A method for domesticating daphnia and a water body ecological restoration method
A technology for ecological restoration and water purification, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as difficult long-term stable survival and serious water flea pollution
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Embodiment 1
[0033] Embodiment of the method for domesticating daphnia
[0034] The method for domesticating daphnia described in this example enables it to survive stably and for a long time in water bodies containing high concentrations of toxic substances. This domestication method specifically comprises the following steps: 1). Collect some water fleas (Cladocera) in the wild, and the stocking density of water fleas in the cultivation pool is 200-500 per liter of water at this moment, and it is placed in a concentration value of 0.116 μg / L deltamethrin breeding and cultivating; at the same time, the concentration value of 1-3 mg / L microcystin-LR is put into the cultivation pond, and the microcystin-LR in the cultivation pond during acclimation The concentration remains within this range. The so-called high concentration is a relative value, which is slightly higher than the concentration of toxic substances in common water bodies in nature but not higher than its 24hLC 50 30% of. A...
Embodiment 2
[0040] Embodiment of the method for domesticating daphnia
[0041] The method for domesticating daphnia described in this example enables it to survive stably and for a long time in water bodies containing high concentrations of toxic substances. Considering that the concentration of toxic substances in water bodies will gradually decay over time, and the half-lives of different toxic substances in water bodies are different, so the domestication time of toxic substances is basically the same as their half-lives.
[0042] The method for domesticating daphnia described in this example enables it to survive stably and for a long time in water bodies containing high concentrations of toxic substances. This domestication method specifically comprises the following steps: 1). Collect some water fleas (Cladocera) in the wild, and the stocking density of water fleas in the cultivation pool is 200-500 per liter of water at this moment, and it is placed in a concentration value of 0.11...
Embodiment 3
[0046] Embodiment of water body ecological restoration method
[0047] 1. A single toxic substance was detected in the water body
[0048] When only a single toxic substance is detected in the water body to be remediated, such as deltamethrin. According to the method for domesticating daphnia described in Example 1, the daphnia obtained after being domesticated by deltamethrin is put into a water body rich in toxic substances and algae, so that it feeds on algae, absorbs and degrades the deltamethrin , thereby purifying the water body. Of course, this situation is applicable to the detection of a single toxic substance in the water body, and the toxic substance is deltamethrin. If other single toxic substances are detected in the water body to be restored, daphnia can also be obtained according to the domestication method of Example 1 to restore the ecology of the water body.
[0049] 2. A variety of toxic substances were detected in the water body
[0050] When two toxic ...
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