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本文在分析制革综合废水达标治理技术关键的基础上,提出了用钢管酸洗废液对制革综合废水进行预处理,并剖析了其节省成本和提高处理效果的原因。 相似文献
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皮革加工废水是水环境污染的重污染源之一,制革废水污染成分众多,废水量大,污染浓度高,对环境污染严重。制革废水防治任务艰巨,除加大监管力度外,如再引入高新技术,实施制革废水脱铭、脱硫和其它污染的综合整治,可以有效地防治废水污染,提高整治质量。 相似文献
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制革废水处理技术研究进展 总被引:1,自引:0,他引:1
针对制革工业废水组成复杂、污染严重的特点,介绍了目前分隔处理单项制革废水技术,物化法和生物法相结合的综合废水处理技术,并且提出了制革废水处理技术的发展方向. 相似文献
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制革工业废水治理技术探讨 总被引:2,自引:1,他引:1
制革工业是轻工业主要污染源之一。全国每年约排放3000多万吨制革废水,对环境的危害较为严重。制革生产过程中,根据各工序的不同,使用多种化工原料及助剂(详见表),因而产生多股不同类型的废水,如脱脂废液、脱毛浸灰废水、铬鞣废液、染色废水及其它洗涤废水(综合废水)等。这些废水中含有大量的蛋白质、脂肪酸、丹宁、皮渣等易腐败的有机物以及硫化 相似文献
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本文从制革废水的来源和水质特征出发,概述了制革废水的传统处理技术和制革废水处理的新技术;研究了废水处理中存在的问题,并提出了有效的解决方法。最后总结了在新形势下制革工业污染减排的要求。 相似文献
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A limiting factor for the reuse and recycling of treated tannery wastewater for irrigation and other uses is the high salt content, which persists even after conventional treatment. Reverse osmosis (RO) membrane treatment has been shown to significantly reduce the salt contents of tannery effluents. However, the high organic content of tannery effluent leads to rapid scaling and biofouling of RO membranes with a consequent reduction in flux rates and performance. Membrane bioreactors (MBR) have been shown to be highly effective in the removal of organic pollutants and suspended solids from tannery effluent. This research investigated the use of a combined MBR and RO treatment process to treat tannery effluents to an acceptable level for irrigation purposes. The MBR was operated at 17-20 h retention time, at a F/M ratio of 0.52 kg COD x kg SS(-1) x day(-1) and a volumetric loading rate of 3.28 kg COD x m(-3) x day(-1). This treatment reduced the COD, BOD, and ammonia concentrations of the effluent by 90-100%. The MBR was shown to be an excellent pretreatment prior to RO technology, due to the high removal efficiency of organic compounds and suspended solids, with average concentrations of 344 mg x L(-1) COD and 20 mg x L(-1) BOD achieved in the permeate. RO treatment reduced the salt content of the MBR permeate by up to 97.1%. The results of the research demonstrated that the MBR system developed was appropriate for the treatment of tannery effluents and, in combination with the RO treatment, reduced the salt content to acceptable levels for irrigation. The MBR pretreatment reduced bio-fouling and scaling of subsequent RO treatment and improved the overall performance of the RO unit. It is believed that this is the first investigation of a combined MBR and RO treatment for tannery effluents. This research provided data for an outline design of a full-scale MBR and RO plant with a treatment capacity of 5000 m3 per day for mixed tannery effluents. 相似文献
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Carrousel氧化沟技术处理制革废水工程实例 总被引:2,自引:0,他引:2
Carrosel氧化沟工艺处理制革废水,具有耐高有机负荷、耐高毒性负荷,耐高盐负荷冲击能力的特点,制革废水经处理后各项指标能达到GB8978-96《污水综合排放标准》二级标准。 相似文献