环境科技
環境科技
배경과기
ENVIRONMENTAL SCIENCE AND TECHNOLOGY
2014年
4期
44-46,64
,共4页
DDNP%絮凝%内电解%厌氧氧化
DDNP%絮凝%內電解%厭氧氧化
DDNP%서응%내전해%염양양화
DDNP (diazo dinit phenel)%Coagulation%Inner electrolysis%Anaerobic oxidation
二硝基重氮酚(DDNP）废水是一种严重污染环境和危害人体健康的难降解工业废水。采用絮凝沉淀-内电解-厌氧生物氧化组合工艺预处理DDNP废水，主要考察了内电解反应的进水pH值、反应时间、铁屑与焦炭的质量比和厌氧池停留时间对DDNP废水CODCr去除效果的影响。小试结果表明：以内电解的进水pH值为3，反应时间为120 min，铁屑与焦炭的质量比为12及厌氧池的停留时间为40 h为最佳工艺条件，在此条件下DDNP废水的CODCr去除率可达82.5%，并显著改善其可生化性。
二硝基重氮酚(DDNP）廢水是一種嚴重汙染環境和危害人體健康的難降解工業廢水。採用絮凝沉澱-內電解-厭氧生物氧化組閤工藝預處理DDNP廢水，主要攷察瞭內電解反應的進水pH值、反應時間、鐵屑與焦炭的質量比和厭氧池停留時間對DDNP廢水CODCr去除效果的影響。小試結果錶明：以內電解的進水pH值為3，反應時間為120 min，鐵屑與焦炭的質量比為12及厭氧池的停留時間為40 h為最佳工藝條件，在此條件下DDNP廢水的CODCr去除率可達82.5%，併顯著改善其可生化性。
이초기중담분(DDNP）폐수시일충엄중오염배경화위해인체건강적난강해공업폐수。채용서응침정-내전해-염양생물양화조합공예예처리DDNP폐수，주요고찰료내전해반응적진수pH치、반응시간、철설여초탄적질량비화염양지정류시간대DDNP폐수CODCr거제효과적영향。소시결과표명：이내전해적진수pH치위3，반응시간위120 min，철설여초탄적질량비위12급염양지적정류시간위40 h위최가공예조건，재차조건하DDNP폐수적CODCr거제솔가체82.5%，병현저개선기가생화성。
DDNP wastewater is a kind of refractory industrial wastewater, which contaminates ecosystem and damages the human health seriously. The coagulation-inner electrolysis-anaerobic oxidation integrated process was established for treatment of the DDNP wastewater, the effect of influent pH, contacting time, Fe/C volume ratio and HRT of anaerobic reactor on CODCr removal efficiency were investigated. Results showed that the optimal conditions for integrated process were: pH 3, reaction time 120min, Fe/C ratio 2 and HRT of anaerobic reactor 40 h. Under these conditions, the integrated process achieved CODCr removal efficiency 82.5%and improved the biochemical character of DDNP wastewater.
