Kushandiswa kweORP mukurapwa kwetsvina

Chii chinonzi ORP mukuchenesa tsvina?
ORP inomirira redox kugona mukuchenesa tsvina. ORP inoshandiswa kuratidza iyo macro redox zvimiro zvezvinhu zvese mune aqueous mhinduro. Iyo yakakwirira iyo redox inogoneka, kusimba kweiyo oxidizing midziyo, uye kuderera kweiyo redox, ndiko kusimba kwekudzikisa pfuma. Kune muviri wemvura, pane kazhinji kacho akawanda redox mikana, kugadzira yakaoma redox system. Uye simba rayo redox ndiyo yakazara mhedzisiro yekuita redox pakati pezvakawanda oxidizing zvinhu uye kuderedza zvinhu.
Kunyangwe ORP isinga kwanise kushandiswa sechiratidzo chekusangana kwechimwe chinhu oxidizing uye kuderedza chinhu, inobatsira kunzwisisa electrochemical maitiro emuviri wemvura uye kuongorora zvimiro zvemuviri wemvura. Icho chiratidzo chakakwana.
Kushandiswa kweORP mukurapwa kwetsvina Kune akawanda akasiyana maion uye okisijeni yakanyungudika muhurongwa hwetsvina, ndiko kuti, maitiro akawanda eredox. Kuburikidza neORP yekuona chiridzwa, iyo redox inogoneka mumvura yetsvina inogona kuonekwa munguva pfupi, iyo inogona kupfupisa zvakanyanya nzira yekuona uye nguva uye kugadzirisa kushanda zvakanaka.
Iyo redox inogona kudiwa nema microorganisms yakasiyana pane imwe neimwe nhanho yekuchenesa tsvina. Kazhinji, aerobic microorganisms inogona kukura pamusoro pe +100mV, uye iyo optimum ndeye +300～+400mV; facultative anaerobic microorganisms inoita aerobic respiration pamusoro pe +100mV uye anaerobic respiration pazasi +100mV; sungira anaerobic bacteria inoda -200～-250mV, pakati peiyo inosungirira anaerobic methanogens inoda -300～-400mV, uye optimum i -330mV.
Yakajairika redox nharaunda mune aerobic activated sludge system iri pakati pe +200 ~ + 600mV.
Senzira yekudzora mu aerobic biological treatment, anoxic biological treatment uye anaerobic biological treatment, nekutarisa nekugadzirisa ORP yetsvina, vashandi vanogona kudzora zvisirizvo kuitika kwebiological reaction. Nekuchinja mamiriro ezvakatipoteredza ekuita basa, senge:
● Kuwedzera vhoriyamu yeaeration kuti uwedzere kunyungudika kweokisijeni
● Kuwedzera oxidizing zvinhu uye mamwe matanho ekuwedzera redox inogona
● Kuderedza vhoriyamu yeaeration kuderedza kunyungudika kweokisijeni
● Kuwedzera carbon sources uye kuderedza zvinhu kuti kuderedze redox inogona, nokudaro kukurudzira kana kudzivirira maitiro.
Naizvozvo, mamaneja anoshandisa ORP seyekudzora parameter mune aerobic biological kurapwa, anoxic biological kurapwa uye anaerobic biological kurapwa kuti vawane zvirinani kurapwa.
Aerobic biological treatment:
ORP ine hukama hwakanaka nekubvisa COD uye nitrification. Nekudzora huwandu hwe aerobic aeration kuburikidza neORP, nguva isina kukwana kana yakawandisa aeration inogona kudzivirirwa kuve nechokwadi chemhando yemvura yemvura yakacheneswa.
Anoxic biological treatment: ORP uye nitrogen concentration mu denitrification state ine kumwe kuwirirana muanoxic biological treatment process, iyo inogona kushandiswa sechiyereso chekutonga kuti dhirigisheni yapera here. Chiitiko chakakodzera chinoratidza kuti mukuita kwe denitrification, kana derivative yeORP kusvika kunguva iri pasi pe -5, maitiro anowedzera. Mvura ine nitrate nitrogen, iyo inogona kudzivirira kugadzirwa kwezvinhu zvakasiyana-siyana zvine chepfu uye zvinokuvadza, zvakadai sehydrogen sulfide.
Anaerobic biological treatment: Munguva yeanaerobic reaction, kana zvinhu zvinoderedza zvinogadzirwa, kukosha kweORP kunoderera; Ukuwo, kana kuderedza zvinhu kuchiderera, kukosha kweORP kuchawedzera uye kunenge kugadzikana mune imwe nguva yenguva.
Muchidimbu, kune aerobic biological kurapwa mumapombi ekuchenesa tsvina, ORP ine hukama hwakanaka ne biodegradation yeCOD neBOD, uye ORP ine hukama hwakanaka ne nitrification reaction.
Kune anoxic biological treatment, pane kumwe kuwirirana pakati peORP nenitrate nitrogen concentration mu denitrification state panguva yeanoxic biological treatment, iyo inogona kushandiswa sechiyereso chekutonga kuti dhinitrification process yapera. Dzora maitiro ekurapa echikamu chekubvisa phosphorus uye uvandudze phosphorus yekubvisa maitiro. Biological phosphorus kubviswa uye phosphorus kubviswa kunosanganisira matanho maviri:
Chekutanga, muchikamu chekuburitsa phosphorus pasi pemamiriro eanaerobic, mabhakitiriya ekuvirisa anoburitsa mafuta acids pasi pemamiriro eORP pa -100 kusvika -225mV. Fatty acids inobatwa ne polyphosphate mabhakitiriya uye phosphorus inobudiswa mumvura yemvura panguva imwe chete.
Chechipiri, mudziva reaerobic, mabhakitiriya epolyphosphate anotanga kushatisa mafuta acids akabatwa muchikamu chekare uye anoshandura ATP kuita ADP kuti awane simba. Kuchengetwa kwesimba iri kunoda kushambadza kwephosphorus yakawandisa kubva mumvura. Kuita kwe adsorbing phosphorus kunoda kuti ORP mudziva reaerobic ive pakati pe +25 ne +250mV kuti biological phosphorus ibviswe.
Naizvozvo, vashandi vanogona kudzora maitiro ekurapa kwechikamu chekubvisa phosphorus kuburikidza neORP kuvandudza phosphorus yekubvisa maitiro.
Kana vashandi vasingade denitrification kana nitrite kuunganidza kuti zviitike mukuita nitrification, kukosha kweORP kunofanirwa kuchengetedzwa pamusoro +50mV. Saizvozvo, mamaneja anodzivirira chizvarwa chekunhuhwirira (H2S) musewer system. Mamaneja anofanirwa kuchengetedza kukosha kweORP kunodarika -50mV mupombi kudzivirira kuumbwa uye kuita kwemasulfides.
Gadzirisa iyo aeration nguva uye aeration kusimba kwemaitiro kuchengetedza simba uye kuderedza kushandiswa. Pamusoro pezvo, vashandi vanogona zvakare kushandisa kuwirirana kwakakosha pakati peORP uye yakanyungudika okisijeni mumvura kugadzirisa nguva yeaeration uye kusimba kwemhepo yemaitiro kuburikidza neORP, kuitira kuti vawane kuchengetedza uye kuderedzwa kwekushandisa uchisangana nebiological reaction mamiriro.
Kuburikidza neORP yekuona chiridzwa, vashandi vanogona kukurumidza kubata nzira yekunatswa kwetsvina uye ruzivo rwechimiro chekusvibiswa kwemvura zvichienderana neruzivo rwechokwadi-nguva yemhinduro, nekudaro vachiona manejimendi akakwenenzverwa ezvibatanidza zvekuchenesa tsvina uye kutonga kwakanaka kwemhando yenzvimbo yemvura.
Mukurapa kwemvura yetsvina, maitiro mazhinji eredox anoitika, uye zvinhu zvinokanganisa ORP mune yega yega reactor zvakasiyana. Naizvozvo, mukugadziriswa kwesuweji, vashandi vanofanirwawo kuenderera mberi nekudzidza kuwirirana pakati peokisijeni yakanyungudika, pH, tembiricha, salinity uye zvimwe zvinhu zviri mumvura uye ORP zvinoenderana nemamiriro chaiwo echirimwa chesuweji, uye kumisikidza ORP yekudzora ma paramita akakodzera kune akasiyana mitumbi yemvura. .