KR20070051811A - A deodorant system mixed organic and inorganic media properly - Google Patents

Abstract

The present invention relates to a deodorizing system applying an organic-inorganic composite carrier, the odorous substances generated in a sewage treatment plant, wastewater treatment plant, manure treatment plant and petrochemical related plants as a composite carrier layer in which organic carriers and inorganic carriers are laminated at a predetermined ratio. It is characterized by having high efficiency in removing odor by decomposing and odorizing and discharging to the outside.

The organic-inorganic composite carrier used in the present invention consists of three parts, providing a habitat for microorganisms, providing a carbon source to autotrophic microorganisms that decompose hydrogen sulfide and ammonia, and at the bottom of the composite carrier layer 1 A bark layer 2 formed at a height of%; A compost layer (3) formed on the bark layer (2) and formed at a height of 20% of the entire composite carrier layer (1) and containing nutrients necessary for the growth and growth of microorganisms; It is formed on top of the compost layer (3), is formed with a height of 50% of the entire composite carrier layer (1), a polyurethane foam layer consisting of a porous foam polymer carrier in the form of a cube of 2.5 to 5 cm in size It consists of (4) and has an approximate structure effective for the treatment of gaseous pollutants.

The present invention configured as described above, in the pre-treatment tank to remove the pollutants introduced into the reaction tank by using a humidification system primarily, and then odorless through a composite carrier layer composed of an organic carrier and an inorganic carrier. It has the effect of being discharged into the gas.

In addition, organic carriers composed of bark and compost layers provide habitats for microorganisms and at the same time serve as a source of nutrients. Inorganic carriers composed of polyurethane foams with high specific surface area and porosity are metabolic activities of microorganisms. It is composed of a composite carrier layer that provides a growth space that can maximize the efficiency of the plant, while efficiently treating the incoming odorous substances and increasing the life of the equipment, thereby improving the processing capacity and reducing the processing cost. It has a different effect.

Organic-inorganic composite carrier layer, organic carrier, inorganic carrier, bark layer, compost layer, polyurethane foam layer, biofilter, odorous substance, odor treatment

Description

Deodorant system mixed organic and inorganic media properly}

1 is a schematic diagram of a composite carrier layer applied to the present invention

2 is a plan view of the deodorizing system to which the present invention is applied

Figure 3 is a cross-sectional view of the deodorizing system to which the present invention is applied

Figure 4 is a graph showing the treatment efficiency of volatile organic compounds using the deodorization system to which the present invention is applied

[Description of Symbols for Main Parts of Drawing]

1: composite carrier layer 2: bark layer

3: compost layer 4: polyurethane foam layer

10: base of support 20: reactor

21: pretreatment tank 22: humidification system

23: pretreatment carrier layer 30: heater

31: water supply tank 32: watering system

40: blower

The present invention relates to a deodorizing system, and in more detail, the odorous substances generated in a sewage treatment plant, a wastewater treatment plant, a manure treatment plant, and a petrochemical plant as a composite carrier layer in which organic carriers and inorganic carriers are laminated at a predetermined ratio. The present invention relates to a deodorization system using an organic-inorganic composite carrier which is decomposed and deodorized and then discharged to the outside to have a high efficiency in removing odors.

In general, odor refers to an unpleasant odor that can be sensed by humans, and there are many kinds of source materials of odor generated in the surrounding environment.

Odor is caused by the complex action of various odorous substances, and each source of gaseous pollutants such as odors and volatile organic compounds that occur in sewage treatment plants, sanitary treatment plants, manure treatment plants, and petrochemical plants except for general plants The food waste resource facility, which has been a problem and has been a problem in recent years.

In recent years, the number of complaints caused by these odors is increasing, and the actual facilities are experiencing difficulties in dealing with the surroundings, and the reality is trying to remove the odors from various angles.

Currently, 12 types of odor regulators are designated: ammonia, methyl mercaptan, hydrogen sulfide, methyl sulfide, methyl disulfide, trimethylamine, acetaldehyde, propionaldehyde, butyl aldehyde, normal butyl aldehyde, iso butyl aldehyde and styrene. In addition, the government plans to expand the list to 22 items by 2010. Therefore, efforts to remove odors are urgent.

Such odorous substances are largely classified into physical and chemical odor removal and biological odor removal. The physical odor removal includes washing with water or adsorption with an adsorbent such as activated carbon, zeolite, silica gel, or activated clay. Chemical odor removal methods include mastering and neutralization, and biological methods include biofilter, bioscrubber, and biotrickling filter.

Among them, the most commonly used method is a combination of physical odor removal and chemical odor removal. However, physical and chemical methods require high operating costs, replacement of new materials after a certain period of use, and treatment of acids and alkalis used for washing water or cleaning, which may cause secondary environmental pollution. there was.

Accordingly, the present invention has been invented in view of the above problems. In the pretreatment tank, the contaminants introduced into the reaction tank are first removed from the particulate matter by using a humidification system. It is intended to be discharged as odorless gas through the composite carrier layer configured.

In addition, organic carriers composed of bark and compost layers provide habitats for microorganisms and at the same time serve as a source of nutrients. Inorganic carriers composed of polyurethane foams with high specific surface area and porosity are metabolic activities of microorganisms. It is composed of a composite carrier layer that provides a growth space to maximize the efficiency of the plant, while efficiently processing the incoming odorous substances and increasing the life of the facility, thereby improving the processing capacity and reducing the processing cost. Serves another purpose.

The present invention relates to a deodorizing system applying an organic-inorganic composite carrier, the odorous substances generated in a sewage treatment plant, wastewater treatment plant, manure treatment plant and petrochemical related plants as a composite carrier layer in which organic carriers and inorganic carriers are laminated at a predetermined ratio. It is characterized by having high efficiency in removing odor by decomposing and odorizing and discharging to the outside.

The organic-inorganic composite carrier used in the present invention consists of three parts, providing a habitat for microorganisms, providing a carbon source to autotrophic microorganisms that decompose hydrogen sulfide and ammonia, and at the bottom of the composite carrier layer 1 A bark layer 2 formed at a height of%; A compost layer (3) formed on the bark layer (2) and formed at a height of 20% of the entire composite carrier layer (1) and containing nutrients necessary for the growth and growth of microorganisms; It is formed on top of the compost layer (3), is formed with a height of 50% of the entire composite carrier layer (1), a polyurethane foam layer consisting of a porous foamed polymer carrier in the form of a cube of 2.5 to 5 cm in size It consists of (4) and has an approximate structure effective for the treatment of gaseous pollutants.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic diagram of a composite carrier layer applied to the present invention, Figure 2 is a plan view of the deodorization system to which the present invention is applied, Figure 3 is a cross-sectional view of the deodorization system to which the present invention is applied, Figure 4 is a deodorization to which the present invention is applied A graph showing the treatment efficiency of volatile organic compounds using the system.

First, the bark layer (2) formed at the bottom of the composite carrier layer (1) of the present invention to provide a support for supporting the entire carrier layer itself and a habitat for microorganisms has a length of 2.5 to 5 cm. The bark having a size is formed to have a thickness of 30% of the total composite carrier layer 1.

The bark layer 2 has an average diameter of about 14044 Å and an apparent density of about 0.4063 g / ml. It is configured to provide.

On the other hand, looking at the configuration of the compost layer (3) formed on top of the bark layer (2), it is formed to a thickness of 20% of the entire composite carrier layer (1), nutritional substances required for the normal growth and growth of microorganisms It has a configuration to supply.

Looking at the preferred composition of the compost layer 3, the moisture content is 60 to 70%, the organic content is 32 to 38%, nitrogen is composed of 2%, arsenic 1.95 mg / kg, cadmium 1.16 mg / kg, It is composed of lead 11.03 mg / kg, chromium 10.15 mg / kg, copper 19.87 mg / kg, zinc 118.59 mg / kg and nickel 7.56 mg / kg to satisfy the allowable amount of fertilizer control.

In addition, looking at the configuration of the polyurethane foam layer (4) formed on the top of the compost layer (3), it is formed with a thickness of 50% of the entire composite carrier layer (1), and has the advantages of a large specific surface area and light weight It is chemically stable and has good adhesion to microorganisms.

The polyurethane foam layer (4) is a porous foamed polymer carrier, the size of the particles is composed of a cube shape of about 2.5 to 5 cm, the specific surface area is composed of 50 to 60 m 2 / g.

Looking at the configuration of the deodorizing system to which the present invention configured as described above is applied, the approximate form is composed of a form similar to that of the conventional deodorizing system, by setting the area in which gaseous pollutants are generated, install a collecting device, and collecting A blower 40 is provided to transfer the prepared gas into the reaction vessel 20 installed on the upper portion of the support base 10.

Meanwhile, a pretreatment tank 21 is provided at one side of the reaction tank 20, and a pretreatment carrier layer 23 is provided therein, and a humidification system 22 is provided at an upper portion of the pretreatment tank 21. Is provided.

The humidification system 22 is maintained in an advantageous condition that the activity of the microorganisms are vigorously made, by the pretreatment carrier layer 23, particulate contaminants are removed, and a high concentration of water-soluble substances is partially removed. It is configured to flow into the composite carrier layer (1) under conditions that maintain a relative humidity of 90% or more.

In addition, the outside of the reaction tank 20 is provided with a heater 30 and the water supply tank 31, the watering system installed on the reaction tank 20 of the water maintained at 20 ° C by the heater 30 ( 32) is configured to be sprayed into the composite carrier layer (1).

The heater 30, the water supply tank 31 and the watering system 32 to facilitate the decomposition reaction by the microorganisms, and has a configuration such as to prevent the phenomenon of inhibiting microbial activity by freezing the circulating water. .

Looking at the result of measuring the removal efficiency of the volatile organic compound toluene using the present invention installed as described above with reference to Figure 4 as follows.

The inflow concentration of toluene was 210 ppm, the residence time was 1 minute, and the loading rate was operated at 49 g / m 3 · hr. As shown in FIG. 4, the removal rate was low because the microorganisms in the reactor were not sufficiently activated until the first 60 days of inoculation, but the removal rate reached 100% after 60 days.

After reaching the steady state, the removal efficiency reached 100% at the laboratory temperature of 20 ° C. or higher until 75 days, but the removal rate decreased to 60 to 80% after the 75 days of the laboratory temperature dropped to 20 ° C. or lower. This shows that the microorganisms in the reactor are very sensitive to the temperature, it was confirmed that the insulation and heating equipment to maintain the proper temperature of the reactor is required.

The present invention configured as described above, in the pre-treatment tank to remove the pollutants introduced into the reaction tank by using a humidification system primarily, and then odorless through a composite carrier layer composed of an organic carrier and an inorganic carrier. It has the effect of being discharged into the gas.

In addition, organic carriers composed of bark and compost layers provide habitats for microorganisms and at the same time serve as a source of nutrients. Inorganic carriers composed of polyurethane foams with high specific surface area and porosity are metabolic activities of microorganisms. It is composed of a composite carrier layer that provides a growth space that can maximize the efficiency of the plant, while efficiently treating the incoming odorous substances and increasing the life of the equipment, thereby improving the processing capacity and reducing the processing cost. It has a different effect.

Claims (3)

A reaction vessel 20 having a carrier embedded therein is installed above the support base 10, and a blower 40 is provided outside the reaction vessel 20 to transfer contaminants into the reaction vessel 20, and the reaction vessel 20 is provided. The pretreatment tank 21 provided with the humidification system 22 is installed in the front side of the water spray installed in the upper part of the reaction tank 20 by the heater 30 and the water supply tank 31 formed outside the reaction tank 20. In a deodorization system configured to be sprayed with a carrier through system 32, The inner bottom surface of the reaction vessel 20 provides a habitat for microorganisms, provides a carbon source to autotrophic microorganisms that decompose hydrogen sulfide and ammonia, and forms a bark layer formed at a height of 30% at the bottom of the composite carrier layer 1. (2); A compost layer (3) formed on the bark layer (2) and formed at a height of 20% with respect to the entire composite carrier layer (1) and containing nutrients necessary for the growth and growth of microorganisms; It is formed on top of the compost layer (3), is formed with a height of 50% of the entire composite carrier layer (1), a polyurethane foam layer consisting of a porous foam polymer carrier in the form of a cube of 2.5 to 5 cm in size Deodorization system applying the organic-inorganic composite carrier, characterized in that (4) is sequentially stacked. The method of claim 1, The bark layer 2 has an average diameter of about 14044 kPa and an apparent density of about 0.4063 g / ml, providing a carbon source to autotrophic microorganisms that decompose hydrogen sulfide or ammonia, which is a representative malodorous substance, as well as a habitat for microorganisms. Deodorization system applying the organic-inorganic composite carrier characterized in that. The method of claim 1, Compost layer (3) is a deodorizing system applying the organic-inorganic composite carrier, characterized in that the moisture content is 60 to 70%, the organic content is 32 to 38%, nitrogen consists of 2%.

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