红外反射技术在中小水厂排泥系统改造中的应用

Application of Infrared Reflection Technology in the Reform of Sludge Discharge System in Medium and Small Waterworks

平流沉淀池是净水工艺中常见的工艺单元,其排泥设施主要包括桁架式刮吸泥机和穿孔排泥管,因刮泥机和排泥管独立运行,常导致平流沉淀池排泥不彻底、积泥等问题。针对该问题,提出了一种基于红外反射技术的平流沉淀池排泥系统改造方案,可实现桁架式刮吸泥机与排泥角阀联动控制,使刮泥和排泥过程精准关联,改善排泥效果。排泥系统经改造后,沉淀池出水水质提升,浊度降低53%~60%;排泥水量减少,自用水率降低约16%;排泥系统电耗大幅缩减,同比降低47%~53%。该改造方案投资仅2.8万元,在提升工艺出水水质的同时实现节能降耗,可为存在类似问题的水厂提供借鉴。

Horizontal flow sedimentation tank is a common unit in water purification process,and its sludge discharge facilities mainly include truss-type sludge scraper and perforated sludge discharge pipe.The independent operation of sludge scraper and discharge pipe often causes problems in the horizontal flow sedimentation tank such as incomplete sludge discharge and sludge accumulation.To solve this problem,a retrofit scheme of horizontal flow sedimentation tank sludge discharge system was proposed,based on infrared reflection technology.The truss-type sludge scraper and sludge discharge angle valve could be controlled jointly to accurately correlate the scraping and discharge process and improve the sludge discharge effect.After the reform,the effluent quality of the sedimentation tank was improved,and the turbidity was reduced by 53%to 60%.The sludge discharge was reduced and the rate of self-use water was reduced by about 16%.The power consumption of the sludge discharge system had been greatly reduced,with a year-on-year decrease of 47%to 53%.The total investment of the renovation plan was only 28000 yuan,which improved the effluent quality and reduced energy consumption.This provided a technical reference for waterworks with the same problem.