Cov txheej txheem manganese xuab zeb rau kev tshem tawm cov hlau, manganese thiab hydrogen sulfide los ntawm cov dej hauv av tau siv txij li xyoo 1950 hauv tib neeg. Niaj hnub no muaj ob txoj kev kho mob uas cuam tshuam nrog kev siv cov xuab zeb manganese; tshwj xeeb, "IR" (intermittent regeneration) thiab "CR" (nruam rov tsim dua tshiab), ob qho tib si tau dhau los ua qauv kev lag luam. Tsis tas li ntawd, manganese xuab zeb tuaj yeem, nyob rau hauv tej yam kev mob, tshem tawm manganese los ntawm catalytic oxidation.
Manganese xuab zeb tau raug txheeb xyuas ntau dua li glauconite, hlau, potassium, alumino-silicate khoom ntawm marine keeb kwm. Manganese xuab zeb tau siv txij li xyoo 1920 los ua ib qho zeolite rau cov dej softening vim nws cov ion sib pauv muaj peev xwm ntawm kwv yees li 3,000 nplej / cu.
Rau kev tshem tawm cov hlau thiab manganese qhov tshwm sim tsis zoo ntawm cov hmoov nplej ntawm manganese xuab zeb raug ntxuav thiab muab cais los tsim cov khoom siv lim dej uas muaj kev tshuaj xyuas sieve ntawm 18 x 60 mesh nrog qhov ua tau zoo ntawm 0.3-0 .35 mm thiab ib tug uniformity coefficient ntawm 1.60 los yog tsawg dua, muab cov xov xwm zoo heev pom cov yam ntxwv. Manganese xuab zeb yog stabilized, ces coated nrog manganese oxide nyob rau hauv ntau lub xeev valence. Nws yog txheej txheej no uas muab cov xuab zeb manganese nrog nws cov tshuaj tshwj xeeb oxidation-txo cov khoom rau kev tshem tawm cov hlau thiab manganese nrog rau cov khoom me me ntawm hydrogen sulfide.
Qhov zoo ntawm manganese xuab zeb txheej txheem dhau aeration thiab pom yog ib qho twj tso kua mis (raws li cov txheej txheem feem ntau siv lub siab pom), kev ntseeg siab, yooj, thiab cov dej ntws zoo ua ke nrog kev ua haujlwm yooj yim. Ob qho tib si CR thiab IR cov txheej txheem yog qhov tsis yooj yim hauv ob qho tib si lawv tsim thiab kev ua haujlwm thiab ua rau muaj txiaj ntsig zoo, txhim khu kev qha rau kev tshem tawm hlau thiab manganese.
Cov txheej txheem rau kev tshem tawm cov hlau thiab manganese los ntawm manganese xuab zeb hauv CR txoj kev yog oxidation tom qab tshem tawm lub cev ntawm qhov tshwm sim los ntawm kev pom siv manganese xuab zeb los yog manganese greensand-anthracite txaj. Hauv IR txoj kev, cov manganese raug tshem tawm los ntawm kev sib cuag oxidation. Feem ntau, txoj kev CR yog siv qhov twg hlau predominates nrog tsuas yog me me ntawm manganese, thaum IR los yog catalytic oxidation txheej txheem yog siv rau cov dej uas manganese tshem tawm, nrog los yog tsis muaj hlau, yuav tsum tau.