膜法中心岛氧化沟处理高氮低碳城市污水研究
Treatment of Municipal Wastewater with High Nitrogen and Low Carbon Content by Using Membrane Method Centre Island Oxidation Ditch
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- 引用格式:
-
陈国平.膜法中心岛氧化沟处理高氮低碳城市污水研究[J].天然气与石油,2010,28(5):0.doi:
.Treatment of Municipal Wastewater with High Nitrogen and Low Carbon Content by Using Membrane Method Centre Island Oxidation Ditch[J].Natural Gas and Oil,2010,28(5):0.doi:
- DOI:
- 作者:
- 陈国平
- 作者单位:
- 中国石油集团工程设计有限责任公司西南分公司
- 关键词:
- 膜法中心岛氧化沟；氧化沟；培养驯化；氨氮容积负荷
Membrane method centre island oxidation ditch; Oxidation ditch; Domestication and cultivation; Ammonia and nitrogen volume load
- 摘要:
- 为处理某高氮低碳城市污水，实验在选定的氧化沟内放置一定量的YDT弹性立体填料，氧化沟中心岛设置二沉池，使实验主体装置集氧化沟、生物膜法、中心岛二沉池于一体。研究了在此特殊水质及工艺下，实验系统对高氮低碳城市污水有机物及氨氮的脱除性能。实验温度为25±1℃、氨氮容积负荷241.2 g·(m3·d) -1，水力停留时间8.5 h，氨氮的去除率达到83.8%，出水可达到GB 18918-2002《城镇污水处理厂污染物排放标准》一级B标准;硝化菌生长缓慢，驯化时间长，达到极限负荷需4~5个月。
In order to treat municipal wastewater with high nitrogen and low carbon content, a certain amount of YDT elastomeric stereoscopic packing is placed in oxidation ditch and secondary sedimentation tank is equipped in oxidation ditch centre island to integrate such main experimental units as oxidation ditch, biological membrane and center island. Studied is the performance of the experimental system removing organic matters, ammonia and nitrogen from municipal wastewater with high nitrogen and low carbon content in special water quality and process conditions. In case of test temperature25℃±1℃, ammonia and nitrogen volume load of241.2 g· (m3·d) –1 and hydraulic retention time of 8.5 h, ammonia and nitrogen removal rate can reach 83.8% , the treated water can reach Standard A of the first class in "Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant" (GB 18918-2002). Denitrifying bacteria grows slowly, its domestication time is long and 4.5 months are needed to reach the limit load.
