XIEYa-wei,ZHUFang-jun,FENGWei-hua,et al.Optimization and Engineering Verification of Backwashing Parameters of V-shaped Filters[J].China Water & Wastewater,2025,41(15):61-67.
V型滤池反冲洗参数优化及工程验证
- Title:
- Optimization and Engineering Verification of Backwashing Parameters of V-shaped Filters
- 摘要:
- V型滤池因其滤层截污能力强、反冲洗周期长、出水水质好等优点在水厂广泛应用，但运行中反冲洗参数不合理则会影响滤料稳定，造成能耗过大等问题。为此，进行了V型滤池中试（产水量为24 m3/d）、生产性试验（产水量为2.5×104 m3/d）及长期运行研究。中试结果表明，气水联合反冲洗阶段，在保持滤层微膨胀状态下，气水联合反冲洗水冲强度/单独水冲强度（vw/vmf）为0.40~0.60时，对滤料颗粒上杂质具有较强的剥离作用。生产性试验结果表明，气水联合反冲洗阶段，当vw/vmf降至0.49时，单独气冲强度可由8.8 L/（s·m2）降至6.6 L/（s·m2）。在常温期和低温期，优化后生产性试验的滤池出水浊度稳定在0.1 NTU以下，满足要求的同时解决了滤池的跑砂问题；较水厂原运行方案，优化后单池反冲洗节水率达23.2%，节电率达49.5%，节能效果显著。
- Abstract:
- V?shaped filters are extensively utilized in waterworks owing to their robust interception capacity of the filter layer, extended backwashing cycle, and superior effluent quality. Nevertheless, during operation, if the backwashing parameters are improperly configured, this may compromise the stability of the filter media and lead to issues such as excessive energy consumption. This paper carried out a pilot test of the V-shaped filter (with a water production capacity of 24 m3/d), a production test (with a water production capacity of 2.5×104m3/d), and a long-term operational research. During the combined air-water backwashing phase, when the filter layer was in a slightly expanded state, and the ratio of combined air-water backwashing water flushing intensity to individual water flushing intensity (vw/vmf) ranged from 0.40 to 0.60， a strong stripping effect on impurities adhered to the filter medium particles colud be obtained. The results of the production test indicated that individual air flushing intensity could be reduced from 8.8 L/(s·m2) to 6.6 L/(s·m2) during the combined air-water backwashing phase when the vw/vmf was decreased to 0.49. During both the normal temperature period and the low-temperature period, the effluent turbidity of the filter in the optimized production test remained consistently below 0.1 NTU, satisfying the requirements while simultaneously addressing the issue of sand leakage in the filter. In comparison with the original operational plan of the waterworks, the optimized operation scheme had a total water saving rate of 23.2%, and a power saving rate of 49.5%, demonstrating remarkable energy saving effect.
相似文献/References:
[1]肖帆,于宏静,刘小东,等.给水厂V型滤池阀门严密性对滤池运行效果的影响[J].中国给水排水,2020,36(15):41.
XIAO Fan,YU Hong-jing,LIU Xiao-dong,et al.Influence of Valve Tightness on Operation of V-type Filters in Waterworks[J].China Water & Wastewater,2020,36(15):41.
[2]杨华仙.大型老旧水厂V型滤池改造实践[J].中国给水排水,2020,36(20):143.
YANG Hua-xian.Reconstruction Practice of V-type Filter in a Large-scale Old Water Treatment Plant[J].China Water & Wastewater,2020,36(15):143.
[3]常鹏飞,刘兵,韩燕聪,等.邢台市南水北调召马地表水厂工程设计[J].中国给水排水,2021,37(2):61.
CHANG Peng-fei,LIU Bing,HAN Yan-cong,et al.Design of Zhaoma Water Treatment Plant of South-to-North Water Transfer Project in Xingtai City[J].China Water & Wastewater,2021,37(15):61.
[4]肖帆,于宏静,刘小东,等.改善V型滤池跑砂的工程装置设计研究与实践[J].中国给水排水,2022,38(1):53.
XIAO Fan,YU Hong-jing,LIU Xiao-dong,et al.Design and Practice of an Engineering Device for Improving Sand Loss in V?type Filters[J].China Water & Wastewater,2022,38(15):53.
[5]李嘉,施素杰,周志明,等.间歇曝气-反冲洗人工湿地净化性能及微生物作用[J].中国给水排水,2022,38(19):8.
LIJia,SHISu-jie,ZHOUZhi-ming,et al.Performance and Microbial Action of Intermittent Aeration-Backwashing Constructed Wetland[J].China Water & Wastewater,2022,38(15):8.
[6]贠丹丹,梁硕,王艳芝,等.CFD模拟用于深床滤池气水联合反冲洗均匀性研究[J].中国给水排水,2025,41(21):124.
YUNDan-dan,LIANGShuo,WANGYan-zhi,et al.Investigation of Air and Water Distribution Uniformity during Combined Backwashing in a Deep Bed Filter Using CFD Simulation[J].China Water & Wastewater,2025,41(15):124.