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提出了以厌氧—好氧活性污泥法进行二级处理,以气浮充氧—好气滤池进行深度净化的城市污水再生全流程。其特点是:生化反应池污泥不膨胀,操作方便运行稳定;深度净化中将物化与生化作用相结合,不但能有效地去除悬浮颗粒,而且能进一步去除溶解性有机物。该流程大幅度地提高了再生水质,与传统流程相比,深度净化水水质改善率CODCr、BOD5为10~30%,SS、色度为20%,大肠菌值为90%。
A complete process of municipal wastewater reprocessing using an anaerobic-aerobic activated sludge process for secondary treatment and an air flotation and oxygenation-aerobic filter for deep purification was proposed. Its characteristics are: the biochemical reaction tank sludge does not swell, the operation is convenient and stable; the deep purification combines the physicochemical and biochemical actions, and can not only effectively remove the suspended particles, but also can further remove the dissolved organic matter. The process greatly improved the water quality of the reclaimed water. Compared with the traditional process, the CODCr and BOD5 of the deep purified water improved by 10% to 30%, the SS, the chromaticity was 20%, and the coliform value was 90%.