Kudzidza pamusoro pematanho ekuomesa marara
Kutora dewatering sludgeweQingpu District Municipal Sewage Treatment Kudyara seyakagadzirwa, bepa rino rinoongorora mutsauko wehunhu hwemadhaka isati yaoma uye mushure mekuomeswa kubva kuzvinhu zvekuongorora maindasitiri, micromorphology, basic composition uye calorific value, uye inopa data rekutanga rekuzadzikiswa kwekuomesa uye kupisa kwedhaka.
Sludge ndeye-chigadzirwa che nzira yekuchenesa tsvina, ine mvura yakawanda (kazhinji inenge 98%), vhoriyamu yakakura, yakaoma kubvisa maitiro, uye sludge kuumbwa kwakaoma, ine nhamba yakawanda yezvinhu zvehupenyu, simbi inorema, munyu, zvakaoma kusvibisa zvinhu uye pathogenic microorganisms, mazai eparasitic uye zvichingodaro. Nekudzika kwekugadziriswa kwetsvina, kurapwa kwakanaka uye kuraswa kwetsvina kuri kuwedzera kukosha, uye dhaka risina kucheneswa injodzi huru kune zvakatipoteredza.
Zvinoenderana nedata reE20 Research Institute, inopfuura hafu yematope anogadzirwa netsvina inogadziriswa uye inoraswa nehutsanana, uye inopfuura 18% yematope inorasika. Inopfuura 50% yemvura ye80% yemvura yakasvibiswa inoraswa nenzira iri nyore yekurasira. Iyi nzira yekurasa haina kungoita zvakakomba kusvibiswa kwechipiri kwezvakatipoteredza, asi zvakare inotora nzvimbo yakakura, uye hapazove nenzvimbo yekuviga mukufamba kwenguva. Chikumbiro che Sludge Treatment nekurasa zvinodiwa mu "Mvura Gumi" uye "13th Five-Year Plan" yakakurudzira kukura kwesludge kurapwa uye kuraswa musika pasi pemamiriro ehurongwa hwakanaka, uye yakabatana kurapa tekinoroji uye michina yakagadzirawo nekukurumidza.
"Iyo yakanakisa inogoneka tekinoroji nhungamiro yekurapa uye kuraswa kweSLUDGE muchirimwa chekuchenesa tsvina" inotenda kuti kuomeswa kwemarara uye kupisa ndiro gwara rinotsigirwa nenyika yedu mune ramangwana. Kuti uone kuomeswa kwemarara uye kupisa nekushanda kwakanyanya uye kuderera kwesimba rekushandisa, zvinodikanwa kunyatso ongorora maitiro emarara pamberi uye mushure mekuoma kubva kumakona akawanda.
Mupepa rino, maitiro emvura yakasvibiswa asati aoma uye mushure mekuoma akadzidzwa kubva kune zvikamu zvekuongorora kwekutanga, micromorphology, basic composition uye calorific value, iyo yakapa data inokosha yekuzadzikiswa kwekuoma uye kupisa kwemarara.
Midziyo yekuedza
Manipala dewatering sludge yakaomeswa nekushandisa yakaomeswa firimu yakaoma, uye chimiro dhayagiramu yeatete layer dryer inoratidzwa muFigure. Muchina wakatetepa wekuomesa firimu unoumbwa negomba, rotor uye mudziyo wekutyaira. Iyo rotor inowaridza dhehydrated sludge kuita yakatetepa pamadziro emukati ejaketi rehombodo, uye inoomesa sludge neyakakura tembiricha chiutsi kana kupisa conduction mafuta mubhachi.
Basic ongororo uye kuenzanisa pamberi uye pashure sludge kuomesa
Iyo yakanyanyisa kupisa ye 160 ℃ uye 0.6Mpa yakapfuudzwa muomese firimu kuti iome sludge yakabviswa nemvura ine hunyoro hunosvika 80% kune hunyoro huri pasi pe30%. Iyo tsvina isati yaoma uye mushure mekuomeswa yakatorwa uye yakaongororwa kakawanda. Mhedzisiro yakaratidza kuti kusvibiswa kwemukati kwesludge kwakaderedzwa mushure mekuoma, uye kusvibiswa kwemukati wekuoma kwakaderedzwa ne 4.53% ~ 8.66%. Panguva imwecheteyo, madota ehuputi akawedzera, uye high calorvalue yekuomeswa kwenheyo yakaderera ne 0.335 ~ 1.15MJ / kg. Izvi zvinonyanya kuitika nekuti mukupisa kwekupisa, organic compounds mumatope uye zvimwe zvimedu zvakatsetseka zvinova gasi rekuomesa muswe pamwe chete nemhute yemvura inoomesa uye inopinda muchikamu chinotevera chegasi remuswe.
Microstructure kuenzanisa sludge pamberi uye mushure mekuoma
Iyi inotevera nhamba inoratidza microstructure ye sludge isati yaoma uye mushure mekuoma. Sezvinogona kuonekwa kubva pamufananidzo, sludge chimiro chisati chaomeswa chakasununguka, uye nhamba huru ye extracellular polymers inoputirwa uye inounganidzwa kunze kwe colloid, ichiita chimiro chakajeka chekubatanidza. Nenzira iyi, iyo yakasungwa mvura, interstitial mvura uye intracellular mvura mune sludge yakaputirwa mu sludge floc, kuitira kuti zvive zvakaoma kuwedzera kupera mvura kuburikidza nezviito zvemuviri nemakemikari. Kuenzaniswa nematope mushure mekuoma, sludge isati yaoma ine yakakwirira porosity, yakakura chaiyo nzvimbo, yakasimba compressibility, uye sludge floc inogona kuparadzwa nekuisa yakaderera mechanical simba kana kupa kupisa. Nekubuda kwemvura mune sludge, iyo sludge floc chimiro inodonha zvishoma nezvishoma, ichigadzira aggregate dhizaini neyakaomeswa pamusoro pechimiro uye zvishoma nezvishoma inoderera voids mumufananidzo uri kurudyi. Nekudaro, kunyatsoita evaporation kwemvura kunodzikirawo nekudzikira kwesludge void ratio.
Kuumbwa kwekuenzanisa kwesludge pamberi uye mushure mekuoma
Iyo nhamba inoratidza mhedzisiro ye infrared spectral scanning isati yatanga uye mushure mekuoma kwedhaka. The mumiririri anoshanda mapoka sludge yakaoma boka anonyanya vakasununguka H2O, -OH, -CH2, -CH3, anonhuwirira mhete, C = C, CO, halogenated hydrocarbon, etc. Zvinoratidza kuti Organic zvinhu zviri sludge yakakwirira, uye organic nyaya mhando anogona kuva mapuroteni, lipid, starch uye cellulose. Zvidzidzo zvakaratidza kuti mapuroteni emukati medhaka organic zvinhu anodarika 60%, lipid inenge 20%, starch uye cellulose inenge 15%, kuparara kwezvinhu izvi zvehupenyu kunobudisa NH3, H2S uye VOCs nemamwe magasi anonhuwa.
EPS i polymer yakakwirira inoumbwa neprotein, polysaccharide uye shoma shoma ye lipids, nucleic acid uye humus. Kuonekwa kweEPS maitiro emakemikari anoratidza kuvapo kwehuwandu hwakawanda hweEPS mumatope. Seyakakosha organic chikamu chesludge, EPS yemukati inosarudza infrared absorption intest yesludge maitiro anoshanda mapoka. Nokuenzanisa iyo infrared spectra yesludge isati yaoma uye mushure mekuoma uye kusabvisa kupindira kusinganzwisisike kwetsvina mumatope panguva yekuongorora, zvinogona kuonekwa kuti infrared absorption intensity yesludge isati yaoma yakanyanya kukwirira kupfuura iyo yesludge mushure mekuoma. Zvichienzaniswa nedhaka risati raoma, spectra yematope mushure mekuoma yakaratidza kuti mapendekete akakwirira pa1654 uye 1543cm-1 (C = C), 2924cm-1 (CH) uye 1076cm-1 (CO) aiva maduku, airatidza kuparara kweprotein-like ludge zvinhu panguva yekuomesa. Izvi zvinotsanangurawo kudzikira kweiyo organic matter yezvinhu uye zvinhu zvinoshanduka mushure mekuoma kwedhaka.
Kuenzanisa kwehunyoro hwemukati, organic zvinhu uye calorific kukosha kwesludge pamberi uye mushure mekuoma
Iyo organic matter musludge ndiyo inonyanya kupa iyo calorvalue yesludge, nepo hunyoro hwehutu hunewo simba guru pane calorvalue. Iyo yakanyanya kunyorova yedhaka ine yakaderera yakaderera calorific kukosha, izvo zvinozokanganisa kupiswa kwedhaka. Uyezve, iyo sisitimu yekushandisa simba mune sludge drying process inonyanya kushandiswa kufambisa mvura mumatope.
Iyo organic matter yemukati medhaka mushure mekuoma yakadzikira zvishoma, uye inowirirana yakakwira calorification kukosha kweiyo yakaoma base zvakare yakadzikira zvishoma. Iko kuwirirana pakati pe sludge mwando wehuwandu uye calorie-value, uye kuwirirana pakati pe sludge organic matter uye calorie-value zvakadzidzwa zvakatevedzana, uye coefficient yekubatanidza pakati pezvakasiyana-siyana yakawanikwa nekugadzirisa mutsara, uye kuongororwa kwekugadzirisa kwakaitwa.
Pane kusawirirana kwakashata pakati pehunyoro hwemvura yakaoma uye yakaderera calorific kukosha, iyo inoderera nekuwedzera kwehunyoro. Nekudaro, iyo corelation coefficient pakati peyakaoma sludge mwando wehuwandu uye yakaderera calorage kukosha i0.882, uye P kukosha kweF bvunzo ndeye 0.061 pasi pe95% kuvimba. Sezvo iyo F-yedzo P kukosha yakakura kupfuura 0.05, hunyoro hwemvura yakaoma sludge hairatidze yakakosha mutsara kuwirirana neiyo yakaderera calorage kukosha.
Iko coefficient yekubatanidza pakati pehupenyu hwehupenyu huri musludge yakasvibirira uye yakakwirira calorie-value yehwaro yakaoma yaiva 0.997, uye P kukosha kweF test yaiva 0.0033 pasi pekuvimba kwe95%. F bvunzo P kukosha ishoma pane 0.05, saka iyo organic zvinhu zvemukati sludge ine yakakosha kuwirirana neyakaoma base yakakwira calorie-value.
Iyo organic matter yemukati yakaoma sludge yaive yakabatana neiyo high calorific kukosha kweiyo yakaoma base, uye yakakwirira calorific kukosha kweiyo yakaoma base yakawedzera nekuwedzera kweiyo organic zvinhu. Uyezve, iyo coefficient yekubatanidza pakati peiyo organic matter yemukati yakaoma sludge uye yakakura calorage kukosha kweiyo yakaoma substrate yaive 0.973, uye P kukosha kweF bvunzo yaive 0.014 pasi pekuvimba kwe95%. Sezvo F-test p-value isingasviki 0.05, zvinogona kuonekwa kuti pane kuwirirana kwakakosha pakati pehupenyu hwehupenyu hwehutu hwakaoma uye huwandu hwekoriori-kukosha kwegasi rakaoma.
Kubva pane ongororo iri pamusoro, zvinogona kuonekwa kuti calorage value yesludge yakanyatsoenderana nehunyoro hwemukati uye organic matter content, uye pane yakakosha hukama hwakanaka pakati peiyo organic matter yemukati yedhaka uye kukosha kwekoriori yedhaka rakaoma base. Izvi zvinoratidza zvakare kuti kana huwandu hukuru hwezvinowedzera zveinorganic zvakashandiswa kugadzirisa uye kupera simba kwesludge kubva kune yetsvina yekuchenesa chirimwa, kunyangwe ichigona kuita yakakosha kupera simba kwemvura, kuiswa kwenhamba yakawanda yezvinhu inorganic hakungogadzirisi sisitimu yekuomeswa kwemarara, asiwo zvakanyanya kuderedza iyo organic zvinhu zvirimo mumatope, izvo zvinokonzeresa kuoma kwemvura. kupisa.
Mhedziso
Mubepa rino, hunhu hwetsvina yakapera mvura isati yaoma uye mushure mekuomeswa yakaongororwa nekushandisa dhaka rakapera kubva kuQingpu District yeShanghai seyakagadzirwa.
(1) Nekufambira mberi kwekuomeswa, chimiro chepamusoro chesludge chinovharika zvishoma nezvishoma, gaka rinoderedzwa zvishoma nezvishoma, uye kuomesa kwemvura kunoderedzwa zvishoma nezvishoma.
(2) Kuomeswa kwemarara kuchaitika zvishoma zvekuora kwehupenyu, kuitira kuti zvinyorwa zvehupenyu hwehupenyu uye hutsika hwemadhaka mushure mekuoma kunoderedzwa zvishoma.
(3) Iyo yakaderera calorage kukosha kwesludge haina kuenderana nehunyoro hwayo, asi hapana chiri pachena mutsara hukama; Paive nechakanaka mutsara kuwirirana pakati peyakakwira calorage kukosha kwesludge uye organic matter yemukati. Naizvozvo, zvinodikanwa kudzikisa hunyoro hwemadhaka uye kuderedza kurasikirwa kweiyo organic zvinhu zviri mumatope kuti ive nechokwadi chekuti calorvalue yedhaka.