Kev kho mob ua ntej
Vim muaj cov ntsiab lus siab ntawm phenol, ammonia thiab fluorine hauv coal gasification wastewater, thiab kev rov qab tuaj yeem tsis tsuas yog zam cov khoom siv pov tseg xwb, tab sis kuj txo qhov nyuaj ntawm kev kho cov dej khib nyiab tom qab pretreatment. Feem ntau, cov txheej txheem ntawm lub cev thiab tshuaj pretreatment ntawm thee gasification wastewater yog: tshem tawm phenol, tshem tawm ammonia, tshem tawm fluorine, thiab lwm yam.
Kev kho mob biochemical
Tom qab pretreatment, COD ntawm thee gasification dej khib nyiab tseem siab, cov ammonia nitrogen yog {{{0}}}mg / l, thiab BOD5 / COD ntau yog 0.25-0.35, yog li cov roj ntsha. kev sib xyaw tshuab nrog nitrogen tshem tawm muaj nuj nqi feem ntau yog siv. Txoj kev siv tshuaj lom neeg denitrification feem ntau suav nrog: anoxic - aerobic method (A / O txheej txheem), anaerobic - anoxic - aerobic method (AA / O txheej txheem), SBR txoj kev, oxidation ditch, aeration biofilter method (BAF), thiab lwm yam.
Kev kho mob tob
Tom qab cov txheej txheem biochemical ntau theem, cov kua dej COD tseem nyob hauv thaj tsam ntawm 100-200mg / l, thiab kev kho mob txuas ntxiv yuav tsum ua kom tiav qhov tso tawm lossis rov siv cov kua dej rov qab. Tam sim no, txoj hauv kev tseem ceeb ntawm kev kho mob tob hauv tsev thiab txawv teb chaws yog coagulation thiab sedimentation, siab oxidation, adsorption lossis membrane kho tshuab.
Concentrated brine kho
Rau gasification dej khib nyiab nrog cov ntsiab lus ntsev siab, TDS concentration feem ntau yog nyob ib ncig ntawm 10000mg / L. Ntxiv nrog rau pretreatment thiab biochemical kev kho mob, ultrafiltration thiab thim rov qab osmosis daim nyias nyias feem ntau yog siv los tshem tawm ntsev, thiab daim nyias nyias cov dej tau rov qab siv dua, thiab cov dej concentrated nkag mus rau hauv qhov chaw evaporation crystallization, uas yog qhov tseem ceeb thiab nyuaj taw tes kom ua tiav xoom paug. ntawm cov dej khib nyiab.