高浓度废水预处理

从分析冲击炼油污水处理的原因出发，阐述了高浓度废水预处理的重要性；重点介绍了三种好氧生物法处理技术；其中ＳＢＲ法由于工程技术日趋成熟，可优先推广应用     

生活垃圾生物处理的研究与展望

综述了国内外生活垃圾生物处理的研究进展和目前生活垃圾微生物研究水平，以及生活垃圾处理发展趋势与新动向，在此基础上提出了生活垃圾处理的建议和展望。     

电厂锅炉清洗废水治理工艺

电厂锅炉清洗废水中，含有高浓度的柠檬酸和丙酮肟等有机污染物。经试验，采取原水作适当稀释后，进行好氧曝气－活性炭生物膜法二级处理，ＣＯＤｃｒ总去除率可达８８％－９０％；ＢＯＤ５去除率为９０％。经两经处理后的出水，ＣＯＤｃｒ＜１００ｍｇ／ｌ，ＢＯＤ５＜５０ｍｇ／ｌ，可达到较好的处理效果。     

富Ca^2＋柠檬酸废水的处理

采用近三年废水处理厂的实际运行数据，分析了Ca^2 对厌氧和好氧的影响。在选用的工艺中，IC塔能适应高Ca^2 废水，不论是厌氧还是氧，Ca^2 对COD的去除都无影响。     

甲醇残液生化处理系统中好氧菌特性研究

以甲醇残液生化处理系统中的生物污泥为材料,运用分离技术,获得好氧菌30株。研究了每株细菌的生理生化特性和培养特征,将30株细菌鉴定为9个属,并进一步探讨了甲醇残液生物降解的模式。     

Oxygen demand for the stabilization of the organic fraction of municipal solid waste in passively aerated bioreactors

Conventional aerobic waste treatment technologies require the use of aeration devices that actively transport air through the stabilized waste mass, which greatly increases operating costs. In addition, improperly operated active aeration systems, may have the adverse effect of cooling the stabilized biomass. Because active aeration can be a limiting factor for the stabilization process, passive aeration can be equally effective and less expensive. Unfortunately, there are few reports documenting the use of passive aeration systems in municipal waste stabilization. There have been doubts raised as to whether a passive aeration system provides enough oxygen to the organic matter mineralization processes. In this paper, the effectiveness of aeration during aerobic stabilization of four different organic fractions of municipal waste in a reactor with an integrated passive ventilation system and leachate recirculation was analyzed. For the study, four fractions separated by a rotary screen were chosen. Despite the high temperatures in the reactor, the air flow rate was below 0.016 m³/h. Using Darcy’s equation, theoretical values of the air flow rate were estimated, depending on the intensity of microbial metabolism and the amount of oxygen required for the oxidation of organic compounds. Calculations showed that the volume of supplied air exceeded the microorganisms demand for oxidation and endogenous activity by 1.7–2.88-fold.     

好氧MBBR处理含吲哚废水的工艺优化试验研究

为了处理制药企业废水中吲哚类有机污染物,采用好氧MBBR(移动床生物膜反应器)工艺对含吲哚废水进行了试验研究,通过考察HRT、曝气量、吲哚冲击负荷等工艺条件对吲哚、COD和NH_4~+-N等去除效果的影响,确定了好氧MBBR反应器的最佳工艺条件。实验结果表明,在HRT在6~18 h变化时,MBBR工艺对吲哚去除率在8 h以上时达到100%,COD去除率在8 h达到89.65%,而NH_4~+-N去除率在12 h达到最高。在曝气量为0.1~0.12 m L/min时,MBBR工艺对COD和NH_4~+-N去除率分别为88.88%~92.95%和65%~66.83%。进水吲哚浓度25~65 mg/L变化时,好氧MBBR对吲哚去除率保持在100%,而对COD和NH_4~+-N去除率也保持在80%和40%以上,表明好氧MBBR工艺在处理难降解有机污染物方面具有显著优势。     

搅拌-序批式活性污泥反应器(WSBR)中好氧颗粒污泥的特性研究

为研究搅拌-序批式活性污泥反应器(WSBR)中好氧颗粒污泥的特性,利用WSBR反应器与传统SBR反应器对好氧活性污泥颗粒化的过程进行了比较.结果表明,在添加同量的聚炳烯酰胺(PAM)条件下,具有合理二次流场的WSBR反应器在4d就可见好氧颗粒污泥,而SBR反应器则在第10d才出现好氧颗粒污泥,且WSBR反应器中好氧颗粒...     

Aerobic granules cultivated and operated in continuous-flow bioreactor under particle-size selective pressure

A novel method based on the selective pressure of particle size （particle-size cultivation method, PSCM） was developed for the cultivation and operation of aerobic granular sludge in a continuous-flow reactor, and compared with the conventional method based on the selective pressure of settling velocity （settling-velocity cultivation method, SVCM）. Results indicated that aerobic granules could be cultivated in continuous operation mode by this developed method within 14 days. Although in the granulation process, under particle-size selective pressure, mixed liquor suspended solids （MLSS） in the reactor fluctuated greatly and filamentous bacteria dominated the sludge system during the initial operation days, no obvious difference in profile was found between the aerobic granules cultivated by PSCM and SVCM. Moreover, aerobic granules cultivated by PSCM presented larger diameter, lower water content and higher specific rates of nitrification, denitrifieation and phosphorus removal, but lower settling velocity. Under long term operation of more than 30 days, aerobic granules in the continuous-flow reactor could remain stable and obtain good chemical oxygen demand （COD）, NH4^＋-N, total nitrogen （TN） and total phosphorus （TP） removal. The results indicate that PSCM was dependent on the cultivation and maintenance of the stability of aerobic granules in continuous-flow bioreactors.