CAJ | 학술논문

研究了常温(17～25℃)下4隔室厌氧折流板反应器(ABR)处理低浓度废水的运行效果及污泥特性.在水力停留时间(HRT)为24 h,进水COD浓度为1500、1000和500 mg/L左右时,平均COD去除率分别为94%、93%和87%.进水COD浓度保持在500 mg/L左右,将HRT降为12 h和8h,COD的去除率仍达到83%以上.厌氧污泥性质测定结果表明,最后隔室中的污泥浓度、颗粒化程度及产甲烷活性与其他隔室相比明显较低,说明低浓度进水对最后隔室厌氧污泥的性质影响较大.颗粒污泥扫描电镜观察显示,各隔室颗粒污泥内部微生物组成差异较大,第1隔室颗粒污泥以产甲烷球菌为主,第2隔室颗粒污泥中没有明显的优势菌,但杆状菌比第1隔室明显较多,第3、4隔室颗粒污泥中以索氏甲烷丝菌为优势菌.
연구료상온(17～25℃)하4격실염양절류판반응기(ABR)처리저농도폐수적운행효과급오니특성.재수력정류시간(HRT)위24 h,진수COD농도위1500、1000화500 mg/L좌우시,평균COD거제솔분별위94%、93%화87%.진수COD농도보지재500 mg/L좌우,장HRT강위12 h화8h,COD적거제솔잉체도83%이상.염양오니성질측정결과표명,최후격실중적오니농도、과립화정도급산갑완활성여기타격실상비명현교저,설명저농도진수대최후격실염양오니적성질영향교대.과립오니소묘전경관찰현시,각격실과립오니내부미생물조성차이교대,제1격실과립오니이산갑완구균위주,제2격실과립오니중몰유명현적우세균,단간상균비제1격실명현교다,제3、4격실과립오니중이색씨갑완사균위우세균.
The performance and the sludge characteristics of an anaerobic baffled reactor (four compartments) treating low-strength wastewater were investigated at normal temperatures (17 ～ 25℃). With a hydraulic retention time (HRT) of 24 h and influent COD concentrations of 1500, 1000 and 500 mg/L, the average COD removal rates were 94%, 93% and 87%, respectively. At a constant influent COD of 500 mg/L, the HRT was reduced to 12 h and 8 h, COD removal rate was more than 83%. The concentration, particle size and specific methanogenic activity of the sludge in the last compartment were significantly lower than in the other compartments. This revealed that the low-strength influent influenced the sludge properties in the last compartment more strongly than in the other compartments. The examinations of scanning electron microscope indicated that the microbial composition of granular sludge were obviously different in four compartments. The granules in compartment 1 were mainly comprised of methanococcus. There were no absolutely predominant bacteria in compartment 2. Methanothrix soehngenii were predominant bacteria of granular sludge in compartment 3 and 4.