菌剂强化多级A/O工艺处理低温农村生活污水脱氮除磷效果

doi:10.14088/j.cnki.issn0439-8114.2019.20.013

湖北农业科学 ›› 2019, Vol. 58 ›› Issue (20): 63-67.doi: 10.14088/j.cnki.issn0439-8114.2019.20.013

菌剂强化多级A/O工艺处理低温农村生活污水脱氮除磷效果

李乔, 欧阳彤, 柏林, 侯君霞, 张文艺

常州大学环境与安全工程学院,江苏常州 213164

收稿日期:2019-03-22 出版日期:2019-10-25 发布日期:2019-11-19
通讯作者: 张文艺（1968-）,男,安徽安庆人,教授,博士,主要从事水污染控制与生态修复的研究,（电话）13915046002（电子信箱）zwy@cczu.edu.cn。
作者简介:李乔（1993-）,男,江苏徐州人,硕士,主要从事水处理研究,（电话）18752064629（电子信箱）630245497@qq.com;
基金资助:
国家水体污染控制与治理科技重大专项（2017ZX07202-003-06）

Enhancing nitrogen and phosphorus removal efficiency of multi-stage A/O process with bacteria for low temperature rural sewage treatment

LI Qiao, OUYANG Tong, BO Lin, HOU Jun-xia, ZHANG Wen-yi

School of Environmental & Safety Engineering,Changzhou University,Changzhou 213164,Jiangsu,China

Received:2019-03-22 Online:2019-10-25 Published:2019-11-19

摘要/Abstract

摘要： 针对冬春季分散式农村生活污水处理设施脱氮除磷效果差、普遍超标的难题,构建生物填料型多级A/O试验装置和48 t/d的示范工程处理设备,形成生物膜/活性污泥混合净化系统,以投加反硝化聚磷菌（B8）为强化手段,考察B8菌对多级A/O系统去除氨氮、总氮和总磷的强化效果,同时跟踪监测示范工程的应用效果。结果表明,投加B8菌剂可以一定程度上强化低温条件下（9~13 ℃）多级A/O工艺的脱氮除磷效果,与未投菌装置的氨氮、总氮和总磷的出水浓度4.13、16.29、和0.67 mg/L相比,投菌装置的出水浓度分别为2.31、10.11和0.48 mg/L,达到一级A排放标准。更低温度条件下（3~7 ℃）时,投菌、未投菌装置对氨氮、总氮、总磷的去除效果未见明显差异,分别维持在35%、30%和43%左右。经过B8菌剂强化后的农村污水处理设施（48 t/d）出水水质有所改善,氨氮平均去除率由86.4%增至92.6%,总氮平均去除率由45.9%增至57.3%,总磷平均去除率由67.8%增至76.1%,但COD_cr的平均去除率为72.8%,较未投菌的74.5%相差不大。氨氮出水达到一级A排放标准,COD_cr、总氮、总磷出水达到一级B排放标准。

关键词: 农村污水, 多级A/O, 低温条件, 脱氮除磷, 反硝化菌

Abstract: Aimed at the problem of poor nitrogen and phosphorus removal in winter and spring for rural domestic sewage treatment facilities which was decentralized, and even exceeding the standard widespreadly, a bio-filled multi-stage A/O device and demonstration engineering treatment equipment（48 t/d） were constructed to treat sewage, where it would form a biofilm/activated sludge mixture, and added the denitrification bacteria（B8） into the facilities. The enhancement effect of the removal of NH₄⁺-N, TN and TP in multi-stage A/O system with the B8 bacteria was investigated,and track the application effect in the demonstration equipment. The results showed that the effect of nitrogen and phosphorus removal by multi-stage A/O process under low temperature conditions（9~13 ℃） can be strengthened to a certain extent by adding bacteria（B8）. Compared with the effluent of NH₄⁺-N, TN and TP 4.13,16.29,0.67 mg/L, respectively, for the device without B8, the effluent of the device with B8 was 2.31,10.11 and 0.48 mg/L,respectively, reaching the first-class A emission standard. At lower temperature（3~7 ℃）, compared with the removal effect of NH₄⁺-N, TN and TP for the device without B8, there was no significant difference in the device with B8, and the removal effect was generally maintained at 35%, 30% and 43%,respectively. The effluent quality of the rural sewage treatment facilities（48 t/d） was improved due to adding the B8 microbial agent. The average removal rate of NH₄⁺-N increased from 86.4% to 92.6%, the average removal rate of TN increased from 45.9% to 57.3%, and the average removal rate of TP increased from 67.8% to 76.1%, but the average removal rate of COD_cr was 72.8%, which was not significantly different from the 74.5% of the device without B8. The effluent of NH₄⁺-N reached the first-class A emission standard, and the effluent of COD_cr,TN and TP reached the first-class B emission standard.

Key words: rural sewage, multi-stage A/O, low temperature conditions, nitrogen and phosphorus removal, denitrification bacteria

中图分类号:

X703

李乔, 欧阳彤, 柏林, 侯君霞, 张文艺. 菌剂强化多级A/O工艺处理低温农村生活污水脱氮除磷效果[J]. 湖北农业科学, 2019, 58(20): 63-67.

LI Qiao, OUYANG Tong, BO Lin, HOU Jun-xia, ZHANG Wen-yi. Enhancing nitrogen and phosphorus removal efficiency of multi-stage A/O process with bacteria for low temperature rural sewage treatment[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(20): 63-67.

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菌剂强化多级A/O工艺处理低温农村生活污水脱氮除磷效果

Enhancing nitrogen and phosphorus removal efficiency of multi-stage A/O process with bacteria for low temperature rural sewage treatment

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