ABR工艺预处理木薯酒糟废水的工程应用

木薯酒糟废水有机物浓度高、悬浮物含量大、pH呈酸性、可生化性能较差 ,通常直接采用固液分离—厌氧 (UASB)—好氧曝气生化法处理效果并不理想 ,而采用ABR工艺进行厌氧水解酸化预处理木薯酒糟废水迄今为止未见报道。经绵阳市酒厂废水治理工程证明 ,强化ABR预处理工序是保证后续处理措施能否正常运行的关键     

Petro-chemical wastewater treatment by biological process

Ｉｎｔｈｅｃｏｕｒｓｅｏｆｏｉｌｒｅｆｉｎｉｎｇ,ｏｒｇａｎｉｃｗａｓｔｅｗａｔｅｒｗｉｔｈｈｉｇｈｃｏｎｃｅｎｔｒａｔｉｏｎｏｆｅｍｕｌｓｉｆｉｅｄｏｉｌａｎｄｐｈｅｎｏｌｉｓｐｒｏｄｕｃｅｄ,ｓｏｆａｒ,ｔｈｅｍｅｔｈｏｄｓｏｆｐｈｙｓｉｃｏｃｈｅ?..     

不对称氧化铝膜管的微滤性能研究

采用熔模离心法制备的不对称氧化铝微滤膜管的孔径沿径向呈样度分布，控制层孔径均匀。最可几孔径为０．０５μｍ，最大孔径为０．１μｍ的管能滤原液中全部的细菌，获得完全无菌的水，但过滤速率太慢，最可几孔径为０．１μｍ，最大孔径为０．２μｍ、最大孔径０．３μｍ。     

膜生物反应器中膜污染研究进展

膜生物反应器是近年新发展起来的高效废水处理工艺。本文综述了国内外对膜污染机理研究的最新成果 ,介绍了相应的解决措施 ,展望了今后的发展前景。     

物理化学预处理与膜分离技术的应用

将物理化学预处理与膜分离技术深度处理结合应用于工业废水处理，可使其中的Ｃｒ６＋＜０．５ｍｇ／ｌ，Ｚｎ２＋＜２０ｍｇ／ｌ，ｐＨ６～９。用膜分离技术处理造纸废水可回收其中的木质素和糖份，回收率均为６０％左右。     

膜生物反应器与传统活性污泥工艺除污特性比较

比较了膜生物反应器（MBR）和传统活性污泥工艺（CAS）在相同运行条件下对生活污水的除污特性.结果表明,MBR系统对COD、NH3-N和TN的平均去除率比CAS分别高14.4%、51.2%和37.3%.但MBR中膜的截留使系统相对比较封闭,制约了通过排放高磷污泥的生物法除磷,除磷效率仅为32.9%,低于CAS工艺（43.0%）;将MBR与化学除磷工艺相结合,MBR系统除磷效率可达93.3%.     

Treatment of a dyeing wastewater from a woolen mill using an A/O membrane bio-reactor

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｄｙｅｉｎｇｗａｓｔｅｗａｔｅｒｏｆｗｏｏｌｅｎｍｉｌｌｃｏｎｔａｉｎｓａｌｏｔｋｉｎｄｓｏｆｐｏｌｌｕｔａｎｔｓ,ｓｕｃｈａｓａｃｉｄｉｃｄｙｅｓ,ｄｉｓｐｅｒｓｅｄｙｅｓ,ｍｏｒｄａｎｔｄｙｅｓ,ａｕｘｉｌｉａｒｉｅｓ,ｓａｌｔｓａｎｄｓｏｏｎ .Ｔｈｅｅｆｆｌｕｅｎｔｓｆｒｏｍｗａｓｔｅｗａｔｅｒｔｒｅａｔｍｅｎｔｐｌａｎｔｓｆｏｒｔｒｅａｔｍｅｎｔｏｆｔｈｅｄｙｅｉｎｇｗａｓｔｅｗａｔｅｒｏｆｗｏｏｌｅｎｍｉｌｌｓｗｉｔｈｎｏｒｍａｌｂｉｏｌｏｇｉｃａｌｐｒｏｃｅ…     

染化废水厌氧生物处理技术的研究

鉴于厌氧微生物对偶氮染料的还原裂解作用，开发了以易降解工业有机废水作为外加碳源的染化废水厌氧生物处理的新技术．试验结果表明：在进水ＣＯＤ３１００—３５００ｍｇ／Ｌ，ＣＯＤ总／ＣＯＤ染化比值４０，ＨＲＴ３．０ｄ下，ＣＯＤ去除率＞８０％，最低染化ＣＯＤ去除率＞４５％，色度去除率＞８５％；实验证实，在厌氧处理过程中，染料组分的结构已发生了明显的变化；反应器内的污泥大多呈颗粒状；污泥活性和工艺性能可控制工艺运行参数得以维持．     

Test of membrane bioreactor for waste water treatment in a petrochemical complex

Membrane bioreactor (MBR) used in water and waste water treatment is a developing technique for water pollution control and water reuse. This paper describes a membrane-bioreactor for treatment of waste water in a petrochemical complex. The experimental MBR was a lab scale one composed of an activated sludge bioreactor unit and an ultrafiltration membrane unit. The relationship of COD removal with MLSS and HRT in this MBR was studied. The effects of crossflow velocity, backwash interval and volume of flush liquid on the flux were discussed. The results showed that average removal of COD, oil, SS and turbidity in petrochemical waste water by the MBR was 91%, 86%, 92% and 99% respectively. The average removal of NH₃-N and total phosphorous was 85% and 82%. A coefficient of COD removal, k, was 0.017-0.080 L/(mg.d). The membrane flux maintained higher than 60 L/hm2 bar for 34 days without chemical cleaning when the velocity of crossflow was 3.5-3.9 m/s and the backwash interval was 30 minutes and backwash duration at 20 seconds. The results indicated that it is feasible for MBR technology to be used in petrochemical waste water treatment. The treated water could be considered as a source used to make up water for industrial cooling system or to be reused for other purposes.     

Acid resistance of methanogenic bacteria in a two-stage anaerobic process treating high concentration methanol Wastewater

In this study, the two-stage upflow anaerobic sludge blanket (UASB) system and batch experiments were employed to evaluate the performance of anaerobic digestion for the treatment of high concentration methanol wastewater. The acid resistance of granular sludge and methanogenic bacteria and their metabolizing activity were investigated. The results show that the pH of the first UASB changed from 4.9 to 5.8 and 5.5 to 6.2 for the second reactor. Apparently, these were not the advisable pH levels that common methanogenic bacteria could accept. The methanogenic bacteria of the system, viz. Methanosarcina barkeri, had some acid resistance and could still degrade methanol at pH 5.0. If the methanogenic bacteria were trained further, their acid resistance would be improved somewhat. Granular sludge of the system could protect the methanogenic bacteria within its body against the impact of the acidic environment and make them degrade methanol at pH 4.5. The performance of granular sludge was attributed to its structure, bacteria species, and the distribution of bacterium inside the granule. Translated from Acta Scientiae Circumstantiae, 2004, 24(4): 633–636 [译自: 环境科学学报]