共查询到20条相似文献,搜索用时 163 毫秒
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采用水解酸化/曝气-间歇曝气(DAT-IAT)工艺处理树脂废水,运行结果表明,该工艺具有耐冲击负荷能力强、运行稳定、处理效果好、运行费用低等优点.处理后的出水达到国家污水综合排放三级标准. 相似文献
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总结了曝气生物滤池的工艺原理、形式和特点以及滤料、进水水质、水力负荷、气水比、反冲洗等因素对滤池运行效果的影响, 回顾了国内外对曝气生物滤池去除各类污染物的最新研究进展, 阐述了该工艺在废水的固体悬浮物(SS)和有机物去除、硝化除氨、反硝化脱氮等方面所具备的优势, 同时指出了传统曝气生物滤池工艺在实际应用中存在的不足之处。本文针对传统滤池在较高的进水有机负荷条件下, 其硝化性能受到明显抑制的情况, 引入了一种在结构、曝气形式及运行方式上进行优化设计的曝气生物滤池工艺——内循环曝气生物滤池, 对其结构组成、运行方式以及工艺特点等作了介绍, 并指出内循环曝气生物滤池系统的硝化性能受进水有机负荷的影响明显减小, 改良后的工艺对各类污染物的去除效果均得到强化。此外, 根据内循环曝气生物滤池的研究现状及自身优点对其在处理高浓度生活污水中的应用作了展望。 相似文献
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对采用AmOn工艺的贵州省桐梓县污水处理厂曝气系统进行改造,将原有效率较低、能耗较高的射流式曝气器,改用为中高压型三叶罗茨鼓风机及池底微孔曝气盘。改善了出水水质、提高了出水达标排放率保障,大大降低了运行电耗,且减轻了曝气设备的维护、维修工作量。 相似文献
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《Computers & Chemical Engineering》2001,25(4-6):585-593
In this paper, dynamic optimisation of small size wastewater treatment plants is studied. The problem is stated as a hybrid dynamic optimisation problem which is solved using a gradient-based method. The aeration policy which minimises the energy consumption and satisfies discharge requirements under specified constraints (process and physical constraints) is then determined. The comparison between usual rule-based control policies and optimised aeration strategies showed that the optimised aeration profiles lead to reductions of energy consumption of at least 30%. 相似文献
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采用新型的气升式陶瓷膜过滤系统处理油田含聚采出水,通过气液两相流替代单一的液相流动,降低了陶瓷膜处理油田含聚采出水过程的能耗,系统考察了曝气孔大小、曝气量和跨膜压差对膜渗透通量的影响。结果表明,采用孔径为微米级的曝气头曝气使高压气体在多通道膜管内的分布更为均匀,进而有效抑制膜污染和浓差极化,延缓通量衰减。当曝气孔径为1 μm时,渗透通量达到最大,且曝气量从300 L·h-1增加到600 L·h-1时,通量显著增加。此外,跨膜压差对膜的渗透通量影响显著,当跨膜压差为0.4 MPa时,渗透通量最佳。陶瓷膜处理油田采出水的出水水质各方面指标数据较为稳定,达到5.1.1回注水标准。最后,计算讨论了气升式陶瓷膜过滤装置的吨水能耗。 相似文献
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文章结合城镇污水处理的流程,从污水提升泵、沉砂池、沉淀池、污泥处理系统等构筑物方面进行了能耗分析并提出了相应的节能途径:同时文章分析了氧化沟、A/O(A^2/O)、百乐克三个常用的处理工艺特点,提出工艺的选择应综合考虑各方面条件,同时兰个工艺都需从曝气供氧方面实现节能。 相似文献
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Development of microbubble aerator for waste water treatment using aerobic activated sludge 总被引:5,自引:0,他引:5
Koichi Terasaka Ai Hirabayashi Takanori Nishino Satoko Fujioka Daisuke Kobayashi 《Chemical engineering science》2011,(14):413
In large-scale waste water treatment plants, the aerobic biochemical reactor is the most important process, where the oxygen supply into the microorganisms often limits the overall waste water treatment rate. On the other hand, several kinds of microbubble distributors have been developed to enrich the oxygen dissolution in water. Therefore, the application of microbubbles for a waste water treatment system was investigated in this study.The oxygen absorption performance of typical microbubble generators was compared with typical bubble generators. To evaluate each bubble generator, the liquid-phase volumetric oxygen transfer coefficient, gas hold-up and power consumption per unit liquid volume were measured in a bubble column attached to each bubble generator. All the microbubble generators allowed the oxygen to dissolve faster than the typical aerators. The spiral liquid flow type microbubble generator had the highest oxygen transfer coefficient even at a low air flow rate although it used more energy than the typical distributors.To improve an industrial waste water treatment system, a novel aeration system utilizing a spiral liquid flow type microbubble generator was proposed in this study. The present system has some advantages such as compact size, portability and fast oxygen dissolution rate. To ensure the performance for organic waste water treatment, the effects of the aeration rate, dissolved oxygen concentration and device properties on the specific consumption rate of model organic waste were investigated. For the novel aeration system, the most suitable conditions to treat organic waste were found. 相似文献