生物吸附强化一级处理中添加蛭石填料的试验

Study on Application Vermiculite Filling on Intensifying Primary Domestic Wastewater Treatment by Bioflocculation-Adsorption

实验研究了蛭石填料在生物吸附强化一级处理中的作用,并对处理工艺的影响因素进行了分析。试验结果表明, 投加蛭石填料后,不影响系统对有机物及悬浮颗粒物的去除。生物絮凝吸附在30 min时达到最大,污泥再生曝气时间以2 h较适合。应用了蛭石填料的处理系统的氨氮去除性能得到显著提高,氨氮的去除率比对照组高30%以上。

This paper introduces a new filling of vermiculitea and researches the effect of vermiculite on intensifying primary domestic wastewater treatment and analyzes some factors impacting treatment system. Experimental results demonstrates that the system has normal removal efficiency on organism and suspend solid. It also shows that the suitable times for bioflocculation-adsorption and sludge aeration are 30 min and 2 h. The results show that the vermiculite-system have better ammon-nitrogen removal rate than ordinary system, about 20%~30%.