【摘要】：對(duì)于大型的煉化企業(yè),綜合污水處理廠是保證廢水處理達(dá)標(biāo)排放的最后一道屏障。隨著經(jīng)濟(jì)的發(fā)展,國(guó)家對(duì)環(huán)保工作的重視程度逐年上升,必將逐步提高全社會(huì)的環(huán)保管理和考核標(biāo)準(zhǔn)。目前TP排放標(biāo)準(zhǔn)：對(duì)于大型的煉化企業(yè)綜合污水處理廠執(zhí)行的是《污水綜合排放標(biāo)準(zhǔn)》(GB8978-1996)的一級(jí)排放標(biāo)準(zhǔn),即TP排放濃度限值執(zhí)行O.5 mg·L-1。某公司污水處理廠目前采用初沉—水解-酸化—A/O處理工藝,日處理量120000 m3·d-1,2013年進(jìn)水TP平均值4.72 mg·L-1,年出水平均值1.76mg·L-1,為了適應(yīng)國(guó)家國(guó)家口趨嚴(yán)格的環(huán)保管理要求,本課題針對(duì)某公司污水排放現(xiàn)狀進(jìn)行調(diào)查研究,提出了磷穩(wěn)定達(dá)標(biāo)的排放方案。主要的研究?jī)?nèi)容：1、確定進(jìn)入污水廠的高濃度TP污染源,探索從源頭消減TP的方法。2、針對(duì)公司污水廠目前的TP排放水平,對(duì)污水廠末端出水開(kāi)展化學(xué)除磷研究,確定最佳除磷藥劑、最佳攪拌時(shí)間、最佳沉淀時(shí)間和確保TP達(dá)標(biāo)的藥劑投加量。3、從污水廠工藝效果出發(fā),探索提高生物除磷效率的方法。4、提出降低TP排放的科學(xué)達(dá)標(biāo)保障方案。研究過(guò)程中結(jié)合數(shù)學(xué)模擬技術(shù)即可規(guī)避在大生產(chǎn)中調(diào)整運(yùn)行參數(shù)帶來(lái)的風(fēng)險(xiǎn),又大大提高了研究過(guò)程的科學(xué)性。本課題的研究成果可降低污水處理系統(tǒng)的TP排放值,將為公司的后續(xù)發(fā)展提供有力的支持。研究成果可在公司推廣應(yīng)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.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X742

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