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Constructed wetland compound substrate containing modified waste bricks and preparation method of constructed wetland compound substrate

A constructed wetland and composite matrix technology, applied in chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc., can solve the problem of shortening the operation period of constructed wetlands, restricting the popularization and application of constructed wetlands, and easy saturation and blockage of substrates. and other problems, to achieve the effect of improving the rhizosphere environment, abundant reserves and increasing dissolved oxygen

Active Publication Date: 2016-08-10
SHENGSHI LANDSCAPE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the choice of matrix is ​​relatively simple, resulting in low removal rate of pollutants, and the matrix is ​​easy to be saturated and clogged, which shortens the operating cycle of constructed wetlands and seriously limits the promotion and application of constructed wetlands in my country.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing a composite matrix of artificial wetland containing modified waste bricks, comprising the following steps:

[0025] (1) Convey waste bricks or blocks with a diameter of no more than 250 mm to the crusher for preliminary crushing by belt conveyor, and then convey the crushed products to the coarse grinding equipment for further crushing through the belt conveyor. After sieving, broken bricks with a particle size of 5-25 mm are obtained;

[0026] (2) Add the broken bricks obtained in step (1) into the NaCl solution, and the NaCl solution completely submerges the broken bricks, soak at 20~25°C for 1 hour, stir for 0.5 hours, then wash 3 times with water, filter, and dry to obtain Na- waste brick matrix; at the same time, take the broken bricks obtained in step (1) and add AlCl 3 solution, and AlCl 3 The solution completely submerged the broken bricks, soaked at 20~25°C for 1 hour, stirred for 0.5 hours, then washed 3 times with water, filtered, and...

Embodiment 2

[0035]A method for preparing a composite matrix of artificial wetland containing modified waste bricks, comprising the following steps:

[0036] (1) Convey waste bricks or blocks with a diameter of no more than 250 mm to the crusher for preliminary crushing by belt conveyor, and then convey the crushed products to the coarse grinding equipment for further crushing through the belt conveyor. After sieving, broken bricks with a particle size of 5-25 mm are obtained;

[0037] (2) Add the broken bricks obtained in step (1) into the NaCl solution, and the NaCl solution completely submerges the broken bricks, soak for 1.5 hours at 20~25°C, stir for 1.5 hours, then wash 3 times with water, filter, and dry to obtain Na- waste brick matrix; at the same time, take the broken bricks obtained in step (1) and add AlCl 3 solution, and AlCl 3 The solution completely submerged the broken bricks, soaked at 20-25°C for 1.5 hours, stirred for 1.5 hours, then washed 3 times with water, filtered...

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Abstract

The invention discloses a method for preparing a constructed wetland compound substrate containing modified waste bricks. The method comprises the following steps: crushing and screening the waste bricks or building blocks, respectively adding the waste bricks or building blocks into a sodium chloride solution or an aluminum chloride solution at room temperature, soaking, stirring, washing, filtering, and drying, so as to obtain a sodium-waste brick substrate and an aluminum-waste brick substrate; immobilizing nitrobacteria on the sodium-waste brick substrate, so as to obtain a biological sodium-waste brick substrate; finally, mixing or laying the biological Na-waste brick substrate, the Na-waste brick substrate, the Al-waste brick substrate and zeolite in a layered manner, so as to obtain the constructed wetland compound substrate containing modified waste bricks. According to the method disclosed by the invention, the waste bricks serve as main raw materials of a denitrification substrate, treatment of wastes with processes of wastes against one another is realized, the waste bricks are crushed and chemically modified, and the nitrobacteria can be immobilized, so that an effect of removing a main pollutant, nitrogen, in sewage by virtue of the waste bricks is enhanced, and nutrient substances and root extension carriers are provided for aquatic plants are provided. Moreover, a complementary synergistic effect exists among various modified waste brick substrates, and the capacity of treating the sewage by constructed wetland is greatly improved.

Description

Technical field [0001] The present invention is a technology field in water treatment materials, which involves a composite wetland composite and preparation method of modified waste bricks. Background technique [0002] As the main part of the artificial wetland, the matrix (also known as filler) is not only the main carrier of microorganisms, but also provides carriers and nutritional support for aquatic plants. It is also the main place for sewage treatment.The effects of sexual adsorption, chelating, and settlement reactions are removed to remove pollution substances.However, the current selection of matrix is ​​relatively single, resulting in a lower removal rate of pollutants, and the matrix is ​​easy to saturated and blocked, shortening the operating cycle of artificial wetlands, and seriously limited the promotion and application of artificial wetland in my country.Exploring and discovering the new type of matrix fillers to achieve the purpose of efficiently removing toxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/32C02F101/16
CPCC02F3/32C02F3/34C02F2101/105C02F2101/16
Inventor 梁丽珍王杰权燕
Owner SHENGSHI LANDSCAPE GRP CO LTD
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