典型工业废水治理技术研究 文献综述.doc

范文最新推荐 PAGE1 / NUMPAGES1 典型工业废水治理技术研究+文献综述 摘要:由于人类社会的发展，水污染日益成为一个亟待解决的严重问题，几十年来人们不断对废水的处理进行各种研究。工业废水的处理虽然早在19世纪末已经开始,并且在随后的100多年里进行了大量的试验研究和生产实践,但是由于许多工业废水成分复杂,性质多变,至今仍有一些技术问题没有完全解决。本就不同的工业废水处理方法技术进行了实验研究与探讨。本课题采用了混凝实验与消解法测定COD两种实验，以此对废水的治理技术进行研究。通过实验发现，不同的混凝剂对工业废水的效果不同，而相同的混凝剂面对不同性质的废水时也有强有弱，在消解法测定COD的过程中，我们发现COD的消除在放入约1.2g并搅拌三小时左右时影响最为明显。11721 Abstract: Due to the development of human society, water pollution has become a serious problem that needs to be solved urgently. Treatment of industrial wastewater although has started as early as the end of the 19th century and in the next 100 years were a large number of investigation and production practice, but due to the complexity of the many industrial wastewater composition and dynamic nature. So far, there are still some technical problems have not been completely resolved. This article has carried on the experiment research and the discussion to the different industrial waste water treatment method technology. In this paper, the coagulation experiment and digestion method were used to measure COD two kinds of experiments, and the treatment technology of wastewater was studied. Through the experiment found that different coagulants in industrial wastewater effect is different, and the same coagulant in wastewater of different nature also has a strong weak, digestion method in determination of COD in the process, we found that the COD elimination effect when put about 1.2 and stir for about three hours is the most obvious 我国传统的社会经济发展模式以ldquo;高投入、高消耗、高污染rdquo;为特点，导致环境质量整体恶化，其中水环境恶化更为堪忧。中国的水体污染主要是由工业废水、农药、生活污水以及各种固、气体等废弃物排放所造成的．工业污染排故指数比国际先进水平常高出几倍到几十倍，城市生活污水排放量日益上升，其处理率不到20％。我国水污染的一般特点是北方比南方严重．地表水比地下水严重，城市及近郊比远处严重。众所周知，环境污染和破坏对社会经济发展所造成的直接和间接危害是十分惊人的，据1992～1996年的国家环境质量通报报道，目前全国江河水域普遍受到不同程度的污染，除部分内陆河流及大型水库外，污染呈加重趋势；大江大河的干流水质尚属良好，但流经城镇的河段污染严重，尤其是大中城市下游河段。我国湖泊普遍受到N、P等营养物的污染，富营养化问题已成为我国湖泊的主要环境和生态问题之一。 工业废水种类繁多，成分复杂，相对而言对环境的影响更大，处理难度也较高。我国经济尚处于快速增长期，因此在工业生产中会排出大量废水，特别是在制药、印染、化工等领域，其具有污染物种类多，成分复杂，COD浓度高，可生化性差，毒害性