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研究以集中型沼液为对象,考察了微电解-电极-SBBR组合工艺的处理效果。研究结果表明,在常温条件下,铁炭微电解反应按照推荐的反应参数的条件(曝气量为15.0 L/(min·L)、初始p H值为4、Fe/C为2∶1、HRT为2.5 h、反应级数为3级),电极-SBBR采用瞬时进水、厌氧1.0 h、曝气4.0 h(通电)、缺氧/厌氧2.0 h(通电)、出水、闲置的运行工序。在反应器稳定运行的条件下,对化学需氧量(COD)、氨氮(NH+4-N)、总磷(TP)、固体悬浮物(SS)的平均去除率分别为92.2%、93.5%、93.2%和98.4%。出水的COD、NH+4-N、TP和SS的浓度能够达到《畜禽养殖行业污染物排放标准》(GB18596-2001)的要求。
In this study, concentrated biogas slurry was taken as research object to investigate the effect of micro-electrolysis-electrode-SBR process. The results show that under the normal temperature conditions, the iron carbon micro-electrolysis reaction according to the recommended reaction conditions (aeration rate of 15.0 L / (min · L), the initial p H value of 4, Fe / C 2: 1, HRT was 2.5 h and the reaction order was 3). The electrode-SBR used instantaneous influent, anaerobic 1.0 h, aeration 4.0 h (energized), anoxia / anaerobic 2.0 h (energized), effluent, idle operation Process. The average removal rates of chemical oxygen demand (COD), ammonia nitrogen (NH 4 + -N), total phosphorus (TP) and solid suspended solids (SS) were 92.2% and 93.5% , 93.2% and 98.4% respectively. The concentration of effluent COD, NH + 4-N, TP and SS can meet the requirements of “Emission Standard of Pollutants for Livestock and Poultry Breeding Industry” (GB18596-2001).