摘要
对处理后的污水在贮存期间的水质变化进行了研究。试验结果表明,在污水贮存期间,BOD5、CODCr和SS等水质指标的浓度持续下降,总凯氏氮和pH值变化不大,硫化物和粪大肠菌群明显升高且15d后大于农田灌溉标准。在平均气温(32℃)较高的夏季,安全贮存期大约为15d。
The changes of treated wastewater quality during the storage were investigated. The experimental results showed that, during the wastewater storage, the concentrations of BOD5, CODCr and SS decreased continuously, the concentration of total Kjeldahl nitrogen and pH values fluctuated mildly, however, the concentration of sulfide and fecal coliform numbers ascended rapidly and exceeded the standards for irrigation water quality after 15 days. In summer with high average temperature（32℃）, the period for safe storage of wastewater was about 15 d.
出处
《工业用水与废水》
CAS
2007年第6期20-21,30,共3页
Industrial Water & Wastewater
基金
国家自然科学基金项目(No.90511003)
中国科学院百人计划(2004)
甘肃省重点科技攻关项目(JS002-A52-020)
关键词
污水
贮存
水质变化
灌溉
wastewater
storage
changes of water quality
irrigation
