水解酸化-磷酸铵镁法-EGSB组合工艺处理大豆蛋白废水  

Treatment of soy protein wastewater by hydrolysis acidification-magnesium ammonium phosphate precipitation-EGSB process

作　　者：汪林[1,2] 代鹏飞 张炜铭[1,2] 常毅 吕路[1,2] 徐敬生 杜倩 石家杰 WANG Lin DAI Pengfei ZHANG Weiming CHANG Yi LYU Lu XU Jingsheng DU Qian SHI Jiajie(State Key Laboratory of Pollution Control ＆ Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China State Environmental Protection Engineering Center for Organie Chemical Industrial Waste Water Disposal and Resourees Reuse, Jiangsu NJU Environmental Technology Co., Ltd, Nanjing 210046, China)

机构地区：[1]污染控制与资源化研究国家重点实验室南京大学环境学院,南京210093 [2]国家环境保护有机化工废水处理与资源化工程技术中心江苏南大环保科技有限公司,南京210046

出　　处：《环境工程学报》2016年第11期6179-6184,共6页Chinese Journal of Environmental Engineering

基　　金：江苏省博士后科研资助计划项目(1501128C);江苏省环保厅2015年度省级专项;江苏省重点研发计划(产业前瞻与共性关键技术)项目(BE2015175)

摘　　要：采用水解酸化-磷酸铵镁(MAP)法-EGSB组合工艺对大豆蛋白废水进行处理,考察了水解酸化系统运行效果,并对其运行参数进行优化;提出MAP法对高浓度氨氮废水的处理方法,并评选其处理高浓度氨氮废水的适宜条件。结果表明,水解酸化系统运行稳定,最适pH为7.0,最佳水力停留时间为12h,氨氮转化率高达95.8%;MAP法处理高浓度氨氮废水的优选条件为n(Mg):n(N):n(P)=1:1:0.8,此条件下氨氮去除率为88.3%,磷酸去除率为76.7%;EGSB反应器经过三个月的启动后可稳定运行,有机负荷高达到9.88 kg·(m^3·d)^(-1),COD去除率达到90.0%左右。水解酸化-MAPEGSB组合工艺在处理大豆蛋白废水时可获得连续稳定的处理效果,为大豆蛋白废水处理的工程化提供了基础依据。A hydrolysis acidification-magnesium ammonium phosphate precipitation（MAP）-EGSB process was conducted to treat soy protein wastewater.The running effects of hydrolysis acidification were studied and its operational parameters were optimized.A MAP unit was proposed for the treatment of the high-concentration NH_4~＋-N wastewater and optimal conditions were investigated experimentally.The results showed that hydrolytic acidification ran steadily.At the optimal HRT of 12 h and pH of 7.0,NH_4~＋-N conversion rate reached 95.8%.The optimum MAP operational conditions for treating the high-concentration NH_4~＋-N wastewater were：n（Mg）：n（N）：n（P）=1：1：0.8.Under this condition,the removal efficiencies of NH_4~＋-N and phosphate were 88.3%and76.7%,respectively.The EGSB anaerobic reactor was started successfully,after approximately three months of testing.The organic load was 9.88 kg·（m^3·d）^（-1） and COD removal rate was 90.0%.Continuous and steady treatment effects can be achieved when using this process for treating soy protein wastewater.This study provides fundamental baseline results for engineering applications in the treatment of soy protein wastewater.

关 键 词：大豆蛋白废水 水解酸化 磷酸铵镁 厌氧反应 

分 类 号：X52[环境科学与工程—环境工程]