摘要
针对制药废水具有COD、总磷、氯离子、pH高,可生化性差的特点,通过调整废水初始pH值为7、8、9,分别在曝气和厌氧条件下考察了铁内电解法对废水COD、TP、Cl-的预处理效果,同时分析了反应前后废水pH值的变化。结果表明,曝气铁内电解法在相同条件下处理效果优于厌氧铁内电解法。pH=7时曝气铁内电解法的综合处理效果最好,COD的去除率达到32.8%,TP去除率为26.5%,Cl-去除率为11.5%。试验出水pH呈上升趋势,但曝气铁内电解法较厌氧铁内电解法对pH变化的缓冲能力好,因此利用曝气铁内电解法在pH=7时预处理该制药废水是一种可行方案。
Pharmaceutical wastewater is one of the refractory wastewater with high concentration of COD, TP, Cl^-, pH and low biodegradability. In this paper, the original pH value ofwastewater was adjusted to 7, 8, 9 respectively, and then the removal efficiency of COD, TP, CI by iron internal electrolysis process was investigated under aerobic and anaerobic conditions. In addition, the pH value change before and after the reaction was analyzed .The result showed that aeration iron internal electrolysis process was better in treating this kind of wastewater than anaeration iron internal electrolysis process, The best removal efficiency was obtained under the original pH value of 7, that resulted in the 32.8% for the COD, 26.5% TP, and 11.5% Cl^- removal. The pH value of effluent increased in both processes but better buffer capacity of pH was discovered in aeration iron internal electrolysis process. So it is concluded that the pre-treatment of pharmaceutical wastewater by iron internal electrolysis process under aeration with a original pH value of 7 is a feasible way.
出处
《水处理技术》
CAS
CSCD
北大核心
2008年第11期54-56,60,共4页
Technology of Water Treatment
基金
江苏省科技成果转化专项资金(BA2007099)
关键词
铁内电解法
制药废水
Cl^-去除
绿锈
iron internal electrolysis process
pharmaceutical wastewater
Cl^- removal
green rust
