Classifications

• • 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
  • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
• • 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
  • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
  • C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/38—Removing components of undefined structure
  • B01D53/44—Organic components
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
  • B01D53/77—Liquid phase processes
  • B01D53/78—Liquid phase processes with gas-liquid contact
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
  • B01D53/84—Biological processes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B82—NANOTECHNOLOGY
  • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
  • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
• • 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
  • C02F3/02—Aerobic processes
  • C02F3/10—Packings; Fillings; Grids
• • 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
  • C02F3/02—Aerobic processes
  • C02F3/10—Packings; Fillings; Grids
  • C02F3/105—Characterized by the chemical composition
  • C02F3/106—Carbonaceous materials
• • 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
  • C02F3/02—Aerobic processes
  • C02F3/12—Activated sludge processes
  • C02F3/20—Activated sludge processes using diffusers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2257/00—Components to be removed
  • B01D2257/20—Halogens or halogen compounds
  • B01D2257/206—Organic halogen compounds
  • B01D2257/2066—Fluorine
• • 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
  • C02F1/28—Treatment of water, waste water, or sewage by sorption
  • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
• • 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
  • C02F2101/30—Organic compounds
  • C02F2101/36—Organic compounds containing halogen
• • 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
  • C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
• • 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
  • C02F2209/42—Liquid level
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2303/00—Specific treatment goals
  • C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2305/00—Use of specific compounds during water treatment
  • C02F2305/06—Nutrients for stimulating the growth of microorganisms
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2305/00—Use of specific compounds during water treatment
  • C02F2305/08—Nanoparticles or nanotubes
• • 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
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
  • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• • 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
  • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

• the present invention relates to a wastewater treatment method and a wastewater treatment apparatus not only in a semiconductor factory and a liquid crystal factory but also in a factory that manufactures or uses an organic fluorine compound.
• Organofluorine compounds are chemically stable substances.
• the organic fluorine compounds have excellent properties from the viewpoints of heat resistance and chemical resistance, and are therefore used for applications such as surfactants.
• the organic fluorine compound is a chemically stable substance, it is difficult to be decomposed by microorganisms.
• PFOS perfluorootatasulfonic acid
• PFOA perfluorooctanoic acid
• the perfluorooctasulfonic acid (PFOS) and the perfluorooctanoic acid (PFOA) are chemically stable, and therefore require a high temperature of about 1000 ° C. or higher to be thermally decomposed (Japanese Patent Laid-Open No. 2005-260688). (See 2001 302551).
• an object of the present invention is to provide a wastewater treatment method and a wastewater treatment apparatus capable of effectively decomposing a hardly decomposable organic fluorine compound by a microorganism. Means for solving the problem
• the wastewater treatment method of the present invention comprises:
• microorganisms, micro / nano bubble generation aids and nutrients are added to the waste water containing the organic fluorine compound, and micro nano bubbles are added to prepare water to be treated.
• the treated water is supplied to an activated carbon tower filled with activated carbon, and the organic fluorine compound in the treated water is decomposed by the microorganism.
• the micro-nano bubble refers to a bubble having a diameter of about 10 ⁇ m force and several hundred nm.
• the above-mentioned micro / nano bubble generation aid means one that can stably maintain the generation state of micro / nano bubbles.
• the nutrient is a nutrient necessary for microorganisms to become active.
• the organic fluorine compound include perfluorooctasulfonic acid (PFOS) and perfluorooctanoic acid (PFOA).
• microorganisms, micro / nano bubble generation aids and nutrients are added to the waste water containing the organic fluorine compound and the micro / nano bubbles are contained.
• the treated water is prepared, the treated water is supplied to an activated carbon tower filled with activated charcoal, and the organofluorine compound in the treated water is decomposed by the microorganisms. It can be propagated on the activated carbon of the activated carbon tower, which is an immobilizing carrier for the microorganisms, and further activated by the micro-nano bubbles and the nutrient, so that the organic fluorine compound can be rationally decomposed.
• an optimal amount of the micro / nano bubbles that activate the microorganism can be generated.
• a hardly decomposable organic fluorine compound for example, perfluorooctasulfonic acid
• PFOS perfluorooctanoic acid
• PFOA perfluorooctanoic acid
• a micro-nano bubble generation tank that houses a micro-nano bubble generator
• An auxiliary agent tank containing an auxiliary agent for generating micro / nano bubbles and connected to the micro / nano bubble generating tank;
• a nutrient tank containing the nutrient and connected to the micro / nano bubble generation tank;
• Wastewater containing organic fluorine compounds is introduced into the micro / nano bubble generation tank.
• the micro-nano bubble generation assistant is added from the assistant tank, and the nutrient is added from the nutrient tank, the micro-nano bubbles are generated by the micro-nano bubble generator. Contained, treated water is created,
• the treated water is supplied to the activated carbon tower, and the organic fluorine compound in the treated water is decomposed by the microorganism.
• the micro-nano bubble refers to a bubble having a diameter of about several hundred nm even with a 10 ⁇ m force.
• the above-mentioned micro / nano bubble generation aid means one that can stably maintain the generation state of micro / nano bubbles.
• the nutrient is a nutrient necessary for microorganisms to become active.
• Examples of the organic fluorine compound include perfluorooctasulfonic acid (PFOS) and perfluorooctanoic acid (PFOA).
• the wastewater containing a micro-nano bubble generation tank, a microorganism tank, an auxiliary agent tank, a nutrient tank, and an activated carbon tower and containing an organic fluorine compound is Introduced into the nanobubble generation tank, the microbe, the micronanobubble generation aid and the nutrient are added, and the micronanobubbles are contained to prepare the water to be treated.
• the microorganism Since the organofluorine compound in the treated water supplied to the activated carbon tower is decomposed by the microorganism, the microorganism is propagated on the activated carbon of the activated carbon tower, which is an immobilization carrier for the microorganism, and It can be further activated by micro-nano bubbles and the above nutrients, and the organic fluorine compounds can be reasonably decomposed.
• the micro-nano bubble generation aid an optimal amount of the micro-nano bubbles that activate the microorganisms can be generated.
• PFOS perfluorooctanoic acid
• PFOA perfluorooctanoic acid
• An exhaust gas treatment tank containing a micro / nano bubble generator and connected to the micro / nano bubble generation tank;
• a microorganism tank that contains microorganisms and is connected to the exhaust gas treatment tank;
• an auxiliary tank that contains the micro-nano bubble generating aid and is connected to the exhaust gas treatment tank;
• the water introduced into the exhaust gas treatment tank is added with the microorganisms from the microorganism tank, the auxiliary tank power is also added with the micro / nano bubble generation aid, and the nutrient agent is added to the nutrient tanker.
• the micro / nano bubble generator contains micro / nano bubbles to create washing water
• the exhaust gas generated by decomposing the organofluorine compound in the water to be treated by the microorganisms in the activated carbon tower is introduced into the exhaust gas treatment tank and treated with the washing water.
• the exhaust gas treatment tank, the microorganism tank, the auxiliary agent tank, and the nutrient tank the water introduced into the exhaust gas treatment tank, Since the microorganism, the micro-nano bubble generation aid and the nutrient are added and the micro-nano bubble is contained, the washing water is prepared, and the exhaust gas is treated with the washing water. Fluorine can be reasonably treated by the activated microorganisms in the wash water.
• the wastewater treatment apparatus of one embodiment includes an aeration unit and a relay tank connected to the activated carbon tower and the exhaust gas treatment tank, and the treated water that has passed through the activated carbon tower and the above-mentioned
• the exhaust gas is introduced into the relay tank and separated into the water to be treated and the exhaust gas, and the exhaust gas is introduced into the exhaust gas treatment tank.
• the treated water and the exhaust gas that have passed through the activated carbon tower are introduced into the relay tank having the aeration unit, and the treated water, the exhaust gas, Therefore, the water to be treated and the exhaust gas can be reliably treated separately.
• the exhaust gas treatment tank is A lower water storage part that is disposed in the lower part and houses the micro / nano bubble generator and stores the washing water;
• An upper watering part that is disposed at the upper part and sprays the washing water pumped from the lower water storage part;
• the washing water sprayed from the upper watering part cleans the exhaust gas, is stored in the lower water storage part, and is pumped up again to the upper watering part.
• the cleaning water sprayed from the upper watering part is washed with the exhaust gas, stored in the lower water storage part, and pumped up again to the upper watering part. Therefore, the washing water can be circulated between the upper watering part and the lower water storage part.
• a filler is accommodated in the micro / nano bubble generation tank.
• the microorganisms activated by the micro / nano bubbles are propagated while being fixed to the filler. Can be made.
• a micro / nano bubble generator is accommodated in the relay tank.
• the micro / nano bubble generator is accommodated in the relay tank, the microorganisms in the water to be treated are activated in the relay tank, and the activity is increased.
• the organofluorine compound remaining in the water to be treated can be further decomposed by the microorganism that has been contaminated.
• the relay tank contains a filler.
• the microorganisms activated by the micro-nano bubbles are used for the filler as the fixed carrier.
• the culture can be performed at a high concentration, and the treatment efficiency of the treated water can be increased.
• the filler is filled with polyvinylidene vinylidene. It is a material.
• the shape of the polyvinyl chloride polyvinylidene filler is, for example, a string shape or a ring shape.
• the filler is a polyvinylidene chloride filler
• microorganisms activated in the polysalt vinylidene filler can be cultured at a high concentration
• the organic fluorine compound can be subjected to primary treatment.
• the polysalt vinylidene filler has a string shape.
• the polyvinyl chloride polyvinylidene filler since the polyvinyl chloride polyvinylidene filler has a string shape, many of the polyvinyl chloride polyvinylidene fillers are transferred to the micro-nano bubble generation tank and the relay. It can be accommodated in a tank.
• the water to be treated separated in the relay tank is treated with chelate resin.
• the water to be treated separated in the relay tank is treated with chelate resin, so that low concentration fluorine in the water to be treated in the relay tank is used.
• the filler is activated carbon.
• the activated carbon is accommodated in, for example, a mesh bag, and a mesh tube is installed between the adjacent mesh bags.
• the filler is activated carbon
• the organic fluorine compound adsorbed on the activated carbon can be decomposed with activated microorganisms.
• the activated carbon can be regenerated by the activated microorganism.
• the activated carbon is housed in a net bag.
• the activated carbon is accommodated in the mesh bag, the activated carbon is simply put into the micro-nano bubble generation tank and the relay tank together with the mesh bag. Can be accommodated.
• the wastewater treatment apparatus of one embodiment there are a plurality of mesh bags, and a mesh tube is provided between at least one set of adjacent mesh bags. [0038] According to the waste water treatment apparatus of this embodiment, since the mesh tube is provided between the at least one set of adjacent mesh bags, the flow of water to all the activated carbons is improved. It is possible to prevent the closure phenomenon from occurring.
• the water to be treated separated in the relay tank is subjected to a precipitation treatment with a calcium agent.
• the water to be treated separated in the relay tank is subjected to precipitation treatment with a calcium agent, so that high concentration fluorine in the water to be treated in the relay tank is removed.
• a calcium agent By adding the above calcium agent, it can be precipitated as harmless calcium fluoride.
• a filler is accommodated in the lower water storage section of the exhaust gas treatment tank.
• the wastewater treatment apparatus of this embodiment since the filler is accommodated in the lower water storage section of the exhaust gas treatment tank, the microorganisms propagate in the filler, and the organic matter in the exhaust gas.
• the washing water that has absorbed water can be treated in the lower water reservoir. That is, the organic fluorine compound in the washing water can be decomposed by microorganisms that have propagated and become active on the filler.
• the filler is a polyvinyl chloride vinylidene filler.
• the shape of the polyvinyl chloride vinylidene filler is, for example, a string shape or a ring shape
• the filler is a polyvinylidene chloride filler
• microorganisms activated in the polysalt vinylidene filler can be cultured at a high concentration, The organofluorine compound can be treated.
• the polysalt vinylidene filler is in a string shape.
• the polyvinyl chloride vinylidene filler since the polyvinyl chloride vinylidene filler has a string shape, a large amount of the polyvinyl chloride vinylidene filler is used in the exhaust gas treatment tank. Can be accommodated in the lower reservoir. [0048] In the wastewater treatment apparatus of one embodiment, the polysalt vinylidene filler is in a ring shape.
• the polyvinyl chloride filler is in a ring shape, the polyvinyl chloride filler is used for the lower storage of the exhaust gas treatment tank. It can be easily accommodated in the water section.
• the filler is activated carbon.
• the activated carbon is accommodated in, for example, a mesh bag, and a mesh tube is installed between the adjacent mesh bags.
• the filler is activated carbon
• the organofluorine compound adsorbed on the activated carbon can be decomposed with active microorganisms.
• the activated carbon can be regenerated by the activated microorganism.
• the activated carbon is housed in a net bag.
• the activated carbon is housed in the mesh bag, the activated carbon is easily put into the lower water storage part of the exhaust gas treatment tank together with the mesh bag. Can be accommodated.
• a mesh tube is provided between at least one pair of adjacent mesh bags.
• the mesh tube is provided between the at least one pair of adjacent mesh bags, the flow of water to all the activated carbons is improved. It is possible to prevent the closure phenomenon from occurring.
• microorganisms, micro / nano bubble generation aids and nutrients are added to the waste water containing the organic fluorine compound, and the micro / nano bubbles are contained.
• the water to be treated is prepared, and the water to be treated is supplied to an activated carbon tower filled with activated charcoal, and the organic fluorine compound in the water to be treated is decomposed by the microorganisms.
• Organofluorine compounds can be effectively decomposed by microorganisms.
• a micro-nano bubble generation tank A wastewater containing an organic fluorine compound is introduced into the micro / nano bubble generating tank, and the microorganisms, the micro / nano bubble generating aid and the above A nutrient solution is added and the micro-nano bubbles are contained to prepare treated water.
• the treated water is supplied to the activated carbon tower, and the organofluorine compound in the treated water is converted by the microorganism. Since it is decomposed, the hardly decomposable organic fluorine compound can be effectively decomposed by microorganisms.
• FIG. 1 is a schematic view showing a first embodiment of a waste water treatment apparatus of the present invention.
• FIG. 2 is a schematic view showing a second embodiment of the waste water treatment apparatus of the present invention.
• FIG. 3 is a schematic view showing a third embodiment of the waste water treatment apparatus of the present invention.
• FIG. 4 is a schematic view showing a fourth embodiment of the waste water treatment apparatus of the present invention.
• FIG. 5 is a schematic view showing a fifth embodiment of the waste water treatment apparatus of the present invention.
• FIG. 6 is a schematic view showing a sixth embodiment of the waste water treatment apparatus of the present invention.
• FIG. 7 is a schematic view showing a seventh embodiment of the waste water treatment apparatus of the present invention.
• FIG. 1 shows a schematic view of a first embodiment of the waste water treatment apparatus of the present invention.
• This wastewater treatment device contains a micro / nano bubble generation tank 1 that contains a micro / nano bubble generator 23, a microorganism tank 61 that contains microorganisms, an auxiliary tank 50 that contains micro / nano bubble generation aids, and a nutrient. And an activated charcoal tower 4 filled with activated carbon.
• the microorganism tank 61, the auxiliary agent tank 50, the nutrient tank 52, and the activated carbon tower 4 are connected to the micro / nano bubble generating tank 1, respectively.
• the wastewater containing the organic fluorine compound is introduced into the micro-nano bubble generation tank 1, the microorganism is added from the microorganism tank 61, and the micro-nano bubble generation auxiliary agent is added from the auxiliary tank 50. Added, the nutrient is added from the nutrient tank 52, and the micro / nano bubble is generated by the micro / nano bubble generator 23. The water to be treated is created.
• the treated water is supplied from the micro / nano bubble generating tank 1 to the activated carbon tower 4, and the organic fluorine compound in the treated water is decomposed by the microorganism.
• the microorganism tank 61 is connected to a microorganism tank pump 62 for sending the microorganisms to the micro / nano bubble generating tank 1.
• the auxiliary tank 50 is connected to an auxiliary tank pump 51 for sending the micro / nano bubble generating auxiliary agent to the micro / nano bubble generating tank 1.
• the nutrient tank 52 is connected to a nutrient tank pump 53 that delivers the nutrient to the micro-nano bubble generation tank.
• the micro / nano bubble generation tank 1 is connected to a micro / nano bubble generation tank pump 2 for sending the water to be treated to the activated carbon tower 4.
• the microorganism may be a microorganism contained in general biologically treated water, or may be a microorganism that is particularly excellent in decomposing organic fluorine compounds. Any type is acceptable.
• the microorganism added from the microorganism tank 61 may be determined as a target microorganism that may be the microorganism itself or may exist in the liquid.
• the micro / nano bubble generation aid refers to one that can stably maintain the generation state of micro / nano bubbles. That is, the above-mentioned micro / nano bubble generation aid generates optimal micro / nano bubbles and activates all the microorganisms that exist!
• the nutrient is, for example, a nutrient that contains nitrogen or phosphorus as a main component and contains a small amount of potassium, magnesium, or calcium, and is necessary when microorganisms are activated.
• An air suction pipe 25 is connected to the micro-nano bubble generator 23, and a valve 24 for adjusting the amount of air suction is connected to the air suction pipe 25.
• the micro / nano bubble generator 23 is connected to a circulation pump 26 for supplying water in the micro / nano bubble generator 1 to the micro / nano bubble generator 23.
• micro / nano bubble generator 23 is supplied with water from the circulation pump 26.
• the circulation pump 26 supplies water to the micro / nano bubble generator 23 in a necessary pressure state. ing. When supplied at the required pressure, micro-nano bubbles are generated efficiently. Necessary pressure means 1.5kg / cm 2 or more.
• micro / nano bubble generator 23 is not limited to the manufacturer as long as it is commercially available. Specifically, Nano-Branet Laboratories Co., Ltd., Oratech Co., Ltd. and Nomura Electronics Co., Ltd. There are products. Other products include, for example, Nishika Sangyo Co., Ltd. micro bubble water production equipment and Resource Development Co., Ltd. micro bubble water production equipment, but they may be selected according to the purpose.
• the micro-nano bubble refers to a bubble having a diameter of about 10 ⁇ m force and several hundred nm.
• normal bubbles bubbles
• microbubbles are bubbles having a bubble diameter of 10 m to several tens / z m, shrink in water, and eventually disappear (completely dissolve).
• a nano bubble is a bubble having a diameter of several hundred nm or less and can exist in water forever. And it can be said that the micro-nano bubble is a bubble in which micro-bubbles and nano-bubbles are mixed.
• micro-nano bubble generation tank 1 optimum micro-nano bubbles are generated from the micro-nano bubble generator 23 by the addition of the micro-nano bubble generation aid.
• a water stream 27 is generated by the fine bubbles discharged from the micro-nano bubble generator 23, and this water stream 27 becomes a circulating water stream of the micro-nano bubble generation tank 1, and the micro-nano bubble generation tank 1 The inside is agitated. That is, the water stream 27 mixes the organic fluorine compound-containing waste water, the micro / nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.
• the water to be treated in the micro / nano bubble generation tank 1 is introduced into the upper part of the activated carbon tower 4 by the micro / nano bubble generation tank pump 2 with the flow rate adjusted by a valve 49.
• the activated carbon packed in the activated carbon tower 4 is, for example, coconut shell activated carbon or coal-based activated carbon. Whether to select coconut husk activated carbon or coal-based activated carbon. A physical experiment may be performed to determine the type and shape of the activated carbon or the amount of treated water introduced.
• An exhaust gas treatment tank 9 is connected to the micro / nano bubble generation tank 1 via a duct 7.
• a relay tank 5 is connected to the activated carbon tower 4 and the exhaust gas treatment tank 9. That is, the relay tank 5 is connected to the activated carbon tower 4 via a pipe, and is connected to the exhaust gas treatment tank 9 via a duct 7.
• the activated carbon tower 4 has a branch pipe on the downstream side, and one side of the branch pipe is connected to the relay tank 5 via the relay tank automatic valve 3a, and the other side of the branch pipe is connected.
• the side is connected to the micro / nano bubble generation tank 1 through the automatic valve 3b for the micro / nano bubble generation tank.
• the treated water discharged from the activated carbon tower 4 and the exhaust gas containing fluorine are high if the quality of the treated water is good and the organic fluorine compound is decomposed.
• the automatic valve 3a for the relay tank is opened and the valve 3b for the micro / nano bubble generating tank is closed and introduced into the relay tank 5.
• the middle tank I the middle tank
• the relay tank 5 automatic valve 3a is opened without causing the inside of the relay tank 5 to foam, and the micro The nanobubble generation tank-bound valve 3b is closed, and the water to be treated and the exhaust gas are sequentially introduced into the relay tank 5.
• the relay tank 5 has an aeration unit 65.
• the aeration unit 65 includes an air diffuser 58 in the relay tank 5 and a blower 59 that sends air to the air diffuser 58.
• the aeration unit 65 By the aeration unit 65, the water to be treated is bubbled.
• the treated water exiting the relay tank 5 is treated in the next-stage wastewater treatment facility according to the content of the treated water (that is, water quality).
• This wastewater treatment facility in the next process is often treated with fluorine-containing wastewater.
• the exhaust gas 6 containing fluorine in the micro / nano bubble generation tank 1 and the relay tank 5 (indicated by an arrow) is introduced into the exhaust gas treatment tank 9 by the fan 8 via the duct 7.
• the water to be treated and the exhaust gas that have passed through the activated carbon tower 4 are introduced into the relay tank 5 and separated into the water to be treated and the exhaust gas. It is introduced into the exhaust gas treatment tank 9.
• the exhaust gas treatment tank 9 houses a micro / nano bubble generator 12.
• a microorganism tank 63 for storing microorganisms
• an auxiliary tank 54 for storing micro-nano bubble generation auxiliary agents
• a nutrient tank 56 for storing nutrients.
• the microorganism tank 63, the auxiliary agent tank 54, and the nutrient tank 56 are the same as the microorganism tank 61, the auxiliary tank 50, and the nutrient tank 52. I will omit the description.
• the microorganism tank 63 is connected to a microorganism tank pump 64 for sending the microorganisms to the exhaust gas treatment tank 9.
• the auxiliary tank 54 is connected to an auxiliary tank pump 55 for sending the micro / nano bubble generating auxiliary agent to the exhaust gas treatment tank 9.
• the nutrient tank 56 is connected to a nutrient tank pump 57 that delivers the nutrient to the exhaust gas treatment tank 9.
• the water introduced into the exhaust gas treatment tank 9 is added with the microorganism from the microorganism tank 63, added with the micro-nano bubble generating assistant from the assistant tank 54, and the nutrient tank.
• the nutrient solution is added from 56 and the micro-nano bubbles are contained by the micro-nano bubble generator 12 to create washing water.
• the exhaust gas generated by decomposing the organic fluorine compound in the water to be treated by the microorganisms in the activated carbon tower 4 is introduced into the exhaust gas treatment tank 9 and treated with the washing water. .
• the exhaust gas treatment tank 9 includes a lower water storage part 11 disposed in the lower part and an upper watering part 10 disposed in the upper part.
• the lower water storage unit 11 houses the micro / nano bubble generator 12 and stores the washing water.
• the upper water sprinkling unit 10 sprinkles the washing water pumped up from the lower water storage unit 11.
• the wash water sprayed from the upper water sprinkling unit 10 cleans the exhaust gas, is stored in the lower water storage unit 11, and is pumped again to the upper water sprinkling unit 10 via the water spray pump 17. Raised.
• the upper water sprinkling unit 10 includes a porous plate 18, a plastic filler 19 (for example, trade name Teralet) and a watering nozzle 20 in order from the bottom to the top.
• the upper watering part 10 is provided with an exhaust outlet 22 at the upper part of the watering nozzle 20.
• the exhaust gas containing fluorine flows into the exhaust gas treatment tank 9 from the duct 7 provided between the upper watering part 10 and the lower water storage part 11, and the watering nozzle 20 Then, the water is washed with the washing water sprayed and discharged from the exhaust outlet 22.
• the micro-nano bubble generator 12 is accommodated. Up Since the micro / nano bubble generator 12 has the same configuration as the micro / nano bubble generator 23, the description thereof is omitted.
• An air suction pipe 14 is connected to the micro-nano bubble generator 12, and a valve 13 for adjusting the amount of air suction is connected to the air suction pipe 14.
• the micro / nano bubble generator 12 is connected to a circulation pump 15 that supplies water in the exhaust gas treatment tank 9 to the micro / nano bubble generator 12.
• the micro-nano bubble generator 12 is supplied with water from the circulation pump 15.
• a water stream 16 is generated by the fine bubbles discharged from the micro / nano bubble generator 12, and this water stream 16 becomes a circulating water stream of the exhaust gas treatment tank 9, and the inside of the exhaust gas treatment tank 9 is agitated. is doing. That is, the water stream 16 mixes the organic fluorine compound-containing waste water, the micro / nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.
• Water is sprayed from the watering nozzle 20 of the upper watering part 10 via 21.
• to-be-treated water is prepared by adding microorganisms, micro / nano bubble generation aids and nutrients to the waste water containing the organic fluorine compound and containing micro / nano bubbles.
• the water to be treated is supplied from the micro / nano bubble generating tank 1 to the activated carbon tower 4 filled with activated carbon, and the organic fluorine compound in the water to be treated is decomposed by the microorganisms.
• the micro-nano bubble generation tank 1, the microorganism tank 61, the auxiliary agent tank 50, the nutrient tank 52, and the activated carbon tower 4 are provided. Then, the wastewater containing the organic fluorine compound is introduced into the micro / nano bubble generation tank 1 to which the microorganism, the micro / nano bubble generation aid and the nutrient are added, and the micro / nano bubble is contained and covered. Treated water is prepared, and the treated water is supplied from the micro / nano bubble generation tank 1 to the activated carbon tower 4 and the organic fluorine compound in the treated water is decomposed by the microorganisms.
• the activated carbon of the activated carbon tower 4 which is an immobilization carrier for the microorganisms, and is further activated by the micro-nano bubbles and the nutrient,
• the machine fluorine compound can reasonably be decomposed.
• an optimal amount of the micro / nano bubbles that activate the microorganism can be generated.
• PFOS perfluorooctanoic acid
• PFOA perfluorooctanoic acid
• the exhaust gas treatment tank 9 the microorganism tank 63, the auxiliary agent tank 54, and the honor
• the water introduced into the exhaust gas treatment tank 9 is added with the microorganism, the micro-nano bubble generation aid and the nutrient, and contains the micro-nano bubble, and the washing water Since the exhaust gas is treated with the washing water, the fluorine in the exhaust gas can be rationally treated with the activated microorganisms in the washing water.
• washing water sprayed from the upper watering part 10 is washed with the exhaust gas, stored in the lower water storage part 11, and pumped up again into the upper watering part 10. Can be circulated between the upper watering part 10 and the lower water storage part 11 for use.
• FIG. 2 shows a second embodiment of the waste water treatment apparatus of the present invention. The difference from the first embodiment shown in FIG. 1 will be described.
• a micro / nano bubble generator 28 is accommodated in the relay tank 5.
• the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
• the micro / nano bubble generator 28 has the same configuration as the micro / nano bubble generator 23 of the first embodiment shown in FIG.
• An air suction pipe 30 is connected to the micro / nano bubble generator 28, and a valve 29 for adjusting the amount of air suction is connected to the air suction pipe 30.
• the micro / nano bubble generator 28 is connected to a circulation pump 31 for supplying water in the relay tank 5 to the micro / nano bubble generator 28.
• the micro / nano bubble generator 28 is supplied with water from the circulation pump 31 and sucks air from the air suction pipe 30, so that water and air cause a swirling flow at an ultra-high speed, resulting in a result.
• micro-nano bubbles are generated after a certain time.
• a water flow 32 is generated, and this water flow 32 becomes a circulating water flow of the relay tank 5 and stirs in the relay tank 5. Yes. That is, the water stream 32 mixes the organic fluorine compound-containing waste water, the micro-nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.
• the treated water containing the micro-nano bubbles does not contain the treated water, which has a better removal rate of the organic fluorine compound than the treated water. It was confirmed more.
• micro / nano bubble generator 28 secures the necessary amount of air from the nozzle 29 and the air suction pipe 30 in order to generate micro / nano bubbles.
• the treated water from the relay tank 5 is treated in the next process treatment facility depending on the water quality.
• FIG. 3 shows a third embodiment of the waste water treatment apparatus of the present invention.
• the micro-nano bubble generating tank 1 contains a string-like polysalt / vinylidene filler 33 as a filler. It has been. Further, the water to be treated separated in the relay tank 5 is treated with the chelate resin of the chelate resin tower.
• the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
• the micro-nano bubble generation tank 1 contains the string-like polysalt / biurydene filler 33, so that the microorganisms activated by the micro-nano bubbles are not contained.
• the cord-like polysalt-vinylidene filler 33 can be propagated while being fixed.
• the microorganisms activated in the cord-like polysalt / bilidene filler 33 can be cultured at a high concentration, and the organic fluorine compound can be primarily treated.
• many of the string-like polyvinylidene chloride fillers 33 can be accommodated in the micro / nano bubble generating tank 1.
• FIG. 4 shows a fourth embodiment of the waste water treatment apparatus of the present invention.
• activated carbon 35 as a filler is accommodated in the micro / nano bubble generating tank 1.
• the water to be treated separated in the relay tank 5 is subjected to a precipitation treatment with a calcium agent in a calcium agent-added coagulating sedimentation facility.
• the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
• the activated carbon 35 is accommodated in a mesh bag 34, and there are a plurality of mesh bags 34, and a mesh tube 36 is provided between at least one pair of the adjacent mesh bags 34, 34. .
• the mesh bag 34 and the mesh tube 36 are accommodated in a perforated plate 37 installed in the micro / nano bubble generating tank 1.
• the organic fluorine compound adsorbed on the activated carbon 35 can be decomposed with activated microorganisms. That is, the activated carbon 35 can be regenerated by the activated microorganisms. Further, since the activated carbon 35 is accommodated in the mesh bag 34, the activated carbon 35 can be easily accommodated in the micro / nano bubble generating tank 1 together with the mesh bag 34. In addition, since the mesh tube 36 is provided between the at least one pair of the adjacent mesh bags 34, 34, the flow of water to all the activated carbons 35 is improved, and the occurrence of a clogging phenomenon is prevented. Can be prevented.
• FIG. 5 shows a fifth embodiment of the waste water treatment apparatus of the present invention.
• a micro / nano bubble generator 28 is accommodated in the relay tank 5.
• the relay tank 5 accommodates a string-like polyvinylidene filler 33 as a filler.
• the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
• the micro / nano bubble generator 28 has the same configuration as the micro / nano bubble generator 23 of the first embodiment shown in FIG.
• An air suction pipe 30 is connected to the micro / nano bubble generator 28, and a valve 29 for adjusting the air suction amount is connected to the air suction pipe 30.
• the micro / nano bubble generator 28 is connected to a circulation pump 31 for supplying water in the relay tank 5 to the micro / nano bubble generator 28.
• the micro / nano bubble generator 28 is supplied with water from the circulation pump 31 and sucks air from the air suction pipe 30, so that water and air cause a swirling flow at an ultra-high speed, resulting in a result. Micro-nano bubbles are generated.
• a water stream 32 is generated, and this water stream 32 becomes a circulating water stream of the relay tank 5, and the inside of the relay tank 5 is stirred. Yes. That is, the water stream 32 mixes the organic fluorine compound-containing waste water, the micro-nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.
• the treated water containing michro nano bubbles does not contain, but compared to the treated water, the treated water contained in the treated water had a better removal rate of the organic fluorine compound. It was confirmed more.
• micro-nano bubble generator 28 secures the necessary amount of air from the nozzle 29 and the air suction pipe 30 in order to generate micro / nano bubbles.
• the treated water from the relay tank 5 is treated in the next process treatment facility depending on the water quality.
• the micro / nano bubble generator 28 is accommodated in the relay tank 5, the microorganisms in the water to be treated are activated in the relay tank 5, and the activated microorganisms The organic fluorine compound remaining in the water to be treated can be further decomposed.
• the string-like polysalt bililidene filler 33 is accommodated in the relay tank 5
• the microorganisms activated by the micro-nano bubbles are removed from the cord-like polysalt polysalt- Can be bred while being fixed to Reden Filler 33.
• microorganisms activated in the string-like polyvinylidene chloride filler 33 can be cultured at a high concentration, and the treatment efficiency of the treated water can be increased.
• many of the above-mentioned cord-like polysalt vinylidene fillers 33 can be accommodated in the relay tank 5.
• FIG. 6 shows a sixth embodiment of the waste water treatment apparatus of the present invention.
• a micro / nano bubble generator 28 is accommodated in the relay tank 5.
• the relay tank 5 contains activated carbon 35 as a filler. Note that, in the sixth embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
• the micro / nano bubble generator 28 has the same configuration as the micro / nano bubble generator 23 of the first embodiment shown in FIG.
• An air suction pipe 30 is connected to the micro / nano bubble generator 28, and a valve 29 for adjusting the air suction amount is connected to the air suction pipe 30.
• the micro / nano bubble generator 28 is connected to a circulation pump 31 for supplying water in the relay tank 5 to the micro / nano bubble generator 28.
• the micro-nano bubble generator 28 is supplied with water from the circulation pump 31 and sucks air from the air suction pipe 30, so that the water and air swirl at an ultra-high speed. As a result, micro-nano bubbles are generated after a certain time.
• the water flow 32 is generated by the fine bubbles discharged from the micro / nano bubble generator 28, and this water flow 32 becomes a circulating water flow of the relay tank 5 and stirs in the relay tank 5. Yes. That is, the water stream 32 mixes the organic fluorine compound-containing waste water, the micro-nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.
• micro / nano bubble generator 28 secures the necessary amount of air from the nozzle 29 and the air suction pipe 30 in order to generate micro / nano bubbles.
• the treated water from the relay tank 5 is treated in the next process treatment facility depending on the water quality.
• the micro-nano bubble generator 28 is accommodated in the relay tank 5, the microorganisms in the water to be treated are activated in the relay tank 5, and the activated microorganisms The organic fluorine compound remaining in the water to be treated can be further decomposed.
• the activated carbon 35 is accommodated in a mesh bag 34, and there are a plurality of mesh bags 34, and a mesh tube 36 is provided between at least one pair of the adjacent mesh bags 34, 34. Is provided.
• the mesh bag 34 and the mesh tube 36 are accommodated in a perforated plate 37 installed in the relay tank 5.
• the organic fluorine compound adsorbed on the activated carbon 35 can be decomposed with activated microorganisms. That is, the activated carbon 35 can be regenerated by the activated microorganisms. Further, since the activated carbon 35 is accommodated in the mesh bag 34, the activated carbon 35 can be easily accommodated in the relay tank 5 together with the mesh bag 34. In addition, since the mesh tube 36 is provided between the at least one pair of the adjacent mesh bags 34, 34, the flow of water to all the activated carbon 35 is improved to prevent the occurrence of a clogging phenomenon. it can.
• FIG. 7 shows a seventh embodiment of the waste water treatment apparatus of the present invention.
• the lower water reservoir 11 of the exhaust gas treatment tank 9 has a string-like polyvinyl chloride as a filler. Reden filler 33 is contained.
• the same portions as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
• the string-like polysalt / vinylidene filler 33 is accommodated in the exhaust gas treatment tank 9, the microorganisms activated by the micro / nano bubbles are treated with the string-like polysalt / salt. It can be propagated while being fixed to the biliden filler 33.
• the organic fluorine compound gasified in the process of decomposing the organic fluorine compound is absorbed by washing with the washing water, and microorganisms are produced by the active microorganisms propagated on the string-like polysalt / vinylidene filler 33. Decompose.
• cord-like polysalt vinylidene fillers 33 can be accommodated in the upper and lower water storage portions 11 of the exhaust gas treatment tank 9.
• an experimental device corresponding to the first embodiment of FIG. 1 was manufactured.
• the capacity of the micro-nano bubble generation tank 1 is about lm 3
• the capacity of the activated carbon tower 4 is 2 m 3
• the capacity of the relay tank 5 is lm 3
• the entire exhaust gas treatment tank 9 is used. as about 3m 3 capacity, 1 month, the micro-nano bubble generation tank 1, the activated carbon tower 4, Na' Oko commissioning by introducing an organic fluorine compound-containing waste water and biologically treated water in the relay tank 5 and the exhaust gas treatment tank 9 It was.
• PFOS perfluoro The concentration of octanesulfone powder
• concentration of PFOS at the outlet of the relay tank 5 were measured, and the removal rate of PFOS was measured and found to be 92%.
• persistent PFOS can be effectively decomposed by microorganisms.
• the ring-shaped polysalt vinylidene filler may be used in place of the string-like polysalt vinylidene filler 33.
• the polyvinylidene filler can be easily accommodated in the micro / nano bubble generation tank 1, the relay tank 5 and the exhaust gas treatment tank 9.
• the micro-nano bubble generating tank 1, the relay tank 5 and the exhaust gas treatment tank 9 are connected to the string-like polysalt vinyl-redenid filler 33 and Use activated carbon 35 above.

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• 2006
  • 2006-06-07 JP JP2006157954A patent/JP3974928B1/ja not_active Expired - Fee Related
• 2007
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