Alga-lysing bioreactor and dominant bacteria strain

Alga-lysing bacteria have been paid much attention to in recent years. In this study, the alga-lysing strain P05 which was isolated from an immobilizing biosystem was immobilized by coke and elastic filler, forming two biological reactors. The removal efficiencies of algae, NH4^＋-N and organic matter using the two reactors were studied. The results showed that strain P05 was an ideal algal-lysing bacteria strain because it was easy to be immobilized by coke and elastic filler which are of cheap, low biodegradability and the simple immobilization procedure. After 7 d filming, the biological film could be formed and the reactors were used to treat the eutrophic water. These two reactors were of stability and high effect with low cost and easy operation. The optimal hydraulic retention time （HRT） of each reactor was 4 h. The algae removal rates were 80.38% and 82.1% （in term of Chl-α） of coke reactor and filler reactor, respectively. And that of NH4^＋-N were 52.3% and 52.7%. The removal rates of CODMn were 39.03% and 39.64%. The strain P05 was identified as Bacillus sp. by PCR amplification of the 16S rRNA gene, BLAST analysis, and comparison with sequences in the GenBank nucleotide database.     

两类微生物燃料电池治理硝酸盐废水的实验研究

采用二氧化铅阴极单室微生物燃料电池(MFC)和双室MFC,以葡萄糖为唯一电子供体,系统研究了两类微生物燃料电池的产电性能和去除硝酸盐的情况.结果表明,双室MFC闭合后,阳极室降解葡萄糖产生的电子可通过外电路传递到阴极,在生物的作用下,NO3--N得到电子被还原,平均反硝化速率达3.77 mg·L-1·d-1.双室MFC...     

中国区域可持续发展综合优势能力空间关联分析

采用空间统计方法研究了中国31个省、市、自治区的可持续发展综合优势能力的空间关联关系,结果显示中国可持续发展的总资产能力、总负债能力和综合优势能力均存在较强的空间依赖性。综合优势能力Z值与总资产Z值存在显著正相关（R=0.944）,而与总负债Z值存在显著的负相关（R=-0.952）。利用综合优势能力空间关联Z值对中国可持续发展能力进行初步的分区,并采用古典聚类（K means）方法对中国可持续发展能力进行同质性研究,利用K聚类结果对空间聚类（G统计）结果进行修正,将中国可持续发展能力划分为3种区域类型：中国东部沿海强发展区域、中国中部中等发展区域和中国西部弱发展区域。分区结果与中国传统的东部、中部、西部区域划分基本对应,东部沿海省市除海南和广西处于中等发展类型外,其他省市均处在强发展类型之列,中国中部全部省市均处于中等发展类型而中国西部全部省市均处于弱发展类型。     

Interspecific competition effects on phosphorus accumulation by Hydrilla verticillata and Vallisneria natans

The competition between submersed plants has been recognized as an important factor influencing the structure of plant communities in shallow lakes. The ability of different species to take up and store nutrients from the surrounding ambience varies, and hence plant community structure might be expected to affect the cycling of nutrients in lake ecosystems. In this study, the uptake of phosphorus by Hydrilla verticillata and Vallisneria natans was studied and compared in monoculture and competitive mixed-culture plantings. Results showed that for both studied species the phosphorus concentrations of different tissues and of whole plants was unaffected by competition. However, the quantity of phosphorus accumulated by whole plants of H. verticillata was significantly higher in mixture culture than in monoculture, while that of V. natans was lower in the mixed culture. The results indicated that H. verticillata has a competitive advantage over V. natans, when the two species are grown in competition, and is able to accumulate a greater quantity of phosphorus.     

国外尾气排放专利保护的战略分析

在当前全球竞争的背景下,我国的尾气排放产业所面临的知识产权问题非常突出,国内的各个企业面临的知识产权问题各有不同,非常复杂,而大多数企业并不像发达国家的大型企业一样拥有负责专利管理、专利情报收集与分析、专利对策研究与发展战略研究的部门。     

知识产权优势——发展知识产权经济的强大助推器

案例导读：河南新乡市金龙精密铜管集团股份有限公司是一家专业生产制造制冷冰箱、空调用精密铜管的企业集团。1995年以来,该企业不断实施品牌和资本扩张战略,培育优势知识产权＂金龙标准＂,打破美、日行业国际垄断,产量已跃居世界第一,先后攻克了日本、韩国及东南亚市场,箭头直指北美、欧洲市场。     

积累知识产权优势实现市场竞争优势化

实现市场竞争的优势化实质就是在我国全面实施知识产权战略的前提下,通过科学规划,超前布局,集中力量,在涉及我国科技、文化、经济、贸易等领域,不断积累和掌握我们的后发优势——知识产权优势。     

中宜环境医院:重构环保产业发展新模式

<正>近年来,雾霾、水污染、有毒土壤等词眼,频频走入人们的视线,环境问题已成为社会大众关注的焦点。"人生病了,需要进医院治疗,需要医生、医疗器械和药剂。环境生病了,同样也需要治理。"中国宜兴环保科技工业园管委会主任朱旭峰生动形象地诠释了"环境医院"的诞生背景。在宏观经济领域,危机之后缓慢而痛苦的恢复过程被称为"新常态"。当前的环保行业,也表现出了从"无序"向"有     

欧洲膜技术的研究与应用

欧洲各国由于地理位置、人口的压力,对膜技术有较大需求和应用市场,在全球膜技术研究与应用领域处于领先地位。了解欧洲膜技术研究及应用状况、存在问题,预测未来发展趋势,对我国膜行业的发展有重要的借鉴作用。分析表明,2013年欧洲国家在SCI杂志发表有关膜技术的论文1 109篇,增长趋势明显;法、德在膜技术研究领域处于领先地位。市场调查表明,微滤膜与超滤膜在欧洲膜市场中占据主导地位,分别占其销售总额的46%和23%;当前欧洲的膜产业主要集中于MBR与海水淡化,MBR在欧洲工业废水中的应用较早,垃圾渗沥液与食品饮料行业占据较大份额。欧洲的地理条件,日益严格的用水标准及相关政策法规为膜技术的应用提供了良好的外部环境,市场的充分竞争也将催生更有优势的膜产品与技术,进而增大其在全球膜市场中的份额。借鉴欧洲膜产业的发展经验,我国需通过运用经济与技术的双重调节手段,健全膜行业标准与政策法规,培育龙头企业提升我国膜行业市场的国际竞争力。     

微囊藻群体的竞争优势及其形成机制的研究进展

群体的形成、增大和形态的持久维持是微囊藻获得种群优势进而形成水华并维持优势的前提之一。该文首先介绍了微囊藻群体在藻类种群竞争方面的优势,然后在介绍已有的浮游动物牧食诱导微囊藻群体形成的基础上着重综述了微囊藻毒素及重金属离子等环境因子促进微囊藻群体的早期形成、增大和形态的持久维持的最新研究进展。作者推测微囊藻群体的形成可能是在藻类快速生长的基础上,浮游动物的牧食压力、微囊藻毒素及重金属离子等环境因子共同作用下联合驱动的结果。因此,开展环境因子协同作用对微囊藻早期群体形成诱发效应的研究对揭示水华暴发机理具有非常重要的实际意义,同时可为水华的预警及控制提供科学的参考数据。