共查询到19条相似文献,搜索用时 109 毫秒
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化粪池是房屋建筑中不可缺少的配套设施。化粪池主要将人体排出的大便贮存起来,让它自然分解,达到清洁、卫生的作用。我利用化粪池的原理解决了一个实际问题。 相似文献
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简述了化粪池的使用现状,分析了化粪池使用中存在的问题,介绍了化粪池的布置和设计,展望了化粪池的发展趋势,指出化粪池的设置应与城市污水处理统筹考虑。 相似文献
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以北京市轨道交通亦庄线台湖车辆段采用的玻璃钢化粪池为例,阐述了玻璃钢化粪池的施工方法,并对钢筋混凝土化粪池和玻璃钢化粪池在施工方法、工程进度、环境污染、经济性等方面进行了对比。 相似文献
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论述了玻璃钢化粪池安装施工技术,利用整体一次吊装就位和内外同步逐级加压对称夯填法,保证了化粪池基础回填土的密实度和均匀性,避免化粪池在安装和使用过程中的变形损坏,保证了安装质量。 相似文献
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取消化粪池与温室气体减排 总被引:3,自引:0,他引:3
在城镇污水处理厂正在普及的地区,化粪池的继续使用导致了温室气体的大量产生和影响污水处理厂运行等问题,我国已有部分地区在试点取消化粪池的工作。从温室气体减排的环境效益和经济效益角度,强调了污水处理厂服务地区取消化粪池的必要性。 相似文献
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化粪池设计和施工中不应疏漏的中华人民共和国国家标准《建筑给水排水设计规范GBJ15—88)中第3·8·5条中,对化粪池作了如下要求:“化粪池格与格之间和化粪池与进口连接井之间应设通气孔洞。”其目的是将化粪池内有机物在厌氧发酵过程中所产生的有害气体和可... 相似文献
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简述了化粪池的使用现状,分析了化粪池使用中存在的问题,详细介绍了化粪池的布置与设计,展望了化粪池的发展趋势,指出化粪池的设置是一个系统工程,应与城市污水厂的设置统筹考虑。 相似文献
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Reliability analysis of wastewater treatment plants 总被引:1,自引:0,他引:1
This article presents a reliability analysis of 166 full-scale wastewater treatment plants operating in Brazil. Six different processes have been investigated, comprising septic tank+anaerobic filter, facultative pond, anaerobic pond+facultative pond, activated sludge, upflow anaerobic sludge blanket (UASB) reactors alone and UASB reactors followed by post-treatment. A methodology developed by Niku et al. [1979. Performance of activated sludge process and reliability-based design. J. Water Pollut. Control Assoc., 51(12), 2841-2857] is used for determining the coefficients of reliability (COR), in terms of the compliance of effluent biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), total nitrogen (TN), total phosphorus (TP) and fecal or thermotolerant coliforms (FC) with discharge standards. The design concentrations necessary to meet the prevailing discharge standards and the expected compliance percentages have been calculated from the COR obtained. The results showed that few plants, under the observed operating conditions, would be able to present reliable performances considering the compliance with the analyzed standards. The article also discusses the importance of understanding the lognormal behavior of the data in setting up discharge standards, in interpreting monitoring results and compliance with the legislation. 相似文献
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复合式竹丝填料生物反应器处理化粪池出水 总被引:4,自引:0,他引:4
为寻找适合化粪池出水的处理工艺,采用批式试验研究了复合式竹丝填料生物反应器对化粪池出水中COD、SS的去除效果。结果表明:复合式竹丝填料生物反应器能有效去除化粪池出水中的COD和SS,平均去除率分别达到了85.4%和90%以上;复合式竹丝填料生物反应器的微生物数量较多、微生物链较长、微生物种群丰富;复合式竹丝填料生物反应器中的污泥增加量极少。将复合式竹丝填料生物反应器内的活性污泥和竹丝分开组成两个独立的生物反应器并处理化粪池污水,结果发现,竹丝生物膜反应器能在短期(18h)内超过活性污泥反应器的处理效果,且竹丝生物膜反应器的产泥量很低。可见,竹丝填料较为适合处理化粪池出水,是一种价格低廉、污染少、运行管理费用较低的良好填料。 相似文献
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Experiments were carried out to investigate the feasibility of septic tank sludge (septage) disposal into pilot-scale waste recycling ponds for the production of algae and fish. A septage loading of 100 kg COD ha−1 day−1 to four 4-m2 single-stage ponds resulted in the production of algal biomass and dissolved oxygen in the pond water, suitable for Tilapia growth. Some microbiological investigations of this waste recycling scheme were undertaken using ten earth ponds (each with the dimensions of 20 × 10 × 1.3 m: length × width × depth). It was found that the densities of coliform bacteria and bacteriophages in the pond water and sediment tended to increase with increased septage loadings and loading periods. The ponds fed with septage at the loading of 100 kg COD ha−1 day−1 were found to contain higher densities of these microorganisms than those of the control pond without septage feeding. The possible public health impact resulting from this practice was assessed. 相似文献
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H. A. C. MONTGOMERY PhD CChem FRSC P. J. SHAW BSc DUC MPhil MIGeol R. V. CHEESEMAN BSc CChem FRSC 《Water and Environment Journal》1988,2(4):361-364
B ucket-type samplers were installed in the unsaturated zone to intercept septic tank effluent descending through the Chalf at Snowdown, Kent. Better than 90 per cent removal of BOD and COD, and of the order of 99 per cent removal of coiform bacteria, were observed after downward percolation through 2.1 m of Chalk. Nitrification of ammonia had begun at that depth, but not at intermediate depth. The results, though limited, suggest that septic tank effluent is purified in the Chalk in a similar way to settled sewage. 相似文献
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方晞 《建筑科学与工程学报》1994,(3)
叙述了用气浮地→厌氧塘→兼性塘处理造纸废水的试验与设计。经运行后测定,出水达到了天津市水污染物排放标准的要求。气浮池采用30%的回流比,提高了处理效率,每天可回收纸板原料8.4~10.8t。 相似文献