PSA UF膜选择透过性研究(Ⅰ)PSA的分级

以水为沉淀剂,在室温未加恒温装置的情况下方便而有效地实现对1.00wt％PSA的DMAc 溶液中的PSA进行沉淀分级,使分子量分布宽度由原来多分散指数为3.8降低到2.0左右,分级回收率为 95.0％,为研究膜材料分子量及其分布对膜性能的影响提供了条件。     

新型ZrO_2膜管的研制及其对甲烷部分氧化的催化性能研究

利用ＳＯＬ－ＧＥＬ技术成功地制备了ＺｒＯ_２－ＣａＯ膜管，这种膜管由于能控制氧的扩散速度，并能活化它，因而容易和甲烷反应，表现了高的选择性生成甲醇、甲醛。实验发现最佳的制膜条件为：焙烧温度是７００～９００℃，膜厚４５～６０ｇＺｒ／ｃｍ￣２，ＣａＯ的最佳值为Ｘ＝０．０８～０．１５。实验也考察了最佳的反应条件，常压下反应温度为３５０℃，ＧＨＳＶ＝８０００～１００００ｈ￣（－１）。在这样的条件下获得了９５％的甲醇、甲醛选择性，大约１％转化率。     

吸附预处理减缓微滤膜污染试验研究

聚醚砜(PES)微滤膜过滤厌氧-缺氧-好氧生物脱氮除磷工艺(A2 O)出水时,膜污染较严重.废水经过硅藻土、活性白土和活性炭三种吸附剂处理后,膜通量得到明显的改善.吸附预处理减缓膜污染的效果优劣排序:活性炭活性白土硅藻土.扫描电镜图显示,废水经过吸附预处理后,膜表面不存在污垢层,这是膜通量得以改善的主要原因.     

周期逆洗型精密膜过滤的研究

本研究了对污水处理厂二次处理水采用定速、定压操作进行了周期逆洗型精密过滤，通过不同的逆洗启动压力，过滤周期，各种不同的过滤条件，对影响过滤的诸因素进行了有益的探讨。对过滤全过程中所消耗的能量进行了解折。在高速、稳定的过滤方面提出了实践性的方案。     

Analysis of Circumstance Influence Factors on HMBR for Waste-water Reclamation in Dwelling District

Circumstance influence factors on Hybrid Membrane Bio-Reactor (HMBR) process for the wastewater reclamation in dwelling district was analyzed. The main characteristic of this process is that sludge and nitrified effluent can be recycled automatically, which simplifies the operation of system and is beneficial to get the high removal of organics and nitrogen. Based on the analysis of circumstance influence factors, it is recommended that water temperature of about 20℃, influent pH of 6 -7 and DO of 1. 0 mg/L - 1. 5 mg/L in the aerobic compartment. Under these conditions, COD, BOD5, NH4+ -N, and TN were removed effectively in HMBR and the average removal efficiencies were 94.5%, 99.3%, 99.4% and 84.7%, respectively. SS and coliforms were both below the detection limits in the permeate of UF membrane module, and turbidity was less than 1NTU. The treated effluent meets the Miscellaneous Domestic Water Quality Standard (CJ25.1-89), and can be reused multipurposely such as watering of green belts, cleaning a     

水解酸化/MBR/RO处理校园生活污水的试验研究

采用水解酸化、MBR和RO的组合工艺处理东莞理工学院校园生活污水,通过中试试验,考察了组合工艺对污水的处理效果以及污水回用的可行性。实验结果表明该组合工艺可以有效去除生活污水中的污染物。MBR在工艺参数MLSS 8 000 mg/L、HRT为6 h、DO为1.0~3.0 mg/L时,出水COD小于35 mg/L、NH+4-N小于7 mg/L、TP为0.5 mg/L左右,水质达到《城市污水再生利用-城市杂用水水质》标准(GB/T18920-2002)。进一步经过RO处理后,出水COD低于1 mg/L、电导率低于10μs/cm,可以达到饮用水标准。     

Trajectory P system

Membrane computing is a branch of natural computing aiming to abstract computing ideas for the structure and the functioning of living cells as well as from the way the cells are organized in tissues or higher-order structures. Trajectories are used as a tool for modeling language operations and other related objects. A trajectory P system consists of a membrane structure in which the object in each membrane is a collection of words and the evolutionary rules are given in terms of trajectories. In this paper, we present some properties of trajectory P systems.     

猪肺炎霉形体膜毒性的研究

用本室制备的猪肺炎霉形体菌体细胞和膜制剂分别接种兔肾原代单层细胞，对其膜毒性进行研究。结果表明：猪肺炎霉形体膜制剂对单细胞有明显的致细胞病变作用。一般在接种后１～３天出现明显的细胞病变，随接种剂量的不同，单细胞病变出现的时间和程度均不相同，说明细胞膜中存在有致病因子     

关于膜分离过程中的浓差极化问题

本文论述了浓差极化的理论计算方法,并利用带激光器的两光束干涉测试技术,测定了膜表面处边界层中溶质的浓度分布断面和浓差极化值,文中还论述了消除浓差极化的一些有效措施。     

盐胁迫下外源硅调节金丝小枣根和叶片膜脂肪酸的研究

以2年生金丝小枣为试材,研究了NaCl胁迫下施硅(Si)与金丝小枣的根和叶片膜脂肪酸含量、组成及流动性的关系。结果表明:NaCl胁迫165 d,加硅与不加硅相比,金丝小枣根的饱和脂肪酸含量降低,不饱和脂肪酸含量升高,脂肪酸不饱和指数增大,膜流动性增强,碳链长度保持稳定;而在叶中则呈相反趋势。说明外源硅可调节盐(NaCl)胁迫下金丝小枣细胞膜脂肪酸含量、组成及流动性,该效应与金丝小枣器官的生理功能和生长特性有关。