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Zvinokonzera uye Zviyero zveSludge Bulking muIndasitiri yeSewage Treatment
2024-08-20 15:43:28
Nekuenderera mberi kwekuvandudza uye kuvandudzwa kweiyo activated sludge process, iyo inoshanda manejimendi ruzivo yakagadziridzwa zvakanyanya. Nekudaro, mukushanda chaiko kweindasitiri yekuchenesa tsvina, sludge bulking inowanzoitika, ichikanganisa zvakanyanya kuwanda uye kunaka kwemvura yakagadziriswa. Naizvozvo, zvakakosha kuti unzwisise zvinokonzeresa sludge bulking uye inoenderana nhanho dzekuzvigadzirisa pachine nguva.
Sludge bulking ndechimwe chezvinhu zvisina kujairika zvinoitika panguva yekushanda kweiyo activated sludge system. Nekuda kwezvimwe zvikonzero, kuita kwesedimentation kwedope rakabatidzwa kunowedzera kuipa, zvichikonzera kuparadzaniswa kwemvura yedhaka-mvura, kusagadzikana kwakamiswa kuoma mutsvina, uye kuparadzwa kwemaitiro ekurapa. Ichi chiitiko chinowanzoenderana nekukura uye metabolism yema microorganisms. Kunyanya, inogona kupatsanurwa mumhando mbiri huru: filamentous sludge bulking uye isiri-filamentous sludge bulking. Filamentous sludge bulking inonyanya kukonzerwa nekukura kwakanyanya kwefilamentous bacteria, iyo inotungamira kune yakasununguka yakanyanyisa sludge chimiro, yakawedzera vhoriyamu, inoyangarara, uye kuomerwa kwesedimentation uye kupatsanura, zvichikanganisa kunaka kwemvura. Non-filamentous sludge bulking inokonzerwa nekuunganidza metabolites (high-viscosity polysaccharides). Ichi chepamusoro-viscosity chinhu chinovhara ma microorganisms ari activated sludge, kazhinji ari muchimiro chejeri, izvo zvinoita kuti sedimentation uye kuita kwekutarisa kwedhaka kuwedzere.
1. Zvikonzero zveSludge Bulking
Pane zvikonzero zvakawanda zvekuwedzera kwedhaka: inokanganiswa nezvinhu zvakaita sekuchinja kwemhando yemvura yezvikamu zveiyo influent, shanduko mu pH kukosha, shanduko yekushisa, shanduko yezvinovaka muviri, uye shanduko senge zvinosvibisa. Muchikamu chekutanga chekuwedzera, iyo sludge index (SVI) icharamba ichikwira, sludge chimiro chichave chakasununguka uye sludge yakawanda ichayangarara, kupatsanurwa kwemvura yematope kuchave kwakashata, uye mvura ine tsvina ichave yakasviba. . Panguva ino, kutarisisa kunofanirwa kubhadharwa uye kuferefetwa kunofanirwa kuitwa nekukurumidza kuti uwane chikonzero chekuwedzera.
Fig.1: Sludge bulking state
Fig.2: Normal state
2. Zviyero zvekugadzirisa Sludge Bulking
Matanho ekukurumidzira anosanganisira kusimbaradza kutariswa kwehunyoro uye kusvibiswa kwemhando, kugadzirisa maitiro ekushanda, kuwedzera makemikari maajenti, kuwedzera huwandu hwemadhaka anoburitswa, uye kudzikisa huwandu hwematope:
(1) Gara uchitarisa maitiro akasiyana-siyana mukugadzirisa tsvina: senge sludge index (SVI), oksijeni yakanyungudutswa, pH kukosha, nezvimwewo;
(2) Zvinoenderana nemhedzisiro yekutarisa, gadzirisa mamiriro ekushanda akadai seaeration uye nutrient kuwedzera kuti ugadzire nharaunda inoenderana nekukura kwema microorganisms.
(3) Wedzera huwandu hwakakodzera hwemakemikari, senge flocculants uye bactericides, kudzora kukura kwefilamentous bacteria kana kuvandudza sedimentation kuita kwedhaka;
(4) Nekuwedzera huwandu hwemadhaka akaburitswa, uye nekubvisa yakawandisa filamentous bacteria, inobatsira kudzoreredza yakajairika sedimentation kuita kwedhaka.
Kuburikidza nematanho ari pamusoro apa, dambudziko rekuputira sludge rinogona kugadziriswa zvinobudirira uye mhedzisiro uye kugona kwekutsvaira kwetsvina kunogona kuve nechokwadi.