摘要
研究了对位酯生产废水的初步处理方案。先将对位酯废水进行中和、冷冻除盐、加CaO沉淀、过滤等预处理(预处理后COD 40 352 mg/L;SO24-9 577 mg/L;NH3-N21 mg/L),再采用纳米光催化降解以及BaCl2进行处理,TiO2浓度为2 g/L时处理效果较好(COD 30 325 mg/L;SO24-880 mg/L;NH3-N140 mg/L)。废水经铁炭微电解及CaO处理后,再进行光催化降解可以达到更好的处理效果,COD降为21 224 mg/L。废水经微电解、Fenton氧化和光催化联用处理后,COD降为20 800 mg/L。
Some initial treatment techniques for industrial wastewater from para-ester production were investigated. Some pretreatment steps such as neutralization, desalination with freeze, precipitation by adding CaO, filtration were used to treat the para-ester wastewater （after pretreatment COD 40 352 mg/L; SO4^2- 9 577 mg/L; NH3-N 21 mg/L） , then photocatalytic degradation and deposition with BaCl2 were used. When TiO2 concentration was 2 g/L, the better treatment results were observed （COD 30 325 mg/L; SO4^2- 880 mg/L; NH3-N 140 mg/L）. Alternatively, after the treatment of iron, charcoal, CaO and photocatalysis degradation process, the more effective results （COD 21 224 mg/L） were obtained. After the combined process of minute electrolysis, Fenton＇ s oxidation and photocatalysis degradation, the value of COD was further decreased to 20 800 mg/L.
出处
《环境工程学报》
CAS
CSCD
北大核心
2008年第2期185-188,共4页
Chinese Journal of Environmental Engineering
基金
天津市自然科学基金资助项目(033604711)
关键词
对位酯
光催化降解
微电解
二氧化钛
para-ester
photocatalytic degradation
minute electrolysis
titanium dioxide
