某制鞋厂生产废水和生活污水处理工程设计.doc
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- 关 键 词:
- 制鞋厂 生产 废水 生活 污水处理 工程设计
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1、摘要面对日益严峻的水资源形势,水资源短缺成为了世界性问题,水在自然界中是不可替代的,但是可以重复利用的资源。污水回用已成为水资源开发和水利用方面的重要课题。随着国内外水污染控制工作者的不断研究,现己开发出越来越多的处理新工艺和不同方式加以组合的再生利用处理工艺。本设计要求处理某制鞋厂2000吨/天的生产废水和生活污水,污水处理后回用。针对污水的水质,本设计采用卡鲁塞尔(Carrousel)2000型氧化沟工艺,不仅去除BOD、COD等有机污染物的效率高,而且还具备一定的脱氮除磷能力,对BOD、COD、N的去除率均达到95。同时该工艺具有工艺流程简单、耐冲击负荷、运行费用低、污泥产量少等优点,大
2、大降低了处理成本。污水回用的深度处理采用砂滤和臭氧消毒法。该砂滤池是一种不设闸阀的滤池;利用虹吸作用可以自动反冲洗,而且不需真空设备控制,运行完全由水力自动控制,实现无动力运行。臭氧消毒法具有杀菌、杀灭病毒的效果好,消毒性能稳定,适应能力强,不产生持久性残余,无二次污染等特点。本工艺利用臭氧接触塔提高气液传质效率及消毒效果,臭氧投加量为3.5mg/L。经过处理后使出水达到CJ/T48-1999生活杂用水水质标准并回用。本设计考虑了节能降耗方面的问题,在达到处理效果的前提下选择了节能的工艺,选用了高效能的设备和装置。以及污水处理后加以回用,使处理成本大大降低。关键词:污水回用,卡鲁塞尔(Carr
3、ousel)2000氧化沟,深度处理,节能AbstractFacing the severe situation on water resource, water resources shortage has become a problem of the whole world. Water is the resource which cant be replaced, while can be reused in the nature. Therefore wastewater reclamation will become a significant means of augmentin
4、g water supply. Wastewater reuse is still in the beginning stage, so its technologies should be widely exploited and developed. This design request processing wastewater volume is 2000m3/d, and reuse treated wastewater. According to the quality of wastewater, Design proposal in Carrousel 2000 oxidat
5、ion ditch, which is particularly effective in removing the organic pollutants, include BOD and COD, but also can remove ammonia nitrogen and phosphorus, the efficiency exceed 95%. At the same time, this process has much advantage, such as simple course, high loading, high efficiency and low capital.
6、 The secondary effluents were fed to an advanced wastewater treatment system, consisting of a sand filter and ozone disinfection. The sand filter hasnt throttle, it can operation by hydraulic power. The advantages of ozone disinfection are that it has the high efficiency on disinfecting harmful bact
7、eria, and leaves no tastes or odors, apparently does not form secondary hazardous compounds. Ozone tower enhances the contact with wastewater and ozone, so as to improve disinfection capacity, by an ozone dosage of 3.5 mg/L. After all the process can produce high quality of water for reuse, and can
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