在酸性介质中(pH 5.0),Fe3+能与硫氰酸盐生成稳定的配离子[Fe(SCN)6]3-,该配阴离子能与碱性717型阴离子交换树脂定量交换缔合,形成阴离子交换树脂(R+)--金属离子(Mn+)--硫氰酸盐(SCN-)三元配合缔合体系,其最大吸收波长分别为490 μm,与二元水相最大吸收波长相同,通过制作薄层测定了水中Fe3+含量.本法具有较高的灵敏度ε630Fe3+=2.4×105 L·mol-1·cm-1,测定0.6 μgFe3+6次,RSD=2.7%,实测了水样中,Fe3+含量并与AAS法测定结果比较,Fe3+测定的线性范围0～10 μg/25mL,体系检出限为0.12 μmol/L.
评述了国内外在炼油化工废水处理的活性污泥技术改进、微生物处理与物化处理组合技术、难降解废水无害化处理技术以及污水回用技术方面的新进展。
介绍了HBCOD-1型COD在线自动监测仪的测定原理、分析流程和性能特点.仪器采用重铬酸钾氧化水中有机物和还原性无机物,通过分光光度法测定水中化学耗氧量(COD值).与国标方法进行线性回归校正后,仪器测定值与国标方法测得的CODCr值具有较好的一致性.
针对西北地区一综合炼油厂含硫污水管线的严重腐蚀问题,分析了腐蚀原因,确立了材料筛选方案,通过实验室静态挂片试验绘制了重量损失率变化曲线和现场挂片等试验手段,筛选推荐出了树脂玻璃钢耐蚀材料.工业生产应用结果表明,MFE-2型树脂玻璃钢是适用于该厂含硫污水系统的耐蚀材料,为类似装置的长周期运行提供了借鉴和经验.
对石化企业外排污水水质自动监控系统进行了详细介绍.着重介绍系统的主体--在线监测仪器的性能、运行与维护、监测数据质控等情况,并分析系统运行四年多以来发现的问题及采取的应对措施.系统投运以来,运行稳定,达到了对外排污水实时监控的目的.
油品储运中的环境保护是设计工作中应重视的问题,本文从油气储运过程中的污染源、所产生的危害以及设计中应采取的环保对策等三个方面进行阐述.
The feasibility of treating PET production technology waste gas with catalyst combustion method was explored.The medium trial run was carried out on the production plant.The plant safety running,the catalyst life time and the running economy was discussed.The results showed that compared with the current spray treatment method,the method was simple,without second pollution,with low cost and was completely practicble.
The operating conditions of degrading phenol were studied. The experiment result indicated that the time, initiative pH value , Fe~2+ and H_2O_2 concentration had obvious effect of these reaction. Under normal temperature, the phenol and COD removal are 98% and over 65% respectively at [H_2O_2]=20mmol/L,[ Fe~2+]=4mmol/L, pH=1,t=30min.
IGCC technology was spread in 1980s that is technology to realize clean production. Since poor products such as bitumen, residue and high-sulfur coke from refinery can be treated for purpose to rea-lize clean production, IGCC plant that takes petro-leum coke as gasified feedstock has broad future.
With application of SJ - 1 hydrolytic accelerating agent in the sour water stripping unit in Jinzhou Petrochemical Branch, ammonia nitrogen content in the purified water of stripping unit has been reduced, which either economizes on operating cost or gains a good economy benefit.
This article introduces the revamp of #2 floatation cell in the first stage in water purifying plant of refinery, and makes a comparison to industrial application with #1 floatation cell that is not revamped. The result shows that it is significantly improved on the effect of air floating treatment. De -oiling rate, on average, reaches 85% with stable de - oiling effect and 20. 4% of acceptable rate of effluent water has been increased compared to # 1 floatation cell.
This article analyzes the present situation of fresh water consuming and wastewater discharging in petrochemical enterprise, the necessity and emergency of accelerating reuse of the process of wastewater and enhancing the level of comprehensive utilization of water resources. Also introduces water saving theories of petrochemical enterprise at home and abroad, and bring forward some specific measures concerning water saving and wastewater minimization in petrochemical enterprises based on the a-nalysis of difficulties to fulfill water saving and wastewater minimization in petrochemical enterprise.
The oily sludge produced in the process of oil exploitation,refining and storage and its reuse are mainly represented in this article.After the sludge treated with chemical agent together with utilization of special separating settling tank,horizontal centrifugal and butterfly centrifugal,the separation hardness can be reduced so that the process adaptability can be improved with the result that the ideal separation of oil,water and sludge will be obtained.
This article introduces the combined process of catalytic combustion treating organic waste gas in waste water treatment plant with capacity of 3000 Nm3/h in Tianjin Petrochemical Complex and summarizes the operation of the plant.
Mainly introduces the current situation of noise environment in the unit area of Changzhou Refinery and analyzes and assesses the noises of major machine train, pumps, blowers, pipe and equipment, high - pressure exhausting and bring forward the corresponding solutions.
To analyze from the aspects of maintenance of automatic online water quality monitor, water quality control indoor and outdoor, comprehensive analysis and control supervision, bring forward the control method for ensuring the accuracy of automatic monitoring system.
Oxidation ditch treatment technology is adopted in waste water treatment plant of Jinmen Petrochemical Branch.Based on sludge bulking in the process of treating waste water from refinery and operating data,the cause of activated sludge bulking is analyzed and discussed and proposals are put forward in this article.
Water specification meet or even beyond the design requirement after the technology used in waste water treatment plant of Nanchong Refinery and Chemical General Works was reformed in 2004 and successful start-up in August 2005.This article gives all aspect introduction of technological reformation,new technology and process adopted in the plant and analyzes operation effect after its reformation.
Oil pills wreck sea environment.This article analyzes the treatment method of oil spills according to the kinetics of oil spills spread to select suitable method and analyze the property of different types of oil dispersant and brings forward the recommendation of application.
