KR20160047934A - Apparatus and method for treating graywater - Google Patents

Apparatus and method for treating graywater Download PDF

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Publication number
KR20160047934A
KR20160047934A KR1020140144506A KR20140144506A KR20160047934A KR 20160047934 A KR20160047934 A KR 20160047934A KR 1020140144506 A KR1020140144506 A KR 1020140144506A KR 20140144506 A KR20140144506 A KR 20140144506A KR 20160047934 A KR20160047934 A KR 20160047934A
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South Korea
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tank
disinfection
effluent
mbr
upflow anaerobic
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KR1020140144506A
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Korean (ko)
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안규홍
정경원
정태운
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한국과학기술연구원
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Priority to KR1020140144506A priority Critical patent/KR20160047934A/en
Publication of KR20160047934A publication Critical patent/KR20160047934A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

The present invention relates to a heavy water treating apparatus and method capable of effectively removing an organic matter, nitrogen, and phosphorus when heavy water is treated. According to the present invention, the heavy water treating apparatus comprises: an upstream anaerobic bioreactor separating domestic sewage in an anaerobic treatment container into outflowing water, an organic matter, and a microorganism from the domestic sewage; an MBR bath removing total solids and inducing nitrification by using a separation membrane module with respect to the outflowing water in the upstream anaerobic bioreactor as a target; and a sterilization-adsorption tank adsorbing phosphorus included in treated water of the MBR bath and sterilizing organic impurities inside the treated water. The upstream anaerobic bioreactor includes a distributing plate and a plurality of three-phase separating membranes. The distributing plate is equipped in the lower part of the upstream anaerobic bioreactor. Therefore, the domestic sewage flowing upwards is uniformly dispersed and formation of vortex is induced to uniformly anaerobic treat the entire domestic sewage inside the anaerobic bioreactor. The plurality of three-phase separating membranes are equipped vertically at a distance away inside the upstream anaerobic bioreactor. Therefore, the domestic sewage inside the anaerobic bioreactor is separated into outflowing water, an organic matter, and a microorganism.

Description

[0001] Apparatus and method for treating graywater [

The present invention relates to a heavy water treatment apparatus and method, and more particularly, to a heavy water treatment apparatus and method capable of effectively removing organic matter, nitrogen, and phosphorus in the treatment of heavy water.

The backwater system refers to a facility that treats household wastewater generated in the home to be reused. The water treated in the heavy water system is called heavy water, and the heavy water is used for urban recycled water and landscape water. In recent years, the need for water depot systems has been rising due to water shortage, and policy diffusion is encouraging.

Water treatment processes used in the backwater system include microbial treatment, physico-chemical treatment, and membrane filtration treatment. Korean Patent No. 1055841 discloses a technique for a water-repelling purification system comprising a plurality of filters, and Korean Patent No. 1162614 discloses a technique in which microbial treatment and membrane filtration treatment are mixed.

On the other hand, the management of nitrogen and phosphorus in heavy water is also required as water quality standards of heavy water are strengthened, and conventional heavy water systems have difficulties in meeting such requirements.

Korea Patent No. 1055841 Korea Patent No. 1162614

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a heavy water treatment apparatus and method capable of effectively removing organic matter, nitrogen and phosphorus in the treatment of heavy water.

In order to achieve the above object, the present invention provides an apparatus for treating heavy water, comprising: an upflow anaerobic reaction tank for anaerobic treatment of domestic sewage and separating domestic wastewater into effluent, organic matter and microorganisms; and an effluent of the upflow anaerobic tank An MBR tank for removing total solids by using a membrane module and inducing nitrification reaction and a disinfection-adsorbing tank for adsorbing phosphorus contained in the treated water of the MBR tank and disinfecting organic impurities in the treated water Wherein the upflow anaerobic reaction tank comprises a dispersion plate and a plurality of three-phase separation membranes, and the dispersion plate is provided below the upflow anaerobic reaction tank to uniformly disperse the domestic wastewater flowing in an upward flow, Thereby to uniformly anaerobically treat the entire living sewage in the anaerobic reaction tank, It is provided spaced apart in the vertical direction inside the counter-current type anaerobic reaction tank, and the sewage in an anaerobic reactor wherein the separation in the effluent, and microbial organisms.

Wherein the separating member is formed in a triangular prism shape having an open bottom, the opening portion of the separating member is provided so as to face downward, The organic matter and microorganisms contained in the domestic wastewater are filtered by the separation member, and the domestic wastewater filtered by the organic matter and the microorganism is moved upward through the outflow opening between the separation member and the separation member.

The plurality of three-phase separation membranes are spaced apart from each other in the upflow anaerobic reaction tank, and the separation members of the neighboring three-phase separation membranes are provided orthogonally to each other. In addition, a fluid carrier is further included in the MBR tank.

The separation membrane case is provided with an installation space for the separation membrane module and a surface of the separation membrane case is provided with an effluent supply hole for allowing the transfer of the effluent to the separation membrane module.

Wherein the disinfection-adsorptive tank is filled with a phosphorus-adsorbing filter material for adsorbing dissolved phosphorus, and a cathode and an anode electrode for electrolysis are provided at one side of the disinfection-adsorption bath, and the treated water and the sodium chloride on when power to electrode while the product is water and the sodium chloride is electrolyzed car acid (OCl -), and the hypo-chlorite (HOCl -) is generated, the generated difference hypochlorite (OCl - -) and the hypo-chlorite (HOCl) The organic impurities in the treated water are disinfected. In addition, a sodium chloride supply unit for supplying sodium chloride (NaCl) to the disinfection-adsorption tank may be further provided on one side of the disinfection-adsorption tank.

The heavy water treatment method according to the present invention is a heavy water treatment method using an upflow anaerobic tank operated by an anaerobic tank, an MBR tank operated under aerobic conditions, and a disinfection-absorbing tank, Wherein the effluent of the upflow anaerobic reaction tank is supplied to the MBR tank so that the effluent of the MBR tank is separated from the effluent of the upflow anaerobic tank by the three-phase separation membrane in the upflow anaerobic tank, Wherein the nitrification reaction proceeds with the removal of total solids in the effluent water by the separation membrane module and the treatment water of the MBR tank is supplied to the disinfection-adsorption tank and the dissolved water contained in the dissolved water in the disinfection- (OCl - ) and hypochlorous acid (HOCl - ), which are adsorbed on adsorbent media and produced by electrolysis And disinfecting the organic impurities in the treated water of the MBR tank.

The heavy water treatment apparatus and method according to the present invention have the following effects.

In the treatment of sewage water in domestic sewage, domestic wastewater can be treated sequentially through an upflow anaerobic tank, an MBR tank, and a disinfection-adsorbing tank to effectively remove nitrogen and phosphorus as well as organic substances contained in domestic sewage.

1 is a configuration diagram of a heavy water treatment apparatus according to an embodiment of the present invention;
2A and 2B are plan views of a three-phase separation membrane.
3 is a reference view showing the operation of the upflow anaerobic reactor.
2 is a perspective view showing a separation membrane case;

The present invention relates to a heavy water treatment apparatus capable of effectively removing nitrogen and phosphorus as well as organic substances contained in domestic wastewater through an upflow anaerobic tank, an MBR tank, and a disinfection-adsorbing tank, thereby satisfying water quality standards for nitrogen and phosphorus . In the present invention, 'living sewage' may refer to tap water used in households, commercial buildings, and the like, and manure is excluded. Hereinafter, a heavy water treatment apparatus and method according to an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, the heavy water treatment apparatus according to an embodiment of the present invention includes an upflow anaerobic tank 10, an MBR tank 20, and a disinfection-adsorbing tank 30.

The upflow anaerobic reaction tank 10 performs anaerobic treatment of domestic wastewater to induce denitrification and release of phosphorus, and separates and removes organic matter contained in domestic wastewater. The upflow anaerobic reactor 10 may have a cylindrical shape. The upflow anaerobic reactor 10 includes a dispersion plate 110 and a plurality of three-phase separation membranes 120.

The dispersion plate 110 is provided in the lower part of the upflow anaerobic reactor 10 to uniformly disperse the municipal wastewater flowing in the upward flow and induce vortex formation to uniformly distribute the entire wastewater in the reactor 10 To be anaerobically treated. The dispersion plate 110 may have a dome shape. The plurality of three-phase separation membranes 120 are vertically spaced apart from each other in the upflow anaerobic reactor 10 to separate living sewage in the reactor 10 into effluent, organic matter, and microorganisms.

The three-phase separation membrane 120 includes a plurality of separation members 121 spaced apart in the horizontal direction. The separating member 121 has a triangular prism shape having an open bottom and is provided with an opening of the separating member 121 facing downward. Organic matter and microorganisms contained in the domestic wastewater are separated by the separation member 121. Domestic wastewater from which organic matter and microorganisms are filtered is separated from the space between the separation member 121 and the separation member 121, Respectively.

The plurality of three-phase separation membranes 120 are spaced apart from each other in the upflow anaerobic reaction tank 10, and the separation members 121 of the neighboring three-phase separation membranes 120 are provided orthogonally to each other. In one embodiment, when the first three-phase separation membrane (see FIG. 2A) and the second three-phase separation membrane (see FIG. 2B) are provided from the lower end of the upflow anaerobic reaction tank 10, The separating member of the separator is provided in an orthogonal form. The reason why the separating members 121 of the neighboring three-phase separator 120 are arranged in an orthogonal form is that the positions of the outflow openings 122 of the first three-phase separator 120 and the second three- Thereby improving the efficiency of separation of organic substances and microorganisms.

The domestic wastewater flowing upward in the upflow anaerobic reactor 10 is converted into a vortex by the dispersion plate 110 and dispersed therein. The domestic wastewater which has passed through the dispersion plate 110 flows upward in the reaction tank 10 And sequentially passed through the first three-phase separation membrane 120 and the second three-phase separation membrane 120 to be separated into effluent, organic matter and microorganisms. The effluent is moved upward through the outflow opening 122 of the three-phase separation membrane 120, and organic matter and microorganisms are collected by the separation member 121 of the three-phase separation membrane 120 (see FIG. 3). As the upflow of the domestic wastewater is transferred in the upflow anaerobic tank 10, the effluent water, organic matter and microorganisms can be effectively separated.

Meanwhile, as described above, the upflow anaerobic reaction tank 10 is operated by the anaerobic tank. As a result, the anaerobic treatment of domestic wastewater proceeds in the upflow anaerobic tank 10, and denitrification and phosphorus release by microorganisms proceed. The microorganisms in the upflow anaerobic reaction tank 10 are included in the return water of the MBR tank 20 to be described later and supplied to the upflow anaerobic reaction tank 10.

Next, the MBR tank 20 (membrane bioreactor) receives the effluent of the upflow anaerobic tank 10 and filters the separated effluent using the membrane module 210. Also, the MBR tank 20 is operated under aerobic conditions to induce nitrification of ammonia nitrogen to nitrate nitrogen. At this time, the gravity drop method may be used to supply the effluent from the upflow anaerobic tank 10 to the MBR tank 20.

In the MBR tank 20, a separation membrane module 210 is provided and the separation membrane module 210 removes the total solids SS contained in the effluent of the upflow anaerobic reaction tank 10. In addition, an air diffusing pipe 220 is provided under the MBR tank 20 for maintaining aerobic conditions.

In addition, a fluid carrier 230 is provided in the MBR tank 20. The fluid carrier 230 flows according to the flow of the effluent in the MBR tank 20 and the contaminants on the surface of the separation membrane module 210 are desorbed by the flow of the fluid carrier 230, Ring phenomenon can be alleviated. Microorganisms inducing a nitrification reaction adhere to and grow on the surfaces and pores of the fluid carrier (230). The fluid carrier 230 may have a porous form for microorganisms and may be made of an organic polymer material such as polyurethane, polypropylene, or polyethylene in order to prevent the membrane from being damaged by friction with the surface of the separation membrane. Meanwhile, the separation membrane module 210 may be mounted in a predetermined separation membrane case 240 to reduce the possibility that the surface of the separation membrane module 210 is damaged by the fluid carrier 230 (see FIG. 4). The separation membrane case 240 provides a mounting space for the separation membrane module 210 and an outlet water supply hole 241 is provided on the surface of the separation membrane case 240 to allow the water to flow to the separation membrane module 210 .

When the effluent of the upflow anaerobic reaction tank 10 is supplied to the MBR tank 20, the MBR tank 20 in the aerobic condition induces nitrification reaction, and at the same time, The solids are removed, and the phosphorus in the effluent is removed by microorganisms. Also, a part of the effluent in the MBR tank 20 is returned to the upflow anaerobic reaction tank 10.

Next, the sterilization-adsorption tank 30 is the MBR primary organic impurities in the treated with also adsorb a target for treatment of the chamber 20 hypochlorite (OCl - -), or hypophosphorous acid (HOCl) It is used to disinfect. A phosphorus adsorption filter medium 310 for adsorbing dissolved phosphorus is filled in the disinfection-adsorption tank 30, and a cathode and an anode electrode 320 for electrolysis are disposed at one side of the disinfection- Respectively. The sodium chloride supply unit 330 may be further provided at one side of the disinfection-absorbing bath 30 to supply sodium chloride (NaCl) to the disinfection-absorbing bath 30.

When the treated water in the MBR tank 20 is supplied to the disinfection-adsorbing tank 30, the dissolved phosphorus in the treated water is adsorbed and removed on the phosphorus adsorption filter medium 310. When water is supplied to the disinfection-absorbing bath 30 and sodium chloride is supplied to the disinfection-absorbing bath 30, water and sodium chloride are electrolyzed to form chloric acid (OCl - ) and hypochlorous acid (HOCl - And organic impurities such as Escherichia coli in the treated water are sterilized and disinfected by the produced hypochlorous acid (OCl - ) and hypochlorous acid (HOCl - ). At this time, sodium chloride may be supplied to the treated water of the MBR tank 20 in advance. The heavy water treatment process of the present invention is completed by the operation of the disinfection-adsorption tank 30.

10: Upflow type anaerobic tank 20: MBR tank
30: Disinfection-adsorption tank 110: Dispersing plate
120: Three-phase separation membrane 121: Separation member
122: Outflow opening 210: Membrane module
220: Acid engine 230: Fluid carrier
240: Membrane case 241: Effluent supply hole
310: phosphorus adsorbing material 320: cathode and anode electrode rod
330: sodium chloride supply

Claims (8)

An upflow anaerobic tank for anaerobic treatment of domestic wastewater and separating domestic wastewater into effluent, organic matter and microorganisms;
An MBR tank for removing effluent from the upflow anaerobic tank and removing total solids using a membrane module to induce a nitrification reaction; And
And a sterilizing-adsorbing tank for adsorbing phosphorus contained in the treated water of the MBR tank and disinfecting the organic impurities in the treated water,
Wherein the upflow anaerobic reaction tank comprises a dispersion plate and a plurality of three-phase separation membranes,
The dispersing plate is provided in the lower part of the upflow anaerobic reaction tank to uniformly disperse the fresh wastewater flowing into the upward flow and induce vortex formation to uniformly anaerobically treat the whole domestic wastewater in the anaerobic reaction tank,
Wherein the plurality of three-phase separation membranes are vertically spaced apart from each other in the upflow anaerobic reactor to separate the domestic sewage in the anaerobic reactor into effluent, organic matter and microorganisms.
The apparatus of claim 1, wherein the three-phase separation membrane comprises a plurality of separation members spaced apart in a horizontal direction,
Wherein the separating member has a triangular prism shape having an open bottom, an opening portion of the separating member facing downward,
Wherein the organic matter and microorganisms contained in the domestic wastewater are filtered by the separation member and the domestic wastewater filtered by the organic matter and the microorganisms is moved upward through the outflow opening between the separation member and the separation member.
3. The heavy water treatment system according to claim 2, wherein the plurality of three-phase separation membranes are spaced apart from each other in the upflow anaerobic reaction tank, and the separation members of the neighboring three-phase separation membranes are arranged orthogonally to each other.
The heavy water treatment device according to claim 1, wherein the MBR bath further comprises a fluid carrier.
[2] The apparatus of claim 1, further comprising a separation membrane case,
Wherein the separation membrane case provides a mounting space for the separation membrane module and the surface of the separation membrane case is provided with an effluent supply hole for allowing the transfer of the effluent to the separation membrane module.
The disinfection and adsorption apparatus according to claim 1, wherein the disinfection-adsorptive tank is filled with a phosphorus adsorption filter material for adsorbing dissolved phosphorus, a cathode and an anode electrode for electrolysis are provided on one side of the disinfection-
When water is supplied to the electrode and sodium chloride is supplied to the disinfection-adsorbing tank, sodium chloride (OCl - ) and hypochlorous acid (HOCl - ) are produced. Characterized in that the organic impurities in the treated water are sterilized by (OCl - ) and hypochlorous acid (HOCl - ).
The heavy water treatment apparatus according to claim 1, further comprising a sodium chloride supply unit for supplying sodium chloride (NaCl) to the disinfection-adsorption tank at one side of the disinfection-adsorption tank.
1. An apparatus for treating heavy water using a heavy water treatment apparatus comprising an upflow anaerobic tank operated in an anaerobic tank, an MBR tank operated in an aerobic condition, and a disinfection tank,
Supplying the sewage in the upflow anaerobic tank to the upflow anaerobic tank;
Separating effluent, organic matter and microorganisms by the three-phase separation membrane in the upflow anaerobic reaction tank;
An effluent of the upflow anaerobic reactor is supplied to the MBR tank, and the total solid matter in the effluent is removed by the membrane module of the MBR tank and the nitrification reaction proceeds; And
The treated water of the MBR tank is supplied to the disinfection-adsorbing tank, adsorbed to the phosphorus adsorbing material contained in the dissolved disinfection-adsorbing tank contained in the treatment water of the MBR tank, and the dechlorinated acid (OCl <" And disinfecting the organic impurities in the treated water of the MBR tank by hypochlorous acid (HOCl < - >).
KR1020140144506A 2014-10-23 2014-10-23 Apparatus and method for treating graywater KR20160047934A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106186575A (en) * 2016-08-31 2016-12-07 柳州市润广科技有限公司 One utilizes MBR membrane process to process sewage
CN106219891A (en) * 2016-08-31 2016-12-14 柳州市润广科技有限公司 A kind of sewage automatic control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106186575A (en) * 2016-08-31 2016-12-07 柳州市润广科技有限公司 One utilizes MBR membrane process to process sewage
CN106219891A (en) * 2016-08-31 2016-12-14 柳州市润广科技有限公司 A kind of sewage automatic control system

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