垂直厌氧折流板反应器—序列间歇式活性污泥法处理核苷酸废水的试验研究

Treatment of nucleotide production wastewater in a vertical anaerobic baffled reactor system followed by a sequencing batch reactor

采用垂直厌氧折流板反应器(VABR)—序列间歇式活性污泥法(SBR)处理核苷酸废水。结果表明:在(37±2)℃下,采用VABR处理核苷酸废水,当COD容积负荷在13.4kg/(m3·d)左右、水力停留时间(HRT)为24h时,COD去除率基本在85%以上,厌氧微生物对该废水具有很强的适应能力;SBR运行开始阶段,好氧活性污泥对低浓度段废水的适应性非常好,COD去除率在80%以上,出水COD稳定在200mg/L以下;考虑到厌氧出水的色度和Cl-浓度较高,建议进行深度处理,以满足达标要求。

A combined system of vertical anaerobic baffled reactor （VABR） system coupled with sequencing batch reactor （SBR） was established for treatment of nucleotide production wastewater. Results showed that when VABR operated at （37 ± 2） ℃, hydraulic retention time （HRT） of 24 h and COD volume loading of 13. 4 kg/（m^3 · d）,VABR achieved perfect treatment performance with COD removal rate reached more than 85 %. The an-aerobic microbes in VABR presented strong adaptive capability to nucleotide production wastewater. The aerobic acti-vated sludge in SBR was adaptable to low concentration wastewater during the initial operating process,the COD re-moval rate was more than 80% with effluent COD maintained lower than 200 mg/L. Considering the high colority and high C1-concentration of anaerobic effluent, the advanced treatment processes was suggested to follow the VABR-SBR process so as to achieve the standard discharge.