Fe/C微电解和Fenton氧化预处理猪场沼液的对比研究  

Comparative Study on Fe/C Microelectrolysis and Fenton Oxidation Pretreatment of Swine Biogas Slurry

作　　者：聂丽君[1] 周如金[1] 邱松山[1] 杨建恒 李富强 龚衍河 黄梅[1] 叶芳芳 钟华文[1] 

机构地区：[1]广东石油化工学院,广东茂名525000

出　　处：《广东石油化工学院学报》2017年第6期15-18,22,共5页Journal of Guangdong University of Petrochemical Technology

基　　金：广东省自然科学基金项目(2014A030307019);广东省科技计划项目(2014A020223008;2017A030223010);广东省教育厅自然科学特色创新项目(2016KTSCX088);茂名市科技计划项目(2014041;2014012)

摘　　要：以猪场厌氧后沼液为研究对象,考察了Fe/C微电解和Fenton氧化两种方法的预处理效果。实验表明,Fe/C微电解和Fenton氧化对沼液的COD和氨氮均有较明显的去除效果,Fe/C微电解在pH为3.0~3.5,反应时间为3.0 h的条件下,COD和氨氮的去除率分别为71%和52%;Fenton氧化在pH为3.0~3.5,150 mL污水加入质量分数为30%的H_2O_21 mL和质量分数为10%的硫酸亚铁溶液2 mL的条件下,COD和氨氮的去除率分别为78%和57%,略优于Fe/C微电解的预处理效果。在优先考虑Fenton氧化法对猪场沼液进行预处理的情况下,处理后出水COD和氨氮质量浓度由原来的520,280mg/L分别降至114,120 mg/L。In this study, the anaerobic digestion slurry of piggery is studied to investigate the pretreatment effects of two methods, Fe/C mi-cro electrolysis and Fenton oxidation. The experimental results show that the two methods of Fe/C micro electrolysis and Fenton oxidation have obvious removal effect on COD and ammonia nitrogen of biogas slurry. In Fe/C micro electrolysis, the removal rate of COD and ammo-nia nitrogen is 71 % and 52% respectively under the condition of pH value of 3.0 ~ 3 .5 and reaction time of 3 h. In Fenton oxidation, when 1 mL 30% H202 and 2 mL 10% ferrous sulfate solution is respectively added to 150 mL wastewater （the dosage of 30% H202 is 0. 17 % , and the dosage of ferrous sulfate is 0.33 mg/L）, the removal rate of COD and ammonia nitrogen is 78% and 57 % respectively under the condition of pH value of 3 .0 ~ 3.5, slightly better than the pretreatment effect of Fe/C micro electrolysis. In the case of pretreatment for swine biogas slurry with Fenton oxidation method, the effluent COD and ammonia nitrogen is 114 mg/L and 120 mg/L respectively, which provides a good basis for biochemical treatment for reuse.

关 键 词：猪场沼液 FE/C微电解 FENTON氧化 预处理 

分 类 号：X713[环境科学与工程—环境工程]