KR101143350B1 - Lk-2 system - Google Patents

Abstract

PURPOSE: A method of forming ecology swamp for growing micro algae and microorganisms is provided to biologically physically treat biological oxygen demand(BOD), chemical oxygen demand(COD), nitrogen(N), and phosphorus(P) based on an artificial swamp layer, water treating contact media, and a filtering layer composed of a sand layer and a gravel layer. CONSTITUTION: A first water collecting well(10) is installed for collecting polluted water from the soundproof wall of a road and non-point pollutants. Carbon dioxide contained in the polluted water is reduced based on the carbon dioxide fixation of micro algae. Ecology swamp(20) is installed for inhabiting the micro algae treating BOD, COD, N, and P. A second water collecting well(30) is installed to collect treated water from the ecology swamp and drains the treated water. The ecology swamp includes a biological membrane filter(201) and a filter layer(202). The biological membrane filter decomposes the organic materials of the polluted water from the first water collecting well based on the action of microorganism carriers(201a). The filter layer eliminates pollutants from the organic material decomposed treated water.

Description

Ecological Wetland Formation Method for Microalgae and Microbial Formation for CO2 and CO2 Reduction Efficiency {LK-2 SYSTEM}

The present invention uses a high-activated carbon material that can absorb carbon dioxide in the exhaust gas generated in vehicles recently, the soundproof wall installed to block the noise generated on the road, carbon dioxide is dissolved in rainwater, soaking into the ground In order to solve the pollution problems such as rivers, the pollution of the surrounding rivers caused by carbon dioxide from landfills, and the pollution of the water caused by pollutants from nonpoint sources, microalgae inhabited areas around the roads with soundproof walls By creating an ecological wetland, it is possible to effectively reduce carbon dioxide contained in contaminated water from roads, landfills, and nonpoint sources, and to effectively treat phosphorus, nitrogen, and organic matters, and to raise the environment of bivalve shells to help spawn fish. Provision, wetland composition of aquatic plants, algae, etc. Carbon dioxide can be utilized as a habitat for helping the formula (CO ₂₎ and relates to microalgae ecology wetlands method capable of microorganism having a boiling point format for pollution reduction efficiency.

Due to the improvement of living standards and the rapid increase of automobiles, the road traffic noise tends to increase, and the road network is spreading to rural and rural areas as well as the suburbs where the noise damage areas are rare.

The most well-known and widely used path countermeasures for road traffic noise are noise barriers. Currently, sound barriers are designed and installed in areas where highway traffic noise reduction is required in consideration of terrain characteristics and future traffic volume. to be.

However, in recent years, the sound barrier is not only used for simple noise isolating, but has also added a function of adsorbing fine dust, CO ₂ , and the like, which is an air pollution source in exhaust gas generated in automobiles. Therefore, a sound barrier is manufactured by using a high active carbon having an adsorption function such as fine dust and CO ₂ on the sound absorbing member of polyester.

Soundproof walls with air pollutant adsorption function can be said to be very positive in terms of reducing air pollution and noise-blocking function, but carbon dioxide melts into the ground due to rainwater and soaks into groundwater and surrounding rivers. It is causing the pollution.

In addition to the above problems, the waterfront greenery composition and composition technology is very poor in Korea, and the management of nonpoint source is not properly performed.

Therefore, there is an urgent need for a water treatment facility that can effectively reduce carbon dioxide generated from soundproof walls and landfills of roads by efficiently managing nonpoint sources by creating waterfront greenery.

Patent Registration 10-0966527 (June 21, 2010) Patent Publication 10-2011-0040414 (April 20, 2011) Patent Registration 10-0944122 (February 18, 2010) Patent Publication 10-2010-0060142 (June 07, 2010) Patent Registration 10-0773810 (October 31, 2007) Patent Registration 10-0796555 (January 15, 2008) Patent Registration 10-0561171 (March 08, 2006)

In order to solve the above problems, the present invention can effectively reduce the carbon dioxide generated from the soundproof walls of the road, and can efficiently manage the non-point source, carbon dioxide (CO ₂ having a habitat for the flora and fauna and natural ecological recovery function) It is an object of the present invention to provide a method for forming an ecological wetland capable of microalgae and microbial habitat for carbon dioxide (CO ₂ ) and non-point pollution abatement efficiency, which enables high algal habitats with high efficiency.

In order to achieve the above object,

The present invention is to be installed in the area around the road where the soundproof wall is installed,

Install the first collection well to collect the soundproof walls of roads, contaminated water generated from nonpoint source,

Microalgae form that reduces the carbon dioxide contained in the contaminated water supplied from the first collection well by the carbon dioxide immobilization action of the microalgae, and processes BOD (biological oxygen demand), COD (chemical oxygen demand), N, P Ecological wetland of your brother,

It is made by installing a second collection well to collect and discharge the treated water treated in the ecological wetland,

The ecological wetland and the fluidized bed biofilm filter for decomposing organic matter by the microbial action of the microbial carrier, the contaminated water supplied from the first collection well;

Before the treated water from which organic matter is decomposed through the biofilm filter is discharged to the second collection basin through the lower side of the eco wetland, adsorption and filtration by the gravel layer formed at the bottom of the biofilm filter and the biofilm inside the sand layer, and the gravel layer The main technical method of forming an ecological wetland capable of microalgae and microbial habitat for carbon dioxide (CO ₂ ) and non-point pollution reduction efficiency including the filter layer formed through the process of removing contaminants by the sedimentation action in the gap formed in the sand and sand layers It is a constitution.

Further, the microalgae is the basis of Nannochloris ocalata, Chaetoceros gracillis, Chlorella elliproidea, Dunaliela salina, Isochrysis galbana, Navicula incerta, Pavlova lutheri, Tetraslemis suecica, water 1L to be greater than or equal to either one or both of one, KNO ₃ 4,000 mg / L, KH ₂ PO ₄ 1,000 mg / L, MgSO ₄ ? 7H ₂ O 2,000 mg / L, FeSO ₄ ? 7H ₂ O 5mg / L, H ₃ BO ₃ 3mg / L, MnSO ₄ ? 7H ₂ O 3 mg / L, ZnSO ₄ ? 7H ₂ O 0.5 mg / L, CuSO ₄ ? 5H ₂ O 0.1mg / L, Na ₂ MoO _{4 It is} cultured using a medium having a composition of 0.2mg / L, characterized in that the culture in the photobioreactor.

Ecological wetland composition device according to the present invention can effectively reduce the CO ₂ generated from the soundproof wall of the road by the carbon dioxide immobilization action of the microalgae, artificial wetland layer, water treatment contact media (DS-BB) and sand layer, gravel layer BOD, COD, N, P and the like by the filtration layer made of it has the advantage that it is possible to efficiently biologically and physically.

1 is a cross-sectional view showing an ecological wetland formation apparatus according to the method for forming an ecological wetland of the present invention.
Figure 2 is a view showing a batch cultivation (batch cultivation) apparatus of the microalgae according to the present invention.

It will be described in detail with respect to the technical configuration according to the ecological wetland composition method of the present invention.

As shown in FIG. 1, the ecological wetland growth value according to the ecological wetland formation method of the present invention is provided with a first collection well 10 for collecting polluted water generated from a soundproof wall of a road and a nonpoint source.

The carbon dioxide contained in the contaminated water supplied from the first collection well 10 is reduced by the carbon dioxide immobilization action of the microalgae, and the BOD (biological oxygen demand), COD (chemical oxygen demand), N, and P are treated. Ecological wetland (20) of microalgal habitat type,

As it is formed through the process of installing a second collection well 30 to collect and discharge the treated water treated in the ecological wetland 20,

The ecological wetland 20 is a fluidized bed biofilm filter 201 for decomposing organic matter by the microbial action of the microbial carrier 201a from the contaminated water supplied from the first collection well 10;

Before the treated water from which organic matter is decomposed through the biofilm filter 201 is discharged to the second collection well 30 through the lower side of the eco wetland 20, the gravel layer 202a formed in a layered manner at the bottom of the biofilm filter 201. ) And the filtration layer 202 formed through the adsorption-filtration by the biofilm inside the sand layer 202b and the removal of contaminants by the sedimentation action in the gap formed in the gravel layer 202a and the sand layer 202b. Is done.

Hereinafter, each component constituting the ecological wetland constructing device will be described in detail.

The first collection modification (10)

Since the amount of the contaminated water generated from the soundproof walls of the road and the nonpoint source is varied according to the rainfall, the first collection well 10 has an ecological wetland 20 having a function of reducing carbon dioxide, nitrogen, phosphorus, and organic matter to compensate for this. Install at the front end of

The vortex screen 101 is installed in the first collecting well 10 to treat foreign matter contained in rainwater that is initially introduced.

The vortex screen 101 is a treatment mechanism using gravity sedimentation, a screen, and a filter using a passive vortex vortex, gross pollutants, sediment, oil & grease, suspended matter ( SS) and the like are removed.

As such, the contaminated water passing through the vortex screen 101 is transferred to the ecological wetland 20 at the rear end by using a pump.

Eco Wetland (20)

The contaminated water supplied from the first collection well 10 is contaminated water having a high concentration of carbon dioxide introduced from the soundproof wall, and undergoes a carbon dioxide reduction process by immobilization of carbon dioxide due to photosynthesis of microalgae, and in addition to the contact media for water treatment. Biological treatment and physical treatment by the filtration layer is subjected to organic matter treatment, which is nitrogen?

Microorganisms that can utilize light energy include eukaryotic microalgae, prokaryotic cyanobacteria, and photosynthetic bacteria. In particular, microalgae are simple in structure and have photosynthetic action, and some species inhabit soil or rock surfaces, but are typical aquatic microorganisms.

The immobilization of carbon dioxide by the microalgae is to restore the balance of the carbon cycle that is naturally occurring in the ecosystem. The principle is photosynthesis where photosynthetic microorganisms reduce carbon dioxide using light energy and water to produce organic substances. . The overall redox reaction of photosynthesis is shown in the following equation (1.1), where H ₂ O gives electrons (hydrogen) to reduce CO ₂ to carbohydrates (CH ₂ O).

H ₂ O + CO ₂ -------------------------> O ₂ + [CH ₂ O]

The microalgae inhabiting the ecological wetland 20 include any one or two or more selected from Chlorella sp., Nannochloris ocalata, Chaetoceros gracillis, Dunaliela salina, Isochrysis galbana, Navicula incerta, Pavlova lutheri, and Tetraslemis suecica.

Specific examples of pH and temperature, factors affecting carbon dioxide immobilization of microalgae, are based on Chlorella sp., A freshwater algae that is resistant to carbon dioxide concentration and strong to microbial contamination. same.

The pH is closely related to the form of carbon dioxide. If the pH is not controlled, the pH value increases as the strain grows. In the case of Chlorella sp., The optimum pH for enhancing the carbon dioxide utilization efficiency through photosynthesis is 6.6.

The temperature is closely related to the biological activity of algae, and most of the freshwater algae do not grow above 25-30 ° C. However, some cyanobacteria (Bule green glgae, Cyanobacteria), the optimum growth temperature is 35 ~ 40 ℃, some thermophilic Chlorella can grow up to 42 ℃. In addition, in the case of Chlorella pyrenoidsosa, the optimum temperature varies depending on the action of the cells, 38 ~ 39 ℃ for growth, 40 ~ 42 ℃ for photosynthetic action, 40 ~ 42 ℃ for respiration.

In the initial formation of the eco wetland 20, the microalgae are cultured and then inhabited in the ecological wetland 20 to fix carbon dioxide contained in contaminated water by photosynthesis.

Cultivation of the microalgae is performed by batch cultivation, and as shown in FIG. 2, the microalgae is connected to a water jacket 51, which is a flow path of water in the photobioreactor 50. Incubate for 8 days by supplying 10% carbon dioxide-containing air while maintaining 30 ℃.

The microalgae are based on 1 L of water, KNO ₃ 4,000 mg / L, KH ₂ PO ₄ 1,000 mg / L, MgSO ₄ ? 7H ₂ O 2,000 mg / L, FeSO ₄ ? 7H ₂ O 5mg / L, H ₃ BO ₃ 3mg / L, MnSO ₄ ? 7H ₂ O 3 mg / L, ZnSO ₄ ? 7H ₂ O 0.5 mg / L, CuSO ₄ ? As cultured using a medium having a composition of 0.1 mg / L of 5H ₂ O and 0.2 mg / L of Na ₂ MoO ₄ , the culture is performed in the photobioreactor 50.

The photobioreactor 50 is an internally irradiated tubular reactor, using a total volume of 4L. In order to control the internal temperature of the photobioreactor 50, the water jacket 51 is attached to the outside of the photobioreactor 50, and the diffuser 52 is installed below the photobioreactor 50. It is sprayed evenly by small bubbles.

The light source is installed outside the round fluorescent lamp to be directly irradiated to the photobioreactor 50, the gas flowing into the photobioreactor 50 is 100% carbon dioxide and air tank 61 from the carbon dioxide tank 60 In the air coming from the) to make a 10% concentration by using a gas mixer 70 in a volume ratio of 1: 9.

The biofilm filter 201 is filled with a microbial carrier 201a therein, and undergoes decomposition of organic matter by microorganisms attached to the surface of the carrier.

The microbial carrier 201a is configured by filling a polyethylene carrier prepared by melting polyethylene treated as a waste synthetic resin. The polyethylene carrier is one of a cylindrical cylinder, and may be modified in various forms as necessary.

The polyethylene carrier is prepared by discharging a polymer formed by heating and melting a polyethylene resin at 120 to 150 ° C. with an electric heater through an extruder and then cooling. In addition, the polyethylene carrier has fine wrinkles formed on its surface to facilitate the attachment and propagation of microorganisms.

The filtration layer 202 has a sand layer 202b formed from the ground, and a gravel layer 202a is formed on the sand layer 202b.

The lamination thickness of the sand layer 202b is 25 to 35 cm, and the lamination thickness of the gravel layer 202a is also 25 to 35 cm.

The filtration layer 202 is formed with a gravel layer and a sand layer, the adsorption and filtration by the biofilm inside the gravel layer and the sand layer is generated, and also go through the process of removing contaminants by the precipitation action in the gap between the gravel layer and the sand layer. .

As described above, the ecological wetland growth value capable of microalgae habitat with high CO2 (CO ₂ ) and nonpoint pollution reduction efficiency according to the present invention can effectively reduce the CO ₂ generated from the soundproof walls of the road. By installing the device according to the present invention where the soundproof wall is installed, water pollution can be prevented in advance, and thus the industrial applicability is large.

10: first modification
20: Eco Wetland
30: second modification
201a: microbial carrier
201: Biofilm Filter
202a: gravel layer
202b: sand layer
202: filter layer

Claims (3)

It is installed in the area around the road where the soundproof wall is installed,
Install a first collection well (10) for collecting the soundproof walls of roads, contaminated water generated from nonpoint source;
The carbon dioxide contained in the contaminated water supplied from the first collection well 10 is reduced by the carbon dioxide immobilization action of the microalgae, and the BOD (biological oxygen demand), COD (chemical oxygen demand), N, and P are treated. Ecological wetland (20) of microalgal habitat type,
It is made by installing a second collecting well 30 to collect and discharge the treated water treated in the ecological wetland 20,
The ecological wetland 20,
A fluidized bed biofilm filter 201 for decomposing organic matter by the microbial action of the microbial carrier 201a and the contaminated water supplied from the first collecting well 10,
Before the treated water from which the organic matter is decomposed through the biofilm filter 201 is discharged to the second collection well 30 through the lower side of the eco wetland 20, the gravel layer 202a formed in a layer form at the bottom of the biofilm filter 201. ) And the filtration layer 202 formed through the adsorption-filtration by the biofilm inside the sand layer 202b and the removal of contaminants by the sedimentation action in the gap formed in the gravel layer 202a and the sand layer 202b. Ecological wetland formation method capable of microalgae, microbial habitat for carbon dioxide (CO ₂ ) and non-point pollution reduction efficiency, characterized in that consisting of.
The method according to claim 1,
Microalgae is a chlorella sp. Characterized by the formation of microalgae, microbial habitat for the efficiency of carbon dioxide (CO ₂ ) and non-point pollution reduction.
The method according to claim 1,
The microalgae are based on 1 L of water, KNO ₃ 4,000 mg / L, KH ₂ PO ₄ 1,000 mg / L, MgSO ₄ ? 7H ₂ O 2,000 mg / L, FeSO ₄ ? 7H ₂ O 5mg / L, H ₃ BO ₃ 3mg / L, MnSO ₄ ? 7H ₂ O 3 mg / L, ZnSO ₄ ? 7H ₂ O 0.5 mg / L, CuSO ₄ ? Carbon dioxide (CO ₂ ) and non-point pollution reduction, which is incubated using a medium having a composition of 5H ₂ O 0.1mg / L, Na ₂ MoO ₄ 0.2mg / L, and is cultured in the photobioreactor 50. Ecological wetland formation method capable of microalgae, microbial habitat for efficiency.

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