KR20150145954A - Wastewater purifying device and wastewater purifying system - Google Patents

Wastewater purifying device and wastewater purifying system Download PDF

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KR20150145954A
KR20150145954A KR1020140075541A KR20140075541A KR20150145954A KR 20150145954 A KR20150145954 A KR 20150145954A KR 1020140075541 A KR1020140075541 A KR 1020140075541A KR 20140075541 A KR20140075541 A KR 20140075541A KR 20150145954 A KR20150145954 A KR 20150145954A
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water
contaminated water
polluted
contaminated
unit
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KR1020140075541A
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KR101714117B1 (en
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권병관
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글로벌에코텍 주식회사
주식회사 엠티씨엔씨
스마트비젼(주)
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/08—Alkali metal chlorides; Alkaline earth metal chlorides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Plant Pathology (AREA)
  • Pest Control & Pesticides (AREA)
  • Inorganic Chemistry (AREA)
  • Agronomy & Crop Science (AREA)

Abstract

A system for purifying contaminated water comprises: a plurality of contaminated water purifying devices linearly or parallelly connectable according to at least one operation mode, wherein a purified water discharge line of a first contaminated water purifying device disposed in a front end thereof may be connected to a contaminated water feeding line of a second contaminated water purifying device disposed in a rear end of a purified water discharging line; a contaminated water storing tank including a supply device for supplying first and second additives for condensing and precipitating organic material in contaminated water in each of the contaminated water purifying devices, wherein each of the contaminated water purifying devices is connected to the contaminated water feeding line and the purified water discharging line; a water quality measuring unit for measuring water quality in the contaminated water storing tank; and a spraying unit for spraying the first and second additives into the contaminated water storing tank based on the measured water quality. Accordingly, the system for purifying contaminated water may treat contaminated water without harming the human body through effluent condensed water which is a natural material, and controls a fed amount and fed time of an additive based on a measurement result of water quality of contaminated water, so a contaminated water purifying speed may be effectively improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a waste water purifying apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polluted water purification apparatus and system, and more particularly, to a polluted water purification apparatus and system which are modularized and easy to install and maintain in order to purify polluted water by condensing and precipitating organic matters in polluted water. will be.

In general, contaminated water containing organic matter such as green tide or red tide will block the sunlight in water and reduce the amount of dissolved oxygen, thereby destroying the water body system by reducing the survival rate of aquatic organisms.

More specifically, green tide refers to a phenomenon in which green algae, which are phytoplankton, are greatly increased in a eutrophicated lake or a stream having a slow flow rate, and the water is changed to green. When a green tide is covered on the surface of the lake, sunlight is blocked in water and dissolved oxygen is added The amount of dissolved oxygen in the water is reduced. This causes fish and aquatic creatures to die, smell bad, and destroy the ecosystem of the water, resulting in a number of social, economic and environmental problems. Once the nutrients entering the water are not removed, they remain in the aquatic ecosystem so that the algal blooms are recycled.

On the other hand, red tide is a phenomenon in which plankton suddenly reproduces in an enormous number and changes color of sea, river, canal, lake, etc. In general, red tide is often called red tide, The color depends on the color of the plankton causing. Phytoplankton such as diatom and dinoflagellate are the most common plankton causing red tides. In addition, there are many kinds of plankton that cause red tide by cyanobacteria, prototrophs (noctiluca), and ciliates (mesodinium) . The greatest cause of red tides is the eutrophication of water, as in South Korea, where there are too many organic nutrients in the water.

Here, various technologies related thereto are provided.

Korean Patent Laid-Open No. 10-2011-0030838 discloses a method for removing green algae or red tide through the application of yellow clay, more specifically, applying loess to a green or red tide occurrence area to cause aggregation of green or red tide organisms and loess, The present invention relates to a method for improving the quality of water by precipitating in water and, incidentally, destroying cells of algae and red tide organisms by the aluminum component in the loess.

Here, the prior art has only a temporary effect. The problem is that the sedimented green tide or red tide creature floats up again, the turbidity of the water body becomes high due to a large amount of yellow clay spraying, the fish is killed, As the soils become acidified, marine organisms can cause various secondary environmental pollution such as causing physiological disorder or death.

On the other hand, a technique for improving the quality of water by adding metal oxides in addition to the yellowing method and coagulating the organic matters contained in the polluted water is generally used.

Here, when a metal oxide (such as aluminum sulfate) is used, the flocculation reaction can be effectively performed, but a serious problem that causes various diseases (for example, Alzheimer's) as a harmful component to the human body may occur.

That is, a technology for effectively cleaning various polluted water including organic matter such as red tide or green tide and at the same time, harmless to the human body is desperately needed.

Korean Registered Utility Model No. 0343482 (Registered on Feb. 19, 2004) relates to a contaminated water purification system, which forms a water hole into which polluted water can flow in and out, and contains lumps, briquettes, mud, silica sand, A plurality of water tanks are arranged in series so that the contaminated water can be gradually purified.

Korean Patent Registration No. 0912071 (registered on Aug. 8, 2009) relates to a wastewater incineration purification apparatus, which can rapidly and effectively purify wastewater by burning organic matter and harmful bacteria contained in wastewater by microwaves generated from an incineration wave generator It is possible to obtain a purifying device capable of varying the size, and it is also possible to connect a plurality of the devices to one another, so that the device can be widely used for industrial or home use.

However, the Korean Registered Utility Model No. 0343482 has a disadvantage in that it requires a large-scale treatment facility, and is inconvenient in that the process of sedimentation and filtration, that is, the treatment takes a long time, is disclosed in Korean Patent No. 0912071 There is a problem that a large power consumption is required to process a large amount of polluted water.

Korean Registered Utility Act No. 0343482 (registered on Feb. 19, 2004) Korean Registered Patent No. 0912071 (registered on August 6, 2009)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a polluted water purification apparatus capable of performing polluted water treatment harmless to the human body through a desalination liquid condensate.

An object of the present invention is to provide a polluted water purification apparatus that can utilize wastes that cause serious environmental pollution as valuable industrial industrial resources and can perform a polluted water purification process economically.

An object of the present invention is to provide a polluted water purification apparatus capable of effectively raising the polluted water purification rate.

Disclosed is a contaminated water purification system capable of variably cleaning polluted water according to pollution degree and capacity of polluted water.

Among the embodiments, the pollution water purification apparatus includes a polluted water storage tank; A water quality measuring unit for measuring a water quality in the polluted water storage tank; And an injector for injecting first and second additives for flocculating and precipitating organic substances in the polluted water into the polluted water storage tank based on the measured water quality.

Here, the injection unit may include a first injection unit for injecting a first additive made of an aqueous solution of a metal oxide having a hydroxyl group (-OH) into the contaminated water in order to primarily coagulate the organic substances contained in the contaminated water; And a second ejection unit for ejecting a second additive including desulfurized condensed water extracted from the food waste desorbing liquid to the contaminated water for secondary aggregation and precipitation of the primary aggregate after the primary aggregation type.

In one embodiment, the polluted water purification apparatus may further include a mixing section for mixing the contaminated water before the operation of the jetting section.

In one embodiment, the polluted water purification apparatus may further include a purified water discharge unit for discharging the purified water from which the organic matter in the polluted water has been removed through the flocculation and sedimentation to the outside.

Here, the purified water discharging part may include an ultraviolet ray filter for sterilizing ultraviolet ray, which is discharged to the outside.

In one embodiment, the contaminated water purification apparatus may further include a sludge discharge unit for discharging the sludge generated through the flocculation and sedimentation.

In one embodiment, the polluted water purification apparatus may further include a control unit for controlling the injection unit by determining an injection time and an injection amount of at least one of the first and second additives based on the measured water quality.

Among the embodiments, the polluted water purification system includes a plurality of polluted water purification devices capable of being connected in series or in parallel according to at least one operating mode, and the purified water discharge line of the first polluted water purification device located at the front- Connectable with polluted water inflow line of water purifier; And a supply device for supplying first and second additives for flocculating and precipitating the organic matter in the contaminated water to each of the plurality of pollution water purification apparatuses, wherein each of the plurality of pollution water purification apparatuses comprises: A polluted water storage tank connected to a purified water discharge line; A water quality measuring unit for measuring a water quality in the polluted water storage tank; And a jetting unit for jetting the first and second additives into the contaminated water storage tank based on the measured water quality.

In one embodiment, the polluted water purification system may further comprise at least one pollution water purification apparatus based on the water quality measured in the plurality of pollution control apparatuses, and a control unit for controlling the operation of each of the supply apparatuses.

In one embodiment, the control unit may discharge the purified water discharge line of the first pollution water purification apparatus to the second polluted water purification apparatus, based on the measured water quality after spraying the first and second additives in the first pollution water purification apparatus, To the contaminated water inlet line of the device.

In one embodiment, the control unit may selectively apply one of the plurality of pollution control devices in serial connection, parallel connection, or combination connection in which serial connection and parallel connection are combined according to the at least one operating mode .

The disclosed technique may have the following effects. It is to be understood, however, that the scope of the disclosed technology is not to be construed as limited thereby, as it is not meant to imply that a particular embodiment should include all of the following effects or only the following effects.

The polluted water purification apparatus and system according to an embodiment of the present invention can perform polluted water treatment harmless to the human body through the desalination liquid condensate which is a natural substance.

The polluted water purification system and system according to an embodiment of the present invention can effectively increase the polluted water purification rate by controlling the input amount and the injection time of the additive based on the water quality measurement result of polluted water.

The polluted water purification system according to an embodiment of the present invention can provide a variable polluted water purification capability by controlling connection between a plurality of polluted water purification apparatuses in accordance with pollution degree and capacity of polluted water.

1 is a perspective view illustrating a polluted water purification system according to an embodiment of the present invention.
Fig. 2 is a view showing the polluted water purification apparatus shown in Fig. 1; Fig.

The description of the present invention is merely an example for structural or functional explanation, and thus the scope of the right of the disclosed technology should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the disclosed technology should be understood to include equivalents capable of realizing technical ideas.

1 is a perspective view illustrating a polluted water purification system according to an embodiment of the present invention.

Referring to FIG. 1, a contaminated water purification system 100 includes an additive storage device 110, a supply device 120, and a plurality of polluted water purification devices. In FIG. 1, the polluted water purification system 100 includes four polluted water purification apparatuses. However, the present invention is not limited thereto, and two, three, or five or more polluted water purification apparatuses . ≪ / RTI > Further, each of the polluted water purification apparatuses may be connected to each other in series, parallel, or a combination of series and parallel connections. For example, the discharge line of the first pollution water purification apparatus located relatively upstream (or in the purification process) may be connected to the polluted water inflow line of the second pollution water purification apparatus located at the relatively downstream end, One polluted water purification device may be included.

The polluted water purification system 100 performs steps of coagulating and precipitating organic matters in the polluted water by injecting first and second additives into the polluted water that has flowed in. Before describing the polluted water purification system 100, the first and second additives will be described in detail.

The first additive

The first additive corresponds to an aqueous solution of a metal hydroxide having a hydroxyl group (-OH), and can be uniformly sprayed on the water body in the form of an aqueous solution. In addition, the first additive can change the chemical state in the waterbody within a short time, and can primarily aggregate the green alga or red tide organism.

In one embodiment, the first additive may comprise at least one of sodium hydroxide (NaOH) and potassium hydroxide (KOH). Here, sodium hydroxide and potassium hydroxide have high solubility at room temperature, so they can be prepared in aqueous solution having high concentration [solubility of sodium hydroxide in water: 111 g / 100 ml (20 캜), potassium hydroxide in water Solubility: 110 g / 100 ml (25 캜)].

The concentration of sodium hydroxide (NaOH) or potassium hydroxide (KOH) in the first additive is not limited, but it is preferable that the concentration is high considering the coagulation speed and economical efficiency. For example, the first additive may consist of a saturated aqueous solution, in particular a saturated aqueous solution of sodium hydroxide (NaOH).

The second additive includes desulfurized condensate extracted from the food waste remover. Herein, food waste is collectively referred to as food wastes or food wastes which are abandoned by households and restaurants, food waste left over from the distribution process, food waste after the distribution period, etc., Lt; / RTI >

In one embodiment, the food waste rejection liquid is leachate generated during food garbage disposal, and may be a liquid contaminated water which can not be used in everyday life or industrially.

The desalination liquid condensate can be produced by heating and cooling the food waste removal liquid and can contain acetic acid (CH3COOH).

In general, the organic additive is a composition in which substances effective for flocculation or sedimentation are uniformly mixed. In contrast, the second additive used in the present invention is constituted separately from the first additive, After tea aggregation is terminated, it may be added to the polluted water to induce secondary aggregation and sedimentation of aggregates.

More specifically, the second additive is in the form of an aqueous liquid, like the first additive, and can be uniformly sprayed on the water body. On the other hand, since the polluted water occupies a predominant volume of water, the main phase is a liquid phase, and the second additive sprayed is also a liquid phase, so that the sprayed second additive changes the chemical state in the water body in a short time, Lt; RTI ID = 0.0 > coagulation < / RTI >

The aqueous solution of the desalin solution of the second additive reacts with the phosphorus component in the contaminated water to form a water-insoluble and heavier phosphate, and the formed phosphoric acid precipitates, so that the phosphorus component can be effectively removed, Can lead to the precipitation of the primary aggregate undergoing the reaction.

In one embodiment, the second additive may further comprise a metal oxide. Here, the metal oxide is selected from the group consisting of aluminum sulfate (Al 2 (SO 4) 3), aluminum chloride (AlCl 3), ferrous sulfate (FeSO 4), ferric sulfate (Fe 2 (SO 4) 3) And ferric chloride (FeCl3). The metal oxide may be harmful to the human body, but it may be contained in a small amount in the second additive for rapid aggregation reaction.

Here, the metal oxide can induce secondary agglomeration and precipitation in the primary agglomerate in the same manner as the aqueous solution of the desorbing liquid. More specifically, the water-soluble and non-water-soluble aluminum hydroxide [Al (OH) 3], iron hydroxide [Fe (OH) 2, or Fe OH) 3] and the like act synergistically so that rapid precipitation can be achieved.

Further, the aluminum ion or the iron ion of the second additive reacts with the phosphorus component in the water body to form a water-insoluble and heavier phosphate, and the phosphate formed is precipitated, so that the phosphorus component can be effectively removed. In addition, the phosphate formed can lead to precipitation of the primary aggregate that is floating during the precipitation process.

In one embodiment, aluminum sulfate (Al2 (SO4) 3), aluminum chloride (AlCl3), ferrous sulfate (FeSO4), ferric sulfate [Fe2 (SO4) 3], ferrous chloride Since ferric chloride (FeCl3) has high solubility at room temperature, it can be prepared in an aqueous solution having a high concentration [solubility of aluminum sulfate in water: 36.4 g / 100 ml (20 ° C) Solubility in water of ferrous sulfate: 25.6 g / 100 ml, solubility of ferrous chloride in water: 68.5 g / 100 ml (20 캜), chloride Solubility of ferric iron in water: 92 g / 100 ml (20 캜)].

In one embodiment, the first additive may be added until the pH of the contaminated water is adjusted to a range of 9 to 11, and the second additive may be added until the pH of the contaminated water is adjusted to a range of 6.5 to 8.5 .

More specifically, the polluted water generated in the green tide or the red tide generally becomes acidified due to the formation of nitrogen oxides or phosphorus oxides and the decrease of dissolved oxygen, and generally has a pH of 6-7. In the contaminated water purification process according to the present invention, it is preferable that the pH of the polluted water containing organic substances is adjusted to 9 to 11 by the addition of the first additive. The primary agglomeration and the rate of the agglomeration and the rate of the agglomeration are maximized in the pH range, and the aggregation strengthening effect or sedimentation effect of the second additive is maximized. It is preferable that the pH of the contaminated water after primary agglomeration is in the range of 6.5 to 8.5 on the basis of the primary water after the secondary agglomeration and precipitation. Therefore, in the polluted water purification process according to the present invention, each of the first and second additives can be put into the respective pH ranges until they are adjusted.

Referring again to FIG. 1, the additive storage device 110 stores the first and second additives. The additive storage device 110 has an empty space therein and may have a plurality of spaces or a plurality of storage devices to separately fill the first and second additives. For example, the additive storage device 110 may include additive storage devices 111, such as a first additive storage device 111 for storing a first additive and a second additive storage device 112 for storing a second additive, . Additionally, the additive storage device 110 may be implemented in a fixed or interchangeable fashion, depending on the size of the contaminated water purification system 100.

The supply device 120 receives the first and second additives from the additive storage device 110 and supplies the first and second additives to the water quality purification device. More specifically, the supply device 120 sucks the first or second additive from the additive storage device 110 using the motor provided therein, and supplies the first or second additive to the plurality of water purification devices through a pipe 1 or the second additive may be supplied or distributed to the water quality purification apparatus.

In one embodiment, the supply device 120 receives a control signal from the outside and supplies a predetermined amount of the first or second additive to the water quality purification device that requires supply of the first or second additive, . For example, the supply device 120 may supply a specific amount of the first additive to the first pollution control device in accordance with the control signal of the control part, which will be described later, Can supply.

The polluted water purification apparatus receives polluted water, flocculates and deposits organic matters in polluted water by using the first and second additives, and discharges polluted water (hereinafter referred to as " purified water " Or supply). Hereinafter, the pollution control device will be described in detail with reference to FIG.

Fig. 2 is a view showing the polluted water purification apparatus shown in Fig. 1; Fig.

2, the pollution water purification apparatus 200 includes a polluted water storage tank 210 for storing polluted water, a water quality measurement unit 220 for measuring the polluted water quality, And a jetting unit 230 for jetting a first or second additive that coagulates and precipitates the organic substances in the contaminated water into the tank 210, respectively. In addition, in one embodiment, the pollution water purification apparatus 200 may further include a mixing portion 240 for mixing the polluted water, a purified water discharge portion 250, and a sludge discharge portion 260.

The polluted water storage tank 210 has a cylindrical shape and has an empty space therein, and is connected to a polluted water inflow line and a purified water discharge line. In the contaminated water storage tank 210, the contaminated water is purified through the chemical reaction between the inflowed polluted water (particularly the organic matter in the polluted water) and the first and second additives, and the purified water is discharged through the purified water discharge line And may be discharged outside the contaminated water storage tank 210. The polluted water storage tank 210 may be made of a transparent material (for example, a transparent acrylic material) so as to visually confirm condensation and sedimentation of organic matter therein.

Meanwhile, the polluted water inflow line and the purified water discharge line may be connected to the upper surface, side surface, and the like of the polluted water storage tank 210, and more particularly, disposed above the side surface of the polluted water storage tank 210. Since the polluted water purification apparatus 200 uses the condensation and precipitation reaction of the organic matter and the pollutant (organic matter, etc.) is deposited on the bottom of the polluted water storage tank 210, in particular, It is preferable that the purified water is connected to the upper portion of the side surface of the body 210 so that only the purified water can be discharged.

The water quality measuring unit 220 measures the water quality in the contaminated water storage tank 210. Here, the water quality corresponds to water quality information including water temperature, dissolved oxygen (DO), dissolved nitrogen (DN), pH concentration (hydrogen exponent) ) Can measure the quality of water including conventional sensors such as a temperature sensor, a dissolved oxygen amount measuring sensor, and a pH sensor.

Hereinafter, the water quality corresponds to the pH concentration is explained as an example.

The water quality measuring unit 220 may be disposed on the upper surface or the side surface of the contaminated water storage tank 210. In an embodiment of the present invention, the transmitter of the water quality measuring unit 220 includes a polluted water storage tank 210 And the pH sensor is disposed in the center portion of the contaminated water storage tank 210. [0050] The water quality measurement unit 220 is disposed on the upper surface of the polluted water storage tank 210 to avoid interference with the polluted water inflow line and the purified water discharge line disposed on the side surface of the polluted water storage tank 210, It is possible to easily visually confirm the coagulation and precipitation reaction of organic substances in the reaction vessel 210.

The sprayer 230 injects the first and second additives supplied from the supply device into the contaminated water storage tank 210.

In one embodiment, the jetting section 230 includes a first jetting unit 231 for jetting the first additive and a second jetting unit 232 for jetting the second additive. As described above, it is preferable that the first and second injection units 231 and 232 are provided independently of each other in that the constitution of the first additive and the second additive are different from each other and the injection timing also differs.

In one embodiment, the jetting section 230 may comprise a plurality of jetting unit pairs, in which the first and second jetting units 231 and 232 are paired. The plurality of pairs of the spraying units may be disposed at equal intervals on the side surface of the polluted water storage tank 210, and the first or second additives may be injected simultaneously or sequentially to improve the flocculation or precipitation reaction speed of the organic matter.

In one embodiment, as described above, the jetting unit 230 is charged with the first additive until the pH of the contaminated water is adjusted to the range of 9 to 11, and the pH of the contaminated water is adjusted to the range of 6.5 to 8.5 The second additive may be added.

Alternatively, when the plurality of polluted water purification apparatuses 200 are connected in series to purify the polluted water step by step, the jetting unit 230 may inject a predetermined amount of the first or second additive. Here, the predetermined amount may be set to have a constant value regardless of the pH of the polluted water, or may be set to be inversely proportional to the pH concentration of the polluted water.

The mixing portion 240 mixes the contaminated water. More specifically, the mixing portion 240 may be driven before the first additive is injected through the first injection unit 231 to mix the contaminated water. Likewise, the mixing portion 240 may be driven before injecting the second additive through the second injection unit 232. [ The mixed portion 240 is included in the contaminated water, but the reaction area of the first additive or the second additive can be broadened by mixing the organic matter (for example, green tide) randomly distributed or dispersed with water, The flocculation or sedimentation rate, that is, the purification rate of the polluted water, can be improved.

For example, the mixing unit 240 may be implemented as a rotating brush, a rotating screw, an air pump, or the like. When the mixing unit 240 is implemented as a rotating brush, When the mixing portion 240 is implemented as an air pump, mixing of the polluted water can be induced through the injected air.

The purified water discharging unit 250 discharges the purified water to the outside of the contaminated water storage tank 210. Here, the purified water may be a contaminated water having undergone the coagulation and precipitation process of the organic matter and at least a part of the pollutant (precipitate) is removed.

In the case where a plurality of polluted water purification apparatuses are serially connected to purify the polluted water stepwise, the purified water discharge unit 250 supplies the purified water directly to the outside (for example, the purified water tank) based on the pH concentration of the purified water, It can be supplied to the polluted water purifying apparatus 200 at the subsequent stage. For example, the purified water discharging part 250 includes a 3-way valve, and the 3-way valve is connected to the purified water discharging line of the first polluting water purifying device 200 and the purified water discharging line of the second polluting water purifying device 200 The purified water discharging unit 250 connects the purified water discharging line and the contaminated water inflow line when the pH concentration of the purified water is less than pH 8. When the pH concentration is equal to or more than 8, the purified water discharging unit 250 connects the purified water discharging line and the purified water discharging line, The discharge line and the purified water external supply line can be connected.

In one embodiment, the purified water discharge section 250 may include an ultraviolet filter (not shown) for sterilizing the purified water with ultraviolet ray. The ultraviolet filter corresponds to an apparatus for sterilizing purified water using an ultraviolet lamp (UV lamp). The ultraviolet filter prevents the propagation of microorganisms by changing the DNA of the microorganisms contained in the purified water, and is particularly effective for microorganisms such as bacteria, spores and viruses. In addition, the ultraviolet filter can remove microorganisms and the like that can propagate in the polluted water storage tank 210 and the purified water discharge line, etc., while the operation of the polluted water purification apparatus 200 is stopped. The ultraviolet filter preferably uses a wavelength of 200 to 280 nm (UV-C), and in particular, it is preferable to use 254 nm which is known to have excellent germicidal power.

The ultraviolet filter may comprise a conventional fluorescent lamp and an ultraviolet ray transmission filter (or glass).

In one embodiment, the purified water discharge portion 250 may include a carbon filter (or an activated carbon filter). Here, carbon (or activated carbon) is an aggregate of amorphous carbon in which fine pores made of wood or sawdust are developed, and has a large internal surface area due to fine pores of a molecular size well formed during the activation process. The functional group of the carbon atom existing on the surface of the carbon or the activated carbon can attract the molecules of the adsorbate by applying an attractive force to the surrounding liquid or gas.

The carbon filter can remove the taste of the purified water and odor inducing substances through carbon and also remove the coloring substance, residual chlorine, surfactant, trihalomethane, trihalomethane precursor, pesticide and other organic substances .

1, the carbon filter may be provided in a purified water discharging portion of each of the pollution control devices in a pollution water purification system including a plurality of pollution water purification devices, and in particular, (Between the first and second pollution water purifying apparatuses on the right side) of the third pollution water purification apparatus in consideration of the water treatment cost, the efficiency of the carbon filter, etc. The purified water discharge unit includes an ultraviolet filter, It is possible to provide not only a carbon filter but also a filter used for ordinary water treatment. Particularly, when a plurality of polluted water purification apparatuses are connected, the presence or absence of each filter, It will be apparent to those skilled in the art that various changes may be made.

The sludge discharging unit 260 discharges the sludge (or contaminants, precipitates, etc.) generated through the coagulation and sedimentation reaction to the outside of the contaminated water storage tank 210. The sludge discharge unit 260 may discharge the sludge using a sludge discharge pipe connected to the lower surface of the polluted water storage tank 210, a valve, and a motor. For example, after discharging the purified water through the purified water discharging unit 250, the sludge discharging unit 260 opens the valve on the sludge discharging pipe and discharges the sludge to the contaminated water storage tank 210 To the outside.

In one embodiment, the polluted water purification apparatus 200 further includes a control unit (not shown) for controlling the operation of the jetting unit 230, the mixing unit 240, the purified water discharging unit 250 and the sludge discharging unit 260 .

The control unit receives the measured water quality information from the water quality measuring unit 220 and determines the amount of the first or second additive to be sprayed through the spraying unit 230 and the spraying time of each of the additives, The operation of the mixing unit 240 can be controlled based on whether or not the contaminated water is introduced, the injection time of the first or second additives, and the like. Further, the control unit can control the purified water discharging unit 250 and the operation of the sludge discharging unit 260 by determining the discharging direction (destination) of the purified water based on the water quality information of the purified water.

As described above, when the measured pH concentration is 8 or less, the control unit can determine the amount of the first or second additive to be added in proportion to the difference in the pH concentration measured based on the pH 8. Further, the control unit may control the jetting unit 230 to inject the second additive after the agglomeration time (for example, 5 minutes) of the organic substance by the first additive has elapsed. Alternatively, the control unit may control the supply device and the jetting unit 230 so that the first additive is supplied until the pH concentration of the contaminated water reaches a specific value (for example, 10). The first control method is suitable for a case where a plurality of polluted water purifying apparatuses 200 are connected in series (serial mode), and the second control method is suitable for a case where a plurality of polluted water purifying apparatuses 200 are connected in parallel (parallel mode) And the control method of the control unit may be selectively applied according to an operation mode of the polluted water purification system (for example, a serial mode or a parallel mode).

The control unit can determine the operation mode of the polluted water purification system based on the pH concentration of the supplied polluted water or the supplied amount of the polluted water. Here, the operating mode includes a serial mode in which the pollution control apparatuses are connected in series, a parallel mode in which the pollution control apparatuses are connected in parallel, and a combination mode in which the series connection and the parallel connection are combined (combined) as described above.

The control unit can control the connection configuration between the plurality of polluted water purifying apparatuses 200 according to the mode. For example, in the case of the serial mode, the control unit can control the purified water discharge unit 250 so that the first polluted water purification apparatus 200 completely cleans the contaminated water and directly discharges the polluted water to the outside. Alternatively, in the case of the parallel mode, the control unit controls the first pollution water purifying device 200 so that the first purified polluted water can be supplied through the polluted water inflow line of the second pollution water purification apparatus 200, The purified water discharging unit 250 of the water purifier 200 can be controlled. Likewise, in the case of the combination mode, the control unit determines the polluted water purifying apparatuses to be positioned at the front end and the rear end of the process on the basis of the operation of each of the plurality of polluted water purifying apparatuses and the water quality information of each purified water, The purified water discharge line can be controlled to be connected to the polluted water inflow line at the downstream or to be discharged immediately to the outside.

The control unit includes a communication module for receiving the measured water quality information and transmitting various control signals, a processing module for determining the operation of each component based on the measured water quality information and pre-stored water quality management policy, a first additive for each water quality information, An input module for receiving a water quality management policy or a specific parameter from an administrator of the pollution water purification system, and a display for displaying the state of the pollution water purification system to the manager, Modules, and the like. For example, the control unit may be implemented as a conventional computer or a server.

The polluted water purification apparatus 200 and the system according to an embodiment of the present invention can effectively increase the polluted water purification rate by controlling the input amount and the injection time of the additive based on the water quality measurement result of the polluted water, Various operating modes can increase the efficiency of pollution control.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

100: Pollution water purification system
110: Additive storage device
111: First additive storage device
112: Second additive storage device
120: Feeder
121: First additive supply device
122: second additive supply device
130: Contaminated water storage tank
140: Water quality measuring device
150:
160:
170: purified water discharging portion
180: sludge discharge portion
200: Pollution water purification device
210: Contaminated water storage tank
220: Water quality measurement unit
230:
231: First injection unit
232: Second injection unit
240: mixing part
250: purified water discharging portion
260: sludge discharge portion

Claims (11)

Contaminated water storage tank;
A water quality measuring unit for measuring a water quality in the polluted water storage tank; And
And a jetting unit for jetting the first and second additives for coagulating and precipitating organic matters in the polluted water into the polluted water storage tank based on the measured water quality.
2. The apparatus as claimed in claim 1,
A first injection unit for injecting a first additive made of an aqueous solution of a metal oxide having a hydroxyl group (-OH) into the contaminated water in order to primarily flocculate the organic matter contained in the contaminated water; And
And a second injection unit for spraying a second additive containing desulfurization liquid condensate extracted from the food waste removal liquid to the contaminated water to coagulate and precipitate the primary aggregate secondarily after the primary aggregation type.
The method according to claim 1,
And a mixing unit for mixing the contaminated water before the operation of the jetting unit.
The method according to claim 1,
And a purified water discharging unit for discharging the purified water from which organic matter has been removed in the contaminated water to the outside through the flocculation and sedimentation.
5. The water treatment system according to claim 4, wherein the purified water discharge portion
And an ultraviolet ray filter for sterilizing ultraviolet rays from the purified water discharged to the outside.
The method according to claim 1,
And a sludge discharge unit for discharging the sludge generated through the flocculation and sedimentation.
The method according to claim 1,
And a control unit for controlling the injection unit by determining an injection time and an injection amount of at least one of the first and second additives based on the measured water quality.
A plurality of polluted water purifying apparatuses that can be connected in series or in parallel according to at least one operating mode; a purified water discharge line of the first pollution water purification apparatus located at the preceding stage is connected to a polluted water inflow line of the second pollution water purification apparatus Available -; And
And a supply device for supplying first and second additives for flocculating and precipitating the organic matter in the contaminated water to each of the plurality of polluted water purification apparatuses,
Each of the plurality of pollution control devices
A contaminated water storage tank connected to a polluted water inflow line and a purified water discharge line;
A water quality measuring unit for measuring a water quality in the polluted water storage tank; And
And a jetting unit for jetting the first and second additives into the contaminated water storage tank based on the measured water quality.
9. The method of claim 8,
Further comprising: a control unit for controlling operations of each of the at least one pollution water purification apparatus and the supply apparatus based on the measured water quality in the plurality of pollution water purification apparatuses.
10. The apparatus of claim 9, wherein the control unit
The purified water discharge line of the first pollution water purification apparatus is connected to the polluted water inflow line of the second pollution water purification apparatus based on the measured water quality after spraying the first and second additives in the first pollution water purification apparatus Or shutting off the polluted water.
10. The apparatus of claim 9, wherein the control unit
Wherein the at least one pollution control device selectively applies one of a serial connection, a parallel connection, or a combined connection in which a serial connection and a parallel connection are combined according to the at least one operation mode.
KR1020140075541A 2014-06-20 2014-06-20 Wastewater purifying device and wastewater purifying system KR101714117B1 (en)

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