共查询到19条相似文献,搜索用时 390 毫秒
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珠三角河涌整治新模式浅探 总被引:1,自引:0,他引:1
珠三角的河涌污染严重,主要是人类活动过烈造成的。虽然政府花巨款大力整治,但旧的治理模式没有取得明显的效果。针对旧模式的难以解决的问题,探讨珠三角河涌整治的新模式。拟推荐使用生物修复技术、流域整治、再配合原来的截污、雨污分流以及关闭重污染企业的新模式。 相似文献
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随着经济的快速发展,大量污染物排入河涌导致河涌水体污染问题日趋严重。采取有效的技术措施治理河涌污染势在必行。结合近年来国内外河涌治理的研究成果,综述了河涌治理中生态恢复技术的原理和特点,并指出今后研究方向。 相似文献
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以白海面涌为研究对象,对河涌污染现状进行调研,分析河涌污染特征,结果显示白海面涌属于重金属和有机物复合型污染类型,结合河涌污染源多且底泥污染严重的实际情况,参考其他城市河涌整治有益经验,提出采取工程措施和非工程措施并举的综合治理模式,旨在为广州市水环境管理提供科学理论依据。 相似文献
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GERALD A. BEST 《Coloration Technology》1974,90(11):389-393
The demand for clean water for industry and for domestic supply is increasing yearly. Many readily accessible supplies are fuh'y exploited and water authorities are now having to consider hitherto-polluted rivers as possible sources for future demand. To meet the demand for clean water and for cleaner rivers which receive the waste from the consumers, a massive amount of expenditure will be required from central and local government and from industry for new water-treatment plants. The legislation covering river pollution and waste-water disposal in Scotland is described, and the particular problem of effluents from the textile industry is discussed. Many workers have demonstrated that waste water from the textile industry can be treated using conventional biological treatment and other techniques and be purified sufficiently to meet the standards imposed by the local authority for discharge into the sewerage system, or by the river purification board for discharge into the rivers or the sea. 相似文献
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武江河是流经韶关市的一条主要河流,也是韶关市区和乐昌市目前唯一的饮用水源。近年来,武江河水环境质量有逐步下降的趋势。在深入细致的调研基础上,广泛收集了相关资料,就武江河水污染的成因进行分析,并就如何改善浈江河水环境质量提出了综合整治的对策。 相似文献
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Since 1998, Japan Soap and Detergent Association has been continuously evaluating the concentrations of four surfactants used in household detergents and fabric conditioners in river surface water: linear alkylbenzene sulfonate (LAS), polyoxyethylene alkyl ether (AE), alkyldimethylamine oxide (AO) and dialkyl dimethylammonium chloride (DADMAC) in Japanese urban rivers, in order to assess the risks of surfactants on aquatic organisms. Surfactant concentrations in the river water in June and September were found to be lower than those in March and December, the season where water temperature is lower, suggesting that the rates of biodegradation in environmental water differ depending on the water temperature. All the measured surfactant concentrations were below the reported predicted no-effect concentration (PNEC) and have been decreasing year by year; suggesting that surfactant risk on aquatic organisms in Japanese rivers is low under current conditions. 相似文献
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旱天放江是造成上海市城区河道污染的主要原因之一。以虬江为研究对象,探究分流制泵站旱天放江后,调水对受纳河道水质的影响。选取放江当天至调水第7 d,分析对比受纳水体上游至下游,各采样断面水体中COD、TP、氨氮以及沉积物中TOC含量的差异。结果表明,放江后和调水连续7 d后,各断面水体中水质检测指标以及沉积物中TOC含量均高于放江前。放江开始至调水第7 d,虬江水体中COD、TP、氨氮含量均呈现先递减后趋向于平稳的趋势,沉积物中TOC含量呈现递增的趋势。受调水作用的影响,上游水体中COD、TP、氨氮以及沉积物中TOC含量均低于下游。 相似文献
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采用石英砂+微滤膜工艺对广州珠江原水进行了试验研究,运行参数为:石英砂滤速为8.0 m/h,微滤膜通量为28.6 L/m2h,结果表明:浊度的去除效果可达到99%以上,出水浊度在0.18~0.396 NTU之间;菌落总数的去除率受原水水质影响较大,总大肠菌群、耐热大肠菌群去除效果可达到100%;新微滤膜经过2次药洗,第38天后之后微滤膜的工作压力稳定在0.14 MPa左右。 相似文献