规模化猪场养殖废水UASB-SFSBR-MAP处理工艺中试研究  

Effect of Pilot UASB-SFSBR-MAP Process for the Large Scale Swine Wastewater Treatment

作　　者：王亮[1,2] 陈重军[1] 陈英旭[2,3] 吴伟祥[1,3] 

机构地区：[1]浙江大学环境与资源学院,杭州310058 [2]浙江大学水环境研究院,杭州310058 [3]农业部面源污染控制重点开放实验室,杭州310058

出　　处：《环境科学》2013年第3期979-985,共7页Environmental Science

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07101012-03)

摘　　要：针对规模化猪场养殖废水常规厌氧-好氧组合处理工艺及SBR处理工艺脱氮效率低、运行费用高、养分流失大等技术难题,提出了养殖废水"UASB-SFSBR(分步进水序批式反应器)-MAP(磷酸铵镁结晶)"处理工艺,并开展了中试工程研究.结果表明,UASB-SFSBR-MAP处理工艺对COD、NH4+-N和TP的去除率分别达到95.1%、92.7%和88.8%,MAP氮磷回收率达23.9%和83.8%.工艺出水水质COD≤135 mg·L-1、TN<116 mg·L-1、NH4+-N<43 mg·L-1、TP≤7.3 mg·L-1、SS≤50mg·L-1,各项指标优于《畜禽养殖业污染物排放标准》(GB 18596-2001).该处理工艺稳定可靠,生物脱氮过程保持系统碳源碱度自平衡,实现碳氮磷高效处理和回收,处理费用与传统厌氧-好氧处理工艺相当.因此,UASB-SFSBR-MAP组合处理工艺具有较高的推广应用价值,适合我国规模化猪场养殖废水的达标处理.In this paper, a treatment process consisted of UASB, step-fed sequencing batch reactor （SFSBR） and magnesium ammonium phosphate precipitation reactor （MAP） was built to treat the large scale swine wastewater, which aimed at overcoming drawbacks of conventional anaerobic-aerobic treatment process and SBR treatment process, such as the low denitrification efficiency, high operating costs and high nutrient losses and so on. Based on the treatment process, a pilot engineering was constructed. It was concluded from the experiment results that the removal efficiency of COD, NH4＋ -N and TP reached 95.1%, 92. 7% and 88.8% , the recovery rate of NH4＋-N and TP by MAP process reached 23.9% and 83.8% , the effluent quality was superior to the discharge standard of pollutants for livestock and poultry breeding （GB 18596-2001 ）, mass concentration of COD, TN, NH4＋ -N, TP and SS were not higher than 135, 116, 43, 7.3 and 50 mg·L-1 respectively. The process developed was reliable, kept self-balance of carbon source and alkalinity, reached high nutrient recovery efficiency. And the operating cost was equal to that of the traditional anaerobic- aerobic treatment process. So the treatment process could provide a high value of application and dissemination and be fit for the treatment of the large scale swine wastewater in China.

关 键 词：猪场养殖废水 脱氮 除磷 SFSBR MAP 结晶 回收 

分 类 号：X713[环境科学与工程—环境工程]