INVESTIGATING EFFICIENCY OF TREATING ALUM INFECTED WATER BY BIOLOGIC METHOD ác giả xdbui@dut udn vn t C t ; t t t t t t N ; óm tắt c g m i m ắt t g ả g t t gi i ắt t i i t i i t (sulfate reducing bact[.]
INVESTIGATING EFFICIENCY OF TREATING ALUM-INFECTED WATER BY BIOLOGIC METHOD ác giả: xdbui@dut.udn.vn t t t t C t t t t N ; ; óm tắt: c g m i i t g ả g t t gi i t t (sulfate-reducing bacteria – SRB) gt i ct t gi i i i ả c i t t g i c c g t i ti ả át i ả c i g gc g i t c t g i mc t g c m c i m t g g t g ct g g m gi giảm g i mm m t g g ả t g c i t i m ác gi gc c t gc c g ó : i m ate – SRB; t i i t t mc im it g g t i m gi c t ảt t m i t ảt g c t Abstract: Treating alum groundwater via precipitation reaction between dissolving iron ion and sulfide ion created by sulfate reducing bacteria-SRB is attracting interest of many scientists in the world because of high treatment efficiency, economy and environmental safety In this study, we investigate efficiency of treating domestic alum-infected sewage by anaerobic tank and sulfate reducing bacteria-SRB After eight days treating, experimental results have shown that pH value of sewage sample increased from 3.8 to 7.4, H2S content increased twice and Iron ion [Fe2+] decreased twice The experimental results open a promising direction in treatment of water and other alum-infected water sources to improve the life quality Key words: Sulfate reducing bacteria-SRB; Ground water; Alum; Cattle dung; UASB (Upflow anearobic sludge blanket); Anaerobic