CN104649415A - Artificial wetland substrate added with microbial carrier fillings - Google Patents

Artificial wetland substrate added with microbial carrier fillings Download PDF

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Publication number
CN104649415A
CN104649415A CN201510051730.9A CN201510051730A CN104649415A CN 104649415 A CN104649415 A CN 104649415A CN 201510051730 A CN201510051730 A CN 201510051730A CN 104649415 A CN104649415 A CN 104649415A
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China
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microbial carrier
matrix
soft
inorganic matrix
artificial wetland
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CN201510051730.9A
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Chinese (zh)
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CN104649415B (en
Inventor
迟文浩
薛欣喜
冯海燕
高原
张明霞
张乐婷
王玮
付龙
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青岛水务集团有限公司科技中心
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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

Add the artificial swamp matrix of microbe carrier stuffing
Technical field
The invention belongs to artificial swamp matrix field, specifically, relate to a kind of novel artificial Wetland Substrate adding microbe carrier stuffing, for artificial wet land reinforced process city domestic sewage.
Background technology
Artificial swamp is a kind of adaptive system, and it can pass through water body, matrix, a series of physics, chemistry and biological approach between waterplant and microorganism, completes the efficient removal to pollutent.Wetland Substrate plays an important role in artificial swamp, traditional artificial swamp matrix is primarily of the composition such as soil, sandstone, in sewage purification process, rely on the specific surface area that matrix is huge, one deck microbial film is formed on its surface, and then stop is carried out to the sewage flowed through retain, by absorption, precipitation, filter and remove water pollutant.
Chinese patent 201410082817.8 discloses a kind of underflow type artificial wet land device of removable combination, its packing layer adopts any one filler combination following: 1. from top to bottom: in packing layer percent depth, natural soil layer, haydite, slag, coarse sand, gravel; 2. from top to bottom: natural soil layer, vermiculite, slag, coarse sand, gravel; 3. from top to bottom: natural soil layer, zeolite, slag, coarse sand, gravel; 4. from top to bottom: natural soil layer, sepiolite, slag, coarse sand, gravel; Chinese patent 200510030330.6 discloses a kind of matrix composition recipe for sewage treating artificial wet land, comprise basic matrix that various water quality all needs and according to the different selectable Basic selective material of water quality, basic matrix is sandy soil compound and rubble, Basic selective material is one or more mixtures in zeolite, Wingdale, cinder, slag, blast furnace slag, rubble, haydite, melon seeds sheet and cobble, the total height of basic matrix and Basic selective material is 0.6m-1.2m, wherein, the height of sandy soil compound is 10.20cm.Its microbial film attachment point is few, weak to sewage treatment capacity.
There is the problem that biofilm speed is slow, work-ing life is short, cost is high in the microbe carrier of current use, simultaneously, because microbial film content is low, its to soluble solid in sewage and the organic absorption of the non-same sex, precipitation and removal ability weak, artificial swamp matrix easily blocks.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art existence, seek to design a kind of microbial film content high, matrix not easily blocks, the artificial swamp matrix of heat-insulating property and good permeability.
To achieve these goals, the technical scheme that the present invention takes is: a kind of artificial swamp matrix of adding microbe carrier stuffing, comprise the soft microbial carrier material of urethane and inorganic matrix, the soft microbial carrier material of described urethane accounts for the 1%-10% of artificial swamp matrix overall weight; Described inorganic matrix comprises in bird's-eye gravel, vermiculite and blast furnace expanded slag two or three, and in described inorganic matrix, the weight ratio of each component is: gravel 1 ~ 4: vermiculite 1 ~ 2: blast furnace expanded slag: 1 ~ 5; The soft microbial carrier material of described urethane is uniformly distributed in described inorganic matrix.
Preferably, the soft microbial carrier material of described urethane is of a size of 10mm*10mm*10mm;
Preferably, the size of described bird's-eye gravel is 1mm-10mm, and the size of vermiculite is 8mm-10mm, and the size of blast furnace expanded slag is 1mm-10mm.
Preferably, in described inorganic matrix, each component layering is laid or mixes rear once-paving.
Preferably, the synthon of the soft microbial carrier material of described urethane is 4,4 '-diphenylmethanediisocyanate (MDI) and polyether glycol.
Preferably, the synthon of the soft microbial carrier material of described urethane is tolylene diisocyanate (TDI), polyether glycol and polyester polyol.
Beneficial effect of the present invention is:
(1) high, the wetting ability of the specific surface area of soft polyurethane ester microbial carrier material and microorganic adhesion is good, physical strength is high, add in artificial swamp matrix, a large amount of attachment site can be provided for sewage disposal microorganism, accelerate biomembranous generation, increase aeration, improve microorganism and denitrogenate dephosphorization capability; Meanwhile, solid support material adds the biomembranous content of its content, improves whole wet land system to soluble solid in sewage and insoluble organic absorption, precipitation and removal ability, reduces the blocking of artificial swamp matrix.
(2) vermiculite is as artificial swamp matrix, its heat insulation effect and good permeability, and suction force is strong, is beneficial to artificial swamp and all keeps stronger sewage treatment capacity in Various Seasonal.
(3) blast furnace expanded slag particle is little, inner containing microvoid structure, smooth surface, is beneficial to the attachment increasing microorganism portion in the substrate, improves matrix treatments organism ability.
(4) bird's-eye gravel wide material sources, with low cost, ventilation property and good water absorption, is beneficial to the aeration oxygen supply of artificial swamp matrix system.Artificial swamp medium production method is easy, is convenient to scale operation and application.
 
Below by specific embodiment, the invention will be further described:
Embodiment 1
The artificial swamp matrix of the interpolation microbe carrier stuffing of the present embodiment, comprises the soft microbial carrier material of urethane and inorganic matrix, and the soft microbial carrier material of urethane accounts for 1% of artificial swamp matrix overall weight; Inorganic matrix comprises bird's-eye gravel, vermiculite and blast furnace expanded slag, and its weight ratio is: gravel 1: vermiculite 2: blast furnace expanded slag: 1; The soft microbial carrier material of urethane is uniformly distributed in inorganic matrix.
The soft microbial carrier material of urethane is of a size of 10mm*10mm*10mm;
The size of bird's-eye gravel is 1mm, and the size of vermiculite is 10mm, and the size of blast furnace expanded slag is 1mm.
In inorganic matrix, each component layering is laid.
Embodiment 2
The artificial swamp matrix of the interpolation microbe carrier stuffing of the present embodiment, comprises the soft microbial carrier material of urethane and inorganic matrix, and the soft microbial carrier material of urethane accounts for 10% of artificial swamp matrix overall weight; Inorganic matrix comprises bird's-eye gravel, vermiculite, and in inorganic matrix, the weight ratio of each component is: gravel 4: vermiculite 1; The soft microbial carrier material of urethane is uniformly distributed in inorganic matrix.
The soft microbial carrier material of urethane is of a size of 10mm*10mm*10mm;
The size of bird's-eye gravel is 10mm, and the size of vermiculite is 8mm.
In inorganic matrix, each component mixes rear once-paving.
Embodiment 3
The artificial swamp matrix of the interpolation microbe carrier stuffing of the present embodiment, comprises the soft microbial carrier material of urethane and inorganic matrix, and the soft microbial carrier material of urethane accounts for 3% of artificial swamp matrix overall weight; Inorganic matrix comprises bird's-eye gravel, vermiculite and blast furnace expanded slag, and in inorganic matrix, the weight ratio of each component is: gravel 4: vermiculite 1: blast furnace expanded slag: 5; The soft microbial carrier material of ammonia ester is uniformly distributed in described inorganic matrix.
The soft microbial carrier material of urethane is of a size of 10mm*10mm*10mm;
The size of bird's-eye gravel is 5mm, and the size of vermiculite is 10mm, and the size of blast furnace expanded slag is 5mm.
In inorganic matrix, each component layering is laid.
Embodiment 4
The artificial swamp matrix of the interpolation microbe carrier stuffing of the present embodiment, comprises the soft microbial carrier material of urethane and inorganic matrix, and the soft microbial carrier material of urethane accounts for 7% of artificial swamp matrix overall weight; Inorganic matrix comprises bird's-eye gravel and blast furnace expanded slag, and in inorganic matrix, the weight ratio of each component is: gravel 4: blast furnace expanded slag: 3; The soft microbial carrier material of urethane is uniformly distributed in described inorganic matrix.
The soft microbial carrier material of urethane is of a size of 10mm*10mm*10mm;
The size of bird's-eye gravel is 7mm, and the size of vermiculite is 8mm, and the size of blast furnace expanded slag is 7mm.
In inorganic matrix, each component layering is laid.
The synthon of the soft microbial carrier material of urethane is 4,4 '-diphenylmethanediisocyanate (MDI) and polyether glycol.
Embodiment 5
The artificial swamp matrix of the interpolation microbe carrier stuffing of the present embodiment, comprises the soft microbial carrier material of urethane and inorganic matrix, and the soft microbial carrier material of urethane accounts for 6% of artificial swamp matrix overall weight; Inorganic matrix comprises bird's-eye gravel, vermiculite and blast furnace expanded slag, and in inorganic matrix, the weight ratio of each component is: gravel 2: vermiculite 2: blast furnace expanded slag: 5; The soft microbial carrier material of urethane is uniformly distributed in described inorganic matrix.
The soft microbial carrier material of urethane is of a size of 10mm*10mm*10mm;
The size of bird's-eye gravel is 6mm, and the size of vermiculite is 8mm, and the size of blast furnace expanded slag is 3mm.
In inorganic matrix, each component layering is laid.
The synthon of the soft microbial carrier material of urethane is tolylene diisocyanate (TDI), polyether glycol and polyester polyol.

Claims (4)

1. add an artificial swamp matrix for microbe carrier stuffing, it is characterized in that: comprise the soft microbial carrier material of urethane and inorganic matrix, the soft microbial carrier material of described urethane accounts for the 1%-10% of artificial swamp matrix overall weight; Described inorganic matrix comprises in bird's-eye gravel, vermiculite and blast furnace expanded slag two or three, and in described inorganic matrix, the weight ratio of each component is: gravel 1 ~ 4: vermiculite 1 ~ 2: blast furnace expanded slag: 1 ~ 5; The soft microbial carrier material of described urethane is uniformly distributed in described inorganic matrix.
2. the artificial swamp matrix of interpolation microbe carrier stuffing according to claim 1, is characterized in that: the soft microbial carrier material of described urethane is of a size of 10mm*10mm*10mm.
3. the artificial swamp matrix of interpolation microbe carrier stuffing according to claim 1, is characterized in that: the size of described bird's-eye gravel is 1mm-10mm, and the size of vermiculite is 8mm-10mm, and the size of blast furnace expanded slag is 1mm-10mm.
4. the artificial swamp matrix of the interpolation microbe carrier stuffing according to any one of claim 1-3, is characterized in that: in described inorganic matrix, each component layering is laid or mixes rear once-paving.
CN201510051730.9A 2015-01-31 2015-01-31 Add the artificial swamp matrix of microbe carrier stuffing CN104649415B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108017154A (en) * 2017-11-16 2018-05-11 广东省农业科学院农业资源与环境研究所 A kind of preparation and its application of the compounded mix biological floating bed applied to combined type triple effect

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10328695A (en) * 1997-06-02 1998-12-15 Nkk Corp Method for removing nitrogen from waste water
CN101863646A (en) * 2010-06-21 2010-10-20 南京工业大学 Filler special for artificial wetland and preparation method thereof
CN103819004A (en) * 2014-03-07 2014-05-28 深圳市万信达生态环境股份有限公司 Movable and combined subsurface constructed wetland device and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10328695A (en) * 1997-06-02 1998-12-15 Nkk Corp Method for removing nitrogen from waste water
CN101863646A (en) * 2010-06-21 2010-10-20 南京工业大学 Filler special for artificial wetland and preparation method thereof
CN103819004A (en) * 2014-03-07 2014-05-28 深圳市万信达生态环境股份有限公司 Movable and combined subsurface constructed wetland device and method

Non-Patent Citations (1)

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Title
宋应民等: ""聚氨酯填料对表面流人工湿地污水处理效果的研究"", 《广东化工》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108017154A (en) * 2017-11-16 2018-05-11 广东省农业科学院农业资源与环境研究所 A kind of preparation and its application of the compounded mix biological floating bed applied to combined type triple effect
CN108017154B (en) * 2017-11-16 2020-03-31 广东省农业科学院农业资源与环境研究所 Preparation and application of composite filler applied to combined three-effect ecological floating bed

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Inventor after: Wei Chengji

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Inventor after: Xue Xinxi

Inventor after: Feng Haiyan

Inventor after: Gao Yuan

Inventor after: Zhang Mingxia

Inventor after: Zhang Leting

Inventor after: Wang Wei

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Inventor after: Chi Wenhao

Inventor after: Xue Xinxi

Inventor after: Feng Haiyan

Inventor after: Gao Yuan

Inventor after: Zhang Mingxia

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Patentee before: SCIENCE AND TECHNOLOGY CENTER, QINGDAO WATER GROUP CO., LTD.