通沟污泥处理站改造实例

Reconstruction Example of a Sewer Sludge Disposal Station

苏州某通沟污泥处理站存在卸料时间长、操作人员多、管道易堵塞、水消耗量大等问题,对其实施技术改造:将原卸料口的固定钢格栅栅隙由100 mm改为200 mm;新增双轴破碎机,取消喂料抓斗;增加水力旋流器和砂水分离器;将处理后的污水回用到前端供洗涤转鼓、洗砂单元和精细格栅使用。改造后的通沟污泥处理站卸料方便、自动化程度高,减少了3名操作人员,管道不再因细砂而堵塞;降低了水耗,处理水耗由改造前的30 m^(3)/t污泥降至5 m^(3)/t污泥。运行结果表明,改造后的工艺具有运行稳定、自动化程度高、管道不易堵塞、水耗低等特点,可为其他同类项目的建设提供参考。

Based on the problems of long unloading time,many operators,easy blockage of pipelines and large water consumption in a sewer sludge treatment station in Suzhou,the treatment station was transformed technically to change the fixed grid spacing of the original discharge port from 100 mm to 200 mm,to add a double shaft crusher,to cancel the feeding grab,and to add a new hydrocyclone and sand water separator.The treated sewage is recycled to the front-end supply washing drum,sand washing unit and fine grid.The reconstructed sewer sludge treatment station has convenient unloading and high degree of automation,reducing three operators.The pipeline is no longer blocked by fine sand.The water consumption was reduced from 30 m^(3)/t sludge before transformation to 5 m^(3)/t sludge.The operation results show that the reformed process has the characteristics of stable operation,high degree of automation,no longer pipeline blockage and low water consumption,which can provide reference for the construction of similar projects.