摘要
对光稳定、生物难降解的甲拌磷农药废水经ＴｉＯ２ 或负载型ＴｉＯ２ 光催化降解方法处理，化学耗氧量达到排放标准。研究了ｐＨ 值、阴离子种类对降解过程的影响，ｐＨ＜ ２ 或ｐＨ＞ ８ 时，降解率高于５０％ ，催化剂稳定性好；当ＣＯ３２－ 和ＳＯ３２－ 离子质量浓度约为６．０ｍ ｇ／Ｌ时降解率下降２０％ 。
The photocatalytic degradation of phorate in wastewater, which is one of the typical refratory biodegradable and photostable orgaophosphorus pesticides,was studied using TiO 2 partical and loaded TiO 2 on SiO 2 as photocatalysts respectively The results showed that the value of COD was below 200mg/L after the treatment process The effect of pH,anions such as CO 3 2- ,SO 3 2- ,PO 4 2- ,and SO 4 2- on the effciency of the photocatalytic degradation was discussed
出处
《化学工业与工程》
CAS
1999年第6期354-356,366,共4页
Chemical Industry and Engineering
关键词
甲拌磷
有机磷农药
光催化降解
废水处理
农药
phorate, loaded TiO 2 on SiO 2, orgaophosphorus pesticide,photocatalytic degradation,refratory biodegradability
