摘要
天津市凌庄水厂现有净水系统设计规模为50×10^(4)m^(3)/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(30×10^(4)m^(3)/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。
The present treatment capacity of Tianjin Lingzhuang waterworks is 50×10^(4) m^(3)/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, PULSAZUR■ and pressure short process UF membrane was determined to be the newly-built purification system(30×10^(4) m^(3)/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.
作者
赵新娟
刘伯一
ZHAO Xin-juan;LIU Bo-yi(Tianjin Huamiao Water&Wastewater Research&Design Institute Co.Ltd.,Tianjin 300190,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2021年第10期71-74,共4页
China Water & Wastewater
作者简介
赵新娟(1978-),女,天津人,本科,高级工程师,所总工,主要从事市政给排水工程设计工作。E-mail:hmrbgd@126.com。
