洗浴废水回用工程间歇运行的影响及控制对策

Influence and Control Strategies of Intermittent Operation of Bathing Wastewater Reuse Project

分析了间歇运行模式对采用生物接触氧化法的洗浴废水回用工程净化效果的影响,并提出了改善间歇运行条件下出水水质的对策。结果表明,间歇运行对洗浴废水回用工程各节点处的水质均产生了不利影响,除COD浓度外,与微生物相关的水质指标如SS、细菌总数、大肠菌群数等均未达到《北京市中水水质标准》;通过加大消毒剂用量至原用量的8倍可以明显改善出水水质,获得优质中水。

The influence of intermittent operation mode on treatment efficiency of bathing wastewater reuse project using biological contact oxidation process was analyzed, and strategies to improve the effluent quality under the intermittent operation were proposed. The result shows that the intermittent operation has adverse effect on the effluent quality from different units of bathing wastewater reuse pro- ject. Except COD, the wastewater quality indexes relative to microorganisms, such as SS, total bacterial count, coliform count do not meet the Standard for Reclaimed Wastewater Quality in Beijing. When the disinfectant dosage is increased up to 8 times of the original dosage, the effluent quality is significantly improved to achieve high quality reclaimed wastewater.