I. Tag Nrho Phosphorus (TP) yog dab tsi?
Tag nrho phosphorus: Cov sum ntawm tag nrho cov phosphorus{0}} muaj cov khoom nyob rau hauv cov dej khib nyiab.
Tag nrho phosphorus yog tag nrho cov nyiaj yaj, tshem tawm, organic, thiab inorganic phosphorus hauv dej, qhia li mg / L.
Muaj plaub hom phosphorus hauv dej:
1. Orthophosphate: Feem ntau thiab yooj yim tshem tawm;
2. Polyphosphate: Feem ntau pom muaj nyob rau hauv cov tshuaj niaj hnub thiab electroplating; yuav tsum tau hydrolysis ua ntej;
3. Organic phosphorus: Feem ntau pom muaj nyob rau hauv cov zaub mov, tshuaj, thiab tshuaj tua kab; nyuaj rau degrade;
4. Particle phosphorus: Phosphorus adhering rau sediment, sludge, thiab suspended solids.
Qhov teeb meem loj tshaj plaws ntawm phosphorus: Ua rau eutrophication, xiav -ntsuab algae blooms, thiab cov dej dub thiab tsw ntxhiab; Yog li ntawd, kev tiv thaiv ib puag ncig nruj me ntsis tswj tag nrho cov qib phosphorus.
II. Tag Nrho Phosphorus tuaj qhov twg?
1. Cov dej phwj hauv tsev
Tib neeg excrement thiab pov tseg
Laundry detergent, tshuaj ntxuav tais diav, xab npum
Chav ua noj khib nyiab, zaub thiab dej ntxuav tais diav
2. Muaj dej khib nyiab
Khoom noj khoom haus, tsev tua tsiaj, electroplating, phosphating, tshuaj, tshuaj, hmoov txhuv nplej siab, thiab cov tsiaj txhu khib nyiab yog tag nrho cov loj phosphorus.
3. Cov chaw sab nraud
Cov dej nag ntxuav cov phosphate chiv los ntawm thaj av ua liaj ua teb, cov tsiaj txhu cov dej khib nyiab pov tseg, thiab cov dej ntws tawm nkag mus rau hauv cov yeeb nkab.
4. Cov peev txheej sab hauv
Anaerobic sludge nyob rau hauv cov tshuaj lom neeg lub tank tso tawm phosphorus, sludge floats nyob rau hauv lub thib ob sedimentation tank, thiab sludge dewatering kua yog rov qab, ua rau tsis tshua muaj zog tab sis ntau tshaj tag nrho phosphorus nyob rau hauv lub effluent.
III. Yuav Ua Li Cas Tshem Tawm Tag Nrho Phosphorus
1. Kev tshem tawm cov phosphorus lom
Lub hauv paus ntsiab lus: Siv polyphosphate- khaws cov kab mob
Ib puag ncig anaerobic: Polyphosphate- khaws cov kab mob tso tawm phosphorus thiab haus cov organic;
Aerobic ib puag ncig: Lawv nqus cov phosphorus ntau dhau thiab khaws cia rau hauv lawv tus kheej;
Thaum kawg, phosphorus raug tshem tawm ntawm lub cev los ntawm kev tso tawm cov sludge ntau dhau.
Cov txheej txheem ntau: A² / O, oxidation ditch, SBR.
Cov ntsiab lus tseem ceeb: Anaerobic digestion yuav tsum tsis muaj oxygen yaj thiab nitrate nitrogen; sludge hnub nyoog yuav tsum tsis txhob ntev dhau; Kev tshem tawm cov sludge raws sijhawm yog qhov tseem ceeb.
2. Tshuaj tua kab mob Phosphorus
Lub hauv paus ntsiab lus: Ntxiv cov tshuaj tiv thaiv nrog phosphates hauv dej, tsim cov dej nag. Cov precipitates no ces muab tshem tawm nrog cov sludge tom qab flocculation thiab sedimentation.
Cov tshuaj lom neeg:
Aluminium ntsev: PAC, aluminium sulfate
Hlau ntsev: polyferric sulfate (PFS), ferric chloride
Calcium ntsev: txiv qaub (rau siab concentrations thiab siab phosphorus ntau ntau)
Ntxiv qhov chaw: tuaj yeem muab ntxiv ua ntej kev kho mob lom lossis tom qab lub tank thib ob. Rau cov kua dej ntau tshaj cov qauv, tshaj tawm - kev kho mob nrog rau hauv qab - kab noj tshuaj yog qhov nyiam.
3. Sib Nqus Phosphorus Tshem Tawm
Advanced oxidation (Fenton, ozone): Ua rau cov organic phosphorus thiab polyphosphate rau hauv orthophosphate, uas yog tom qab ntawd cov tshuaj precipitated.
Filtration/Adsorption: Quartz xuab zeb, zeolite, phosphorus tshem tawm resin tob adsorb residual phosphorus kom ua tiav ultra- qauv qis emission.
Struvite crystallization: tuaj yeem rov qab tau cov peev txheej phosphorus.
Tag nrho phosphorus yog tag nrho cov nyiaj phosphorus hauv dej, uas yog los ntawm domestic, industrial, ua liaj ua teb thiab sludge tso tawm los ntawm cov nroj tsuag. Nws raug tshem tawm los ntawm kev sib xyaw ntawm cov sludge tshem tawm, tshuaj lom neeg thiab kev sib sib zog nqus oxidation adsorption, thiab yog ib qho tseem ceeb tshaj plaws qhia txog cov dej khib nyiab kom tau raws li cov qauv.