Precise quantization method for nitrogen cycle of lake ecosystem
An ecosystem and nitrogen cycle technology, applied in biological testing, material inspection products, testing water, etc., can solve the problem of difficulty in accurately simulating the nitrogen cycle process, and achieve the effect of reducing the concentration of nutrient salts
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Embodiment 1
[0054] Small laboratory test, indoor simulation of the nitrogen cycle process between the sediment-water interface, water-air interface, aquatic plants, and nitrogen-removing microorganisms in Meiliang Bay, Taihu Lake. Meiliang Bay is located in the northern part of Taihu Lake, and is the lake area with the worst water quality in Taihu Lake. From 2005 to 2008, the water quality was generally inferior to Class V, and it belongs to the algae-type lake area with serious eutrophication. In-situ collection of Meiliang Bay columnar sediment, overlying water and Elodea.
[0055] The specific experimental steps are as follows:
[0056] (1) Fill the lake sediment from the original position into the bottom of the column from the bottom of the test column according to its original appearance. The thickness of the sediment is 20cm, and adjust it to a suitable height. The collected overlying water was cultivated.
[0057] (2) Select Elodea with a certain amount of biomass and grow vigoro...
Embodiment 2
[0074] Nitrogen cycle research was carried out in Gonghu Bay of Taihu Lake. Gonghu Lake is located in the northeast of Taihu Lake. It used to be one of the areas with better water quality in Taihu Lake. In recent years, with the rapid economic development in the basin and the impact of human activities, nitrogen, phosphorus Nutrient load remains high, water pollution intensifies, and water quality continues to deteriorate. The columnar sediment, overlying water and hornwort algae of Gonghu Lake were collected in situ, and the cycle process of nitrogen in Gonghu Bay of Taihu Lake was simulated indoors at the sediment-water interface, water-air interface, aquatic plants, and nitrogen-removing microorganisms.
[0075] The specific experimental steps are as follows:
[0076] (1) Fill the lake sediment from the original position into the bottom of the column from the bottom of the test column according to its original appearance. The thickness of the sediment is 20cm, and adjust it...
Embodiment 3
[0088] Nitrogen cycle research was carried out in Jinshu Bay of Taihu Lake. The river flows slowly, surrounded by rural domestic sewage discharge, farmland tail water and enterprise sewage discharge, and the water body has relatively high turbidity. In-situ collection of columnar sediment, overlying water, and hydrilla from the river channel was carried out, and the cycle process of nitrogen in the river at the sediment-water interface, water-air interface, aquatic plants, and denitrification microorganisms was simulated indoors.
[0089] The specific experimental steps are as follows:
[0090] (1) Fill the river channel sediment taken from the original position into the bottom of the column from the bottom of the test column according to its original appearance. The thickness of the sediment is 20cm, and adjust it to a suitable height. The collected overlying water was cultivated.
[0091] (2) Select a certain amount of vigorous growth of Hydra verticillium, each submerged p...
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