两步发酵处理猪粪工艺的试验研究

本文试验采用厌氧污泥床过滤器,中温处理猪粪两步发酵新工艺。其设备为二个100升的敞口酸化罐;一个100升密闭的产甲烷罐,内部装有三相分离器和毛刷填料。经过三年的运行结果表明,甲烷罐的平均池容产气率为2.5—2.7m³/m³·d,有机物去除效果明显,COD去除率平均达到76.2％。本系统操作方便,可控性能好,耐冲击能力强,是一种高效处理牲畜粪便行之有效的方法。

THE EXPERIMENTAL RESEARCH OF THE TWO-STAGE FERMENTATION TECHNIQUE FOR TREATING PIG DUNG

This is an experiment using a new two-stage fermentation technique to treat pig dung in an anaerobic sludge-bed filter at medium temperatrue. Two 100-litre uncovered acidizing containers and one 100-litre sealed methane-producing container are used for this experi-ment.In the methane-producing container, a three-phase separator and brushes used as fillers are installed inside the container.After three years'operation, the results show that the average gas-producing rate of the methane container in volume is 2.5-2.7 m³/ m³ · d. The results of removing organic matters are obvious. The average COD remove rate reached 76.2%.This system is rather convenient to operate. The control effect is good. It resists strong forces created by shock. This is an effective method for treating animal dungs.