Method for controlling quantity of algae in eutrophic shallow lake
A technology for eutrophication and shallow water, applied in chemical instruments and methods, polluted waterways/lakes/ponds/rivers treatment, biological water/sewage treatment, etc.
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Embodiment 1
[0017] Utilize bottom fish crucian carp to control suspended matter concentration method described in the present embodiment, adopt the following steps:
[0018] In the three ponds of the Taihu Lake Ecosystem Research Station of the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, each pond has an area of 100 square meters, a water depth of 1.5 meters, and a sediment depth of 20-25 centimeters. Use crucian carp to control the concentration of suspended solids, and then add zooplankton-eating fish-meal strips. Drain the water before feeding crucian carp to avoid the influence of other fish. The quantity of crucian carp put in is controlled at 50 grams / square meter, 65 grams / square meter and 80 grams / square meter respectively, and the amount of meal sticks is the same, 35 grams / square meter. One month later, the concentration of suspended solids, the number of macrozooplankton and the concentration of chlorophyll a (representing the number of algae) ...
Embodiment 2
[0020] Utilize bottom fish carp to control suspended matter concentration method described in the present embodiment, adopt the following steps:
[0021] In the three ponds of the Taihu Lake Ecosystem Research Station of the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, each pond has an area of 100 square meters, a water depth of 1.5 meters, and a sediment depth of 20-25 centimeters. Carps were used to control the concentration of suspended solids, and then the zooplankton-eating fish - silver carp were added. Drain the water before stocking carp to avoid the influence of other fish. The amount of carp put in is controlled at 50 g / m2, 66 g / m2 and 80 g / m2, and the amount of silver carp put in is the same, 40 g / m2. One month later, the concentration of suspended solids, the number of macrozooplankton and the concentration of chlorophyll a (representing the number of algae) in the water body were measured. Put 50 g / m2 in the carp pond, the concent...
Embodiment 3
[0022] The method for controlling the concentration of suspended solids by using the bottom fish herring described in the present embodiment adopts the following steps:
[0023]In the three ponds of the Taihu Ecosystem Research Station of the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, each pond has an area of 100 square meters, a water depth of 1.5 meters, and a sediment depth of 20-25 centimeters. Black carp was used to control the concentration of suspended solids, and then the zooplankton-eating fish - silver carp was added. Drain the water before stocking herring to avoid the influence of other fish. The amount of black carp put in is controlled at 50 g / m2, 60 g / m2 and 80 g / m2, and the amount of silver carp put in is the same, 38 g / m2. One month later, the concentration of suspended solids, the number of macrozooplankton and the concentration of chlorophyll a (representing the number of algae) in the water body were measured. Put 50 g / m2...
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