复合A/O工艺在城市污水处理厂除磷脱氮中的应用研究
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摘要
为了探讨复合A/O工艺在城市污水处理厂应用的可行性,考察了复合A/O工艺对城市污水中有机物、TN和TP等去除效果,并进行了9个多月的生产性试验研究。结果表明:进水COD,TN,NH_4~+-N,TP,SS质量浓度范围分别为16.0~428.0,2.0~40.6,0.3~35.8,0.4~5.0,107.0~157.0 mg/L,出水指标分别为0.4~58.5,0.4~20.0,0.1~30.7,0.1~1.0,3.0~18.0 mg/L。COD,TN,NH_4~+-N,TP,SS平均去除率为64.6%,40.7%,79.3%,57.5%和91.8%。复合A/O工艺具有良好的除磷脱氮效果,出水清澈,出水水质稳定低于GB 18918—2002《城镇污水处理厂污染物排放标准》,说明复合A/O工艺适合在污水处理厂中应用。
To explore the feasibility of the application of a hybrid A/O process in municipal wastewater treatment plant, the removal efficiency of organic matter, total nitrogen(TN) and total phosphorus(TP) in municipal wastewater by a hybrid A/O process was investigated. More than 9 months of productive experiments were carried out. The results showed that the influent COD, TN, NH_4~+-N, TP, SS concentration were 16.0 ~ 428.0, 2.0 ~ 40.6, 0.3 ~ 35.8, 0.4 ~ 5.0, 107.0 ~ 157.0 mg/L. The effluent parameter were 0.4 ~ 58.5, 0.4 ~ 20, 0.1 ~ 30.7, 0.1 ~ 1.0, 3.0 ~ 18.0 mg/L. The averaged removal rate of COD, TN, NH_4~+-N, TP and SS were 64.6%, 40.7%, 79.3%, 57.5% and 91.8%. The hybrid A/O process has a good efficiency of the removal of phosphorus and nitrogen, the effluent was clear, the effluent water qualities were more lower than pollutant discharge standard of urban sewage treatment plants(GB 18918 — 2002), which indicates that the hybrid A/O process is suitable for application in wastewater treatment plants.
To explore the feasibility of the application of a hybrid A/O process in municipal wastewater treatment plant, the removal efficiency of organic matter, total nitrogen(TN) and total phosphorus(TP) in municipal wastewater by a hybrid A/O process was investigated. More than 9 months of productive experiments were carried out. The results showed that the influent COD, TN, NH_4~+-N, TP, SS concentration were 16.0 ~ 428.0, 2.0 ~ 40.6, 0.3 ~ 35.8, 0.4 ~ 5.0, 107.0 ~ 157.0 mg/L. The effluent parameter were 0.4 ~ 58.5, 0.4 ~ 20, 0.1 ~ 30.7, 0.1 ~ 1.0, 3.0 ~ 18.0 mg/L. The averaged removal rate of COD, TN, NH_4~+-N, TP and SS were 64.6%, 40.7%, 79.3%, 57.5% and 91.8%. The hybrid A/O process has a good efficiency of the removal of phosphorus and nitrogen, the effluent was clear, the effluent water qualities were more lower than pollutant discharge standard of urban sewage treatment plants(GB 18918 — 2002), which indicates that the hybrid A/O process is suitable for application in wastewater treatment plants.
引文
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[3]刘如玲,宋美芹.城市污水处理厂升级改造工程设计与运行效果[J].海洋湖沼通报,2015(1):134-140.
[4]韩宁.城市污水分段进水生物除磷脱氮工艺处理效果研究[D].天津:天津大学,2012.
[5]张雁秋,曹文平,汪银梅.复合填料曝气生物滤池净化校园化粪池出水中的营养盐[J].徐州工程学院学报(自然科学版),2015,30(4):24-27.
[6]李文龙,杨碧印,陈益清,等.不同外加碳源反硝化滤池的深度脱氮特性研究[J].水处理技术,2015,41(11):82-85.
[7]周丽颖,边靖,凌薇,等.污泥内碳源反硝化工艺强化脱氮除磷的应用研究[J].中国给水排水,2015,31(17):12-15.
[8]CAO Yong-feng,ZHANG Chao-sheng,RONG Hong-wei,et al.The effect of dissolved oxygen concentration(DO)on oxygen diffusion and bacterial community structure in moving bed sequencing batch reactor(MBSBR)[J].Water research,2017,108:86-94.
[9]徐涛,彭党聪,徐天凯,等.活性污泥和生物膜复合模型的建立与模拟[J].环境工程学报,2017,11(11):5 909-5 916.
[10]于亮.低温条件生物膜与活性污泥复合工艺强化生物脱氮性能的中试研究[J].环境科学与管理,2017,42(4):96-99.
[11]王明辉,尹素虹,梁碧晓,等.一体化污水处理技术研究进展[J].广东石油化工学院学报,2017,27(1):26-30.
[12]国家环境保护总局.水和废水监测分析方法[M].北京:中国环境科学出版社,2002:352-553.
[13]CAO Wei-ping,ZHANG Jian,WANG Yin-mei,et al.An ultraviolet/biological(UV/B)reactor for the removal of nitrogenous compounds from the secondary effluent of wastewater treatment plants(WWTPs)[J].RSC advance,2015,5:32 239-32 244.
[14]张雁秋,曹文平,刘莉,等.基质对生态浮床净化效果和大型水生植物生长的影响[J].徐州工程学院学报(自然科学版),2013,28(4):18-23.