KR101756266B1 - Wastewater treatment system for simultaneous removal of color, phosphates and e. coli, and processing method thereof - Google Patents

Abstract

The present invention relates to a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli, and a treatment method thereof.
According to the present invention, there is provided a wastewater treatment system for removing chromaticity, total phosphorus and E. coli simultaneously, comprising: a bioreactor in which wastewater is introduced and stored; A biomass supplied to the bioreactor and reacting with wastewater stored in the bioreactor; A membrane filtration unit for filtering and discharging the treated water generated by the decomposition of the wastewater after the wastewater and the biomass react with each other; An ultraviolet shielding membrane disposed on the upper portion of the bioreactor and shielding the ultraviolet light to prevent the biomass from being damaged by irradiation with ultraviolet light; And a heat exchanger for uniformly controlling the temperature inside the bioreactor, wherein the biomass uses light emitted from the light source as an energy source and at the same time, the carbon dioxide mixed with the air mixed in the diffuser provided in the bioreactor is used as a carbon source Thereby culturing in the bioreactor.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment system for removing chromaticity, total phosphorus, and coliform bacteria at the same time,

The present invention relates to a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli, and more particularly, to a process for treating chromaticity, phosphorus phosphorus and coliforms contained in wastewater, The present invention relates to a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli, which can efficiently purify wastewater, and a treatment method thereof.

Due to the recent industrialization and urbanization, many pollutants have been generated, and these pollutants have been directly introduced into watersheds, which gradually deteriorated the water environment. In addition, due to the effects of climate change, the global village has become increasingly concerned about the water shortage problem, thus increasing interest in water conservation and water reuse, and gradually strengthening the water quality standards released to the rivers.

However, existing wastewater treatment plants have been increasingly addressing water pollution and water shortages, and have been limited in meeting increasingly stringent water quality standards. Especially, the shortage of the river slope as Korea, the distinction between the wet season and the dry season became clear, and the problem became more serious when the water shortage was serious and the installation space of the wastewater treatment device was insufficient.

Generally, Rotating Biological Contact and Activated Sludge Process are the methods of decomposing pollutants through the wastewater treatment device.

Here, the Rotating Biological Contact is a method of treating sewage using biofilm, in which microorganisms are adhered to the surface of a rotating disk, and the biological action of the biofilm decomposes and treats contaminants in the wastewater.

That is, it is a biological wastewater treatment method in which a plastic plate made up of tens to hundreds of units is installed in a submerged state in water, and then slowly rotated, thereby purifying sewage water using aerobic organisms naturally occurring.

As the disk rotates, a microorganism film is formed on the surface of the disk. When the disk is continuously rotated, the microorganisms ingest the organic matter. When the disk comes out of the water, the oxygen in the air is transferred. Such a rotary disk method can be used for domestic wastewater treatment and the like because the entire apparatus is small and simple in operation.

The Activated Sludge Process is a biological method used for wastewater treatment. Biological wastewater is treated by mixing wastewater with activated sludge and mixture and blowing in air. At this time, The waste water is separated from the treatment wastewater and discarded, but a portion is returned to the treatment apparatus as necessary.

In addition, since the microorganisms are propagated by blowing air into the wastewater containing organic matter, the generated sludge generates flocculent flocculent rich in adsorbability and can obtain clear treatment water, which is effective for organic wastewater having a high biological oxygen demand. Modification methods of the activated sludge method include strain aeration, stepwise aeration, bioabsorption, fully mixed activated sludge, complete oxidation, and contact stabilization.

On the other hand, in order to treat wastewater containing a large amount of pollutants such as refractory organic matter, it is usual to perform biological treatment after chemical treatment.

In order to treat wastewater, the wastewater is neutralized with acids and alkalis, and then various organic and inorganic coagulants are used to remove the BOD, COD, chromatic and other heavy metals by adsorption, precipitation or floatation. And the removal efficiency of BOD, COD and chromaticity can be increased by such a chemical treatment process.

Thereafter, the biological treatment is carried out at a level of emission allowance level. Such a biological treatment method may be a method of removing organic substances in wastewater by using aerobic microorganisms or anaerobic microorganisms.

However, if it is difficult to observe the emission limit even after the biological treatment, the biological treatment process should be repeated or the secondary chemical treatment should be carried out. Such a conventional wastewater treatment method requires a large amount of chemicals and takes too much time for biological treatment Therefore, there is a problem that it is practically difficult to obtain the efficiency of removing organic substances above a certain level due to a large burden on the facility cost and operation to reach the emission allowance standard.

In other words, conventional TP removal method through biological treatment after conventional chemical treatment can expect stable treatment efficiency, but separate chemical injection and agitation facilities should be established and additional operation such as drug cost and sludge processing cost Cost is consumed and can cause the generation of inorganic waste.

In addition to the conventional ozone oxidation (O ₃ ) process, the removal of chromaticity attributable to the water-repellant organic material can be performed by a high-level oxidation process (for example, O ₃ + UV, O ₃ + H ₂ O ₂ Etc.) are accepted as the most common level of technology at present, however, there is a problem that a high oxidizing agent (or energy) is required due to very radical radical consumption in the treatment of wastewater containing mostly alkalinity.

In addition, almost all of the wastewater treatment water is subjected to the final disinfection treatment separately from the altitude oxidation process. However, the inexpensive chlorine disinfectant used in the past has been largely limited in its use due to the generation of the hazardous disinfection by-products, Ultraviolet disinfection can only be applied to the case of effectively removing suspended solids and color inducing substances which can physically block / absorb ultraviolet ray transmission in the wastewater before the disinfection process.

Therefore, in order to remove chromaticity, total phosphorus, and E. coli from conventional wastewater, it is not possible to obtain satisfactory treatment water only by the operation of a single biological or physicochemical process, or the cost is not economical. In the case of overseas wastewater treatment apparatus, And / or thermochemical means, which are difficult to introduce in Korea.

Accordingly, the inventor of the present invention has been studying a method of overcoming the limitation of the energy / cost intensive technology of the conventional wastewater treatment apparatus, and it is possible to effectively remove chromaticity, total phosphorus, and E. coli from the wastewater by using only the biological treatment process applying the biomass growth characteristics And the present invention has been completed.

Domestic Registration No. 10-1344372 (registered on December 17, 2013)

The present invention relates to a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli that can simultaneously treat chromaticity, phosphate phosphorus, and coliforms contained in wastewater in a single reaction tank to reduce energy and cost and efficiently purify wastewater. And a method for processing the same.

In addition, the present invention does not require chlorine-based chemical injection or ultraviolet ray irradiation, which has been widely used for removing E. coli from biological treatment wastewater, unlike the phosphate removal method using chemical or electrochemical application techniques, A wastewater treatment system for removing chromaticity, total phosphorus, and E. coli that do not require electric energy at the same time, and a treatment method thereof.

Further, the present invention differs from conventional high oxidation processes (e.g., O ₃ , O ₃ + UV, O ₃ + H ₂ O _2, etc.) for chromaticity removal due to the decomposable organic material And a method for treating the wastewater, which does not require a separate process combination, and simultaneously removes chromaticity, total phosphorus, and E. coli that do not require air injection from outside in order to maintain the dissolved oxygen concentration in the bioreactor.

The various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to the present invention, there is provided a wastewater treatment system for removing chromaticity, total phosphorus and E. coli simultaneously, comprising: a bioreactor in which wastewater is introduced and stored; A biomass supplied to the bioreactor and reacting with wastewater stored in the bioreactor; A membrane filtration unit for filtering and discharging the treated water generated by the decomposition of the wastewater after the wastewater and the biomass react with each other; An ultraviolet shielding membrane disposed on the upper portion of the bioreactor and shielding the ultraviolet light to prevent the biomass from being damaged by irradiation with ultraviolet light; And a heat exchanger for uniformly controlling the temperature inside the bioreactor, wherein the biomass uses light emitted from the light source as an energy source and at the same time, the carbon dioxide mixed with the air mixed in the diffuser provided in the bioreactor is used as a carbon source To be cultivated in the bioreactor.

Under the condition that air is mixed into the bioreactor including the wastewater and the biomass, and natural light or artificial light is not irradiated or a light shielding phenomenon occurs due to inter-biomass interferences or the light transmittance is limited, Biodegradable organic materials from wastewater can be used as an energy source and carbon source to remove chromaticity, total nitrogen (TN), total phosphorus (TP), and E. coli and reduce chemical oxygen demand (COD).

The biomass may be a Scenedesmus species sp . ), Aqua Sat des mousse species (Acutodesmus sp.) And Chlorella species (Chlorella sp . ), And said at least one species selected from the group consisting of Scenedesmus sp . ) . quadricauda, acutus , obliquus, and bijuga , and the Acutodesmus species ( Acutodesmus sp . ) Include obliquus , and chlorella species (Chlorella sp.) May include vulgaris .

As the ultraviolet shielding film, a film containing at least one ultraviolet absorber selected from the group consisting of benzotriazoles, benzophenones, salicylic acids and cyanoacrylates is used. The ultraviolet shielding film may be formed by coating a solution containing an ultraviolet absorber on a base film formed of any one selected from the group consisting of PET, PC and PMMA to prepare a separate ultraviolet shielding film, And can be formed by attaching to the upper part.

The biomass and the artificial light are arranged inside the bioreactor at a predetermined interval and fixed in the vertical direction to react biologically with the wastewater supplied to the bioreactor. And the artificial light is cultivated in the bioreactor using artificial light as an energy source at night, and the artificial light is electrically connected to a condensing device for condensing natural light, and a storage device for converting and storing the light energy of the condensing device into electric energy .

In order to prevent the biomass from being damaged by irradiation of ultraviolet rays to the biomass, an ultraviolet shielding membrane is disposed around the biomass located inside the duct, And the biomass is fixedly disposed inside the tubular bioreactor and can be biologically reacted with the wastewater supplied to the bioreactor by the transfer pump.

In addition, the method of treating wastewater according to the present invention for removing chromaticity, total phosphorus and E. coli simultaneously includes the steps of injecting wastewater into a biological reactor; Reacting the biomass with wastewater in the bioreactor; Increasing the pH of the wastewater reacted with the biomass and removing chromaticity, total phosphorus (TP) and E. coli from the wastewater; Precipitating the biomass; And a step of filtering and discharging the treated water generated by decomposition of the wastewater after the wastewater is reacted with the biomass in the bioreactor, wherein the pH of the wastewater reacted with the biomass is increased, In the step of removing chromaticity, total phosphorus (TP) and E. coli, light energy of natural light is irradiated to the bioreactor only during a day, and under the condition that air and carbon dioxide are injected from the diffuser into the bioreactor, The biomass can be cultured and the chemical oxygen demand (COD) and total nitrogen (TN) can be reduced from the wastewater.

In the step of increasing the pH of the wastewater reacted with the biomass and removing the chromaticity, total phosphorus (TP) and E. coli from the wastewater, air is injected from the diffuser into the bioreactor, (COD) using algae using biodegradable organic materials as the carbon source from the wastewater under the condition that the light shielding phenomenon occurs due to interference between the biomass and the light transmittance is limited, The Scenedesmus sp . ), Acutodesmus species ( Acutodesmus sp . ) And chlorella species ( Chlorella sp . , And Scenedesmus sp. May include any one or more selected from the group consisting of S. quadricauda , acutus , obliquus, and bijuga , Acutodesmus sp . ) Includes obliquus , chlorella species ( Chlorella sp . ) May include vulgaris .

The details of other embodiments are included in the detailed description.

In the wastewater treatment system for removing chromaticity, total phosphorus and E. coli according to the present invention, the chromaticity, phosphate phosphorus, and coliform bacteria contained in the wastewater can be simultaneously treated in a single reaction tank to reduce energy and cost and efficiently purify wastewater .

In addition, the wastewater treatment system for removing chromaticity, total phosphorus, and E. coli according to the present invention does not require chlorine-based chemical injection or ultraviolet irradiation widely used for removing E. coli from biological treatment water, Unlike the phosphorous phosphorus removal method, no separate chemicals or high-power electrical energy is required.

In addition, the wastewater treatment system for simultaneously removing chromaticity, total phosphorus and E. coli according to the present invention can be applied to a conventional high oxidation process (for example, O ₃ , O ₃ + UV, O ₃ + H ₂ O ₂ ), it is not necessary to use a large amount of electric power or a separate process combination, and it is not necessary to inject air from outside in order to maintain the dissolved oxygen concentration in the bioreactor.

It will be appreciated that embodiments of the technical idea of the present invention can provide various effects not specifically mentioned.

1 is a view showing a configuration of a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to an embodiment of the present invention.
FIG. 2 is a schematic view illustrating a process of treating a wastewater according to an embodiment of the present invention, in which a wastewater treatment system for removing color, total phosphorus, and E. coli simultaneously.
FIGS. 3A to 6 are graphs for explaining the effect of removing chromaticity, total phosphorus, and E. coli from wastewater according to an embodiment of the present invention.
FIG. 7 is a view showing the configuration of a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to a modification of the technical idea of the present invention.
FIG. 8 is a schematic view illustrating a process of processing wastewater by a wastewater treatment system for removing color, total phosphorus, and E. coli simultaneously according to a modification of the technical idea of the present invention.
9 is a view showing a configuration of a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to another modification of the technical idea of the present invention.
10 is a view showing a configuration of a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to another modification of the technical idea of the present invention.
FIG. 11 is a flowchart illustrating a method of processing wastewater by a wastewater treatment system for simultaneously removing color, total phosphorus, and E. coli according to an embodiment of the present invention.

Advantages and features of the present invention, and methods of accomplishing the same, will be apparent from and elucidated with reference to the embodiments described hereinafter in detail. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions may include plural expressions unless the context clearly dictates otherwise.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

Hereinafter, a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing a configuration of a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to an embodiment of the present invention. FIG. 2 is a graph showing the chromaticity, And a process of treating the wastewater with a wastewater treatment system for simultaneously removing E. coli.

1, a configuration of a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to an embodiment of the present invention will be described.

The wastewater treatment system 100 for simultaneously removing chromaticity, total phosphorus, and E. coli according to an embodiment of the present invention includes a biological reaction tank 110 into which wastewater is introduced and stored, A biomass 120 reacting with the wastewater stored in the biomass 110 and a membrane filtration unit 150 filtering and discharging the wastewater generated by the decomposition of the wastewater after the biomass 120 reacts with the wastewater .

The bioreactor 110 is a space for storing the wastewater supplied through the transfer pump 136 and biologically reacting with the biomass 120. The bioreactor 110 has a wastewater inlet Lt; / RTI >

That is, in the present invention, wastewater flowing into the bioreactor 110 refers to inflow water containing a large amount of nutrients (organic matter, inorganic matter, especially nitrogen, phosphorus, and E. coli) contaminated, Wastewater, manure, sewage, stormwater, livestock wastewater and industrial wastewater.

The bioreactor 110 may have an open top so that the wastewater and the biomass 120 may be exposed to the light source 104 including the artificial light 102 or the natural light 103. The light source unit 104 may intermittently use the artificial light 102 converted into natural sunshine or sunlight time electric energy.

Here, the bioreactor 110 is preferably a sludge blanket reactor (SBR) type.

A diffuser 114 may be provided at a lower portion of the bioreactor 110 and a stirring portion 116 may be provided at an intermediate portion of the bioreactor 110. Air and carbon dioxide can be supplied into the bioreactor 110 through the diffuser 114.

The agitating unit 116 is an immersion agitating device that allows the biological reaction in the bioreactor 110 and the biomass 120 to smoothly proceed, Can be settled to the lower part of the bioreactor (110).

The biomass 120 cultivated in the bioreactor 110 is discharged through a discharge port 112 (see FIG. 1) formed at the lower end of the bioreactor 110, And may be discharged to the biomass collection unit.

The biomass 120 may be biologically reacted with the wastewater fed into the bioreactor 110 and supplied to the bioreactor 110.

Here, the biomass 120 may be a Scenedesmus species sp . ), Acutodesmus species ( Acutodesmus sp . ) And chlorella species ( Chlorella sp . ), And the like. Here, the three or four des mousse species (Scenedesmus sp.) In the S. quadricauda, acutus, obliquus, it may include bijuga, the Mousse Aqua Sat des species (Acutodesmus sp . ) May include obliquus , and chlorella species ( Chlorella sp. ) May include vulgaris .

The biomass 120 may be formed by using light emitted from the light source 104 as an energy source and carbon dioxide mixed with air in a diffuser 114 provided in the bioreactor 110 as a carbon source, Can be cultured in the biological reaction tank 110.

As the amount of the biomass 120 is increased during the cultivation of the biomass 120, the chromaticity, total phosphorus (TP), and E. coli contained in the wastewater can be removed.

In addition, the biomass 120 of the above-described type is configured such that air is mixed into the bioreactor 110 including the wastewater and the biomass 120 through the diffuser 114 and the natural light 103 or Organic materials capable of being biodegradable from the wastewater under the condition that the artificial light 102 is not irradiated or the light shielding phenomenon occurs due to interference between the biomass 120 or the light transmittance is restricted for other reasons is used as an energy source and a carbon source (TN), total phosphorus (TP), and E. coli can be simultaneously removed and the chemical oxygen demand (COD) can be reduced.

For reference, the diffuser 114 is connected to an air supply device (not shown) to inject oxygen and carbon dioxide into the bioreactor 110.

The separation membrane filtration unit 150 is connected to the bioreactor 110 and is disposed on one side of the bioreactor 110. After the wastewater and the biomass 120 react with each other, The treated water can be filtered and discharged.

The separation membrane filtration unit 150 separates the treated water generated by the decomposition of the chromaticity, total nitrogen (TN), total phosphorus (TP), E. coli and wastewater in the bioreactor 110 into a transfer pump 152, And finally discharged. At this time, a wastewater transfer pipe (not shown) for connecting the transfer pump 152 and the separation membrane filtration unit 150 may be provided with a valve (not shown) for controlling the transfer amount of wastewater.

The treated water generated by the reaction of the biomass 120 with the wastewater in the bioreactor 110 flows into the membrane filtration unit 150 through the transfer pump 152 and flows into the membrane filtration unit 150, Can be discharged as it is.

Referring to FIG. 2, a description will be made of a process in which a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to an embodiment of the present invention processes wastewater.

The process of the wastewater treatment system 100 according to an embodiment of the present invention is such that when the wastewater supplied through the transfer pump 136 is stored in the bioreactor 110, (5 to 10% v / v) is supplied to the air through the diffuser 114 while the natural light 103 or the artificial light 102 converted into electric energy is supplied during the daylight hours as shown in (a) The biomass 120 is mixed and supplied to grow the biomass 120 using the agitator 116 so that the biomass 120 can sufficiently react with the wastewater.

In other words, the biomass 120 uses light as an energy source and simultaneously uses carbon dioxide as a carbon source in a daytime when the natural light 103 or the artificial light 102 is irradiated. The chromaticity, total phosphorus (TP) and E. coli Coli) can be removed. At this time, if the light shielding phenomenon occurs, the chemical oxygen demand (COD) and the total nitrogen (TN) can be reduced by using an organic substance which is biodegradable from wastewater by using algae as mentioned below.

In addition, at the sunset time, only air can be injected into the biological reactor 110 using the diffuser 114 connected to the air supply device as shown in FIG. 2 (b). In other words, as shown in Figs. 2A and 2B, light is not irradiated by the natural light 103 or the artificial light 102, or light interference phenomenon occurs due to interference between the biomass 120 The biomass 120 is cultivated using an organic material that is biodegradable from wastewater as an energy source and a carbon source so that the chemical oxygen demand (COD) contained in the wastewater is reduced and the chromaticity and total nitrogen (TN), total phosphorus (TP) and E. coli can be removed. At this time, since the biomass 120 uses oxygen to oxidize and decompose an organic substance, only air is injected into the biological reaction tank 110.

In the present invention, the processes of (a) and (b) of FIG. 2 are repeated to remove the chromaticity, total nitrogen (TN), total phosphorus (TP) and E. coli contained in the wastewater by the biomass 120 At the same time, the chemical oxygen demand (COD) can be reduced and precipitated to the lower part of the bioreactor 110.

The wastewater treatment system 100 according to an embodiment of the present invention can treat chromaticity, total nitrogen (TN), total phosphorus (TP) and E. coli contained in wastewater in a single bioreactor 110 The process can be simplified by reducing the chemical oxygen demand (COD) at the same time, and the color, total phosphorus (TP), and E. coli contained in the wastewater can be almost eliminated.

3A and 3B, the wastewater treatment system 100 according to an embodiment of the present invention may include an artificial light 102 using electrical energy converted at a night time or a natural light 103 The initial pH of the wastewater was 7.2 to 7.6, the color was 583 to 712 mg Pt-Co / L, and the initial pH of the wastewater was 7.2 to 7.6 when the upper wastewater water surface of the bioreactor 110 including the wastewater and the biomass 120 was continuously inspected. Total phosphorus (TP) 9.1 to 10.9 mg P / L, E. coli 3 × 10 ⁵ to 4 × 10 ⁶ Cells / mL, Chemical oxygen demand (COD) 120 to 148 mg O ₂ / 29 to 31 mg N / L can be obtained, so that color, total phosphorus (TP) and E. coli can be simultaneously removed from the wastewater in the single biological reactor 110.

4, the wastewater treatment system 100 according to an embodiment of the present invention includes a wastewater treatment system 100 for treating the upper wastewater water surface of the bioreactor 110 including wastewater and biomass 120 as natural light (COD) from the wastewater in the bioreactor 110 and the total amount of COD from the wastewater in the bioreactor 110 and the total amount of COD from the wastewater in the bioreactor 110, when carbon dioxide (10%) is injected through the diffuser 114 under the bioreactor 110, Removal of nitrogen (TN) and pH adjustment may be possible.

In addition, the conventional biological treatment method is not limited to nitrification (NH ₄ -N → NO ₂ -N → NO ₃ -N) and denitrification (NO ₃ -N → N ₂ ) in separate reaction vessels (or separate treatment means) 5, the removal of total nitrogen (TN) in the wastewater treatment system 100 according to an embodiment of the present invention may be achieved by a combination of inorganic nitrogen components in the wastewater (E.g., NH ₄ -N, NO ₂ -N, NO ₃ -N).

6 is experimental data showing the effects of biomass, wastewater, and solid-liquid separation in the bioreactor 110 of the wastewater treatment system 100 according to an embodiment of the present invention. 6, the initial turbidity is 219 NTU. In the wastewater treatment system 100 according to an embodiment of the present invention, the flow of the turbid solution in the bioreactor 110 is stopped and the biomass Lt; RTI ID = 0.0 > 120). ≪ / RTI >

The wastewater treatment system 100 according to an embodiment of the present invention does not require an external organic carbon source used for denitrification in a conventional biological treatment process and can remove TP (total phosphorus) using chemical or electrochemical application technology Unlike the method, there is no need to use a separate chemical agent or high-output electrical energy.

The wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to an embodiment of the present invention may be modified in various ways to increase the effect of simultaneously removing chromaticity, total phosphorus, and E. coli of wastewater.

FIG. 7 is a view showing a configuration of a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to a modification of the technical idea of the present invention. FIG. 8 is a graph showing the chromaticity, And a process of treating the wastewater with a wastewater treatment system for simultaneously removing E. coli.

Meanwhile, the wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to one modification of the technical idea of the present invention includes a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to one embodiment, However, only constructions added for convenience and clarity will be described below

In the embodiment of the technical idea of the present invention and in one modification, the same reference numerals denote the same components, and the same function is performed.

7 and 8, a wastewater treatment system 100 for simultaneously removing chromaticity, total phosphorus, and E. coli according to one modification of the technical idea of the present invention includes a biological reaction tank 110 in which wastewater is introduced and stored, The biomass 120 supplied to the reaction tank 110 and reacting with the wastewater stored in the bioreactor 110 and the wastewater are reacted with the biomass 120, The ultraviolet shielding film 130 and the heat exchanging device 140 may be further included in addition to the structure of the separating membrane filtering part 150 to be discharged.

The ultraviolet (UV) blocking film 130 is disposed on the upper part of the bioreactor 110 and may be provided to prevent the biomass 120 from being damaged by ultraviolet light contained in the natural light 103 during the daytime .

The ultraviolet (UV) blocking film 130 may be used to transmit the visible light of the natural light 103 to the inside of the bioreactor 110 but to prevent the ultraviolet light from being directly irradiated. Or at least one ultraviolet absorber selected from the group consisting of benzotriazoles, benzophenones, salicylic acids and cyanoacrylates, which is excellent in ultraviolet ray absorption property, May be used.

For example, the ultraviolet (UV) blocking layer 130 may be formed by coating a solution containing an ultraviolet absorber on a base film such as polyethleneterephtalate (PET), polycarbonate (PC), or polymethylmethacrylate (PMMA) An ultraviolet blocking film may be attached to the upper part of the bioreactor 110. [

The heat exchanger 140 is connected to the bioreactor 110 and circulates wastewater stored in the bioreactor 110 by a transfer pump 142 to maintain the inside of the bioreactor 110 at a constant temperature .

In the present invention, the heat exchanger 140 is provided to prevent the temperature of the inside of the bioreactor 110 from rising due to the natural light 103, and in particular, by the strong natural light 103 during the summer season The temperature inside the bioreactor 110 can be prevented from rising.

In the present invention, a known heat exchanger capable of controlling the temperature of the inside of the bioreactor 110 may be used as the heat exchanger 140. Such a configuration is well known to those skilled in the art, A detailed description thereof will be omitted for the convenience of explanation and clarity.

Further, not only the heat exchanger 140 but also the ultraviolet (UV) blocking layer 130 can prevent degradation of the performance of the biomass due to damage of the biomass due to ultraviolet rays (particularly damage to the summer) have.

9 is a view showing a configuration of a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to another modification of the technical idea of the present invention.

9, a wastewater treatment system 100 for simultaneously removing chromaticity, total phosphorus, and E. coli according to another modification of the technical idea of the present invention includes biomass 120 And artificial light 102, as shown in FIG. Here, it is preferable that a plurality of the biomass 120 and the artificial light 102 are alternately arranged.

The biomass 120 is located inside the bioreactor 110 and is vertically fixed and biologically reacts with the waters supplied to the bioreactor 110.

The biomass 120 is provided in an immobilized state in the bioreactor 110 and can be prevented or suppressed from being overproduced because the biomass 120 is fixed inside the bioreactor 110 .

Here, the biomass 120 may be a Scenedesmus species sp . ), Acutodesmus species ( Acutodesmus sp . ) And chlorella species ( Chlorella sp . ), And the like. Here, the three or four des mousse species (Scenedesmus sp.) In the S. quadricauda, acutus, obliquus, it may include bijuga, the Mousse Aqua Sat des species (Acutodesmus sp . ) May include obliquus , and chlorella species ( Chlorella sp. ) May include vulgaris .

The biomass 120 can be cultivated in the bioreactor 110 using light emitted from the natural light 103 as an energy source during the daytime and using the artificial light 102 as an energy source during the nighttime. 102 may be electrically connected to a light condensing device 160 for condensing the natural light 103 and a power storage device 165 for converting the light energy of the condensing device 160 into electrical energy for storage.

That is, in the wastewater treatment system 100 for removing chromaticity, total phosphorus, and E. coli simultaneously according to another modification of the technical idea of the present invention, the artificial light 102 and the biomass 120 are constantly And the biomass 120 can be cultured using the light irradiated by the natural light 103 or the artificial light 102 as an energy source.

In the process of culturing the biomass 120, the intracellular volume of the fixed biomass 120 is increased, and the chromaticity, total phosphorus (TP), and E. coli contained in the wastewater can be removed.

10 is a view showing a configuration of a wastewater treatment system for simultaneously removing chromaticity, total phosphorus, and E. coli according to another modification of the technical idea of the present invention.

10, a wastewater treatment system 100 for simultaneously removing chromaticity, total phosphorus, and E. coli according to another modification of the technical idea of the present invention includes a biological reaction tank 110 ' The biomass 120 'may be positioned along a pipeline within the biomass 120' to prevent the biomass 120 'from being damaged by ultraviolet irradiation. The ultraviolet shielding film 130 'may be disposed around the light shielding film 130'. Here, the ultraviolet shielding film 130 'is preferably disposed on both sides of the biomass 120'.

The biomass 120 'is fixed within the tubular bioreactor 110' and can be biologically reacted with the wastewater supplied to the bioreactor 110 'by the transfer pump 162.

The biomass 120 'is provided immobilized inside a tubular bioreactor 110' and is biodegradable because it is fixed inside the bioreactor 110 ' .

Here, the biomass 120 'may be a Scene sp . ), Acutodesmus species ( Acutodesmus sp . ) And chlorella species ( Chlorella sp . ), And the like. Here, the three or four des mousse species (Scenedesmus sp.) In the S. quadricauda, acutus, obliquus, it may include bijuga, the Mousse Aqua Sat des species (Acutodesmus sp . ) May include obliquus , and chlorella species ( Chlorella sp. ) May include vulgaris .

The ultraviolet shielding film 130 'may be used to shield visible light of the natural light 103 to the inside of the bioreactor 110' but to prevent direct exposure to ultraviolet rays. The ultraviolet shielding film 130 ' Or at least one selected from the group consisting of benzotriazoles, benzophenones, salicylic acids and cyanoacrylates, which are excellent in ultraviolet absorption properties, A film containing an ultraviolet absorber can be used.

For example, the ultraviolet (UV) blocking layer 130 'may be formed by coating a solution containing a UV absorbing agent on a base film such as polyethleneterephtalate (PET), polycarbonate (PC), or polymethylmethacrylate It may be formed by attaching the ultraviolet shielding film.

Hereinafter, with reference to the accompanying drawings, a method for treating wastewater and wastewater according to an embodiment of the present invention will be described in detail with reference to a wastewater treatment system for removing chromaticity, total phosphorus, and E. coli simultaneously.

FIG. 11 is a flowchart illustrating a method of processing wastewater by a wastewater treatment system for simultaneously removing color, total phosphorus, and E. coli according to an embodiment of the present invention.

Referring to FIG. 11, a method for treating wastewater according to an embodiment of the present invention includes a step (S 1000) of injecting wastewater into a biological reactor 110, A step S1100 of reacting the biomass 120 and the wastewater in the bioreactor 110 to increase the pH of the wastewater reacted with the biomass 120 and to increase the pH of the wastewater from the wastewater, E. coli) (S1200), precipitating the biomass 120 (S1300), and after the wastewater and biomass 120 react in the bioreactor 110, And filtering and discharging the generated treatment water (S1400).

The pH of the wastewater reacted with the biomass 120 is increased and the chromaticity, total phosphorus (TP) and E. coli are removed from the wastewater (S1200) The biomass 120 is cultivated under the condition that the light energy of the wastewater 103 is irradiated only during the daytime and the air and the carbon dioxide are injected into the bioreactor 110 from the diffuser 114 and the chemical oxygen demand COD) and total nitrogen (TN) can be reduced.

In addition, in step S1200 of removing the chromaticity, total phosphorus (TP) and E. coli from the wastewater while increasing the pH of the wastewater reacted with the biomass 120, An organic substance capable of biodegrading from the wastewater can be obtained under the condition that air is injected into the reaction tank 110 and the natural light 103 is not irradiated at night or a light shielding phenomenon occurs due to interference between the biomass 120 or light transmittance is limited Reduce chemical oxygen demand (COD) using algae as a carbon source, which is called Scenedesmus sp . ), Acutodesmus species ( Acutodesmus sp . ) And chlorella species ( Chlorella sp . ), And at least one species selected from the group consisting of Scenedesmus sp . ) May include S. quadricauda , acutus , obliquus, bijuga , and the Acutodesmus species ( Acutodesmus sp . ) May include obliquus , chlorella species ( Chlorella sp . ) May include vulgaris .

In step S1300 of precipitating the biomass 120, light energy, air, and carbon dioxide are not supplied to the bioreactor 110, as shown in FIG. 8 (c). In such a state, the biomass 120 may be precipitated in the lower part of the bioreactor 110.

In step S1400 of filtering / discharging the wastewater in the bioreactor 110, the treatment water having the chromaticity, total phosphorus (TP) and E. coli removed by the separation membrane filtration unit 150 described above is finally It can be discharged into rivers or rivers.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be possible. It is therefore to be understood that one embodiment described above is illustrative in all aspects and not restrictive.

100; A wastewater treatment system 110; Bioreactor
120; Biomass 130; Sunscreen
140; Heat exchanger 150; Membrane filter
160; Condensing device 165; Power storage device

Claims (8)

A single bioreactor into which wastewater is introduced and stored;
A biomass supplied to the bioreactor and reacting with wastewater stored in the bioreactor;
A membrane filtration unit for filtering and discharging the treated water generated by the decomposition of the wastewater after the wastewater and the biomass react with each other;
An ultraviolet shielding membrane disposed on the upper portion of the bioreactor and shielding the ultraviolet light to prevent the biomass from being damaged by irradiation with ultraviolet light;
An artificial light provided inside the bioreactor, wherein a plurality of artificial lights are arranged alternately with the biomass so as to be spaced apart from the biomass at a predetermined interval; And
And a heat exchanger connected to a transfer pump connected to the bioreactor to circulate the wastewater stored in the bioreactor and provided outside the bioreactor to adjust the temperature inside the bioreactor to a constant value,
The biomass is cultivated in the bioreactor by using light emitted from a light source as an energy source and carbon dioxide mixed with air in a diffuser provided in the bioreactor as a carbon source,
The artificial light is electrically connected to a light condensing device for condensing natural light and a power storage device for converting and storing the light energy of the light condensing device into electric energy,
The biomass is cultivated in the bioreactor using light emitted from natural light during the day as an energy source and using the artificial light as an energy source at night,
Wherein the artificial light is provided only inside the biomass and is provided inside the bioreactor in a vertical direction so as to have the same length as the biomass,
Wherein the biomass is positioned inside the bioreactor and is fixed in the bioreactor in a vertical direction to biologically react with the wastewater supplied to the bioreactor while preventing or suppressing excessive growth of the biomass,
Wherein the biomass immobilized in the bioreactor is removed from the wastewater by removing chromaticity, total phosphorus, and E. coli contained in the wastewater as the internal volume of the biomass increases during the culturing process. .
The method according to claim 1,
Under the condition that air is mixed into the bioreactor including the wastewater and the biomass, and natural light or artificial light is not irradiated or a light shielding phenomenon occurs due to inter-biomass interferences or the light transmittance is limited, (TN), total phosphorus (TP), and E. coli are removed and the chemical oxygen demand (COD) is reduced by using a biodegradable organic material from wastewater as an energy source and carbon source A wastewater treatment system that simultaneously removes chromaticity, total phosphorus, and E. coli.
3. The method of claim 2,
The biomass may be a Scenedesmus species sp . ), Aqua Sat des mousse species (Acutodesmus sp.) And Chlorella species (Chlorella sp . ), ≪ / RTI >
The above Scenedesmus species sp . ) As may be included at least any one selected from the group consisting of S. quadricauda, acutus, and bijuga obliquus, the Mousse Aqua Sat des species (Acutodesmus sp . ) As comprises a obliquus, Chlorella species (Chlorella sp.) In the wastewater treatment system for removing the color, total phosphorus and E. coli comprising the same time vulgaris.
The method of claim 3,
The UV blocking layer 130 may include at least one ultraviolet absorbing agent selected from the group consisting of benzotriazoles, benzophenones, salicylic acids and cyanoacrylates. However,
The ultraviolet shielding film may be formed by coating a solution containing an ultraviolet absorber on a base film formed of any one selected from the group consisting of PET, PC and PMMA to prepare a separate ultraviolet shielding film, And removing the chromaticity, total phosphorus, and E. coli simultaneously.
delete A bioreactor into which wastewater is introduced and stored;
A biomass supplied to the bioreactor and reacting with wastewater stored in the bioreactor;
A membrane filtration unit for filtering and discharging the treated water generated by the decomposition of the wastewater after the wastewater and the biomass react with each other;
An ultraviolet shielding membrane disposed on the upper portion of the bioreactor and shielding the ultraviolet light to prevent the biomass from being damaged by irradiation with ultraviolet light; And
And a heat exchanger for uniformly controlling the temperature inside the bioreactor,
The biomass is cultivated in the bioreactor by using light emitted from a light source as an energy source and carbon dioxide mixed with air in a diffuser provided in the bioreactor as a carbon source,
The bioreactor is formed of a single tubular shape that is repeatedly bent, and the biomass is located along a channel inside the bioreactor. In order to prevent the biomass from being damaged by irradiating the biomass with ultraviolet rays, The ultraviolet shielding film formed in the shape of a tube or tube is disposed so as to surround the biomass located inside the reaction tank,
Wherein the biomass is provided in a fixed state inside the tubular bioreactor and biologically reacts with the wastewater supplied to the bioreactor by the transfer pump while preventing or suppressing the overgrowth of the biomass,
Wherein the biomass fixed inside the tubular bioreactor removes chromaticity, total phosphorus, and E. coli as the internal volume of the cell is increased during the culturing process, thereby simultaneously removing chromaticity, total phosphorus, and E. coli.
A wastewater treatment method using the wastewater treatment system according to any one of claims 1 to 4,
Injecting wastewater into the bioreactor (S1000);
Reacting the biomass with wastewater in the bioreactor (S1100);
(S1200) of increasing the pH of the wastewater reacted with the biomass and removing chromaticity, total phosphorus (TP) and E. coli from the wastewater;
Precipitating the biomass (S1300); And
(S1400) after the wastewater is reacted with the biomass in the bioreactor, and the wastewater is decomposed and treated to filter and discharge the generated wastewater.
In step S1200 of removing the chromaticity, total phosphorus (TP) and E. coli from the wastewater while increasing the pH of the wastewater reacted with the biomass, the light energy of the natural light in the bioreactor (COD) and total nitrogen (TN) are reduced from the wastewater under the condition that air and carbon dioxide are injected from the diffuser into the bioreactor simultaneously with the irradiation of the biomass, And E. coli are removed at the same time.
8. The method of claim 7,
In step S1200 of removing the chromaticity, total phosphorus (TP) and E. coli from the wastewater while increasing the pH of the wastewater reacted with the biomass, air is injected from the diffuser into the bioreactor, (COD) is reduced using algae that use organic materials biodegradable from the wastewater as a carbon source under the condition that natural light is not irradiated or a light shielding phenomenon due to inter-biomass interferences occurs or light transmittance is limited ,
The algae may be selected from the group consisting of Scenedesmus sp.), sat Aqua des mousse species (Acutodesmus sp.) and Chlorella species (Chlorella sp . ), And at least one species selected from the group consisting of Scenedesmus sp . ) As may be included at least any one selected from the group consisting of S. quadricauda, acutus, and bijuga obliquus, the Mousse Aqua Sat des species (Acutodesmus sp . ) Includes obliquus , chlorella species ( Chlorella sp . ) Comprises a vulgaris , wherein the color, total phosphorus, and E. coli are simultaneously removed.

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