摘要
化工和制药废水污染物浓度高、毒性大、含盐量高,常规的生物方法对高CODCr、低BOD5、高色度废水进行处理后难以达到排放标准。本文建立了PDO-1型废水处理装置,它由臭氧发生器、高压电晕发生器以及反应器组成。应用该装置对10个化工、制药企业的高浓度有机废水进行了处理,结果显示,CODCr的降解率为10.34%~69.49%,本装置对不同废水的降解效率存在差异。化工制药废水的成分复杂,目前尚不能对某种废水的处理效果进行预测,只能通过小试确定。若O3投加量为50mg·L^-1,吨水处理费用约为3.68元/T废水;设备处理能力若为1-5T.h^-1,则设备总投资为7.6~23万元。本方法主要用于医药、化工高浓度难降解废水或车间分质收集的高浓度废水的预处理,使之有利于后续生化处理和达标排放。
The present paper is aimed at introducing its newly improved method for wastewater treatment from chemical and pharmaceutical plants. As is known, it is more difficult to treat such wastew- ater because it is higher in salinity, toxicity and concentration of toxic compounds. If treated in conventional bio-degenerating method, it is hard to reach the state discharge standard of industrial water pollutants. The method introduced here in the paper, known as POD-1 wastewater treatment apparatus, consists of ozone generator, highvoltage corona generator and reactor. It has been used to deal with high-concentrated organic wastewater from 10 chemical or pharmaceutical plants. The results of the trial application prove that the CODcr degeneration efficiency can be made to be as high as from 10.34% to 69.49% respectively. Although there has been existing a gap between the degradation efflciencies for different kinds of wastewater and it is still uncertain to predict the effects of certain wastewater treatments, it can be made sure to reduce the treatment cost to 3.68 RMB · T^- 1 on the condition that its concentration of ozone could be made to reach 50 mg· L^-1. If the treating capacity of the equipment can attain 1 - 5 T· h^- 1, the total investment for equipment would be 76 000 - 230 000 RMB. Thus, it can be said that the method can be primarily used in the pretreatment of pharmaceutical and chemical industry wastewater where it is collected in high concentration and easier to be made to achieve industrial effluent regulations.
出处
《安全与环境学报》
CAS
CSCD
2007年第2期75-76,共2页
Journal of Safety and Environment
基金
浙江省自然科学基金资助项目(202080)
关键词
水污染防治工程
化工和制药废水
高压电晕
臭氧氧化
water pollution control engineering
chemical and phar- maceutical wastewater
high-voltage pulsed corona
ozonation
