曝气生物滤池处理生活污水的应用

采用曝气生物滤池工艺处理日排2000m3左右生活污水,在进水CODCr,BOD5,SS,NH3-N的质量浓度分别为350,168,300,38mg/L时,经处理后出水CODCr,BOD5,SS,NH3-N的质量浓度分别为43,16.8,15,12.6mg/L,达到了《污水综合排放标准》(GB8978-1996)一级标准。     

UASB-氧化沟组合工艺处理酱油生产废水

采用UASB-氧化沟组合工艺处理酱油生产废水,工程运行结果表明,在进水CODCr,BOD5,NH3-N的平均质量浓度分别为1506,706,74.5mg/L条件下,出水CODCr,BOD5,NH3-N的平均质量浓度分别为68,18,6.6mg/L,符合广东省地方标准《水污染物排放限值》(DB44/26-2001)中一级标准的要求。     

医院污水处理工程设计及运行

某人民医院的污水处理原来采用化粪池+臭氧氧化方法,出水不达标。对该污水处理站进行改造,采用水解+接触氧化+二氧化氯消毒工艺,在进水CODCr,BOD5,NH3-N的质量浓度分别为304,56.6,11.0mg/L的条件下,出水中的CODCr,BOD5,NH3-N的质量浓度分别为6,1.24,3.0mg/L。达到污水综合排放标准中的一级标准。     

无泡供氧硅橡胶膜生物反应器处理生活污水新工艺及动力学研究

对无泡供氧式平板硅橡胶膜生物反应器进行了研究。测定了氧的泡点压力,分别讨论了水力负荷和氧压对CODcr、BOD5和NH3-N等污染物去除率和出口浓度的影响。实验结果表明,在适宜的水力负荷6.12m3/(m2.d)和进水污染物浓度CODcr220mg/L、BOD5140mg/L和NH3-N45mg/L的实验条件下,CODcr、BOD5和NH3-N的去除率分别为91.5%、93.3%和92.1%,出口浓度分别为18.6mg/L、9.33mg/L和3.56 mg/L,均低于《生活杂用水水质标准》(CJ/T48-1999)中规定的出水指标。建立了CODcr和BOD5降解动力学模型,在CODcr和BOD5进水浓度分别低于685.7mg/L和421mg/L的范围内,模型计算值与实验值基本吻合,可用来预测CODcr和BOD5出水指标。     

乳酸废水处理站改造及运行效果分析

在原有废水处理设施的基础上,对原有水处理工艺进行了改造,强化了预处理过程,采用UASB+CASS工艺处理乳酸生产废水,在进水COD为3 256 mg/L、BOD5为1 320 mg/L、SS和NH3-N的质量浓度分别为635、31 mg/L时,出水水质稳定,COD为98mg/L、BOD5为26mg/L、SS和NH3-N的质量浓度分别为75和22mg/L,达到GB8978-1996表4中规定的二级要求,去除率分别可达到97.0%、98.0%、88.2%和29.05%。该项工程可为类似高含量有机废水的处理提供参考。     

氧化偶合絮凝技术强化处理城市污水的动态模拟试验

研究了氧化偶合絮凝技术强化处理城市污水的性能.结果表明,在药剂投加量为14 mg/L,沉淀时间为60min,进水COD、BOD5、TP、SS、NH3-N的平均质量浓度分别为206、113、3.7、134、26 mg/L时,经氧化偶合絮凝强化处理工艺出水CODCr、BOD5、TP、SS、NH3-N的平均质量浓度分别为55、18、0.3、16、12 mg/L,其去除率分别为73.2%、84.4%、92%、89%、55%,处理效果优于一般化学强化一级工艺.     

气浮-厌氧-MBR工艺处理聚四氢呋喃生产废水的中试研究

采用涡凹气浮-高效厌氧反应器-膜生物反应器组合工艺对聚四氢呋喃(PTMEG)生产废水进行现场中试。试验结果表明:在进水CODCr、BOD5、NH3-N的平均质量浓度分别为6 510、3 110、24 mg/L条件下,经过该工艺处理后,出水CODCr、BOD5、NH3-N的平均质量浓度分别为44、4.4、小于1 mg/L。出水水质达到了GB8978—1996《污水综合排放标准》一级标准的要求。     

麦白霉素、香菇菌多糖制药废水的处理

采用水解酸化-厌氧-好氧-高效纤维过滤-活性炭吸附工艺处理生产麦白霉素、香菇菌多糖的制药废水,工程运行结果表明,在进水COD、BOD5、NH3-N的质量浓度分别为9357、4617、33mg/L的条件下,处理后的出水COD、BOD5、NH3-N的质量浓度分别为90.9、16.4、12.9mg/L,处理后的外排废水符合《污水综合排放标准》(GB8978-1996)一级标准限值的要求。     

厌氧复合床-序批式活性污泥法处理屠宰废水

采用厌氧复合床-序批式活性污泥法处理屠宰废水。在进水水质CODCr,SS,BOD5和NH3-N的质量浓度分别为1624,715,975和42mg/L的情况下,运行结果表明,处理后的水质CODCr,SS,BOD5和NH3-N的质量浓度分别达到了87,82,53和3.67mg/L。该工艺工程投资省,运行费用低,处理效果好,在中小型屠宰企业的废水治理中具有推广价值。     

垃圾渗沥液处理站的工艺改造

某垃圾卫生填埋场渗沥液处理站的原有处理设施不能满足GB 16889—2008《生活垃圾填埋场污染控制标准》中的水质要求,需要进行工艺升级改造。针对晚期垃圾渗沥液的水质特点,改造后采用混凝沉淀-生化-MBR-UF-NF-RO工艺,在进水CODCr、BOD5、SS、NH3-N的质量浓度分别为1 570、507、225、659 mg/L时,出水CODCr、BOD5、SS、NH3-N的质量浓度分别为62、12、0、16.9 mg/L,达到GB 16889—2008的要求。     

乙烯酮(双乙烯酮)下游产品废水的治理技术

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。     

几种乙炔加压设备性能的比较

阐述并比较了几种加压设备在乙炔加压清净过程中的性能和特点。     

三种煤样燃烧热的测定

本文通过三个厂家提供的三种煤样燃烧热的测定,由测定结果综合得出3号煤样燃烧最完全、燃烧热也最大,是三个煤样中最好的一种。     

Semi-empirical equation of state of metals. Equation of state of aluminum

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. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

小议汽车涂装工艺设计对涂装成本的影响

论述了涂装工艺设计对涂装设备投资、涂装生产成本的影响。     

Measurement of the gradient of viscosity with composition of mixtures of non-ideal gases

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%.     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

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.     

塔设备改造选型的分析

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）。     

Effect of degree of deacetylation of chitin on the properties of chitin crystallites

In the present article, chitin from crab shell was systematically deacetylated using a NaOH treatment with control of the reaction time. The degree of deacetylation, monitored using solid-state NMR, revealed that the reaction was pseudo-first order. Based on this, swollen and NaOH-saturated particles are proposed as the reaction system. The weight loss of the partially saponified and neutralized samples after HCl hydrolysis increased linearly with the degree of deacetylation. The crystallinity of the samples was found to increase after acid hydrolysis. According to conductimetric titration, the surface charge density of the crystallites, after acid hydrolysis, was found to increase with base treatment time. The effect of surface charge on the formation of a chiral nematic phase, due to the rodlike nature of the crystallites, was explored. These results show that because the contribution of charged particles to the ionic strength was significant the double layer compression was affected, especially since the surface charge density was close to the Manning limit. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:373–380, 1997