ABR结合SBR法处理印染废水的研究

Study on Treatment of Dyeing Wastewater in the Combination Process of ABR and SBR

采用实验室规模的厌氧折流板反应器(ABR)与序批式活性污泥曝气反应器(SBR)结合工艺处理印染废水.通过对ABR-SBR处理系统工艺条件的试验,在ABR段HRT为24～36 h,污泥负荷为0.43～2.46 kg COD/(m3·d),进水pH值为6.5～8.0,温度20℃～35℃;SBR段的溶解氧为2 mg/L,曝气时间为3～10 h,沉淀时间为2 h的条件下,经处理的印染工业废水COD、色度和苯胺去除率分别为32%～95%、89%～99%和50%～98%,其COD为30.0～97.1 mg/L,色度为8～40倍,苯胺浓度为0.20～0.95mg/L,达到了国家一级排放标准.

A laboratory scale combination process of anaerobic baffled reactor （ABR） with sequencing batch reactor （SBR） for treatment of real dyeing wastewater was studied. The effects of operational conditions were investigated. The results demonstrated that removal rates of COD, colour and aniline were 32% ～ 95%, 89% ～ 99% and 50% ～98%, respectively, the effluents of COD were 30. 0 ～97. 1mg/L, colour were 8 ～40 times dilution ratio, concentration of aniline were 0. 20 ～0.95 mg/L, which could meet the National Discharge Criteria （Grade Ⅰ ） under the operational conditions of HRTs of 24 ～ 36 h, organic loading rates of 0.43 ～ 2.46 kg COD/ （ m^3 · d）, the influent pH values of 6.5 ～ 8.0, ambient temperatures of 20℃ ～ 35℃ at the ABR stage and DOs of 2 mg/L, reaction times of 3 ～ 10h, settle times of 2 h at the SBR stage.