mukurapa kwesuweji yemumba, PAM inonyanya kushandiswa flocculation sedimentation uye sludge dewatering. Nekudzikamisa zvivakwa zvemagetsi uye kushandisa adsorbing bridging mhedzisiro, PAM inogona kumhanyisa kuunganidzwa kwezvakarembera zvakamira mumvura kuita flocs dzezvimedu zvakakura. Aya flocs ari nyore kugadzirisa uye kusefa, nekudaro zvinobudirira kubvisa tsvina mumvura uye kuzadzisa chinangwa chekuchenesa mvura. Kushandiswa kwePAM kunogona kuvandudza kushandiswa kwemvura yetsvina uye kuderedza mari yekurapa.
Mundima yekugadzira mapepa, PAM inonyanya kushandiswa sechibatsiro chekuchengetedza, sefa aid, dispersant, etc. Nekuwedzera PAM, chiyero chekuchengetedza mafirita uye fiber yakanaka mupepa inogona kuvandudzwa, kuderedza kushandiswa kwezvinhu zvakasvibirira, uye kuwedzera. iyo filterability uye kupera mvura mumuviri kuita kwe pulp. Pamusoro pezvo, PAM inogona kushanda senge isiri-silicon polymer stabilizer mukuita bleaching, ichivandudza kuchena uye kupenya kwebepa.
Muchinwiwa chedoro chirimwa chemvura yetsvina,PAMinonyanya kushandiswa mune sludge dehydration process. Kune maitiro ekugadzirwa kwedoro ane akasiyana mbichana uye marara ekurapa maitiro, zvakakosha kusarudza cationic polyacrylamide ine ionicity yakakodzera uye huremu hwemamorekuru. Kuedza kusarudzwa kuburikidza nekuedza beaker kuyedza ndeimwe yenzira dzinowanzo shandiswa.
Mvura yetsvina yechikafu, ine yakakwira organic zvinhu uye yakaturikwa yakaoma zvirimo, inoda nzira dzakakodzera dzekurapa. Maitiro echinyakare anosanganisira sedimentation yemuviri uye biochemical fermentation. Nekudaro, mumashandisirwo anoshanda, mapolymer flocculants anowanzodikanwa kune sludge dehydration uye mamwe mabasa ekurapa. Mazhinji emaflocculants anoshandiswa mune iyi maitiro cationic polyacrylamide akatevedzana zvigadzirwa. Kusarudza akakodzera polyacrylamide chigadzirwa kunoda kufungisisa kukanganisa kwemamiriro ekunze (tembiricha) pamusoro flocculant kusarudzwa, kusarudza zvakakodzera molecular uremu uye mutero ukoshi kunobva floc saizi inodiwa nokurapa muitiro, uye zvimwe zvinhu. Pamusoro pezvo, kutariswa kunofanirwa kupihwa kune nyaya dzakadai semaitiro uye zvinodiwa zvemidziyo uye kushandiswa kwemaflocculants.
Mumagetsi uye electroplating tsvina yemvura, PAM inonyanya kushandiswa seFlocculantuye precipitant. Nekudzikamisa zvivakwa zvemagetsi uye nekushandisa adsorbing bridging mhedzisiro, PAM inogona kukurumidza kuunganidza uye kugadzirisa inorema simbi maion mumvura yetsvina. Mukuita uku, zvinowanzodiwa kuwedzera sulfuric acid kumvura yakasviba kugadzirisa pH kukosha kusvika 2-3 uye wobva wawedzera inoderedza mumiriri. Mutangi rinotevera rekuita, shandisa NaOH kana Ca(OH)2 kugadzirisa pH kukosha kusvika 7-8 kugadzira Cr(OH)3 precipitates. Wobva wawedzera coagulant kudonha uye kubvisa Cr(OH)3. Kuburikidza nemaitiro aya ekurapa, PAM inobatsira kuvandudza kushanda kwemagetsi uye electroplating tsvina yemvura uye kuderedza kukuvadza kweiyo heavy metal ions kunharaunda.
Nguva yekutumira: Jun-04-2024