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  • 光催化自然净化法
  • 本站编辑:四川国清源环保科技有限公司发布日期:2019-05-18 13:36 浏览次数:

河流遭受污染,河床被人为的改造,水体失去净化能力,除了消除水体黑臭外,如何恢复水体的生态一直是一个没有解开的世界级难题。

就黑臭水体治理,现有两种生态处理的路径,一种是将污染物变成活性污泥,属于厌氧类的生物处理,即污染物质向下转移。二种是将污染物变成植物的营养物质和水生动物的食物,因为可以打捞,污染物质是向上转移。光催化自然净化法:修复水体成现实

第一种处理要向水体投特种菌种,可以保持一段时间水质,但需要定期反复的投放菌种,来控制水体黑臭的程度,并且还需要定期清理沉淀的活性污泥,这也是目前国内外最流行的治理模式。属于污水处理模式,叫生态处理,但不以恢复水体生态为目的。

第二种处理需要一个关键的条件,就是要让水体环境适合微生物、植物的生长,包括水质、含氧量。这是个结,一旦解开,大自然就会复苏。在光催化技术没有得到应用前,只能通过截污去污后,人工曝气,构建水体植物体系,让水体慢慢恢复自净化功能,但需要付出较大的经济代价和慢长的处理时间,生态体系十分脆弱。

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The river is polluted, the riverbed is artificially transformed, and the water body loses its purification ability. In addition to eliminating the black odor of the water body, how to restore the ecology of the water body has always been a world-class problem that has not been solved.
For the treatment of black and smelly water bodies, there are two ecological treatment pathways, one is to convert pollutants into activated sludge, which belongs to anaerobic biological treatment, that is, the downward transfer of contaminated materials. The two are the nutrients that turn pollutants into plants and the food of aquatic animals, because they can be salvaged and the pollutants are transferred upwards. Photocatalytic natural purification method: repairing water bodies into reality
The first kind of treatment requires the injection of special strains into the water body, which can maintain the water quality for a period of time, but it requires regular and repeated injection of strains to control the degree of black odor in the water body, and it also needs to regularly clean up the precipitated activated sludge. This is also the most popular governance model at home and abroad. It belongs to the sewage treatment model and is called ecological treatment, but it is not aimed at restoring the ecology of water bodies.
The second treatment requires a key condition that the water environment is suitable for the growth of microorganisms and plants, including water quality and oxygen content. This is a knot, once unwound, nature will revive. Before photocatalytic technology was applied, it was only possible to artificially aeration the water body plant system after decontamination, so that the water body slowly restored its self-purification function, but it needed to pay a greater economic cost and slow processing time. The ecosystem is very fragile.

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