新型重力浓缩池在给水厂污泥浓缩中的应用  

Application of New Type of Gravity Thickening Tank for Sludge Concentration in Waterworks

作　　者：杨熙 唐炜文 陈伟雄 郭露 沈玉东 陈鑫和 YANG Xi;TANG Wei-wen;CHEN Wei-xiong;GUO Lu;SHEN Yu-dong;CHEN Xin-he(Guangzhou Huadu Water Supply Co.Ltd.,Guangzhou 510000,China;Guangdong Architectural Design&Research Institute Co.Ltd.,Guangzhou 510000,China;Guangzhou Zhongke Xinzhou Technology Co.Ltd.,Guangzhou 510000,China)

机构地区：[1]广州市花都自来水有限公司,广东广州510000 [2]广东省建筑设计研究院有限公司,广东广州510000 [3]广州中科鑫洲科技有限公司,广东广州510000

出　　处：《中国给水排水》2024年第17期65-70,共6页China Water & Wastewater

基　　金：广州市花都自来水有限公司技术开发项目(HSB-2022032-JS-019)。

摘　　要：给水厂传统重力浓缩池通常存在故障率高、运行不稳定、出泥含固率低、上清液浑浊等问题。为提升重力浓缩池应用水平,研发了一种新型重力浓缩池,其利用加药后污泥所具备的高效混合絮凝等特性,辅以高水深池体,充分发挥拥挤沉淀作用,实现对排泥水中悬浮物的截留和污泥的高效浓缩。中试结果表明,当表面负荷为1 m^(3)/(m^(2)·h)、固体负荷为6 kg/(m^(2)·h)、阴离子型聚丙烯酰胺(PAM)投加量为2.56 mg/g干泥时,出水上清液浊度可保持在1~10 NTU,平均值为3 NTU,且排泥口含固率可达5%以上,实现较传统浓缩池提高2%的目标,从而提高了污泥脱水单元的运行效能。The traditional gravity thickening tank utilized in waterworks typically encounters several issues,such as frequent malfunctions,unstable operation,low solid content in the discharged sludge,and high turbidity of the supernatant.A new type of gravity thickening tank was developed to promote its application.It fully utilized the high efficiency mixing and flocculation characteristics of the coagulated sludge and was complemented by a deep water tank to fully exert the crowded sedimentation effect,thereby achieving the interception of suspended matters in the discharged sludge water and the efficient concentration of the sludge.The pilot test findings indicated that the turbidity of the supernatant in the effluent could be maintained within the range of 1 NTU to 10 NTU,with an average value of 3 NTU,and the solid content at the sludge outlet could reach over 5%when the surface load was 1 m^(3)/(m^(2)·h),the solid load was 6 kg/(m^(2)·h),and the dosage of anionic PAM was 2.56 mg/g dry sludge.The operational efficiency of the sludge dewatering unit was increased by 2% compared to the traditional thickening tank.

关 键 词：给水厂 排泥水 新型重力浓缩池 高效混合絮凝 高固体负荷 

分 类 号：TU991[建筑科学—市政工程]