CN101723507B - Three-dimensional concrete filling material for water treatment and preparation method thereof - Google Patents

Three-dimensional concrete filling material for water treatment and preparation method thereof Download PDF

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Publication number
CN101723507B
CN101723507B CN200910213753XA CN200910213753A CN101723507B CN 101723507 B CN101723507 B CN 101723507B CN 200910213753X A CN200910213753X A CN 200910213753XA CN 200910213753 A CN200910213753 A CN 200910213753A CN 101723507 B CN101723507 B CN 101723507B
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China
Prior art keywords
concrete
filling
slurry
water treatment
filler
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CN200910213753XA
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Chinese (zh)
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CN101723507A (en
Inventor
汪晓军
顾晓扬
王开演
简磊
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华南理工大学
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Priority to CN200910213753XA priority Critical patent/CN101723507B/en
Publication of CN101723507A publication Critical patent/CN101723507A/en
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Publication of CN101723507B publication Critical patent/CN101723507B/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses a three-dimensional concrete filling material for water treatment and a preparation method thereof. The method comprises the following steps: firstly, manufacturing a filling material framework by using iron wires of which diameters are 0.2 to 2 millimeters; preparing concrete slurry from cement and water in a weight ratio of 1:1-1:2; then soaking the filling material framework into the concrete slurry for 1 to 2 minutes, then taking the filling material framework out from the slurry, and airing and solidifying the concrete slurry attached to the surfaces of the iron wires; and repeatedly soaking the filling material framework attached with the concrete into the concrete slurry for 1 to 2 minutes, taking the filling material framework out, and airing and solidifying the concrete slurry attached to the surfaces of the iron wires till the coverage thickness of the concrete on the iron wires is 2 to 3 millimeters so as to form the three-dimensional concrete filling material for the water treatment. The obtained filling material can be made into different design shapes with larger void ratio, and the void ratio of the grid reaches 90 percent, so the filling material has better anti-clogging performance.

Description

A kind of three-dimensional concrete filling material for water treatment and preparation method thereof
Technical field
The present invention relates to the water treatment filler, particularly relate to three-dimensional concrete filling material for water treatment and preparation method thereof, the three-dimensional concrete filling material for water treatment of preparation can be widely used in the biochemical processing process process of water and waste water.
Background technology
On the biochemical processing process of waste water, filler obtains application more and more widely.Filler is one of important material of microbial film water treatment system.Be easy to bio-film colonization, particularly the filler of elasticity anaerobe biofilm and the ballistic aerobe biofilm of anti-aeration filler are extremely important; In China, along with the increasing of environment protection dynamics, high quality filler has huge market application foreground.
At present, the filler major part of domestic production is a plastic filler, all exist the shortcoming of surface hydrophilicity difference, because the hydrophobicity of filling surface is difficult in its surface attachment microorganism, particularly anaerobion, because of the biological growing amount of anaerobic biochemical reaction process low, and tack is poor, is difficult to biofilm on present ordinary elasticity filler, causes making the anaerobic biochemical reactor load of flexible filler to be difficult to improve; React for aerobic biochemical, though the biological growing amount of biochemical reaction is higher, the adsorptive power of aerobic microbiological is also strong than anaerobion, but hydrophobicity because of filling surface, also greatly reduce the adsorption strength of microorganism at filling surface, sometimes under the intense impact of aerobic aeration, the microorganism that is adsorbed on filling surface is easy to split away off, thereby has also reduced the biological adsorptive capacity of filling surface.
Some inorganic material surfaces are hydrophilic, so in recent years, utilize inorganic materials to make water treatment filler and are on the increase, as utilize inorganic haydite, and volcanics is made the biologic packing material of BAF.Do the water treatment system of filler with these inorganicss, it is fast to have biofilm speed, the processing efficiency advantages of higher.But use haydite; inorganicss such as volcanics; be difficult to make the voidage height; the mineral filler that performance of anti-blockage is good, so in the anaerobic treatment of waste water, or in the aerobic treatment process of high loading organic waste water; the filler that uses haydite or volcanics etc. to make; often lump easily, or blockage problem, cause the deterioration of the treatment effect of treatment system.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, provide that a kind of to be easy to moulding, voidage height, performance of anti-blockage good, and the preparation method of the water treatment three-dimensional concrete filling material of good hydrophilic property, and the filler by this method preparation is provided.
Making the filler possess hydrophilic property is the key of production high-quality wastewater treatment filler.In the water treatment filler that has used, since haydite, the particle that volcanics is made, the surface is hydrophilic inorganics, so in water treatment procedure, compare with the water treatment filler that uses plastic production, it is fast to have biofilm speed, the processing efficiency advantages of higher.Concrete surface also is the inorganic hydrophilic surface, and can be processed into the big three-dimensional shape of specific surface area by processing request, with the concrete method of iron wire external parcel, wire netting can be made different shape on request, and concrete has anticorrosive in water, surface hydrophilic is difficult for advantages such as obstruction.
The object of the invention is achieved through the following technical solutions:
A kind of preparation method of three-dimensional concrete filling material for water treatment comprises the steps and processing condition:
(1) is the iron wire of 0.2-2mm with diameter, makes the filler framework;
(2) with cement and water by weight 1: 1-1: 2 are made into the concrete slurry;
(3) the filler framework step (1) iron wire made immersed in the concrete slurry of step (2) 1-2 minute, and then the filler framework is taken out from slurry, and is to the concrete slurry airing attached to the iron wire surface, fixed;
(4) will adhere in the concrete slurry that the concrete fill frame immerses step (2) 1-2 minute more, from slurry, take out again, its airing will be solidified;
(5) repeating step (4) repeatedly, the concrete cladding thickness on iron wire is 2-3mm, makes three-dimensional concrete filling material for water treatment.
For further realizing the object of the invention, concrete fill takes out from slurry for the last time in the step (5), when airing solidifies, at concrete surface sprinkling, so that concrete is played maintenance action.
Described filler framework is preferably the square structure of (90-1000mm) * (900-3000mm), vertical, horizontal iron wire or the iron wire staggered back 15mm * 15mm opening that form in reticulated structure angled with the vertical, horizontal frame.
Described cement is preferably 325-600 cement.
Three-dimensional concrete filling material for water treatment by method for preparing.
With respect to prior art, the invention has the beneficial effects as follows:
(1) the present invention at first adopts iron wire to make network, again on the surface of iron wire, wrap up a layer concrete, make the porosity height, specific surface area is big, and the three-dimensional concrete filling material of surface hydrophilic, overcome above-mentioned plastic filler, with haydite, the shortcoming of volcanics filler is a kind of novel water treatment 3-D filler.
(2) from appearance, with the elastic filler surface smoother of common plastics (PP, PE or PVC) making, and relatively coarse with the filling surface of concrete for making of the present invention.In being applied to water and wastewater treatment process, the coarse biofilm of adhering to that will help microorganism on surface at filling surface.And the filler made from inorganic materials commonly used, as haydite, water mountain rock filler is compared, and it can make the shape of different designs, and bigger voidage is arranged, better the anti-clogging plug performance.
(3) elastic filler is put into water and take out from water and to observe, with the elastic filler that common plastics (PP, PE or PVC) is made, the very fast formation globule of its surperficial water comes off from filling surface; And, show extraordinary wetting ability with the filler of concrete for making of the present invention.In addition, the micro-alkalescence of concrete, in the anaerobic treatment process, it can provide certain basicity especially, is more conducive to the anaerobic biological process.
(4) 3-D filler that uses concrete material of the present invention to make can greatly improve biofilm speed and the biofilm intensity of microorganism in the Waste Water Treatment, and the debugging of the wastewater treatment biochemical system of filler easy to use improves the reliability that its operation is handled.
(5) this filler is compared easy biofilm with plastic filler, compares with haydite to be not easy to stop up.
Embodiment
For further understanding the present invention, below in conjunction with embodiment the present invention is made specific description, but the scope of protection of present invention is not limited to the scope of embodiment statement.
Embodiment 1
A kind of preparation method of three-dimensional concrete filling material for water treatment comprises the steps and processing condition:
(1) with the iron wire of 0.2mm, make 90mm * 900mm square structure, mesh size is the filler framework of 15mm * 15mm.Mesh is meant vertical, horizontal iron wire or the iron wire staggered back opening that form in reticulated structure angled with the vertical, horizontal frame, and promptly this opening is the mesh of 15mm * 15mm.
(2) with No. 500 cement, the mass ratio by 1: 1 is made into grout, and stirs.
(3) stuffing frame that iron wire is made immersed in the concrete slurry 1 minute, and then takes out from slurry, treated its concrete slurry airing attached to the iron wire surface, and is fixed.
(4) will adhere to one deck concrete fill frame more and immerse in the concrete slurry 1 minute, and take out from slurry, its airing is solidified, five times so repeatedly, the concrete cladding thickness reaches 3mm.
(5) from slurry, take out the last time, when airing solidifies,, sprayed once in 24 hours at concrete some water of surface spray, so that concrete is played maintenance action, continuously maintenance after 7 days filling intensity can reach 10MPa.The finished product outside surface is coarse, has water-absorbent, carries out the biofilm experiment with flour preparation waste water, and 7 days can the biofilm success.
From in appearance, the gained filling surface is relatively coarse.In being applied to water and wastewater treatment process, the coarse biofilm of adhering to that will help microorganism on surface at filling surface.Elastic filler put into water and take out from water and observe, with the elastic filler that common plastics (PP, PE or PVC) is made, the very fast formation globule of its surperficial water comes off from filling surface; And this routine gained concrete fill is when contacting with water, and water is adsorbed on filling surface, and the contact angle of water and filling surface shows extraordinary wetting ability less than 90 degree.In addition, the micro-alkalescence of concrete, in the anaerobic treatment process, it can provide certain basicity especially, is more conducive to the anaerobic biological process.The 3-D filler that uses concrete material of the present invention to make can greatly improve biofilm speed and the biofilm intensity of microorganism in the Waste Water Treatment, the filler that conventional plastics (PP, PE or PVC) are made, and the anaerobism biofilm needs a wheat harvesting period.After testing, present embodiment gained filler anaerobic biofilm only needs 7 days, and biomembranous coming off the cycle, to handle easy biodegradable food wastewater is example, be about 3 months, be 1.5 times of the carrier biofilm made of conventional plastics (PP, PE or PVC), the debugging of the wastewater treatment biochemical system of filler easy to use improves the reliability that its operation is handled.
Embodiment 2
A kind of preparation method of three-dimensional concrete filling material for water treatment comprises the steps and processing condition:
(1) with the iron wire of 2mm, be made into 1000mm * 3000mm square structure, mesh size is the filler framework of 15mm * 15mm.
(2) with No. 325 cement, the mass ratio by 1: 2 is made into grout, and stirs.
(3) stuffing frame that iron wire is made immersed in the concrete slurry 2 minutes, and then takes out from slurry, treated its concrete slurry airing attached to the iron wire surface, and is fixed.
(4) will adhere to one deck concrete fill frame more and immerse in the concrete slurry 2 minutes, and take out from slurry, its airing is solidified, 2 times so repeatedly, the concrete cladding thickness reaches 2mm.
(5) from slurry, take out the last time, when airing solidifies,, sprayed once in 24 hours at concrete surface sprinkling, so that concrete is played maintenance action, continuously maintenance after 7 days filling intensity can reach 8MPa.The finished product outside surface is coarse, has water-absorbent, carries out the biofilm experiment with flour preparation waste water, and 7 days can the biofilm success.
Embodiment 3
A kind of preparation method of three-dimensional concrete filling material for water treatment comprises the steps and processing condition:
(1) with the iron wire of 1mm, make 90mm * 900mm square structure, mesh size is the filler framework of 15mm * 15mm.
(2) with No. 325 cement, the mass ratio by 1: 2 is made into grout, and stirs.
(3) stuffing frame that iron wire is made immersed in the concrete slurry 1.5 minutes, and then takes out from slurry, treated its concrete slurry airing attached to the iron wire surface, and is fixed.
(4) will adhere to one deck concrete fill frame more and immerse in the concrete slurry 1.5 minutes, and take out from slurry, its airing is solidified, 3 times so repeatedly, the concrete cladding thickness reaches 2.5mm.
(5) from slurry, take out the last time, when airing solidifies,, sprayed once in 24 hours at concrete some water of surface spray, so that concrete is played maintenance action, continuously maintenance after 7 days filling intensity can reach 9MPa.The finished product outside surface is coarse, has water-absorbent, carries out the biofilm experiment with flour preparation waste water, and 7 days can the biofilm success.
With the filler that inorganic materials commonly used is made, as haydite, water mountain rock filler is compared, and the filler of gained of the present invention can be made the shape of different designs, and bigger voidage is arranged, and the hollow rate of grid reaches 90%, and the porosity of haydite or water mountain rock filler only is 50%; Thereby gained filler of the present invention has better anti-clogging plug performance.

Claims (5)

1. the preparation method of a three-dimensional concrete filling material for water treatment is characterized in that comprising the steps and processing condition:
(1) is the iron wire of 0.2-2mm with diameter, makes the filler framework;
(2) with cement and water by weight 1: 1-1: 2 are made into the concrete slurry;
(3) the filler framework step (1) iron wire made immersed in the concrete slurry of step (2) 1-2 minute, and then the filler framework is taken out from slurry, and is to the concrete slurry airing attached to the iron wire surface, fixed;
(4) will adhere in the concrete slurry that the concrete fill frame immerses step (2) 1-2 minute more, from slurry, take out again, its airing will be solidified;
(5) repeating step (4) repeatedly, the concrete cladding thickness on iron wire is 2-3mm, makes three-dimensional concrete filling material for water treatment.
2. the preparation method of three-dimensional concrete filling material for water treatment according to claim 1 is characterized in that: concrete fill takes out from slurry for the last time in the step (5), when airing solidifies, at concrete surface sprinkling, so that concrete is played maintenance action.
3. the preparation method of three-dimensional concrete filling material for water treatment according to claim 1, it is characterized in that: described filler framework is (90-1000mm) * (900-3000mm) square structure, vertical, horizontal iron wire or the iron wire staggered back 15mm * 15mm opening that form in reticulated structure angled with the vertical, horizontal frame.
4. the preparation method of three-dimensional concrete filling material for water treatment according to claim 1, it is characterized in that: described cement is 325-600 cement.
5. the three-dimensional concrete filling material for water treatment of the described method of claim 1 preparation.
CN200910213753XA 2009-12-11 2009-12-11 Three-dimensional concrete filling material for water treatment and preparation method thereof CN101723507B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3172168B2 (en) * 1990-07-31 2001-06-04 株式会社日立製作所 Method for manufacturing semiconductor integrated circuit device
CN1199880C (en) * 2003-08-13 2005-05-04 张涉 Composite stuffing for sewage treating biofilm process
CN100410185C (en) * 2006-09-01 2008-08-13 清华大学 Composite fly ash filling and application thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3172168B2 (en) * 1990-07-31 2001-06-04 株式会社日立製作所 Method for manufacturing semiconductor integrated circuit device
CN1199880C (en) * 2003-08-13 2005-05-04 张涉 Composite stuffing for sewage treating biofilm process
CN100410185C (en) * 2006-09-01 2008-08-13 清华大学 Composite fly ash filling and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
孙娜等.水处理填料的研究进展.《江西化工》.2005,(第4期), *

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Assignee: Guangzhou environmental protection equipment Co., Ltd.

Assignor: South China University of Technology

Contract record no.: 2011440001070

Denomination of invention: Three-dimensional concrete filling material for water treatment and preparation method thereof

Granted publication date: 20110518

License type: Exclusive License

Open date: 20100609

Record date: 20111213

Assignee: Guangzhou environmental protection equipment Co., Ltd.

Assignor: South China University of Technology

Contract record no.: 2011440001070

Denomination of invention: Three-dimensional concrete filling material for water treatment and preparation method thereof

Granted publication date: 20110518

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Record date: 20111213

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Termination date: 20181211