共查询到19条相似文献,搜索用时 78 毫秒
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射流自吸式生物曝气塔处理废水的研究 总被引:2,自引:0,他引:2
用射流自吸式生物曝气塔对酒精生产废水及催化剂生产废水的处理进行了试验研究。与普通活性污泥法曝气池相比,射流自吸式生产曝气塔具有处理负荷高,停留时间短,处理量大的特点,是一种新型的生物反应器。 相似文献
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本文介绍射流曝气活性污泥法处理城市污水的试验研究结果。该法是将污水、空气和活性污泥同时经过射流曝气器,使其在高速湍流的作用下,强化了氧的吸收过程,同时发挥了活性污泥生物学特性的内在潜力,从而加快了基质的生化反应过程。该法具有曝气时间短,有机负荷高,剩余污泥量少和处理效果好等特点。 相似文献
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螺旋式射流曝气器是机械曝气与射流曝气相结合的新型曝气装置。利用螺旋原理,使空气吸入水中,并在叶轮强烈搅拌下,把空气分散成细泡溶解到水中,同时,由于叶轮的推水作用,加强了池中水的循环,充氧均匀,具有机械与射流曝气两者的特点,而且结构简单、能耗低、溶氧量大,是较理想的曝气装置。 相似文献
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采用纯氧曝气法处理工业废水及城市污水,具有耐冲击负荷强、产生污泥量少,BOD_5、COD去除性能好,耗用动力少,处理水质好等优点。对于高浓度有机废水的处理,尤为适用。 相似文献
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本文基于准北电厂工业废水处理回收的实践,探讨凝聚剂在火力发电厂工业废水处理中的应用,提出混凝法用于低浊度废水处理中的关键问题及应采取的措施。 相似文献
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Determination of Enterobacteria in Air and Wastewater Samples from a Wastewater Treatment Plant by Epi-Fluorescence Microscopy 总被引:1,自引:0,他引:1
Bacteria, fungi and viruses are often encountered in aerosols and they can be pathogenic or cause allergies following inhalation.
Wastewater treatment facilities have been found to generate bioaerosols, which are transported by the prevailing winds downstream
to areas that can be up to several hundred meters away. Bioaerosol formation has a significant effect on air quality in the
vicinity of the treatment plants. The amount and characteristics of the formed bioaerosols depend on the aeration system employed
at the aeration tank of the wastewater treatment facility. In this work we determined Enterobacteria in air and wastewater
samples at the main wastewater treatment facility of the city of Chania (Crete, Greece). Concentrations of airborne bacteria
were measured near the aeration and sedimentation tanks. Samples of airborne bacteria were taken by using Merck’s MAS-100
bioaerosol collector followed by incubation and enumeration of the colonies. The use of different growth media enabled the
separation and enumeration of several classes of microorganisms. As part of this study, Enterobacteria in air samples were
also determined by filtration sampling followed by analysis of the collected microorganisms using DAPI staining to determine
total cell counts (both viable and non-viable cells). Fluorescence in situ hybridization (FISH) with specific 23S rRNA probes
was also used in order to identify specific groups of microorganisms (well known pathogens) present in the bioaerosols. The
analysis was also performed in wastewater taken from the aeration and secondary sedimentation tanks in an effort to correlate
the airborne bacteria with those in the wastewater. 相似文献
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喷射溶气回流浮选工艺处理含油废水 总被引:8,自引:0,他引:8
采用喷射溶气回流浮选工艺处理含油废水,替代原来的全加压溶气浮选工艺,提高了浮选过程的处理效果,增强了系统的抗负荷冲击能力,浮选出水油含量由原来的〈40mg/L降至〈20mg/L,COD由原来的〈150mg/L降至〈110mg/L。 相似文献
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曝气催化铁内电解法预处理混合化工废水 总被引:8,自引:0,他引:8
采用曝气催化铁内电解法对上海某工业污水场的进水进行预处理,降低了后续生化处理中难降解有机物的负荷,并较大程度地去除了正磷酸盐。废水中的有机物及正磷酸盐在两周的稳定运行中平均去除率分别达到52%和70%。废水经预处理后,pH平均上升0.5。 相似文献
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MBBR工艺及其运行中易出现问题的探讨 总被引:3,自引:0,他引:3
简述了MBBR工艺的原理和特点,介绍了MBBR工艺在处理高、低负荷污水及其在脱氮方面的应用研究,对该工艺在运行中出现的问题及解决方法进行了初步探讨,并指出了MBBR工艺的发展方向。 相似文献
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针对炼油废水缺乏碱度而硝化效能受限问题,以CO_2曝气处理后的改性碱渣废水为碱度补充剂,按一定配比加入炼油废水好氧阶段以强化硝化效能。实验结果表明:经流量为1 L/min的CO_2连续曝气处理5 h后,碱渣废水p H可降至7.2~7.8,钙元素质量浓度可降低90.65%,并去除了部分汞、砷等有毒重金属;将该改性碱渣废水以1∶99的体积比加入炼油废水并进行生化处理,COD去除率可达90.2%;相较于未补充碱渣的炼油废水,出水ρ(NO3--N)提高25%~30%,硝化细菌菌群密度增加52%,污泥絮体形态结构未发生改变。 相似文献