An ecological matrix material for promoting microbial coating and growth, its preparation method and application
A matrix material and ecological technology, which is applied in chemical instruments and methods, biological sludge treatment, water pollutants, etc. effect and other issues, to achieve significant environmental and economic benefits, easy operation, and the effect of reducing nutrient load
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Embodiment 1
[0044] A natural ecological matrix material for promoting microbial coating and growth for lake sediment restoration, which is made of the following raw materials:
[0045]
[0046] A method for preparing a natural ecological matrix material that promotes microbial coating and growth for lake sediment restoration, the steps of which are:
[0047] 1) After soaking the vermiculite in dilute hydrochloric acid mass fraction 1 or 2 or 3 or 4 or 5% for 2 or 3 hours, wash it with water until neutral (pH is 6.5 or 6.8 or 7 or 7.3 or 7.5), and place Roasting in a high-temperature oven at 300°C or 350°C or 400°C or 450°C or 500°C for 1 or 2 hours to prepare modified vermiculite for use;
[0048] 2) After soaking the medical stone in dilute hydrochloric acid with a mass fraction of 1 or 2 or 3 or 4 or 5% for 1 or 2 hours, wash it with water until neutral (pH is 6.5 or 6.7 or 6.9 or 7.1 or 7.3 or 7.5) , placed in an oven and dried at 60°C or 70°C or 80°C for 2 or 3 or 4 or 5 hours to ...
Embodiment 2-5
[0053] A kind of natural ecological matrix material that promotes microbial coating and growth for lake sediment restoration, it is made of the raw materials of following mass fraction:
[0054]
[0055] Its preparation method is identical with embodiment 1.
[0056] In the specific examples of the above 2-5, it is found through the above ratio that the prepared natural ecological matrix material that promotes microbial coating and growth can significantly increase the dissolved oxygen at the bottom of lakes or rivers, and the growth promoter can increase oxygen and improve the quality of lakes. Substrate micro-ecological environment and the promotion of microbial coating and growth. The microbial abundance increased by more than 290%, the Shannon diversity index of the microbial community on the substrate surface increased by 51%, and the functional genes involved in the carbon, nitrogen, phosphorus cycle and other processes increased by more than 260%.
Embodiment 6
[0058] An application of an ecological matrix material in lake sediment restoration, the steps are:
[0059] 1) Select a certain bottom mud restoration area in West Lake, Hangzhou City, Zhejiang Province to implement the present invention;
[0060] 2) Sprinkle the natural ecological matrix material evenly on the water surface of the lake into the bottom, with a thickness of about 4cm;
[0061] 3) After 2 months of spreading, compared with the control group without the matrix material, the microbial abundance increased by 290%, the microbial diversity increased by 430%, and the functional genes involved in the carbon, nitrogen, phosphorus cycle and other processes increased by 280%, The content of total nitrogen, total phosphorus and organic matter in the surface layer of sediment (0-10cm) decreased by 40%, 39% and 62% respectively. At the same time, the water body in the restoration area has been significantly improved, and the transparency of the water body has increased by ...
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