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Ceramsite matrix for constructed wetland, preparation method and application thereof

A technology of artificial wetland and ceramsite, which is applied in the direction of ceramic products, chemical instruments and methods, applications, etc., can solve the problems of low mechanical strength, poor stability, secondary pollution, etc., and achieve improved firing performance, enhanced mechanical strength, and reduced Dealing with the effects of stress

Pending Publication Date: 2019-09-03
POWERCHINA HUADONG ENG COPORATION LTD
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Problems solved by technology

However, the direct use of raw materials will cause problems such as relatively low adsorption capacity, secondary pollution, poor stability, and low mechanical strength.

Method used

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  • Ceramsite matrix for constructed wetland, preparation method and application thereof
  • Ceramsite matrix for constructed wetland, preparation method and application thereof
  • Ceramsite matrix for constructed wetland, preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In the research on the preparation method of the constructed wetland matrix, the inventors carried out the following test process, so as to determine the optimal control parameters in the matrix preparation method.

[0033] (1) Raw material selection

[0034] Bentonite itself has good adsorption capacity for pollutants, and can be used to remove toxins from petroleum, purify gasoline and kerosene, and treat wastewater. The main functional mineral component is montmorillonite, with a high-grade content of 85-90%. It has a good adsorption capacity for pollutants and can be used to remove toxins from petroleum, purify gasoline and kerosene, and treat wastewater. According to inventor's previous determination, bentonite SiO 2 and Al 2 o 3 If the content reaches the requirement, it can be used as the main material to burn ceramsite. A large number of scientific research and industrial production often use bentonite for the production of ceramsite. However, due to the lo...

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Abstract

The invention provides a ceramsite matrix for constructed wetland and a preparation method thereof. Polluting slag red mud discharged during extraction of alumina in aluminum industry is utilized, andat the same time, the prepared ceramsite matrix can efficiently remove pharmaceutical wastewater and has certain effect of removing nutrient salts. The matrix is prepared from the following raw materials: bentonite, red mud and biomass in a mass ratio of (4-6):1:(0.1-0.9). The invention also provides application of red mud in preparation of ceramsite matrix for constructed wetland.

Description

technical field [0001] The invention belongs to the technical field of water pollution control engineering sewage treatment, and in particular relates to a constructed wetland ceramsite matrix, a preparation method thereof, and an adsorption and removal effect on medical wastewater and nutrient salts. Background technique [0002] Constructed wetland is a new type of high-efficiency ecological sewage treatment technology. It is based on the ecological principles of natural wetlands, artificially constructs subsystems such as substrates, plants and microorganisms, and comprehensively exerts the purification effect of each subsystem to remove pollution in sewage. It is a sewage treatment system that is popularized and applied in practical projects. Compared with the traditional sewage treatment method, it has the advantages of convenient maintenance and management, good treatment effect, low operating cost, conducive to ecological restoration and high environmental aesthetic v...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B38/02C02F3/32
CPCC02F3/32C04B33/132C04B33/1322C04B38/02C04B2235/77Y02P40/60
Inventor 盛晟金熠付杰吕丰锦王彦婷徐玲娥苏展
Owner POWERCHINA HUADONG ENG COPORATION LTD
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