共查询到19条相似文献,搜索用时 700 毫秒
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曝气器是污水处理厂的核心设备。目前广泛运用的鼓风机微孔曝气是一种高效节能的曝气方式。选择适当的微孔曝气器是非常重要的,不仅保障污水处理效果稳定,运行成本较低,还能节省设备投资和维护费用。结合微孔曝气器在污水处理厂的运用效果,分析了各种微孔曝气器的性能、特点和优劣,并对污水处理厂微孔曝气器的选型进行了探讨。 相似文献
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城镇污水处理厂低浓度连续进水间歇曝气运行模式分析 总被引:3,自引:0,他引:3
根据南方城镇污水处理厂建成运行初期的实际运行情况,对低浓度进水的运行模式进行了分析和研究。运行中,污水处理厂MISS浓度调整为25g/L,采用曝气3h、停曝5h、连续进水的运行模式,实现了生物系统稳定运行,出水达标。 相似文献
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雅砻江干流中下游是我国规划的十三大水电基地之一,水能资源可开发量巨大。由于该地区高寒、高海拔的特点导致水电开发施工期生活污水的处理难度较大。通过分析该开发段两河口工程区现有生活污水处理工艺存在的问题及原因,并对部分高寒、高海拔地区污水处理厂进行调研,分析此类地区现有各类型生活污水处理工艺的优缺点,来探寻适合两河口区域成熟可靠的小型生活污水处理工艺。通过调研分析得出该地因水温低、空气含氧量少、水质波动大及现有处理系统不合理等原因导致污水处理系统不能稳定运行,提出应增加增温、防冻措施减少低水温对污水处理设施的影响,加大深层微孔鼓风曝气应对高海拔对曝气充氧量的影响等改进建议,并推荐采用MBR等适合工艺。 相似文献
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百乐克(BIOLAK)工艺设计中应注意的问题 总被引:3,自引:0,他引:3
百乐克工艺近两年来在国内中小型污水处理厂应用较广,其曝气装置独特,反应池组合方式灵活,池型结构独特,投资低廉,运行费用省。本文通过现有百乐克工艺污水处理厂的实际运行经验,提出了预处理、澄清池和稳定池、总氮处理和池体结构设计中应注意的问题及解决办法。 相似文献
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本文介绍了在污水处理中好氧阶段的可不停产检修的曝气系统,重点阐述了实现不停产检修的曝气系统的曝气器选用及下垂式曝气系统、上浮式曝气平台、漂浮式曝气悬链三种布气装置。该技术能够实现污水处理厂的不停产检修,保证污水处理设施的连续运行,具有很高的推广价值。 相似文献
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膜曝气生物膜反应器生物膜影响因素分析 总被引:1,自引:0,他引:1
膜曝气生物膜反应器(MABR)是一种利用透气膜进行曝气,可以实现同步硝化反硝化的污水生物处理新工艺。本文阐述了膜曝气生物反应器生物膜的原理和特点,总结了国内外在该领域的研究成果,重点介绍了C/N、氧气压力、流速、生物膜厚度、温度和pH对生物膜性能的影响。 相似文献
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郭爽 《中国环境管理干部学院学报》2013,(2):66-68
啤酒废水具有水量大、污染物浓度高、易生物降解的特点。介绍了当前厌氧一好氧的组合工艺中UASB—SBR工艺、UASB—CASS工艺、EGSB一接触氧化工艺、USFB—AODT工艺、水解酸化-UASB—A/O工艺等主流工艺的原理和研究现状,以及射流曝气MBR5-艺、双极室联合工艺、光合细菌治理工艺等将来啤酒废水治理热点技术,并对啤酒废水治理技术的未来发展趋势进行了展望。 相似文献
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Biological treatment of wastewater in aeration tanks: Theoretical bases for process calculations 下载免费PDF全文
This article describes the method, based on the kinetics of enzyme reaction, for calculating treatment rates for wastewater effluents of varied concentrations in mixing aeration tanks and continuous flow aeration tanks. Using this method would make it possible to optimize the parameters of the biological treatment of wastewater. In addition, the authors illustrate that partitioning of the aeration space of the mixing aeration tank in a separate KU‐200 compact installation, which is intended for wastewater treatment from small sources, would make it possible to increase its efficiency by a factor of 1.8. 相似文献
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炼油化工废水水量大,含有较高浓度的COD、NH3-N、硫、酚、石油类等污染物,活性污泥法具有运行稳定,耐负荷运行、成本低、维护方便和处理效果良好的特点。文章通过分析污泥沉降比与各因素之间的关系,得出:温度是影响沉降比主要因素,外界环境因素也影响污泥沉降比,污泥沉降比对维持曝气池稳定有重要作用,利用污泥沉降比可以调节剩余污泥排放量,控制污泥浓度;通过污泥沉降比的变化可以及早判断和发现污泥膨胀,及时做出工艺运行调整。 相似文献
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中空纤维膜生物反应器处理炼厂浮选池出水试验研究 总被引:2,自引:0,他引:2
研究设计的膜生物反应器处理炼厂浮选池出水,在每天进水容积负荷1.0 kg COD/m3,进水COD浓度600 mg/L,MLSS为900~5500 mg/L的条件下,无论活性污泥表现正常还是膨胀,过滤出水中COD均稳定地小于90 mg/L,处理效果好于目前炼油厂的合建式曝气池(容积负荷为0.5 kg COD/m3左右,出水COD100 mg/L左右)。试验运行期间,膜通量最高可达到42 L/m2·h。该工艺的技术关键是采用特殊流态来降低膜堵塞的膜生物反应器和优良质量的膜。 相似文献
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The Sequencing Batch Reactor (SBR) system employing activated sludge process is an alternative wastewater treatment technology. A cycle of the conventional SBR system generally consists of five periods, with complete aeration during the React period to oxidize the organic matter and nitrify the ammonium-nitrogen of wastewater. Laboratory-scale reactors were used to evaluate the feasibility of incorporating alternative aerobic-anoxic-aerobic stages within the React period for simultaneous removal of organic matter, N and P. Two cycles of SBR process per day were maintained.Under the operation strategy of 0.75-h fill, 8-h react (with continuous aeration), 3.25-h settle, draw and idle periods, the treatment performance became consistent after running the system for two to four cycles (1–2 days). The percentages of both BOD5 and COD removal were around 94% from Cycle 2 onwards, the BOD5 content dropped from initial 251 mg L−1 to less than 14 mg L−1 in the final effluent. A steady nitrification (about 97%) was obtained from Cycle 4 onwards, with 1 mg NH4+-N L−1 and 25 mg NO3−-N L−1 present in the final effluent. This suggested that the time required for SBR system to acclimate and reach an equilibrium state was relatively short when compared with the time needed for continuous flow activated sludge system. The findings also show that 4-h aeration during the react period was long enough to achieve more than 90% nitrification. With the incorporation of a 3-h anoxic stage after the initial 4-h aeration of the react period, a satisfactory denitrification process was observed, with nitrate level dropped from 27 to around 8 mg L−1 within 3 h. The second aeration stage did not cause significant change in wastewater nitrogen content. The wastewater phosphate content declined rapidly during the initial 4-h aeration and P-release was not observed during the anoxic stage. A slight reduction of P was found in the second aeration stage suggesting that more P-uptake occurred in this stage. A 12-h cyclic SBR system with the incorporation of 4-h aerobic, 3-h anoxic and final 1-h aerobic stages into the 8-h react period was demonstrated to be able to remove C, N and P simultaneously. 相似文献
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曝气生物滤池在石化污水处理工程中的应用 总被引:1,自引:0,他引:1
曝气生物滤池可以用于石化污水的二段生化处理,是一种运行可靠、自动化程度高、出水水质好和抗冲击能力强的好氧生物处理新工艺。它与活性污泥法工艺相比,对于低基质污水二段生化工况,其有机物容积负荷高,污水停留时间短,其后不须设置二次沉淀池。与普通生物滤池相比,其占地面积小,不宜堵塞。与生物接触氧化方法相比,生物活性较高,处理效果好。曝气生物滤池集曝气池、二次沉淀池和滤池的功能于一身,其出水水质指标可以完全达到《污水综合排放标准》(GB8978-1996)一级标准。 相似文献
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四川沱牌集团污水综合治理工程联动运行及工艺调试 总被引:1,自引:0,他引:1
本文介绍了四川沱牌集团污水综合治理工程所采用的预处理-厌氧-好氧处理工艺的联动运行及工艺调试情况,探讨了pH调整、UASB的启动、好氧池丝状菌的控制方法,阐述了UASB的快速启动经验,验证了UASB CASS工艺处理高浓度酿酒废水是可行的。 相似文献