膜生物反应器处理废水技术研究进展

介绍了膜生物反应器(MBR)及其废水处理特点.阐述了影响膜生物反应器工艺运行的主要因素,包括有机负荷、膜固有性质及膜污染.综述了膜生物反应器在废水处理中的应用现状,包括污水回用、工业废水处理、土地填埋场堆肥沥滤液处理.分析了膜生物反应器应用前景及研究方向.     

MBR组合工艺在炼油污水处理中的应用

膜生物反应器(MBR)是膜技术和污水生物处理技术相结合的新工艺,该工艺在炼油污水处理装置现场应用并连续运行五年多时间,为金陵石化公司污水处理达标排放与回用发挥了重要作用。经过对该装置运行不断摸索和消化,针对应用中暴露出的一些问题,采取了相应措施加以完善,确保了装置正常、高效运转。     

膜生物反应器技术在综合污水处理中的应用

膜生物反应器技术(MBR 技术)是近年新开发的污水处理与回用技术,具有诸多传统污水处理工艺技术无法比拟的优点,在污水处理和回用中具有广阔的应用前景.通过膜生物反应器技术在综合污水处理中的应用表明,采用MBR技术处理石化污水,能有效地降低污水中污染物质的含量,出水水质好,自动化程度高,抗冲击能力强,扩容便利等特点,比较适合处理石化园区的污水.具有广阔的应用前景.     

高含盐石化废水生化处理的研究进展

本文简述了石化有机废水生化处理过程中高浓度含盐量对微生物的抑制作用以及嗜盐菌的特性，分析了国内外含盐石化废水生化处理的主要工艺如活性污泥法(ASP)、生物膜法(BF)、序批式生物反应器(SBR)、生物接触氧化法以及膜生物反应器(MBR)等工艺的研究进展，表明好氧膜生物反应器(MBR)工艺可为解决高含盐石化废水的治理提供一条经济有效的新途径。     

国产PVDF中空纤维膜在炼油废水深度处理回用中的应用

中国石化海南炼油化工有限公司采用膜生物反应器（MBR）工艺处理炼油废水,以达到深度处理后回用的目的。采用国产PVDF中空纤维膜可保证MBR系统的处理效果,MBR出水的COD质量浓度平均值为41 mg/L、石油类物质质量浓度低于1 mg/L、 NH3-N质量浓度低于0.81 mg/L,可满足补充循环冷却水的标准。以国产PVDF中空纤维膜更换进口膜,保持膜产水量低于设计通量,能降低膜的污染速率,保持稳定的膜通量。通过保持适宜的污泥浓度,定期排泥,并采用空气擦洗、在线反冲洗、高浓度和低浓度交替的化学在线清洗及定期的离线清洗,国产PVDF中空纤维膜可保持来良好的过滤性能。     

双膜组合工艺在石化废水处理中的应用

利用污水回用技术处理石化行业的废水,一直以来备受关注,＂超滤-反渗透＂的双膜组合工艺生产优质再生水,更是石化废水处理所追求的高级目标。通过对炼油污水回用装置工艺流程选择和对双膜组合工艺特点以及生产运行现状的介绍,总结锦州石化公司应用该工艺四年来的运行经验,表明双膜组合工艺处理炼油污水是可行的,为污水处理提供了一条新的方法,是实现节水减排目标的首选方案,具有显著的经济和社会效益。     

双膜组合工艺在石化废水处理中的应用

利用污水回用技术处理石化行业的废水,一直以来备受关注,＂超滤-反渗透＂的双膜组合工艺生产优质再生水,更是石化废水处理所追求的高级目标。通过对炼油污水回用装置工艺流程选择和对双膜组合工艺特点以及生产运行现状的介绍,总结锦州石化公司应用该工艺四年来的运行经验,表明双膜组合工艺处理炼油污水是可行的,为污水处理提供了一条新的方法,是实现节水减排目标的首选方案,具有显著的经济和社会效益。     

MBR组合工艺在炼油污水处理中的应用

膜生物反应器（MBR）是膜技术和污水生物处理技术相结合的新工艺,该工艺在炼油污水处理装置现场应用并连续运行五年多时间,为金陵石化公司污水处理达标排放与回用发挥了重要作用。经过对该装置运行不断摸索和消化,针对应用中暴露出的一些问题,采取了相应措施加以完善,确保了装置正常、高效运转。     

天然气行业污水零排放新型工艺

为减轻天然气行业污水最终处置造成的环境压力,设计实施了一套针对天然气行业的污水零排放新型工艺,通过污水分质处理原则,达到分质回用要求。该工艺由生化处理和提浓处理对全厂各种废水进行回用处理,处理后回用水COD_(cr)、BOD_5和电导率明显下降,平均值分别达到50 mg/L、14 mg/L和388μs/cm,达到回用水水质标准。由生化处理和提浓处理产生的残液最终进入蒸发结晶装置,做最后处置,将水与固体彻底分离,生成的产品水电导率平均值只有35.25μs/cm,达到循环水补水要求。采用该污水零排放新型工艺最终实现了无污水外排。     

炼油废水深度生物处理技术研究进展

随着原油劣质化和环保标准的日益严格,原有的炼油废水处理技术面临着很多亟待解决的问题,特别是二级生化系统出水仍含有难降解物质、氮、磷、有毒有害污染物等,为总氮、总磷等的提标排放增加了处理难度.对生化法深度处理炼油废水技术进行了综述,介绍了曝气生物滤池、生物活性炭、膜生物反应器、移动床生物膜反应器、旋流自转强化废水生物脱氮...     

Integrated Submerged Membrane Bioreactor Anaerobic/Aerobic (ISMBR-A/O) for Nitrogen and Phosphorus Removal During Oil Refinery Wastewater Treatment

Abstract

Nitrogen and phosphorus removal from oil refinery wastewater using an integrated submerged membrane bioreactor anaerobic/aerobic (ISMBR-A/O) was investigated in this laboratory study. The objectives were to demonstrate suitability of the membrane bioreactor (MBR) technology to the treatment of refinery wastewater and its ability to achieve nitrogen and phosphorus removal effectively. IMBR-A/O comprised four reactor tanks: an influent tank, anaerobic tank, aerobic tank, and effluent tank. The IMBR-A/O was operated in cycles of four phases: fill, anaerobic, aerobic, and draw. During the fill phase, the influent tank was half-filled with oil refinery wastewater. During the subsequent anaerobic phase, most of the phosphorus release took place from the submerged biofilm in this reactor. In the aerobic phase, the wastewater was circulated by pumps between the influent tank and the anaerobic tank, resulting in denitrification at the start of the aerobic phase due to low oxygen concentrations, followed by nitrification and luxury uptake of phosphorus when oxygen concentrations increased. Ultimately, the treated water flowed from the effluent tank. The results show that the chemical oxygen demand (COD), 5-day biochemical oxygen demand (BOD₅), oil, NH⁺ ₄-N, total nitrogen (TN), and total phosphorus (TP) removal efficiencies were 91, 90, 91, 99, 80, and 66%, respectively.     

The Bioremediation of Refinery Wastewater Using Inorganic Fertilizer

Abstract

This study investigated the treatment of refinery wastewater using inorganic fertilizer. The biological method of treatment using the process of bioremediation was used. Inorganic fertilizer (NPK 15:15:15) was used to biostimulate the microorganisms present in the wastewater. Five samples of the refinery wastewater with equal pollution load were treated with different amounts of fertilizer (5, 10, 20, 30, and 40 g/l). Biochemical oxygen demand (BOD), pH, dissolved oxygen (DO) and total hydrocarbon content (THC) of the wastewater were monitored for a period of 35 days. From the results obtained, the BOD was observed to have dropped from 68.71 to 30.23 m/l; 68.71 to 23.92 mg/l; 68.71 to 22.11 mg/l and then 68.71 to 21.86 mg/l for the 5, 10, 20, 30, and 40 g/l of the refinery samples, respectively. Similar decreases were also observed for the other physiochemical parameters, except for the pH and DO, which increased with time. It was observed that the 40 g/l sample was more effective in the 35 days of the study and these results met the Federal Environmental Protection Agency (FEPA) standard for BOD, which is within the range of 30–35 mg/l. Hence, the method of bioremediation using fertilizer in the treatment of refinery wastewater can be applied on a large scale treatment.     

Study of an A/O Submerged Membrane Bioreactor for Oil Refinery Wastewater Treatment

Abstract

A 55-day experimental study was conducted to investigate the treatment process of oil refinery wastewater using submerged membrane bioreactor (MBR) technology. The results showed that the removal rates for chemical oxygen demand (COD) and 5-day biochemical oxygen demand (BOD₅) were stable and averaged 92%. The average removal rates for NH₃-N, oil, and turbidity were shown to be 93.7%, 75.3%, and 94.6%, respectively. The removal rates for total phosphorus (TP), total suspended solids (TSS), suspended solids (SS), and phenol were shown to be greater than 98.5%, 97.9%, 93.8%, and 99.9%, respectively. This demonstrated that MBR technology had superior treatment effect on the above contaminants. During the 55-day operation, there was no trace of contamination on the membrane. This illustrated that the polyvinylidene fluoride (PVDF) flat sheet membrane manufactured by Toray Industries (Tokyo, Japan) had the ability to resist contamination.

     

曝气生物滤池在炼油污水中的应用

曝气生物滤池在炼油污水场中得到应用,能有效的降解污水中的污染物。通过对曝气生物滤池的工艺原理、工艺特点进行综合介绍,对曝气生物滤池的工艺运行进行了探讨。     

炼油厂“三泥”离心机脱水的工业试验

介绍了炼油厂“三泥”离心机脱水工业试验的工艺流程及试验结果，分析了影响离心机脱水效果的主要因素。该试验筛选出了效果良好的药剂配方，实现了离心机国产化，为离心机脱水技术在炼油厂“三泥”脱水中的推广应用提供了经验。     

难生物降解炼油污水的“催化氧化+曝气生物滤池”处理技术研究

为解决炼油企业高浓度污水经"隔油+气浮+生化"的传统工艺处理时外排水难以稳定达标的问题,针对该类污水难生物降解的特点,采用"催化氧化+曝气生物滤池"组合处理工艺进行了中试研究。结果表明,利用·OH强氧化反应处理的污水经曝气生物滤池生化处理后,出水中COD、氨氮浓度、油浓度、悬浮物浓度的平均值分别为51.2,5.3,2.3,27 mg/L,COD降低率为83.1%,氨氮、油和悬浮物的平均去除率分别为80.1%,73.4%,61.6%,主要水质指标均达到国家一级排放标准。该技术不需改建炼油厂现有污水处理系统,可实现工业化应用。     

MBR technology: A practical approach for petrochemical wastewater treatment

In this research membrane bioreactor (MBR) technology as a novel and practical technology was studied for treatment of saline petrochemical wastewater. Membrane fouling and permeability, mixed liquor properties such as change of flock size, and effluent characteristics of MBR were measured in presence of various salt concentrations in the feed. The results showed that the increasing the salinity reduced cake layer, total membrane resistances and increased the membrane permeability and sludge particle size. Also, COD removal efficiencies were up to 91% in all trials. These results indicate that the MBR was highly efficient for treating saline petrochemical wastewater.     

锦西石化污水处理场A/O系统的应用

锦西石化污水处理场二期工程采用A/O处理工艺,论述了厌氧-好氧（A/O）工艺的流程、基本原理、工艺控制指标以及该工艺在锦西石化污水处理场的应用经验,结果表明：该工艺在一定的操作条件下,耐冲击性较强,运行平稳,对炼油废水中COD、氨氮去除效果明显。