共查询到20条相似文献,搜索用时 46 毫秒
1.
利用厦门海域的淤泥生产烧结砖,通过配方设计、成型及试验得出海淤泥砖的各项性能,结果表明海淤泥烧结的砖,可用于替代传统的烧结粘土砖,且以海淤泥作为烧结砖的主要原料,解决了原料的来源问题,从而不仅保护了耕地和农业生产,也保护了生态环境,具有极好的环保效益。 相似文献
2.
3.
该文以胶东半岛沿海地区的海草房为研究对象,通过分析其建造工艺和建筑材料的特点,对海草房的生态性进行了研究,揭示了传统民居建筑材料的现实价值所在,以期倡导在现令城乡建设中新型材料的开发和利用。 相似文献
4.
5.
6.
海淤泥资源化利用相关技术研究分析 总被引:1,自引:0,他引:1
调研及分析表明,江苏沿海广泛存在的海淤泥具有与耕地黏土极为相近的化学成分和良好的可塑性,是烧结墙材理想的原材料。海淤泥脱盐技术,是影响海淤泥烧结砖性能的重要因素,将潮下带海淤泥进行简单脱水即可达到除盐目的,在含水率小于50%时,可以满足墙材的制坯要求。通过结合近年来对海淤泥脱盐技术的研究成果,系统分析介绍了各类海淤泥脱水除盐技术的特点,提出了可供产业化使用的高压透析脱水及渗透脱水除盐技术。进一步研究指出,对港池、航道疏浚海淤泥采用离心脱水技术,将吸淤、脱水及制坯整合为成套工艺,安装在吸淤船上,可能成为未来疏浚海淤泥资源化利用极具前景的绿色产业。 相似文献
7.
8.
9.
日本拟在大阪湾建一座巨型海上浮体构筑物。该构筑物被形象地称作“浮在海上的森林岛” ,计划 2 0 0 4年开工 ,2 0 0 7年建成。其用途之一就是大阪申办奥运会成功后作为奥运村。下面仅对其设计研究情况作一简要介绍。1 概 况该构筑物由 7个浮体组成 ,核心浮体 (甲板 0 )为六角形 ,其余 6个浮体 (甲板 1~甲板 6 )呈花瓣状与甲板 0连接 (见图1)。甲板 1~甲板 6每个甲板宽 12 0m ,长 2 45m ,高 9 5m ,连接后的外径约为 5 70m ,甲板总面积约为 16 2万m2 ,用钢约为12 2万t,可容纳上万人。工程预算 80 5亿日元 ,加上基础设施、环境评… 相似文献
10.
对连云港磷尾矿的化学成分、矿物成分和颗粒级配进行系统的研究。结果表明:连云港磷尾矿在化学组成上属于低硅、铝,高钙组分的工业废渣;主要矿物为白云石、方解石,其次为石英及白云母;颗粒级配为连续级配,属于细砂粒级。将其掺入到海淤中,能够烧制成技术性能符合国标要求的多孔砖。 相似文献
11.
Interaction of light metals and protons with seaweed biosorbent 总被引:3,自引:0,他引:3
Based on their displacement by protons, the following ascending order of light metals affinity toward Sargassum fluitans biomass was observed: Na+ K+ < Mg2+ < Ca2+ < Al3+. Higher biomass-metal affinities resulted in lowering the leaching tendency of (polysaccharidic) biomass components during the sorption process. More than 12% weight loss of protonated biomass occurred during 2 min of sorption, which should be considered in all stoichiometric and sorption calculations. The rate of proton uptake for Na-loaded and Ca-loaded S. fluitans biomass at pH 4.5 was lower than the rate of desorption at pH 1.1. In the case of Na-loaded S. fluitans, the predominant proton uptake rate was of a zero order. Na uptake by protonated S. fluitans biomass did not take place at all in the presence of Ca and Al ions. However, it increased in the absence of other light metals. Since the affinity of Ca2+ for the biomass was much greater than that of Na+, the three-component system of Na+, H+ and Ca2+ could be simplified into proton-calcium ion exchange. The initial rate of Ca uptake with protonated S. fluitans biomass at pH 4.5 was lower than that of proton release from biomass. Approximately 20% of Ca2+ sorbed was bound to the binding site as a mono-valent ion. Titration and stoichiometric indications pointed to the fact that Al was being sorbed as a hydroxyl complex. 相似文献
12.
根据已有的研究成果,全面阐述了海洋混凝土腐蚀的研究内容进展,对国内外研究海洋混凝土的实验方法进行了总结,提出海洋混凝土腐蚀还存在许多值得研究的方面。 相似文献
13.
14.
欧美国家棕地开发策略研究 总被引:1,自引:1,他引:1
基于利益相关者理论,分析了欧美国家"棕地"开发过程中各利益相关者之间的关系以及所承担的责任,探寻"棕地"开发在规划、法规以及经济三个层面上的策略,以期指导我国"棕地"开发少走弯路。 相似文献
15.
炉渣去除养鱼水中藻类的研究 总被引:1,自引:0,他引:1
就如何有效地控制藻类的生长,通过研究渣水比对去除藻类的影响以及吸附COD对吸附藻类影响等的试验,分析探讨了用炉渣吸附法去除养鱼水中的藻类效果明显,具有广阔的应用前景。 相似文献
16.
17.
18.
19.
从青岛温泉镇某池塘中分离得到一种微藻,为耐高浓度CO2的绿藻.该微藻在平面培养基上的藻落呈墨绿色,表面粗糙较湿润,细胞呈月牙状,长约为6~8μm,细胞最宽处约为1μm,属月牙藻属,命名为KX-2藻.KX-2藻对培养的物理条件具有较宽的适应范围,在温度为20-25℃、光照强度为25000Lux、初始pH=6.0~7.0的范围内生长稳定.当CO2浓度(体积分数)为10%~15%时,KX-2有较高的生长速度,在C02体积分数为15%时,生长最好,5d培养后的藻密度为84.27×10^6个/mL,并且在CO2体积分数为60%~80%时能够缓慢增长,对高浓度CO2环境表现出较好耐受性.研究结果表明,KX-2藻有望用于固定工业尾气中的高浓度CO2. 相似文献
20.
Steroid hormones are vital for regulation of various biological functions including sexual development. Elevated concentrations of natural and synthetic androgenic steroids have been shown to adversely affect normal development in indigenous aqueous species. Androgens and their synthetic analogs released from agricultural activities and wastewater discharge may be introduced into drinking water sources. The fate of androgenic steroids during drinking water treatment, specifically the use of chlorine for biological control, has not been extensively studied. As such, this study focuses on the hypochlorite oxidation of a select number of androgenic compounds that vary in their structural composition. Where a favorable reaction is observed, we also attempt to describe the product distribution. The results show compounds that possess a ketonic functional group conjugated with a double bond inhibit oxidation by hypochlorite in the absence of biological or indirect oxidative pathways. Oxidative reactivity in the presence of hypochlorite was favorably correlated with the presence of isolated unsaturated carbon bonds and resulted in various transformation products. 相似文献