Constructed wetland matrix with microbial carrier filler

A technology of microbial carrier and constructed wetland, applied in the field of constructed wetland matrix, can solve the problems of easy blockage of constructed wetland matrix, weak sedimentation and removal ability, weak sewage treatment ability, etc., to facilitate large-scale production and application, improve nitrogen removal Good effect of phosphorus capacity, hydrophilicity and microbial adhesion

Active Publication Date: 2016-08-24
青岛水务集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its biofilm has few attachment points and its ability to treat sewage is weak
[0004] The currently used microbial carriers have the problems of slow film formation, short service life, and high cost. At the same time, due to the low biofilm content, they have weak adsorption, precipitation, and removal capabilities for dissolved solids and different organic substances in sewage. Constructed wetlands matrix easy to clog

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The constructed wetland matrix added with microbial carrier fillers in this embodiment includes polyurethane soft microbial carrier materials and inorganic substrates, and the polyurethane soft microbial carrier materials account for 1% of the total weight of the constructed wetland substrates; the inorganic substrates include fine gravel, vermiculite and blast furnace expansion The slag has a weight ratio of: gravel 1: vermiculite 2: blast furnace expansion slag 1; the polyurethane soft microbial carrier material is evenly distributed in the inorganic matrix.

[0020] The size of polyurethane soft microbial carrier material is 10mm*10mm*10mm;

[0021] The size of fine gravel is 1 mm, the size of vermiculite is 10 mm, and the size of blast furnace expanded slag is 1 mm.

[0022] The components in the inorganic matrix are layered.

Embodiment 2

[0024] The constructed wetland matrix added with microbial carrier fillers in this embodiment includes polyurethane soft microbial carrier materials and inorganic substrates, and the polyurethane soft microbial carrier materials account for 10% of the total weight of the constructed wetland substrates; the inorganic substrates include fine gravel, vermiculite, inorganic The weight ratio of each component in the matrix is: gravel 4: vermiculite 1; the polyurethane soft microbial carrier material is uniformly distributed in the inorganic matrix.

[0025] The size of polyurethane soft microbial carrier material is 10mm*10mm*10mm;

[0026] The size of the fine gravel is 10mm and the size of the vermiculite is 8mm.

[0027] The components in the inorganic matrix are mixed evenly and laid at one time.

Embodiment 3

[0029] The constructed wetland matrix added with microbial carrier fillers in this embodiment includes polyurethane soft microbial carrier materials and inorganic substrates, and the polyurethane soft microbial carrier materials account for 3% of the total weight of the constructed wetland substrates; the inorganic substrates include fine gravel, vermiculite and blast furnace expansion Slag, the weight ratio of each component in the inorganic matrix is: gravel 4: vermiculite 1: blast furnace expansion slag 5; the urethane soft microbial carrier material is evenly distributed in the inorganic matrix.

[0030] The size of polyurethane soft microbial carrier material is 10mm*10mm*10mm;

[0031] The size of fine gravel is 5 mm, the size of vermiculite is 10 mm, and the size of blast furnace expanded slag is 5 mm.

[0032] The components in the inorganic matrix are layered.

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PUM

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Abstract

The invention belongs to the field of artificial wetland substrate and relates to a novel artificial wetland substrate added with microbial carrier fillings. The artificial wetland substrate added with microbial carrier fillings comprises polyurethane soft microbial carrier material and inorganic matrix, wherein the polyurethane soft microbial carrier material accounts for 1%-10% the total weight of the artificial wetland substrate; the inorganic matrix comprises two or three of fine gravel, vermiculite and blast furnace slag, and specifically the inorganic matrix comprises the following components in proportion by weight: fine gravel 1-4: vermiculite 1-2: blast furnace slag 1-5; the soft polyurethane microbial carrier material has the advantages of high specific surface area, good hydrophilicity and microbe adherence and high mechanical strength, so that the soft polyurethane microbial carrier materials can provide abundant attachment sites to sewage-treating microbes to accelerate biological membrane generation, increase aeration and improve nitrogen and phosphorus removal capacities of the microbes; the biological membrane content in the substrate is increased, absorption, precipitation and removal abilities of the whole wetland system to soluble solids and insoluble organics are increased and blockage of the artificial wetland substrate is reduced.

Description

technical field [0001] The invention belongs to the field of artificial wetland matrix, in particular relates to a novel artificial wetland matrix added with microbial carrier filler, which is used for the artificial wetland to strengthen the treatment of urban domestic sewage. Background technique [0002] Constructed wetland is an adaptive system that can efficiently remove pollutants through a series of physical, chemical and biological pathways among water bodies, substrates, aquatic plants and microorganisms. The wetland matrix plays an important role in the constructed wetland. The traditional constructed wetland matrix is ​​mainly composed of soil, sand and gravel. The sewage is blocked and intercepted, and the pollutants in the water are removed through adsorption, precipitation and filtration. [0003] Chinese patent 201410082817.8 discloses a movable combined subsurface flow constructed wetland device, the filler layer adopts any of the following filler combinatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/34
Inventor 魏成吉迟文浩薛欣喜冯海燕高原张明霞张乐婷王玮付龙
Owner 青岛水务集团有限公司
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