Wastewater Disposal System Type Combustion

Abstract

The present invention relates to a combustion-type wastewater treatment system that separates and treats sludge, which is a precipitate contained in wastewater, and burns and removes air pollutants harmful to the human body in the wastewater. The system comprises: an evaporator that receives wastewater from a wastewater storage tank and heats it with a heating means to induce steam generation; a combustion chamber that receives steam from the evaporator and burns and removes harmful substances in the steam with a combustion means; and a control unit that controls the wastewater storage tank, the evaporator, the heating means, the combustion chamber, and the combustion means.

Description

Technology Field

[0001] The present invention relates to a combustion type wastewater treatment system that separates and treats sludge, which is a precipitate contained in wastewater, and burns and removes air pollutants harmful to the human body in the wastewater. Background Technology

[0003] Generally, methods for purifying industrial wastewater, livestock wastewater, domestic wastewater, etc. include a method in which wastewater is stored in one place and then a coagulant is added to cause foreign substances such as suspended solids contained in the wastewater to clump together and settle, and a method of purifying wastewater by passing it through a screen device that filters sludge (residue).

[0004] However, the method using the aforementioned coagulant had the problem that wastewater treatment was not perfect because the coagulant, which is a chemical agent used to coagulate foreign substances, did not completely coagulate and settle, and furthermore, if the coagulant did not settle together with the sludge and remained in the wastewater, it caused secondary pollution.

[0005] In order to resolve these problems, a combustion-type wastewater treatment device is used to separate wastewater into steam and sludge by heating and evaporating the wastewater without using separate chemicals or coagulants, such as industrial wastewater containing chemicals discharged from various factories, livestock wastewater from ranches, or leachate from waste. The steam is then reduced to condensed water to collect pure water and sludge with the moisture removed.

[0006] Such combustion-type wastewater treatment devices are widely used because they consume less energy through efficient heat exchange using heaters, evaporators, condensers, etc.

[0007] Meanwhile, as the concentration of wastewater increases with the continuous supply of wastewater and sludge, and as the internal humidity increases during the process of generating steam by heating the wastewater with moisture from the sludge and evaporator, the frequency of failure of the combustion wastewater treatment device increases, causing problems with long-term use, and there were difficulties in separating pure water from wastewater and sludge.

[0008] Therefore, in order to resolve the above-mentioned problems, the "low-temperature combustion type wastewater treatment device" of Korean Registered Patent No. 10-2519111 has been provided, and its configuration is as follows.

[0009] - under -

[0010] A main body that stores wastewater supplied from the outside;

[0011] A wastewater heating means comprising: an evaporator provided inside the main body for vaporizing a refrigerant; a compressor provided outside the main body for receiving the refrigerant vaporized from the evaporator and compressing the refrigerant; a condenser provided inside the main body for receiving the refrigerant from the compressor and condensing it; and a heating element provided between the compressor and the condenser that passes through the main body and heats the wastewater.

[0012] A condensate discharge means comprising a condensate collection plate that receives and collects condensate falling from the evaporator, and a condensate discharge part that guides the condensate collection plate to discharge the condensate to the outside of the main body;

[0013] A sludge transfer means provided between the evaporator and the heating element for transferring sludge within the main body to the outside of the main body; and

[0014] A drying means equipped with a blower unit configured to blow air between the condenser and the sludge conveying means from outside the main body and to circulate air within the main body; comprising

[0015] The above drying means comprises a control unit that stops the supply of wastewater at predetermined intervals set by the user and operates the above sludge transfer means;

[0016] A humidity sensor provided on the upper side inside the main body to measure the humidity inside the main body and provide it to the control unit in real time;

[0017] The above control unit is,

[0018] The configuration is such that if the humidity value received from the humidity sensor is lower than or equal to the humidity value preset by the user, wastewater is supplied into the main body, and the operation of the sludge conveying means is stopped.

[0019] The "low-temperature combustion type wastewater treatment device" of Korean Patent No. 10-2519111, which is configured as described above, also had problems such as insufficient complete removal of harmful substances (harmful components) contained in wastewater, which exacerbated air pollution, as well as problems such as high treatment costs making it uneconomical and problems such as inability to efficiently collect and treat sludge. Prior art literature

[0021] Republic of Korea Registered Patent No. 10-2519111 (Publication Date: April 6, 2023) Republic of Korea Registered Patent No. 10-2600193 (Publication Date: November 16, 2023) The problem to be solved

[0022] The present invention was invented to resolve the above-mentioned problems, and its purpose is to provide a combustion-type wastewater treatment system that prevents pollution of the air, water, and soil by heating collected wastewater to generate steam, heating the steam again to burn and remove air pollutants harmful to the human body contained in the steam and releasing them into the atmosphere, and separately collecting and treating the sludge which is a precipitate. means of solving the problem

[0024] The configuration of the means for solving the problem of the present invention for achieving the above objective comprises: a wastewater storage tank (100) having a drain port (110) installed at the bottom, a stirring means (120) installed inside to neutralize the wastewater by adding a neutralizing agent and stirring when the wastewater is acidic or alkaline, and a limit switch (L / S) installed on one side of the top to detect the wastewater level; an evaporation tank (200) that receives wastewater from the wastewater storage tank through a transfer line (L-1) equipped with a transfer pump (P-1), has a drain port (210) with a valve installed at the bottom, a sludge discharge means (220) installed in the drain port to discharge sludge, and a wastewater supply port (230) formed at the top to receive wastewater supplied from the transfer line; and a burner installed on one side of the evaporation tank to heat the wastewater inside the evaporation tank to 80-90°C to generate steam, and supplies oil, which is a combustion fuel, in a spray form. An oil supply means (310), an ignition fuel supply means (320) for supplying an ignition fuel which is either LPG or LNG used to ignite the burner, and an ignition fuel supply control means (330) for controlling the ignition fuel supply pressure of the burner. A heating means (300) comprising an air supply means (340) that supplies air (oxygen) from the atmosphere to a burner; a combustion chamber (400) that receives and burns steam generated in the evaporator through a transfer line (L-2) equipped with an exhaust fan (E) and has an exhaust port (410) installed on one side; a burner that heats the steam in the combustion chamber to 800-900°C to burn and remove harmful substances in the steam, comprising an oil supply means (510) that supplies oil, which is a combustion fuel, in a spray form, an ignition fuel supply means (520) that supplies an ignition fuel, which is either LPG or LNG, used to ignite the burner, and an ignition fuel supply control means (530) that controls the ignition fuel supply pressure of the burner.Combustion means (500) comprising an air supply means (540) that supplies air (oxygen) from the atmosphere to a burner; waste heat recovery means (600) in which a waste heat recovery line (610) is connected and installed between the exhaust port of the combustion chamber and the evaporator to recover waste heat exhausted through the exhaust port and supply it to the evaporator, and a waste heat supply device (620) that supplies waste heat to the evaporator is installed in the waste heat recovery line; a sludge storage tank (700) connected and installed to the sludge discharge means (220) to extract and store sludge within the evaporator; a transfer line (L-4) in which a pump (P-4) is installed to pump waste water from the evaporator to evaporate the waste water of the evaporator between the exhaust port (410) formed in the evaporator (200) and the combustion chamber (400), a preheater (241) for preheating waste water, a heater (242) for heating the preheated waste water, and a device for evaporating the heated waste water The device is configured to include an evaporation means (240) composed of an evaporator (243); and a control unit (C) that controls the wastewater storage tank, evaporation tank, heating means, combustion chamber, combustion means, waste heat recovery means, and evaporation means.

[0025] delete

[0026] delete

[0027] delete Effects of the invention

[0029] The combustion type wastewater treatment system of the present invention, configured as described above, has the effect of preventing pollution of the air, water, and soil by heating the collected wastewater to generate steam as described in the purpose above, and then heating the steam again to burn and remove air pollutants harmful to the human body contained in the steam and releasing them into the atmosphere, while separately collecting and treating the sludge which is a precipitate. Brief explanation of the drawing

[0031] FIG. 1 is a schematic diagram showing the configuration of a combustion-type wastewater treatment system of the present invention. FIG. 2 is a configuration diagram of supplying a heat source to a heating means in a combustion-type wastewater treatment system of the present invention. FIG. 3 is a control block diagram of the combustion type wastewater treatment system of the present invention. Specific details for implementing the invention

[0032] The present invention relates to a combustion-type wastewater treatment system that separates and treats sludge, which is a precipitate contained in wastewater, and removes air pollutants harmful to the human body in the wastewater by burning them. An example of the invention is described below with reference to the attached drawings.

[0033] - under -

[0034] In the configuration of the combustion type wastewater treatment system of the present invention, the wastewater storage tank (100) is a tank for storing wastewater, and in one embodiment of the configuration of the wastewater storage tank (100), a drain port (110) is installed at the bottom, and in the wastewater storage tank (100) where the drain port is installed, a stirring means (120) is installed to neutralize the wastewater by adding a neutralizing agent and stirring when the wastewater in the wastewater storage tank is acidic or alkaline wastewater, and a limit switch (L / S) for detecting the wastewater level of the wastewater storage tank (100) is installed on one side of the top.

[0035] delete

[0036] The reason for installing a limit switch (L / S) in the wastewater storage tank (100) is to detect the level of wastewater in the wastewater storage tank (100).

[0037] And when the wastewater in the above wastewater storage tank (100) is acidic wastewater, one or more of the neutralizing agents caustic soda (NaOH), sodium carbonate (Na2CO3), and quicklime (Ca(OH)2) are mixed and added, and when it is alkaline wastewater, one or more of sulfuric acid (H2SO4) and hydrochloric acid (CHl) are mixed and added, and then the above stirring means (120) is operated so that the added neutralizing agent is quickly dissolved in the wastewater and the wastewater becomes neutralized wastewater.

[0038] In addition, the above stirring means (120) refers to a rotating blade, i.e., an impeller (122), that is connected to the shaft of the motor (121) and rotates together with the operation of the motor. When the motor is operated, the impeller rotates, and the neutralizing agent is rapidly dissolved in the wastewater to maintain the pH of the wastewater within the range of 7±1.

[0039] And the above drain port (110) is a place for draining sludge and residual wastewater present in the wastewater storage tank (100) when the wastewater storage tank (100) is not in use, and it is preferable that a valve for opening and closing the drain port (110) is installed in the drain port (110) that performs such an function.

[0040] The evaporation tank (200) of the present invention is a place that receives wastewater from the wastewater storage tank (100) through a transfer line (L-1) in which a transfer pump (P-1) is installed, and a drain port (210) having a valve is installed at the bottom, and a sludge discharge means (220) for discharging sludge is installed at the drain port, and a wastewater supply port (230) is formed at the top to receive wastewater supplied from the transfer line (L-1).

[0041] One embodiment of the sludge discharge means (220) installed in the drain port (210) is configured as a sludge discharge line (L-3) equipped with a pump (P-3) that extracts sludge from the evaporation tank (200) and supplies it to the sludge storage tank (700).

[0042] However, it is preferable that the above-mentioned sludge discharge means (220) be operated when the combustion type wastewater treatment system of the present invention is not operating.

[0043] The reason for storing the sludge in the above evaporation tank (200) in the sludge storage tank (700) is to manage the sludge separately so as not to contaminate the soil or water quality as the sludge flows into the soil or sewage.

[0044] Meanwhile, a supply line (L-1) is installed between the evaporator (200) and the wastewater storage tank (100) to supply wastewater from the wastewater storage tank (100) to the evaporator (200), and a transfer pump (P-1) is installed in the supply line. A flow meter (F / M) is installed at a selected location on the supply line (L-1) to allow for the quantitative supply of wastewater from the wastewater storage tank (100) to the evaporator (200).

[0045] The heating means (300) of the present invention is installed on one side of the evaporator (200) and has the function of heating the wastewater in the evaporator to 80-90°C to generate steam.

[0046] A heating means (300) that performs the above-mentioned function is a burner, and in one embodiment of the burner, the configuration is composed of an oil supply means (310) that supplies oil, which is a combustion fuel, to the burner in a spray form as shown in FIG. 2, an ignition fuel supply means (320) that supplies an ignition fuel, which is either LPG or LNG, used to ignite the burner, an ignition fuel supply control means (330) that controls the ignition fuel supply pressure of the burner, and an air supply means (340) that supplies air (oxygen) from the atmosphere to the burner.

[0047] With the above configuration, the burner, which is the heating means (300), has the advantage of being able to automatically ignite and burn.

[0048] The above oil supply pump (310) is the combustion fuel for the burner, the above ignition fuel supply means (320) is the fuel for the initial ignition of the burner, the ignition fuel supply control means (330) supplies the pressure of the ignition fuel required for the burner to ignite, and the air supply means (340) supplies oxygen from the atmosphere so that the combustion of the burner is stable and continuous.

[0049] In addition, ignition by electricity may be achieved instead of using LPG or LNG fuel to ignite the burner.

[0050] And the combustion chamber (400) of the present invention is a place that receives steam generated from the evaporator (200), and has an exhaust port (410) formed on one side.

[0051] In addition, the steam generated in the above evaporator (200) is configured to be supplied to the combustion chamber (400) by an exhaust fan (E) installed in the steam transfer line (L-2).

[0052] Meanwhile, a combustion means (500) is installed on one side of the combustion chamber (400) to heat the steam in the combustion chamber (400) to 800-900°C to burn and remove harmful substances in the steam, and the gas from which the harmful substances have been burned and removed is exhausted through the exhaust port (410).

[0053] The combustion means (500) performing the above-mentioned function is a burner, and the configuration of one embodiment of the burner is as shown in FIG. 2, comprising an oil supply means (510) that supplies oil, which is a combustion fuel, to the burner in a spray form, an ignition fuel supply means (520) that supplies an ignition fuel, which is either LPG or LNG, used to ignite the burner, an ignition fuel supply control means (530) that controls the ignition fuel supply pressure of the burner, and an air supply means (540) that supplies air (oxygen) from the atmosphere to the burner.

[0054] With the above configuration, the burner, which is the combustion means (500), has the advantage of being able to automatically ignite and burn.

[0055] The above oil supply pump (510) is the combustion fuel for the burner, the above ignition fuel supply means (520) is the fuel for the initial ignition of the burner, the ignition fuel supply control means (530) supplies the ignition fuel by controlling the pressure required for the burner to ignite, and the air supply means (540) supplies oxygen from the atmosphere so that the combustion of the burner is stable and continuous.

[0056] In addition, ignition by electricity may be achieved instead of using LPG or LNG fuel to ignite the burner.

[0057] In addition, a waste heat recovery line (610), which is a waste heat recovery means (600) that recovers waste heat exhausted through the exhaust port (410) and supplies it to the evaporator (200), is installed between the exhaust port (410) formed in the combustion chamber (400) and the evaporator (200). A waste heat supply device (620) that supplies waste heat to the evaporator (200) is installed in the waste heat recovery line (610) to supply waste heat exhausted through the exhaust port (410) to the evaporator (200), thereby minimizing the energy consumed by the heating means (300) and saving energy.

[0058] In addition, a separate evaporation means (240) is installed between the evaporation tank (200) and the exhaust port (410) of the combustion chamber (400) to evaporate the wastewater of the evaporation tank (200) and supply it to the exhaust port (410), thereby enabling efficient treatment of the wastewater.

[0059] The above-described evaporation means (240) is configured with a preheater (241) for preheating wastewater in a transfer line (L-4) where a pump (P-4) for pumping wastewater from the evaporation tank (200) is installed, a heater (242) for heating the preheated wastewater, and an evaporator (243) for evaporating the heated wastewater.

[0060] The reason for installing an evaporation means (240) with the above configuration is to efficiently treat wastewater by burning and removing harmful components in the steam together with the combustion chamber (400) of the wastewater of the evaporation tank (200).

[0061] However, if the combustion means (500) installed in the combustion chamber (400) malfunctions, the wastewater may be treated by operating only the evaporation means (240).

[0062] And the reason for heating the steam in the above combustion chamber (400) to 800-900°C with the combustion means (500) is to burn and remove air pollutants harmful to the human body contained in the steam and to release only the remaining gas into the atmosphere.

[0063] The combustion type wastewater treatment system of the present invention, as described above, has the advantage of preventing pollution of the air, water, and soil by heating the collected wastewater to generate steam as described in the above effect, and then heating the steam again to burn and remove air pollutants harmful to the human body contained in the steam and releasing them into the atmosphere, while separately collecting and treating the sludge which is a precipitate. Explanation of the symbols

[0065] 100 : Wastewater Treatment Tank 110 : Drain Port 120: Stirring means 121: Motor 122 : Impeller 200 : Evaporator 210: Drain port 220: Sludge discharge means 230: Wastewater supply port 240: Evaporation means 241 : Preheater 242 : Heater 243 : Evaporator 300 : Heating means 310: Oil supply pump 320: Ignition fuel supply means 330 : Compressed air supply means 400 : Combustion chamber 410 : Exhaust port 500 : Combustion means 510: Oil supply pump 520: Ignition fuel supply means 530 : Compressed air supply means 600 : Waste heat recovery means 610 : Waste heat recovery line 620 : Waste heat supplier 700 : Sludge storage C : Control unit E: Exhaust fan L / S: Limit switch F / M : Flow meter

Claims

Claim 1 A wastewater storage tank (100) having a drain port (110) installed at the bottom, a stirring means (120) installed inside to neutralize the wastewater by adding a neutralizing agent and stirring when the wastewater is acidic or alkaline, and a limit switch (L / S) installed on one side of the top to detect the wastewater level; an evaporation tank (200) receiving wastewater from the wastewater storage tank through a transfer line (L-1) equipped with a transfer pump (P-1), having a drain port (210) with a valve installed at the bottom, a sludge discharge means (220) installed in the drain port to discharge sludge, and a wastewater supply port (230) formed at the top to receive wastewater supplied from the transfer line; a burner installed on one side of the evaporation tank to heat the wastewater inside the evaporation tank to 80-90°C to generate steam, an oil supply means (310) that supplies oil, which is a combustion fuel, in a spray form, and LPG used to ignite the burner. A heating means (300) comprising an ignition fuel supply means (320) for supplying an ignition fuel which is either LPG or LNG, an ignition fuel supply control means (330) for controlling the ignition fuel supply pressure of the burner, and an air supply means (340) for supplying air (oxygen) from the atmosphere to the burner; a combustion chamber (400) having an exhaust port (410) installed on one side, which receives and burns water vapor generated in the evaporator through a transfer line (L-2) equipped with an exhaust fan (E); and a burner that heats the water vapor in the combustion chamber to 800-900°C to burn and remove harmful substances in the water vapor, comprising an oil supply means (510) for supplying oil, which is a combustion fuel, in a spray form, an ignition fuel supply means (520) for supplying an ignition fuel which is either LPG or LNG used to ignite the burner, and an ignition fuel supply control means (530) for controlling the ignition fuel supply pressure of the burner.Combustion means (500) comprising an air supply means (540) that supplies air (oxygen) from the atmosphere to a burner; waste heat recovery means (600) in which a waste heat recovery line (610) is connected and installed between the exhaust port of the combustion chamber and the evaporator to recover waste heat exhausted through the exhaust port and supply it to the evaporator, and a waste heat supply device (620) that supplies waste heat to the evaporator is installed in the waste heat recovery line; a sludge storage tank (700) connected and installed to the sludge discharge means (220) to extract and store sludge within the evaporator; a transfer line (L-4) in which a pump (P-4) is installed to pump waste water from the evaporator to evaporate the waste water of the evaporator between the exhaust port (410) formed in the evaporator (200) and the combustion chamber (400), a preheater (241) for preheating waste water, a heater (242) for heating the preheated waste water, and a device for evaporating the heated waste water A combustion-type wastewater treatment system characterized by a configuration comprising: an evaporation means (240) composed of an evaporator (243); and a control unit (C) for controlling the wastewater storage tank, evaporation tank, heating means, combustion chamber, combustion means, waste heat recovery means, and evaporation means. Claim 2 A combustion-type wastewater treatment system according to claim 1, characterized in that a flow meter (F / M) is installed at a selected location of the transfer line (L-1). Claim 3 In paragraph 2, the combustion type wastewater treatment system is characterized in that the stirring means (120) is composed of a motor (121) installed on the wastewater storage tank and an impeller (122) installed on the shaft of the motor to stir the wastewater. Claim 4 delete Claim 5 A combustion-type wastewater treatment system according to claim 1, wherein the sludge discharge means (220) is configured to discharge the sludge in the evaporation tank to a sludge storage tank (700) through a sludge discharge line (L-3) in which a pump (P-3) is installed. Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 delete

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