共查询到20条相似文献,搜索用时 125 毫秒
1.
石油钻杆刷镀铜废水处理 总被引:2,自引:0,他引:2
油田钻杆刷镀铜废水的铜离子严重超标,为解决这一问题,应用硫化钠(Na2S·9H2O)化学沉淀法处理工艺及设备处理废水。经监测,处理后的废水符合国家排放标准,具有处理设施一次性投资少,操作方便,处理效果好,处理成本适当等优点。硫化钠化学沉淀法处理刷镀铜废水达到了国家排放标准。 相似文献
2.
本文介绍了SBR法DAT-IAT工艺的特点,针对NH3-N及TN含量高的屠宰废水,采用了改进的“水解酸化+SBR DAT-IAT”组合处理工艺。监测结果表明,工程的处理系统运行稳定,处理效率高,出水的各项指标均达到国家排放标准。 相似文献
3.
4.
5.
采用高效气浮-淹没式生物膜组合工艺处理牛仔布洗漂废水。结合工程实际,介绍牛仔布洗漂废水处理工程的设计和调试情况,工艺实践运行表明,该工艺处理效果好、运行稳定。各项指标均可达到广东省地方标准《水污染物排放限值》(DN44/26-2001)中规定的第二时段一级排放标准。 相似文献
6.
7.
8.
探讨了A/O法合并处理煤转气废水和生活污水的工艺原理及试运行效果。实践证明,该方法是处理高浓度煤转气废水的简单新方法,经处理后的污水可达到国家规定的排放标准。 相似文献
9.
采用文丘里除尘器和麻石水膜除尘器两级除尘,并将除尘废水经沉淀处理和中和后再回用于除尘器,除尘废水闭路循环不外排,有效地控制了工业锅炉中燃煤对大气的污染;使烟尘的排放达到了国家规定标准,同时,也防止了除尘废水对地面水源的污染。较好地解决了麻石水膜除尘器所排放的废水污染问题,除尘废水经净化处理达到了再利用的目的,节约了能源,也为麻石水膜除尘器增添了新的活力,具有较好的环境效益和经济效益。 相似文献
10.
在中国玻璃工业中,普遍存在玻璃制造废水未经处理直接排放的现象。虽然这些废水水质相对化工行业来讲污染较轻,但是由于其排放量大,且排放的废水中含有油类、SS、氟及重金属等的污染物,这些污染物对自然环境和人类的危害是严重的,所以玻璃厂废水在排放前必须经过处理。在这篇文章中,分析了某平板玻璃工厂针对原有废水处理工艺效率低的问题,研究了处理系统的改造更新技术,在增加气浮装置的新系统中,通过一个月的调试和运行,其结果证明增加气浮池能深度处理含油物质,同时可以在一定程度上降低含氟物质带来的污染,处理后出水可达《污水综合排放标准》(GB8978-1996)的二级排放标准,并能用于循环系统,降低用水量,提高企业的经济效益。 相似文献
11.
A review of textile industry: Wet processing,environmental impacts,and effluent treatment methods 下载免费PDF全文
The word “textile” means to weave and was taken from the Latin word “texere.” Nowadays, textiles not only fulfill humankind's basic necessity for clothing, they also allow individuals to make fashion statements. As one of the oldest industries, the textile industry occupies a unique place in India. It is responsible for 14% of the total industrial manufacture in India. However, the textile industry is also considered to be one of the biggest threats to the environment. Pretreatment, dyeing, printing, and finishing operations are among the various stages of the industrial textile manufacturing process. These fabrication operations not only utilize huge quantities of power and water, they also generate considerable amounts of waste. The textile industry utilizes a number of dyes, chemicals, and other materials to impart the required qualities to the fabrics. These operations produce a significant amount of effluents. The quality of effluents is such that they cannot be put to other uses, and they can create environmental problems if they are disposed of without appropriate treatment. This review discusses different textile processing stages, pollution problems associated with these stages, and their eco‐friendly alternatives. Textile wet processing is described in detail, as it is the key process in the industry and it also generates the greatest amount of pollutants in textile processing. The environmental impact of textile effluents is discussed, as textile effluents not only impose negative effects on the quality of water and soil, they also imperil plant and animal health. In this paper, various methods for treating textile effluents are described. Discussion of physical, chemical, biological, and advanced treatment technologies of effluent treatment are included in this paper. 相似文献
12.
Color and chemical oxygen demand (COD) in bleach plant effluents are of concern. Acidified flyash can effectively remove both color and COD from caustic bleach plant effluents. Equally effective, but quicker and easier, is to acidify the effluent to approximately pH 1 and use untreated flyash. Based on maximum color removal, the required contact time is short, about 10 min, and the optimum ash dosage is that amount which raises the pH of the final effluent to about 5. Sufficient color removal is obtained to easily meet Maine's color regulations. Preliminary tests on samples of deionized water spiked with two arochlors of PCB showed high removal efficiency.The major cost of implementing and operating the cleanup procedure will be the cost of the required acid. This might be minimized by using some of the acidic (chlorine) effluent to lower the pH of the caustic effluent. This will, however, lead to less color reduction, and an unknown effect on the COD. 相似文献
13.
This work is intended to show the characterization of three effluents (X, Y, and Z) derived from laboratory analyses conducted in the quality control department of a beneficiated bentonite products factory in order to present alternatives for their treatment and final disposal according to Brazil's National Solid Waste Policy (Política Nacional de Resíduos Sólidos – PNRS, Law 12,305/2010, Brazil). Analyses to identify the characteristics of the effluents revealed that the pH, salinity, electroconductivity, and total dissolved solids were in agreement with the organic and mineral nature of the effluent constituents: solvent, clay minerals, water, and activating agent. To assess reuse proposals, the effluents were subjected to the following tests: (a) swelling characteristic with effluent X, (b) petrochemical characterization of Y, and (c) swelling characteristic using commercial solvent and activated clay produced with effluent Z. Preliminary results indicate that each of these effluents can be reused variously in the laboratory, as a fuel, or in the original analysis/process. 相似文献
14.
垃圾焚烧是二噁英重要来源之一。本文对城市生活垃圾焚烧发电设施排烟和设施周边的二噁英浓度进行实测与分析,结果表明,合理控制垃圾焚烧锅炉运行工况,可以有效控制焚烧过程中二恶英生成,使其达到国家排放标准。 相似文献
15.
16.
17.
从理论计算和国内外已投运工程的实际运行监测两方面,对海水脱硫排水水质进行了分析,结果表明在采用成熟工艺的前提下,海水脱硫的排水水质包括重金属等指标,全部可以达到我国海水三类标准,绝大部分指标满足海水一类标准,而且通过对国内外已经投运项目的长期监测,也未发现对周围海域的生态环境造成不利影响。 相似文献
18.
19.
Hospital effluents are loaded with pathogenic microorganisms, partially metabolized pharmaceutical substances, radioactive elements, and other toxic substances. Such effluents if not treated properly can damage the natural environment and create a biological imbalance. This paper points out the areas of concern for hospital wastewater disposal and reports the findings of a limited physico-chemical study of treatment options for hospital effluents conducted at Christian Medical College and Hospital, Vellore, Tamil Nadu. The effluent collected was checked for conventional parameters and subjected to coagulation experiments. The raw and settled effluents were coagulated with FeCl(3), filtered and disinfected. Physico-chemical treatment seems to be an attractive option for the cost-effective disposal of hospital effluents. The results of this study call for further detailed study in this area. 相似文献