生物活性炭技术在污水回用深度处理中的应用

以城市污水处理厂二级出水为对象．开展了生物活性炭技术回用深度处理的现场试验,重点研究了运行方式及主要运行参数对深度处理效果的影响。研究表明：生物活性炭上向流运行明显优于下向流．在空床停留时间为10min,气水比2.7．反冲洗周期为4～6天时,出水氨氮、浊度及有机物等主要指标均可达到《城市污水再生利用城市杂用水水质》（GB／T18920—2002）要求,在城市污水处理厂出水回用于城市杂用水的深度处理中有较好的应用前景。     

青浦区某小区雨污分流改造的探索

青浦区某小区雨水直排张倪家浜,该河道水质为劣Ⅴ类,为苏四期重点整治的中小河道之一。调查发现此小区雨水排河口存在旱流污水,严重影响河道水质,通过分析该小区排水系统存在的主要问题及雨污混接的主要来源,提出雨污分流改造的措施,以改善地区的水环境污染状况,为上海市小区雨污分流改造工作提供借鉴。     

生物陶粒反应器处理微污染水源试验研究

介绍了生物陶粒反应器处理微污染水源的试验研究。从试验方法、试验结果等方面进行了论述 ,指出该试验可有效改善后续传统工艺对污染物的去除效果 ,节省部分混凝剂和氯的投加量 ,降低制水成本     

反渗透深度处理炼化废水的应用研究

采用反渗透工艺深度处理经连续微滤(CMF)预处理后的炼化废水.试验结果表明,反渗透对CMF出水COD的去除率高于93%,电导率降低了95%.出水可回用作循环冷却水系统补给水,有较好的经济效益和社会效益.     

含酚废水的生物处理方法及其进展

介绍了含酚废水的主要来源和危害,对常见含酚废水的生物处理方法的原理和特点进行了介绍,并阐述了这些方法近年来的研究进展,为开展含酚废水的污染防治研究工作提供了理论指导。     

污水净化公司中水回用工程介绍

介绍了某市污水净化公司中水回用工程的设计内容，对污水处理厂的二级处理出水进行深度处理后回用于工业用水进行了探讨，经运行证明，该技术具有明显的社会效益和经济效益。     

城市污水处理厂工艺调试方法初探

针对城市污水处理厂工艺调试的重要性,结合工艺调试的内容及目的,探讨了城市污水处理厂工艺调试的基本方法及注意事项,并提出了相关建议,以保证调试工作的有效开展.     

铜川市污水处理厂升级改造项目污水工艺研究

对铜川市污水处理厂升级改造项目所采用的污水处理工艺进行了分析,从水质标准、现存问题、工艺流程等方面进行了论述,解决了出水NH3-N,SS等指标不稳定的问题。     

天津市某污水处理及再生水利用工程设计探讨

结合GB 18918-2002城镇污水处理厂污染物排放标准,对天津市某污水处理及再生水利用工程设计进行了探讨,分别阐述了具体处理工艺及相关设计参数,并归纳了该设计方案中的节能措施,以指导今后同类工程项目。     

重金属污染废水微生物处理机制及其研究进展

从微生物对重金属离子的转化机制、吸附机制、絮凝机制等方面阐述了微生物法去除废水中重金属离子的基本原理,并对其研究进展及未来的主要研究方向进行了综述,指出微生物法具有良好的生态效益和应用前景。     

Membrane bioreactor for the drinking water treatment of polluted surface water supplies

A laboratory membrane bioreactor (MBR) using a submerged polyethylene hollow-fibre membrane module with a pore size of 0.4 microm and a total surface area of 0.2 m2 was used for treating a raw water supply slightly polluted by domestic sewage. The feeding influent had a total organic carbon (TOC) level of 3-5 mg/L and an ammonia nitrogen (NH(3)-N) concentration of 3-4 mg/L. The MBR ran continuously for more than 500 days, with a hydraulic retention time (HRT) as short as 1h or less. Sufficient organic degradation and complete nitrification were achieved in the MBR effluent, which normally had a TOC of less than 2 mg/L and a NH(3)-N of lower than 0.2 mg/L. The process was also highly effective for eliminating conventional water impurities, as demonstrated by decreases in turbidity from 4.50+/-1.11 to 0.08+/-0.03 NTU, in total coliforms from 10(5)/mL to less than 5/mL and in UV(254) absorbance from 0.098+/-0.019 to 0.036+/-0.007 cm(-1). With the MBR treatment, the 3-day trihalomethane formation potential (THMFP) was significantly reduced from 239.5+/-43.8 to 60.4+/-23.1 microg/L. The initial chlorine demand for disinfection decreased from 22.3+/-5.1 to 0.5+/-0. 1mg/L. The biostability of the effluent improved considerably as the assimilable organic carbon (AOC) decreased from 134.5+/-52.7 to 25.3+/-19.9 microg/L. All of these water quality parameters show the superior quality of the MBR-treated water, which was comparable to or even better than the local tap water. Molecular size distribution analysis and the hydrophobic characterisation of the MBR effluent, in comparison to the filtered liquor from the bioreactor, suggest that the MBR had an enhanced filtration mechanism. A sludge layer on the membrane surface could have functioned as an additional barrier to the passage of typical THM precursors, such as large organic molecules and hydrophobic compounds. These results indicate that the MBR with a short HRT could be developed as an effective biological water treatment process to address the urgent need of many developing countries that are plagued by the serious contamination of surface water resources.     

某污水处理厂混凝土污水池检测鉴定分析研究

从外观质量、钢筋锈蚀情况、混凝土碳化深度等方面对某混凝土污水池结构进行了全面的检测,根据现场检测数据和检测结果,对污水池的安全性和耐久性进行了总体评估,结果表明该污水池较安全。     

Development of a biological filtration model applied for advanced treatment of sewage

A mathematical model of biological filtration process is developed in this paper. A biological filtration process has advantages that filtration action and biological activities are combined in a single reactor with aid of filter media. Both physical and biological functions are incorporated in this developed model to simulate both mechanisms. Backwashing is expressed by the assumption that a mean captured solids concentration is input as data, and a captured solids concentration is kept at that value during each filtration run. The developed model is applied to explain the experimental performance with biological filtration reactors, in which batch cultivation of autotrophic bacteria and continuous treatment of actual sewage are carried out. Its applicability is discussed by comparing the simulated results with the experimental data. This model can favourably estimate maximum accumulation of autotrophic bacteria on the medium in batch cultivation, long-term treatment performance in continuous treatment, details of water quality profiles through the filter bed, and biomass. Required hydraulic retention time for nitrification and an appropriate recirculation ratio in a winter season are discussed with this model. This model predicts that a HRT of 1.1 h or above is required to achieve nitrification with remaining NH4(+)-N of less than 1 mgN/L and that an appropriate recirculation ratio is 2-3.     

氯丁橡胶污水厂污水深度处理回用与应用成果

详细介绍了氯丁橡胶污水厂污水深度处理回用选用的曝气生物滤池＋混凝沉淀池＋多介质过滤＋微滤＋反渗透工艺,重点阐述了该工艺运行原理及主要装置的运行情况,达到了预期的去除效果。     

污水资源化探讨

通过了解国内、国外污水资源化的利用现状情况,阐述了污水资源化的必要性及解决对策,指出全民应重视污水资源化问题,将节水与治污相结合,以使污水再生利用得以顺利进行,从而构建完善的污水资源化利用体系。     

Removal of antibiotics from water using sewage sludge- and waste oil sludge-derived adsorbents

Sewage sludge- and waste oil sludge-derived materials were tested as adsorbents of pharmaceuticals from diluted water solutions. Simultaneous retention of eleven antibiotics plus two anticonvulsants was examined via batch adsorption experiments. Virgin and exhausted adsorbents were examined via thermal and FTIR analyses to elucidate adsorption mechanisms. Maximum adsorption capacities for the 6 materials tested ranged from 80 to 300 mg/g, comparable to the adsorption capacities of antibiotics on various activated carbons (200-400 mg/g) reported in the literature. The performance was linked to surface reactivity, polarity and porosity. A large volume of pores similar in size to the adsorbate molecules with hydrophobic carbon-based origin of pore walls was indicated as an important factor promoting the separation process. Moreover, the polar surface of an inorganic phase in the adsorbents attracted the functional groups of target molecules. The presence of reactive alkali metals promoted reaction with acidic groups, formation of salts and their precipitation in the pore system.     

Use of some natural and waste materials for waste water treatment

A fundamental study was conducted to assess removal and filtration capacity of waste and natural indigenous materials as treatment mediums e.g., shell, limestone, waste paper mixed with refuse concrete, refuse cement, also processed nitrolite, charcoal-bio and charcoal. Under room temperature condition removal of phosphoric, nitric and ammonium-ions, filtration of suspended substance (SS) together with removal of COD in waste water was investigated. Influence of particle size effect for all treatment mediums except for waste paper was pursued. Significant improvement of waste water quality with respect to SS, phosphoric ions and decrease in COD is possible by treating with these filtration mediums. With specific reference to some treatment mediums NO3-N and NH4-N showed reasonable improvement in quality, although generally removal effect was not very significant. Efficacy of treatment was dependent on the particle size of treatment mediums in general, however, nitrolite for NH4--N, charcoal-A for SS and COD, refuse cement mixed with waste paper for PO4 ion removal showed insignificant variability on the particle size effect. Results of this fundamental study demonstrate effectiveness and feasibility for applied application of these proposed waste and naturally available treatment ingredients at lower cost.     

高锰酸盐复合药剂用于石油污染原水处理的研究

分析了高锰酸盐复合药剂(PPC)对石油的氧化性能,研究了PPC用于混凝时对石油的强化去除效果和PPC-粉末活性炭联用除油技术.结果表明:PPC对石油有较好的氧化性能,去除率达35%以上,PPC在原水中性条件下,对石油的处理效果最佳;原水石油低倍超标(<0.5mg/L)时,原水中性条件下投加1.5 mg/L PPC和20 mg/L聚合氯化铝(PAC)可保证出水水质达标;PPC-粉末活性炭吸附联合技术对石油的最大可处理污染浓度为5.5 mg/L.