利用无色硫细菌氧化废水中硫化物的研究  

Biotechnological Removal of Sulfides in the Effluent from Sulfate Reducing Reactors

作　　者：左剑恶[1] 袁琳[1] 胡纪萃[1] 顾夏声[1] 

机构地区：[1]清华大学环境工程系

出　　处：《环境科学》1995年第6期7-10,共4页Environmental Science

基　　金：国家自然科学基金

摘　　要：本试验直接以硫酸盐还原相出水作为进水，采用升流式好氧生物膜反应器．在室温（１８—２２℃）条件下，研究了利用好氧无色硫细菌去除水中硫化物的可行性。试验表明，当硫化物容积负荷达到１２ｋｇ／（ｍ３·ｄ）（以Ｈ２Ｓ计，下同）．水力停留时间为２２ｍｉｎ．ｐＨ值为７—８、溶解氧浓度为５．０—５．５ｍｇ／Ｌ时，硫化物的去除率可达９０％以上，被去除的硫化物几乎全部转化为单质硫，同时有机物的去除率约为１０％。试验结果还表明，反应器内所需的溶解氧浓度和ｐＨ值的升高值分别与进水硫化物负荷和硫化物去除负荷里线性关系。Studies have been carried out on the possiblity ofconverting sulfides directly by colourless sulfurbacteria into elemental sulfur in the' treatment ofeffluent from sulfate reducing reactors. Thetreatment was conducted in an up flow bio film reactor packed with Rasschig rings at an ambienttemperature (18 -- 22℃ ). The results show thatsulfides were removed at a 'rate of over 90% andalmost all of sulfides removed were coverted intoelemental sulfur while organics being removed ata rate of about 10% only, when the treatmentwas conducted with a sulfide volumetric loadingof 12 kg H2S/(m3. d), a hydraulic retentiontime of 22 minutes and a dissolved oxygen (DO)concentration of 5. 0.-- 5. 5 mg/L and at a PHvalue of 7-- 8. The results also show that the DOconcentration required in the bio film reactor andthe increase in PH value were linearly correlatedto the sulfide loading in the in fluent and to theamount of sulfides removed, respectively.

关 键 词：好氧 生物脱硫 硫化物 无色硫细菌 废水处理 

分 类 号：X703[环境科学与工程—环境工程]