Treatment of wastewater containing phenol and ammonium-nitrogen by novel DHS process.

采用降流式悬挂海绵（DHS）反应器对高盐废水进行了有机物去除和氨氮氧化试验。以高含酚、高含盐氨氮的模拟焦化废水为原料，采用3个相同的DHS反应器串联而成的组合DHS工艺。有机物主要在第一反应器中去除，而几乎所有的铵态氮在随后的反应器中被氧化。作为微生物区系分析的结果，参与硝化的细菌克隆在第2和第3反应器中比在第1反应器中更可检测到，这表明不同的微生物区系沿沿着DHS建立。

Down-flow hanging sponge (DHS) reactor was applied for efficient organic removal and ammonium oxidation of high salinity wastewater. The combined DHS process which was made by connecting three identical DHS reactors in series was fed with an artificial coke-oven wastewater containing a large amount of phenol and ammonium nitrogen with high salinity. Organics were removed mainly in the 1st reactor while almost all of ammonium nitrogen was oxidized in the following reactors. As a result of microflora analysis, bacterial clones involved in nitrification were rather detectable in the 2nd and 3rd reactors than in the 1st reactor, suggesting that different microfloras were established along the DHS.