KR101068846B1 - System and method for treatment waste water - Google Patents

Abstract

The present invention relates to a high concentration waste liquid treatment system and a method thereof, comprising: a storage facility unit for storing and transporting a high concentration waste liquid; A fire extinguishing unit for extinguishing the high concentration waste liquid transferred from the storage unit to produce a digestive gas; And a separation unit for separating the digestion liquid discharged from the fire extinguishing unit into a concentrate and a treatment liquid, wherein the concentrate separated in the separation unit is recycled to the extinguishing unit.

Thereby, by recycling the concentrated liquid separated from the separation unit to the fire extinguishing unit, it is possible to reduce the process time (cycle) required for the extinguishing process and to increase the production efficiency of the extinguishing gas.

In addition, by solid-liquid separation of the digestion liquid produced by the extinguishing gas in the digestion unit into a concentrated liquid and a treatment liquid, it is possible to reduce the load of the rear end equipment, by removing the nitrogen and harmful gas contained in the solid-liquid separated treatment liquid, discharged The water quality of the treatment liquid and the components of the exhaust gas can be kept stable.

In addition, the compact configuration provides a compact installation space and easy maintenance.

Waste fluid, anaerobic, biogas

Description

High concentration waste liquid treatment system and its method {SYSTEM AND METHOD FOR TREATMENT WASTE WATER}

The present invention relates to a high concentration waste liquor treatment system and a method thereof, and more particularly, to increase the production efficiency of digestive gas by separating the digestion liquid that produced the digestion gas into a treatment liquid (for discharge) and a concentrated liquid (for reprocessing). The present invention relates to a high-density wastewater treatment system and method for improving and discharging the treatment liquid to the water quality suitable for the effluent standard.

In general, various methods have been tried to treat high concentration organic wastewater, such as food waste, livestock wastewater, for example, anaerobic digestion process, pressurized flotation method, long-term aeration after centrifugal dehydration.

In this case, the pressure flotation method is a principle of dissolving air to separate solids and water and mixing the waste water with the dissolved air to float the solids together while rising to the surface.

However, the pressurized flotation method has a problem in that when the solid concentration is 100,000 ppm, it is difficult to coagulate by chemicals and to adjust the amount of air required compared to an appropriate solid required for injury.

In addition, the solid-liquid separation using centrifugation or squaru press was also attempted, but there was a problem in that dehydration was not performed smoothly because a large amount of oil was contained in the waste water, causing clogging.

On the other hand, the anaerobic digestion process is a reaction in which anaerobic microorganisms ingest and decompose organic matter and release inorganic compounds and digestive gas (biogas), and anaerobic digestion process is a traditional technique that has been established in the past, also known as "methane fermentation". do.

The main purpose of the anaerobic digestion process is applied to recover the energy of methane at the same time as the organic waste treatment, anaerobic digestion process is largely divided into pretreatment process, anaerobic digestion process, gas collection and purification process, solid resource recycling process.

The anaerobic digestion process is composed of three stages: an acid fermenter, an acid reducer, and an alkaline fermenter, but this process is a case where fresh sludge is decomposed, and in fact, the digestion time is shortened by rapid digestion without going through an acid reducer.

Conventional anaerobic digestion process has not been actively used as the activated sludge method is spread, but the importance of anaerobic digestion process that can use the digestive gas as renewable energy has emerged recently as the atmospheric environment problems such as global warming.

In addition, the anaerobic digestion process has the advantage of low power consumption compared to activated sludge method that requires the use of a large amount of air, it is suitable for the treatment of high concentration organic waste such as livestock wastewater, manure, sewage sludge and food waste.

In addition, the anaerobic digestion process has advantages in that the operating power is less than that of the activated sludge method, the device is simple and the amount of sludge generated is small, and the reuse of methane gas is possible.

However, the conventional anaerobic digestion process has a problem that the production efficiency of the digestion gas is lowered as the digestion liquid that produces the digestion gas is used and discharged once.

In addition, there is a problem in that the discharged digestion liquid contains a large amount of nitrogen components can not meet the water quality standards suitable for the discharged water standards.

The present invention was created to solve the above problems, an object of the present invention, by reducing the process time (cycle) required for the fire extinguishing process by recycling the concentrated liquid separated from the separation unit to the fire extinguishing unit The present invention provides a high concentration waste liquid treatment system and method for increasing the production efficiency of gas.

It is still another object of the present invention to provide a high concentration waste liquid treatment system and method which can reduce the load of the rear end equipment by solid-liquid separation of the digestion liquid produced by the extinguishing gas from the extinguishing system into a concentrate and a treatment liquid.

It is still another object of the present invention to remove nitrogen and harmful gas contained in a solid-liquid separation treatment liquid, and a high concentration waste liquid treatment system and method capable of stably maintaining the water quality of the treatment liquid to be discharged and the components of the discharge gas. To provide.

Still another object of the present invention is to provide a high concentration waste liquid treatment system and method, which are provided in a compact configuration and which have a small installation space and are easy to maintain.

The object is, according to the present invention, the storage device for storing and transporting the high concentration waste liquid; A fire extinguishing unit for extinguishing the high concentration waste liquid transferred from the storage unit to produce a digestive gas; And a separation unit for separating the digestion liquid discharged from the fire extinguishing unit into a concentrate and a treatment liquid. The concentrate separated from the separator may be achieved by a high concentration waste liquid treatment system recycled to the digestion unit.

Here, the separation unit may include a separation member for separating the digestion liquid transferred from the fire extinguishing unit into a concentrate and a treatment liquid, and a pressure pump for pressurizing the extinguishing liquid inside the separation member.

In addition, the separating member may be provided as a tubular ultra filter (UF) or micro filter (MF).

Here, the separation unit may include a concentrate conveying tube for conveying the separated concentrate to the fire extinguishing unit, and a treatment liquid conveying tube for transferring the separated treatment liquid to the denitrification unit.

On the other hand, the storage unit may include a waste liquid supply pipe to which the waste liquid is supplied, a storage tank in which the supplied waste liquid is stored, and a waste liquid transfer tube for transferring the waste liquid stored in the storage tank to the extinguishing system unit.

Here, the storage tank may further include a storage tank stirrer for mixing the stored waste liquid.

In addition, a heat exchanger may be installed between the storage facility unit and the fire extinguishing unit to maintain the waste liquid being transferred at a predetermined temperature.

Here, the fire extinguishing unit may include a digestion tank for extinguishing the supplied waste liquid and producing a digestion gas, and a extinguishing liquid transport pipe for transferring the extinguishing liquid generated in the digestion tank to the separation unit.

In addition, the digester may further include a digester stirrer for mixing the digestion fluid.

Here, the fire extinguishing facility may further include a waste transport pipe and an incineration facility for transferring and incineration waste (sludge) which is not necessary for the production of the extinguishing gas.

On the other hand, the high concentration waste liquid treatment system may further include a denitrification unit for removing nitrogen contained in the treatment liquid.

The denitrification unit may include a denitrification tank for removing nitrogen contained in the supplied treatment liquid, a treatment liquid discharge tube for discharging the treatment liquid from which the nitrogen has been removed from the denitrification tank, and a gas to which noxious gas generated in the denitrification tank is transferred. It may include a pipe and a gas transfer fan.

In addition, the high concentration waste liquid treatment system may further include a cleaning equipment for cleaning the harmful gas generated in the denitrification equipment.

Here, the cleaning equipment unit may include a wet cleaning tank for cleaning the supplied noxious gas and a gas discharge pipe and a gas discharge fan for discharging the gas is completed cleaning.

On the other hand, the object, according to the invention, the step of injecting a high concentration of waste liquid into the storage tank; Stirring the waste liquid stored in the storage tank in an equally mixed state; Injecting the agitated waste liquid into a digester; Digesting the waste liquid stored in the digester to produce digested gas; Separating the digestion liquid discharged from the step of producing the digestion gas into a concentrate and a treatment liquid; Returning the concentrate to the digester and transferring the treatment to a denitrification tank to remove nitrogen contained in the treatment; Cleaning the harmful gas generated in the nitrogen removal step; It may also be achieved by a high concentration of waste liquid treatment method comprising the step of discharging the cleaning gas, the harmful gas is cleaned.

Here, the step of separating the digestion liquid into the concentrate and the treatment liquid may be a step of separating the digestion liquid into the concentrate and the treatment liquid passed through the separation member by pressing the digestion liquid inside the porous separation member.

In addition, the step of removing nitrogen contained in the treatment liquid may be a step of removing nitrogen by adding sodium hydroxide (NaOH) to the treatment liquid.

In addition, the cleaning of the noxious gas may be a step of removing the ammonia gas contained in the noxious gas by cleaning the noxious gas with a wet cleaning tank to which phosphoric acid (H3PO4) is added.

According to the present invention, by recycling the concentrated liquid separated from the separation unit to the fire extinguishing unit, it is possible to reduce the process time (cycle) required for the extinguishing process and increase the production efficiency of the extinguishing gas.

Further, by solid-liquid separation of the digestion liquid produced by the digestion gas from the extinguishing system into a concentrate and a treatment liquid, the load of the rear end equipment can be reduced.

In addition, by removing nitrogen and harmful gas contained in the solid-liquid separated treatment liquid, it is possible to stably maintain the water quality of the treatment liquid to be discharged and the components of the exhaust gas.

In addition, the compact configuration provides a compact installation space and easy maintenance.

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

Prior to this, terms used in the present specification and claims should not be construed in a dictionary meaning, and the inventors may properly define the concept of terms in order to explain their invention in the best way. It should be construed as meaning and concept consistent with the technical spirit of the present invention.

Therefore, the embodiments shown in the present specification and the drawings are only exemplary embodiments of the present invention, and not all of the technical ideas of the present invention are presented. Therefore, various equivalents It should be understood that water and variations may exist.

1 is a schematic diagram of a high concentration waste liquid treatment system according to the present invention.

Referring to Figure 1, the high concentration waste liquid treatment system according to the present invention, the storage unit 10 for storing and transporting the high concentration waste liquid; A fire extinguishing system 20 for extinguishing the high concentration of waste liquid transferred from the storage system 10 to produce fire extinguishing gas; And a separation unit 30 for separating the digestion liquid discharged from the fire extinguishing unit 20 into a concentrate and a treatment liquid, wherein the concentrate separated from the separation unit 30 is recycled to the extinguishing unit 20. Can be.

Here, the storage device 10 is a component for storing and transporting high concentration waste liquid (hereinafter referred to as 'waste liquid').

The storage facility unit 10 is a waste liquid supply pipe for transferring waste liquid stored in the storage tank 13 and the storage tank 13 to which the waste liquid is supplied and the supplied waste liquid to the extinguishing facility unit 20. 15).

Here, the storage tank 13 includes a storage tank stirrer 14 for mixing the stored waste liquid in an equal state, and the waste liquid conveying pipe 15 transfers the waste liquid pump 16 for pressurizing the waste liquid and the transfer of the waste liquid. The controlling waste valve 17 may be installed.

That is, the waste liquid is mixed by the storage agitator 14 in the storage tank 13, and the mixed waste liquid is controlled through the waste liquid transport pipe 15 under the control of the waste liquid pump 16 and the waste liquid valve 17. It may be transferred to the fire extinguishing facility 20.

Here, when the waste liquid mixed by the storage agitator 14 is transferred between the storage facility unit 10 and the fire extinguishing unit 20, a heat exchanger 19 may be installed to maintain the waste solution at a constant temperature. have.

That is, in the high concentration waste liquid treatment system according to the present invention, the mixed waste liquid may be provided to be heated to a predetermined temperature or more through the heat exchanger 19 to be delivered to the fire extinguishing unit 20.

Here, the extinguishing unit 20 is a component for decomposing the waste liquid using digested microorganisms in the anaerobic state of the supplied waste liquid and recovering the digested gas (methane gas, hydrogen gas) produced in the decomposition process.

The fire extinguishing facility 20 is the digestion tank 23 for extinguishing the supplied waste liquid to produce the digestion gas and the digestion liquid (which is digested to some extent with a mixed solution of waste and microorganisms) generated in the digestion tank 23. It may include a digestive fluid transfer pipe 25 to be transferred to the facility (30).

Here, the digester 23 includes a digester stirrer 24 for mixing the transported waste liquid in an equal state, and may include a storage space for microorganisms or chemicals to be introduced into the digestion process.

In addition, the digestive fluid transfer pipe 25 may be provided with a digestive fluid pump 28 for pressurizing the extinguishing fluid discharged after the extinguishing process and a digestive fluid valve 29 for controlling the transport of the extinguishing fluid.

That is, the extinguishing liquid is mixed by the digester stirrer 24 in the digester 23 to perform the extinguishing process, and the extinguishing liquid generated after the extinguishing process is completed is controlled by the extinguishing liquid pump 28 and the extinguishing liquid valve 29. Accordingly, the digestive fluid transfer pipe 25 may be transferred to the separation facility unit 30.

In addition, the fire extinguishing facility 30 may further include a waste transport pipe 26 and an incineration facility unit 27 for transporting and incineration waste (sludge) that is not necessary for the production of the extinguishing gas.

Here, the waste transport pipe 26 and the incineration facility unit 27 is a component for discarding the concentrated liquid separated from the separation facility unit 30 to be described later, if it is no longer necessary for the production of digestion gas anymore. to be.

On the other hand, the separation unit 30 separates the digestion liquid transferred from the fire extinguishing unit 20 into a concentrate and a treatment liquid, the concentrate is returned to the fire extinguishing unit 20, the treatment liquid is a denitrification unit to be described later. 40 is a component for conveying.

The separation facility unit 30 may include a separation member 32 for separating the digestion liquid into a concentrate and a treatment liquid, and a pressure pump 34 for pressurizing the digestion liquid in the separation member 32.

Here, the separating member 32 is a kind of filtration membrane formed of porous resin or porous synthetic resin foam, and is a tubular ultra filter (UF) or micro filter (MF) installed inside a separation tube (not shown). Can be prepared.

The ultrafilters and microfilters have a pore size of 0.5 μm or less, so that sludge or microorganisms contained in the digestive fluid do not pass through, and only the moisture contained in the digestive fluid passes, thereby concentrating the digestive fluid (for circulation) and the treating solution (discharged). Solid) can be separated.

That is, the extinguishing liquid is injected into the tubular separating member 32 installed inside the separating tube, and the extinguishing liquid is pressurized using the pressurizing pump 34, so that the extinguishing liquid can be separated into the concentrated liquid and the treating liquid.

Therefore, the separation facility unit 30 is a concentrated liquid conveying pipe 31 for conveying the separated concentrated liquid to the extinguishing facility unit 20, and a treatment liquid transporting pipe 33 for transferring the separated treatment liquid to the denitrification facility unit 40. ), And may be provided to transport the concentrated liquid and the treatment liquid separated by the liquid separation member 32, respectively.

In addition, the separation facility unit 30 may include a treatment liquid storage tank (not shown) for temporarily storing the separated treatment liquid.

On the other hand, the denitrification unit 40 is a component for satisfying the treatment liquid to the discharge water quality standards by removing a large amount of nitrogen contained in the treatment liquid transferred from the separation equipment unit 30.

The denitrification unit 40 has a denitrification tank 43 stored in the supplied treatment liquid and a treatment liquid discharge pipe 45 and the denitrification tank 43 for discharging the treatment liquid from which the nitrogen is removed from the denitrification tank 43. It may include a gas transfer pipe 41 and the gas transfer fan 42 is the harmful gas generated in the transfer.

In addition, the denitrification unit 40 may be provided to remove the nitrogen contained in the treatment liquid by adding a chemical to the treatment liquid stored in the denitrification tank 43, the storage unit for storing the chemical ( Not shown).

Here, the chemical may be provided with sodium hydroxide (NaOH), it may be provided with a variety of chemicals for removing nitrogen contained in the treatment liquid.

That is, chemicals may be added to the treatment liquid stored in the denitrification tank 43 to remove nitrogen contained in the treatment liquid, and the treatment liquid from which the nitrogen is removed is discharged to the outside through the treatment liquid discharge pipe 45. Can be prepared.

In addition, the treatment liquid discharge pipe 45 may be provided with a denitrification pump 46 for discharging the treatment liquid from which nitrogen has been removed and a denitrification valve 47 for controlling the discharge of the treatment liquid.

That is, the treatment liquid may be discharged to the outside through the treatment liquid discharge pipe 45 under the control of the denitrification pump 46 and the denitrification valve 47.

In addition, the denitrification tank 43 generates harmful gas (typically ammonia gas) in the process of removing nitrogen contained in the treatment liquid.

The harmful gas is transferred to the cleaning facility unit 50 to be described later through the gas transfer pipe 41 and the gas transfer fan 42 connected to the denitrification tank 43.

On the other hand, the cleaning facility unit 50 is a component for cleaning the ammonia gas supplied from the denitrification unit 40 to satisfy the domestic environmental emission standards and then discharge it.

The cleaning facility unit 50 may include a wet cleaning tank 53 for cleaning the ammonia gas, a gas discharge pipe 51 and a gas discharge fan 52 for discharging the gas which has been cleaned.

In addition, the cleaning equipment unit 50 may be provided to remove the ammonia gas contained in the harmful gas by adding a chemical to the wet cleaning tank 53, a storage unit for storing the chemical (not shown) ) May be included.

Here, the chemical may be provided with phosphoric acid (H 3 PO 4), it may be provided with various chemicals for cleaning the ammonia gas.

That is, by passing the harmful gas through the wet cleaning tank 53 into which the phosphoric acid is introduced, ammonia gas contained in the harmful gas can be removed, and the cleaning gas from which the ammonia gas has been removed is passed through the gas discharge pipe 51. It may be provided to be discharged to the outside.

In addition, the gas discharge pipe 51 may be provided with a cleaning gas valve 57 for controlling the discharge of the cleaning gas.

That is, the cleaning gas may be discharged to the outside through the gas discharge pipe 51 under the driving of the gas discharge fan 52 and the control of the cleaning gas valve 57.

Hereinafter, a high concentration waste liquid treatment method according to the present invention with reference to Figure 2 will be described in detail.

Figure 2 is a flow chart for a high concentration waste liquid treatment method according to the present invention.

2, the high concentration waste liquid treatment method according to the invention, the step of injecting the high concentration waste liquid into the storage tank (S10); Stirring the waste liquid stored in the storage tank in an equally mixed state (S20); Injecting the agitation waste liquid into the digester (S30); Digesting the waste liquid stored in the digester to produce digested gas (S40); Separating the extinguishing liquid discharged from the producing gas (S40) into a concentrate and a treatment liquid (S50); Returning the concentrate to the digester and transferring the treatment to a denitrification tank to remove nitrogen contained in the treatment (S60); Washing the harmful gas generated in the nitrogen removing step S60 (S70); And discharging the cleaning gas from which the noxious gas has been cleaned (S80).

First, the waste liquid is injected into the storage tank. (S10)

Here, the waste liquid is supplied to the storage tank through the waste liquid supply pipe.

Next, the waste liquid stored in the storage tank is stirred. (S20)

Here, the waste liquid is mixed in an equal state by the operation of the storage agitator.

Next, the agitation is complete waste liquid is injected into the digester. (S30)

Here, the waste liquid is agitated is injected into the digester while heated to a predetermined temperature or more through a heat exchanger, the waste liquid injected into the digester is additionally mixed by the operation of the digester stirrer.

Next, by extinguishing the waste liquid stored in the digester produces a digestive gas. (S40)

Here, the digested gas (methane gas, hydrogen gas) produced by decomposing the waste liquid by adding digestive microorganisms and chemicals to the waste liquid stored in the digester is recovered, and transfers the remaining digestion liquid to the separation facility.

Next, the digested liquid transferred from the digester is separated into solid-liquid solution (S50), the separated concentrate is returned to the digester, and the treated solution is transferred to a denitrification tank to remove nitrogen contained in the treated solution (S60).

Here, the solid-liquid separation process (S50) consists of injecting the extinguishing liquid into the separation member (filter), and then pressurizing it, and the treatment liquid passing through the separation member is a denitrification unit, the concentrated liquid that did not pass through the separation member. Is returned to the digester to reproduce the digestion gas.

In addition, the concentrated liquid (for waste), which is circulated several times and no longer produces digestive gas, is transferred to an incineration plant through a waste transport pipe and incinerated.

In addition, the step (S60) of removing the nitrogen contained in the treatment liquid may be prepared to remove nitrogen by adding sodium hydroxide (NaOH) to the treatment liquid, it is also possible to add other chemicals to remove the nitrogen Do.

Here, the treatment liquid from which the nitrogen is removed is discharged to the outside through the treatment liquid discharge pipe.

Next, the harmful gas generated in the nitrogen removal step (S60) is washed. (S70)

Here, the harmful gas is transferred to the wet cleaning tank through the gas transfer pipe of the denitrification tank.

In addition, the step of cleaning the noxious gas (S70) is a step of removing the ammonia gas contained in the noxious gas by cleaning the noxious gas with a wet cleaning tank in which phosphoric acid (H3PO4) is added.

Next, the cleaning gas from which the ammonia gas has been removed is exhausted to the outside through the gas discharge pipe installed in the wet cleaning tank.

As described above, the high concentration waste liquid treatment system and the method according to the present invention, by recycling the concentrated liquid separated from the separation unit to the fire extinguishing unit, reducing the process time (cycle) required for the extinguishing process and at the same time produce the digested gas The efficiency can be increased.

In addition, by solid-liquid separation of the digestion liquid produced by the extinguishing gas in the digestion unit into a concentrated liquid and a treatment liquid, it is possible to reduce the load of the rear end equipment, by removing the nitrogen and harmful gas contained in the solid-liquid separated treatment liquid, discharged The water quality of the treatment liquid and the components of the exhaust gas can be kept stable.

In addition, the compact configuration provides a compact installation space and easy maintenance.

As mentioned above, although the present invention has been described by way of limited embodiments and drawings, the technical idea of the present invention is not limited thereto, and a person having ordinary skill in the art to which the present invention pertains, Various modifications and variations may be made without departing from the scope of the appended claims.

Since the accompanying drawings are for understanding the technical spirit of the present invention together with the detailed description of the above-described invention, the present invention should not be construed as limited to the matters shown in the following drawings.

1 is a schematic diagram of a high concentration waste liquid treatment system according to the present invention,

Figure 2 is a flow chart for a high concentration waste liquid treatment method according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: storage equipment part 11: waste liquid supply pipe

13 storage tank 14 storage tank stirrer

15: waste liquid transfer pipe 19: heat exchanger

20: fire extinguishing unit 23: digester

24: digester agitator 25: digestive fluid transfer pipe

26: waste transport pipe 27: incineration facilities

30: separation unit 31: concentrated liquid return pipe

32: separating member 33: treatment liquid transfer pipe

34: pressurized pump 40: denitrification equipment

50: cleaning equipment

Claims (18)

A storage facility unit for storing and transporting the high concentration waste liquid; A fire extinguishing unit for extinguishing the high concentration waste liquid transferred from the storage unit to produce a digestive gas; And a separation unit configured to separate the digestion liquid discharged from the extinguishing unit into a concentrate and a treatment solution. The concentrate separated in the separation unit is recycled to the fire extinguishing unit, The storage unit includes a waste liquid supply pipe for supplying waste liquid, a storage tank for storing the supplied waste liquid, and a waste liquid transfer tube for transferring the waste liquid stored in the storage tank to the extinguishing system unit, The storage tank further includes a storage tank stirrer for mixing the stored waste liquid, Between the storage facility and the fire extinguishing unit is provided a heat exchanger for maintaining the conveyed waste liquid at a constant temperature, The fire extinguishing system includes a fire extinguishing tank for extinguishing the supplied waste liquid to produce fire extinguishing gas, and a fire extinguishing liquid conveying pipe for transferring the extinguishing liquid generated in the extinguishing tank to the separation unit. The digester further comprises a digester stirrer for mixing the digestion liquid, The fire extinguishing unit further includes a waste transport pipe and an incineration unit for transferring and incineration waste (sludge) which is not necessary for the production of the extinguishing gas. Further comprising a denitrification unit for removing nitrogen contained in the treatment liquid, The denitrification unit comprises a denitrification tank for removing nitrogen contained in the supplied treatment liquid, a treatment liquid discharge tube for discharging the treatment liquid from which nitrogen is removed from the denitrification tank, and a gas transfer pipe through which the harmful gas generated in the denitrification tank is transferred; A gas transfer fan, Further comprising a washing unit for cleaning the harmful gas generated in the denitrification unit, The cleaning equipment unit comprises a wet cleaning tank for cleaning the supplied noxious gas and a high concentration waste liquid treatment system comprising a gas discharge pipe and a gas discharge fan for discharging the gas is completed. The method of claim 1, The separating facility unit comprises a separating member for separating the digestion liquid transferred from the extinguishing system into a concentrated liquid and a treating liquid, and a pressurized pump for pressurizing the extinguishing liquid inside the separating member. The method of claim 2, The separating member is a high concentration waste liquid treatment system characterized in that the tubular (Tubular) ultra-filter (UF) or micro filter (MF). The method of claim 2, The separating facility unit comprises a concentrated liquid conveying tube for conveying the separated concentrated liquid to the extinguishing system and a processing liquid conveying tube for transferring the separated processing liquid to the denitrification system. delete delete delete delete delete delete delete delete delete delete Injecting a high concentration of waste liquid into the reservoir; Stirring the waste liquid stored in the storage tank in an equally mixed state; Injecting the agitated waste liquid into a digester; Digesting the waste liquid stored in the digester to produce digested gas; Separating the digestion liquid discharged from the step of producing the digestion gas into a concentrate and a treatment liquid; Returning the concentrate to the digester and transferring the treatment to a denitrification tank to remove nitrogen contained in the treatment; Cleaning the harmful gas generated in the nitrogen removal step; Discharging the cleaning gas in which the noxious gas has been cleaned; Removing the nitrogen contained in the treatment liquid is a step of removing nitrogen by adding sodium hydroxide (NaOH) to the treatment liquid, The washing of the noxious gas is a step of removing the ammonia gas contained in the noxious gas by cleaning the noxious gas with a wet cleaning tank to which phosphoric acid (H3PO4) is added. The method of claim 15, Separating the digestion liquid into the concentrated liquid and the treatment liquid, the high concentration waste liquid, characterized in that the step of separating the concentrated liquid that did not pass through the separation member and the processing liquid passed through the separation member by pressing the digestion liquid in the porous separation member. Treatment method. delete delete

Images