ZHAO Xin-juan,LIU Bo-yi.Application of Short Process Ultrafiltration Membrane in Lingzhuang Waterworks[J].China Water & Wastewater,2021,37(10):71-74.
短流程超滤膜工艺在凌庄水厂的应用
- Title:
- Application of Short Process Ultrafiltration Membrane in Lingzhuang Waterworks
- 关键词:
- 自来水厂; 压力式膜处理工艺; 上向流炭吸附反应澄清池
- Keywords:
-
waterworks; pressure membrane process; PULSAZUR
![](KeySearch.aspx?type=KeyWord&Sel=PULSAZUR<img src="http://zggsps.paperonce.org/Upload/Park/bf73d7d9-a3d4-4a9f-aaed-72b9b46433b1.jpg" />)
- 摘要:
-
天津市凌庄水厂现有净水系统设计规模为50×104 m3/d，处理工艺为反应沉淀+普通快滤池，为了达到出厂水量和水质要求，亟需改造。通过对各种沉淀澄清池进行技术经济比较，对国内外大型水厂膜组合工艺进行分析对比，以及邀请多家超滤膜公司进行中试，确定了凌庄水厂新建净水系统（30×104 m3/d）采用预处理、PULSAZUR上向流炭吸附反应澄清池与压力式超滤膜短流程处理工艺。该工艺可有效应对以南水北调中线原水为主水源、引滦原水为备用水源的原水水质。该净水系统较国内已建成压力式超滤膜工艺缩短了工艺流程、降低了建设投资，且可根据原水水质确定预氧化剂和粉末活性炭的投加，从而降低运行成本。实际运行表明，该工艺可以保证出厂水浊度＜0.1 NTU，耗氧量＜2 mg/L，有效保障了出厂水的化学安全性和生物安全性。
- Abstract:
-
The present treatment capacity of Tianjin Lingzhuang waterworks is 50×104 m3/d, and the treatment process includes reactive precipitation and conventional rapid filter. In order to meet the requirements of quantity and quality of product water, Lingzhuang waterworks is in urgent need of renovation. Through technical and economic comparison of various sedimentation tanks and clarifiers, analysis and comparison of combined membrane processes in large waterworks at home and abroad, and pilot tests carried out by many ultrafiltration (UF) membrane companies, the process of pretreatment, PULSAZURand pressure short process UF membrane was determined to be the newly-built purification system (30×104 m3/d) in Lingzhuang waterworks. This process could effectively deal with the raw water from Middle Route of the South-to-North Water Diversion as the main water source and the raw water from Luanhe River as the alternate water source. Compared with the existing domestic pressure ultrafiltration membrane waterworks, the new system shortened the process flow and reduced the construction investment. In addition, the combined process could determine the dosage of pre-oxidant and powder activated carbon (PAC) by analyzing the raw water quality, which could significantly decrease the operational cost. According to the practical operation data, turbidity and CODMn in product water of the combined process were always less than 0.1 NTU and 2 mg/L, respectively, indicating that the combined process can effectively ensure the chemical and biological safety of the product water.
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