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厌氧酸化-SBR法处理甲醛废水 总被引:9,自引:0,他引:9
采用厌氧酸化-SBR法处理甲醛废水.在反应期厌氧段,采用中高温生物催化酸化,对季戊四醇、甲醛废水进行初级降解(将复杂分子转化为简单分子);在反应好氧段,进一步降解上一阶段的水解产物,运行结果表明,BOD5负荷0.04~0.08kg/(kgMLSS*d),甲醛负荷0.011~0.022kg/(kgMLSS*d),当反应期厌氧段为20h,好氧段为11h时,甲醛去除率可以达到98%,CODCr去除率90%以上. 相似文献
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厌氧序批式反应器的厌氧氨氧化工艺启动运行 总被引:5,自引:2,他引:5
在厌氧序批式反应器中接种好氧硝化污泥,进行了培养厌氧氨氧化污泥的研究。在进水pH值为7.2~7.8,温度为30±1℃的条件下运行142d,成功培养出厌氧氨氧化污泥。反应器内的污泥量(以VSS计)由原来的9.90g/L增加到18.99g/L,水力停留时间为1.20d,总氮容积负荷为0.4318kg/(m·3d)时,总氮去除率最高达到93.3%,平均为80.5%,氨氮和亚硝酸盐氮的去除率最高分别达到93.9%和99.8%,平均去除率分别为81.2%和85.7%,氨氮和亚硝酸盐氮去除的比例为1∶1.387±0.024。对该工艺优化实验研究表明,适宜pH值为7.2~7.8,最适宜温度为35℃;且适度强化反硝化作用有利于提高反应器的脱氮性能。 相似文献
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SBR工艺的现状与发展 总被引:22,自引:2,他引:22
序批式间歇活性污泥法(SBR)是近年来应用日趋广泛的一种污水处理工艺,在SBR工艺的基础上,又发展了一些SBR的变型工艺,例如ICEAS工艺、CASS工艺、UNITANK工艺、ASBR工艺、BSBR工艺等。今后应加强SBR工艺中微生物的研究和可靠的工程设计模式的探讨。 相似文献
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厌氧生物处理新工艺——厌氧序批式反应器 总被引:6,自引:0,他引:6
形成颗粒污泥和可以在常温下处理低浓度废水是厌氧序批式反应器的两个基本特征。文中讨论了厌氧序批式反应器(ASBR)的进水时间与反应时间之比、碱度和温度对ASBR运行的影响以及ASBR一个运行周期中各时间段的确定。 相似文献
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E. Ten Brummeler H. C. J. M. Horbach I. W. Koster 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》1991,50(2):191-209
Anaerobic digestion at high solid concentrations (dry anaerobic digestion) is an attractive method for the stabilization of solid organic wastes. A new concept for dry anaerobic batch digestion (BIOCEL) of the organic fraction of municipal solid waste is presented. The start up of a BIOCEL reactor was studied with several methods of process set up and operation. Dry anaerobic digestion of the pure undiluted organic fraction obtained from a shredding/separation process was not accelerated by partial spatial separation of substrate and methanogenic inoculum (granular sludge) or leachate recycle, or both. With these three methods after 30 days the high organic acids concentration and low pH in the reactor indicated a sour reactor, unable to establish significant methane production. When the organic fraction was digested in combination with compost addition (40% (w/w) of the initial solids) and leachate recycle, the stabilization rate increased significantly. Leachate recycling in combination with partial spatial separation of the substrate/compost mixture and the inoculum showed the shortest lag phase in the methane production and the shortest digestion time. When the digested residue of a completed digestion was applied as the methanogenic inoculum (40% (w/w) of the initial total solids) the digestion time was slightly shorter. It is concluded that dilution with compost had a positive effect on the start up of the dry anaerobic digestion and compensated for a suboptimal amount of initial methanogenic biomass. During the start up of dry anaerobic batch digestion of municipal solid waste the rapid recovery of methane formation from an initial overloading was observed and was found to be the result of a population shift in the methanogenic biomass and the existence of zones in the reactor with more optimal conditions (higher p H, lower organic acids concentration). The observed digestion time was 36 days. Recommendations are given to shorten the period needed, for complete digestion. 相似文献
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厌氧序批式反应器处理啤酒废水的快速启动研究 总被引:3,自引:1,他引:3
以中等浓度啤酒废水为水源,在低温下(14~20℃)研究了厌氧序批式反应器的快速启动过程。试验结果表明:当采用污水厂消化污泥接种,投加粉末活性炭并以间歇搅拌方式运行到第76天时,反应器容积负荷为6.5kg/(m3.d),出水挥发性脂肪酸浓度和CODCr去除效率分别为2.5mmol/L以下和96.1%,污泥停留时间达到了19.4d,同时完成污泥的颗粒化。和未添加活性炭相比污泥颗粒化时间缩短10d,表明厌氧序批式反应器低温下处理啤酒废水的快速启动是可行的。 相似文献
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气浮提取蛋白-UASB & SBR工艺处理淀粉废水 总被引:8,自引:1,他引:8
采用气浮提取蛋白 -UASB&SBR工艺处理淀粉废水 ,工程运行表明在进水SS、CODCr、BOD5分别为6 86 2mg/L、14 4 6 7mg/L、86 72mg/L的条件下 ,出水SS、CODCr、BOD5分别为 86mg/L、12 7mg/L、2 2 .5mg/L ,处理水质稳定达到《污水综合排放标准》(GB8978— 1996 )二级标准 ;同时在处理过程中能够制取蛋白饲料和沼气 ,具有显著的环境效益和经济效益 相似文献
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Chiu‐Yue Lin Chia‐Hong Jo 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2003,78(6):678-684
Studies on hydrogen production in an anaerobic sequencing batch reactor (AnSBR) indicated that the anaerobic acidogenic conversion of sucrose could produce hydrogen. The hydrogen production of acclimated sewage sludge depended on hydraulic retention time (HRT) and reaction period/settling period (R/S) ratio. A short equivalent HRT, even up to 4 h, gave good hydrogen productivity and high hydrogen production rate (HPR) values. For each equivalent HRT, R/S ratio control also increased the hydrogen productivity and HPR. Reactor operation at an intimate control of HRT and R/S ratio was preferable for hydrogen production. At HRT 8 h, R/S ratio 5.6 and an organic loading rate of 0.23 mol‐sucrose dm?3 day?1, each mole of sucrose in the mesophilic hydrogenic reactor yielded 2.6 mole of hydrogen; each gram of biomass produced 0.069 mole of hydrogen per day. Copyright © 2003 Society of Chemical Industry 相似文献