KR20170079746A - Apparatus For Crystalizing MAP(Magnesium, Ammonium and Phosphate) Struvite And Method of Using The Same - Google Patents

Apparatus For Crystalizing MAP(Magnesium, Ammonium and Phosphate) Struvite And Method of Using The Same Download PDF

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KR20170079746A
KR20170079746A KR1020150190637A KR20150190637A KR20170079746A KR 20170079746 A KR20170079746 A KR 20170079746A KR 1020150190637 A KR1020150190637 A KR 1020150190637A KR 20150190637 A KR20150190637 A KR 20150190637A KR 20170079746 A KR20170079746 A KR 20170079746A
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South Korea
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urine
reactor
fresh water
map
struvite
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KR1020150190637A
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Korean (ko)
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서규태
서영민
성충열
장현희
권오환
장보경
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창원대학교 산학협력단
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Publication of KR20170079746A publication Critical patent/KR20170079746A/en

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    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • B01F7/16—
    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5254—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using magnesium compounds and phosphoric acid for removing ammonia
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F2001/5218—Crystallization
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/005—Black water originating from toilets
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

The present invention relates to a MAP (Magnesium, Ammonium and Phosphate) struvite crystallization apparatus suitable for separating and discharging urine from a toilet which is a source of domestic sewage to easily recover high concentration nitrogen and phosphorus from urine, Provide a method of use. The map Struyte crystallization apparatus 160 according to the present invention includes a detachable toilet 10 including a urine outlet 4 for supplying urine raw water and a faucet outlet 8 separated from the urine outlet 4; A urine storage tank (30) connected to the urine outlet (4) to receive the urine source water from the urine outlet (4) and generate urine (24) naturally hydrolyzed from the urine source water; A fresh water supply tank 50 for supplying fresh water 45 around the urine storage tank 30; And a crystallization reactor 115 connected to the urine storage tank 30 and the fresh water supply tank 50 through the central region of the upper surface.

Description

[0001] The present invention relates to a device for crystallizing a Struvite crystal and a method for using the same,

The present invention relates to a device for recovering nitrogen and phosphorus from domestic wastewater prior to the inflow of domestic wastewater, and more particularly, to a method and apparatus for separating the source of domestic wastewater and purifying nitrogen and phosphorus The present invention relates to a device for crystallizing a map struvite (MAP (Magnesium, Ammonium and Phosphate) Struvite) and suitable for recovering map struvite crystals in a short time, and a method of using the device.

Generally, municipal sewage refers to polluted water that flows into rivers after being used in daily life. The contaminated water is water containing various liquid or solid dirt discharged from a kitchen, a toilet and a bathroom of a home. Therefore, the domestic sewage is one of the three major pollutants polluting the natural water system together with industrial wastewater and livestock wastewater and contains high concentrations of nitrogen and phosphorus.

The nitrogen and phosphorus are present as nutrient salts in domestic wastewater, and they flow into the river together with the domestic wastewater to promote the growth of algae in the river, causing eutrophication and red tide. Recently, studies on the crystallization of struvite produced by injecting a magnesium source into the wastewater or wastewater have received attention. The study focuses on the removal of nitrogen and phosphorus from sewage or wastewater by supplying sewage or wastewater to the struvite crystallization reactor and injecting a magnesium source into the wastewater or wastewater.

However, since the sewage or wastewater is not separated from the source of domestic sewage, industrial wastewater or livestock wastewater, the struvite crystallization reaction tank has a complicated treatment structure for removing nitrogen and phosphorus from sewage or wastewater, As shown in FIG. Therefore, the wastewater or wastewater is not discharged separately from the sources of domestic sewage, industrial wastewater or livestock wastewater, so that the contamination phenomenon of the natural water system is increased through the river, and the complicated treatment step is carried out in the sewage treatment plant, .

Korean Patent Publication No. 10-2003-0034299

Disclosure of the Invention The present invention has been devised to solve the conventional problems, and it is an object of the present invention to provide a struvite crystallization reaction tank having a simple treatment structure so that urine can be separated and discharged from a toilet room, And which is suitable for operating a Struvite crystallization tank as a simple treatment step, and a method of using the apparatus.

The map Struyte crystallization apparatus 160 according to the present invention includes a waste fluid outlet 4 for supplying urine raw water and a waste water outlet 8 separated from the urine outlet 4 on the flow of the urine raw water, A toilet 10; A urine storage tank 30 connected to the urine outlet 4 below the detachable toilet 10 to receive the urine source water from the urine outlet 4 to generate a urine 24 which is naturally hydrolyzed from the urine source water; ); A fresh water supply tank 50 for supplying fresh water 45 around the urine storage tank 30; And a crystallization reactor (115) comprising an inverted conical cylinder below the urine storage tank (30) and connected to the urine storage tank (30) and the fresh water supply tank (50) through a central region of the upper surface, The crystallization reactor 115 supplies the natural hydrolyzate urine 24 from the fresh water supply tank 50 and the urine storage tank 30 at a ratio of 1:10 to the natural hydrolysis (MAP) struvite crystals (MS) for removing nitrogen and phosphorus from urine (24), which is produced by the microorganism.

Wherein the detachable toilet bowl 10 includes a urine discharge line 14 in the urine discharge port 4 and a feces discharge line 18 in the feces discharge port 8 and the urine discharge port 4 is connected to the urine discharge line 14 to communicate with the urine storage tank 30 and supply the urine source water to the urine storage tank 30 through a gravity flow.

The urine storage tank 30 can supply the natural hydrolyzed urine 24 to the crystallization reactor 115 through automatic valve control and gravity flow.

The naturally hydrolyzed urine (24) is produced from the urine source water by an urease contained in the urine source water, and the urine source water has a hydrogen ion concentration (pH) lower than the naturally hydrolyzed urine (24) Lt; / RTI >

The fresh water supply tank 50 can supply the fresh water 45 to the crystallization reactor 115 through automatic valve control and gravity flow.

The fresh water 45 is reverse osmosis (RO) concentrated water collected from a seawater desalination plant as a magnesium source, and the reverse osmosis concentrated water may have a magnesium concentration higher than seawater.

The crystallization reactor (115) is surrounded by a first sidewall extending from the central region of the upper surface toward the lower side of the upper surface to form an inverted conical cylinder, and is rotatable with respect to the upper surface And a first reactor 100 having a first sidewall 90 and an opening at a lower side of the first sidewall.

The crystallization reactor 115 has a second sidewall extending from the edge of the upper surface along the first sidewall of the first reactor 100 to shield the first reactor 100 from the outside, A second reactor (110) having an outlet tube (148) for draining urine from which the map struvite has been removed from the naturally hydrolyzed urine (24) on two side walls; And a pump 130 connected to the second reactor 110 under the second reactor 110 to recover the map struvite crystal MS through automatic valve control.

The map struvite crystallization apparatus 160 includes an alkaline supply tank 70 connected to the crystallization reactor 115 through the central region of the upper surface of the crystallization reactor 115; And a concentration sensing node (85) for measuring the hydrogen ion concentration of the naturally hydrolyzed urine (24) through the central region of the upper surface in the crystallization reactor (115), wherein the alkaline supply tank 70 may be automatically valve controlled in accordance with the hydrogen ion concentration value of the concentration sensing node 85 to supply the alkali solution 65 to the crystallization reactor 115 through a gravity flow.

The alkaline solution 65 can maintain the hydrogen ion concentration of the naturally hydrolyzed urine 24 more significantly after the alkali solution 65 reacts in the crystallization reactor 115 than before the naturally hydrolyzed urine 24 .

A method of using MAP struvite crystallization apparatus 160 according to the present invention includes a first step of supplying fresh water 45 to a fresh water supply tank 50; A second step of supplying the urine source water to the urine storage tank 30 using the gravity flow from the urine outlet port 4 of the detachable toilet 10; A third step of generating urine (24) naturally hydrolyzed from the urine source water in the urine storage tank (30); The fresh water 45 and the urine storage tank 30 are used to supply a natural water stream through the upper side of the first reactor 100 located inside the crystallization reactor 115 using the fresh water supply tank 50, A fourth step of sequentially supplying the decomposed urine 24 to the first reactor 100 at a ratio of 1:10; During the reaction of the fresh water 45 and the naturally hydrolyzed urine 24 on the lower side of the second reactor 110 surrounding the first reactor 100 in the crystallization reactor 115 a map Magnesiun, and Phosphate (MAP) struvite crystals (MS); And the pump 130 which communicates with the second reactor 110 to recover the map struvite crystals MS and remove the map struvite from the second reactor 110. In addition, In the second step.

Performing the first step includes supplying fresh water 45 from the seawater desalination plant to the fresh water supply tank 50 wherein the fresh water 45 has a concentration of magnesium of about 4000 mg / (RO) enriched water having a concentration of water.

Performing the third step comprises generating the naturally hydrolyzed urine (24) from the urine source water for at least 6 hours using the urease enzyme contained in the urine source water in the urine storage tank (30) The urine source water has a pH of about 7.0, and the naturally hydrolyzed urine 24 can have a hydrogen ion concentration of about 9.0.

The fourth step is performed by flowing the fresh water 45 from the fresh water supply tank 50 toward the first reactor 100 using automatic valve control and gravity flow, And the natural hydrolyzed urine 24 is flowed from the urine storage tank 30 toward the first reactor 100 through an automatic valve control and a gravity flow, Wherein the fresh water (45) and the naturally hydrolyzed urine (24) are supplied to the first reactor (100) at a ratio of 100 mL to 1 L, .

Performing the fifth step is located within the first reactor 100 to facilitate the reaction of the fresh water 45 and the natural hydrolyzed urine 24 in the first reactor 100 Wherein the rotatable stirrer 90 is rotated with respect to the first reactor 100 and the naturally hydrolyzed urine from the first reactor 100 toward the second reactor 110 during rotation of the stirrer 90, (MSP) are deposited on the lower side of the second reactor (110) after the rotation of the stirrer (90) is stopped, and the map struvite crystal grains And the stirrer 90 is rotated at a revolution speed of 150 rpm for 30 minutes of stirring time and the stacking of the map struvite crystal grains MSP is carried out at a revolution speed of 150 rpm It can proceed for 30 minutes after stopping the rotation .

The sixth step is performed by filling the urine from which the map struvite is removed between the first reactor 100 and the second reactor 110, The map struvite crystals MS are removed from the second reactor 110 using the pump 130 to remove the map struvite crystals MS from the exhaust pipe 148 of the second reactor 110, From the second reactor (110) until the effluent (148) of the second reactor (110) is displaced and the urine removed from the map struvite is placed in the second reactor (110) And removing the map struvite by removing the map struvite (MS) and the map struvite after the fifth step, and the pump 130 partially draining the map struvite-The service every hour can be recovered in two minutes of about 200mL.

The method of using the MAP struvite crystallization apparatus 160 may further include the step of supplying the alkaline agent after the sequential supply of the fresh water 45 and the naturally hydrolyzed urine 24 during the fourth step, The method of claim 1, further comprising supplying an alkaline solution (65) to the first reactor (100) using a tank (70), wherein the alkali solution (65) comprises sodium hydroxide (NaOH) and the naturally hydrolyzed urine (MS) is higher than the mixed state of the fresh water (45) and the naturally hydrolyzed urine (24) on the lower side of the second reactor (110) More of the fresh water 45, the naturally hydrolyzed urine 24 and the alkali solution 65 may be mixed.

The present invention relates to a method for storing a urine source water discharged from a separate type toilet, which separates urine and feces, into a urine storage tank and naturally hydrolyzing the urine source water using an urease enzyme contained in the urine source water, (About pH 9.0), which has a higher pH than hydrogen (about pH 7.0), can easily crystallize a large amount of nitrogen and phosphorus from natural hydrolyzed urine in the crystallization reactor have.

The present invention relates to a method for hydrolyzing a first urine raw water sufficiently filled with a urine storage tank at the initial connection of a urine storage tank to a removable urinal for 3 days by using an urease contained in urine raw water, It is natural to hydrolyze urine source water for 6 hours using the residue of the first urine raw water, which can reduce the time required to crystallize nitrogen and phosphorus from the natural hydrolyzed urine in the crystallization reactor.

The present invention utilizes a natural hydrolyzed urine having a higher hydrogen ion concentration than the urine source water in a crystallization reactor and is used in fresh water (magnesium concentration of about 4000 mg / L) having a magnesium concentration higher than seawater (about 1350 mg / L of magnesium concentration) It is possible to reduce the amount of fresh water used to crystallize the map Struvite from nitrogen and phosphorus from the urine naturally hydrolyzed in the crystallization reactor.

The present invention relates to a process for the recovery of urine from urine storage tanks to urine storage tanks, from urine storage tanks to crystallization reactors, from urine storage tanks to urine, from the fresh water supply tanks to the crystallization reactors, The alkaline solution flows through the gravity flow so that the number of pumps used can be reduced to simplify the structure around the crystallization reactor.

The present invention relates to a process for the recovery of urine from urine storage tanks to urine storage tanks, from urine storage tanks to crystallization reactors, from urine storage tanks to urine, from the fresh water supply tanks to the crystallization reactors, The operation of the crystallization reactor can be controlled remotely by flowing the alkali solution through automatic valve control.

The present invention utilizes natural hydrolyzed urine having a hydrogen ion concentration higher than urine source water in a crystallization reactor and uses fresh water having a magnesium concentration higher than seawater, so that the amount of alkali solution discharged from the alkaline supply tank can be reduced.

The present invention provides a crystallization reactor in which fresh and natural hydrolyzed urine and alkali solutions are sequentially and gravity fed to recover the map struvite crystals in a short period of time, thereby simplifying the structure of the crystallization reactor and simplifying the crystallization reactor .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an apparatus for crystallizing a map struvite according to the present invention; FIG.
Figs. 2 to 4 are schematic diagrams illustrating a method of using the Map Struvite crystallization apparatus of Fig. 1. Fig.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views, and length and area, thickness, and the like may be exaggerated for convenience.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an apparatus for crystallizing a map struvite according to the present invention; FIG.

1, the map Struyte crystallization apparatus 160 according to the present invention includes a detachable toilet 10, a urine storage tank 30, a fresh water supply tank 50, a crystallization reactor 115 and a controller 150, . The detachable toilet 10 includes a urine outlet 4 for supplying urine raw water and a faucet outlet 8 for separating from the urine outlet 4 on the flow of urine raw water.

Preferably, the detachable toilet 10 includes a urine discharge line 14 in the urine outlet 4 and a feces discharge line 18 in the feces discharge 8. The urine outlet 4 communicates with the urine storage tank 30 through the urine discharge line 14 and can supply urine raw water to the urine storage tank 30 through a gravity flow have.

The urine source water refers to urine discharged directly from a person after human metabolism, and contains nitrogen and phosphorus at a high concentration. The urine source water provides more than 50% of the nitrogen contained in domestic sewage. The urine storage tank 30 is connected to the urine outlet 4 below the detachable toilet 30 when viewed on the gravitational flow of the urine source water. Preferably, the urine storage tank 30 receives the urine source water from the urine outlet 4 and stores the urine source water.

More preferably, the urine storage tank 30 naturally hydrolyzes the urine source water by the urease contained in the urine source water to generate a naturally hydrolyzed urine 24. The urine storage tank 30 is connected to the crystallization reactor 115 through a urine supply valve 34 and a urine supply line 38. The urine supply valve 34 controls the flow of the naturally hydrolyzed urine 24 flowing through the urine supply line 38.

Specifically, when the natural hydrolyzed urine 24 contacts the limit switch 28 located inside the urine storage tank 30, the controller 150 controls the electric signal of the limit switch 28 And the urine storage tank 30 is controlled by the automatic valve control and the gravity flow to urge the natural hydrolyzate urine 24 into the crystallization reactor 115 .

Alternatively, when the natural hydrolyzed urine 24 is not in contact with the limit switch 28 within the urine storage tank 30, the controller 150 may transmit the electrical signal of the limit switch 28 to the non- The urine supply valve 34 is automatically controlled to be closed from the open state.

The fresh water supply tank 50 includes a fresh water storage line 53 and a fresh water supply line 59 around the urine storage tank 30. The fresh water storage line 53 supplies fresh water 45 collected from a seawater desalination plant (not shown) to a fresh water supply tank 50. Preferably, the fresh water supply tank 50 is connected to the crystallization reactor 115 through a fresh water supply valve 56 and a fresh water supply line 59.

The fresh water supply valve 56 controls the flow of the fresh water 45 flowing through the fresh water supply line 59. More specifically, when the urine supply valve 34 is in the open state, the controller 150 automatically controls the fresh water supply valve 56 from the closed state to the open state, and the fresh water supply tank 50 is automatically controlled The fresh water 45 can be supplied to the crystallization reactor 115 through valve control and gravity flow.

Alternatively, when the urine supply valve 34 is mechanically converted from the open state to the closed state, the controller 150 automatically controls the fresh water supply valve 56 from the open state to the closed state. Here, the fresh water 45 is a reverse osmosis (RO) concentrated water collected from a seawater desalination plant as a magnesium source, and the reverse osmosis concentrated water has a magnesium concentration higher than seawater.

The crystallization reactor 115 comprises an inverted conical cylinder below the urine storage tank 30 and is connected to the urine storage tank 30 and the fresh water supply tank 50 through the central region of the upper surface. In detail, the crystallization reactor 115 includes a first reactor 100, a second reactor 110, and a pump 130.

The first reactor 100 has an agitator surrounded by a first sidewall extending from the central region of the upper surface toward the lower side of the upper surface to form an inverted conical cylinder and passing through the upper surface and rotatable about the upper surface, And is opened at the lower side of the side wall.

The second reactor 110 has a second sidewall extending from the edge of the upper surface of the first reactor 100 along the first sidewall of the first reactor 100 to shield the first reactor 100 from the outside, And a discharge pipe 148. The discharge pipe 148 has a urine discharge valve 144.

The crystallization reactor 115 is supplied with fresh water (45) from the fresh water supply tank (50) and urine (24) naturally hydrolyzed from the urine storage tank (30) at a ratio of 1:10, (MAP) struvite crystals (MS) for removing nitrogen and phosphorus from the catalyst layer 24 can be produced.

The pump 130 is connected to the second reactor 110 under the second reactor 110 and is connected between the second reactor 110 and the pump 130 by a controller 150 The true exhaust vent valve 124 is located. Specifically, after the MAP struvite crystals MS are generated on the lower side of the second reactor 110, the controller 150 controls the struvite discharge valve 124 in consideration of the passage of time, The pump 130 can automatically recover the map struvite crystals MS from the second reactor 110. In this case,

After the map struvite crystal (MS) is recovered from the second reactor 110, the controller 150 controls the struvite discharge valve 124 from the open state to the closed state by automatic valve control . The discharge pipe 148 is capable of draining the urine from which the map struvite has been removed from the urine 24 naturally hydrolyzed between the first reactor 100 and the second reactor 110 to the outside of the crystallization reactor 115 have.

The urine discharge valve 144 is controlled by the controller 150 to automatically control the flow of urine by removing the map struvite flowing from the second reactor 110 toward the outside of the second reactor 110.

Meanwhile, the map Struyte crystallization apparatus 160 according to the present invention may further include an alkaline supply tank 70 and a concentration sensing node 85. The alkaline supply tank 70 may be connected to the crystallization reactor 115 through the central region of the upper surface of the crystallization reactor 115. Preferably, the alkaline supply tank 70 may include an alkaline storage line 73 and an alkaline supply line 79.

The alkaline agent storage line 73 can receive an alkaline aqueous solution (NaOH) from the outside and store the alkaline solution 65 in the alkaline agent supply tank 70. The alkaline supply line 79 may have an alkaline supply valve 76 that communicates the alkaline supply tank 70 with the crystallization reactor 115 and is automatically valve controlled by the controller 150.

The concentration sensing node 85 may transmit the electrical value to the controller 150 by measuring the hydrogen ion concentration of the naturally hydrolyzed urine 24 through the central region of the upper surface in the crystallization reactor 115. Here, the alkaline supply tank 70 is automatically controlled by the controller 150 according to the hydrogen ion concentration value of the concentration sensing node 85, and supplies the alkali solution 65 to the crystallization reactor 115 through the gravity flow .

The alkali solution 65 can maintain the hydrogen ion concentration of the natural hydrolyzate urine 24 even more after the reaction with the alkaline solution 65 before reacting with the urine 24 naturally hydrolyzed in the crystallization reactor 115.

Figs. 2 to 4 are schematic diagrams illustrating a method of using the Map Struvite crystallization apparatus of Fig. 1. Fig.

Referring to FIG. 2, a method of using the MAP struvite crystallization apparatus (160 in FIG. 1) according to the present invention is a method of supplying fresh water (45 in FIG. 1) to a fresh water supply tank And performing the first step. Performing the first step comprises supplying fresh water 45 from a seawater desalination plant (not shown) to a fresh water supply tank 50, wherein the fresh water 45 has a concentration of magnesium of about 4000 (R O) concentration having a concentration (mg / L) of water.

After the first step is carried out, the second step of supplying the urine source water to the urine storage tank (30 in Fig. 1) using the gravity flow from the urine outlet (4 in Fig. 1) Step can be performed. After the second step is performed, a third step of generating urine 24 that is naturally hydrolyzed from the urine source water in the urine storage tank 30 may be performed.

Performing the third step may include generating urine naturally hydrolyzed urine from the urine source water for at least 6 hours using urease contained in the urine source water in the urine storage tank 30, (PH) of the natural hydrolyzed urine, and the natural hydrolyzed urine may have a hydrogen ion concentration of about 9.0.

After the third step is performed, the fresh water 45 and the urine storage tank (not shown) are introduced into the crystallization reactor 115 through the upper side of the first reactor 110 located inside the crystallization reactor 115, 30) to the first reactor 100 at a ratio of 1: 10 to the urine 24, which is naturally hydrolyzed.

Performing the fourth step may be accomplished by controlling the flow rate of the fresh water from the fresh water supply tank 50 toward the first reactor 100 through the automatic flow control for the fresh water supply valve 56, (45) is supplied to the first reactor (100) to supply fresh water (45), automatic valve control for the urine supply valve (34) from the urine storage tank (30) toward the first reactor (100) And feeding the natural hydrolyzed urine 24 to the first reactor 100 by flowing the natural hydrolyzed urine 24 along the second flow line F2.

Here, the fresh water 45 and the naturally hydrolyzed urine 24 may be supplied to the first reactor 100 at a ratio of 100 mL to 1 L. After the fourth step is performed, the reaction of the natural hydrolyzate urine (24) with the fresh water (45) is performed on the lower side of the second reactor (110) surrounding the first reactor (100) in the crystallization reactor (115) A fifth step of generating Magnesiun, Ammonium and Phosphate (MAP) struvite crystals may be performed.

Performing the fifth step may be carried out in a first reactor 100 to be located inside the first reactor 100 to facilitate the reaction of the fresh water 45 and the naturally hydrolyzed urine 24 in the first reactor 100, 100 is rotatable in a predetermined direction R and the urine 24 which has been naturally hydrolyzed from the first reactor 100 toward the second reactor 110 during rotation of the stirrer 90, (MSPs) on the bottom side of the second reactor 100 after the rotation of the stirrer 90 has stopped.

Here, the stirrer 90 is rotated at a revolution speed of 150 rpm for 30 minutes, and the stacking of the map struvite crystal grains (MSP) is continued for 30 minutes after stopping the rotation of the stirrer 90 Lt; / RTI > The fresh water 45 and the hydrolyzed urine 24 partially fill the first reactor 100 and have a first surface S1 in the first reactor 100 and a second reactor S1 from the first reactor 100, Flows along the fourth flow line F4 toward the first reactor 110 and has the second surface S2 in the second reactor 110 and flows from the second reactor 110 toward the first reactor 100 through the fifth flow line F2, (S3) along the first surface (F5) between the first reactor (100) and the second reactor (110).

3 and 4, while the fifth step is performed, the fresh water 45 and the naturally hydrolyzed urine 24 are sufficiently filled in the first reactor 100 to be supplied to the first reactor 100 A fourth surface S4 is formed and a fifth surface S5 is formed between the first reactor 100 and the second reactor 110 along the fourth preliminary flow line F41 and the fifth preliminary flow line F51 .

While the fourth face S4 and the fifth face S5 are formed in the first reactor 100 and the second reactor 110, the map struvite crystal particles (MSP) To form map struvite crystals MS and to form map struvite-free urine between the first reactor 100 and the second reactor 110.

After the fifth step is performed, a map struvite crystal (MS) is recovered by using a pump (130) communicating with the second reactor (110) A sixth step of partially draining the urine from which the urine is removed can be performed.

Performing the sixth step may be accomplished by filling the urine from which the map struvite has been removed between the first reactor 100 and the second reactor 110, And the urine discharged from the second reactor 110 together with the map struvite crystal MS together with the map struvite is discharged through the sixth flow line F6 To the struvite discharge line 124 from the second reactor 110 until it is partially recycled and the map struvite removed urine is placed under the discharge tube 148 of the second reactor 110. [ Automatic valve control, and partial drainage of the map struvite-removed urine using a gravity flow along the seventh flow line F7.

3, the pump 130 can recover about 200 mL of the urine from which the map struvite crystals (MS) and the map struvite are removed every two hours for about two minutes. Here, after the map struvite crystals (MS) and the map struvite-free urine are collected, the fresh water (45), the natural hydrolyzed urine (24) and the map struvite- The fourth surface S4 and the fifth surface S5 are lowered in the first reactor 100 and the second reactor 110 so that the seventh surface S7 and the fifth surface S5 are formed along the fifth post flow line F52, And six surfaces S6, respectively.

After the urine removed from the map struvite crystals (MS) and the map struvite is recovered, the first to sixth steps of FIGS. 2 to 4 may be performed again. Meanwhile, during the fourth step, alkali water is supplied to the first reactor 100 using an alkaline supply tank (70 in FIG. 1) after the sequential supply of the fresh water 45 and the natural hydrolyzed urine 24, And supplying the solution (65 in Fig. 1) along the third flow line F3.

The alkaline solution 65 contains sodium hydroxide (NaOH) and increases the hydrogen ion concentration of the naturally hydrolyzed urine 24. The map struvite crystals MS are formed on the lower side of the second reactor 110 The mixed state of the fresh water 45 and the natural hydrolyzed urine 24 and the alkaline solution 65 can be generated more than the mixed state of the fresh water 45 and the natural hydrolyzed urine 24.

4; Urine outlet, 10; Detachable toilet bowl
24; Natural hydrolyzed urine, 30; Urine storage tank
45; Fresh water, 50; Fresh water supply tank
65; Alkali solution, 70; Alkali agent supply tank
85; Concentration sensing node, 100; The first reactor
110; A second reactor, 115; Crystallization reactor
130; Pump 150; Controller
160; Map Struvite crystallization apparatus

Claims (17)

A detachable toilet bowl (10) comprising a urine outlet (4) for supplying urine raw water and a faucet outlet (8) separated from the urine outlet (4) on the flow of the urine raw water;
A urine storage tank 30 connected to the urine outlet 4 below the detachable toilet 10 to receive the urine source water from the urine outlet 4 to generate a urine 24 which is naturally hydrolyzed from the urine source water; );
A fresh water supply tank 50 for supplying fresh water 45 around the urine storage tank 30; And
And a crystallization reactor (115) made of an inverted conical cylinder below the urine storage tank (30) and connected to the urine storage tank (30) and the fresh water supply tank (50) through a central region of the upper surface,
The crystallization reactor 115 supplies the natural hydrolyzate urine 24 at a ratio of 1:10 from the fresh water supply tank 50 to the fresh water 45 and the urine storage tank 30, (MAP) struvite crystallization apparatus (160) for generating a map (Magnesium, Ammonium and Phosphate; MAP) struvite crystal (MS) for removing nitrogen and phosphorus from the decomposed urine ).
The method according to claim 1,
Wherein the detachable toilet bowl 10 includes a urine discharge line 14 in the urine discharge port 4 and a feces discharge line 18 in the feces discharge port 8,
The urine outlet 4 communicates with the urine storage tank 30 via the urine discharge line 14 and supplies the urine source water to the urine storage tank 30 through a gravity flow. A struvite crystallization device.
The method according to claim 1,
Wherein the urine storage tank (30) supplies the natural hydrolyzed urine (24) to the crystallization reactor (115) through automatic valve control and gravity flow.
The method according to claim 1,
The naturally hydrolyzed urine (24) is produced from the urine source water by an urease contained in the urine source water,
Wherein the urine source water has a hydrogen ion concentration (pH) lower than the naturally hydrolyzed urine (24).
The method according to claim 1,
Wherein the fresh water supply tank (50) supplies the fresh water (45) to the crystallization reactor (115) through automatic valve control and gravity flow.
The method according to claim 1,
The fresh water 45 is reverse osmosis (RO) concentrated water collected from a seawater desalination plant as a magnesium source,
Wherein the reverse osmosis concentrated water has a concentration of magnesium higher than that of seawater.
The method according to claim 1,
The crystallization reactor (115)
And an agitator (90) enclosed by a first sidewall extending from the central region of the upper surface toward an underneath of the upper surface to form an inverted conical cylinder, the agitator being rotatable about the upper surface through the upper surface, And a first reactor (100) which is opened at a lower side of the first sidewall.
8. The method of claim 7,
The crystallization reactor (115)
And a second sidewall extending from the edge of the upper surface along the first sidewall of the first reactor (100) to shield the first reactor (100) from the outside, wherein the second sidewall A second reactor (110) having an outlet tube (148) for draining urine from which the map struvite is removed from the urine (24); And
Further comprising a pump (130) connected to the second reactor (110) below the second reactor (110) to recover the map struvite crystal (MS) through automatic valve control .
The method according to claim 1,
An alkaline feed tank (70) connected to the crystallization reactor (115) through the central region of the upper surface of the crystallization reactor (115); And
And a concentration sensing node (85) for measuring the hydrogen ion concentration of the naturally hydrolyzed urine (24) through the central region of the upper surface in the crystallization reactor (115)
The alkaline solution supply tank 70 is automatically valve controlled in accordance with the hydrogen ion concentration value of the concentration sensing node 85 to supply the alkaline solution 65 to the crystallization reactor 115 through a gravity flow. Struvite crystallization apparatus.
10. The method of claim 9,
The alkaline solution 65 is characterized in that it further maintains the hydrogen ion concentration of the naturally hydrolyzed urine 24 after reacting in the crystallization reactor 115 before the naturally hydrolyzed urine 24 Of the total amount of the solution.
A first step of supplying fresh water 45 to the fresh water supply tank 50;
A second step of supplying the urine source water to the urine storage tank 30 using the gravity flow from the urine outlet port 4 of the detachable toilet 10;
A third step of generating urine (24) naturally hydrolyzed from the urine source water in the urine storage tank (30);
The fresh water 45 and the urine storage tank 30 are used to supply a natural water stream through the upper side of the first reactor 100 located inside the crystallization reactor 115 using the fresh water supply tank 50, A fourth step of sequentially supplying the decomposed urine 24 to the first reactor 100 at a ratio of 1:10;
During the reaction of the fresh water 45 and the naturally hydrolyzed urine 24 on the lower side of the second reactor 110 surrounding the first reactor 100 in the crystallization reactor 115 a map Magnesiun, and Phosphate (MAP) struvite crystals (MS); And
The MAP struvite crystals MS are recovered by using the pump 130 communicating with the second reactor 110 and the urine discharged from the second reactor 110 is partially removed And a sixth step of draining the mixture.
12. The method of claim 11,
Performing the first step may include:
And supplying fresh water (45) collected from a seawater desalination plant to the fresh water supply tank (50)
Wherein the fresh water (45) is a reverse osmosis (RO) concentrated water having a magnesium concentration of about 4000 (mg / L).
12. The method of claim 11,
Performing the third step,
And producing the naturally hydrolyzed urine (24) from the urine source water for at least 6 hours using the urease enzyme contained in the urine source water in the urine storage tank (30)
The urine source water has a hydrogen ion concentration (pH) of about 7.0,
Wherein the naturally hydrolyzed urine (24) has a hydrogen ion concentration of about 9.0.
12. The method of claim 11,
Performing the fourth step may include:
The fresh water 45 is supplied to the fresh water supply tank 50 by flowing the fresh water 45 from the fresh water supply tank 50 toward the first reactor 100 by automatic valve control and gravity flow ,
The natural hydrolyzed urine (24) is flowed from the urine storage tank (30) toward the first reactor (100) using an automatic valve control and a gravity flow to the first reactor (100) (24), wherein the urine
Wherein the fresh water (45) and the naturally hydrolyzed urine (24) are supplied to the first reactor (100) at a ratio of 100 mL to 1 L.
12. The method of claim 11,
Performing the fifth step may include:
The first reactor 100 is positioned inside the first reactor 100 to facilitate the reaction of the fresh water 45 and the natural hydrolyzed urine 24 in the first reactor 100, The rotatable stirrer 90 is rotated,
(MSP) from the naturally hydrolyzed urine (24) from the first reactor (100) toward the second reactor (110) during rotation of the stirrer (90)
And stacking the map struvite crystal grains (MSP) on the lower side of the second reactor (110) after the rotation of the stirrer (90) is stopped,
The stirrer 90 is rotated at a revolution number of 150 rpm for 30 minutes of stirring time,
Wherein the lamination of the map struvite crystal grains (MSP) proceeds for 30 minutes after the rotation stop of the stirrer (90).
12. The method of claim 11,
Performing the sixth step may include:
The urine from which the map struvite is removed is filled in the first reactor 100 and the second reactor 110 to remove the map struvite from the discharge tube of the second reactor 110 148,
The map struvite crystals (MS) are removed from the second reactor (110) using the pump (130) to partially recover the urine from which the map struvite has been removed,
The second reactor (110) is controlled by an automatic valve control and gravity flow from the second reactor (110) until the urine removed from the map struvite is placed under the discharge tube (148) of the second reactor Partially draining urine removed from truvite,
Wherein the pump 130 recovers about 200 mL of the map struvite crystals (MS) and urine removed from the map struvite in every two hours after the fifth step. .
12. The method of claim 11,
The alkaline solution 65 is supplied to the first reactor 100 using the alkaline supply tank 70 after the sequential supply of the fresh water 45 and the naturally hydrolyzed urine 24 during the fourth step ), ≪ / RTI >
The alkaline solution 65 contains sodium hydroxide (NaOH) and increases the hydrogen ion concentration of the naturally hydrolyzed urine 24,
The map struvite crystals MS are formed in such a manner that the mixed state of the fresh water 45 and the natural hydrolyzed urine 24 at the lower side of the second reactor 110 is greater than the mixed state of the fresh water 45, Wherein a mixed state of the decomposed urine (24) and the alkaline solution (65) is more generated.
KR1020150190637A 2015-12-31 2015-12-31 Apparatus For Crystalizing MAP(Magnesium, Ammonium and Phosphate) Struvite And Method of Using The Same KR20170079746A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110386697A (en) * 2019-08-21 2019-10-29 长沙理工大学 A kind of method for treating residual water for dredging and processing unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110386697A (en) * 2019-08-21 2019-10-29 长沙理工大学 A kind of method for treating residual water for dredging and processing unit
CN110386697B (en) * 2019-08-21 2022-02-11 长沙理工大学 Method and device for treating dredging residual water

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