规模化养猪场粪污综合处理的试验研究

Test study on integrated treatment of manure and wastewater for large scale pig farm

该文应用“厌氧发酵+延时曝气活性污泥法”处理工艺并辅以投加生物制剂等措施对猪场粪污进行处理。试验结果表明,经过该工艺处理后,猪粪中的蛔虫卵死亡率达到99%,大肠杆菌为零(未检出),除有机碳外,其余营养元素基本没有损失,完全达到了《畜禽养殖业污染物排放标准》(GB18596—2001)规定的畜禽养殖业废渣无害化环境标准要求;CODC r、BOD5、SS和NH3-N的去除率分别达到96.7%、98.6%、99.5%和99.4%的较高水平,处理水达到了《污水综合排放标准》(GB8978—1996)的二级标准。

In the present paper, the anaerobic fermentation plus time delay aeration activated sludge method, together with the measure of putting in living beings was used to treat the manure and wastewater on large scale pig farm. The experimental results showed that by the treatment process, the death rate of helminthic was up to 99%, colon bacillus were not detected, the nutritional elements except for organic carbon were not lost. The manure treated reaches the environmental harmless standard requirement of scum in livestock and poultry breeding which is regulated in Discharge Standard of Pollutants for Livestock and Poultry Breeding （GB18596--2001）. The removal ratios of CODCr, BOD5, SS and NH3-N separately reached high levels of 96. 7%, 98.6%, 99.5% and 99.4%. The treated wastewater can reach the Ⅱ series standard of Integrated Wastewater Discharge Standard（GB8978--1996）.