Method for phyisochemical enhanced algae removal
A technology for killing algae and algae cells, which is applied in the field of drinking water treatment, and can solve problems such as cell wall structure damage, difficulty in destabilization, and algae outbreaks, and achieves the effects of simple operation, low cost, and simple method
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Embodiment 1
[0018] Eutrophication pollution occurred in the water source of a waterworks, and the concentration of algae cells reached 1.0×10 8 unit / L, the raw water turbidity is 15NTU, and the flocculant used in the water plant is aluminum sulfate. When there is no eutrophication pollution in the water source, the dosage of flocculant is 20mg / L to achieve a good removal effect, and the filtration cycle of the filter is 24 hours. However, after the above-mentioned eutrophication pollution occurred in the water source, the dosage of the flocculant was increased to 30mg / L, and the treatment effect was still unsatisfactory. The efficiency is only 80%, and the filter cycle of the filter is shortened to 12 hours.
[0019] Adopt the method of the present invention to carry out strengthen algae killing to the above-mentioned source water polluted by eutrophication:
[0020] 1) mixing sodium hypochlorite with water to obtain an aqueous solution of sodium hypochlorite; mixing copper sulfate with...
Embodiment 2
[0024] A cyanobacteria bloom broke out in the water source of a water plant, and the concentration of algae cells reached 1.0×10 9 unit / L, the raw water turbidity is 40NTU, and the flocculant used in the water plant is aluminum sulfate. Before the outbreak of water bloom, the flocculant dosage is 20mg / L (calculated as aluminum) to achieve a good removal effect, and the filtration cycle of the filter is 24 hours. However, when water bloom occurs in the water source, the dosage of flocculant is increased to 40mg / L, and the treatment effect is still unsatisfactory. The turbidity of the water after sinking and filtration increases, and the removal rate of algae cells in the sinking water is only 70%. , The filter cycle is shortened to 10 hours.
[0025] Adopt the method of the present invention to carry out strengthen algae killing to the water source that above-mentioned algae bloom takes place:
[0026] 1) Calcium hypochlorite is mixed with water to obtain an aqueous solution ...
Embodiment 3
[0030] Eutrophication pollution occurred in the water source of a water plant, and the concentration of algae cells reached 5.0×10 9 unit / L, the raw water turbidity is 200NTU, and the flocculant used in the water plant is polyaluminum chloride. When eutrophication pollution does not occur, the flocculant dosage is 25mg / L (calculated as aluminum) to achieve a good removal effect, and the filtration cycle is 24 hours. However, after eutrophication pollution occurred, the dosage of flocculant was increased to 50mg / L, and the treatment effect was still unsatisfactory. The turbidity of water after sinking and filtration increased, and the removal rate of algae cells after sinking was only 40%. The filter cycle is shortened to 6 hours.
[0031] Adopt the method of the present invention to carry out strengthen algae killing to the above-mentioned water source polluted by eutrophication:
[0032] 1) Mix sodium hypochlorite with water to obtain an aqueous solution of sodium hypochlor...
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