|
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：
中文字幕亚洲精品人妻|
国产精品入口中文字幕|
中文字幕99国产精品|
色偷偷av一区二区三区人妖|
亚洲精品成人福利网站|
国产h视频在线观看|
狠狠亚洲婷婷综合色香五月|
中文字幕在线不卡视频|
亚洲AV综合色区无码|
久久综合色之久久综合色|
人妻无码专区一区二区三区|
日韩a一级欧美一级在线播放|
长腿校花无力呻吟娇喘|
国产午夜福利视频第三区|
亚洲色欲久久久久综合网|
玖玖在线精品免费视频|
国产喷水1区2区3区咪咪爱AV|
麻豆久久久9性大片|
定结县|
天天看片天天av免费观看|
精品老熟妇|
日韩av综合中文字幕|
日本三级香港三级三级人妇久
|
青青草五月天在线播放|
久久69国产精品久久69软件|
久久日韩精品一区二区五区|
无遮挡免费高清羞羞视频|
久久这里只有经典29|
久久人人97超碰人人澡爱香蕉
|
翁牛特旗|
国产97公开成人免费视频|
芳草地社区在线视频|
好吊妞av|
精品综合精品产品|
欧美精品一区二区在线观看|
一区二区三区av在线观看|
久久精品国产99久久久古代|
欧美人妻aⅴ中文字幕|
亚洲乱码日产精品一二三|
国产69精品久久久久久久久久久久|
欧美日韩人成综合在线播放|
