| 浸没式超滤工艺在双阀滤池水厂改造中的应用 |
| 作者：高蕴宬 |
| 单位： 唐山市自来水有限公司， 唐山 063000 |
| 关键词： 双阀滤池改造； 工艺升级； 浸没式超滤； 应用； 净水厂 |
| DOI号： 10.16159/j.cnki.issn1007-8924.2025.05.017 |
| 分类号： TQ028；TU991.2 |
| 出版年,卷(期):页码： 2025,45(5):172-180 |
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摘要： |
| 传统滤池已成为水厂净水能力进一步提升的瓶颈，亟待工艺升级，随着过滤技术的发展，具有明显优势的超滤膜技术在国内饮用水处理方面得到越来越多的应用。针对传统双阀滤池存在的滤池窜水、反冲洗效率低、耐冲击能力差等问题，以唐山市自来水公司净水厂一期改造工程为例，使用浸没式超滤膜池，将设计规模为12.5万m3/d的双阀滤池改造为虹吸式膜系统，无需对原滤池的主体土建结构做改造。通过改造可有效提高产水量，系统集成化程度高，布局紧凑，稳定性强，产水浊度稳定低于0.1 NTU，平均产水率达95%。研究表明：利用膜池与清水池高度差实现虹吸驱动，相比负压抽吸式浸没式超滤系统，吨水电耗节省约90%；优化恢复性清洗药剂浓度（次氯酸钠1 000 mg/L、柠檬酸5 000 mg/L）后，药剂成本较传统方法降低50%；通过调整反冲洗程序与设备维护策略，系统运行能耗减少35%。实际运行后产水成本较改造前仅增加0.08~0.15元/m3，为同类型水厂工艺升级提供了低成本、高稳定性的技术参考。 |
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In the process of water plant, the traditional filter has become the bottleneck of further improving the water purification capacity. It is urgent to upgrade the process. With the development of filtration technology, ultrafiltration membrane technology with obvious advantages has been more and more applied in domestic drinking water treatment. In view of the problems existing in the traditional double-valve filter tank, such as water channeling, low backwashing efficiency and poor impact resistance, taking the phase Ⅰ renovation project of the water purification plant of Tangshan Water Supply Company as an example, the immersion ultrafiltration membrane tank was used to transform the double-valve filter tank with a design scale of 125 000 m3/d into a siphon membrane system, without the need to transform the main civil structure of the original filter tank. The transformation could effectively improve the water production, the system had a high degree of integration, compact layout, strong stability, and water production turbidity was stable below 0.1 NTU, and the average water production rate was 95%. The results showed that by using the height difference between the membrane tank and the clear water tank to achieve siphonic drive, compared with the negative pressure suction and immersion ultrafiltration system, the electricity consumption per ton of water could be saved by approximately 90%. After optimizing the concentration of restorative cleaning agent (sodium hypochlorite 1 000 mg/L, citric acid 5 000 mg/L), the cost of the agent was reduced by 50% compared with the traditional method. By adjusting the backwash procedure and equipment maintenance strategy, the operation energy consumption of the system was reduced by 35%. After the transformation, the actual operation cost of water production only increased by 0.08~0.15 CNY/m3, which provides a technical reference of low cost and high stability for the process upgrading of the same type of water plant. |
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基金项目： |
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作者简介： |
| 高蕴宬（1982-），男，天津人，工程师,主要研究方向为饮用水处理，E-mail：59381165@qq.com |
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参考文献： |
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