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.