共查询到20条相似文献,搜索用时 140 毫秒
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浙江某工业园的废水主要为合成制药废水,原有处理工艺为水解酸化+CASS工艺,由于原有设计标准较低导致出水水质不能达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的二级标准。为了提高出水水质,该污水处理厂拟采用MBR工艺替代CASS工艺进行提标改造。经过3个月的运行调试,出水水质稳定达到二级标准。针对膜污染特征及清洗对策进行了考察性试验,结果表明膜经过维护性清洗后可以恢复到最初的跨膜压差状态。 相似文献
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介绍了某经济开发区污水处理厂工程,根据纺织印染废水污染物浓度高、可生化性差、水质水量多变的特点,结合当地的条件,采用调节/水解酸化/改良Carrousel/混凝沉淀/过滤工艺.工程运行表明,处理效果良好,出水水质达到了<城镇污水处理厂污染物排放标准>(GB18918-2002)的一级A标准. 相似文献
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Performance evaluation of different membrane types in the textile mercerization wastewater treatment
This study investigates the performance of three ultrafiltration membranes, i.e. a submerged polyethylene (PE) hollow fibre membrane, a multibore polyethersulfone (PES) membrane and a tubular multichannel ceramic membrane in the textile mercerization wastewater treatment. Experiments were carried out on two laboratory dead end membranes and on a cross flow membrane set‐up using wastewater with and without the addition of MgCl2 as a coagulant. Investigation into energy consumption was also carried out. According to the obtained results, the submerged membrane could be used as the pretreatment of mercerization wastewater to significantly reduce the amount of suspended solids, to remove organic carbon and to decrease turbidity. The results showed that the tested membranes could be used for the treatment of wastewater from the textile mercerization process in terms of permeate quality. The cross‐flow ultrafiltration consumes far more energy than the dead‐end process. 相似文献
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以天津市某污水厂SBR工艺的调试运行为例,阐述了SBR工艺的污泥培养过程,并通过试运行期进出水水质的对比分析,得出了在进水有机负荷偏低的情况下,适用于该污水厂的SBR工艺的运行参数,即进水1h、曝气4h、静沉2h、排水1h、运行周期为8h的运行方式。在该运行条件下,出水水质能完全达到设计要求,可为利用生物法处理低负荷污水的工艺设计和运行提供参考和经验。 相似文献
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This technical note summarizes the results of a textile wastewater treatment process aiming at the destruction of the wastewater's color by means of coagulation/flocculation techniques using ferrous sulfate and/or lime. All the experiments were run in a pilot plant that simulated an actual industrial wastewater treatment plant. Treatment with lime alone proved to be very effective in removing the color (70-90%) and part of the COD (50-60%) from the textile wastewater. Moreover, the treatment with ferrous sulfate regulating the pH in the range 9.0+/-0.5 using lime was equally effective. Finally, the treatment with lime in the presence of increasing doses of ferrous sulfate was tested successfully, however; it proved to be very costly mainly due to the massive production of solids that precipitated. 相似文献
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某危废处置企业因处置危废来料变化及生产工艺调整,车间生产废水与设计水质发生变化,导致废水站原有处理工艺无法满足实际需求。针对实际生产废水特点及处理要求,对废水站进行了技术改造,将前端物化预处理改造为针对高浓度废水的Fenton预处理,生化池末端的二沉池改造为好氧池与MBR池,将消毒池改为深度氧化池。实践表明,改造后运行效果稳定,出水水质达到设计出水要求。 相似文献
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微电解/UASB/接触氧化法处理高浓度日用化工废水 总被引:2,自引:1,他引:2
介绍了微电解/UASB/接触氧化法处理高浓度日用化工废水的工程设计、调试及运行情况,经处理后出水各项指标优于广东省《水污染物排放限值》(DB44/26-2001)的一级标准(第二时段),且系统运行稳定、处理效果好、运行费用低。 相似文献