KR102431605B1 - Non-degradable Waste Water Treatment Apparatus - Google Patents

Abstract

The present invention relates to a technology related to a recalcitrant wastewater treatment apparatus capable of more efficiently reducing the COD of recalcitrant wastewater, comprising: a housing having an inlet, an outlet and an exit door; an MF filter module through which wastewater introduced through the inlet passes; a UF filter module connected to the rear end of the MF filter module; Doedoe connected to the rear end of the UF filter module, such that a photocatalytic nanofilter containing nano photocatalyst particles is coupled to a hollow tube-shaped ceramic support, a UV lamp is disposed in the center of the support, and the support is passed through the support at the bottom of the support a photocatalytic reaction module to which a discharge connector for discharging the filtered treated water is coupled; and an RO filter module into which the treated water discharged from the photocatalytic reaction module is introduced.

Description

Non-degradable Waste Water Treatment Apparatus

The present invention relates to a recalcitrant wastewater treatment device capable of more efficiently purifying recalcitrant wastewater.

Environmental pollution is emerging as a big problem due to rapid industrial development, and various alternatives have been proposed to solve this environmental pollution problem. Water pollution is aggravating, and in the long term, it is expected that the supply of drinking water as well as various industrial water will be disrupted.

All living things on Earth, including humans, sustain life based on the existence of water. In other words, if clean water is not secured, no living organisms will be able to thrive on earth in the future, so it is urgent to develop a technology that can effectively treat the inevitably polluted water while not polluting water resources.

Fossil fuels, which contributed greatly to industrialization, are still an important energy source, but the petrochemical industry using petroleum has a stigma that causes environmental pollution.

That is, synthetic polymer compounds using petroleum as raw materials are hardly decomposable substances that do not exist in nature, and become a major cause of water pollution due to wastewater generated after use, and the treatment problem is seriously emerging.

Industrial wastewater that emits organic matter from the petroleum industry, livestock, paper industry, dye industry, various laboratories, etc., and organic wastewater generated from nuclear power plants in the energy industry are lubricating oil used in rotating equipment, and chemicals that prevent corrosion of heat exchangers and systems. In nuclear power plants, the removal of organic matter is not reflected in the wastewater treatment system, so it is difficult to treat it.

The dye contained in a large amount in the dyeing wastewater is a difficult-to-decompose material, and research on the treatment method is in progress.

Removal of organic matter using microorganism immobilization, removal of organic matter in wastewater using ultrafiltration membrane, oxidation process using H2O2, and COD reduction due to organic matter using Photo-Fenton method are being studied.

However, since wastewater containing organic matter is a hard-to-decompose material with high COD, when it is discharged into a river, it becomes a causative material of water pollution that can hardly be expected to be naturally purified.

In addition, the activated sludge method is mainly used as a method for treating residual organic matter in wastewater, but due to operational problems, it is diluted and discharged in an insufficiently decomposed state.

Republic of Korea Patent Publication No. 10-2002-0060106

Accordingly, an object of the present invention is to provide an integrated recalcitrant wastewater treatment apparatus capable of efficiently treating recalcitrant wastewater.

In addition, the present invention intends to provide a recalcitrant wastewater treatment device in which major components are arranged inside a housing such as a single container box in consideration of portability and workability for installation.

The recalcitrant wastewater treatment apparatus of the present invention for achieving the above object includes: a housing having an inlet, an outlet, and an access door; an MF filter module through which wastewater introduced through the inlet passes; a UF filter module connected to the rear end of the MF filter module; Doedoe connected to the rear end of the UF filter module, such that a photocatalytic nanofilter containing nano photocatalyst particles is coupled to a hollow tube-shaped ceramic support, a UV lamp is disposed in the center of the support, and the support is passed through the support at the bottom of the support a photocatalytic reaction module to which a discharge connector for discharging the filtered treated water is coupled; and an RO filter module into which the treated water discharged from the photocatalytic reaction module is introduced.

Preferably, the photocatalytic reaction module includes: a chamber connected to the rear end of the UF filter module and the front end of the RO filter module; A plurality of fastening parts are installed on the bottom surface of the chamber so that the lower end of the support can be screwed together, and the fastening parts are communicated through a flow path and are connected to an outlet connected to the front end of the RO filter module. ; a support having a coupling means corresponding to the coupling part at the lower end; a cover coupled to the upper end of the chamber to seal the chamber; a UV lamp having an upper end coupled to a lower surface of the cover and inserted into the center of the support; a circulation line having both ends connected in the vertical direction to the outer surface of the chamber to allow the wastewater introduced into the chamber to flow; and a pump installed on the circulation line to forcibly circulate the wastewater.

In addition, preferably, the MF filter module, the UF filter module, the photocatalytic reaction module, and the RO filter module are configured in parallel by two or more, a flow meter is installed between each neighboring module, and the flow direction of wastewater using an electromagnetic valve It is characterized in that it can be controlled.

Preferably, the photocatalytic nanofilter coupled to the ceramic support includes pores having an average diameter of 20 to 200 nm and has a thickness of 100 μm or more, and the photocatalyst is TiO ₂ , ZIF-8, TiO _{2 /} ZIF It is characterized in that it is any one of -8.

According to the hardly decomposable wastewater treatment apparatus according to the present invention, since it is provided integrally in the form of an integrated module, portability and constructability are easy, and maintenance is convenient.

And in the present invention, the MF filter module, the UF filter module, the photocatalytic reaction module, and the RO filter module are sequentially connected so that the recalcitrant wastewater can be treated very efficiently in stages.

1 is a conceptual diagram of a non-degradable wastewater treatment apparatus according to the present invention.
Figure 2 is a modified embodiment of the recalcitrant wastewater treatment apparatus according to the present invention.

Hereinafter, a more detailed description will be given of the hardly decomposable wastewater treatment apparatus according to the present invention, with reference to the accompanying drawings. However, the presented drawings and detailed descriptions thereof illustrate one possible example according to the technical idea of the present invention, and the technical protection scope of the present invention is not limited thereto.

1 is a conceptual diagram of a recalcitrant wastewater treatment apparatus according to the present invention, and FIG. 2 is a modified exemplary view of a recalcitrant wastewater treatment apparatus according to the present invention.

As shown, the non-degradable wastewater treatment apparatus according to the present invention includes a housing 100 , an MF filter module 200 , a UF filter module 300 , a photocatalytic reaction module 400 , and an RO filter module 500 . .

In particular, in the present invention, it is possible to effectively treat the COD of the recalcitrant wastewater through a continuous purification treatment using a plurality of filtering means arranged sequentially.

Specifically, the recalcitrant wastewater treatment apparatus of the present invention is installed in one housing 100 having an internal space such as a container, so that transportability, constructability, and maintenance are convenient.

An inlet 110 is formed on one side of the housing 100 , an outlet 120 is formed on the other side, and one or more entrance doors (not shown) through which a worker can enter the housing 100 are provided.

The wastewater to be treated is introduced through the inlet 110 and enters the MF filter module 200, and the MF filter module 200 primarily controls the turbidity by removing contaminants with relatively large particles.

The UF filter module 300 is connected to the rear end of the MF filter module 200, and the UF filter module 300 can remove foreign substances having a particle size of 50 nm or more, and in particular, high molecular weight organic matter or various microorganisms. have.

The incoming wastewater passes through the MF filter module 200 and the UF filter module 300 sequentially and then is supplied to the photocatalytic reaction module 400 .

That is, the photocatalytic reaction module 400 has a chamber 410 , and the chamber 410 is connected to the rear end of the UF filter module 300 and the front end of the RO filter module 500 to be described later.

The discharge connector 420 is installed on the bottom surface of the chamber 410, the discharge connector 420 is coupled to form the bottom of the chamber 410, a plurality of fastening parts 421 to the upper surface of the discharge connector 420 is formed, and the fastening part 421 has a concave groove shape, and a female screw is formed on the inner diameter surface to form the fastening part 421 . In addition, the fastening parts 421 communicate with each other through a flow path and are connected to one water outlet 422 . The water outlet 422 formed in the discharge connector 420 is connected to the front end of the RO filter module 500 .

A plurality of supports 430 may be installed inside the chamber 410 , and a coupling means 431 corresponding to the fastening portion 421 is formed at a lower end of each support 430 . As a female screw is used as the fastening part 421, the coupling means 431 formed at the lower end of the support 430 is made to be a male screw, so that the support 430 can be easily mounted to the fastening part 421 by a screwing method. let it be

The number of fastening parts 421 formed on the support 430 and the discharge connector 420 may be appropriately modified in consideration of the processing capacity or the size of the chamber 410 .

The support 430 installed in the chamber 410 has a hollow tube shape, and is a porous support 430 made of a ceramic material, but a filter including nano photocatalyst particles is coupled thereto.

As a photocatalyst, TiO ₂ , ZIF-8, TiO _{2 /} ZIF-8, etc. are used, and a polyvinylidene fluoride (PVDF) polymer solution formed by a non-solvent induced phase separation method is used to bind to the ceramic support.

More specifically, the nanofilter including the photocatalyst coupled to the ceramic support includes pores having an average diameter of 20 to 200 nm, and has a thickness of 100 μm.

The support 430 has a hollow tube shape with an empty center, and the UV lamp 440 is installed in the center of the support 430 to be upright. As the photocatalyst is activated by the ultraviolet rays generated from the UV lamp 440, the COD contained in the wastewater is decomposed.

In order to install the UV lamp 440 inside the chamber 410 , a cover 450 that can seal the chamber 410 is coupled to the upper portion of the chamber 410 , and the UV lamp 440 is provided on the lower surface of the cover 450 . so as to be coupled by inserting the upper end of the , and the UV lamp 440 is turned on as electricity is supplied.

A plurality of UV lamps 440 are coupled to the cover 450 , and each UV lamp 440 is inserted into the center of the corresponding support 430 .

On the other hand, both ends are connected in the vertical direction to the outer surface of the chamber 410 is provided with a circulation line 460 to allow the wastewater introduced into the chamber 410 to flow. Preferably, two or more circulation lines 460 may be installed symmetrically, and the wastewater introduced into the chamber 410 flows smoothly up and down through the circulation line 460 so that the wastewater supports the support 430 . Penetrates from the outer surface to the inside to ensure smooth fluidity.

More preferably, the circulation line 460 is provided with a pump 470 to forcibly circulate the wastewater, so that wastewater flows from one end of the circulation line 460 toward the other end and is forced to be discharged, so that the wastewater circulates more smoothly. make it possible

As the wastewater passes through the photocatalytic reaction module 400, organic matter is smoothly decomposed by the action of the photocatalyst, and the treated water is selectively introduced into the RO filter module 500 according to the purpose of using the treated water. The RO filter module 500 removes ionic substances and finally passes only pure water, so that wastewater containing difficult-to-decompose substances can be purified cleanly.

The treated water passing through the RO filter module 500 is finally discharged through the outlet 120 formed in the housing 100 .

On the other hand, the flow rate on the pipe between the MF filter module 200 and the UF filter module 300, between the UF filter module 300 and the photocatalytic reaction module 400, and between the photocatalytic reaction module 400 and the RO filter module 500 By installing a flowmeter (A) that can check the flow rate of the fluid, it can be configured to generate an alarm when an appropriate level of flow rate is not formed.

In addition, the MF filter module 200, the UF filter module 300, the photocatalytic reaction module 400 and the RO filter module 500 constituting the present invention are prepared in parallel in two or more, respectively, and the electromagnetic valve (E) is can be used to enable selective use.

By configuring each module two in parallel, when there is a problem in one module or replacement is required, wastewater is controlled to flow to the other module without interruption of wastewater treatment, and then the module that needs replacement can be dealt with. can

That is, when the flow meter (A) installed between the MF filter module 200 and the UF filter module 300 generates an alarm, there is an abnormality in the MF filter module 200, and the second MF filter not in use Control the electromagnetic valve (E) so that wastewater flows to the module, and if the flowmeter (A) installed between the UF filter module 300 and the photocatalytic reaction module 400 generates an alarm, the wastewater flows to the second UF filter module This enables continuous wastewater treatment without interruption.

Meanwhile, the performance test results of the recalcitrant wastewater treatment apparatus according to the present invention are shown in Table 1 below.

The comparative example device was configured to consist of MF filter module - UF filter module - RO filter module, and the embodiment device was configured by MF filter module - UF filter module - photocatalytic reaction module - RO filter module.

comparative example Example
COD enemy 42ppm 42ppm treated water 40.4ppm 18.6ppm
TDS enemy 6090ppm 6148ppm treated water 718ppm 366ppm

As can be seen in Table 1, it can be seen that the COD and TDS of wastewater can be effectively reduced by using the non-degradable wastewater treatment apparatus according to the present invention as compared with the comparative example.

As described above, according to the hardly decomposable wastewater treatment apparatus according to the present invention, the MF filter module, UF filter module, photocatalytic reaction module, and RO filter module with different functions are sequentially arranged to be installed in one housing, so that the integrated high-performance wastewater The processing apparatus can be provided compactly.

In addition, by configuring two or more of each filter element in parallel, continuous wastewater treatment is possible without interruption by controlling the wastewater to flow to an unused filter even when replacement of any one filter is required during use.

The present invention is a useful technology that can be utilized for various wastewater treatment, especially for reducing the difficult-to-decompose COD.

100: housing
110: inlet 120: outlet
200: MF filter module 300: UF filter module
400: photocatalytic reaction module
410: chamber 420: exhaust connector
421: fastening part 422: water outlet
430: support 431: coupling means
440: UF lamp 450: cover
460: circulation line 470: pump
500: RO filter module
A: Flowmeter
E: electromagnetic valve

Claims (4)

As a water treatment device for recalcitrant wastewater treatment,
a housing having an inlet, an outlet and an access door;
an MF filter module through which wastewater introduced through the inlet passes;
a UF filter module connected to the rear end of the MF filter module;
Doedoe connected to the rear end of the UF filter module, such that the photocatalyst nanofilter comprising nano photocatalyst particles is coupled to the hollow tube-shaped ceramic support, a UV lamp is disposed at the center of the ceramic support, and the ceramic support is at the bottom of the A photocatalytic reaction module coupled to a discharge connector for discharging the filtered water while passing through the ceramic support;
Including; RO filter module into which the treated water discharged from the photocatalytic reaction module is introduced;
The photocatalytic reaction module,
a chamber connected to the rear end of the UF filter module and the front end of the RO filter module;
A plurality of fastening parts are installed on the bottom surface of the chamber so that the lower end of the ceramic support can be screwed together, and the fastening parts are communicated through a flow path and are connected to an outlet connected to the front end of the RO filter module. exhaust connector;
the ceramic support having a coupling means corresponding to the coupling part at a lower end;
a cover coupled to the upper end of the chamber to seal the chamber;
the UV lamp having an upper end coupled to a lower surface of the cover and inserted into the center of the ceramic support;
a circulation line having both ends connected in the vertical direction to the outer surface of the chamber to allow the wastewater introduced into the chamber to flow;
a pump installed on the circulation line to forcibly circulate the wastewater;
The MF filter module, UF filter module, photocatalytic reaction module, and RO filter module are configured in parallel by two or more, a flow meter is installed between each neighboring module, and an alarm function is included in the flow meter to generate an alarm A recalcitrant wastewater treatment device, characterized in that it is possible to control the flow direction of wastewater by using an electromagnetic valve. delete delete The method of claim 1,
The photocatalytic nanofilter coupled to the ceramic support includes pores having an average diameter of 20 to 200 nm, and has a thickness of 100 μm or more, and the photocatalyst is TiO ₂ , ZIF-8, TiO _{2 /} ZIF-8 A recalcitrant wastewater treatment device, characterized in that any one.

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