混凝沉降法及Fenton氧化法预处理脱模剂废水的研究  

The research of wastewater pretreatment of release agent by the coagulation and the Fenton oxidation methods

作　　者：宗刚[1] 白笑晨[1] 曹鹏华[1] 

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《西安工程大学学报》2013年第3期349-353,共5页Journal of Xi’an Polytechnic University

摘　　要：分别采用混凝法和Fenton氧化法对齿轮生产车间脱模剂废水进行预处理,旨在降低其COD浓度,提高其可生化性,为后续生化处理做铺垫.混凝法使用FeCl3、PAC和复合混凝剂进行实验,经各项参数比对得出,在PAC投加量为1 400mg/L,原水pH调至7.0,沉淀时间为40min时,废水的COD去除率最高,可达96.8%.通过Fenton氧化实验得出,在H2O2投加量为6.6g/L,H2O2/Fe2+为10,原水pH调至3.0,反应时间为60min时,处理效果最好,COD去除率为88.4%.可见对于此类废水,在最佳条件下,选用混凝法处理效果更佳.The coagulation methods and the Fenton oxidation were used to deal the wastewater which came from the release agent of the gear production process. The experiment is aimed at removing the COD concentration, improve the biodegradability of the wastewater and laying the groundwork for fol- low-up biochemical treatment. In the coagulation part, use the FeC13, PAC and composite coagulant, contrast is drawn by the various parameters that when the dosage of PAC is i 400mg/L, the pH of raw water is adjusted to 7.0, the precipitation time is 40rain, the removal efficiency of COD is highest which / can reach 96.8%. The conclusion comes from the Fenton oxidation is that when the dosage of H202 is 6.6g/L, H20_2/Fe2＋is 10, the pH of raw wastewatei- is 3.0, the reaction time is 60min, the best effect of the removal efficiency of COD could reach 88.4%. It can clearly be seen that for such wastewater use the coagulation processing which under the optimal conditions is the better choice.

关 键 词：混凝 FENTON氧化 脱模剂 废水预处理 

分 类 号：X131.2[环境科学与工程—环境科学]