人工强化生态滤床对北方生活污水净化效果的研究

Research on Purification of Domestic Sewage by Artificially Strengthened Ecological Filter Bed in North China

人工强化生态滤床是根据接触氧化滤池及人工湿地净化机理耦合建立的一种创新型污水处理技术。通过试验室装置小试,考察了跌水曝气复氧、滤料种类、滤料堵塞等因素对人工生态滤床运行效果的影响。结果表明,跌水曝气复氧预处理效果明显,能够满足人工强化生态滤床复氧量要求;通过对火山滤料和砾石滤料净化效果分析可知,火山滤料出水水质明显优于砾石滤料出水水质。人工强化生态滤床技术在北方污水处理方面具有运行费用低,出水水质好等优点,具有很好的推广价值。

Artificially strengthened filter bed is an innovative wastewater treatment technology based on the coupling of eco-contact oxidation filters and artificial wetlands purification mechanism. By small scale laboratory equipment, the effects of drop reaeration, filter type, filter clogging and other ecological factors on the operation effect of artificial filter bed were studied. As indicated by the results, the pretreatment of drop reaeration had obvious effect and could satisfy the oxygen requirements of artificially strengthened ecological filter bed. Through the analysis on the purification results of volcanic and gravel filter, the effluent quality of volcanic filter was better than that of gravel filter. With the advantages of low operations costs and good effluent quality, the artificially strengthened ecological filter bed has great value to be popularized in North China.