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利用厌氧附着膜污泥膨胀床(AAFEB)处理寒冷地区小城镇生活污水,并将其出水用于灌溉小白菜,研究厌氧出水用于农业灌溉的可行性。结果表明,AAFEB在10℃以上的条件下能够有效去除生活污水中的COD、粪大肠菌群及重金属等污染物,出水中各污染物浓度均能达到《农田灌溉水质标准》(GB 5084—2005)的要求;与未经处理的生活污水相比,AAFEB出水对小白菜种子发芽的抑制明显减弱,水中的氮、磷等营养物质能够满足小白菜生长所需。
The use of anaerobic membrane-attached expanded sludge bed (AAFEB) to treat domestic sewage in small towns in cold areas and the use of its effluent for the irrigation of Chinese cabbage to study the feasibility of anaerobic effluent for agricultural irrigation. The results showed that AAFEB can effectively remove COD, feal coliform and heavy metals in domestic sewage under the condition of above 10 ℃. The concentration of each pollutant in effluent can reach the standard of “Irrigation Water Quality in Farmland” (GB 5084-2005 ). Compared with the untreated domestic sewage, AAFEB effluent inhibited the germination of Chinese cabbage seeds obviously. The nutrients such as nitrogen and phosphorus in water could meet the needs of the growth of Chinese cabbage.