Sebhizinesi rekudzora kusvibiswa, basa rakakosha remushonga wekuchenesa tsvina nderekuona kuti tsvina inosangana nezviyero. Nekudaro, nekuwedzera kuomarara kwemaitiro ekuburitsa uye hukasha hwevanoongorora kuchengetedza kwezvakatipoteredza, zvaunza kumanikidza kukuru kwekushanda kune gwenya rekuchenesa tsvina. Zviri kutowedzera kuoma kuburitsa mvura.
Zvinoenderana nekuona kwemunyori, chikonzero chakananga chekuomerwa kwekusvika pachiyero chekuyerera kwemvura ndechekuti kazhinji kune matatu akashata madenderedzwa mumiti yetsvina yenyika yangu.
Yekutanga idenderedzwa rakashata rekuita kwakaderera sludge (MLVSS/MLSS) uye yakakwira sludge concentration; chechipiri idenderedzwa rakashata rekukura kwehuwandu hwemakemikari ekubvisa phosphorus anoshandiswa, iyo yakawanda sludge kubuda; yechitatu ndiyo yenguva refu yetsvina kurapwa chirimwa Overload oparesheni, midziyo haigoni overhauled, kumhanya nezvirwere gore rose, zvichiita kuti utsinye denderedzwa kuderedzwa kwetsvina kurapwa kukwanisa.
#1
Denderedzwa rakashata rekuita kwakaderera sludge uye yakakwira sludge concentration
Muzvinafundo Wang Hongchen vakaita tsvakiridzo pazvirimwa 467 zvinotakura tsvina. Ngatitarisei ruzivo rwekuita kwedhaka uye kunyura kwemarara: Pakati peizvi 467 zvirimwa zvesuweji, 61% yemiti yekuchenesa tsvina ine MLVSS/MLSS isingasviki 0.5, ingangoita 30 % yemiti yekurapa ine MLVSS/MLSS pazasi 0.4.
Iyo sludge ye2/3 yemiti yekuchenesa tsvina inodarika 4000 mg/L, iyo sludge ye1/3 yemiti yekuchenesa tsvina inodarika 6000 mg/L, uye sludge yezvidyarwa makumi maviri ekuchenesa tsvina inodarika 10000 mg/L. .
Ndeipi mhedzisiro yemamiriro ari pamusoro (yakaderera sludge chiitiko, yakakwira sludge concentration)? Kunyangwe isu takaona zvakawanda zvehunyanzvi zvinyorwa zvinoongorora chokwadi, asi mumashoko akareruka, pane chimwe mhedzisiro, ndiko kuti, kubuda kwemvura kunodarika mwero.
Izvi zvinogona kutsanangurwa kubva pamativi maviri. Kune rimwe divi, mushure meiyo sludge concentration yakakwira, kuitira kudzivirira sludge deposition, zvinodikanwa kuwedzera aeration. Kuwedzera kuwanda kweaeration hakuzongowedzera simba rekushandisa, asiwo kuwedzera chikamu chebiological. Kuwedzera kweokisijeni yakanyungudika kuchabvuta iyo kabhoni inodiwa ku denitrification, iyo inozokanganisa zvakananga denitrification uye phosphorus kubviswa kweiyo biological system, zvichikonzera yakawandisa N uye P.
Nekune rimwe divi, iyo yakakwira sludge inoita kuti madhaka-mvura akwire, uye dhaka rinorasika nyore nekunyura kwesechipiri sedimentation tank, iyo inogona kuvharira iyo yepamusoro yekurapwa unit kana kukonzera effluent COD neSS kudarika iyo. standard.
Mushure mekutaura pamusoro pemigumisiro, ngatitaurei pamusoro pekuti nei zvirimwa zvakawanda zvetsvina zvine dambudziko rekushomeka kwetsvina uye yakakwira sludge concentration.
Muchokwadi, chikonzero cheiyo yakakwira sludge concentration ndeye yakaderera sludge chiitiko. Nekuti iyo sludge chiitiko chakaderera, kuitira kuti uvandudze maitiro ekurapa, iyo sludge concentration inofanirwa kuwedzera. Iyo yakaderera sludge basa inokonzerwa nekuti mvura ine simba ine yakawanda yejecha re slag, iyo inopinda mubiological treatment unit uye inounganidza zvishoma nezvishoma, iyo inokanganisa basa re microorganisms.
Kune yakawanda slag uye jecha mumvura inouya. Imwe ndeyekuti kubata kwegrille kwakashata zvakanyanya, uye imwe yacho ndeyekuti inopfuura 90% yezvigadziriso zvetsvina munyika yangu hazvina kuvaka matangi ekutanga sedimentation.
Vamwe vanhu vangabvunza, wadii kuvaka tangi yekutanga sedimentation? Izvi ndezve pombi network. Kune matambudziko akadai sekusabatana, kusanganiswa kwekubatanidza, uye kushaikwa kwekubatanidza mupombi network munyika yangu. Nekuda kweizvozvo, iyo inopesvedzera mhando yemvura yemiti yetsvina inowanzove nehunhu hutatu: yakakwira inorganic solid concentration (ISS), yakaderera COD, Low C/N ratio.
Iko kusanganiswa kwezvakaoma zvisingaite mumvura ine simba zvakakwirira, kureva kuti, jecha rinenge rakakwirira. Pakutanga, tangi yekutanga sedimentation inogona kuderedza zvimwe zvinhu zvisingaite, asi nekuda kwekuti COD yemvura ine simba yakadzikira, zvirimwa zvakawanda zvetsvina hazvingovaka tangi rekutanga sedimentation.
Mukuongorora kwekupedzisira, basa rakadzika sludge inhaka ye "zvinomera zvinorema uye mambure akareruka".
Isu tataura kuti yakakwira sludge uye yakaderera chiitiko zvinotungamira kune yakawandisa N uye P mutsvina. Panguva ino, matanho ekupindura emiti yakawanda yetsvina ndeyekuwedzera kabhoni masosi uye inorganic flocculants. Nekudaro, kuwedzera kweiyo yakawanda yekunze kabhoni masosi kuchaita kuti kuwedzere kuwedzera kwekushandiswa kwesimba, nepo kuwedzera kweiyo yakawanda ye flocculant inoburitsa huwandu hukuru hwemakemikari sludge, zvichikonzera kuwedzera kwe sludge concentration uye kuwedzera. kuderedzwa kwekuita kwedhaka, kugadzira denderedzwa rakashata.
#2
Denderedzwa rakashata umo iyo yakakura huwandu hwemakemikari ekubvisa phosphorus anoshandiswa, iyo yakakura kugadzirwa kwematope.
Kushandiswa kwemakemikari ekubvisa phosphorus kwakawedzera kugadzirwa kwematope ne20% kusvika 30%, kana kutopfuura.
Dambudziko remadhaka rave riri dambudziko guru rekuchenesa tsvina kwemakore akawanda, kunyanya nekuti hapana nzira yekubuda nayo, kana nzira yekubuda nayo haina kugadzikana. .
Izvi zvinotungamirira mukurebesa kwezera remadhaka, zvichikonzera chiitiko chekuchembera kwemadhaka, uye zvakatonyanya kuipa senge sludge bulking.
Madhaka akawedzerwa ane kusafamba zvakanaka. Nekurasikirwa kwemvura kubva kune yechipiri sedimentation tangi, iyo yepamusoro yekurapa unit yakavharwa, maitiro ekurapa anoderedzwa, uye huwandu hwemvura yekudzokera kumashure hunowedzera.
Kuwedzera kwehuwandu hwemvura yekudzokera shure kuchaita kuti pave nemigumisiro miviri, imwe ndeyokuderedza maitiro ekurapa kwechikamu chekare chebiochemical.
Mvura yakawanda yekudzokera shure inodzorerwa kune tangi yeaeration, iyo inoderedza chaiyo hydraulic retention nguva yegadziriro uye inoderedza maitiro ekurapa kwechipiri chekurapa;
Chechipiri ndechekuwedzera kuderedza kushandiswa kwekugadzirisa kwekudzika kwekugadzirisa unit.
Nemhaka yekuti mvura yakawanda yekugeza kumashure inofanira kudzorerwa kune yepamusoro-soro yekurapa filtration system, iyo filtration rate inowedzera uye iyo chaiyo filtration simba inoderedzwa.
Mhedzisiro yekurapa yese inova isina kunaka, izvo zvinogona kukonzera iyo yakazara phosphorus neCOD mutsvina kudarika mwero. Kuti udzivise kupfuudza chiyero, chirimwa chetsvina chichawedzera kushandiswa kwe phosphorus kubvisa vamiririri, izvo zvichawedzera kuwedzera kuwanda kwe sludge.
mudenderedzwa rakashata.
#3
Denderedzwa rakashata rekuremerwa kwenguva refu kwezvirimwa zvetsvina uye kuderedzwa kwesewage kurapwa kugona
Kugadziriswa kwetsvina kunoenderana kwete nevanhu chete, asiwo pamidziyo.
Midziyo yetsvina yave ichirwa pamberi pekuchenesa mvura kwenguva yakareba. Kana isingagadziriswi nguva dzose, matambudziko anoitika nokukurumidza kana kuti gare gare. Nekudaro, kazhinji, midziyo yetsvina haigone kugadziriswa, nekuti kana imwe midziyo yamira, kubuda kwemvura kunogona kudarika mwero. Pasi pehurongwa hwemafaindi ezuva nezuva, munhu wese haakwanise kuzvipa.
Pakati penzvimbo 467 dzekuchenesa tsvina dzemumaguta dzakaongororwa naProfessor Wang Hongchen, zvingangoita zvikamu zviviri muzvitatu zvadzo zvine hydraulic load rates inodarika 80%, chinenge chikamu chimwe muzvitatu chikuru kupfuura 120%, uye zvishanu zvekuchenesa tsvina zvinodarika 150%.
Kana iyo hydraulic load rate yakakura kupfuura 80%, kunze kwezvishoma-mahombe ekuchenesa tsvina, mafekitari ekuchenesa tsvina haakwanise kuvhara mvura kuti igadziriswe pachifungidziro chekuti tsvina inosvika pachiyero, uye hapana mvura yekuchengetedza. yeaerators uye yechipiri sedimentation tangi kusveta uye scrapers. Midziyo yakaderera inogona kungogadziriswa zvachose kana kutsiviwa kana ichinge yadonhedzwa.
Izvi zvinoreva kuti, inenge 2/3 yemiti yetsvina haigoni kugadzirisa midziyo panzvimbo yekuona kuti tsvina inosangana nechiyero.
Sekureva kwetsvakiridzo yaProfessor Wang Hongchen, hupenyu hwemaaera anowanzo makore 4-6, asi 1/4 yemiti yetsvina haina kuita kugadzirisa kwemhepo paaerator kwenguva yakareba semakore matanhatu. Mucherechedzo wedhaka, unoda kukuturwa uye kugadziriswa, hauwanzogadziriswi gore rose.
Midziyo iyi yanga ichishanda nehurwere kwenguva yakareba, uye huwandu hwekugadzirisa mvura huri kuramba huchiwedzera. Kuti utsungirire kudzvinyirirwa kwekubuda kwemvura, hapana nzira yekuimisa pakugadzirisa. Mudenderedzwa rakashata rakadaro, pachagara paine nzira yekuchenesa tsvina inotarisana nekudonha.
#4
nyora panoperera
Mushure mekuchengetedzwa kwezvakatipoteredza kwakagadzwa semutemo wenyika yangu wekutanga, minda yemvura, gasi, yakasimba, ivhu uye humwe hutongi hwekusvibiswa hwakagadziridzwa nekukurumidza, pakati peiyo munda wekuchenesa mvura inogona kunzi ndiye mutungamiri. Chiyero chisina kukwana, kushanda kwechirimwa chetsvina kwawira mudambudziko, uye dambudziko repombi network uye sludge rave zvikanganiso zviviri zvikuru zveindasitiri yekuchenesa tsvina yenyika.
Uye zvino, yave nguva kugadzirisa kukanganisa.
Nguva yekutumira: Feb-23-2022
