不同CRI对生活污水农灌利用的影响  

Effects of different CRI on agricultural irrigation utilization of domestic sewage

作　　者：张超[1] 张国珍[1,2] 晏雯雯 武福平[1] 师旭军 王万红 ZHANG Chao;ZHANG Guo-zhen;YAN Wen-wen;WU Fu-ping;SHI Xu-jun;WANG Wan-hong(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Engineering Research Center for Comprehensive Utilization of Water Resource in Cold and Arid Regions ofMinistry of Education,Lanzhou 730070,China)

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]寒旱地区水资源综合利用教育部工程研究中心,甘肃兰州730070

出　　处：《应用化工》2020年第7期1638-1642,共5页Applied Chemical Industry

基　　金：国家自然基金(51768031);甘肃省重点研发计划(17YF1NA056)。

摘　　要：研究不同CRI(人工快速渗滤系统)对生活污水农灌利用的影响。结果表明,从COD的角度考虑,CRI1的出水只能用于旱作和水作的灌溉;CRI3的出水可用于旱作、水作和非生食蔬菜的灌溉;CRI2的出水(第7 d除外)可用于所有农作物的灌溉,机械通风扩大了CRI2出水农田灌溉的适用范围。CRI1和CRI3的氨氮去除率很低,虽然机械通风提高了CRI2的氨氮去除率,但是机械通风只是改变了进水中氮的形态,并没有将其去除。CRI1和CRI3的平均总氮去除率差不多,而CRI2的平均总氮去除率最低,机械通风降低了CRI2的总氮去除率,从而充分保留了污水中的氮,使其处理后的出水更有利于农田灌溉。由于三组CRI不排泥,从长远考虑,机械通风对总磷去除率的影响可以忽略不计。This study was aimed to explore the effect of different CRI on agricultural irrigation utilization of domestic sewage.The results showed that from the perspective of COD,the effluent of CRI1 could only be used for dry farming and water irrigation;the effluent of CRI3 could be used for dry farming,water farming and non-raw vegetable irrigation;and the effluent of CRI2(except on 7 d)could be used for irrigation of all crops.Mechanical ventilation enlarged the application scope of CRI2 effluent farmland irrigation.The removal rates of ammonia nitrogen in CRI1 and CRI3 were very low.Although mechanical ventilation improved the removal rates of ammonia nitrogen in CRI2,mechanical ventilation only changed the form of nitrogen in influent water and did not remove it.The average total nitrogen removal rate of CRI1 and CRI3 was similar,while that of CRI2 was the lowest.Mechanical ventilation reduced the total nitrogen removal rate of CRI2,thus fully retaining the nitrogen in sewage,making the treated effluent more conducive to farmland irrigation.Since three groups of CRI did not discharge mud,the effect of mechanical ventilation on total phosphorus removal rate could be neglected in the long run.

关 键 词：人工快速渗滤系统 生活污水 机械通风 农田灌溉 保氮保磷 

分 类 号：TQ08541[化学工程] X703.1[环境科学与工程—环境工程]