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对蛋氨酸生产废水的处理方法进行了试验研究,采用化学氧化-生化-絮凝的处理方法,可使处理后的排水COD≤120mg/L,BOD5≤10mg/L,符合排放标准,另外,对其它的处理方法也进行了探讨。 相似文献
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锅炉酸洗废水具有排放量大、污染物浓度高和处理难度极大的特点。为实现酸洗废水处理后复用,不外排,分析了河源电厂2×600 MW超超临界机组酸洗废水成份,进行了小型模拟处理试验,探索了降低废水中金属离子含量、COD和浊度的方法。根据试验结果,采用稀释、pH调整、曝气、絮凝、沉淀及机械过滤的方法对锅炉酸洗废水进行处理,处理后的清水作为脱硫系统的工艺补充水。脱硫系统排出的废水采用蒸发结晶工艺进行处理,处理后的冷凝水作为冷却塔补充水回收利用,最终实现零排放,可为火电厂酸洗废水的处理利用提供参考。 相似文献
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石灰石-石膏湿法脱硫工艺进行烟气脱硫过程产生了脱硫废水,脱硫废水经常规工艺处理之后,水质有了改善,但未彻底治污,有必要进行再处理。介绍了目前正在采用的几种脱硫废水再处理的方法,并分析了其优缺点。 相似文献
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介绍了脱硫废水引入渣溢水系统的综合处理效果,对处理后水质指标及影响因素进行了长期跟踪分析,结果表明:处理后各水质指标均符合废水回用或排放标准,脱硫废水引入渣溢水系统处理是可行的。 相似文献
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本文介绍安阳电厂工业废水处理与回收利用的试验研究中用混凝剂处理电厂工业废水悬浮物试验,以及用气浮法处理废水中油的试验结果,从而确定了电厂工业废水处理使用工艺。 相似文献
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超临界水氧化法处理有机污染物 总被引:13,自引:1,他引:13
介绍了超临界水氧化法处理有机污染物的基本原理,工艺流程和应用实例及使用范围,对比分析了超临界水氧化法与焚烧法处理有机污染物的技术特点,经济实用性,指明了超临界水氧化法作为一种有效的有机污染物处理方法,在化工环保等领域将具有广阔的应用前景。 相似文献
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采用旋流萃取分离技术处理某炼油厂常减压装置电脱盐废水(初始废水含油量约为5 000 mg/L),优化了废水除油的工艺条件。试验结果表明,废水除油的最佳工艺条件为:旋流萃取分离机中心转子的转速960 r/min、废水流量2 000 L/h、废水温度80℃。废水经旋流萃取分离后,废水的含油量小于200 mg/L,废水除油效果较好;分离后油相的含水量约为0.1%(w),盐质量浓度小于20 mg/L,可回注到常减压装置原料罐循环利用。对于2 Mt/a的常减压装置,采用旋流萃取分离技术后,每年可减少支出100.4万元。 相似文献
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Decolorization and estrogenic activity of colored livestock wastewater after electrolysis treatment 总被引:1,自引:0,他引:1
Hotaka Kai Yasuhiro Ishibashi Taiki Mori Hiroshi Ishibashi Isao Kawaguchi Hiroki Ohwaki Takehiro Takemasa Koji Arizono 《Journal of Material Cycles and Waste Management》2010,12(2):128-135
Livestock wastewater is treated by activated sludge treatment. Untreated livestock wastewater has high estrogen activity because
animal excreta contains estrogen. When activated sludge treatment is applied, the estrogen activity declines or is lost. However,
the color of treated livestock wastewater is deep brownish-red because of the decomposition of organic compounds or the synthesis
of metabolites. Discharging colored wastewater to the environment could cause some problems, so it is necessary to decolorize
colored wastewater before it is discharged. It has been suggested that electrolysis decolorization technology is suitable
for treating colored wastewater; however, the process produces volatile organic compounds (VOCs). In fact, little research
has been conducted with reference to estrogen activity in wastewater that has undergone electrolysis, especially on the contribution
of the electrolysis decolorization process to estrogen activity, i.e., the possibility of resynthesis of some substance with
estrogen activity due to resolved and metabolized colored components. In this study, the concentration of VOC was measured
for various electrolysis conditions, and estrogen activity was examined using a yeast two-hybrid assay. From the results,
decolorization of colored livestock wastewater by electrolysis was possible, and the VOC generation during electrolysis could
be controlled depending on the electrolysis conditions. Estrogen activity in colored livestock wastewater disappeared on electrolysis
decolorization. 相似文献
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对用蓖麻的生产癸二酸过程中产生的甲酚废水的各种处理方法进行了评述。在这些处理方法中,QH-1型络合萃取剂萃取法的处理效果最佳,废水经处理后酚浓度可达到国家排放标准。该法的投资较少,且回收的甲酚钠可回用于生产。经济上较合理,是一种比较理想的处理方法。 相似文献
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The aim of this paper was to combine water pinch analysis and oxygen pinch analysis for more cost-effective wastewater treatment. Emphasis was placed on energy and resource saving. The variables that affect the cost of wastewater treatment are the quantity and the quality of the wastewater to be treated. The quantity of the wastewater to be treated was directly proportional to the treatment cost. The quality of the wastewater was inversely proportional to the treatment cost. It was found that the quantity of wastewater treated could be decreased by the application of water pinch analysis. This application also had a negative effect on the quality of the wastewater. The effect of the application of water pinch analysis decreased the quality of the wastewater being treated, hence increasing the treatment cost. This effect was negated by the application of a combined water–oxygen pinch analysis. The quality of the wastewater determined the amount of oxygen required. The oxygen pinch concept addresses this problem and in addition gives even more information about the health of the working micro-organisms. A 22.6% reduction in wastewater quantity was realised applying combination of both pinch concepts. A reduction of 23.44% in the oxygen requirement for the biodegradation of wastewater was achieved. An important feature of the combined water–oxygen pinch analysis is the balance obtained between the quantity of wastewater produced and the quality of this wastewater. 相似文献
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以二甘醇单丁醚-二甘醇单乙醚-对二甲苯体系为萃取剂,0.1 mol/L的Na OH溶液为反萃取剂,采用三级萃取-反萃取法处理4,4’-二氨基二苯乙烯-2,2’-二磺酸氧化废水,考察了萃取和反萃取的影响因素,并对废水中的可用有机资源进行了回收。实验结果表明:在V(二甘醇单丁醚)∶V(二甘醇单乙醚)=1∶3、V(醇醚)∶V(废水)=2∶5、V(对二甲苯)∶V(废水)=1∶5的最佳萃取条件下,经三级萃取工艺处理后,平均COD去除率达92.0%、平均脱色率达96.4%、BOD5/COD0.3,可生化性明显增强;最佳反萃取条件为V(Na OH溶液)∶V(有机相)=13∶24、反萃取温度60℃;平均总硝基化合物回收率达88.9%,平均萃取剂回收率达96.7%,回收的萃取剂可循环使用。该工艺对废水处理的综合成本约为700~1 000元/t。 相似文献
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铜矿酸性废水氧化钙中和处理装置的改造 总被引:2,自引:0,他引:2
介绍了用氧化钙二次中和沉淀法处理铜矿酸性废水的工艺流程、主要设备和处理效果。针对矿山不断开采带来的废水水质变化和处理装置存在的新问题 ,对工艺路线、斜板沉淀池、石灰消和机等进行了改造。改造后的运行结果表明 ,出水水质达到GB8978— 1996二级排放标准 ,节约运行费用 15万元 /a ,沉淀池大修期从 4a延长到 6a ,减少石灰用量 8% ,增加废水处理量 1.5× 10 5m3 /a。 相似文献