怀柔：保护生态环境 实现可持续发展——访科技部国家可持续发展实验区专家委员会委员赵正中

怀柔区位于北京市东北部,全区总面积2128平方公里,山区面积占全区总面积的88.7%,人口29.6万人,是北京市重要的生态涵养区、饮用水源保护区和北部的生态屏障。怀柔如何紧紧围绕首都饮用水源保护区、首都生态涵养区的区域保护和经济协调发展？怀柔可持续发展实验区的发展历程和取得的成就如何？就这些问题,记者采访了科技部国家可持续发展实验区专家委员会委员赵正中。     

男人出汗不可小觑或是大病

男人出汗是很正常的事,但是如果出汗过多就不好了。出汗过多要怎么防止呢？对于出汗,如果汗多的话,对男性来说都是不好的,尤其是没有运动的情况下。一、男性夜间盗汗这些人常有手脚心热、心烦、面部发红发热、口咽干燥等特点,中医认为是阴虚表现。这类人饮食上可选择百合、雪梨等滋阴之品,少吃羊肉、洋葱、葱、姜、蒜等热性食物,也可用沙参、麦冬、五味子或西洋参等泡水饮用。     

中国的自来水何时才能直接饮用

中国的自来水距离直接饮用还有很长的路要走，这是由方方面面的因素决定的，而总体水质量降低是问题的关键。 我国多数水源地的原水水质污染严重，水中浊度和色度及有机物浓度、重金属含量等指标明显偏高。另一方面，我国绝大多数水厂主要采用的仍然是常规给水处理工艺，对某些特殊有机污染物的去除效果有限，难以适应不断变化的水质要求。     

Reactions Between Humic Acid Solutions and Excessive ClO2 or Cl2

Reactions between humic acid solutions and excessive ClO2 or Cl2 have been investigated. Under various experimental conditions, the removal efficiency of TOC, UV254 and A140 from humic acid solutions were examined. The relationship between the removal efficiency and the consumption of ClO2 or Cl2 was discussed. The results showed that the maximum demand of ClO2 was 2.19 mg/mg TOC for the humic acid solution under the experimental conditions, and that of Cl2 was 1.88 mg/mg TOC. The variation tendency of ClO2 consumption was similar to that of Cl2. TOC of humic acid solutions decreased 15.2% and 15.6% after the reaction with ClO2 or Cl2 respectively. Under the experimental conditions, 21.4% of unsaturated bonds and 52.8% of humic acid color were removed by ClO2 in 168 h. As for Cl2, removal efficiency of unsaturated bonds and humic acid color were 16.8% and 41.7% respectively. Larger molecules from humic acid were oxidized to smaller molecules by ClO2 and Cl2. Higher oxidation potential of ClO2 than that of Cl2 was also indicated by variation of UV254/A410 ratios. The similar tendency, that exhibited faster variation in the initial 24 h, existed for all the research factors.     

野外生存技巧系列之寻找水源

现代人,只要是喜爱远足、旅游、探险、行车,都可能在地球上的任一地点陷入困境:茫茫沙漠、热带雨林、无际大海……本刊特推出野外生存技巧系列,带给广大读者简单、实用的求生技能,让您的野外之行畅通无阻。     

深圳市饮用水库水源保护林建设之必要性探讨

"水环境恢复、水资源保障、水安全保障"是深圳水务工作的三大战略问题,文章针对深圳地区饮用水资源稀缺及主要饮用水源污染问题严重的现状,提出治本清源--以保障水源安全为目的,营造群落结构稳定、生态功能长效、自我更新演替能力强的饮用水源保护林,营造"不老青山",从而实现饮用水源区"绿水常流".同时,文章通过水源保护林和生态风景林间在林种特性、功能效益等方面的差异性对比分析,提出了深圳饮用水源保护林建设的价值和战略意义.     

春天喝什么茶健康

春季,天气乍暖还寒,以饮用香气浓郁的花茶为好,有利散发冬天积在体内的寒邪,促进人体阳气的生发。夏季,气候炎热,适宜饮用绿茶。因绿茶性苦寒,可消暑解热,又能促进口内生津,有利消化。秋季,选用青茶最理想。青茶性味介于绿、红茶之间,不寒不热,既能消除体内余热,又能恢复津液。也可用绿、红茶混合一起饮用。     

弱鸡雏快速复壮法

在雏鸡饲养初期，总会有一些弱鸡雏弃之可惜。下面给养鸡户提供一个弱鸡雏复壮的方法，以减少损失。 1．饮葡萄糖水。对于初生的弱鸡雏，可给予5％的葡萄糖水饮用，1-3天后逐渐转为常规饮水。对于能自饮的弱鸡雏，可让其自饮；对于不能自饮的弱鸡雏，可用注射器滴饮。饮用量要根据弱雏体况而定，不可过量。     

臭氧在饮用水深度处理中的作用

<正>随着工农业的发展,饮用水的安全性问题越来越引起人们的重视。在这种情况下,我国于2006年颁布了新的饮用水标准《生活饮用水卫生标准》(GB5749-2006),同时,对项目的限值有更严格的要求。臭氧技术的研究1886年始于法国,直到20世纪70年代,臭氧在饮用水处理中的主要应用仍是消毒,主要是在法国和其它一些西欧国家。由于臭氧的制备比较昂贵,在我国运用臭氧技术的水厂还为数不多。     

Characterization and adsorption behavior of a novel triolein-embedded activated carbon composite adsorbent

A novel triolein-embedded activated carbon composite adsorbent was developed. Experiments were carried out in areas such as the preparation method, the characterization of physicochemicai properties, and the adsorption behavior of the composite adsorbent in removing dieldrin from aqueous solution. Results suggested that the novel composite adsorbent was composed of the supporting activated carbon and the surrounding triolein-embedded cellulose acetate membrane. The adsorbent was stable in water, for no triolein leakage was detected after soaking the adsorbent for five weeks. The adsorbent had good adsorption capability to dieldrin, which was indicated by a residual dieldrin concentration of 0.204μg·L^-1. The removal efficiency of the composite adsorbent was higher than the traditional activated carbon adsorbent.