摘要
以硝化菌增长的Ｈａｌｄａｎｅ模式为基础，通过理论分析证明，完全混合式活性污泥反应器是碳氧化（ＣＯＤ降解）和ＮＨ３—Ｎ硝化合并处理工艺的最佳反应器，给出了曝气池ＮＨ３—Ｎ的最佳浓度（７．４ｍｇ／Ｌ）．在此基础上，采用单级活性污泥法处理同时含有ＣＯＤ３５０—４００ｍｇ几和ＮＨ３—Ｎ１５０ｍｇ／Ｌ的树脂生产废水，结果表明：当控制水力停留时间（ＨＲＴ）为８ｈ时，ＮＨ３—Ｎ的硝化率和ＣＯＤ去除率分别为９０％和６５％，将ＨＲＴ延长至１０ｈ，ＮＨ３—Ｎ可完全硝化，而ＣＯＤ的去除率并不降低。
On the basis of Haldane nitrifier growth model,it is confirmed theoritically that the completely-mixed activated sludge reactor can be the optimum one for simultaneous carbonaceous oxidation (COD degradation ) and ammonium nitrification. The optimum NH3-N concentration (7.4 mg/L) in the aeration tank is also given. A laboratory scale experiment using synthetic resin production wastewater which 350-400 mg/L COD and 180 mg/L NH3-N are contained is conducted. The results show that ammonium nitrification rate and COD removal efficiency can reach 90% and 65% respectively, in a single activated sludge process when hydraulic retention time (HRT) is controlled at 8h. Ammonium can be completely nitrified with HRT 10h. whereas COD removal efficiency can be maintained unchanging.
关键词
高氨废水
碳氧化
生物硝化
处理
activated sludge treatment, nitrifying bacteria/high ammonium wastewAter
carbonaeous oxidation
