Question

急求论文摘要翻译！

本研究针对某公司在萃取印楝素的过程中所产生的废水进行治理工艺的研究，其目的是为了寻找出一种能有效处理该种高浓度、难降解有机废水的方法。以印楝为原料生产的农药是当前最为推崇的低毒、低残留、对人畜安全无毒、选择性强、无抗药性、无污染环境的天然杀虫剂，其有效成分是印楝素，但是，在印楝素的萃取过程中产生了高浓度、难降解、可生化性差的有机废水，该废水的水质情况是，pH值为4.9，呈弱酸性，颜色为深褐色，色度为1760倍，COD浓度为333877mg/l，BOD为97736.15mg/l，BOD/COD为0.31，可生化性差，氨氮为1516.15mg/l。
论文通过对常用难降解有机废水的化学、物理和生物处理方法的研究，总结探索出一套能有效处理该种废水的处理工艺，该工艺包括即消解、氧化、混凝、厌氧的过程。试验结果表明：消解、氧化、混凝预处理不但能去除废水中的部分有机物，还能通过破坏有机物结构提高废水的可生化性，减小后续处理的压力，使得厌氧处理有较好的效果。论文的总体结构是，首先简单介绍了以印楝素为农药的机理和特点，以及难降解有机废水常用的一些方法，然后通过小试试验对处理方法进行了探索研究，确定了初步的试验路线，并根据各试验过程的影响因素，对试验方案的条件进行了研究，找出了有效条件。
试验中各步骤影响因素的主要研究有以下几个方面：
消解过程中主要研究了pH值和温度的影响因素。即当温度固定，pH值在1—7范围内变化时，水样COD的去除率；当pH值固定，温度为80℃和90℃时，水样COD的去除率。
氧化过程中研究了pH值和过氧化氢投加量的影响因素。即当过氧化氢投加量固定，pH值在1—7范围内变化时，水样COD的去除率；当pH值固定，过氧化氢投加量为5ml、10ml、15ml、20ml、25ml时，水样COD的去除率。
混凝过程中研究了pH值和聚合氯化铝投加量的影响因素。即当过聚合氯化铝投加量固定，pH值在1—7范围内变化时，水样COD的去除率；当pH值固定，聚合氯化铝投加量为0.5g、1.0g、1.5g、2.0g时，水样COD的去除率。
厌氧生物处理过程中研究了水样与厌氧污泥体积比和温度的影响因素。即当温度固定，水样与厌氧污泥体积比为1：1、1：2、1：3时，水样COD的去除率；当水样与厌氧污泥体积比固定，温度为35℃和55℃时，水样COD的去除率。
经研究得出，当消解过程pH值为4，温度为80℃，氧化过程pH值为4，过氧化氢投加量为25ml，混凝过程pH值为8，聚合氯化铝的投加量为1.0g，厌氧生物处理温度为35℃，水样与厌氧污泥体积比为1：3时，试验处理最终出水的COD浓度为9516mg/l，去除率达到了97.15%，色度也得到了很大的改善。
关键词：印楝、难降解有机废水处理、消解、氧化、混凝、厌氧

Answer 1

This study for a company in the extraction of azadirachtin in the process of the wastewater generated by the process of governance, with the aim of finding an effective handling of the high concentration of species, degradation of organic waste water is difficult. Neem in the production of raw materials for pesticides is the most respected low toxicity, low-residue, non-toxic to humans and animals to safety, strong selective, non-drug-resistant, pollution-free environment, natural pesticides, the active ingredient is azadirachtin, However, in the process of extraction of azadirachtin had a high concentration of refractory, poor biodegradability of organic waste, the waste water is the water quality, pH value of 4.9, was weak, as a dark brown color, the color for 1760 times, COD concentration 333877mg / l, BOD for 97736.15mg / l, BOD / COD 0.31, poor biodegradability, as ammonia 1516.15mg / l.
The paper used refractory organic wastewater of chemical, physical and biological treatment of the study, summed out a framework for dealing with this type of waste water treatment process, including that of the digestion process, oxidation, coagulation, anaerobic process. The results showed that: digestion, oxidation, pre-coagulation not only to remove some of the organic matter in waste water, but also through the destruction of organic matter to improve structure of the biodegradability of waste water, reducing the follow-up to deal with the pressure of making a better deal with anaerobic . The overall structure of the paper, first of all a brief introduction to the mechanism of azadirachtin for pesticides and characteristics of refractory organic wastewater as well as some of the commonly used methods, and then through a small pilot test of the treatment carried out exploration studies to determine the initial pilot line , And in accordance with the trial process, the conditions of a pilot program conducted a study to find out the conditions for effective.
Test the impact of these factors, the main research in the following areas:
Digestion in the process of research and the pH value of the temperature factor. When the temperature is fixed that is, pH value in the range of 1-7 changes, the removal of COD in water samples; when the pH value of the fixed temperature of 80 ℃ and 90 ℃, the removal of COD in water samples.
Oxidation process research and the pH value of the hydrogen peroxide dosage factor. That is, when hydrogen peroxide fixed dosage, pH value in the range of 1-7 changes, the removal of COD in water samples; when the pH value of fixed hydrogen peroxide dosage for 5ml, 10ml, 15ml, 20ml, 25ml , The removal of COD in water samples.
Coagulation in the process of research and the pH value of the chloride dosage factor. That is, when the PAC had fixed dosage, pH value in the range of 1-7 changes, the removal of COD in water samples; when the pH value of the fixed dosage for chloride 0.5g, 1.0g, 1.5g, 2.0g, the removal of COD in water samples.
Anaerobic biological treatment process studied water samples and anaerobic sludge volume ratio and the temperature factor. When the temperature that is fixed, water and anaerobic sludge volume ratio 1:1,1:2,1:3, the removal of COD in water samples; when water samples and anaerobic sludge volume ratio fixed at a temperature of 35 ℃ and 55 ℃, the removal of COD in water samples.
After emerging from the study, when the process of digestion pH value of 4 at a temperature of 80 ℃, the process of oxidation pH value of 4, hydrogen peroxide dosage for 25ml, the process of coagulation pH value of 8, the PAC dosage To 1.0g, anaerobic biological treatment temperature of 35 ℃, water and anaerobic sludge volume ratio of 1:3, the final test to address the water COD concentration of 9516mg / l, the removal rate reached 97.15 percent and color Have been greatly improved.
Key words: Neem, refractory organic wastewater treatment, digestion, oxidation, coagulation, anaerobic