危险化学品活性反应危害及混配危险的规则研究(ⅩⅢ)

第四十八类 非金属氢化物 活性特点: 非金属氢化物具有EHn活性基团,大多数挥发性氢化物的最低爆炸氧浓度几乎是零.因此,在处理非金属氢化物时,全部除掉空气或氧气对安全操作是重要的.在氢化混合物中有杂质时会更进一步增加着火的危险.     

城市居住小区的碳源-碳汇实证研究

碳源-碳汇特征的研究是建设低碳小区的先决条件。论文分别使用了物料均衡法和生物量统计法对周家泉小区碳源-碳汇进行了计算分析,并对按居住区能源供应标准计算的排放值与实际排放值进行了对比。结果显示:(1)实际排放中,直接排放量占小区总排放量的47.1%,其中煤炭消耗排放量最大。间接排放占小区排放总量的52.9%,其中电力消耗排放占到了93.6%,为小区能源消耗的最大排放源。(2)按居住区燃气供应指标为小区居民提供能源能在充分满足居民需求的前提下有效减少CO2排放量。按电力供应指标计算的CO2排放量大于实际电力消耗排放。供水及污水处理技术是减少用水排放的关键因素。(3)绿化带是小区主要碳汇要素,仅通过实现国家规定的30%的绿地率并不能满足小区碳汇需求。在小区碳源碳汇研究的基础上提出了控制和减少小区CO2的对策建议,以期为低碳小区建设提供参考。     

高校水管理方法研究述评

创建节水型校园,既是降低办学成本的要求,也是培养学生节水意识、节水习惯的重要途径,同时也符合可持续发展的思想。首先阐述了加强高校用水管理的必要性;其次,综述了国内外各类水系统管理的研究现状;然后,从供水、用水和排水三个方面分析了高校水系统管理研究的现状,指出了目前高校水系统管理的研究内容单一,整体研究缺乏等不足之处,最后提出了未来高校中水回用管理,雨水资源化管理,分质供水管理,水系统监管平台的建立等研究热点。     

SO2 emission cap planning for Chengdu-Chongqing economic zone

The SO₂ emission sources of the Chengdu-Chongqing economic zone were divided into 556 emissions units according to four different categories, which are city, industry, point sources, and area sources. The CALPUFF model was used to calculate the contribution of each unit, and consequently obtain an influence-transferring matrix. To ensure that the SO₂ concentrations of 46 cities and counties in the Chengdu-Chongqing economic zone meet air quality standards, an emission optimization model was developed to calculate optimal emissions of each emission unit under different development scenarios. The result showed the optimal emissions of SO₂ by different provinces and industries. To achieve the target of restricting and optimizing development, corresponding planning programs were developed for every district.     

双氰胺-甲醛絮凝剂处理硝基酚类印染废水的脱色和COD去除效果研究

利用改性双氰胺甲醛絮凝剂处理硝基酚类印染废水,改性絮凝剂n(双氰胺+尿素):n(氯化铵):n(氯酸盐):n(甲醛)=1.0:1.2:0.06:1.5。染料的脱色率和COD去除率都随着改性絮凝剂用量的增加而增加,投加1000mg/L絮凝剂时,脱色率和COD去除率分别可达85%、84%,该改性双氰胺絮凝剂具有很好的脱色和COD去除效率,其经济性也较好。     

Exploring the Use of Online Platforms for Climate Change Policy and Public Engagement by NGOs in Latin America

The engagement of environmental non-governmental groups in collaborative communication efforts and decision-making about climate change remains a significant challenge. In Latin America, the website Intercambio Climático was set up to attempt to play a breakthrough role in the region's discussion of climate change. This case study focuses on the development, accomplishments, and challenges of this unique online communication initiative among non-governmental organizations working in climate change issues in Latin America with a US-based partner, as a vehicle to achieve their goals. We used secondary data and in-depth interviews to examine this platform's role in disseminating information and influencing decision-making. The results suggest that generally the participants perceive the website positively, but there are also problematic aspects of the collaboration that are not fully recognized by the members, which prevents a more functional and effective communication strategy.     

消油剂与120#燃料油对马粪海胆(Hemicentrotus pul-cherrimus)抗氧化酶活性的影响

在溢油事故应急处置中,消油剂的使用备受争议。为探究消油剂和溢油对海洋底栖模式生物海胆(Hemicentrotus pulcherrimus)复合毒性效应,通过WAFs(Water-accommodated fractions)和CEWAFs(Chemically enhanced water-accommodated fractions)的96 h暴露实验,测定海胆肠和性腺中过氧化氢酶(CAT)、超氧化物歧化酶(SOD)、谷胱甘肽硫转移酶(GST)、谷胱甘肽过氧化物酶(GPx)活性的变化。实验结果表明:随油水配比浓度的增加,4种酶活性呈现先升高后降低趋势,且酶活性峰值均极显著高于海水对照组水平(P0.01)。肠中4种酶活性最大诱导倍数均高于性腺。相同暴露浓度下,CEWAFs组4种酶活性诱导程度均高于WAFs组。消油剂对照组和海水对照组间4种酶活性则无显著性差异(P0.05)。     

发电厂脱硝用氨引入热力系统防腐的试验研究

针对福建省鸿山热电厂 2 台 600 MW 超临界供热机组热力系统防腐耗氨量大,液氨瓶和液氨输送软管存在泄漏风险的问题,进行试验研究,将脱硝系统的氨气经净化处理后通过永久固定无缝不锈钢管输送至热力系统防腐。应用结果表明:该方法符合国家标准要求,不但完全杜绝了液氨泄漏风险,而且具有明显节约加氨成本和劳工用量的优点,可为热力系统耗氨量较大的电厂解决类似问题提供参考。     

Removal of carbamazepine and clofibric acid from water using double templates–molecularly imprinted polymers

A novel double templates–molecularly imprinted polymer (MIP) was prepared by precipitation polymerization using carbamazepine (CBZ) and clofibric acid (CA) as the double templates molecular and 2-vinylpyridine as functional monomer. The equilibrium data of MIP was well described by the Freundlich isotherm model. Two kinetic models were adopted to describe the experimental data, and the pseudo second-order model well-described adsorption of CBZ and CA on the MIP. Adsorption experimental results showed that the MIP had good selectivity and adsorption capacity for CBZ and CA in the presence of competitive compounds compared with non-imprinted polymer, commercial powdered activated carbon, and C18 adsorbents. The feasibility of removing CBZ and CA from water by the MIP was demonstrated using tap water, lake water, and river water.