水解酸化+序批式活性污泥法工艺处理中药制药废水

介绍了水解酸化+序批式活性污泥法(SBR)工艺处理中药制药废水的工艺设计和调试情况。经过一段时间的运行表明,该工艺操作灵活,管理方便,处理效果稳定,出水水质达到《污水综合排放标准》(GB8978—1996)和《渭河水系(陕西段)污水综合排放标准》(DB61/224—2006)中的二级标准。可满足中药制药废水水量、水质波动大的要求。     

水解酸化+SBR工艺在禽类加工废水中的应用

介绍四川某企业采用水解酸化+SBR工艺治理禽类加工废水的应用实例.运行结果表明,出水水质各项污染指标均达到肉类加工工业水污染物排放标准(GB13457-92)一级标准.该工艺处理效果好,能广泛应用于禽类加工废水的处理.     

水解酸化-SBR工艺处理啤酒废水

介绍水解酸化-序批式间歇反应器(SBR)处理啤酒废水的工艺和运行情况．运行结果表明：该工艺具有耐冲击负荷能力强、运行稳定、处理效果好等特点。处理后的出水达到国家一级排放标准(GB8978—1996)。     

水解酸化—填料式SBR技术处理啤酒废水

采用水解酸化－填料式SBR工艺处理啤酒废水。处理后出水水质达到GB8978－96国家污水综合排放标准。     

国内文摘

预氧化／ABR/SBR／水解酸化／接触氧化法处理制药废水张志海,贺金泉等,《中国给水排水》,Vol26,No10,51～53在某头孢类抗生素制药厂废水处理工程中,采取高、低浓度废水分别处理的方式,对高浓度废水先进行Fenton预氧化再与低浓度废水混合,采用ABR／SBR／水解酸化／接触氧化工艺处理,出水水质达到了排放标准。详细介绍了设计参数及运行管理经验,可供设计人员参考。     

预处理＋水解＋SBR工艺处理制药废水

采用预处理＋水解＋SBR工艺处理制药废水,设计处理规模为500m^3／d。实践证明,通过该工艺处理后,出水水质达到《污水综合排放标准》三级标准。     

水解酸化+SBR工艺处理生猪屠宰废水

生猪屠宰废水中含有大量COD(cr)、BOD5、NH3-N、SS、动植物油类等污染物，若不处理至达标直接排放，势必对环境造成严重污染。本工程主要采用水解酸化+SBR处理工艺，废水经处理后达标排放，该工艺耐冲击负荷能力强，占地面积小，投资费用低，运行成本少，操作维护方便。     

A—SBR法处理制药废水的工程实践

采用酸化（A—acidification）一序批式活性污泥法（SBR—sequencing batch reactor）组合工艺处理制药废水。其工艺原理和工程实践表明：厌氧（催化）水解酸化过程使废水可生化性明显提高,SBR处理率有较大增加。处理效果稳定,处理后水质达到GB8978—88新建企业一级排放标准,符合回用的要求。     

300T/D屠宰废水集中处理工程设计

屠宰污水若不经处理直接排放,对环境卫生和人畜健康将产生很大危害。本设计采用"隔油气浮+水解酸化+接触氧化+MBR"工艺处理屠宰废水,处理后的排放水能够达到《城镇污水处理厂污染物排放标准》(GB18918-2002)一级A标准。该系统投资少、运行成本低,操作管理简单可靠,能够为我国中小型屠宰废水处理站的设计提供借鉴。     

预处理＋厌氧水解＋SBR处理农药废水

介绍了采用预处理＋厌氧水解＋SBR工艺处理农药废水的方法,设计处理规模200m^3／d。实践证明,通过该工艺处理后,出水水质达到《污水综合排放标准》（GB8978-1996）一级标准。     

氢气纯度分析方法准确性的探讨

ONACCURACYOFANALYSISOFOFHYDROGEN1前言我公司目前应用的氢气纯度分析方法有两种,一种是爆炸反应法,另一种是焦性没食子酸吸收法。几年来,人们对两种分析方法的准确性曾有过褒贬不一的评论。这里我们也谈谈自己粗浅的观点。2爆炸法测定氢气纯度一定量的氢气样品与适量的空气之均匀混合物因反应后生成液体水而引起气体体积减少,减少的体积等于参加反应气体体积之和。其中l／3为氧气,2／3为氢气。根据氢气取样量和反应前后混气体体积之差,以及氢气在反应中的体积比例关系,可计算出样品的氢气纯度。计算公式式中：A一混…     

COMPARISON OF METHODS OF ANALYSIS OF GYPSUM1

The different analytical methods proposed for the evaluation of gypsum have been subjected to an experimental test. A combination method, consisting of a fusion with KHCO₃ and determination of CaO by KMnO₄ titration, the SO₃ by Andrews method of titration of BaCrO₄ has been found to give very reliable results with the least consumption of time.     

SEDIMENTATION OF BINARY MIXTURES OF PARTICLES OF UNEQUAL DENSITIES AND OF DIFFERENT SIZES

A model is developed for the sedimentation from a suspension of two particle species of unequal densities and of different sizes. The composition and the thickness of various layers in the sediments are predicted using graphical and analytical methods. The model predictions were in excellent agreement with experimental results, when the particle size ratio was ≥ 108. When size ratio of the particles was 2.60 and 4.31 the agreement occurred in about 50 percent of the cases.     

HEASUREHENT OF INSTANTANEOUS RATES OF LOSS OF VOIATILE COMPOUNDS DURING DRYING OF DROPS

A novel technique serves to monitor instantaneous rates of loss of a volatile solute from a suspended drop during drying. A highly sensitive electron capture detector is used to monitor concentrations of SF6 released into a flowing gas stream from a suspended, drying drop. Simultaneously, the appearance and morphological development of the drop are monitored with a video camera. This provides the wherewithal of relating instantaneous rates of loss of the volatile solute to particular events during the development of particle morphology.

Initial experiments have been carried out with drops of aqueous solutions of glucose, sucrose, maltodextrin and coffee extract. The results clearly display the onset of the volatiles-retentive selective diffusion phenomenon. There is also substantial loss of the volatile component later in the drying process, when the drops undergo repeated ex ansion, bursting and cratering due to the formation of internaf bubbles. These experiments appear to be the first quantitative demonstration of major losses accompanying changes in drop morphology.     

茶多酚提取方法进展

本文综述了国内外现有茶多酚提取方法的现状以及近期的研究进展，并对其优缺点进行了评价。这将有助于中低档茶的综合利用和茶多酚的进一步开发应用。     

几种针状焦性能对比

针状焦分石油系和煤系两大类,这主要取决于针状焦的原料来源。在同一系列中由于原料不同和工艺条件不同 ,针状焦的各自性能也不相同。针状焦是生产超高功率石墨电极和高功率石墨电极的主要原料 ,针状焦的性能对石墨电极的质量有至关重要的影响。所以对针状焦性能以及其对石墨电极质量影响的研究十分必要的。以下是常用的几种进口针状焦和国产针状焦的性能对比。１原料性能分析对比原料试样包括４种针状焦 ,其中两种为进口针状焦：三菱针状焦和新日化针状焦;另两种为国产针状焦：鞍山针状焦和锦州针状焦。其中除锦州针状焦是石油系针状焦外…     

ANALYSIS OF RECENT MEASUREMENTS OF THE VISCOSITY OF GLASSES

Viscosity of Simple Soda-Silicate 500° to 1400°C Comparison of the results given by English with those of Washburn, Shelton and Libman, indicates a discrepancy in the absolute values of log₁₀ viscosity amounting to 0.6, those of Washburn et al., being relatively too high. If correction for this is made, the isothermal curves of log₁₀ viscosity as a function of soda content are smooth up to 50% Na₂O, showing no inflection. The observations as a function of temperature T are all represented within accidental error by an equation of the type where all three constants vary regularly with the composition. Change of Viscosity of Glass (6SiO₂, 2Na₂O) due to Molecular Substitution of CaO, MgO and Al₂O₃ for Na₂O The effect is clearly brought out by plotting (from the results of English) the change of log₁₀η due to the substitution as a function of temperature. The curves each show a sharp bend at a temperature between 840° and 1050°C, which is designated the aggregation temperature T_a. If we divide these curves by the corresponding percentage substituted, we get curves for each oxide which are straight and parallel below the aggregation temperatures, the slopes (increase of change of log₁₀η per 100°C) being −0.056 (CaO), −0.055 (MgO), −0.018 (A1₂O₃) per per cent oxide substituted. For substitution of 1/2 molecule the slopes are −0.325 (CaO), −0.23 (MgO) and −0.18 (Al₂O₃) per 100°. At the aggregation temperature the change of log₁₀η per per cent is a minimum, 0.03 to 0.06 for CaO, 0.12 for MgO, 0.07 for Al₂O₃. Evidence of Aggregation in Glasses, from viscosity Measurements The sharp bends in the plots of change of log₁₀η due to substitution of an oxide for Na₂O, suggest the beginning of molecular aggregation at these temperatures. These aggregation temperatures are close to the devitrification temperatures, but the effect on the viscosity curves cannot be due to actual devitrification since it does not change with time. Taking the aggregation temperatures as equal to devitrification temperatures, additional isotherms are roughly sketched into the equilibrium triangle of the system Na₂O-CaO-SiO₂. Change of Viscosity of Glass (4SiO₂, 2Na₂O) due to of Substitution of B₂O₃ for SiO₂ The change of log₁₀η (from the results of English) is plotted as a function of temperature, and also the change of log₁₀η per per cent B₂O₃. The curves are more complex than for the substitution for Na₂O.     

环氧树脂羟基值测定方法的研究

利用乙酸酐、吡啶和浓硫酸混合的乙酰化试剂测定环氧树脂中羟基值含量的方法具有操作简便、滴定终点明显和分析结果误差小等优点。     

骑式摩托车油箱喷涂工艺的改进

面对日益激烈的市场竞争,摩托车油箱外观质量越来越成为影响销售的因素之一。文章介绍了改进工艺后的油箱涂装,该涂装体系提高了油箱外观的丰满度,降低了油箱涂装的生产成本。     

聚酰亚胺的合成法

本文评述了缩聚型聚酰亚胺的主要合成方法和近年来国际上在合成中所做的探索。