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A comprehensive evaluation of re-circulated bio-filter as a pretreatment process for petroleum refinery wastewater

Journal of Environmental Sciences 2016年第12期28卷 49-55页

作者： Xiaoli Dai Chunmao then guangxu yan Yu Chen Shaohui Guo State Key Laboratory of Heavy 0il Processing Beijing Key Laboratory of Oil and Gas Pollution Control China University of Petroleum Beijing 102249China

Conventional biological treatment process is not very efficient for the treatment of petroleum refinery wastewater （PRW） that contains high-concentration of organic contaminants. Prior to biological treatment, an additional pretreatment process for PRW is required for the effluent to meet the discharge standards. While re-circulated bio-filter （RBF） has been applied as a pretreatment process in several PRW treatment plants, its effects have not been comprehen- sively evaluated. In this study, the parameters of operation, the changes in pollution indexes and contaminant composition in an engineered RBF have been investigated. We found that mainly highly active de-carbonization bacteria were present in the RBF, while no nitrification bacteria were found in the RBF. This indicated the absence of nitrification in this process. The biodegradable organic contaminants were susceptible to degradation by RBF, which decreased the Biological Oxygen Demand （BODs） by 83.64% and the Chemical Oxygen Demand （CODcr） by 54.63%. Consequently, the alkalinity and pH value of RBF effluent significantly increased, which was unfavorable for the control of operating parameters in subsequent biological treatment. Along with the decrease of CODcr, the RBF effluent exhibited a reduction in biodegradability. 834 kinds of recalcitrant polar organic contaminants remained in the effluent; most of the contaminant molecules having complex structures of aromatic, polycyclic and heterocyclic rings. The results of this study showed that RBF could efficiently treat PRW for biodegradable organic contaminants removal; however, it is difficult to treat bio-refractory organic contaminants, which was unfavorable for the subsequent biological treatment process operation. An improved process might provide overall guarantees for the PRW treatment.

关键词： Petroleum refinery wastewater Re-circulated bio-filter Pretreatment Comprehensive evaluation

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Causes Leading to Formation of Shot Cokes and Measures for Its Prevention in Super Viscous Oil Delayed Coking Unit

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China Petroleum Processing & Petrochemical Technology 2007年第1期9卷 19-24页

作者： Chen Chunmao Zhang Feng yan guangxu Guo Shaohui State Key Laboratory for Heavy Oil Processing China University of Petroleum Beijing 102249 Liaohe Petrochemical Corporation of PetroChina Panjin 124002

Shot cokes are frequently formed in the delayed coking unit treating the super viscous oil at PetroChina＇s Liaohe Petrochemical Company. Considerable work has been carded out to avoid the formation of shot cokes. The test results obtained have shown that the property of super viscous oil has played a key role in the formation of shot cokes. After adjusting and optimizing the process indices the operating regime of the delayed coking unit at a throughput of 118t/h of the super viscous oil is specified as follows： a reaction temperature of 498-502℃, a reaction pressure of 0.17-0.25 MPa, a recycle ratio of 0.5-0.6 and a fractionation tower bottom temperature of 355-365 ℃. In the meantime, the delayed coking process has adopted measures to enhance pre-fractionation of the feedstock to rationally remove light fractions and maintain a steady gas velocity in order to avoid the formation of shot cokes.

关键词： delayed coking unit super viscous oil shot cokes preventive methods

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Pretreatment of super viscous oil wastewater and its application in refinery

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Petroleum Science 2008年第3期5卷 269-274页

作者： Chen Chunmao yan guangxu Guo Shaohui yang Yong State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 China School of Environmental Engineering Liaoning University of Petroleum ＆ Chemical Technology Fushun 113001Liaoning China

Wastewater from super viscous oil processing cannot be effectively treated by conventional wastewater treatment plants in refineries because of its high concentration of various organic pollutants. In order to resolve this problem, a number of investigations were conducted in our work to understand the physicochemical properties, sedimentation, demulsification and pretreatment of such super viscous oil refinery wastewater. The results showed that the key issues for pretreatment of this wastewater were：（1） Optimized process parameters were used in the sedimentation and demulsification processes for oil removal to effectively recover oil and remove scum from wastewater; （2） A suitable flocculation process was selected to minimize oil, suspended solids （SS） and chemical oxygen demand （CODcr）. A pretreatment process including three continuous steps： oil removal by sedimentation, oil removal by demulsification, and flotation separation, was proposed and applied in Liaohe Petrochemical Company, PetroChina and the oil content in effluents was less than 200 mg/L and CODcr less than 2,500 mg/L, which completely met the requirement for influent of the conventional wastewater treatment plant, and the recovered super viscous oil reached 5,873 tons in the initial year in Liaohe Petrochemical Company, PetroChina.

关键词： Super viscous oil refinery wastewater pretreatment process sedimentation demulsification flocculation

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Silurian integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 1005-1035页

作者： Zhongyang CHEN Qing CHEN guangxu WANG Xiang FANG Peng TANG Guanzhou yan Wenwei YUAN Bing HUANG Xiaole ZHANG Kui yan Yuandong ZHANG Yi WANG State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China

The Silurian palaeontology and stratigraphy of the Qinghai-Tibetan Plateau have been studied for more than100 *** the launch of the Second Tibetan Plateau Scientific Expedition and Research,it is necessary to update the summaries of the Silurian stratigraphy and fossil assemblages of the Qinghai-Tibetan Plateau and their correlation with its surrounding *** this study,we have selected 33 sections from the Qinghai-Tibetan Plateau and its surroundings areas,summarised the available data in terms of stratigraphic regionalisation,lithostratigraphy,chronostratigraphy,and biostratigraphy,and divided the study area into four stratigraphic provinces:the Xizang-Western Yunnan-Western Sichuan Province,the KunlunQilian Province,the South China Province,and the Tarim *** general,the Silurian strata in the Qinghai-Tibetan Plateau is more complete than those in other areas of *** studies of the vertebrate faunas,sporomorph assemblages,and brachiopod faunas of the study area indicate a closer geographical relationship between the South China,Tarim,and Indochina palaeoplates,than previously *** with the surrounding areas where Silurian strata have been extensively studied,the study of Silurian strata in the main part of the Qinghai-Tibetan Plateau is still in the preliminary *** the future,it is necessary to conduct research on the age,distribution,and resource potential of basal Silurian black shales to provide new directions for shale gas exploration and development in *** shallow marine strata of the middle to upper Silurian require further *** that the Silurian System in the Qinghai-Tibetan Plateau is more complete,it has the potential to supplement and improve the study of the carbon isotope stratigraphy of the Silurian in China.

关键词： Qinghai-Tibetan Plateau Silurian Stratigraphic regionalisation Lithostratigraphy Biostratigraphy Palaeogeographical evolution

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多杂质用水网络最优化设计——水质分析及数学规划法

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化工学报 2008年第6期59卷 1441-1447页

作者：刘强阎光绪郭绍辉中国石油大学(北京)环境研发中心北京102249

在多杂质用水系统中,各操作出水水质会以不同杂质为主要因素,难以直接比较水质优劣,本文提出了水质分析与数学规划法相结合的用水网络最优化设计方法,对进出口水的极限数据进行分析得出水质状况并对它们按优劣进行排序,优先将排在前面... 详细信息

在多杂质用水系统中,各操作出水水质会以不同杂质为主要因素,难以直接比较水质优劣,本文提出了水质分析与数学规划法相结合的用水网络最优化设计方法,对进出口水的极限数据进行分析得出水质状况并对它们按优劣进行排序,优先将排在前面的、节水效果好的操作作为供水源,在水量足够的情况下,对后面的操作不予考虑,以此来简化用水网络超结构模型,然后利用GAMS软件对经过简化后的超结构进行非线性规划并求解,通过两个例子的分析,证明了本方法的有效性。

关键词：用水网络多杂质数学规划法优化 GAMS 回用

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Ordovician integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 971-1004页

作者： Xiang FANG Yong Yi ZHEN guangxu WANG Xin WEI Zhongyang CHEN yan LIANG Xuejin WU Wenjie LI Chao LI Renbin ZHAN Yuandong ZHANG State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China Geological Survey of New South Wales W.B.Clarke Geoscience CentreNSW 2753Australia University of Chinese Academy of Sciences Beijing 100049China

The Ordovician rocks on the Qinghai-Tibetan Plateau represent the oldest non-metamorphic strata,and are critical to understanding the history of regional geology and biotic evolution of the entire *** of Floian,Darriwilian,Sandbian,Katian and Hirnantian are represented in the plateau with a hiatus of variable duration occurring underneath the basal Ordovician across the *** stratigraphical regions,including the Himalaya,Gangdise-Zayu,Qiangtang-Qamdo,Songpan-Garze,and Karakoram-Kunlun-Altun,are differentiated for the Ordovician strata,which are correlated with their equivalents in the Sibumasu,Indochina,Qaidam-Qilian,Tarim-Tianshan,and the yangtze(western margin)stratigraphical *** the QinghaiTibetan Plateau,graptolites,conodonts,and cephalopods are the most common and useful fossils for the Ordovician *** Ordovician biotas of the Qinghai-Tibetan Plateau bear some distinguishable palaeobiogeographical signatures,among which the cephalopods are characterized by the flourishing actinocerids of North China affinity in the Early-Middle Ordovician,and by the thriving lituitids and orthocerids of South China affinity in the Middle-Late *** occurrences and their palaeobiogeographical evolution provide critical evidence bearing on the reconstruction of the geological history of the Qinghai-Tibetan Plateau and surrounding terranes in northeastern *** stratigraphical successions of the Cambrian-Ordovician transition in the Himalaya and Lhasa and nearby Sibumasu terranes were significantly affected by the Kurgiakh Orogeny,which resulted in the extensive unconformity between the Ordovician and the underlying rocks in most areas of the Qinghai-Tibetan *** southern Xizang,a warm-water biota of Middle Ordovician age was recovered from oolitic limestones,suggesting a likely palaeogeographical location in low-latitudes near the *** the Himalaya and Sibumasu regions,the Upper Ordovician was typified by t

关键词： Ordovician Chronostratigraphy Lithostratigraphy Biostratigraphy Palaeobiogeography Qinghai-Tibetan Plateau

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稻壳吸附剂的制备及其吸附聚丙烯酰胺的应用研究

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化工进展 2007年第8期26卷 1201-1206页

作者：邵强闫光绪郭绍辉中国石油大学(北京)环境中心北京102249

采用稻壳为原料,使用浓硫酸炭化活化稻壳方法制备稻壳活性炭。将所制备的活性炭吸附处理聚丙烯酰胺污水,确定了活性炭最佳吸附能力的制备工艺条件,并通过一系列实验得出了稻壳吸附剂吸附溶液中HPAM的最佳实验条件,并深入研究了其吸附处... 详细信息

采用稻壳为原料,使用浓硫酸炭化活化稻壳方法制备稻壳活性炭。将所制备的活性炭吸附处理聚丙烯酰胺污水,确定了活性炭最佳吸附能力的制备工艺条件,并通过一系列实验得出了稻壳吸附剂吸附溶液中HPAM的最佳实验条件,并深入研究了其吸附处理HPAM过程的吸附动力学,确定了其等温吸附线模型。实验结果表明,采用浓硫酸处理稻壳的方法制备活性炭具有方法简单、处理效果好的特点,因此在含聚污水的前期预处理中具有良好的应用前景。

关键词：稻壳吸附聚丙烯酰胺吸附动力学等温吸附线

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污泥回流比对2段进水A/O工艺处理重油加工污水效果的影响

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环境工程学报 2018年第10期12卷 2751-2757页

作者：李长刚阎光绪郭绍辉李倩玮中国石油大学(北京)理学院油气污染防治北京市重点实验室北京102249

采用2段进水A/O中试系统处理重油加工污水处理系统的水解酸化单元出水,重点考察了污泥回流比(r)对系统性能的影响。结果表明,r值的变化对氮污染物的去除效果影响较大,对有机物的去除影响较小。在r值由0.60增加到1.25的过程中,尽管水量... 详细信息

采用2段进水A/O中试系统处理重油加工污水处理系统的水解酸化单元出水,重点考察了污泥回流比(r)对系统性能的影响。结果表明,r值的变化对氮污染物的去除效果影响较大,对有机物的去除影响较小。在r值由0.60增加到1.25的过程中,尽管水量处理负荷在增加,污水、污泥和污染物的停留时间在减少,但是系统硝化和反硝化效果均明显提升。当r值高于1.25时,第1段缺氧区的硝酸盐氮去除量明显增加,但是系统硝化、反硝化效果均降低。当r值为1.25时,系统总氮去除率最高,为73.38%。此外,相对于传统的A/O工艺,2段进水A/O工艺污染物的停留时间更长,更有利于提高重油加工污水中难降解有机污染物的去除效果。

关键词：重油加工污水 2段进水A/O工艺污泥回流比处理效果

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高级氧化法提高难降解有机污水生物降解性能的研究进展

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水处理技术 2011年第1期37卷 14-19页

作者：魏令勇郭绍辉阎光绪中国石油大学环境中心北京102249

近年发展起来的高级氧化法能有效提高难降解有机污水的生物降解性能,形成了高级氧化法与后续生化技术相结合的处理技术,具有投资少、处理成本低和适用范围广等优势,显示出了广阔的应用前景。通过简要介绍化学催化氧化法、电催化氧化法... 详细信息

近年发展起来的高级氧化法能有效提高难降解有机污水的生物降解性能,形成了高级氧化法与后续生化技术相结合的处理技术,具有投资少、处理成本低和适用范围广等优势,显示出了广阔的应用前景。通过简要介绍化学催化氧化法、电催化氧化法、光化学氧化法、超声氧化法和湿式氧化法等高级氧化法的原理及研究现状,重点阐述国内外高级氧化法在提高污水生物降解性能方面的研究成果,得出了各技术的特点及其在应用中存在的主要问题,并展望了高级氧化法的发展方向。

关键词：难降解有机污水高级氧化法生物降解性能技术评价

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高压脉冲介质阻挡放电协同臭氧溶气降解聚丙烯酰胺模拟废水

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化工进展 2007年第9期26卷 1278-1282页

作者：李天鸣闫光绪郭绍辉左岩北京燕山石化公司炼油厂北京102500 中国石油大学(北京)化工学院环境中心北京102249

利用高压脉冲介质阻挡放电与臭氧联用的上流式反应器,考察了高压脉冲介质阻挡放电、臭氧和二者协同处理聚丙烯酰胺的降解情况以及COD和BOD5/COD的变化趋势;另外研究了反应器内加入TiO2催化剂对处理效果的影响,并探讨了其作用机理。结果... 详细信息

利用高压脉冲介质阻挡放电与臭氧联用的上流式反应器,考察了高压脉冲介质阻挡放电、臭氧和二者协同处理聚丙烯酰胺的降解情况以及COD和BOD5/COD的变化趋势;另外研究了反应器内加入TiO2催化剂对处理效果的影响,并探讨了其作用机理。结果表明,停留时间为10min时,放电协同臭氧溶气对聚丙烯酰胺的降解率可达51%,比单独放电和单独臭氧分别提高了27%和4%。加入TiO2催化剂后,COD去除率达到65%,BOD5/COD提高到0.37。

关键词：介质阻挡放电臭氧聚丙烯酰胺

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