养鸭废水处理全流程及资源回收小试研究  

Whole Process of Duck Breeding Wastewater Treatment and Resource Recovery in Bench-scale Test

作　　者：张芳芳 李红岩 谢红伟 刘改革 李相昆 ZHANG Fang-fang;LI Hong-yan;XIE Hong-wei;LIU Gai-ge;LI Xiang-kun(School of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300401,China;CCCC Gas Thermal Power Research and Design Institute Co.Ltd.,Shenyang 110026,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]中交煤气热力研究设计院有限公司,辽宁沈阳110026

出　　处：《中国给水排水》2023年第9期91-96,共6页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51978233);中国博士后基金资助项目(2020M680844)。

摘　　要：以山东省某养鸭场生产废水为研究对象,该废水SCOD浓度平均值约为60000 mg/L,氨氮浓度平均值约为4000 mg/L,总磷浓度平均值约为1300 mg/L,原水B/C值为0.134,废水可生化性比较差,难以采用常规生物工艺进行处理。针对废水特征,采用混凝沉淀—Fenton氧化—吹脱—CSTR—两级SBR组合工艺对其进行处理,同时对处理过程中产生的氨氮和沼气进行资源回收。结果表明,在最佳运行条件下,该组合工艺出水SCOD、氨氮、总磷、BOD_(5)的平均浓度分别为353、28、6和83 mg/L,均达到了《畜禽养殖业污染物排放标准》(GB 18596—2001)的要求。氨氮回收率可达95.8%,并能够回收厌氧过程中产生的沼气,其中CH4含量为58.9%。The average concentrations of SCOD,ammonia nitrogen and total phosphorus in the wastewater from a duck farm in Shandong Province were about 60000 mg/L,4000 mg/L and 1300 mg/L.The bio-degradability of the wastewater was poor because of low B/C ratio(0.134),and it was difficult to be treated with conventional biological processes.According to the characteristics of the wastewater,the combined process of coagulation-precipitation,Fenton oxidation,stripping,CSTR and two-stage SBR was employed to treat the wastewater.In addition,the ammonia nitrogen and biogas generated in the treatment process were recovered.Under the optimal operating conditions,the average SCOD,ammonia nitrogen,total phosphorus and BOD5 in the effluent from the combined process were 353 mg/L,28 mg/L,6 mg/L and 83 mg/L,respectively,which all met the limits specified in the Discharge Standard of Pollutants for Livestock and Poultry Breeding(GB 18596-2001).The recovery rate of ammonia nitrogen reached 95.8%,and the biogas produced in the anaerobic process could be recovered,in which the content of CH_(4) was 58.9%.

关 键 词：养鸭废水 全流程 FENTON氧化 可生化性 资源回收 

分 类 号：TU992[建筑科学—市政工程]