电除尘器管状芒刺类电晕极电参数模拟计算

推导了不等线径、不等线距圆线组合电除尘器伏安特性计算关系,利用不等线径、不等线距圆线组合对管状芒刺类电晕极作了近似简化处理.采用静电场与电晕电场相叠加的办法建立了管状芒刺类电晕极电场分布的一种计算方法.与实验值对比表明,该方法的计算结果是可靠的.     

一株好氧反硝化细菌的鉴定及其在废水处理中的应用

从武汉市郊稻田土壤中分离得到一株好氧反硝化细菌HS-03,对其反硝化能力进行了研究.结果表明:细菌HS-03在好氧条件下能有效去除人工废水中的NO3-(10mmol/L),去除率达90%以上,并且在反应过程中没有NO2-的积累.菌株HS-03与Pseudomonasstutzeri的16SrDNA序列具有99.1%的相似性.对该菌株的16SrDNA序列以及生理生化特征分析表明,细菌HS-03是P.stutzeri的一个新分离种.实验采用ClastalW和PHYLIP程序对该菌株与报道菌进行了系统发育进化分析.图5表2参14     

废水生物处理技术研究进展

分析了废水生物处理的特点和废水生物处理反应器的发展概况，对废水生物处理技术的新进展作了简要的介绍，并列举了一些典型例子。     

Preparation and characterization of a novel hybrid chelating material for effective adsorption of Cu(Ⅱ) and Pb(Ⅱ)

The discharge of heavy metal ions such as Cu~2+and Pb~2+poses a severe threat to public health and the environment owing to their extreme toxicity and bioaccumulation through food chains Herein, we report a novel organic–inorganic hybrid adsorbent, Al(OH)_3-poly(acrylamide dimethyldiallylammonium chloride)-graft-dithiocarbamate(APD), for rapid and effectiv removal of Cu~2+and Pb~2+. In this adsorbent, the "star-like" structure of Al(OH)3 poly(acrylamide-dimethyldiallylammonium chloride) served as the support of dithiocarbamat(DTC) functional groups for easy access of heavy metal ions and assisted development of larg and compact floccules. The synthesized adsorbent was characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), Fourier transform infrared spectroscopy(FTIR), and thermogravimetric analysis(TGA). APD was demonstrated to hav rapid adsorption kinetics with an initial rate of 267.379 and 2569.373 mg/(g·min) as well a superior adsorption capacities of 317.777 and 586.699 mg/g for Cu~2+and Pb~2+respectively. Th adsorption process was spontaneous and endothermic, involving intraparticle diffusion and chemical interaction between heavy metal ions and the functional groups of APD. To assess it versatility and wide applicability, APD was also used in turbid heavy metal wastewater, and performed well in removing suspended particles and heavy metal ions simultaneously through flocculation and chelation. The rapid, convenient and effective adsorption of Cu~2+and Pb~2+give APD great potential for heavy metal decontamination in industrial applications.     

电力安全工器具智能管理系统的研发及应用

电力安全工器具种类多、数量大，作为保障各类电工操作安全、有序作业必不可少的器具，高效率、专业化和智能型管理是电力企业安全质效提升的重要举措。针对现场电力安全工器具管理存在的诸多问题，基于“云平台”自动模式识别技术，研发电力安全工器具智能管理系统，集各个安全工器具身份标识、位置信息、出入库记录、损坏报废标记以及超过检测周期警报提示为一体。通过周期测试和现场应用，结果表明：该系统以安全工器具个体为管理单元，分层分类，构建大数据库，信息覆盖全面完整；分布式区块链技术有力支撑平台数据的实时更新和资源共享，提升管理效率；指纹登录，智能感应，出入库时间缩短了2/3，取用便捷，提高工作效率；智能扫描检测功能，及时警示反馈，有效避免现场违规使用事件的发生，助力安全生产，夯实安全质效。     

新常态下中国绿色增长:机遇和挑战

在环境与发展新常态下,中国实现绿色增长既面临众多挑战,也迎来重要机遇。中国应抓住机遇,加速推动绿色增长。一是在国家层面释放更为明确的推动绿色增长的信号;二是优化区域布局;三是通过技术和制度创新实现全要素生产率的提高;四是大力推动城镇绿色化、工业智能化、农业生态化进程;五是在涉及绿色增长的关键部门加强各项配套政策措施;六是构建有利于绿色增长的财税金融政策体系;七是大力培育绿色消费市场,加快绿色科技创新和应用;八是促进环境治理体系和能力现代化,推动环境管理转型;九是发挥社会公众在推动绿色增长中的力量和主体作用。     

绿色修井作业的环保控制

文章主要阐述了修井作业过程中产生污染物的原因和污染机理,介绍了6种井下作业施工中清洁生产工艺技术,提出了废物资源化利用方式,并针对稠油井常规维护或大修施工前、中、后三期进行分级控制,逐步实现了清洁生产。     

应用化学质量平衡模型解析烟台市污染源的排放贡献率

根据烟台地区污染排放特点,应用化学质量平衡模型（CMB8）进行污染源解析分析,得出每个污染源对于受体地区颗粒物体样本的排放贡献率。最终的模型结果显示,建筑尘和居民烯煤锅炉排放,海洋尘和冶炼厂排放对于大气环境污染也有一定的贡献,以上分析可以为城市污染源治理提供一定的依据。     

棚户区改造过程中环境污染问题的产生与防治措施

本文分析了棚户区改造过程中产生的环境污染问题,并就产生的原因及危害进行了分析,主要污染因子为建筑垃圾、扬尘、废弃塑料、油类、重金属、持久性有机物等.针对污染物产生的环境危害提出了防治对策.     

Difference in calcium ion precipitation between free and immobilized Halovibrio mesolongii HMY2

Biomineralization has become a research focus in wastewater treatment due to its much lower costs compared to traditional methods. However, the low sodium chloride (NaCl)-tolerance of bacteria limits applications to only water with low NaCl concentrations. Here, calcium ions in hypersaline wastewater (10% NaCl) were precipitated by free and immobilized Halovibrio mesolongii HMY2 bacteria and the differences between them were determined. The results show that calcium ions can be transformed into several types of calcium carbonate with a range of morphologies, abundant organic functional groups (C-H, C-O-C, C=O, etc), protein secondary structures (β-sheet, α-helix, 3₁₀ helix, and β-turn), P=O and S-H indicated by P2p and S2p, and more negative δ¹³C_PDB (‰) values (-16.8‰ to -18.4‰). The optimal conditions for the immobilized bacteria were determined by doing experiments with six factors and five levels and using response surface method. Under the action of two groups of immobilized bacteria prepared under the optimal conditions, by the 10^th day, Ca²⁺ ion precipitation ratios had increased to 79%-89% and 80%-88% with changes in magnesium ion cencentrations. Magnesium ions can significantly inhibit the calcium ion precipitation, and this inhibitory effect can be decreased under the action of immobilized bacteria. Minerals induced by immobilized bacteria always aggregated together, had higher contents of Mg, P, and S, lower stable carbon isotope values and less well-developed protein secondary structures. This study demonstrates an economic and eco-friendly method for recycling calcium ions in hypersaline wastewater, providing an easy step in the process of desalination.