【摘要】：隨著勘探開發(fā)規(guī)模的不斷擴大,鎮(zhèn)涇油田在生產(chǎn)實際過程中產(chǎn)生的污水量日益增加,污水處理站的日處理量也在不斷增加。因此,需要研究出一套適合鎮(zhèn)涇油田不同類型污水混配的加藥處理技術方案。本文通過對鎮(zhèn)涇油田三種不同類型的污水,即采出水、鉆井水和壓裂液的水質分析,并進行室內(nèi)實驗研究,分別確定出它們的加藥處理方案和加藥成本。由于鎮(zhèn)涇油田不同層位采出水的水質、結垢離子含量及成分都不相同,所以防垢劑的加量也不同。實驗室選用磷酸基丁烷三羧酸(PBTCA)作為防垢劑,當采出水為延9、長8層時,投加量為20mg/L,當采出水為長6、長9層時,投加量為40mg/L。對于鉆井污水,本文采用絮凝的方法對其進行處理。在室內(nèi)實驗的基礎上,篩選出合適的絮凝劑聚合氯化鋁(PAC),加量為30mg/L,水質調節(jié)劑Na OH,加量為280~400mg/L以及陽離子聚丙烯酰胺(PAM)與聚合鋁進行復配,PAM加量為1.0mg/L,并確定出最佳實驗溫度、反應時間以及加藥的時間間隔�；趬毫岩褐蠧ODcr難處理、難降解的特點,本文采用絮凝-隔油法處理之后再用次氯酸鈉結合紫外光對廢水進行深度處理。絮凝實驗所用藥劑為聚合氯化鋁(PAC),加量為175mg/L,氧化實驗選次氯酸鈉作為氧化劑,加量為40mg/L,同時要用紫外光照射30min左右。鎮(zhèn)涇油田污水處理站大多來水為不同混配比的混合水,本文通過將任意兩種不同類型污水的比例為2:8、4:6、5:5、6:4、8:2時和任意三種不同類型污水的比例為2:2:6、4:4:2、1:2:7、2:3:5、3:3:4時分別進行了計算研究,確定出它們的加藥方案。并根據(jù)算例進行總結,研究出適合鎮(zhèn)涇油田污水在任意不同混配比下的加藥規(guī)律,以備現(xiàn)場應用。
[Abstract]:With the expansion of exploration and development scale, the sewage produced in Zhenjing oilfield is increasing day by day, and the daily treatment capacity of sewage treatment station is also increasing. Therefore, it is necessary to develop a set of dosing technology scheme which is suitable for different types of sewage mixture in Zhenjing Oilfield. By analyzing the water quality of three different types of sewage in Zhenjing Oilfield, I. E., produced water, drilling water and fracturing fluid, and through laboratory experimental study, their dosing treatment schemes and dosing costs are determined respectively. Because the water quality, scaling ion content and composition of produced water from different layers in Zhenjing oilfield are different, the addition of scale inhibitor is also different. Phosphate butane tricarboxylic acid (PBTCA) was used as scale inhibitor in the laboratory. When the extracted water was 9 and 8 layers, the dosage was 20 mg / L, when the extracted water was 6 and 9 layers longer, the dosage was 40 mg / L. For drilling sewage, this paper uses flocculation method to treat it. On the basis of laboratory experiment, the suitable flocculant polyaluminum chloride (PAC), dosage is 30mg / L, water quality regulator Na OH, dosage is 280~400mg/L and cationic polyacrylamide (PAM) is mixed with polyaluminum polymer aluminum. The dosage of PAM was 1.0 mg / L, and the optimum experimental temperature, reaction time and time interval were determined. Based on the characteristics of difficult treatment and degradation of CODcr in fracturing fluid, this paper uses flocculation-oil separation method to treat the wastewater in depth with sodium hypochlorite combined with ultraviolet light. In the flocculation experiment, the dosage of polyaluminum chloride (PAC), was 175 mg / L, sodium hypochlorite was selected as oxidant in oxidation experiment, the dosage was 40 mg / L, and the 30min was irradiated by ultraviolet light at the same time. Most of the wastewater treatment stations in Zhenjing Oilfield are mixed water with different mixing ratios. In this paper, the ratio of any two different types of sewage is 2-8, 4-6, 5-5, 6-4, 8: 2 and that of any three different types of sewage is 2-2-6, 4-4-2, 1-2-7, 2-3-5, 3-3-4, and the ratio is 2-2-6, 4-4-2, 1-2-7, 2-3-5, 3-3-4-hour, respectively. A computational study was carried out, Determine their dosing plan. On the basis of an example, the dosing law suitable for Zhenjing oilfield sewage with arbitrary mixing ratio is studied for field application.
【學位授予單位】：西安石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X741

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