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随着工业园区数量的增加,园区内各类污染负荷汇集到径流雨水中,对周边水体造成严重污染,需采取措施进行治理。以湖北省荆州市某工业园区为研究对象,建立SWMM模型,围绕研究区域概化、模型参数确定和率定等方面验证模型的可靠性。根据园区地理位置建立初期雨水截流调蓄池概化模型,选用智能一体化截流提升井收集初期雨水;采用湖北省沙市暴雨强度公式和芝加哥雨型,合成不同重现期下的设计降雨过程线,并计算不同重现期下的初期雨水截流调蓄池容积。研究结果表明,各重现期下初期雨水截流效率均达到了40%以上,说明初期雨水截流调蓄池功效良好。 相似文献
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初小雨径流污染控制已成为茅洲河流域由旱季水质达标转向雨季水质达标的关键因素之一。深圳市光明区坚持“分散调蓄、三水分离”的治水理念和“源头收集、过程调蓄、末端处理”的初小雨污染控制思路,基本建成污水、雨水和初小雨三套排水系统,初步实现了初小雨污染的源头削减与控制,切实为茅洲河流域的水环境质量提升和雨水资源综合利用提供有力支撑,在水环境整治中发挥关键作用。总结该工程的初小雨截流标准、截流系统、处理系统和调度运行等经验,可为类似工程提供参考。 相似文献
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范雪美 《建设科技(建设部)》2014,(6):138-139
本文以某一小规模排水系统改造设计的思路和过程,简要阐述新建居住组团如何治理排涝难题,提出运用截污干管截流污水、建设抗内涝排洪渠、利用现状景观湖作雨水调蓄、排涝与美化景观结合等的措施可达到小区域防涝的作用的理论。 相似文献
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邯郸市某公园内雨水调蓄池的主要作用是截流储存该服务区的初期雨水,以减少泵站的雨天排河水量和排河负荷。论文详细介绍了调蓄池容积的计算方法以及调蓄池池体、池底和进出水系统的设计方法。 相似文献
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合肥市老城区初期雨水污染现状与调蓄策略 总被引:2,自引:1,他引:1
通过对合肥市老城区排水系统现状及初期雨水污染现状的分析,提出了现状排水系统存在的问题及初雨污染情况.针对城市初期雨水产生的过程及其特性,结合合肥市20多年的降雨资料,对城市初期雨水收集与处理方法进行分析,得出如何选取调蓄标准及效益预测,为控制城市河道及受纳水体初雨污染、改善城市水环境状况提供解决思路,给相关工程提供一定的参考. 相似文献
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合肥市中心城区初期雨水径流污染问题突出,已成为影响地表水环境质量的主要因素之一。在排水系统末端设置调蓄池,可经济有效地控制初期雨水径流污染,降低面源污染对受纳水体水质的影响。以合肥市清一冲、清二冲初期雨水调蓄池设计为例,从设计规模、总体布置形式、进出水设计、冲洗系统设计和除臭设计等5个方面对调蓄池的工艺设计进行阐述,并对调蓄池运行模式和工程设计特点进行分析介绍,旨在为同类初期雨水调蓄池的设计和运行管理提供参考。 相似文献
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分析了导致城市水环境恶化的主要原因,通过对常州住宅小区不同下垫面类型径流水质的测定,探讨了径流水质指标及其随降雨历时的响应关系,为雨水调蓄规模的确定、初期雨水污染控制措施的制定提供参考依据。 相似文献
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为了解决沈阳市水资源短缺、城市洪涝灾害、生态环境等问题,对雨水收集方式作了分析研究,借鉴国内外雨水收集成功经验,提出沈阳市可采用建下凹式绿地和修建雨水调蓄池为主要雨水收集方式,建下凹式绿地,雨水渗蓄率最大达到43%;修建雨水调蓄池可将原有合流制排水系统的截留倍数提高到2以上。 相似文献
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The efficiency of solar disinfection (SODIS), recommended by the World Health Organization, has been determined for rainwater disinfection, and potential benefits and limitations discussed. The limitations of SODIS have now been overcome by the use of solar collector disinfection (SOCO-DIS), for potential use of rainwater as a small-scale potable water supply, especially in developing countries. Rainwater samples collected from the underground storage tanks of a rooftop rainwater harvesting (RWH) system were exposed to different conditions of sunlight radiation in 2-L polyethylene terephthalate bottles in a solar collector with rectangular base and reflective open wings. Total and fecal coliforms were used, together with Escherichia coli and heterotrophic plate counts, as basic microbial and indicator organisms of water quality for disinfection efficiency evaluation. In the SOCO-DIS system, disinfection improved by 20–30% compared with the SODIS system, and rainwater was fully disinfected even under moderate weather conditions, due to the effects of concentrated sunlight radiation and the synergistic effects of thermal and optical inactivation. The SOCO-DIS system was optimized based on the collector configuration and the reflective base: an inclined position led to an increased disinfection efficiency of 10–15%. Microbial inactivation increased by 10–20% simply by reducing the initial pH value of the rainwater to 5. High turbidities also affected the SOCO-DIS system; the disinfection efficiency decreased by 10–15%, which indicated that rainwater needed to be filtered before treatment. The problem of microbial regrowth was significantly reduced in the SOCO-DIS system compared with the SODIS system because of residual sunlight effects. Only total coliform regrowth was detected at higher turbidities. The SOCO-DIS system was ineffective only under poor weather conditions, when longer exposure times or other practical means of reducing the pH were required for the treatment of stored rainwater for potable purposes. 相似文献
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Use of rooftop rainwater as a source of drinking water in developing countries is increasing. However, scepticism about the potential of this source and the associated health risks is still prevalent among water planners. A free listing and a household survey among 120 households was conducted in the hills of Nepal to examine the performance of rainwater harvesting systems. Users perceive few health risks and in contrast, reported a wide range of benefits, including health benefits associated with the consumption of rainwater. Water quality testing results generally demonstrate good water quality but confirm that appropriate operation and maintenance practices are critical to ensure the collection of good quality water. Deficiencies in technical design and construction, lack of awareness, no market for spare parts and the inability of vulnerable households to maintain the system pose a risk to the collection and storage of safe water and to the long‐lasting performance of the systems. 相似文献
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初期雨水调蓄池在城市排水系统中的应用 总被引:1,自引:0,他引:1
随着对生态环境的重视,很多城市已经对初期雨水进行了控制,在建设雨水泵房的同时设置初期雨水调蓄池,可减少初期雨水直接排河造成的污染。结合上海某泵站的建设实例,介绍了城市排水系统中初期雨水调蓄池的布置形式、容积计算、冲洗方式、运行模式等,对今后同类项目初期雨水调蓄池的应用具有借鉴意义。 相似文献