KR102266939B1 - Residualization of Obstructive Organic Compound Using Laser and Reduction Method of Waste Water - Google Patents

Abstract

The present invention aggregates hardly decomposable organic matter contained in wastewater through electrolysis and evaporates difficult-to-decompose organic matter through laser heating, so that it is possible to remove difficult-to-decompose organic matter contained in wastewater, and the difficultly decomposable organic matter contained in wastewater. Since it is removed with a laser, it is possible to remove the difficult-to-decompose organic matter in the wastewater with a high speed and low energy, and because the laser removes the difficult-to-decompose organic matter contained in the wastewater through the laser, the wastewater using a laser prevents eutrophication, green algae, and red tide in the wastewater It relates to an apparatus for reducing difficult-to-decompose organic matter, comprising: a first electrode part formed in an enlarged part of a flow pipe through which wastewater flows or in the center of a storage tank in which wastewater is temporarily stored, to which '+' power is applied; A plurality of second electrode units are formed on the wall of the expansion tube and the wall of the storage tank, and to which power is applied; a laser heating unit for locally heating the second electrode unit by irradiating a laser from the outside of the flow tube or an upper side of the storage tank; It characterized in that it comprises a temperature sensing unit for sensing the temperature of the second electrode unit heated through the laser heating unit, and a control unit connected to the first electrode unit, the second electrode unit, the laser heating unit and the temperature sensing unit to control it. .

Description

Residualization of Obstructive Organic Compound Using Laser and Reduction Method of Waste Water

The present invention relates to an apparatus for reducing recalcitrant organic matter in wastewater using a laser, and more particularly, by aggregating recalcitrant organic matter contained in wastewater through electrolysis and evaporating recalcitrant organic matter through laser heating. It makes it possible to remove difficult-to-decompose organic matter, and because the laser removes the difficult-to-decompose organic matter contained in the wastewater, it is possible to remove the difficult-to-decompose organic matter from the wastewater with a high speed and low energy, and to remove the difficult-to-decompose organic matter contained in the wastewater through the laser. Therefore, it relates to an apparatus for reducing indecomposable organic matter in wastewater using a laser that prevents eutrophication, green algae, and red algae phenomena in wastewater.

In general, high concentration organic wastewater such as plating wastewater or livestock wastewater has a very high concentration of organic matter and nitrogen, so it is common to remove organic matter and nitrogen through nitrification and denitrification treatment after anaerobic treatment.

However, in the case of organic matter, only a part is oxidized through anaerobic treatment, so an aerobic aeration tank should be installed at the rear end to remove residual organic matter. In addition, since nitrification can be induced after organic matter is removed, the residence time in the aerobic tank is also lengthened, and after nitrification, the treatment process is complicated because denitrification must be induced through internal transport.

That is, the process of treating wastewater containing high concentrations of organic matter and nitrogen requires a long residence time of microorganisms and wastewater in the reactor because the removal of organic matter is a prerequisite, and the overall process is complicated.

In Korea, most of the high-concentration wastewater treatment, including sewage treatment and livestock wastewater, is dependent on the activated sludge method. Activated sludge method is a method developed to remove low-concentration organic matter and suspended solids. It is suitable for removing organic matter and suspended solids from low-concentration sewage, but is not suitable for removing organic matter, nitrogen and phosphorus from high-concentration wastewater. Therefore, as a process for treating nutrients such as nitrogen and phosphorus, advanced treatment methods such as physical, chemical and biological treatment methods are used.

As the physicochemical treatment method, ammonia degassing method, ion exchange method using selective adsorption method, phosphorus precipitation method using slaked lime and coagulant, and struvite formation precipitation method in which nitrogen and phosphorus are simultaneously precipitated, etc. this is being used

However, the physicochemical methods described above have disadvantages such as temperature sensitivity and high cost, and difficulties in operation due to limited drug costs and operating environments, and unstable effluents, so they are used in the field worldwide. are reluctant to

In the case of nitrogen in the biological treatment method, ammonia nitrogen and organic nitrogen in a dissolved state are nitrified (ammonia is transformed into nitrate form) by nitrifying bacteria (eg, Nitrosomonas and Nitrobacter) under aerobic conditions, and nitrate is denitrified. Oxidizing bacteria (eg, Pseudomonas, Paracoccus denitrifiers) use it as an electron acceptor instead of oxygen under anoxic conditions, convert it to nitrogen gas, and release it to the atmosphere (denitrification) to remove it.

As a method for overcoming the above wastewater treatment problem, the DEPHANOX process developed in Italy may be mentioned. In this process, the microorganisms adsorb organic matter in the anaerobic contact tank using the anaerobic contact tank and the separation tank, induce the release of phosphorus, separate the adsorbed organic material and the microorganism in the separation tank, and introduce it into the subsequent denitrification tank, Nitrogen compounds are nitrified in a separate reactor and sent to a subsequent denitrification tank to be denitrified by microorganisms adsorbing organic matter.

That is, the DEPHANOX process is a process in which denitrification and nitrification are performed in separate sludge and reaction tanks, and phosphorus is ingested excessively by microorganisms in the subsequent second aerobic reactor.

However, despite these advantages of the DEPHANOX process, organic nitrogen and ammonia nitrogen flowing into the denitrification tank from the separation tank during the subsequent treatment in the nitrification tank are not sufficiently decomposed or nitrified and discharged, and only in a single denitrification tank following the nitrification tank. Since denitrification is performed, there is a disadvantage that high nitrogen removal efficiency cannot be expected.

In order to supplement this problem, as a prior art, a cation exchange simultaneous organics and nitrogen removal (CESON) process was developed as a simultaneous ammonia and organic denitrification process using cation exchange and biological reaction.

However, in the CESON process, since the movement of nitrate from the aerobic tank to the anaerobic tank is restricted by the cation exchange membrane, when the load of ammonia is increased, nitrate is accumulated inside the aerobic tank.

That is, in the case of actual livestock wastewater, it contains more than 1,500 mg N/L of ammonia and 10,000 mg CODCr/L or more of nitrogen and organic matter, but in the CESON process, the movement of high-load ammonia to the cation exchange membrane is limited. There is a problem in that there is a limit to the removal of high concentration organic matter and nitrogen.

Therefore, in order to improve the processing performance of the CESON process, it is necessary to increase the supply rate of ammonia required for the biological reaction. That is, there is a problem in that the movement of ammonia to the aerobic tank through ion exchange, denitrification using microorganisms, and a technique for improving the decomposition rate of organic matter are required.

The prior patent discloses that in the process of simultaneously removing organic matter and organic nitrogen through a bioelectrochemical reaction, an external potential is applied to the cathode installed in the anaerobic tank and the anode installed in the aerobic tank, thereby promoting the decomposition of organic matter and through the cation exchange membrane. It increases the rate of movement of ammonia from the anaerobic tank to the aerobic tank, and the ammonia transferred to the aerobic tank is converted into nitrate, and the converted nitrate is denitrified and discharged as nitrogen gas, so the configuration is described to improve the wastewater treatment capacity and reduce the treatment time has been

However, the prior patent has a problem in that a large amount of chemicals and a large processing space are required to remove organic matter, and the efficiency is lowered over time, so there is a problem in that it is necessary to continuously replace the chemicals and processing equipment required for maintenance.

Prior Patent: Korean Patent Registration No. 10-1325209 (2013.10.29.)

The present invention aggregates hardly decomposable organic matter contained in wastewater through electrolysis and evaporates difficult-to-decompose organic matter through laser heating, so that it is possible to remove difficult-to-decompose organic matter contained in wastewater, and the difficultly decomposable organic matter contained in wastewater. Since it is removed with a laser, it is possible to remove the difficult-to-decompose organic matter in the wastewater with a high speed and low energy, and because the laser removes the difficult-to-decompose organic matter contained in the wastewater through the laser, the wastewater using a laser prevents eutrophication, green algae and red tide in the wastewater It relates to a device for reducing recalcitrant organic matter.

In order to achieve the above object, the apparatus for reducing incombustible organic matter in wastewater using a laser according to the present invention for achieving the above object is formed in the expanded portion of a flow pipe through which wastewater flows or in the center of a storage tank in which wastewater is temporarily stored, to which '+' power is applied. electrode part; A plurality of second electrode units are formed on the wall of the expansion tube and the wall of the storage tank, and to which power is applied; a laser heating unit for locally heating the second electrode unit by irradiating a laser from the outside of the flow tube or an upper side of the storage tank; It characterized in that it comprises a temperature sensing unit for sensing the temperature of the second electrode unit heated through the laser heating unit, and a control unit connected to the first electrode unit, the second electrode unit, the laser heating unit and the temperature sensing unit to control it. .

The second electrode part formed on the wall surface of the storage tank 1 is formed in the shape of a conveyor belt so that part of the wastewater is heated through the laser of the laser heating part by the rotation of the belt, and the belt is made of metal and damaged by the laser of the laser heating part It is characterized in that the prevention body is formed to remove the conveyed wastewater buried inside the belt.

The laser heating unit is characterized in that it is irradiated by generating a _{CO 2 laser.}

In the apparatus for reducing incombustible organic matter of the present invention, power is applied to the first electrode part and the second electrode part so that the hardly decomposable organic material is aggregated in the second electrode part, and CO ₂ laser is irradiated through the laser heating part to produce 2 It is characterized in that the electrode part is heated to remove the hardly decomposable organic matter.

The present invention has the effect of allowing the hardly decomposable organic matter contained in the wastewater to be removed because the hardly decomposable organic matter contained in the wastewater is agglomerated through a '-' power source and the difficult decomposable organic material is evaporated through laser heating.

In addition, since the laser removes the difficult-to-decompose organic matter contained in the wastewater, there is an effect that can remove the difficult-to-decompose organic matter from the wastewater with high speed and low energy.

In addition, since the difficult-to-decompose organic matter contained in the wastewater is removed through the laser, there is an effect of preventing eutrophication, green algae, and red tides in the wastewater.

1 is a view showing that an apparatus for reducing incombustible organic matter in wastewater using a laser according to an embodiment of the present invention is formed on a flow pipe.
Figure 2 is a view showing that the apparatus for reducing the recalcitrant organic matter in wastewater using a laser according to the present invention is formed in the storage tank,.
FIG. 3 is a view showing that a scraper is formed in the second electrode part when the apparatus for reducing incombustible organic matter in wastewater using a laser according to the present invention is installed in a storage tank.

Hereinafter, specific embodiments for carrying out the present invention will be described with reference to the drawings. The embodiment of the present invention is intended to explain one invention, and the scope of rights is not limited to the illustrated embodiment, and the illustrated drawings are limited to the drawings because only the essential content is enlarged and illustrated for clarity of the invention and incidental elements are omitted. should not be interpreted as such.

The present invention is formed in the center of the expansion portion 12 of the flow pipe 10 through which wastewater flows or the storage tank 1 in which wastewater is temporarily stored, the first electrode part 60 to which '+' power is applied; A plurality of second electrode parts 50 are formed on the wall surface of the expansion portion 12 of the flow pipe 10 and the wall surface of the storage tank 1, and to which power is applied; a laser heating unit 20 for locally heating the second electrode unit 50 by irradiating a laser from the outside of the flow pipe 10 or the upper side of the storage tank 1; A temperature sensing unit 30 for sensing the temperature of the second electrode unit 50 heated by the laser heating unit 20 , and the first electrode unit 60 , the second electrode unit 50 , and the laser heating unit (20) and the temperature sensing unit (30) is characterized in that it comprises a control unit (40) for controlling.

The second electrode part 50 formed on the wall surface of the storage tank 1 is formed in the shape of a conveyor belt so that part of the wastewater is heated through the laser of the laser heating part 20 by the rotation of the belt, and the belt is made of metal It is characterized in that the prevention body 55 is formed to prevent damage due to the laser of the laser heating unit 20 and to remove wastewater transferred by being buried inside the belt.

The laser heating unit 20 generates and irradiates a _{CO 2 laser.}

In the apparatus for reducing incombustible organic matter of the present invention, power is applied to the first electrode unit 60 and the second electrode unit 50 so that the non-decomposable organic material is aggregated on the second electrode unit 50, and the laser heating is performed. _{By irradiating the CO 2} laser through the unit 20, the second electrode unit 50 is heated to remove the incombustible organic material.

1 is a view showing that an apparatus for reducing incombustible organic matter in wastewater using a laser according to an embodiment of the present invention is formed on a flow pipe, and the expansion portion 12 of the flow pipe 10 through which wastewater flows or the wastewater is temporarily stored Formed in the center of the storage tank 1 to be formed in the first electrode portion 60 to which '+' power is applied, a plurality of surfaces are formed on the wall surface of the expansion part 12 of the flow tube 10 and the wall surface of the storage tank 1, -'The second electrode part 50 to which power is applied, the laser heating part 20 for locally heating the second electrode part 50 by irradiating a laser from the outside of the flow tube 10 or the upper side of the storage tank 1, a laser The temperature sensing unit 30 and the first electrode unit 60 , the second electrode unit 50 , and the laser heating unit 20 for sensing the temperature of the second electrode unit 50 heated through the heating unit 20 . and a control unit 40 connected to and controlling the temperature sensing unit 30 .

2 is a view showing that the apparatus for reducing incombustible organic matter in wastewater using a laser according to the present invention is formed in a storage tank, and FIG. 3 is a case in which the apparatus for reducing incombustible organic matter in wastewater using a laser according to the present invention is installed in the storage tank It is a view showing that a scraper is formed in the second electrode part.

1 to 3 , the first electrode unit 60 is connected to the control unit 40 and is formed in a plate shape so that the '+' power applied from the control unit 40 is applied.

The first electrode part 60 is formed in the center of the expansion portion 12, which is formed to have a small diameter so that the contact area of the flow pipe 10 through which the wastewater flows, is increased and the center of the storage tank 1 in which the wastewater is stored. A '+' voltage is applied to flowing wastewater or stored wastewater.

The flow pipe 10 allows the wastewater flowing through the flow part 11 to pass through the expansion part 12 and to contact the second electrode part with as much waste water as possible, and the expansion part 12 is the flow pipe 10 . ) is formed to be small in a certain section so that the flowing wastewater contacts the second electrode part as much as possible.

The wastewater passing through the expansion part 12 is again flowed into the treatment tank or the storage tank 1 through the flow part 11 having the same diameter as the flow pipe 10 at the front end of the expansion part 12 .

An injection pipe 15 is formed in the storage tank 1 to introduce wastewater into the storage tank 1 to supplement it, and the injection pipe 15 is opened and closed through a valve 16 formed on the injection pipe 15 , Ensure that wastewater is injected only up to the set water level.

The second electrode unit 50 is formed on the expanded surface portion 12 of the flow pipe 10 or on the wall side of the storage tank 1, and is easily decomposed in wastewater through the '-' power applied from the control unit 40 . The organic material is electrolyzed to agglomerate on the second electrode part 50 .

The difficult-to-decompose organic material is composed of biochemical oxygen demand (BOD), chemical oxygen demand (COD), nitrogen (N) or phosphorus (P).

When '-' power is applied to the second electrode part 50 and the incombustible organic material is aggregated on the second electrode part 50 , the wall surface of the expanded portion 12 of the flow tube 10 through the laser heating part 20 . The outside or the upper side of the second electrode part 50 of the storage tank 1 is heated with a laser to evaporate and remove the hard-to-decomposable organic material that is agglomerated on the second electrode part 50 .

When the second electrode part 50 is formed on the wall surface of the expansion part 12 of the flow pipe 10, a plurality of them are formed in the shape of the flow pipe 10, and a plurality of the second electrode parts 50 are formed on the wall surface of the expansion part 12 of the flow pipe 10, When the second electrode part 50 is formed on the wall surface of the storage tank 1 , the second electrode part 50 is formed in a conveyor belt shape to continuously transport wastewater upward through the second electrode part 50 . The wastewater is heated through the laser heating unit 20 so that the incombustible organic matter in the wastewater is evaporated and decomposed.

Inside the belt of the second electrode part 50 formed in the storage tank 1, a preventive body 55 for removing the wastewater deposited by the belt is formed through contact so as to be removed from the belt.

The prevention body 55 is to prevent the belt from being separated from the rotating roll due to the dried residue when the waste water buried inside the belt and transferred is heated and dried through the laser heating unit 20 .

At this time, the second electrode part 50 is made of a metal material so as not to be damaged when the _{CO 2 laser is irradiated.}

The laser heating unit 20 _{generates a CO 2} laser and irradiates the target second electrode unit 50 to heat the second electrode unit 50 so that the incombustible organic material is heated and evaporated and removed.

In this case, the laser heating unit 20, the reasons for irradiation to generate a CO ₂ laser is therefore substantially damaging CO ₂ laser to the second electrode portion 50 of the metallic material, the second damage to the electrode parts 50 is to prevent

Such the laser heating unit 20 CO that amplifier unit, an amplifier for amplifying by removing wavelengths other than the wavelengths required by the beam expansion unit, the expanded CO ₂ laser to expand the laser generating unit, CO ₂ generating a CO ₂ Laser ₂ It may be composed of a concentrating portion irradiating the laser to the outer wall or the second electrode unit 50 to the local area by concentrating the laser.

In the case of the storage tank 1, since a part of the wastewater is continuously evaporated by irradiating the second electrode part 50 with a laser, the amount of wastewater is continuously reduced.

This wastewater is replenished through the injection pipe 15. Since this replenishment is only possible by detecting the level of wastewater inside the storage tank 1, the water level detecting unit 90 is formed on the upper side or wall of the storage tank 1 to remove the waste water. The water level is sensed and transmitted to the control unit 40.,

The water level detection unit 90 may be formed of a laser detection sensor or a detection sensor that directly detects the height of the wastewater.

The temperature sensing unit 30 includes the temperature of the second electrode unit 50 heated together with the outer wall from the outside of the expanded portion 12 of the flow pipe 10 and the second electrode unit 50 of the reservoir 1 that is locally heated. The heating temperature of the heating part is sensed and transmitted to the control unit 40 .

The first electrode unit 60 , the second electrode unit 50 , the laser heating unit 20 , the water level sensing unit 90 , and the temperature sensing unit 30 are connected to the control unit 40 and the control unit 40 . It is controlled through the control signal of

The voltage and current applied to the first electrode unit 60 and the second electrode unit 50 are applied to the reference set value set in the control unit 40, and set the standard to evaporate and remove the incombustible organic material more rapidly. By applying a voltage and current higher than the values, a larger amount of the hardly decomposable organic material is aggregated in the second electrode part 50 .

The control unit 40 controls the operation of the laser heating unit 20 so that the second electrode unit 50 is heated through the laser heating unit 20 when the hard-to-decompose organic material is agglomerated on the second electrode unit 50 . .

The power control of the laser heating unit 20 is performed by the control unit 40, and the second electrode unit 50 sensed from the outer wall of the expanded surface portion 12 of the flow tube 10 sensed by the temperature sensing unit 30. When the temperature and the temperature of the heating part of the second electrode part 50 of the storage tank 1 are sensed and transmitted to the controller 40, the laser heating part according to the temperature of the second electrode part 50 sensed by the controller 40 The heating temperature is controlled by increasing or decreasing the power of (20).

The control unit 40 is disposed on the injection pipe 15 formed in the storage tank 1 to maintain the wastewater level of the storage tank 1 sensed through the water level detection unit 90 within a predetermined water level set in the control unit 40 . The valve 16 is controlled to allow additional inflow of wastewater to be replenished.

In the case of the storage tank 1, on the rotation direction side of the second electrode part 50, the residue of wastewater that can be heated and dried by the laser heating part 20 is attached to the belt-shaped second electrode part 50 and then again. Since it can be introduced into the storage tank 1, the scraper 80 that comes into contact with the belt of the second electrode part 50 is formed so as to scrape and control the residue.

Accordingly, the residue temporarily stored in the scraper 80 may be sucked through the discharge unit 70 and discharged to a separate storage space.

A method of removing the hardly decomposable organic matter using the apparatus for reducing the hardly decomposable organic matter of the present invention is as follows.

Power is applied to the first electrode unit 60 and the second electrode unit 50 through the control unit 40 so that the non-decomposable organic material is aggregated on the second electrode unit 50 , and the laser heating unit 20 is heated. By irradiating the CO ₂ laser to the second electrode part 50 and heating the second electrode part 50, the difficult-to-decompose organic material is removed.

The present invention made in this way has the effect of allowing the hardly decomposable organic matter contained in the wastewater to be removed because the hardly decomposable organic matter contained in the wastewater is aggregated through electrolysis and the difficultly decomposed organic matter is evaporated through laser heating.

In addition, since the laser removes the difficult-to-decompose organic matter contained in the wastewater, there is an effect that can remove the difficult-to-decompose organic matter from the wastewater with high speed and low energy.

In addition, since the difficult-to-decompose organic matter contained in the wastewater is removed through the laser, there is an effect of preventing eutrophication, green algae, and red tides in the wastewater.

The apparatus for reducing incombustible organic matter in wastewater using a laser as described above is not limited to the configuration and operation method of the above-described embodiments. The above embodiments may be configured so that various modifications may be made by selectively combining all or part of each of the embodiments.

1: storage tank
10: flow pipe 11: flow part
12: expansion part 15: injection tube
16: valve
20: laser heating unit 30: temperature sensing unit
40: control unit
50: second electrode part 55: prevention body
60: first electrode part 70: discharge part
80: scraper 90: water level sensing unit

Claims (4)

a first electrode unit 60 to which '+' power is applied, which is formed in the expanded portion 12 of the flow pipe 10 through which wastewater flows or in the center of the storage tank 1 in which wastewater is temporarily stored;
A plurality of second electrode parts 50 are formed on the wall surface of the expansion portion 12 of the flow tube 10 and the wall surface of the storage tank 1, and to which power is applied;
a laser heating unit 20 for locally heating the second electrode unit 50 by irradiating a laser from the outside of the flow tube 10 or the upper side of the storage tank 1;
A temperature sensing unit 30 for sensing the temperature of the second electrode unit 50 heated through the laser heating unit 20, and
a control unit 40 connected to the first electrode unit 60 , the second electrode unit 50 , the laser heating unit 20 and the temperature sensing unit 30 to control;
The second electrode part 50 formed on the wall surface of the storage tank 1 is formed in the shape of a conveyor belt so that part of the wastewater is heated through the laser of the laser heating part 20 by the rotation of the belt, and the belt is made of metal A device for reducing incombustible organic matter in wastewater using a laser, characterized in that the prevention body 55 is formed to prevent damage due to the laser of the laser heating unit 20, and to remove the transported wastewater buried inside the belt. .
According to claim 1,
The laser heating unit 20 _{generates and irradiates a CO 2} laser. A device for reducing incombustible organic matter in wastewater using a laser, characterized in that it is irradiated.
According to any one of claims 1 to 2, in the hardly decomposable organic matter reduction device,
Power is applied to the first electrode part 60 and the second electrode part 50 so that the incombustible organic material is aggregated on the second electrode part 50 , and the CO ₂ laser is irradiated through the laser heating part 20 . A reduction method using a device for reducing incombustible organic matter in wastewater using a laser, characterized in that the second electrode part 50 is heated to remove the incombustible organic matter. delete

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