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Preparation of oxygen-releasing composite material for control of black and odorous riverway and application

A composite material and oxygen release technology, which is applied in the treatment of polluted waterways/lakes/ponds/rivers, water/sewage treatment, sustainable biological treatment, etc. , the poor effect of nutrient salts and other problems, to avoid secondary pollution and influence, to release oxygen for a long time, the method is simple and easy to operate

Pending Publication Date: 2018-11-13
南京中科水治理股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of aeration to increase oxygen, the cost of purchasing equipment and the cost of operation is relatively high, and the purpose of effectively removing nutrients in water cannot be achieved, while the traditional oxygen-releasing materials release oxygen faster, and the oxygen-releasing persistence is poor. After the oxygen release reaction, it has a great impact on the pH of the water quality, and it is easy to cause secondary pollution to the water body. At the same time, the effect of absorbing nutrients is not good.

Method used

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  • Preparation of oxygen-releasing composite material for control of black and odorous riverway and application
  • Preparation of oxygen-releasing composite material for control of black and odorous riverway and application
  • Preparation of oxygen-releasing composite material for control of black and odorous riverway and application

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Experimental program
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Effect test

Embodiment 1

[0031] A preparation method for an oxygen-releasing composite material for controlling black and odorous rivers, comprising the following steps:

[0032] (1) Mix sodium peroxide, pozzolan cement, zeolite powder, ceramsite sand, and clay in a mass ratio of 8:5:3:5:3 in a constant temperature box at 25°C to obtain the mixed material 1 for later use ;

[0033] (2) Add sodium benzoate and deionized water to the mixed material 1, and mix it in a constant temperature box at a temperature of 30°C according to the mass ratio of the mixed material 1 to sodium benzoate and deionized water as 10:2:1, and stir to mix After fully reacting for 20 minutes, the internal sphere material (core material) of the oxygen-releasing composite material with a particle size of 10±1mm is obtained by rolling the ball in a granulator;

[0034] (3) Mix pozzolanic cement, zeolite powder, ceramsite sand, and clay in a mass ratio of 10:7:2:1 in a constant temperature box at 25°C to obtain the mixed material ...

Embodiment 2

[0040] A preparation method for an oxygen-releasing composite material for controlling black and odorous rivers, comprising the following steps:

[0041] (1) Mix sodium peroxide, pozzolan cement, zeolite powder, ceramsite sand, and clay in a mass ratio of 8:5:3:5:3 in a constant temperature box at 25°C to obtain the mixed material 1 for later use ;

[0042] (2) Add sodium benzoate and deionized water to the mixed material 1, and mix it in a constant temperature box at a temperature of 30°C according to the mass ratio of the mixed material 1 to sodium benzoate and deionized water as 10:2:1, and stir to mix After fully reacting for 20 minutes, the inner sphere material (core material) of the oxygen-releasing composite material is obtained by rolling the ball in the granulator;

[0043] (3) Mix pozzolanic cement, zeolite powder, ceramsite sand, and clay in a mass ratio of 10:7:2:1 in a constant temperature box at 25°C to obtain the mixed material 2 (shell material) for later use...

Embodiment 3

[0049] A preparation method for an oxygen-releasing composite material for controlling black and odorous rivers, comprising the following steps:

[0050] (1) Mix sodium peroxide, pozzolan cement, zeolite powder, ceramsite sand, and clay in a mass ratio of 10:6:5:2:1 in an incubator at a temperature of 30°C to obtain the mixed material 1 for later use ;

[0051] (2) Add sodium benzoate and deionized water to mixed material 1, and mix in a constant temperature box at a temperature of 35°C according to the mass ratio of mixed material 1 to sodium benzoate and deionized water as 10:1:2, and stir to mix After fully reacting for 15 minutes, the internal sphere material (core material) of the oxygen-releasing composite material with a particle size of 10±1mm is obtained by rolling the ball in a granulator;

[0052] (3) Mix pozzolanic cement, zeolite powder, ceramsite sand, and clay in a mass ratio of 8:5:5:3 in a constant temperature box at a temperature of 30°C to obtain the mixed ...

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Abstract

The invention discloses preparation of an oxygen-releasing composite material for control of black and odorous riverway. The preparation comprises the following steps of uniformly mixing sodium peroxide, pozzolanic cement, zeolite powder, ceramsite sand and clay, so as to obtain a mixed material 1 for further use; adding sodium benzoate and deionized water into the mixed material 1, stirring and mixing, fully reacting for 15 to 20min, and rolling balls in a granulating machine, so as to obtain an internal sphere material with the particle size of 9 to 14mm for the oxygen-releasing composite material; uniformly mixing pozzolanic cement, zeolite powder, ceramsite sand and clay, so as to obtain a mixed material 2 for further use; adding the mixed material 2 into the prepared internal sphere material, and granulating by the granulating machine, so as to obtain the complete oxygen-releasing composite material of which the thickness of an outer shell is not greater than 1.3mm. The preparation has the advantages that the method for preparing the oxygen-releasing composite material is simple, and the operation is easy; the oxygen-releasing duration of the prepared release composite material is long, the improving effect of dissolved oxygen is obvious, the absorbing effect of nutritional salt is good, and the preparation cost is low; the problems of secondary pollution and influence tothe environment are solved in the use process.

Description

technical field [0001] The invention belongs to the technical field of oxygen-increasing materials, and in particular relates to the preparation and application of an oxygen-releasing composite material used for the control of black and odorous rivers. Background technique [0002] The phenomenon of black and odorous river pollution is one of the most prominent water environment problems in my country at present. The dissolved oxygen in the water body is almost zero, and the concentration of nutrients is too high. In order to improve the nutritional status of polluted river water and eliminate black and odorous phenomena, it is necessary to improve the dissolved oxygen in the water, increase the oxygen level of the solution and reduce the concentration of nutrient-rich substances. [0003] At present, the commonly used methods to increase dissolved oxygen in water mainly include aeration to increase oxygen and adding oxygen-releasing materials to increase oxygen. Among them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F7/00C02F1/72
CPCC02F1/727C02F7/00C02F2103/007Y02W10/10
Inventor 徐恩兵柴夏吴梅玲刘平平
Owner 南京中科水治理股份有限公司
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