某公司磷污染源调查和废水除磷实验研究

发布时间：2018-11-25 12:47

【摘要】：对于大型的炼化企业,综合污水处理厂是保证废水处理达标排放的最后一道屏障。随着经济的发展,国家对环保工作的重视程度逐年上升,必将逐步提高全社会的环保管理和考核标准。目前TP排放标准：对于大型的炼化企业综合污水处理厂执行的是《污水综合排放标准》(GB8978-1996)的一级排放标准,即TP排放浓度限值执行O.5 mg·L-1。某公司污水处理厂目前采用初沉—水解-酸化—A/O处理工艺,日处理量120000 m3·d-1,2013年进水TP平均值4.72 mg·L-1,年出水平均值1.76mg·L-1,为了适应国家国家口趋严格的环保管理要求,本课题针对某公司污水排放现状进行调查研究,提出了磷稳定达标的排放方案。主要的研究内容：1、确定进入污水厂的高浓度TP污染源,探索从源头消减TP的方法。2、针对公司污水厂目前的TP排放水平,对污水厂末端出水开展化学除磷研究,确定最佳除磷药剂、最佳搅拌时间、最佳沉淀时间和确保TP达标的药剂投加量。3、从污水厂工艺效果出发,探索提高生物除磷效率的方法。4、提出降低TP排放的科学达标保障方案。研究过程中结合数学模拟技术即可规避在大生产中调整运行参数带来的风险,又大大提高了研究过程的科学性。本课题的研究成果可降低污水处理系统的TP排放值,将为公司的后续发展提供有力的支持。研究成果可在公司推广应用。
[Abstract]:For large refinery and chemical enterprises, comprehensive wastewater treatment plant is the last barrier to ensure the discharge of wastewater up to standard. With the development of economy, the state pays more attention to the environmental protection work year by year, and will gradually improve the environmental protection management and assessment standard of the whole society. At present, TP discharge standard: the first class discharge standard of Integrated sewage disposal Standard (GB8978-1996) for large refinery and chemical enterprises is O.5 mg L-1, that is, the limit value of TP discharge concentration. At present, a wastewater treatment plant of a certain company adopts the process of initial sedimentation, hydrolysis, acidification-A / O treatment. The daily treatment capacity is 120000 m ~ 3 路d ~ (-1), the average TP of influent in 2013 is 4.72 mg / L ~ (-1), and the average annual effluent is 1.76mg ~ (-1). In order to meet the strict requirements of environmental protection management, this paper investigates and studies the present situation of sewage discharge of a company, and puts forward a stable discharge scheme of phosphorus standard. The main research contents are as follows: 1. To determine the high concentration of TP pollution sources entering the wastewater treatment plant, and to explore the method of reducing TP from the source. 2. According to the current TP discharge level of the wastewater treatment plant, a chemical phosphorus removal study was carried out on the effluent from the end of the wastewater treatment plant. To determine the optimum phosphorus removal agent, the best stirring time, the best precipitation time and the dosage of the medicament to ensure the standard of TP. 3. Based on the technological effect of the wastewater treatment plant, the method of improving the efficiency of biological phosphorus removal was explored. This paper puts forward the scheme of scientific standard guarantee for reducing TP emission. In the research process, the risk of adjusting operation parameters in large production can be avoided by combining mathematical simulation technology, and the scientific nature of the research process has been greatly improved. The research results of this paper can reduce the TP discharge value of sewage treatment system and will provide strong support for the future development of the company. The research results can be popularized and applied in the company.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X742

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