超磁分离技术在污水厂除浊去磷中的应用研究

摘要

Suspended solids and phosphorus in sludge thicker supernatant and filter backwash water in WWTPs are highly-concentrated without effective treatment, resulting in increase of the load of the main sewage treatment process. In order to reduce the load of total phosphorus and suspended solids in the backwash water and concentration pools, application of ReCoMag in suspended solid and phosphorus removal is studied and related economic and technical analysis is carried out. The results indicate that ReCoMag has high removal efficiency of suspended solids and phosphorus from backwash water and sludge thicker supernatant. By application of ReCoMag, removal rates of suspended solids and total phosphorus can be over 90% and over 80% respectively, with economic and technical feasibility. Wastewater treatment process can be optimized and the main process load can be reduced. Energy saving and consumption reduction can be realized and water quality of the effluent from WWTPs can be stabilized.%针对城市污水处理厂污泥浓缩池上清液及滤池反冲洗水中的悬浮物和磷浓度高、没有有效处理手段、增加污水处理主流程负荷的现状，以削减反冲水和浓缩池上清液中的总磷和悬浮物负荷为目标，开展超磁分离除浊去磷技术应用研究，并进行了经济技术分析。结果显示：超磁分离除浊去磷技术对滤池反冲水及污泥浓缩池上清液具有良好的去除效果，可实现对悬浮物去除率>90%，总磷去除率>80%，具有经济技术可行性，可优化污水处理工艺，降低主流程负荷，节能降耗，稳定污水厂水质。