KR101485293B1 - An Apparatus and Method of Manufacturing Sulfur Impregnated Biochar for wastewater processing - Google Patents

Abstract

A manufacturing apparatus of sulfur impregnated biochar for wastewater treatment according to the present invention comprises a chamber unit for accommodating biomass therein; a heater unit for applying heat into the chamber unit; a water supply unit for supplying water into the chamber; a sulfur supply unit for supplying sulfur into the chamber unit; and a control unit for controlling the operation of the heater unit, the water supply unit and the sulfur supply unit so as to pyrolyze the biomass to biochar by applying heat to the chamber unit, increase the specific surface area of the pyrolyzed biochar by supplying water to the chamber unit, and impregnate sulfur on the surface of the biochar with the specific surface area increased by supplying sulfur to the chamber unit. The apparatus and the method for manufacturing sulfur impregnated biochar for wastewater treatment according to the present invention has the advantage of maximizing the nitrogen treatment efficiency in a wastewater treatment system performing heterotrophic denitrification and autotrophic denitrification of biochar, utilizing the biochar as filter media for water treatment capable of preventing pH reduction of treated water, and enhancing the utility of waste organic resources, which is conventionally neglected, by impregnating sulfur, which acts as an electron donor of autotrophic denitrification applying sulfur oxidizing denitrifying bacteria to the surface of the biochar after a physical activation step of supplying water to the surface of the biochar obtained by pyrolyzing biomass at a low speed so as to increase the specific surface area of the biochar.

Description

[0001] The present invention relates to an apparatus and a manufacturing method for sulfur-impregnated bio-tea for water treatment,

The present invention relates to an apparatus and a method for manufacturing a sulfur-impregnated biochar which can be used as a water treatment filter material, and more particularly, to an apparatus and a method for producing bio- The biochain can be used as a filter medium for water treatment by impregnating sulfur acting as an electron donor in an autothermal denitrification applying a sulfation denitrification bacteria to the surface of the biochip after a physical activation step of increasing the specific surface area of the tea. And a method for manufacturing the sulfur-impregnated bio-tea for water treatment.

In recent years, agricultural and forestry by-products have been released every year. Some of them are incinerated, but most by-products are left untouched. Therefore, it is urgent to plan ways to effectively utilize such waste organic resources.

For this purpose, techniques for recycling these agricultural and forest byproducts as biochar obtained by pyrolyzing the air under controlled conditions have been developed. Specific details regarding the production of such bio-tea are described in the following [ And the like.

However, in the case of bio-tea according to the prior art, most of them were utilized as a greenhouse gas reduction or a soil improvement agent for agriculture. However, in spite of the filtration ability unique to bio-tea, they were rarely used as a water treatment agent for treating wastewater. When the tea is applied as a water treatment agent, there is a problem that the pH of the treated water increases due to the elution characteristics of the remaining inorganic components after pyrolysis unlike activated carbon.

Meanwhile, recently, a sewage treatment system using an artificial wetland as disclosed in the following [2], which was filed by the inventors of the present invention as a method for treating sewage generated in a small scale in rural areas, is being developed. In the case of sewage treatment system, the nitrogen treatment efficiency (TN treatment efficiency) is low due to the characteristics of domestic sewage having low C / N, because most of the nitrogen contained in the wastewater is treated by heterotrophic denitrification.

To solve this problem, a sewage treatment system using an artificial wetland that maximizes the treatment efficiency of nitrogen in combination with autotrophic denitrification using heterotrophic denitrification and denitrification with sulfuric acid has recently been developed. However, There is a problem that the pH of the treated water decreases due to the ions.

[Patent Document 1] Korea Patent Publication No. 2010-0117954 (disclosed on Nov. 4, 2010)

[Literature 2] Korean Patent No. 1236175 (issued on February 26, 2013)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a biocide, which is produced by pyrolyzing biomass composed of agriculture and forest byproducts, The present invention provides a sewage treatment system in which heterotrophic denitrification and independent nutrient denitrification are performed in combination with the above-mentioned biocide, thereby preventing the pH of the treated water from being reduced while maximizing the nitrogen treatment efficiency And to provide a manufacturing apparatus and a manufacturing method of sulfur-impregnated bio-tea for water treatment that can be utilized as a water treatment filter material.

It is another object of the present invention to provide a bioaccelerator which is capable of maximizing the sulfur impregnation efficiency by structuring the sulfur in the vapor state in the chamber part accommodating the bio- And to provide a manufacturing apparatus and a manufacturing method of a bio-tea.

In order to accomplish the above object, an apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to the present invention comprises a chamber portion in which a biomass is received, a heater portion which applies heat to the inside of the chamber portion, A water supply part for supplying water to the chamber part, a water supply part for supplying sulfur to the inside of the chamber part, and pyrolysis of the biomass by biocharging by applying heat to the chamber part, The water supply unit and the purge gas supply unit to control the operation of the heater unit, the water supply unit, and the purge gas supply unit so that the sulfur is adhered to the surface of the biochip with the increased specific surface area, by supplying sulfur to the chamber unit by increasing the specific surface area of the pyrolyzed biochip And a control unit for controlling the display unit.

In order to maintain the interior of the chamber in an anaerobic state when pyrolyzing the biomass, a nitrogen supply unit for supplying nitrogen into the chamber by a control operation of the control unit, or a vacuum pump for evacuating the inside of the chamber, And at least one of the above-mentioned components.

The apparatus may further include a diaphragm for supporting the biomass installed in the chamber and separating the chamber internal space into an upper space and a lower space and a vacuum pump unit connected to one side of the lower space, And the control unit activates the vacuum pump unit when sulfur is supplied to the chamber unit so that the supplied sulfur is adhered to the surface of the biochip while flowing in the direction of the lower space through the through holes .

In addition, at least one nozzle device for spraying water onto the surface of the bio-disc is formed inside the chamber part, connected to the water supply part.

The sulfur supply unit may include a sulfur powder reservoir for storing sulfur in powder form and an opening and closing member for supplying or blocking the sulfur powder to the chamber through the transfer pipe.

In addition, the sulfur supply unit may further include a blowing device installed at one side of the transfer pipe to uniformly supply the sulfur powder into the chamber.

A method for manufacturing a sulfur-impregnated bio-tea for water treatment according to the present invention comprises the steps of: thermally decomposing a biomass by applying heat to a chamber containing a biomass; A third step of supplying sulfur to the surface of the bio-tea with the increased specific surface area and impregnating the surface of the bio-tea, and a third step of adding at least one of acetone, diluted hydrochloric acid and distilled water And a fourth step of cleaning the sulfur-impregnated bio-car.

The third step further includes operating the vacuum pump connected to the inside of the chamber so that the supplied sulfur flows through the bio-disc and is adhered to the surface of the bio-disc to flow the supplied sulfur inside the chamber .

As described above, according to the present invention, an apparatus and a method for manufacturing a sulfur-impregnated bio-tea for water treatment include a physical activation step of increasing the specific surface area of bio-tea by supplying water to the surface of the bio-tea obtained by low-speed thermal decomposition of the biomass After the coarse grains, the sulfur that acts as an electron donor for the autotrophic denitrification, which is applied to the surface of the bio-tea, is impregnated with sulfuric acid denitrifying bacteria. Thus, in the sewage treatment system in which the bio-tea is subjected to heterotrophic denitrification and autotrophic denitrification, It is possible to utilize it as a water treatment filter material capable of maximizing the pH while preventing the decrease in the pH of the treated water, and at the same time, it is possible to improve the utilization of waste organic matter resources that have been left untouched.

In addition, according to the present invention, there is provided an apparatus and a method for manufacturing a sulfur-impregnated bio-tea for water treatment, wherein when sulfur is attached to the surface of a bio-car, a vacuum pump is operated to cause a sulfur in a vapor state to pass through the bio- So that the sulfur impregnation efficiency can be maximized.

1 is a view showing a configuration of an apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to a first embodiment of the present invention,
Fig. 2 is a block diagram for explaining the operational configuration of the apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment shown in Fig. 1,
3 is a flowchart for explaining a method of manufacturing a bio-car using the apparatus for producing a sulfur-impregnated bio-tea for water treatment shown in Fig. 1, and Fig.
4 is a view showing a configuration of an apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to a second embodiment of the present invention.

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

(Embodiment 1)

FIG. 1 is a view showing the construction of an apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to a first embodiment of the present invention, and FIG. 2 is a view for explaining the operational configuration of the apparatus for manufacturing a sulfur- FIG. 3 is a flowchart for explaining a method of manufacturing a bio-car using the apparatus for producing a sulfur-impregnated bio-tea for water treatment shown in FIG. 1. FIG.

An apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to the present invention comprises a chamber 10, a heater 60 for supplying heat to the inside of the chamber 10, A water supply part 30 for supplying water, and a water supply part 40 for supplying sulfur inside the chamber part 10.

The chamber portion 10 may include, for example, an inner chamber 12 in which the biomass is contained, an outer chamber 11 surrounding the outer portion of the inner chamber 12, And a heat insulating layer 13 which is made of a resin.

At this time, the inner chamber 12 may be made of a metallic material such as stainless steel or a heat-resistant plastic material. The insulating layer 13 protects the heater unit 60 and maintains the temperature constant It is preferable that it is made of a heat insulating material such as refractory brick.

In addition, the outer chamber 11 is preferably made of an insulating material to prevent the heat generated in the inner chamber and the heat insulating layer 13 from being transmitted to the outside.

In the present embodiment, the case where the chamber part 10 is composed of three layers has been described as an example. However, the present invention is not limited thereto, and if necessary, the chamber part 10 may be formed into a single layer, .

In addition, although not clearly shown in FIG. 1, it is preferable that the chamber part 10 is structured to be openable and closable from the outside so that the inflow of the biomass and the outflow of the bio-car can be facilitated.

The chamber 10 is installed in the inside 14 of the inner chamber 12 through the outer chamber 11 and the heat insulating layer 13 from the outside so that water is supplied to the inner chamber 12 And a plurality of nozzle devices 51 for uniformly spraying the supplied water onto the surface of the bio-disc are provided at the end of the supply tube 50 on the side of the inner chamber 12, Respectively.

The heater unit 60 is used for thermally decomposing the biomass contained in the inner chamber 12 as described above by transferring heat to the interior of the inner chamber 12, It is preferable that the heating amount of the inner chamber 12 is controlled so that the inner temperature of the inner chamber 12 can be easily controlled.

In the present embodiment, the heater 60 is provided inside the heat insulating layer 13. However, the present invention is not limited to this, and if necessary, the heater 60 may be directly attached to the inner portion 14 of the inner chamber 12 May be configured to be installed.

The water supply unit 30 supplies water to the inner chamber 12 to physically activate the bio-car by increasing the specific surface area of the pyrolyzed bio-car as described above. A water supply pipe 31 connecting the water storage tank and the supply pipe 50 and a water supply pipe 31 provided in the middle of the water supply pipe 31 to connect the water in the water storage tank 32 to the inner chamber 12, And a water supply valve 33 for supplying or shutting off the water.

At this time, the water supply valve 33 may be a mechanical type manual valve, but it may be an electronic valve operated by a control operation of the control unit 100 as described later.

The water supply unit 30 may further include a pressurizing unit (not shown) such as a compressor for supplying water at a constant pressure. The water supply unit 30 may include a purge supply unit 40 and a nitrogen supply unit 20, .

The purge gas supply portion 40 is for supplying sulfur to the inner chamber 12 to increase the specific surface area as described above to impinge sulfur on the surface of the physically activated biochar.

The purge gas supply unit 40 includes a sulfur powder reservoir 42 disposed outside the chamber unit 10 for storing sulfur in powder form and a purifier unit 42 for connecting the sulfur reservoir 42 and the interior of the inner chamber 12 And a sulfur powder feed valve 43 provided in the middle of the sulfur powder feed pipe 41 for supplying or blocking sulfur powder of the sulfur powder storage tank 42 to the inner chamber 12, .

At this time, the sulfur powder supply valve 43 may also be constituted by a mechanical manual valve, but it may be constituted by an electronic valve operated by a control operation of the controller 100 as described later.

The purge gas supply 40 may further include a pressurizing device (not shown) for supplying pressurized air as described above to uniformly supply sulfur powder to the interior of the inner chamber 12, (Not shown) such as a fan installed at one side or in the middle of the sulfur powder feed pipe 41. [

Generally, in the case of the autodetection of autotrophic denitrification using a sulfation denitrifying bacteria, an appropriate amount of an alkaline agent to compensate for the pH of the treated water reduced by the hydrogen ions generated by the reaction of the following formula (1) Supply must be made.

However, since the water treatment filter material applied to the artificial wetland according to the prior art is composed of sand, gravel and crushed stone having a low alkalinity, as described above, the pH of the treated water reduced in the autotrophic denitrification process can not be neutralized , There is a problem in that it is inevitable to add a separate alkaline agent together with the supply of sulfur.

However, when the sulfur-impregnated bio-tea obtained by the production apparatus according to the present invention is applied to a water treatment media, the impregnated sulfur functions not only as an electron donor in the autotrophic denitrification by the sulfation denitrifying bacteria, It is possible to neutralize the pH of the treated water reduced by the denitrification.

It is preferable that the pyrolysis process of the biomass is performed under an anaerobic condition in which oxygen in the air is intercepted. To this end, an apparatus for producing a bio-tea for water treatment according to the present invention comprises A nitrogen supply part 20 for supplying nitrogen or a vacuum pump part 24 for vacuum processing the inside 14 of the inner chamber 12 may be further provided.

At this time, either one of the nitrogen supply unit 20 and the vacuum pump unit 24 may be installed, but both of them may be installed as in the present embodiment.

In the case where two of them are installed as in the present embodiment, the inside 14 of the inner chamber 12 may be first vacuumed using the vacuum pump unit 24, and nitrogen may be supplied by the nitrogen supply unit 20 , And nitrogen may be supplied to the inner portion 14 of the inner chamber 12 while operating the vacuum pump portion 24, if necessary.

The nitrogen supply unit 20 includes a nitrogen storage tank 22 installed outside the chamber 10 and a nitrogen storage tank 22 connecting the nitrogen storage tank 22 to the inside 14 or the supply pipe 50 of the inner chamber 12, And a nitrogen supply valve 23 installed in the middle of the nitrogen supply pipe 21 and supplying or blocking nitrogen of the nitrogen storage tank 22 to the inner chamber 12. [

The vacuum pump unit 24 is connected to the inside 14 of the inner chamber 12 through a vacuum tube 23.

The apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to the present invention configured as described above may be configured to be a manual type in which temperature control or supply of nitrogen gas and water is directly operated by a user. In this embodiment, And is configured to be operated automatically by a control signal of the control unit 100 for convenience.

To this end, an apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to the present embodiment includes an input unit 110 for inputting operational conditions and the like by a user, a temperature sensor unit 120 for sensing an internal temperature of the inner chamber 12, The nitrogen supplier 20, the water supplier 30, the purifier 40, and the controller 40 according to a control algorithm previously stored in the memory unit 140, And a control unit (100) for controlling the operation of the vacuum pump unit (24).

Hereinafter, a method for manufacturing a bio-tea using the apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to this embodiment configured as described above with reference to FIG. 3 will be described in detail.

First, when an operation start signal is input through the input unit 110, the control unit 100 controls the operation of the nitrogen supply unit 20 to supply nitrogen to the interior 14 of the inner chamber 12 containing the biomass S10). In this case, the control unit 100 may operate the vacuum pump unit 24 together, if necessary.

When the inside 14 of the inner chamber 12 is maintained in the anaerobic state by the step S10, the controller 100 operates the heater 60 to supply heat to the inside 14 of the inner chamber 12 (S20).

The controller 100 pyrolyzes the biomass by bio-lubrication by driving the heater unit 60 so that the inner chamber 12 reaches a predetermined first set temperature (S30). In this case, the controller 100 Preferably allows the temperature of the inner chamber 12 to gradually reach a first set temperature over a long period of time so that the biomass can be sufficiently decomposed by low rate thermal decomposition.

For example, in the present embodiment, the first set temperature is set to 600 to 900 ° C, and the temperature of the inner chamber 12 is raised at a rate of several tens of minutes to several tens of degrees Celsius, So that the first set temperature can be reached.

When the step S30 is completed, the controller 100 determines whether the temperature of the inner chamber has reached the first predetermined temperature (S40). If the temperature of the inner chamber has not reached the predetermined temperature, the control unit 100 repeats the step S30 The operation of the heater unit 60 is controlled so that the heating of the inner chamber 12 and the low-speed thermal decomposition of the biomass are performed.

On the other hand, if it is determined in step S40 that the inner chamber 12 has reached the first set temperature, the controller 100 controls the heater unit (not shown) to maintain the inner chamber 12 at the first set temperature 60 (S50).

When the step S50 is completed, the control unit 100 controls the operation of the water supply unit 30 so that water can be sprayed onto the surface of the bio-car (S60).

In this case, since the supplied water is vaporized by the heat of the inner chamber 12 in the process of being sprayed through the nozzle, the water is sprayed in the form of water vapor on the surface of the bio-disc.

In addition, as described above, the bio-generated by the water injection is subjected to a physical activation process in which the specific surface area is greatly increased.

The controller 100 stops the operation of the heater unit 60 and causes the temperature of the inner chamber 12 to cool to the second set temperature in step S70. In this case, (Not shown) such as a cooling fan separately provided in the chamber part 10 may be operated.

At this time, as an example in the present embodiment, the second set temperature is set to 400 to 500 ° C.

When the step S70 is completed, the controller 100 determines whether the temperature of the inner chamber has reached the second preset temperature (S80). If the temperature of the inner chamber has not reached the predetermined temperature, the control unit 100 repeats the step S70 Allowing the inner chamber 12 to cool.

On the other hand, if it is determined in step S80 that the inner chamber 12 has reached the second set temperature, the controller 100 controls the heater unit (not shown) so that the inner chamber 12 can be maintained at the second set temperature 60 (S90).

In this embodiment, the second set temperature is maintained for about 30 minutes to about 2 hours in step S90.

When the step S90 is completed, the controller 100 supplies sulfur powder to the inner chamber 12 at a predetermined ratio to control the operation of the purifier 40 so that sulfur can be adhered to the surface of the biochar (S100 In which case the sulfur fed to the inner chamber 12 in powder form is evaporated by heat and impregnated on the surface of the bio-disc in the form of vapor.

When the step S100 is completed, the controller 100 stops the operation of the heater unit 60 and terminates the control (S110).

3, when the preparation of sulfur-impregnated bio-tea for water treatment is completed by the above-described method, at least one of acetone, 0.1N dilute hydrochloric acid, It is preferable to further perform the process of washing the impregnated bio-tea. In this embodiment, the cleaning is performed by sequentially using acetone, hydrochloric acid, and distilled water.

As described above, according to the present invention, an apparatus and a method for manufacturing a sulfur-impregnated bio-tea for water treatment include a physical activation step of increasing the specific surface area of bio-tea by supplying water to the surface of the bio-tea obtained by low-speed thermal decomposition of the biomass After the coarse grains, the sulfur that acts as an electron donor for the autotrophic denitrification, which is applied to the surface of the bio-tea, is impregnated with sulfuric acid denitrifying bacteria. Thus, in the sewage treatment system in which the bio-tea is subjected to heterotrophic denitrification and autotrophic denitrification, It is possible to utilize it as a water treatment filter material capable of maximizing the pH while preventing the decrease in the pH of the treated water, and at the same time, it is possible to improve the utilization of waste organic matter resources that have been left untouched.

(Second Embodiment)

4 is a view showing a configuration of an apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to a second embodiment of the present invention.

Since the second embodiment of the present invention differs from the first embodiment only in the configuration of the inner chamber 12, only the parts related to the second embodiment will be described below, and a detailed description of the remaining parts will be omitted .

For convenience of description, the same reference numerals are given to the same constituent elements as those of the above-described first embodiment.

The apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to the present embodiment supports biomass installed and accommodated inside the inner chamber 12 in comparison with the first embodiment described above, And further includes diaphragms 15a, 15b, 15c separating into an upper space 14a and a lower space 14b.

The diaphragms 15a, 15b and 15c are composed of a funnel side surface 15a inclined in the direction of the lower space 14b and a planar bottom surface 15b connecting the lower end of the side surface 15a, The bottom surface 15b functions to support the received biomass and the bio-car which pyrolyzes the biomass.

At this time, a plurality of through holes 15c are formed in the bottom surface 15b. The through holes 15c provide a path through which steam in the vapor state supplied to the inner chamber 12 flows, as described later.

In the apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to the present embodiment having the above-described structure, when the control unit 100 carries out the step S100 described in the first embodiment, the vacuum pump unit connected to the lower space 14b 24).

Therefore, the sulfur vaporized in the upper space 14a and present in a vapor state is introduced into the lower space 14b through the through hole 15c through the bio-disc supported by the bottom surface 15b while the side surface 15a performs guiding function. And the impregnation of sulfur is carried out on the surface of the bio-tea in the flow process.

According to the above-described structure, the apparatus for manufacturing a sulfur-impregnated bio-tea for water treatment according to the present embodiment is characterized in that the vaporized sulfur is present in a vapor state without being adhered to the surface of the bio-disc or attached to the wall surface of the inner chamber 12, It is possible to improve the impregnation efficiency of sulfur.

10: chamber part 20: nitrogen supply part
30: water supply part 40:
60: heater section 100:

Claims (9)

A chamber part in which a biomass is received;
A heater for applying heat to the inside of the chamber;
A water supply part for supplying water into the chamber part;
A purifier for supplying sulfur into the chamber;
A diaphragm for supporting the biomass installed inside the chamber and separating the chamber internal space into an upper space and a lower space;
A vacuum pump unit connected to one side of the lower space; And
The chamber is heated to decompose the biomass into biochar, and water is supplied to the chamber to increase the specific surface area of the pyrolyzed bio-car, and sulfur is supplied to the chamber, A water supply portion, a vacuum supply portion, and a vacuum pump portion so that sulfur is adhered to the surface of the bio-disc with increased surface area,
Wherein the diaphragm has a through hole formed in a portion supporting the biomass,
Wherein when the sulfur is supplied to the chamber part, the control part activates the vacuum pump part so that the supplied sulfur flows in the direction of the lower space through the through hole to be impregnated on the surface of the bio-tea. Manufacturing apparatus. The method according to claim 1,
A nitrogen supply part for supplying nitrogen into the chamber part or a vacuum pump part for vacuum processing the inside of the chamber part by a control operation of the control part to maintain the inside of the chamber part in the case of pyrolyzing the biomass, Wherein the at least one sulfur-containing bio-tea is at least one selected from the group consisting of sulfuric acid, sulfuric acid, and sulfuric acid. delete 3. The method according to claim 1 or 2,
And at least one nozzle device connected to the water supply part for spraying water onto the surface of the bio-disc is formed inside the chamber part. The method according to claim 1,
Wherein the sulfur supply unit comprises a sulfur powder reservoir for storing sulfur in powder form and an opening and closing member for supplying or blocking the sulfur powder to the chamber through the transfer pipe. . 6. The method of claim 5,
Wherein the sulfur supply unit further comprises a blowing device installed at one side of the transfer pipe to uniformly supply the sulfur powder into the chamber. delete delete delete

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