Small Watershed River Restoration Method

A technology for river restoration and small watersheds, which is applied in the field of river pollution control, can solve problems such as unsuitable for large-scale promotion and application, poor purification effect, and large labor load, and achieve the effects of improving water quality, good purification effect, and reducing treatment costs

Active Publication Date: 2021-01-29
福建闽泰交通工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned prior art directly puts microbial strains into the river, and the heavy metals and high-concentration organic matter in the river sediment will have a certain inhibitory effect on the microbial strains, resulting in poor purification effect. In order to ensure the purification effect, repeated injections are required. Adding a large number of strains will result in a large amount of labor and high cost, which is not suitable for large-scale promotion and application

Method used

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  • Small Watershed River Restoration Method

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Effect test

Embodiment 1

[0045] A small watershed river restoration method, comprising the following steps:

[0046] S1. Salvage the solid waste deposited in the river, and remove the non-degradable debris in the bottom mud of the river;

[0047] S2, put into the river channel the adsorption microspheres with a particle size of 20cm, after stirring for 2 hours, let stand for 24 hours to remove the adsorption microspheres;

[0048] The adsorption microspheres are composed of citric acid, pullulan and zeolite with a mass ratio of 6:1:12; the added amount of the citric acid is 0.06% of the weight of the river bottom mud;

[0049] S3, throwing modified clay and composite strains in the river;

[0050]The modified clay is composed of calcium nitrate, clay and chitosan with a mass ratio of 1:100:2; the added amount of the modified clay is 0.05% by weight of river water body;

[0051] The composite bacterial species is composed of Bacillus subtilis, yeast, nitrifying bacteria and ammonia oxidizing bacteria...

Embodiment 2

[0054] A small watershed river restoration method, comprising the following steps:

[0055] S1. Salvage the solid waste deposited in the river, and remove the non-degradable debris in the bottom mud of the river;

[0056] S2, throwing into the river channel the adsorption microspheres with a particle size of 15 cm, after stirring for 3 hours, let stand for 36 hours to remove the adsorption microspheres;

[0057] The adsorption microspheres are composed of citric acid, pullulan and zeolite with a mass ratio of 6:1:12; the added amount of the citric acid is 0.02% of the weight of the river bottom mud;

[0058] S3, throwing modified clay and composite strains in the river;

[0059] The modified clay is composed of calcium nitrate, clay and chitosan with a mass ratio of 1:100:2; the added amount of the modified clay is 0.1% by weight of river water body;

[0060] The composite bacterial species is composed of Bacillus subtilis, yeast, nitrifying bacteria and ammonia oxidizing ba...

Embodiment 3

[0063] A small watershed river restoration method, comprising the following steps:

[0064] S1. Salvage the solid waste deposited in the river, and remove the non-degradable debris in the bottom mud of the river;

[0065] S2, throwing into the river channel the adsorption microspheres with a particle size of 18 cm, after stirring for 2.5 hours, let stand for 32 hours to remove the adsorption microspheres;

[0066] The adsorption microspheres are composed of citric acid, pullulan and zeolite with a mass ratio of 6:1:12; the added amount of the citric acid is 0.04% of the weight of the river bottom mud;

[0067] S3, throwing modified clay and composite strains in the river;

[0068] The modified clay is composed of calcium nitrate, clay and chitosan with a mass ratio of 1:100:2; the added amount of the modified clay is 0.08% by weight of the river water body;

[0069] The composite bacterial species is composed of Bacillus subtilis, yeast, nitrifying bacteria and ammonia oxidi...

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Abstract

The invention discloses a method for repairing a river in a small watershed, comprising the following steps: S1, salvaging the solid waste deposited in the river, and removing non-degradable impurities in the bottom mud of the river; S2, putting adsorption microspheres into the river, Stirring, standing still, removing the adsorbed microspheres; S3, throwing modified clay and compound bacteria into the river; S4, planting submerged plants. The small watershed river restoration method of the present invention improves and activates the bottom mud of the river by combining chemical adsorption and microbial purification, and at the same time, by planting submerged plants as pioneer plants, the ecological restoration of small watershed rivers is realized, with low cost , good purification effect and other advantages, suitable for large-scale promotion and application.

Description

technical field [0001] The invention belongs to the technical field of river pollution control, and in particular relates to a small watershed river restoration method. Background technique [0002] In the process of urbanization, due to the impact of human activities, a large number of pollutants enter the water body through atmospheric deposition, wastewater discharge, rainwater erosion, etc., and finally deposit in the bottom mud and gradually enrich. The bottom mud of eutrophic rivers is generally seriously polluted , The pollutants in the sediment are repeatedly mixed with the water body, making it difficult for the water quality to meet the standard. The aggravation of sediment pollution is mainly caused by human factors. In the process of rapid economic development, a large number of refractory and high-concentration pollutants enter the river, and the pollutants accumulate in the river sediment, which will lead to water pollution. Black and stinky, and the key to ri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/32C02F1/28E02B3/02
CPCC02F1/285C02F3/32C02F3/34C02F2103/007E02B3/02Y02A20/402
Inventor 杨志勇连培玲连青俊邱兴辉
Owner 福建闽泰交通工程有限公司
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