|
Treatment technology for South African mine water
1/16/2015 |
|
|
Approx. 48 billion euros needed to improve water and waste-water treatment
Mines are a source of heavily polluted waste water
Flagship projects to produce drinking water quality
Water and in particular waste water are environmental themes of great importance in mining in South Africa. These vital aspects are being addressed by IFAT Environmental Technology Forum Africa, the premiere of which takes place from September 15 to 18, 2015 at the Johannesburg Expo Centre. This new sector platform brings together suppliers and users of innovative solutions and technologies for water, waste water, refuse and recycling, it is being held in a market that presents great opportunities.
High level of investment in water and waste water 670 billion Rand - around 48 billion euros - is what South Africa must invest in the next ten years in order to modernize its water and waste-water infrastructure, according to Nomvula Mokonyane, Minister of Water Affairs and Sanitation. As well as renovating the dilapidated pipe systems and building more municipal treatment plants, the country is also faced with the challenge of dealing with the heavily polluted water draining from its mines.
AMD: A poisonous cocktail seeping from disused mines Acid mine drainage, or AMD, is the main contributor of this problem. Highly acid waste water containing high levels of heavy metals is produced when water floods into disused shafts, in particular in gold mines. This poisonous cocktail can also seep from spoil heaps. If nothing is done, then AMD can severely pollute both surface and ground water. The failings of the past, such as a lack of legislation to enforce the cleaning up of mines, have led to the poisonous waste water from these mines becoming an ever more urgent environmental problem for South Africa.
Wide range of treatment technologies A range of treatment solutions for tackling these problems is supplied by international environmental technology companies. The options include, for example, ventilation, precipitation and ion-exchange processes, components for membrane and nano filtration, reverse-osmosis plants and solutions for biological sulfate removal. Added to this is the accompanying equipment of pumps, pipes and measuring devices. Just which solution is the most appropriate depends on the composition of the waste water in question, and this varies widely between the different mining regions.
Drinking water from mine water?
In the past in South Africa treatment of waste water from mines generally concentrated on neutralizing low pH values and removing metals. However this still leaves the salts in the water, and according to a South African commission of experts it is important in the medium to long term to also deal with these constituents. By doing this, it would be possible to provide a "side effect" to help alleviate the water shortage in the country: A few flagship projects are already in operation that produce drinking water quality from active coal mines, through desalination systems, and this water is then fed into the municipal networks.
According to information from the economic development agency Germany Trade & Invest (GTAI), plans are under way to use large modern desalination plants to produce drinking water from AMD in areas including Johannesburg.
The disused mine shafts could then be re-purposed to serve as an underground water reservoir that could cover an estimated five percent of the overall water demand in the region.
These are topics that present great potential for business for the both the exhibitors and participants in IFAT Environmental Technology Forum Africa. |
|
Related Exhibition:
|
|
|
|
|
主站蜘蛛池模板：
无遮挡高潮国产免费观看|
无码中文字幕免费一区二区三区|
日韩精品一区二区三区人|
aaaa国产|
av无码中文字幕不卡一区二区三区|
欧美人与动牲交A免费观看|
xx性欧美肥妇精品久久久久久|
老司机福利在线视频|
亚洲精品日本久久久中文字幕|
日产一区日产2区|
亚洲男人第一无码av网站|
国产亚洲人成网站在线观看|
欧美freesex精品|
青春草在线播放在线观看视频|
亚洲最新无码中文字幕久久|
亚洲小视频|
精品久久久中文字幕人妻|
国产乱子精品一区二区在线观看|
她也色tayese在线视频|
日本黄页网站免费大全|
日韩精品永久免费视频|
日韩AV高清在线看片|
极品人妻videosss人妻|
亚洲精品网站在线观看你懂的|
狠狠躁夜夜躁人人爽天天5|
成人A级片|
成人网页在线观看|
日韩视频中文字幕精品偷拍|
人妻影音先锋啪啪av资源|
av大片在线无码免费|
性欧美三级在线观看|
一区二区三区在线色视频|
免费观看的A级毛片的网站|
久久久亚洲精品一区二区三区|
亚洲韩欧美第25集完整版|
亚洲欧美日韩高清一区二区三区|
亚洲无码成人小说|
成码无人AV片在线电影网站|
国产h视频在线观看|
成人国产网站|
国产av普通话对白国语|
