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石油化工企业含油污水处理及回用水处理工艺设计 总被引:2,自引:1,他引:1
通过对石油化工企业含油污水水质特性的分析,选用除油-硫氧化-均化-气浮-A/O生化-沉淀-高密度澄清的技术路线处理含油污水,采用多介质过滤-超滤-活性炭吸附-反渗透的回用技术路线生产循环水补充水。处理后的污水场外排水中主要的污染物石油类的质量浓度不超过3.0 mg/L,氨氮的质量浓度不超过1.0 mg/L;回用装置产品水的CODCr的质量浓度不超过30 mg/L。 相似文献
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<正>1系统状况河南龙宇煤化工有限公司污水生化处理装置采用CASS工艺,由4个容积均为4 000 m3主处理单元组成,日处理9 000 m3生活污水和3 000 m3化工废水,每个主处理单元配4台射流泵(10 k W,全开)和3台罗茨鼓风机(38 k W,2开1备),曝气总管压力(实际值)为0.05 MPa。设计CASS池水质:进口COD质量浓度500 mg/L,氨氮质量浓度60 mg/L;出口COD质量浓度50 mg/L,氨氮质量浓度5 mg/L。该污水生化处理装置自 相似文献
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某焦化厂焦化废水处理应用A2/O2(厌氧-缺氧/好氧-接触氧化)工艺处理。当原水酚的质量浓度小于200mg/L时,去除率高达99%;氰的质量浓度不超过10mg/L时,去除率在95%以上,均能达到《污水综合排放标准》GB8978-1996的一级标准;当原水CODCr的质量浓度不超过3700mg/L,NH3-N的质量浓度低于350mg/L时,去除率均在90%以上,能达到二级排放标准。但当原水CODCr、NH3-N浓度波动较大、特别是高于以上值时,系统的处理能力受到影响,出水水质严重恶化。另外,该工艺不能有效的去除色度,需采取其它有效措施。 相似文献
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介绍了某煤制气企业碎煤加压气化酚氨回收后废水零排放处理中试试验情况。采用水解酸化+两级A/O+臭氧催化氧化+MBR组合作为生化-深度处理的主工艺,介绍了该工艺的流程、各工艺单元的功能、主要运行控制参数及运行调试情况。运行结果表明:经生化-深度处理后,废水中COD_(Cr)、总酚、氨氮、总氮总去除率分别达97.1%、98.7%、96.5%、89.1%,出水COD_(Cr)质量浓度60 mg/L、总酚质量浓度10 mg/L、氨氮质量浓度5 mg/L、总氮质量浓度15 mg/L,达到设计出水水质指标,满足后续中水回用段进水水质要求。 相似文献
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针对江苏如东沿海经济开发区集中式污水处理厂原工艺处理出水不达标的问题,对现有水质水量、原处理工艺、运行状况及问题进行分析,提出预处理-强化水解酸化-氧化沟-臭氧高级氧化-BAF的组合处理改造工艺。工程运行结果表明,改造后工艺处理出水COD_(Cr)质量浓度低于70 mg/L,NH_3-N质量浓度低于5 mg/L,TP质量浓度低于0.5 mg/L,三者去除率均达到80%以上,出水水质稳定达到DB 32/939—2006《化学工业主要水污染物排放标准》一级指标要求。 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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D. G. Gordeev L. F. Gudarenko M. V. Zhernokletov V. G. Kudel’kin M. A. Mochalov 《Combustion, Explosion, and Shock Waves》2008,44(2):177-189
A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation
of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from
the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO2) of density 0.08 g/cm3.
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Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008. 相似文献
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Jorge Marcelo Romero Soledad Bustillo Hugo Enrique Ramirez Maisuls Nelly Lidia Jorge Manuel Eduardo Gómez Vara Eduardo Alberto Castro Alicia H. Jubert 《International journal of molecular sciences》2007,8(7):688-694
A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out. 相似文献
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A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%. 相似文献
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塔设备改造选型的分析 总被引:2,自引:0,他引:2
就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后,着重介绍一种新型塔板(导向梯形浮阀塔板)和一种新型填料(波环填料——乾隆帕克)。 相似文献