ZHU Shi jie.Influence of High Reductive Wastewater into Domestic Sewage Treatment Plant and Its Countermeasures[J].China Water & Wastewater,2018,34(20):119-122.
强还原性废水进入生活污水处理厂的应急处理措施
- Title:
- Influence of High Reductive Wastewater into Domestic Sewage Treatment Plant and Its Countermeasures
- 文章编号:
- 1000-4602(2018)20-0119-04
- 分类号:
- TU992
- 文献标志码:
- C
- 摘要:
- 2017年昆山市新苑生活污水厂受到不明废水的冲击，出水TP指标出现异常，经过各工艺段巡视、数据分析，判定污水厂进水中含有强还原性废水，导致出水TP超标。通过工艺调整、药剂投加试验发现，还原性废水进入生活污水处理厂后导致生物除磷作用完全丧失，同时活性污泥中的磷也释放到水体中，并且使投加的化学除磷药剂（聚铁）中的Fe3+迅速被还原，难以与磷酸盐结合生成沉淀，从而丧失除磷效果。通过投加强氧化剂，能够恢复化学除磷药剂（聚铁）的效果，降低污水中的磷酸盐浓度，保持生活污水厂的正常运行。
- Abstract:
- The effluent TP of Kunshan Xinyuan domestic sewage plant was abnormal in 2017, due to the impact of unknown influent. Through process inspection and data analysis, it was determined that the influent of the sewage plant contained high reductive wastewater, resulting in effluent TP exceeding the standard. Through process adjustment and chemical dosing experiment, it was found that the entering of reductive wastewater caused complete loss of biological phosphorus removal effect, and at the same time, the phosphorus in the activated sludge was also released into the water body. Besides, the Fe3+of chemical phosphorus removal agent (polymeric iron) was quickly reduced, so that it was difficult to combine with phosphate to form precipitate and lost the phosphorus removal effect. The effect of chemical phosphorus removal agent (polymeric iron) can be recovered by dosing the oxidant, thus the phosphate concentration in the sewage is reduced, and the normal operation of the domestic sewage plant is maintained.
参考文献/References:
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［2］贾晓燕. 废水除磷技术的研究［J］. 重庆环境科学，2003,25(12)：191-192.Jia Xiaoyan. Study on phosphorus removal technology of wastewater［J］. Chongqing Environmental Science,2003,25(12):191-192（in Chinese).
［3］崔洪升. 废次氯酸钠废水中磷的去除［J］. 中国给水排水，2015，31（14）：108-111.Cui Hongsheng. Removal of phosphorus from waste sodium hypochlorite wastewater［J］. China Water & Wastewater,2015,31(14):108-111（in Chinese).
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备注/Memo
作者简介：朱师杰（1987-），男，湖北孝感人，大学本科，工程师，研究方向为污水处理工艺及设备运行调控、河道生态修复。
E-mail:zhushijie1012@163.com
收稿日期：2018-03-18