Research on DAF-BAF process in textile wastewater treatment

This experiment researches textile wastewater, adopts a BAF process that has developed quickly in recent years, and makes use of dissolved air flotation as a pretreatment process that can effectively make up for BAF‘ s lack of removing Chromaticity color. Performance effect, influencing factor, control condition have been reviewed and parameters of correlation have been analyzed in this experiment. The experiment and actual performance resuhs indicate that this process is an effective way to remove the COD, suspended solid and colority with the value of 100 rag/L, 50 mg/L and 70 multiple respectively. The effluent meets the requirement of the standards of national sewage discharge. This process features a simple schematic, small location, continuous,reliable performance, strong shock and loading resistance and easy operation. Experimental data can provide scientific evidence and technical support for engineering practice of this process.     

DO作为SBR法控制参数的应用研究

为解决SBR法在中小型污水厂污水处理工艺中普遍存在的操作繁琐、不易控制的缺点,以实际工程为基础,分别考察了不同曝气量、不同反应初始有机物浓度和MLSS运行情况下DO的变化情况,均发现DO曲线在反应阶段的末期存在突跃,并随之稳定在一高值区．根据这一现象,在预定最大反应时间基础上,采用DO作为反应时间和反应阶段的控制参数．运行结果表明,该控制方法在保证出水达标的前提下可以节约能耗、降低运行成本．     

截流式合流制排水系统溢流井的改进

在将直排式合流制排水系统改造成截流式合流制排水系统的过程中，对简单溢流井进行了改进，由此改善了溢流井的水流状态，降低了混合污水浓度且减少了污水的排放量，并最终减少了截流式合流制排水系统溢流污水对水体的污染，同时为系统的维修、养护、管理以及实现微机自动控制创造了良好条件。