多段式接触氧化工艺除磷效果及污泥磷回收研究
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摘要
利用多段式接触氧化法工艺的中试装置(有12级反应槽)处理北京某污水处理厂的污水,以污泥减量为目的研究不同水力停留时间和曝气量下装置的除磷效果及12格沿程的磷变化情况,探究污泥灰分磷回收。结果表明,水力停留时间24 h相对于12 h,装置抗冲击负荷能力较好,且磷去除率高达91. 92%,优于传统生物除磷工艺,腐殖污泥磷含量74. 5 mg P/g DS,其灰分磷含量高达167 mg P/g SA,相当于高品位磷矿,采用盐酸作为浸出剂时,可快速从腐殖污泥灰分中提取90%的磷。
A pilot plant with multi-stage contact oxidation process( with 12 grade reaction tanks) was used to treat sewage from a sewage treatment plant in Beijing. Aiming at sludge reduction,the phosphorus removal effect of the plant and the phosphorus change along 12 rows under the conditions of different hydraulic retention time( HRT) and aeration rate were studied,and the recovery of phosphorus from sludge ash was explored. The results showed that when the HRT was 24 h comparing to 12 h,the capacity of resisting shock load is better,and the phosphorus removal rate is as high as 91. 92%,which is superior to the traditional biological phosphorus removal process. The phosphorus content of humic sludge is74. 5 mg P/g DS,and the phosphorus content of ash is up to 167 mg P/g SA. When hydrochloric acid is used as leaching agent,90% phosphorus can be quickly extracted from humic sludge ash.
A pilot plant with multi-stage contact oxidation process( with 12 grade reaction tanks) was used to treat sewage from a sewage treatment plant in Beijing. Aiming at sludge reduction,the phosphorus removal effect of the plant and the phosphorus change along 12 rows under the conditions of different hydraulic retention time( HRT) and aeration rate were studied,and the recovery of phosphorus from sludge ash was explored. The results showed that when the HRT was 24 h comparing to 12 h,the capacity of resisting shock load is better,and the phosphorus removal rate is as high as 91. 92%,which is superior to the traditional biological phosphorus removal process. The phosphorus content of humic sludge is74. 5 mg P/g DS,and the phosphorus content of ash is up to 167 mg P/g SA. When hydrochloric acid is used as leaching agent,90% phosphorus can be quickly extracted from humic sludge ash.
引文
[1]郝晓地.可持续污水-废物处理技术[M].北京:中国建筑工业出版社,2006.
[2]孙震,张云芳.多段式接触氧化法污泥减量工艺污泥减量生物处理系统及其水处理方法:中国,201610511134. 9[P]. 2016-10-26.
[3]陈奇,张柏鸿,李红,等.基于多段式接触氧化法污泥减量工艺装置对造纸废水污泥减量的试验分析[J].辽宁化工,2017,46(6):543-546.
[4] Lee N M,Welander T. Reducing sludge production in aerobic wastewater treatment through manipulation of the ecosystem[J]. Water Research,1996,30(8):1781-1790.
[5]egaard H. Sludge minimization technologies——an overview[J]. Wat Sci Tech,2004,49(10):31-40.
[6] Lee N M,Welander T. Use of protozoa and metazoa for decreasing sludge production in aerobic wastewater treatment[J]. Biotechnology Letters,1996,18(4):429-434.
[7]李立欣,赵乾身,马放,等.废水处理中污泥减量技术现状及发展趋势[J].水处理技术,2015,41(1):1-4.
[8]陈奇,张柏鸿,李红,等.基于多段式接触氧化法污泥减量工艺装置对造纸废水污泥减量的试验分析[J].辽宁化工,2017,46(6):543-546.
[9]国家技术监督局. GB 11893—1989水质总磷的测定钼酸铵分光光度法[S].北京:中国标准出版社,1989.
[10]国家环境保护总局水和废水监测分析方法编委会.水和废水监测分析方法[M]. 4版,增补版.北京:中国环境科学出版社,2002:246-248.
[11]中华人民共和国建设部. CJ/T 221—2005城市污水处理厂污泥检验方法[S].北京:中国标准出版社,2005.
[12]环境保护部. HJ 636—2012水质总氮的测定碱性过硫酸钾消解紫外分光光度法[S].北京:中国环境科学出版社,2012.
[13]环境保护部. HJ 535—2009水质氨氮的测定纳氏试剂分光光度法[S].北京:中国环境科学出版社,2009.
[14]国家环境保护总局,国家质量监督检验检疫总局. GB18918—2002城镇污水处理厂污染物排放标准[S].北京:中国环境出版社,2002.
[15]北京市环境保护局,北京市质量技术监督局. DB11/T890—2012城镇污水处理厂水污染物排放标准[S].北京:中国环境科学出版社,2012.
[16] Ghyoot W,Verstraete W. Reduced sludge production in a two-stage membrane-assisted bioreactor[J]. Water Research,2000,34(1):205-215.
[2]孙震,张云芳.多段式接触氧化法污泥减量工艺污泥减量生物处理系统及其水处理方法:中国,201610511134. 9[P]. 2016-10-26.
[3]陈奇,张柏鸿,李红,等.基于多段式接触氧化法污泥减量工艺装置对造纸废水污泥减量的试验分析[J].辽宁化工,2017,46(6):543-546.
[4] Lee N M,Welander T. Reducing sludge production in aerobic wastewater treatment through manipulation of the ecosystem[J]. Water Research,1996,30(8):1781-1790.
[5]egaard H. Sludge minimization technologies——an overview[J]. Wat Sci Tech,2004,49(10):31-40.
[6] Lee N M,Welander T. Use of protozoa and metazoa for decreasing sludge production in aerobic wastewater treatment[J]. Biotechnology Letters,1996,18(4):429-434.
[7]李立欣,赵乾身,马放,等.废水处理中污泥减量技术现状及发展趋势[J].水处理技术,2015,41(1):1-4.
[8]陈奇,张柏鸿,李红,等.基于多段式接触氧化法污泥减量工艺装置对造纸废水污泥减量的试验分析[J].辽宁化工,2017,46(6):543-546.
[9]国家技术监督局. GB 11893—1989水质总磷的测定钼酸铵分光光度法[S].北京:中国标准出版社,1989.
[10]国家环境保护总局水和废水监测分析方法编委会.水和废水监测分析方法[M]. 4版,增补版.北京:中国环境科学出版社,2002:246-248.
[11]中华人民共和国建设部. CJ/T 221—2005城市污水处理厂污泥检验方法[S].北京:中国标准出版社,2005.
[12]环境保护部. HJ 636—2012水质总氮的测定碱性过硫酸钾消解紫外分光光度法[S].北京:中国环境科学出版社,2012.
[13]环境保护部. HJ 535—2009水质氨氮的测定纳氏试剂分光光度法[S].北京:中国环境科学出版社,2009.
[14]国家环境保护总局,国家质量监督检验检疫总局. GB18918—2002城镇污水处理厂污染物排放标准[S].北京:中国环境出版社,2002.
[15]北京市环境保护局,北京市质量技术监督局. DB11/T890—2012城镇污水处理厂水污染物排放标准[S].北京:中国环境科学出版社,2012.
[16] Ghyoot W,Verstraete W. Reduced sludge production in a two-stage membrane-assisted bioreactor[J]. Water Research,2000,34(1):205-215.