Functional soil for performing in-situ covering inhibition on phosphorus release of sediments in black and odorous water body and using method of functional soil

A technology for the release of black and odorous water and phosphorus, applied in chemical instruments and methods, water/sludge/sewage treatment, sludge treatment, etc. Mud reducing environment, good adsorption effect, increase the effect of passivation effect

Inactive Publication Date: 2017-12-19
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The covering thickness of inert materials on the bottom mud is the main factor affecting the covering effect, but if the covering thickness of natural materials on the bottom mud surface is too large, it will affect the activities of benthic organisms and destroy the ecological structure

Method used

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  • Functional soil for performing in-situ covering inhibition on phosphorus release of sediments in black and odorous water body and using method of functional soil
  • Functional soil for performing in-situ covering inhibition on phosphorus release of sediments in black and odorous water body and using method of functional soil
  • Functional soil for performing in-situ covering inhibition on phosphorus release of sediments in black and odorous water body and using method of functional soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation method of the functional soil that in-situ covers and inhibits the release of phosphorus from the black and odorous water bottom sediment: Air-dry the laterite and sieve it to obtain particles with a particle size of 2-5mm, and then add potassium permanganate, hydrogen peroxide, calcium nitrate and trichloride respectively Iron. The dosage is respectively, per kg laterite: 8g of KMnO 4 , 28g of 30% H 2 o 2 solution, 18g of Ca(NO 3 ) 2 4H 2 O, 4g of FeCl 3 , stirred for 1 hour and maintained at room temperature for 24 hours to obtain potassium permanganate functional soil, hydrogen peroxide functional soil, calcium nitrate functional soil, and ferric chloride functional soil respectively.

[0034] The inhibitory effect of the in-situ covering functional soil on the release of phosphorus from the bottom sediment of black and odorous water bodies: the experiment was carried out in a bucket, and the temperature and pH were not controlled by humans.

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Embodiment 2

[0040]The preparation method of in-situ covering to inhibit the release of phosphorus from black and odorous water body bottom mud: air-dry and sieve the calcite to obtain particles with a particle size of 2-5mm, and then add potassium permanganate, hydrogen peroxide, calcium nitrate and trichloride respectively Iron. The dosage is respectively, per kg laterite: 5g of KMnO 4 , 24g of 30% H 2 o 2 solution, 28g of Ca(NO 3 ) 2 4H 2 O, 9g of FeCl 3 , stirred for 1 hour and maintained at room temperature for 24 hours to obtain potassium permanganate functional soil, hydrogen peroxide functional soil, calcium nitrate functional soil, and ferric chloride functional soil respectively.

Embodiment 3

[0042] The preparation method of the functional soil that in-situ covers and inhibits the release of phosphorus from the black and odorous water bottom sediment: Air-dry the kaolin and sieve it to obtain particles with a particle size of 2-5mm, and then add potassium permanganate, hydrogen peroxide, calcium nitrate and trichloride respectively Iron. The dosage is respectively, per kg laterite: 14g of KMnO 4 , 35g of 30% H 2 o 2 solution, 23g of Ca(NO 3 ) 2 4H 2 O, 5g of FeCl 3 , stirred for 2 hours and then maintained at room temperature for 36 hours to obtain potassium permanganate functional soil, hydrogen peroxide functional soil, calcium nitrate functional soil and ferric chloride functional soil respectively.

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Abstract

The invention relates to the technical field of environmental protection and in particular relates to functional soil for performing in-situ covering inhibition on phosphorus release of sediments in a black and odorous water body and a using method of the functional soil. The preparation method of the functional soil comprises the following steps: mixing and stirring natural materials and a stabilizer according to a ratio, and curing at room temperature for a period of time, thereby obtaining the functional soil, wherein the stabilizer is one or a mixture of several of potassium permanganate, hydrogen peroxide, calcium nitrate and ferric trichloride. According to the functional soil for performing in-situ covering inhibition on phosphorus release of sediments in the black and odorous water body and the using method of the functional soil provided by the invention, the passivation effect of phosphorus in the sediments can be effectively increased, and in the process of adding the stabilizer into natural red clay, in addition to the achievement of the effects of the natural red clay, the stabilizer achieves the effects of adsorbing and fixing phosphorus in the sediments and improving the sediment reducing environment. Meanwhile, the coverage thickness of the functional soil is decreased, and the influences on activity places of bentonic organisms and ecological structures are alleviated.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a functional soil capable of in-situ covering and inhibiting the release of phosphorus from the bottom mud of black and odorous water bodies and its application method. Background technique [0002] With the rapid economic development and the acceleration of the urbanization process, the water quality of rivers in many cities in our country is very serious. Black moss outbreak phenomenon. The generation of black and odorous water is not only the result of an apparent physical action, but also the result of the comprehensive action of various reaction factors such as biochemistry (Xie Fei et al., 2016). and hydrodynamic conditions and other factors. Nutrients and organic matter input from external sources and released from endogenous sources will consume a large amount of dissolved oxygen during the decomposition process, resulting in water hypoxia (Xu M et al.2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F11/00
Inventor 张雯刘国夏蕾邓智瀚高阳阳谢志豪辜昊
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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