曝停比对两级SBBR处理猪场废水厌氧消化液的影响  

Effect of Aeration/Non-Aeration Ratio on Anaerobically Digested Pig Farm Wastewater Treated in Two-Stage Sequencing Batch Biofilm Reactor

作　　者：杨静超[1,2] 夏训峰[1] 席北斗[1] 邱鸿江[3] 王雷[1] 宿毅[2] 夏天骄[1,2] 

机构地区：[1]中国环境科学研究院,北京100012 [2]中国矿业大学(北京)化学与环境工程学院,北京100083 [3]浙江万里学院,浙江宁波315100

出　　处：《生态与农村环境学报》2013年第2期248-252,共5页Journal of Ecology and Rural Environment

基　　金：环保公益性行业科研专项(201109024);北京市科技计划(D101105046210004)

摘　　要：采用两级串联序批式生物膜法(SBBR)处理猪场废水厌氧消化液,设置运行模式a、b和c,其曝停比分别为1.5 h∶0.5 h(1级反应器)—2 h∶1 h(2级反应器)、1 h∶1 h—1.5 h∶0.5 h和1 h∶1 h—2 h∶1 h,总曝气时间分别为9.5、9.5和8.0 h,考察不同模式对废水处理效果和同步硝化反硝化等氮素转化情况的影响。结果表明,在温度为24～27℃、曝气阶段ρ(DO)控制在2.5～3.0 mg.L-1、进水ρ(COD)和ρ(NH3-N)分别为700～800和90～100mg.L-1条件下,各反应器均具有一定的脱氮能力,其中模式a效果最好,TN和NH3-N去除率分别为58.5%和68.2%。说明在两级串联SBBR反应器中,高曝停比—低曝停比的串联方式更有利于猪场废水厌氧消化液污染物的去除。通过调节每级曝气时间可将反应控制在同步硝化反硝化阶段,适当延长1级反应的曝气时间以及在2级反应初期设置1 h厌氧阶段可明显提高废水处理效果。Two-stage Sequencing Batch Biofihn Reactors were used to process anaerobically digested pig farm wastewater. The installation was designed to have 3 operation modes, a, b and c, that is, in Mode a, the aeration/non-aeration ratio 1.5 h ： 0. 5 h for the first stage reactor and 2 h ： 1 h for the second stage reactor, and the total aeration time 9. 5 h ; in Model b, 1 h ： 1 h and 1.5 h：0. 5 h, and 9.5 h, and in Model c, 1 h ： 1 h and 2 h ： 1 h, and 8.0 h, to investigate effect of aeration/non-aeration ratio on treatment of wastewater and simultaneous nitrification and denitrification of nitrogen. Resuits show that when the operation had the temperature controlled in the range of 24 -27℃ ,p （DO） at 2.5 -3.0mg·L-1 during the aeration period, p（COD） and p（NH3-N） at 700- 800 and 90- 100 mg·L-1, respectively in the influent, Model a was the highest in efficiency with TN and NH3 -N removal rate being 58. 5% and 68.2% , respectively, indicating that the combination of high aeration/non-aeration ratio with low aeration/non-aeration is more conducive to removal of pollutants in anaerobically digested pig farm wastewater.

关 键 词：两级串联序批式生物膜法(SBBR) 厌氧消化液 曝停比 同步硝化反硝化 

分 类 号：X703[环境科学与工程—环境工程]