生化—芬顿法处理废纸制浆造纸废水工艺设计

发布时间：2018-03-31 18:27

本文选题：废纸制浆造纸废水　切入点：厌氧生化　出处：《齐鲁工业大学》2015年硕士论文

【摘要】：制浆造纸废水在大多数人看来是传统意义上的污染源大户,目前为止不管是在废水排放总量、污染物总量等各方面都是位居前列的,其处理难度更是仅次于各种化工废水,因此制浆造纸废水处理已经成为水污染控制的重中之重,随着环保形式越来越严峻,废水处理也成为制浆造纸企业的生命之源。近年来国内制浆造纸行业发展迅速,随着人们对绿色生态环境的重视,制浆造纸行业对废纸再生纤维的利用越来越重视,废纸再生纤维的利用率越来越高,再生纤维的质量越来越差。为了保证生产的纸制品质量,在造纸过程中化学品被广泛的应用,这样在废纸再回收使用打浆时产生的废水中含有大量化学品,使得废水处理难度不断增加。随着国内水资源匮乏的加剧及国内最新环境法规的实施,企业对废水排放的要求越来越严格,许多企业采用零排放或少部分排放的方式。为满足新的生产要求,研发新的废水处理技术及废水回用技术刻不容缓。另一方面很多水处理技术在不同的废水中已经成功应用,如何根据废水水质的特点选择合适的工艺亦显得尤为重要。早期处理工艺一般采用物化+好氧生化的简单二级处理工艺,已经无法实现达标排放,现在多采用物化+厌氧生化+好氧生化+芬顿处理的新工艺,并且实现废水的多级回用及污泥再利用。以实际工程为依托对废纸制浆造纸废水进行分析研究,通过对多种污水处理工艺的比较分析,选用了混凝沉淀法+UASB+一体化氧化沟+芬顿处理的工艺流程,对各个构筑物进行设计计算。实际运行结果表明,此工艺流程是可行的,出水完全控制在排放要求之下,其运行成本控制在合理范围之内。
[Abstract]:Pulping and papermaking wastewater is considered by most people to be a major source of pollution in the traditional sense. Up to now, the total amount of wastewater discharged and the total amount of pollutants are among the top in all aspects, and the difficulty of treatment is second only to that of various kinds of chemical wastewater.Therefore, the treatment of pulping and papermaking wastewater has become the most important part of water pollution control. With the environmental protection form becoming more and more serious, wastewater treatment has become the life source of pulping and papermaking enterprises.In recent years, the domestic pulp and paper industry has developed rapidly. With the attention of people to the green ecological environment, the pulp and paper industry pay more and more attention to the utilization of recycled paper fiber, and the utilization rate of recycled paper fiber is becoming higher and higher.The quality of regenerated fibers is getting worse and worse.In order to ensure the quality of paper products produced, chemicals are widely used in papermaking process, so there are a large number of chemicals in the waste water produced when the waste paper is recycled and used in pulping, which makes the treatment of waste water more and more difficult.With the increasing shortage of domestic water resources and the implementation of the latest environmental laws and regulations, the requirements of wastewater discharge are becoming more and more strict. Many enterprises adopt the method of zero discharge or a small part discharge.In order to meet the new production requirements, it is urgent to develop new wastewater treatment technology and wastewater reuse technology.On the other hand, many water treatment technologies have been successfully used in different wastewater, so it is very important to choose suitable technology according to the characteristics of wastewater quality.The early treatment process generally adopts the simple secondary treatment process of physical, chemical, aerobic and biochemical, which can no longer achieve the discharge standard. Now, the new process of physicochemical anaerobic, biochemical, aerobic and biochemical Fenton treatment is mostly used.And realize the multi-stage reuse of wastewater and sludge reuse.Based on the actual project, the waste paper pulp and papermaking wastewater was analyzed and studied. Through the comparison and analysis of various wastewater treatment processes, the UASB integrated oxidation ditch Fenton treatment process was selected.The design and calculation of each structure are carried out.The actual operation results show that the process is feasible, the effluent is completely controlled under the discharge requirements, and the operating cost is controlled within a reasonable range.
【学位授予单位】：齐鲁工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X793

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