www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

chinadaily.com.cn
left corner left corner
China Daily Website

Coal ash consumption offers environmental benefits

Updated: 2012-12-26 17:39
( Xinhua)

TAIYUAN - Recycling coal ash into environmentally-friendly building materials is one way China's largest coal-producing province of Shanxi is trying to cope with the 120 million tons of toxic dump.

Lying in the surroundings of Shentou No 2 Power Plant, in Shuozhou city of the province in northern China, a 1.2 square-km landfill of coal ash has taken shape for three decades.

Annually, three million tons of ash leaks from three power plants in the area.

Coal ash contains toxic heavy metals, including arsenic, cadmium, mercury and lead, which leaks into the water system and is blown into the air on windy days.

Villagers nearby are worried that the pollution may have damaged land and affected the health of livestock and even humans.

"With even the lightest wind, tiny particles take flight, blotting out the sky like a thick sandstorm of ash," said Zhang Weipan, an engineer of Shuozhou Pingshuo opencast coal mine.

Faced with long-lasting pollution, the government of Shuozhou city plans to build a landfill into China's largest coal ash recycling base in an attempt to gradually remove the glacier-like ash dump.

"One source of optimism is that the coal ash leaked by Shuozhou's three power plants contains alumina and silicon that could be used as raw materials for building new products like bricks and ceramics," said Liu Yao, an expert with the Shuozhou branch of Shanxi Coal Transportation Co Ltd.

Close to the site, the Shuozhou municipal government is building an industrial zone with an area of 1,977 acres to recycle five million tons of coal ash annually, with an investment of 12 billion yuan ($1.9 billion).

The zone has attracted nine enterprises since April 2011.

With 16 ongoing projects and 13 products to be launched to market by the end of the year, the total consumption capacity of ash is expected to reach 2.4 million tons, said Li Zhengyin, the city's mayor.

Li said the use of recycled ash will help the industry become a pillar sector of the city, accounting for 5 percent of overall GDP.

Hu Yong, CEO of Shuozhou Runzhen Technology Co Ltd, said he started recycling ash into bricks in 2005.

A square meter of recycled floor manufactured by the company uses 12 kg of coal ash. The company's annual output last year reached 400,000 square meters, which used 1.5 million tons of coal ash, about one seventh of the city's annual ash emission.

However, the path ahead is not smooth.

China's coal production is expected to hit 3.7 billion tons this year, up 3.5 percent from 2011, according to China Coal Industry Association.

The amount of coal ash generated from coal-fired power plants will rise.

While in Shuozhou, a major electricity supplier to Beijing, the installed capacity of power plants will reach 20 million kilowatts by the end of 2015, according to the mayor.

The emissions of coal ash will drastically increase to 18 million tons in 2015, while the processing speed lags far behind.

The utilization of the waste requires much more financial and technological investment, said Wang Jiwei, secretary of China Association of Resource Utilization

The economic benefits might not be as much as the environmental ones, but it will pay off in the long run, added Wang.

 
8.03K
 
...
...
...
主站蜘蛛池模板: 六月丁香婷婷色狠狠久久 | 韩国三级 mp4| 精品国产欧美另类一区 | 精品久久九九 | 成年人视频网站免费 | 亚洲一区二区精品 | 成人中文在线 | 国产4tube在线播放 | 日韩在线一区二区三区免费视频 | 国内精品不卡一区二区三区 | 中国a级黄色片 | 日韩在线视频网址 | 亚洲最大激情中文字幕 | 在线观看精品自拍视频 | 亚欧人成精品免费观看 | 免费人成年短视频在线观看网站 | 久久精品视频一区 | 日韩欧美在线观看一区 | 国产爽的冒白浆的视频高清 | 亚洲日本va | 日本美女福利视频 | 欧美视频www | 国产第一亚洲 | 成人在线毛片 | 风流慈禧一级毛片在线播放 | 免费观看性欧美一级 | 国产一级强片在线观看 | 久草首页在线 | 91久久久久久久 | 国产女主播在线 | 精品自拍视频 | 老司机成人免费精品视频 | 一区二区中文字幕在线观看 | 欧美aaa级 | 六月丁香婷婷色狠狠久久 | 日韩一级影院 | 欧美肥婆videoxxx | 禁止18周岁进入免费网站观看 | 日本成人在线视频网站 | 国产精品自拍第一页 | 成 人 在 线 免费 8888 www |