臭氧——活性炭在净水厂设计中若干问题的探讨

Probe into some problems of the process of ozone-activated carbon in water treatment plant design

臭氧—活性炭吸附工艺是目前常用的深度处理技术,臭氧预氧化和粉末活性炭投加措施也是应对微污染原水的有效处理措施。臭氧发生器作为深度处理技术的核心设备,如何合理经济选择氧源系统,科学确定臭氧发生器设备台数,明确设备的各种技术参数,使臭氧系统能够灵活适应各种运行工况和环境条件,是招标工作中需要密切关注的问题。臭氧—活性炭系统的防火防爆措施如何满足安全和消防部门的要求、活性炭吸附池池型对反冲洗效果的影响、系统管道及附件和臭氧接触池的防腐措施等关键因素在设计过程中容易被忽视。通过对近年来相关给水深度处理技术文献资料的归纳整理和综合分析,并结合近年来净水厂深度处理工程的设计体会和经验,提出了臭氧—活性炭技术在水厂设计应用中容易忽视的问题,并对适宜的解决方案进行了探讨。

Ozone oxidation and activated carbon adsorption process is currently used advanced treatment technology, effective treatment measures of ozone preoxidation and powdered activated carbon dosing measures also deal with organic micro polluted raw water. The ozone generator as the core equipment of advanced treatment technology, how to choose reasonable economic source of oxygen system, scientifically determine the amount of ozone generator equipments, determine the various technical parameters, make the ozone system can be flexibly adapt to various working con- ditions and environmental conditions, was paid close attention to the problem need in biddingwork. The key factors to the prevention of fire and explosion of ozone activated carbon system meetthe safety and the requirements of the fire department, the type of activated carbon adsorption tankinfluence on the effect of backwash, piping and accessories and ozone contact tank anticorrosionmeasures easily overlooked in the design process. Based on the advanced water treatment technolo-gy related literature published in recent years are summed up and analyzed, combined with the re-cent waterworks advanced treatment project design experience and experience, the ozone activatedcarbon technology in the design and application in water treatment plant easily neglected problemswere put forward, and appropriate solutions were discussed.