徐越群 冯婧 冯博 何卫卫

摘 要：南水北调东线总干渠沿线农村生活污水直排入河使部分流域水质恶化，严重影响了生态环境。为此必须从源头上对农村生活污水采取经济可行的处理措施，针对厌氧反应器因沼气产量不足而导致内循环不能正常进行的问题，采取强制内循环反应器，以氮气为内循环动力，以普通厌氧反应器颗粒污泥为接种污泥，对生活污水进行处理。结果表明：强制内循环厌氧反应器对COD具有较高的去除率，反应器中的混合液因强制内循环的作用而使有机物降解更加充分;产酸菌的作用使反应器对进水pH值具有中和作用，废水pH值变化对处理效果影响较小。

关键词：强制内循环;厌氧;污水;水处理

中图分类号：X522;TV213.4 文献标志码：A

doi：10.3969/j.issn.1000-1379.2022.02.022

引用格式：徐越群，冯婧，冯博，等.強制内循环厌氧反应器对生活污水处理效果研究[J].人民黄河，2022，44（2）：112-115，120.

Abstract： The disorderly discharge of rural domestic sewage along the main canal of the South to North Water Diversion Project poses a serious threat to the water environment. High efficiency and low consumption sewage treatment technology has become an effective way to solve the increasingly serious rural domestic sewage problem. In view of the problem that the internal circulation of anaerobic reactor could not be carried out normally due to insufficient biogas production， the forced internal circulation reactor was adopted， nitrogen was used as the internal circulation power， and the granular sludge of ordinary anaerobic reactor was used as inoculated sludge to treat the domestic sewage. The results show that the forced internal circulation anaerobic reactor has higher removal rate of organic matter in wastewater and can operate stably;the decrease of organic matter concentration reduces the biological activity;some microorganisms are in the endogenous respiration period， so the particles become denser， the mechanical strength is better， and the sedimentation performance is better.

Key words： forced internal circulation;anaerobic;sewager;water treatment

南水北调工程对缓解我国北方地区水资源短缺和不断恶化的生态环境具有极为重要的作用[1]，但是东线工程大部分是在原有湖泊和河道基础上建设的[2-3]，总干渠沿线农村生活污水处理设施建设不足，存在污水直排入河的现象，使水体环境面临着氨氮超标、溶解氧降低、产生刺激性的腐臭味等问题[4-5]，严重影响了我国城镇化的发展，因此必须采取切实可行的污水处理方法，从源头上对相关流域进行有效保护，保障饮水安全。内循环厌氧反应器具有节省土地、节约投资、处理效率高等优点[6-9]，在污水处理领域得到了广泛运用。……