CN112537916B - Spreading type iron-carbon composite filler powder for concrete and preparation method thereof - Google Patents
Spreading type iron-carbon composite filler powder for concrete and preparation method thereof Download PDFInfo
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- CN112537916B CN112537916B CN202011288495.4A CN202011288495A CN112537916B CN 112537916 B CN112537916 B CN 112537916B CN 202011288495 A CN202011288495 A CN 202011288495A CN 112537916 B CN112537916 B CN 112537916B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
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Abstract
The invention discloses a spreading type iron-carbon composite filler powder for concrete, which comprises the following components: 30-40 parts of iron carbon, 30-40 parts of zeolite, 10-20 parts of ceramsite, 10-20 parts of anthracite and 10-20 parts of volcanic rock. The components are sequentially placed into a crusher and a pulverizer for processing, and after being screened by a 1mm sieve, the components are added into a compounding tank and uniformly stirred to prepare the filler powder. The invention has wider application range, and can be applied to concrete areas where sewage passes; the concrete poured by the artificial wetland and other structures can meet the requirements of higher seepage prevention, crack resistance and the like, and also has the capabilities of purifying water quality, removing harmful substances such as nitrogen, phosphorus and the like in sewage and the like, thereby achieving multiple purposes.
Description
Technical Field
The invention belongs to the fields of sewage treatment technology, composite filler and concrete engineering, and particularly relates to application of spread iron-carbon composite filler powder for concrete.
Background
After nitrogen and phosphorus nutritive salts in the sewage enter a relatively closed water area, the water body is very easy to eutrophicate under the irradiation of sunlight. Throughout the world, almost all lakes and other recreational water bodies have varying degrees of eutrophication problems, and most regions are still quite serious. As a novel sewage treatment process, the constructed wetland has the characteristics of simple maintenance, good effect, wide application range and the like, and is a wetland treatment system which is researched and applied internationally at present. The artificial wetland removes pollutants in water through various ways, for example, the fillers remove pollutants in the sewage through physical and chemical actions such as adsorption, absorption, filtration, ion exchange, complex reaction and the like; the wetland plants absorb organic matters in the sewage to maintain the growth of the wetland plants; microorganisms in the soil absorb and degrade pollutants through their own metabolism. Wherein, the adsorption effect of the filler can greatly improve the treatment effect of the wetland.
At present, conventional fillers in the artificial wetland, including gravel, zeolite, volcanic rock, steel slag and the like, are mostly applied to practical engineering, but the fillers generally have small adsorption quantity, weak nitrogen and phosphorus removal capability and easy saturation, and after the fillers are used for a long time, a hardening phenomenon often occurs, so that the nitrogen and phosphorus removal effect is further influenced. Meanwhile, the traditional laying process of the filler wastes time and labor, is complicated in construction and large in occupied area, the waste filler needs to be dug out from the wetland after the filler is saturated in the later period, the fresh filler is replaced again, and the returning of the waste filler is considered, so that a large amount of waste of resources is caused, and the treatment cost is high. Meanwhile, in a water treatment project, a plurality of constructed wetlands, sewage plants, pools of riverways and other structures are all cast by concrete, the requirements on the concrete are that the concrete has higher requirements on seepage prevention, crack resistance and the like, and the cast concrete only has the function. If the poured concrete can meet the requirements of higher seepage prevention, crack resistance and the like, and can purify water quality and remove harmful substances such as nitrogen, phosphorus and the like in sewage at the same time, the generated economic benefit and environmental protection benefit are immeasurable, and the problem is worthy of multi-angle analysis and deep research.
Iron-carbon micro-electrolysis is a sewage treatment process for decomposing pollutants in wastewater by using weak current spontaneously generated by potential difference between iron element and carbon element. When iron and carbon which are in close contact are soaked in a wastewater solution, a weak intra-molecular current can be automatically generated between iron atoms and carbon atoms, sewage is filtered and is subjected to electrolytic treatment, so that the purposes of nitrogen and phosphorus removal are achieved, and meanwhile, the chroma and COD of the wastewater can be greatly reduced aiming at the treatment of the wastewater which is high in organic matter concentration, high in toxicity, high in chroma and difficult to biochemically treat.
Therefore, the invention introduces the iron-carbon material, compounds the iron-carbon material with fillers such as zeolite and the like, and has strong effect of removing nitrogen and phosphorus from sewage, high treatment efficiency and no toxicity. Meanwhile, the invention breaks through the conventional thinking, combines the technical field of sewage treatment with the field of concrete engineering, creatively and uniformly spreads the prepared iron-carbon composite filler powder on the upstream surface of the concrete which is just poured, and the powder is firmly bonded on the surface of the concrete, so the method is simple and convenient to operate, economic and applicable; the process of laying the filler is greatly simplified, no land area is occupied, the application range is wider, and all concrete areas where sewage passes can be applied; the concrete poured by the artificial wetland and other structures can meet the requirements of higher seepage prevention, crack resistance and the like, has the capabilities of purifying water quality, removing harmful substances such as nitrogen, phosphorus and the like in sewage and the like, can achieve multiple purposes, and can not generate appreciable economic benefit and environmental protection benefit.
Disclosure of Invention
Based on the existing filler compound components and construction technology, a preparation method and application of a spreading type iron-carbon composite filler powder for concrete are provided. The invention aims to solve the problems that the filler preparation process is complex and harsh, the filler laying consumes huge manpower, material resources and financial resources, the concrete poured by constructed wetlands and other structures can meet the requirements of higher seepage prevention, crack resistance and the like, and simultaneously has the problems of purifying water quality, removing harmful substances such as nitrogen, phosphorus and the like in sewage and the like.
In order to achieve the above purpose, the technical scope adopted by the invention is as follows: the paved iron-carbon composite filler powder for concrete as well as the preparation method and the application thereof are characterized in that the components of the composite filler powder consist of the following raw materials in parts by weight: 30-40 parts of iron carbon, 30-40 parts of zeolite, 10-20 parts of ceramsite, 10-20 parts of anthracite and 10-20 parts of volcanic rock. 30-40 parts of iron carbon, 30-40 parts of zeolite, 10-20 parts of ceramsite, 10-20 parts of anthracite and 10-20 parts of volcanic rock are crushed in a crusher, then enter a pulverizer, pass through a 1mm sieve, and finally are added into a compounding tank and are stirred uniformly to obtain the filler powder. After the concrete is poured into a mold just after the concrete is poured, the prepared iron-carbon composite filler powder is uniformly scattered on the upstream face of the concrete, and the concrete is cured later, so that the powder is firmly bonded on the surface of the concrete.
The grain diameter of the iron carbon is 3-5cm, and the phenomena of hardening and passivation are avoided.
The particle size of the zeolite is 1-2 cm.
The grain size of the ceramsite is 1-2 cm.
The grain diameter of the anthracite is 1-2 cm.
The particle size of the volcanic rock is 3-5 cm.
The invention has the beneficial effects that:
(1) the composite filler powder provided by the invention is newly introduced with the iron-carbon material, and is compounded with materials such as zeolite, ceramsite, anthracite, volcanic rock and the like, so that the composite filler powder has strong effects of removing nitrogen and phosphorus from sewage, high treatment efficiency and no toxicity;
(2) the method breaks through the conventional thinking, combines the technical field of sewage treatment with the field of concrete engineering, creatively and uniformly spreads the prepared iron-carbon composite filler powder on the upstream surface of the concrete, and the powder is firmly bonded on the surface of the concrete. The process of laying the filler is greatly simplified, and no land area is occupied;
(3) the application range is wide, and the composite filler can be used in all areas where sewage passes and concrete is poured;
(4) the poured concrete can meet the requirements of higher seepage prevention, crack resistance and the like, and also has the functions of purifying water quality and removing harmful substances such as nitrogen, phosphorus and the like in sewage;
(5) the raw materials are simple and easy to obtain, wide in source and low in price; the preparation method is simple and reasonable, can be prepared in conventional equipment, and has mild conditions.
Drawings
Fig. 1 is a schematic diagram of an experimental simulated constructed wetland device.
Detailed Description
The invention will be further elucidated with reference to the following specific examples, which are to be understood as merely illustrative and not limitative of the scope of the invention.
Example 1
A spreading type iron-carbon composite filler powder for concrete comprises the following raw materials in parts by weight: 30 parts of iron carbon, 30 parts of zeolite, 20 parts of ceramsite, 10 parts of anthracite and 10 parts of volcanic rock. Crushing the components in a crusher, then feeding the crushed components into a pulverizer, sieving the crushed components by a 1mm sieve, finally adding the components into a compounding tank, and uniformly stirring to obtain the filler powder. After the concrete is poured into a mold just after the concrete is poured, the prepared iron-carbon composite filler powder is uniformly scattered on the upstream surface of the concrete, the thickness of the iron-carbon composite filler powder is 5mm, and the powder is firmly bonded on the surface of the concrete after the concrete is hardened.
Example 2
A spreading type iron-carbon composite filler powder for concrete comprises the following raw materials in parts by weight: 30 parts of iron carbon, 40 parts of zeolite, 10 parts of ceramsite, 10 parts of anthracite and 10 parts of volcanic rock. Crushing the components in a crusher, then feeding the crushed components into a pulverizer, sieving the crushed components by a 1mm sieve, finally adding the components into a compounding tank, and uniformly stirring to obtain the filler powder. After the concrete is poured into a mold just after the concrete is poured, the prepared iron-carbon composite filler powder is uniformly scattered on the upstream surface of the concrete, the thickness of the iron-carbon composite filler powder is 5mm, and the powder is firmly bonded on the surface of the concrete after the concrete is hardened.
Example 3
A paved iron-carbon composite filler powder for concrete comprises the following raw materials in parts by weight: 32 parts of iron carbon, 30 parts of zeolite, 12 parts of ceramsite, 10 parts of anthracite and 16 parts of volcanic rock. Crushing the components in a crusher, then feeding the crushed components into a pulverizer, sieving the crushed components by a 1mm sieve, finally adding the components into a compounding tank, and uniformly stirring to obtain the filler powder. After the concrete is poured into a mold just after the concrete is poured, the prepared iron-carbon composite filler powder is uniformly scattered on the upstream surface of the concrete, the thickness of the iron-carbon composite filler powder is 5mm, and the powder is firmly bonded on the surface of the concrete after the concrete is subsequently hardened.
Example 4
A paved iron-carbon composite filler powder for concrete comprises the following raw materials in parts by weight: 30 parts of iron carbon, 36 parts of zeolite, 10 parts of ceramsite, 10 parts of anthracite and 14 parts of volcanic rock. Crushing the components in a crusher, then feeding the crushed components into a pulverizer, sieving the crushed components by a 1mm sieve, finally adding the components into a compounding tank, and uniformly stirring to obtain the filler powder. After the concrete is poured into a mold just after the concrete is poured, the prepared iron-carbon composite filler powder is uniformly scattered on the upstream surface of the concrete, the thickness of the iron-carbon composite filler powder is 5mm, and the powder is firmly bonded on the surface of the concrete after the concrete is hardened.
Example 5
A spreading type iron-carbon composite filler powder for concrete comprises the following raw materials in parts by weight: 35 parts of iron carbon, 33 parts of zeolite, 10 parts of ceramsite, 10 parts of anthracite and 12 parts of volcanic rock. Crushing the components in a crusher, then feeding the crushed components into a pulverizer, sieving the crushed components by a 1mm sieve, finally adding the components into a compounding tank, and uniformly stirring to obtain the filler powder. After the concrete is poured into a mold just after the concrete is poured, the prepared iron-carbon composite filler powder is uniformly scattered on the upstream surface of the concrete, the thickness of the iron-carbon composite filler powder is 5mm, and the powder is firmly bonded on the surface of the concrete after the concrete is hardened.
Example 6
A spreading type iron-carbon composite filler powder for concrete comprises the following raw materials in parts by weight: 30 parts of iron carbon, 30 parts of zeolite, 15 parts of ceramsite, 13 parts of anthracite and 12 parts of volcanic rock. Crushing the components in a crusher, then feeding the crushed components into a pulverizer, sieving the crushed components by a 1mm sieve, finally adding the components into a compounding tank, and uniformly stirring to obtain the filler powder. After the concrete is poured into a mold just after the concrete is poured, the prepared iron-carbon composite filler powder is uniformly scattered on the upstream surface of the concrete, the thickness of the iron-carbon composite filler powder is 5mm, and the powder is firmly bonded on the surface of the concrete after the concrete is hardened.
The embodiment is as follows:
1. test method
And measuring ammonia nitrogen in the sewage treated by the composite filler by adopting a nano reagent spectrophotometry method, and measuring total phosphorus in the sewage treated by the composite filler by adopting a molybdenum-antimony anti-spectrophotometry method.
2. Artificial wetland test simulation device
The artificial wetland is simulated by the test, and the device diagram is shown in figure 1.
3. Test procedure
Measuring the ammonia nitrogen concentration in the sewage before treatment to be 30mg/L and the total phosphorus concentration to be 15mg/L, respectively introducing the sewage before treatment into the test devices filled with the above examples and comparative examples, and uniformly scattering filler powder on the concrete pouring surface, wherein the thickness is 5 mm;
respectively calculating the removal rate of ammonia nitrogen and total phosphorus in the sewage after passing through the composite packing layer, wherein the corresponding test results are shown in the following table 1:
TABLE 1 Nitrogen phosphorus removal Rate table
| Test group | Ammonia nitrogen removal (%) | Total phosphorus removal (%) |
| Blank example | 0 | 0 |
| Example 1 | 80 | 85 |
| Example 2 | 90 | 95 |
| Example 3 | 80 | 82 |
| Example 4 | 88 | 90 |
| Example 5 | 85 | 85 |
| Example 6 | 80 | 81 |
As can be seen from the above table, the iron-carbon composite filler for concrete of the present application can simultaneously remove main pollutants in sewage: ammonia nitrogen and total phosphorus, and the ammonia nitrogen removal rate of the embodiment 2 can reach 90%, and the total phosphorus removal rate can reach 95%.
The invention breaks through the conventional thinking, combines the technical field of sewage treatment with the field of concrete engineering, creatively and uniformly spreads the prepared iron-carbon composite filler powder on the upstream surface of the concrete just poured, and the powder is firmly bonded on the surface of the concrete, so the method is simple and convenient to operate, economic and applicable; the process of laying the filler is greatly simplified, no land area is occupied, the application range is wider, and all concrete areas where sewage passes can be applied; the concrete poured by the artificial wetland and other structures can meet the requirements of higher seepage prevention, crack resistance and the like, and also has the capabilities of purifying water quality, removing harmful substances such as nitrogen, phosphorus and the like in sewage and the like, thereby achieving multiple purposes.
Although the present invention has been described by way of examples, the examples are not intended to limit the present invention. Those skilled in the art can make various changes and modifications within the spirit of the invention, such as adjustment of the ratio of ingredients or the time frame, the effect of which is predictable, and thus are also within the scope of the invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the same or equivalent technical features of the claims of the present application.
Claims (4)
1. The application of the spread type iron-carbon composite filler powder for concrete is characterized in that: after concrete is just poured, uniformly scattering the prepared concrete on the upstream surface of the concrete by using the scattering type iron-carbon composite filler powder, and then waiting for the concrete to be hardened, wherein the powder is firmly bonded on the surface of the concrete; the spreading type iron-carbon composite filler powder for concrete is prepared from the following raw materials in parts by weight: 30-40 parts of iron carbon, 30-40 parts of zeolite, 10-20 parts of ceramsite, 10-20 parts of anthracite and 10-20 parts of volcanic rock; the particle size of the zeolite is 1-2 cm; the particle size of the volcanic rock is 3-5 cm;
the preparation method of the spread type iron-carbon composite filler powder for concrete comprises the following steps: crushing the components in a crusher, feeding the crushed components into a pulverizer, sieving the crushed components by a 1mm sieve, adding the components into a compounding tank, and uniformly stirring to obtain the spreading type iron-carbon composite filler powder for the concrete.
2. Use of a sprinkled iron-carbon composite filler powder for concrete according to claim 1, characterized in that: the grain size of the iron carbon is 3-5cm, and hardening and passivation phenomena are avoided.
3. Use of a sprinkled iron-carbon composite filler powder for concrete according to claim 1, characterized in that: the grain size of the ceramsite is 1-2 cm.
4. Use of a sprinkled iron-carbon composite filler powder for concrete according to claim 1, characterized in that: the grain diameter of the anthracite is 1-2 cm.
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| CN202011288495.4A CN112537916B (en) | 2020-11-17 | 2020-11-17 | Spreading type iron-carbon composite filler powder for concrete and preparation method thereof |
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| CN113173720A (en) * | 2021-03-29 | 2021-07-27 | 西安理工大学 | Improved filler for artificial rainwater rapid infiltration facility and preparation method thereof |
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| KR101093557B1 (en) * | 2011-11-02 | 2011-12-13 | 한국지질자원연구원 | Method for treating phosphorus and nitrogen comprised in sewage or wastewater using iron ore wastewater |
| CN104628138A (en) * | 2015-01-21 | 2015-05-20 | 北京林业大学 | Artificial wetland filler capable of efficiently removing nitrogen and phosphorous and preparation method thereof |
| CN109847699A (en) * | 2019-02-15 | 2019-06-07 | 中国环境科学研究院 | A kind of denitrogenation dephosphorizing compounded mix and preparation method |
| CN110589973A (en) * | 2019-08-23 | 2019-12-20 | 杭州肄康新材料有限公司 | Artificial wetland filter material particles and laying construction method thereof |
| CN110627166A (en) * | 2019-09-16 | 2019-12-31 | 浙江工业大学 | Iron-carbon micro-electrolysis filler and preparation method thereof |
| CN110642338A (en) * | 2019-10-30 | 2020-01-03 | 深圳杜尔环境科技有限公司 | Sewage nitrogen and phosphorus removal filler and preparation method thereof |
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