共查询到19条相似文献,搜索用时 109 毫秒
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为提高Carrousel氧化沟的脱氮能力,对长沙第二污水处理厂的Carrousel氧化沟工艺进行了现场测试,研究了氧化沟中流速、溶解氧以及污泥浓度在不同曝气机开启条件下的分布变化特征,并分析了其对同步硝化反硝化过程发生的环境条件的影响.结果表明,流速、溶解氧以及污泥浓度的空间分布特征受曝气机的开启条件影响显著,沟内溶解氧浓度随时间变化较大.开启5台曝气机时,溶解氧和流速均偏高,污泥混合更加均匀,开启3台曝气机时中沟段存在流速过低区域(<0.15m/s);适当降低曝气机开启台数,并根据系统条件变化动态调节,可以为实现氧化沟同步硝化反硝化过程创造较好的工艺条件. 相似文献
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结合多年的污水处理厂运行管理经验进行Carrousel 2000氧化沟的设计是经济、可靠、实用的.在氧化沟中通过潜水推进器与转碟曝气机的配合使用,以使设备最大化利用,从而减少能耗、降低运行成本. 相似文献
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复合式Carrousel氧化沟处理城市污水研究 总被引:1,自引:0,他引:1
在Carrousel氧化沟中悬挂半软性填料而组件的复合式氧化沟处理人工合成的城市污水,通过小试研究,考察了复合式氧化沟在不同的HRT时运行效能和特性,分析了复合式氧化沟工艺在污染物去除方面的优势。试验表明,当HRT从55h减少到10h,COD去除率从99.1%减少到86.6%,BOD5去除率从99.4%下降到92.8%,氨氮去除率从98%减少到83.0%;当复合式氧化沟在HRT=20h的条件下运行,进水COD、BOD5和氨氮分别为125.3~492mg/L,56.26~249.44mg/L,20~32.91mg/L,去除率分别为90.2%~97.0%,94.4%~99.3%,90.1%~98.7%。复合式Carrousel氧化沟耐冲击负荷能力强,各类污染物的去除效率很强。 相似文献
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介绍Carrousel氧化沟系统处理某纸厂造纸中段废水设计与运行情况,以及存在问题与建议。 相似文献
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结合多年的污水处理厂运行管理经验进行Carrousel 2000氧化沟的设计是经济、可靠、实用的.在氧化沟中通过潜水推进器与转碟曝气机的配合使用,以使设备最大化利用,从而减少能耗、降低运行成本. 相似文献
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为了提高氧化沟单沟系统的脱氮能力,通过现场测试对Carrousel 氧化沟单沟系统内部溶解氧(DO)的分布、传输特性进行了研究,通过中试试验对氧化沟适宜同步硝化反硝化过程发生的DO条件进行了研究.结果表明,沟内DO环境受曝气机的开启状态和进水负荷日动态变化的影响显著,DO 的分布和输移过程的推流特性有利于同步硝化反硝化过程的发生,沟内适宜同步硝化反硝化过程发生的好氧区域空间比例为0.3~0.5,并随着水力停留时间缩短而逐渐增大. 相似文献
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氧化沟污水处理技术的发展及在煤矿中的应用 总被引:1,自引:0,他引:1
本文概述了氧化沟污水处理技术的发展,技术特征、分类、根据煤矿生活污水的特点,论述了采用氧化沟技术处理污水的合理性,提出了适合煤矿生活污水的氧化沟工艺流程,主要的设计技术参数。 相似文献
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An innovative integrated oxidation ditch with vertical circle (IODVC) for wastewater treatment 总被引:2,自引:1,他引:1
The oxidation ditch process is economic and efficient for wastewater treatment, but its application is limited in case where land is costly due to its large land area required. An innovative integrated oxidation ditch with vertical circle(IODVC) system was developed to treat domestic and industrial wastewater aiming to save land area. The new system consists of a single-channel divided into two ditches(the top one and the bottom one by a plate), a brush,and an innovative integral clarifier. Different from the horizontal circle of the conventional oxidation ditch, the flow of IODVC system recycles from the top zone to the bottom zone in the vertical circle as the brush is running, and then the IODVC saved land area required by about 50% compared with a conventional oxidation ditch with an intrachannel clarifier. The innovative integral clarifier is effective for separation of liquid and solids, and is preferably positioned at the opposite end of the brush in the ditch. It does not affect the hydrodynamic characteristics of the mixed liquor in the ditch, and the sludge can automatically return to the down ditch without any pump. In this study, experiments of domestic and dye wastewater treatment were carried out in bench scale and in full scale, respectively. Results clearly showed that the IODVC efficiently removed pollutants in the wastewaters, i.e., the average of COD removals for domestic and dye wastewater treatment were 95 % and 90%, respectively, and that the IODVC process may provide a cost effective way for full scale dye wastewater treatment. 相似文献
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简要介绍了长炼第二污水处理场的工艺流程,同时对污水处理场的新工艺-韦姆柯浮选机、水解池、奥伯尔氧化沟的机理及特色作了描述,并着重介绍了奥伯尔氧化沟的运行特点。 相似文献
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Numerical simulation of a combined oxidation ditch flow using 3D k-εturbulence model 总被引:1,自引:0,他引:1
The standard three dimensional(3D) k-ε turbulence model was applied to simulate the flow field of a small scale combined oxidation ditch. The moving mesh approach was used to model the rotor of the ditch. Comparison of the computed and the measured data is acceptable. A vertical reverse flow zone in the ditch was found, and it played a very important role in the ditch flow behavior. The flow pattern in the ditch is discussed in detail, and approaches are suggested to improve the hydrodynamic performance in the ditch. 相似文献