生物倍增工艺在生猪养殖废水处理工程中的应用  

Application of bio-doubling process in the pig breedingwastewater treatment project

作　　者：陆人春 倪燕霞 胡文坚 吴硕涛 刘兴利 王长智[2] 梅荣武[2] LU Renchun;NI Yanxia;HU Wenjian;WU Shuotao;LIU Xingli;WANG Changzhi;MEI Rongwu(Hangzhou Research Institute of China Coal Technology&Engineering Group,Hangzhou 311201,China;Environmental Science Research and Design Institute of Zhejiang Province,Hangzhou 310007,China)

机构地区：[1]中煤科工集团杭州研究院有限公司,浙江杭州311200 [2]浙江省环境保护科学设计研究院,浙江杭州310007

出　　处：《能源环境保护》2022年第6期138-143,158,共7页Energy Environmental Protection

基　　金：浙江省环境污染控制技术研究重点实验室开放基金项目(Zjshky2019-4)。

摘　　要：为实现生猪养殖废水稳定达标排放,采用生物倍增工艺处理生猪养殖废水。试验结果表明:在回流比为50∶1、HRT为150 h,DO为0.3~0.5 mg/L、MLSS为6~8 g/L的条件下,生物倍增工艺出水COD_(Cr)、氨氮浓度可以达到《污水综合排放标准》(GB 8978-1996)一级标准限值要求(COD_(Cr)浓度≤100 mg/L、NH^(+)_(4)-N浓度≤15 mg/L);相比A/O工艺,生物倍增工艺处理生猪养殖废水节约了近30%的占地面积,缩短了约70%的水力停留时间,减少了约50%吨水处理用电量。The bio-doubling process was applied to the treatment of pig breeding wastewater to meet the discharge standards stably.The results showed that the effluent concentrations of COD_(Cr) and ammonia nitrogen by the bio-doubling process met the Class I discharge standard of Integrated Wastewater Discharge Standard(GB 8978-1996)(c_(COD_(Cr))≤100 mg/L、c NH^(+)_(4)-N≤15 mg/L),when reflux ratio was 50∶1,HRT was 150 h,DO concentration was 0.3~0.5 mg/L and MLSS concentration was 6~8 g/L.Compared with the traditional A/O process,the bio-doubling process reduced about 30%of the floor area,70%of hydraulic retention time and 50%of power consumption per ton water for the pig breeding wastewater treatment.

关 键 词：生猪养殖废水 生物倍增 废水处理工程 COD 氨氮 

分 类 号：X703[环境科学与工程—环境工程]