Method for fast repairing submerged vegetation by using water quality improvement clearance
A technology for water quality improvement and submerged vegetation, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve nutrient release, aquatic plant death, and affect aquatic plant photosynthesis, etc. question
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Embodiment 1
[0020] In this embodiment, the chlorophyll-a content of the water body is 0.2mg / L, and the algae concentration converted into: 3×10 9 cells / L, the pH of the water body is 8.2, the algal cell aggregates are relatively large, and they float to the water surface, and the volume of the lake is 1m 3 , the local clean soil is the unsoaked soil on the shore of the lake, which is sieved through a 3mm×3mm sieve for use. The chitosan is food-grade chitosan produced by Jinan Haidebei Biological Company. The dosage of the modified local soil is 43mg / L (3mg / L chitosan, 40mg / L local clean soil), and the algae removal rate reaches 90% after 24 hours. 76NTU decreased to 8NTU, the transparency increased by 80cm, TN decreased from 6.2mg / L to 2.3mg / L, TP decreased from 0.27mg / L to 0.07mg / L, and the oxygen concentration at the water-sediment interface increased by 2mg / L, the water body environment is improved after algae removal, and there is no major change in water quality in 15 days of conti...
Embodiment 4
[0022] In this example, the chlorophyll-a content of the water body is 0.4 mg / L, which is converted into algae concentration: 4.3×10 9 cells / L, the pH of the water body is 8.3, the algal cell aggregates are relatively large, and they float to the water surface, and the volume of the lake is 1m 3 , the local clean soil is the unsoaked soil on the shore of the lake, which is sieved through a 3mm×3mm sieve for use. The chitosan is food-grade chitosan produced by Jinan Haidebei Biological Company. The dosage of the modified local soil is 50mg / L (2mg / L chitosan, 48mg / L local clean soil), and the algae removal rate reaches 90% after 24 hours. The 46NTU of the algae dropped to 9NTU, the transparency increased by 70cm, the TN dropped from the original 10.23mg / L to 4.03mg / L, and the TP dropped from the original 0.28mg / L to 0.08mg / L. During the 30 days of continuous monitoring, there was no major change in water quality, resulting in gaps in water quality improvement (Figure 3). Accor...
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