KR102029623B1 - Method and and apparatus for recycling livestock excretions using reverse osmosis - Google Patents

Abstract

The present invention relates to a method and an apparatus for treating livestock excretion to be reused by using reverse osmosis. According to the present invention, solid, foreign substances, organic matters (BOD), and nitrogen are removed from excretion discharged from a pen by a screen separation process, a decanter separation process, a pre-denitrifying process, an aeration process, a post-denitrifying process, and a membrane separation process, and then, treatment liquid is treated to be reused by a reverse osmosis process. The treatment liquid is separated into a first concentrate and treated water in the first reverse osmosis process, and then the first concentrate is separated into a second concentrate and treated water in the second reverse osmosis process to return the treated water to the first reverse osmosis process again. Also, the treated water separated in the first reverse osmosis process is separated into a third concentrate and treated water in the third reverse osmosis process, and the third concentrate is returned to the first reverse osmosis process again to be separated into a concentrate and final filtered water. Therefore, the concentrate filtered by the second reverse osmosis process is formed to be a liquefied fertilizer and compost while reducing the use of chemicals and satisfying enhanced environmental standards than the conventional invention. The final filtered water separated in the third reverse osmosis process is used as pen washing water or livestock drinking water or is reused in a colorless and odorless state to reduce use of underground water and to prevent river contamination.

Description

Method and apparatus for recycling livestock manure using reverse osmosis {Method and and apparatus for recycling livestock excretions using reverse osmosis}

The present invention relates to a method and apparatus for reusing livestock manure using reverse osmosis, and more specifically, to removing solids, foreign matter, organic matter (BOD) and nitrogen during pretreatment and biological treatment of livestock manure and chemicals by reverse osmosis. Treating the concentrate with filtrate to meet enhanced environmental standards while reducing the use of chemicals, the concentrate is liquid and composted, and the filtrate is used as barn wash water and livestock drinking water or reused as colorless, odorless and groundwater. The present invention relates to a method and apparatus for recycling livestock manure using reverse osmosis to reduce use and prevent river pollution.

Recently, as the demand for livestock products has soared, cattle, pigs, chickens, and other livestock are raised in large quantities, and thus, a large amount of livestock manure processing that occurs during livestock raising is a serious social problem.

Such livestock manure not only causes soil and groundwater contamination, but also causes various problems that cause bad smells and worsen the living environment of nearby residents.

For this reason, the conventional livestock manure has been processed so as to be resourceized by purification, liquid manure, and compost.

However, the above-mentioned purification equipment for treating livestock manure is used only for washing the barn because the water quality of the livestock manure is deteriorated, and the water quality is not stable because it cannot continuously obtain water quality suitable for drinking water or other uses of livestock. As a result, the scope of reuse is very limited, and the problem of soil and groundwater contamination has not been substantially solved while exceeding the total nitrogen discharge standard under the revised discharge standard (Environmental Law).

In particular, the Ministry of Environment issued a 2014 Guidelines for Total Water Pollution. With the addition of the individual manure discharged items for animal manure consignment, the discharge pollutant that was recognized as a resource for composting and manure was “0”. Therefore, compost and manure treatments are classified as contaminants in the conventional concept of resource recycling, which makes it difficult to treat livestock manure in areas where the total amount of contaminants is applied.

In other words, if the total farm area and treatment facility area is more than 5,000㎡ when establishing a new farm, it is difficult to establish a farm due to the small amount of development load that can be allocated in most areas.

As described above, the livestock manure has been purged and discharged (manure, manure) treatment, but the development of livestock manure recycling technology is urgently needed to solve the total amount of pollution.

Patent Registration No. 10-1831421 (February 14, 2018) Patent Registration No. 10-1813159 (December 21, 2017)

The present invention has been invented to solve the above problems of the prior art, the removal of solids, foreign matter, organic matter (BOD) and nitrogen in the pre-treatment and biological treatment process of livestock manure after the use of chemicals by reverse osmosis Treat the concentrate and the filtrate to separate the filtrate to meet enhanced environmental standards, while reducing the concentration of the concentrate and compost, and the filtrate can be used as barn wash and livestock drinking water or reused as colorless and odorless, reducing groundwater use and streams. The purpose is to prevent contamination.

The present invention is to reduce the concentrated liquid generated from the livestock manure larger than the conventional to improve the problem of the concentrate treatment or environmental pollution, as well as to solve the total amount of pollution, so that the objective to overcome the conventional livestock manure treatment problem have.

The present invention uses a pretreatment filter and a reverse osmosis filter, to detect the contamination of the pretreatment filter to check the replacement time, as well as to automatically perform the process of backwashing the reverse osmosis filter by the final filtered water. The purpose of this simple and efficient as well as to maximize the service life of the reverse osmosis filter is to provide excellent economy.

The present invention collects the manure discharged from the barn and passes through the screen to screen the solids, and screening process, and adding a polymer flocculant to the treatment solution from which the solids were filtered to form a floc by decanter A decanter separation process for separating the treatment liquid, a total denitrification process for removing nitrogen from the treatment liquid by inducing denitrification using microorganisms in the treatment liquid, and aeration in the treatment liquid to remove organic matter (BOD) and nitrogen. Aeration process, post-denitrification process to remove residual nitrogen by reacting microorganism and organic carbon source (methanol) to the treatment liquid, and membrane separation process to filter organic matter and suspended solids (SS) by passing the treatment liquid through a separation membrane And performing a reverse osmosis process in which the treated solution is separated and discharged into a concentrate and final filtrate by a reverse osmosis filter,

The reverse osmosis process separates the treatment liquid into a primary concentrate and treated water by a reverse osmosis filter in a first reverse osmosis process, and the primary concentrate is treated with a secondary concentrate by a reverse osmosis filter in a second reverse osmosis process. The treated water separated by the water is returned to the first reverse osmosis process, and the treated water separated in the first reverse osmosis process is separated into the third concentrate and the treated water by the reverse osmosis filter in the third reverse osmosis process, and the third concentrate Is characterized by providing a method for recycling livestock manure using reverse osmosis to separate and discharge the concentrate and the final filtrate by returning to the first reverse osmosis process.

The present invention provides a water tank for storing the manure discharged from the barn, a screen for filtering the solids of the manure collected in the water collection tank, a storage tank for storing the treatment liquid from which the solids are filtered, and a polymer flocculant in the treatment liquid of the storage tank. Adding a floc to form a floc, and using a centrifugal force to separate the floc and the treatment liquid, a flow adjusting tank for storing the treatment liquid separated by the decanter, and nitrogen of the treatment liquid. A total denitrification tank for removing microorganisms under anoxic conditions, an aeration tank for removing organic matter (BOD) and nitrogen using microorganisms under aerobic (air supply) conditions, and nitrogen remaining in the treatment liquid A post-denitrification tank for reacting and removing a carbon source (methanol), a separation membrane tank for removing organic matter and suspended solids (SS) from the treatment solution using a flat membrane, and the separation Configuration but the treatment solution passing through the tank to a processing tank and, the reverse osmosis means for discharge by separating the treatment liquid in the treatment tank to the concentrate and the filtered water by reverse osmosis to store; The reverse osmosis means comprises a first reverse osmosis filter unit for separating the treatment liquid into a primary concentrate and treated water by a first reverse osmosis process, and the concentrate separated in the first reverse osmosis filter unit in a second reverse osmosis process. By separating the secondary concentrate and the treated water by the second reverse osmosis filter unit for returning the treated water to the first reverse osmosis filter unit, and the treated water separated by the first reverse osmosis filter unit by the third reverse osmosis process Separating the tertiary concentrate and the treated water, the tertiary concentrate by the third reverse osmosis filter unit for returning to the first reverse osmosis filter unit separated livestock manure recycling apparatus using reverse osmosis configured to separate and discharge the concentrated filtrate Its features are provided.

According to the present invention, the first, second and third reverse osmosis filter units are composed of a pretreatment filter and a reverse osmosis filter, and the pretreatment filter of the first reverse osmosis filter unit includes a disk filter, a bag filter and a micro filter, and the second filter. The pretreatment filter of the reverse osmosis filter unit is characterized in that the bag filter and the micro filter, and the pretreatment filter of the third reverse osmosis filter unit are composed of a micro filter.

According to the present invention, the membrane pore size of the pretreatment filter is characterized in that formed in the order of disk filter> bag filter> micro filter> reverse osmosis filter.

According to the present invention, the first, second, third reverse osmosis filter unit is characterized in that the installation of a pressure gauge for measuring the pressure between the pretreatment filter and the reverse osmosis filter to determine whether the pretreatment filter is operating normally. .

According to the present invention, the third reverse osmosis filter unit has a feature of installing a UV disinfection lamp for disinfecting and discharging bacteria and bacteria in the final filtered water.

According to the present invention, the third reverse osmosis filter unit is configured to connect a filter backwash unit for cleaning the reverse osmosis filter unit of the first, second and third reverse osmosis filter units using the final filtered water, wherein the filter backwash unit comprises a third A pump used to wash the filter by supplying a storage tank storing a part of the final filtered water discharged from the reverse osmosis filter unit and the washing water of the storage tank to the reverse osmosis filter of the first, second and third reverse osmosis filter units through a washing line. It is characterized by its configuration.

The present invention is to remove the solids, foreign matter, organic matter (BOD) and nitrogen by the screen separation process, decanter separation process, denitrification process, aeration process, post-denitrification process and membrane separation process to remove the manure discharged from the barn After removal, the treatment solution is reusably treated by a reverse osmosis process, which is separated into a primary concentrate and a treated water in a first reverse osmosis process, and the concentrate is subjected to a secondary concentrate and a treated water in a second reverse osmosis process. The treated water is separated and returned to the first reverse osmosis process, and the treated water separated in the first reverse osmosis process is separated into the third concentrate and the treated water in the third reverse osmosis process, and the third concentrate is returned to the first reverse osmosis. By returning to the process, the process concentrates to separate the concentrate and the final filtrate, thereby reducing the use of chemicals and processing to meet the enhanced environmental standards. The concentrate filtered by the liquor is fertilized and composted, and the final filtrate separated in the third reverse osmosis process is used as livestock washing water and livestock drinking water or reused as colorless and odorless to reduce groundwater use and prevent river pollution. .

In particular, by greatly reducing the concentration of the livestock manure from 20 to 30% to 5 to 10% of the conventional solution to improve the treatment problem of the concentrate or environmental pollution, as well as to solve the total amount of pollution, the conventional livestock manure treatment problem substantially It is to have an effect that can be overcome.

In addition, the present invention uses a pretreatment filter and a reverse osmosis filter, to detect the contamination of the pretreatment filter to check the replacement time, as well as to automatically perform the process of backwashing the reverse osmosis filter by the final filtered water. Not only is it easy and efficient to manage, but it is also economical because it can maximize the service life of the reverse osmosis filter.

1 is a process chart of the present invention treatment method for recycling livestock manure.
2 is a flow chart showing the reverse osmosis process of FIG.
Figure 3 is a block diagram of the present invention livestock manure recycling apparatus.
4 is a schematic view showing the reverse osmosis means of FIG.

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

The treatment method for recycling livestock manure using reverse osmosis of the present invention collects the manure discharged from the barn as shown in FIGS. 1 and 2, and then screens the screening process to filter the solids through the screen, and the treatment liquid filtered out the solids. A decanter separation process in which a floc is formed by adding a polymer flocculant to the decanter and the floc and the treatment liquid are separated by a decanter; and a total denitrification process of removing nitrogen from the treatment liquid by inducing denitrification using microorganisms in the treatment liquid; Aeration process to remove the organic matter (BOD) and nitrogen by generating aeration in the treatment liquid, Post-denitration process for removing residual nitrogen by reacting the microorganism and organic carbon source (methanol) to the treatment liquid, and the treatment liquid A membrane separation process for filtering organic matter and suspended solids (SS) through a separation membrane, and separating the treated solution into a concentrate and a final filtrate by a reverse osmosis filter. The reverse osmosis process is performed, but the reverse osmosis process separates the treatment liquid into the first concentrate and the treated water by a reverse osmosis filter in the first reverse osmosis process, and the first concentrate is reverse osmosis in the second reverse osmosis process. The filter is separated into a secondary concentrate and treated water, and the treated water is returned to the first reverse osmosis process, and the treated water separated in the first reverse osmosis process is treated with a third concentrate by a reverse osmosis filter in the third reverse osmosis process. The third concentrate is separated into treated water and is returned to the first reverse osmosis to separate and discharge the concentrate and the final filtrate.

Here, the secondary concentrate filtered in the second reverse osmosis process is used as a liquid fertilizer, composting, and the final filtrate separated and discharged in the third reverse osmosis process is to be used as a stall wash water and livestock drinking water or reused in a colorless, odorless state. .

The present invention collects the manure discharged from the barn and passes through the screen to screen the solids, and screening process, and adding a polymer flocculant to the treatment solution from which the solids were filtered to form a floc by decanter A decanter separation process for separating the treatment liquid, a total denitrification process for removing nitrogen from the treatment liquid by inducing denitrification using microorganisms in the treatment liquid, and aeration in the treatment liquid to remove organic matter (BOD) and nitrogen. Aeration process, post-denitrification process to remove residual nitrogen by reacting microorganism and organic carbon source (methanol) to the treatment liquid, and membrane separation process to filter organic matter and suspended solids (SS) by passing the treatment liquid through a separation membrane A concentrated liquid that satisfies the enhanced environmental standards while discharging the treatment liquid and reducing the use of chemicals by the first, second and third reverse osmosis processes. But treated to remove the final filtrate, the concentrate was liquid manure, can be composted, and the final process is to make and use a pen wash water and animal drinking water or reused as a colorless, odorless state to reduce ground water use, prevent river contamination.

Livestock manure reuse treatment apparatus for implementing the livestock manure recycling method using the reverse osmosis pressure of the present invention as shown in Figure 3 and 4, the sump tank 200, screen 210, storage tank 220, decane Te 230, flow tank 240, total denitrification tank 250, aeration tank 260, post denitrification tank 270, membrane separation tank 280, treatment water tank 290, and reverse osmosis means 100 It consists of.

1. sump

The sump tank 200 is configured to keep the manure discharged from the barn and maintain the concentration uniformly.

Here, the sump tank 200 is configured to have a capacity to store the manure for 3 to 4 days according to the form of the barn (pregnancy, delivery, piglets, fattening) to dilute the concentration of the manure.

2. Screen

The screen 210 is configured in the form of a net inclined to filter out the solids (hair, feed dregs, etc.) of the manure collected in the sump.

The screen 210 forms a particle size to filter out a solid having a size of 0.75 mm or more, and the solid filtered out of the screen is separated to remove moisture by a compression dehydration method.

3. Storage tank

The storage tank 220 is configured to store the processing liquid from which the solids are filtered out of the screen 210.

The storage tank 220 is configured to have a capacity to store for 3 to 4 days in order to maintain a uniform concentration of the treatment liquid.

4. Decanter

The decanter 230 is a facility for forming a floc by adding a polymer flocculant to the treatment liquid stored in the storage tank 220 and then separating the floc and the treatment liquid using centrifugal force.

The decanter 230 is configured to remove up to 85-95% of contaminants (BOD, SS) in the treatment liquid.

5. Flow adjustment tank

The flow rate adjustment tank 240 is configured to store the processing liquid separated by the decanter and to adjust the amount of the processing liquid introduced into the next step.

The flow rate adjustment tank 240 is configured to have a capacity to store the processing liquid for 3 to 4 days in order to adjust the amount of the processing liquid.

6. Total denitrification tank

The total denitrification tank 250 is configured to remove nitrogen from the treatment liquid.

The total denitrification tank 250 removes nitrogen contained in the treatment liquid by inducing denitrification using microorganisms under anoxic conditions.

7. Aeration tank

The aeration tank 260 is configured to remove organic matter (BOD) and nitrogen using microorganisms under aerobic (air supply) conditions.

In other words, organic matter is removed by microorganisms under aerobic (air supply) conditions, and nitrogen (T-N) is oxidized in the process to change its properties.

8. Post denitrification tank

The post-denitrification tank 270 is configured to remove nitrogen remaining in the treatment liquid in a second manner, and to react to remove nitrogen by reacting microorganisms with an organic carbon source (methanol).

The organic carbon source (methanol) is to adjust the input amount of the organic carbon source (methanol) in accordance with the nitrogen content value.

9. MBR bath

The separation membrane tank 280 is configured to remove organic matter and suspended solids (SS) of the treatment liquid by using a flat membrane.

The flat membrane is to form fine pores of 0.23㎛ to separate the organic material and suspended solids (SS).

Wherein the organic matter and suspended solids (SS) is configured to return to the aeration tank again.

And the separation membrane tank 280 can be operated at a high concentration (MLSS: 8,000 ~ 10,000mg / L), can be configured to prevent clogging of the flat membrane through the air supply from the bottom of the installation.

10. Treatment tank

The treatment tank 290 is configured to store the treatment liquid separated from the membrane tank 280 to adjust the amount of water discharged to the next step.

11. Reverse Osmosis (Reverse Osmosis)

The reverse osmosis means 100 is configured to separate and discharge the treatment liquid of the treatment tank into the concentrate and the filtered water by the reverse osmosis method; This is constituted by the first, second and third reverse osmosis filter units 10, 20 and 30 respectively forming the pretreatment filter and the reverse osmosis filter.

The first reverse osmosis filter unit 10 separates the treatment liquid supplied from the treatment tank into a primary concentrate and treated water by a first reverse osmosis process, and the second reverse osmosis filter unit 20 is a first reverse osmosis filter. The concentrate separated in the osmotic filter unit is separated into a secondary concentrate and treated water by a second reverse osmosis process, and the treated water is returned to the first reverse osmosis filter unit 10 and the third reverse osmosis filter unit ( 30) separates the treated water separated by the first reverse osmosis filter unit into the third concentrate and the treated water by the third reverse osmosis process, the third concentrate is returned to the first reverse osmosis filter unit (10) To separate and discharge the concentrate and the final filtrate.

Here, the first, second, third reverse osmosis filter unit 10, 20, 30 is composed of pre-treatment filters 11, 21, 31 and reverse osmosis filters (15, 25, 35). The pretreatment filter 11 of the first reverse osmosis filter unit may include a disk filter 41, a bag filter 42 and a micro filter 43, and the pretreatment filter 21 of the second reverse osmosis filter unit may include a bag filter ( 42, the microfilter 43, and the pretreatment filter 31 of the 3rd reverse osmosis filter part are comprised with the micro filter 43. As shown in FIG.

The membrane pore size of the pretreatment filters 11, 21, 31 is formed in the order of disk filter> bag filter> micro filter> reverse osmosis filter.

In addition, the first, second and third reverse osmosis filter units 10, 20, 30 are disposed between the pretreatment filters 11, 21, 31 and the reverse osmosis filters 15, 25, 35. Install and configure a pressure gauge 60 to measure the pressure to check whether the pretreatment filter is operating normally.

That is, the pressure gauge 60 is configured to inform the pretreatment filter replacement time by measuring that the water pressure is lowered by reducing the amount of water passing through the pretreatment filter due to a large amount of debris in the pretreatment filters 11, 21, 31. It is.

In addition, the third reverse osmosis filter unit 30 is provided with a UV disinfection lamp 70 for disinfecting and discharging the bacteria and bacteria in the final filtered water.

The third reverse osmosis filter unit 30 includes a filter reverse washing unit for cleaning the reverse osmosis filters 11, 21, 31 of the first, second and third reverse osmosis filter units using a part of the final filtered water. 50 is to configure the connection.

The filter backwashing unit 50 may include a storage tank 51 storing a part of the final filtered water discharged from the third reverse osmosis filter unit 30 and washing water 55, 56, 57 of the storage tank. It is composed of a pump 52 that is used to wash the filter by supplying to the reverse osmosis filter (11) (21) (31) of the first, second, third reverse osmosis filter unit through a).

At this time, the washing water is diluted and supplied with caustic soda and citric acid, which is to oxidize and remove foreign substances such as lime, heavy metal, residue of the reverse osmosis filter.

When the reverse osmosis filter (11) (21) (31) is washed, the valve of the pipe through which the treatment liquid is supplied and discharged is closed to prevent the washing water from being mixed with the treatment liquid, and the washing water is pretreated after washing the filter. It is configured to return to the flow rate adjusting tank of and to reprocess.

In addition, the first, second, and third reverse osmosis filter units 10, 20, and 30 are installed in a plurality of locations TDS measuring device 80, which is the first, second, third reverse osmosis filter unit It is to set the standard and to use it to check the concentration of influent and treated water.

As reference numerals, 14, 24, 34 and 90, 95 denote storage tanks.

The present invention collects the manure discharged from the barn in the water collecting tank 200 to maintain the storage and concentration uniformly.

Then, the collected manure is passed through the screen 210 in the form of a slant to filter out the solids (hair, feed dregs, etc.) of the manure, and the filtered solids are separated again by removing moisture by a compression dehydration method.

The treatment liquid passing through the screen 210 is stored in the storage tank 220 again, and a floc (lump) is formed by adding a polymer flocculant to the treatment liquid and then using a centrifugal force. ) And the treatment liquid.

The treatment liquid is stored in the flow rate adjustment tank 240 and then discharged to the total denitrification tank 250 to induce denitrification using microorganisms under anoxic conditions to remove nitrogen from the treatment liquid.

And in the aeration tank 260 to remove the organic matter (BOD) and nitrogen using the microorganism in aerobic (air supply) conditions, and again to remove the residual nitrogen of the treatment liquid in the post-denitrification tank 270, the microorganism and organic carbon source ( Methanol) to remove residual nitrogen.

After the denitrification process, the organic matter and suspended solids (SS) are separated by a flat membrane forming 0.23 μm fine pores in the separation membrane (MBR) tank 280, and the treatment liquid is discharged to the treatment tank 290. And suspended matter (SS) is returned to the aeration tank again.

At this time, the separation membrane tank 290 is to prevent the blockage of the flat membrane through the air supply from the bottom of the installation.

As described above, the treatment liquid of the treatment tank 290 is separated into the concentrated liquid and the final filtrate by the first, second and third reverse osmosis filter units 10, 20 and 30 in the final reverse osmosis process.

In more detail, the treatment liquid of the treatment tank 290 is supplied to the first reverse osmosis filter unit 10 so as to pass through the pretreatment filter 11 and the reverse osmosis filter 15.

That is, the treatment liquid is filtered through the disk filter 41, the bag filter 42, and the micro filter 43, which are the pretreatment filter 11 of the first reverse osmosis filter unit, in order, and then the reverse osmosis filter 15 The primary concentrate and the treated water are separated by the first reverse osmosis.

In this way, the concentrate separated in the first reverse osmosis filter unit 10 is supplied to the second reverse osmosis filter unit 20 and passes again through the pretreatment filter 21 and the reverse osmosis filter 25, wherein the second reverse osmosis The foreign matter is filtered through the bag filter 42 and the micro filter 43, which are the pretreatment filter 21 of the filter part, and then separated into the secondary concentrate and the treated water by the secondary reverse osmosis process in the reverse osmosis filter 25. do.

Here, the secondary concentrate is stored in a separate tank for liquid fertilization or composting. The treated water is returned to the first reverse osmosis filter unit 10 to perform the reprocessing process.

The treated water separated by the first reverse osmosis filter unit 10 is supplied to the third reverse osmosis filter unit 30 and passes through the pretreatment filter 31 and the reverse osmosis filter 35. The foreign material is filtered through the micro filter 43, which is the pretreatment filter 31 of the osmotic filter unit, and then separated into the tertiary concentrate and the treated water by a third reverse osmosis process in the reverse osmosis filter 35.

Here, the third concentrate is returned to the first reverse osmosis filter unit 10 to perform a reprocessing process, and the treated water is discharged to the final filtered water.

Herein, the present invention is provided between the first, second and third reverse osmosis filter units (10, 20, 30) of the pretreatment filters (11) (21) (31) and the reverse osmosis (15) (25) (35). Pressure gauge 60 is installed in the first, second, and third reverse osmosis filter units, and the amount of water discharged through the pretreatment filter is reduced due to a large amount of debris. When lowered, it informs the replacement filter of the pretreatment filter so that the pretreatment filter can be replaced in a timely manner.

In addition, the final filtered water discharged from the third reverse osmosis filter unit 30 is not reused as it is, but by disinfecting the bacteria and bacteria in the treated water by the UV disinfection lamp 70 to reuse.

That is, the second concentrated liquid filtered by the second reverse osmosis filter unit 20 is liquid fertilized and composted, and the final filtrate separated from the third reverse osmosis filter unit is used as barn washing water and domestic drinking water after sterilization, or colorless and odorless. Will be reused.

And a part of the final filtered water discharged from the third reverse osmosis filter unit 30 is to be used for backwashing the reverse osmosis filters 15, 25, 35 of the first, second, and third reverse osmosis filter units. .

That is, a portion of the final filtrate is stored in the storage tank 51 to dilute caustic soda and citric acid, and then the first, second, and third reverses through the washing lines 55, 56, 57 by the pump 52. Since the filter is supplied to the reverse osmosis filter 15, 25, 35 of the osmosis filter unit, the service life of the filter can be longer than before.

In addition, the reverse osmosis filter of the first, second, third reverse osmosis filter unit 10, 20, 30 in the filter washing process by blocking the supply and discharge lines of the treated water with a valve does not mix the washing water The washing of the filter by the washing water is effectively performed, and the washing water which washes the filter is returned to the flow rate adjusting tank (pretreatment) to be reprocessed.

Therefore, the present invention removes solids, foreign substances, organic matter (BOD) and nitrogen during the pre-treatment and biological treatment of livestock manure, concentrate and treatment to meet the enhanced environmental standards while reducing the use of chemicals by reverse osmosis Treated to separate the water, the concentrate is liquid fertilizer, composting, the treated water is to be used as barn wash water and livestock drinking water or reused in a colorless, odorless state to reduce the use of groundwater and prevent river pollution.

10, 20, 30: first, second, third reverse osmosis filter unit 11, 21, 31: pretreatment filter
15, 25, 35: reverse osmosis filter 41: disk filter
42: bag filter 43: micro filter
50: filter backwash 51: storage tank
52: pump 55,56,57: washing line
60: pressure gauge 70: UV disinfection lamp
100: reverse osmosis means 200: water tank
210: screen 220: storage tank
230: Decanter 240: flow rate adjustment tank
250: total denitrification tank 260: aeration tank
270: post-denitrification tank 280: separation membrane bath
290: treatment tank

Claims (7)

The screen separation process of collecting the manure discharged from the barn and passing through the screen to filter out the solids, and forming a floc by adding a polymer flocculant to the treatment liquid from which the solids are filtered, and then separated the flocs and the treatment liquid by decanter A decanter separation process, a denitrification process for removing nitrogen from the treatment liquid by inducing denitrification using microorganisms in the treatment liquid, an aeration process for removing organic matter and nitrogen by aeration in the treatment liquid, and the treatment A post-denitrification process for removing residual nitrogen by reacting microorganisms with organic carbon sources in the liquid, membrane separation process for filtering organic matter and suspended solids through the separation membrane, and treating the treatment liquid with a concentrate and a reverse osmosis filter. It is carried out by reverse osmosis process to separate and discharge into the final filtered water,
The reverse osmosis process separates the treatment liquid into a primary concentrate and treated water by a reverse osmosis filter in a first reverse osmosis process, and the primary concentrate is treated with a secondary concentrate by a reverse osmosis filter in a second reverse osmosis process. The treated water separated by the water is returned to the first reverse osmosis process, and the treated water separated in the first reverse osmosis process is separated into the third concentrate and the treated water by the reverse osmosis filter in the third reverse osmosis process, and the third concentrate The method for recycling livestock manure using reverse osmosis, characterized in that the discharge to separate the concentrate and the final filtrate by the process to return to the first reverse osmosis process.
A collection tank 200 for storing the manure discharged from the barn, a screen 210 for filtering out the solids of the manure collected in the collection tank, a storage tank 220 for storing the treated liquid filtered out of the solids, and the storage tank. After forming a floc by adding a polymer flocculant to the treatment liquid, a decanter 230 for separating the flocs and the treatment liquid using centrifugal force, a flow rate adjusting tank 240 for storing the treatment liquid separated by the decanter, A total denitrification tank 250 for removing nitrogen from the treatment liquid by using microorganisms under anoxic conditions, an aeration tank 260 for removing organic matter and nitrogen by using microorganisms under aerobic conditions, and the treatment liquid A post-denitrification tank 270 for removing residual nitrogen by reacting microorganisms with an organic carbon source, a separation tank 280 for removing organic substances and suspended solids from the treatment liquid using a flat membrane, and a treatment liquid passed through the separation membrane tank. The treatment tank for storing the 290, and the reverse osmosis means 100 for separating and discharging the treatment liquid of the treatment tank into a concentrate and filtered water by a reverse osmosis method;
The reverse osmosis means 100 is a first reverse osmosis filter unit 10 for separating the treatment liquid into the primary concentrate and the treated water by the first reverse osmosis process;
A second reverse osmosis filter unit separating the concentrated solution separated by the first reverse osmosis filter unit into a secondary concentrate and treated water by a second reverse osmosis process and returning the treated water to the first reverse osmosis filter unit 10 20, and
A third reverse osmosis to separate the treated water separated by the first reverse osmosis filter unit into a third concentrate and a treated water by a third reverse osmosis process and return the third concentrate to the first reverse osmosis filter unit 10. Livestock manure reuse treatment apparatus using a reverse osmosis, characterized in that configured to separate and discharge the concentrate and the final filtrate by the filter unit 30.
The method of claim 2,
The first, second and third reverse osmosis filter units 10, 20 and 30 are composed of pretreatment filters 11, 21 and 31 and reverse osmosis filters 15, 25 and 35,
The pretreatment filter 11 of the first reverse osmosis filter part is a disk filter 41, a bag filter 42 and a micro filter 43, and the pretreatment filter 21 of the second reverse osmosis filter part is a bag filter 42. And micro filter (43), pre-treatment filter 31 of the third reverse osmosis filter unit is composed of a micro filter (43).
delete delete delete The method of claim 3, wherein
The third reverse osmosis filter unit 30 includes a filter reverse washing unit 50 for cleaning the reverse osmosis filters 11, 21, 31 of the first, second, and third reverse osmosis filter units using final filtered water. Configure the connection,
The filter backwashing unit 50 may include a storage tank 51 storing a part of the final filtered water discharged from the third reverse osmosis filter unit 30 and washing water 55, 56, 57 of the storage tank. Cattle manure using reverse osmosis, characterized in that consisting of a pump 52 used to clean the filter by supplying to the reverse osmosis filter (11) (21) (31) of the first, second, second reverse osmosis filter Recycling Processing Unit.

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