旋转式带式过滤器强化生活污水预处理的评估优化  

Evaluation and optimization of rotating belt filter for enhanced pretreatment of domestic sewage

作　　者：周晓 侯锋 干里里 刘莹 庞洪涛 ZHOU Xiao;HOU Feng;GAN Lili;LIU Ying;PANG Hongtao(SDIC Xinkai Water Environment Investment Co.Ltd.,Beijing 101101,China;Beijing Zhiyu Tiancheng Design Consulting Co.Ltd.,Beijing 101101,China)

机构地区：[1]国投信开水环境投资有限公司,北京101101 [2]北京智宇天成设计咨询有限公司,北京101101

出　　处：《环境工程学报》2023年第2期461-470,共10页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07103-003)。

摘　　要：为探究适用于我国污水水质特点的强化预处理工艺,在贵阳某污水厂内搭建了旋转式带式过滤器生产性实验装置(4000 m3·d^(-1))。针对实际生活污水,考察了其处理效果及相关的影响因素,核算了砂渣去除对生化系统效能提升的具体效果。结果表明:旋转式带式过滤器可同步去除污水中以砂渣为代表的惰性有机颗粒及无机颗粒,对粒径200μm以上颗粒物的平均去除率达81.6%,预期可提升10%的活性污泥挥发性悬浮固体比例,降低8.4%的污泥产量及12.4%的混合液污泥浓度。过滤时间和水力负荷是影响处理效果的主要因素,当过滤时间大于5 s、水力负荷处于150~250 m·h^(-1)时可取得较好的污染物去除效果。该设备可用于我国生活污水强化预处理,且适宜在较高转速下以机械过滤模式运行。In order to explore the enhanced pretreatment process being applicable to the characteristics of sewage quality in China, a production test device(4 000 m3·d^(-1)) of rotating belt filter(RBF) was built in a sewage plant in Guiyang. For the actual domestic sewage, the treatment efficiency and influencing factors of the RBF were investigated, and the specific effect of sand and slag removal on the improvement of biochemical system efficiency was calculated. The results showed that the RBF could simultaneously remove inert organic particles and inorganic particles represented by sand slag in sewage, and the average removal rate of particulates larger than 200μm could reach 81.6%. The RBF was expected to increase the proportion of volatile suspended solids in activated sludge by 10%, reduce the sludge production by 8.4% and the mixed liquor suspended solid by 12.4%. The filtering time and hydraulic load were the main factors affecting the treatment efficiency. When the filtering time was longer than 5s and the hydraulic load was between 150 m·h^(-1) and 250 m·h^(-1), a better performance on pollutions removal by the RBF could occur. The RBF can be used for the enhanced pretreatment of domestic sewage in China, and it is suitable to operate in the mechanical filtration mode at a higher speed.

关 键 词：强化预处理 旋转式带式过滤器 砂渣同步去除 机械过滤 生化系统效能提升 

分 类 号：X703[环境科学与工程—环境工程]