规模化猪场粪污处理及资源化利用工程应用

THE APPLICATION OF WASTEWATER TREATMENT AND RESOURCE UTILIZATION IN LARGE-SCALE PIGGERY

针对规模化猪场粪污特点，以实际工程为例，介绍了“干湿分离，生物制肥，厌氧＋A。／0＋uF＋光催化组合工艺处理废水”的设计及其运行情况。结果表明：该工艺对废水中COD、BOD，、TP和NH，-N去除率分别达98．75％、98．34％、96．67％和95．21％，出水水质能够稳定在P（COD）为63．2～82．32mg／L、P（BOD5）为31．2—43．2mg／L、p（TP）为1．5．2．5mg／L、p（NH3-N）为11．2～18．4mg／L。出水水质满足GB5084--2005《农田灌溉水质标准》，处理后的水可全部用于厂区农业灌溉；生物制肥工艺运行稳定，年产有机肥2600t，利润50余万元。粪污治理工程综合效益好，可供同类工程参考。

For the characteristics of large-scale piggery wastewater, taking an actual project for example, it is introduced the design and operation of the separation of dry and wet, biological fertilizer production, anaerobic ＋ A2/O ＋ UF membrane ＋ photo catalysis technology. The application results show that the treating effect of this process is excellent. In this system, the effluent removal rate of COD, BODs, TP and NH3-N was 98.75% , 98.34% , 96. 67% and 95.21% , respectively. After being treated by the combined process the effluent quality can be stable in COD 63.2 - 82. 32 mg/L, BOD5 31.2 - 43.2 mg/ L, TP 1.5 -2.5 mg/L, NH3-N 11.2 - 18.4 mg/L. The effluent can meet ＂Irrigation Water Quality Standards of Farmland＂ （ GB 5084 -2005） , all of the treated water is used for agricultural irrigation in factory area. The technology of Biological fertilizer production has stable operation. The annual output of organic fertilizer is 2600 tons and profit is more than 0.5 million yuan. The overall benefit of treating of fecal matter and sewage is clear. This process can be used as a reference for similar projects.