JP2000079384A - Chemical and biological treatment system for waste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce equipment and running costs by a method in which raw water and ozone gas are mixed, and after the mixed raw water is retained, the solid contents in the raw water is flocculated without injecting a flocculant, and solid-liquid separation is done. SOLUTION: Raw water is sent to a primary reaction tank 2 or an ozone gas phase reaction column 16. In the tank 2, high or low concentration ozone water mixed in a gas-liquid mixing unit is mixed with the raw water. In the reaction column 16, ozone gas is mixed with the raw water to be ozone-treated. In an ozone flocculation tank 4, the ozone-treated raw water is retained temporarily. As a result of the retention in the tank 4, the effect of flocculation is promoted. After the solid components of the raw water are flocculated, the raw water is sent from the tank 4 to a solid-liquid separator 6, the solid components in the raw water are separated from liquid components. The separated solid components are sent to a compost making apparatus or a high speed inorganic material-making apparatus 15. Besides, the separated liquid is sent to an ozone reaction tank 7, an aeration tank 10, a precipitation tank 11, a catalytic oxidation tank 12, and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the use of ozone for waste (inorganic and organic waste) discarded in, for example, a water purification plant, a food processing plant, a pig farm, a cattle farm, a poultry farm, a brewery, and the like. The present invention relates to a waste chemical biological treatment system for biologically treating an organic waste treated with ozone by using microorganisms.

[0002]

2. Description of the Related Art For example, distilled shochu lees during the production of shochu is a fermentation residue, and its components are hardly decomposed even by chemical and physical treatments, and it is difficult to dispose of calories. It has been. At present, it is treated by the following method, but due to the high equipment costs and running costs of the treatment facility, it is a factor that the user side will not be able to proceed with the introduction even from the viewpoint of profitability. Most of the fermentation residue treatment has to rely on ocean dumping.

[0003] Conventional methods for treating shochu distillation lees include an incineration type treatment method and a methane fermentation activated sludge treatment method. There are two main types of incineration treatment. (1) A method of centrifuging or dewatering shochu distillation lees, incinerating solids, concentrating and incinerating desorbed water, and separately treating condensed water with microorganisms and discharging. (2) A method in which shochu distillation lees are directly sprayed into an incinerator and incinerated. Any of these methods has a problem that it is difficult to maintain the incinerator. It is desirable to reuse the incinerated solid ash, but ash that is not reused is brought to the final disposal site, which requires extra time and effort. In addition, there are environmental problems such as foul odors due to incineration, air pollution due to smoke, and dioxins caused by the use of fossil fuels. is there. Also,
Although suitable for small-scale processing with a throughput of less than 10 tons / day, it is not suitable for medium-scale or large-scale, and has the disadvantage of high running costs.

[0004] On the other hand, in the methane fermentation activated sludge treatment method, shochu distillation lees are separated into solid and liquid by centrifugation, and the separated liquid is subjected to anaerobic treatment by methane fermentation, then activated sludge treatment for several days and discharged. The separated solids are incinerated or used as fertilizer and feed. This treatment method is suitable for a large-scale treatment facility having a treatment amount of 100 tons / day or more. However, a large site is required, the decomposition by microbial treatment takes a long time, the odor peculiar to methane ejected by methane fermentation is generated, the solid content after solid-liquid separation, and excess sludge from activated sludge treatment. There are problems such as processing methods. In addition, it is possible to convert the generated methane gas into energy for effective use.However, this requires specialized technicians and enormous costs for capital investment. Not a way. Furthermore, since the initial cost and the running cost are high, it cannot be said that it is a practical processing method at present.

[0005]

[Problems to be Solved by the Invention] However, according to the ratification of the international environmental treaty, the "Treaty on the Prevention of Marine Pollution by Discarding Waste and Other Objects" (London Treaty, November 1993), Ocean dumping is virtually completely banned. For this reason, there has been a strong demand for a method and an apparatus capable of performing a large amount of organic waste such as shochu distilled lees at low cost without being environmentally limited.

The present invention has been made in view of the above circumstances, and an object of the present invention is that the equipment cost is relatively low, the running cost is less than that of the conventional method, and the present invention is suitable for a new era that is environmentally friendly. It is to provide an organic waste chemical and biological treatment system.

[0007]

DISCLOSURE OF THE INVENTION The present invention makes it possible to easily treat organic wastes, and to reduce solids and liquids discharged as a result of treatment to levels conforming to environmental standards. The present invention relates to a waste chemical and biological treatment system that can be effectively reused, and the object of the present invention is to provide a means for supplying raw water from a raw water tank, an ozone generator for supplying ozone, the raw water and This is achieved by providing means for gas-liquid mixing of ozone, means for aggregating solids in the raw water mixed with the gas-liquid, and means for solid-liquid separation of the raw water agglomerated with the solids.

Further, the above object of the present invention is to provide a means for supplying mist or raw water from a raw water tank, an ozone generator for supplying ozone, and a method for forming the mist or raw water and the ozone. It is also achieved by providing a means for contact mixing, a means for aggregating the solids in the contact-mixed raw water, and a means for solid-liquid separation of the raw water agglomerated with the solids.

Further, the object of the present invention is a waste chemical treatment system having an ozone biological reaction tank, wherein the ozone biological reaction tank mixes the treated water with ozone supplied from an ozone generator. This is also achieved by providing an ozone treatment unit that performs the treatment, and a biological treatment unit that aerates the gas-liquid mixed treated water. In this case, the treated water circulates between the ozone treatment unit and the biological treatment unit. Means for supplying treated water from the biological treatment section to the ozone treatment section.

Still another object of the present invention is to provide a means for supplying raw water from a raw water tank, an ozone generator for supplying ozone, a means for gas-liquid mixing the raw water and the ozone,
Means for aggregating the solids in the gas-liquid mixed raw water, and means for solid-liquid separation of the raw water agglomerated with the solids, and further treating the treated water as the solid-liquid separated raw water with ozone An ozone treatment unit to be treated, and a biological treatment unit provided with aeration means for biologically treating the ozone-treated water,
This can also be achieved by including means for supplying the treated water from the biological treatment section to the ozone treatment section, and means for circulating the treated water between the ozone treatment section and the biological treatment section.

Still another object of the present invention is to provide a means for supplying mist or raw water from a raw water tank, an ozone generator for supplying ozone, the mist or raw water and the ozone. A means for contact-mixing, a means for coagulating solids in the contact-mixed raw water, and a means for solid-liquid separation of the raw water having the solids condensed,
An ozone treatment unit for performing ozone treatment on the treated water that is the solid-liquid separated raw water, a biological treatment unit including an aeration unit for biologically treating the ozonized treated water, and the ozone treatment unit from the biological treatment unit. Means for supplying the treated water to
This is also achieved by providing means for circulating the treated water between the ozone treatment section and the biological treatment section.

In these cases, the raw water may be an organic waste, or the raw water may be an organic waste pulverized into fine particles of a unit of 10 μm. It may be diluted with water.

Another object of the present invention is to provide a waste chemical and biological treatment system having a contact oxidation tank, wherein ozone supplied from an ozone generator is mixed with treated water sent from the contact oxidation tank. It is also achieved by providing means for sterilization, decolorization and deodorization. In this case, the ozone supplied from the ozone generator is mixed with the treated water sent from the contact oxidation tank to sterilize, decolorize, and deodorize the treated water. For supplying the raw water to the raw water tank.

Further, the above object of the present invention is to provide an aeration tank and / or
Or a waste chemical treatment system provided with a contact oxidation tank, in the form of a powder having a size of 3 to 10 mm, or a rod having a size of 10 to 20 mm or a cross section having a minor axis of 3 mm or more and a length of 10 mm or more. The present invention can also be achieved by providing a microbial culture substrate in the aeration tank and / or the contact oxidation tank in a state in which the coniferous chip material is used as it is or in an assembled state.

On the other hand, in order to achieve the above object of the present invention,
A microbial culture substrate using softwood as a chip material is optimal, and the chip material has a size of 3 to 10 mm or 1
It is more effectively achieved by using a microorganism culture substrate having a size of 0 to 20 mm or a cross-sectional minor axis of 3 mm or more and a length of 10 mm or more.

In order to achieve the above object of the present invention, a means for supplying mist or raw water from a raw water tank, an ozone generator for supplying ozone, the mist or raw water as described above, This can also be achieved by using an ozone gas phase reaction device provided with a means for contacting and mixing ozone with the ozone.

Further, the above object of the present invention can be achieved by a method in which organic waste is allowed to act on gaseous ozone gas. In this case, the organic waste is in a liquid state, It is effective to increase the specific surface area of the municipal waste.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings. Ozone is a substance that also exists in nature, and its structure is, as shown in FIG.
Oxygen atoms are arranged in an isosceles triangle with an apex angle of 116.87 degrees, and the bond distance is 0.1278 nm. Ozone has a strong oxidizing action, a bactericidal action, a deodorizing action, and a decolorizing action. In particular, it is known that its bactericidal action and oxidizing action are much stronger than chlorine. Many of the products produced by the oxidation of ozone are the same as those produced by oxygen, so that microorganisms can ingest and degrade it as nutrients. Also, ozone O ₃ spontaneously self-decomposes to oxygen O ₂ even at room temperature, and a volume increase corresponding to 2O ₃ = 3O ₂ has been confirmed. The decomposition rate of ozone is higher as the ozone concentration is higher, and varies depending on the pressure, the material of the container in contact, and the solution in contact. Decomposition of ozone in aqueous solution is relatively short (several tens of minutes)
Self-decomposes into oxygen. For this reason, the excess ozone finally returns to oxygen and does not cause secondary pollution. The decomposition mechanism of ozone in water is as shown in FIG. Such properties of ozone are effective for the treatment of organic and inorganic wastes in today's environment where environmental standards are important.

FIG. 3 shows a configuration example of a waste chemical and biological treatment system according to the present invention. This system comprises a raw water tank 1, 1
The main components are the next reaction tank 2 or the ozone gas phase reaction tower 16, the solid-liquid separator 6, the ozone biological reaction tank 7, the aeration tank 10, the precipitation tank 11, the contact oxidation tank 12, the sterilization / decolorization tank 13, and the ozone generator 14. It is a component. Here, the aeration tank 10 and the contact oxidation tank 12 are collectively referred to as biotreatment tanks for performing microbial treatment. An ozone killer (not shown) is installed on the roof. Hereinafter, a processing example using shochu lees as the organic waste will be described in detail with reference to the system configuration example of FIG.

The waste to be treated is put into the raw water tank 1 as it is or after being pulverized into fine particles by a pulverizer, preferably into fine particles having a diameter of about 10 μm. The shochu lees fed into the raw water tank 1 is diluted with water, for example, twice. If the waste to be treated has a low viscosity, it may not be diluted with water. Hereinafter, undiluted or diluted waste will be referred to as raw water.

This raw water is sent to the primary reaction tank 2 or the ozone gas phase reaction tower 16. In the primary reaction tank 2, high-concentration or low-concentration ozone water mixed in a gas-liquid mixing unit (not shown) and raw water are mixed, and in the ozone gas phase reaction tower 16, ozone gas and raw water are mixed. You.

The ozone gas used in the present invention is prepared as described below. When ozone is taken in by a compressor, compressed under high pressure, and activated by applying electric energy to oxygen having a purity of 90% or more through an oxygen concentrator, a part of dissociated or excited oxygen is converted to ozone. In the above-mentioned case, there is a method using an oxygen cylinder without using air. The ozone generator is irradiated with light (ultraviolet rays, X-rays, etc.), radiation,
Some are based on electrolysis, silent discharge method, etc. FIG. 4 shows a principle diagram of the silent discharge method. FIG. 5 shows a basic configuration of the ozone generator. The silent discharge method shown in FIG.
When an AC high voltage is applied between the electrodes 19 via the dielectric 18, a silent discharge is generated, and oxygen (purity of 90% or more) is caused to flow in the discharge space to dissociate or excite oxygen molecules to generate ozone. It is. The basic configuration of the ozone generator shown in FIG. 5 is as follows. The air is supplied to the air supply and drying device 30 and dried, and then introduced into the ozone generator 32, or the air concentrator 31 is used depending on the application. A method of generating ozone by passing through can be adopted. The ozone generator 3
2 is configured to operate in conjunction with the cooling device 34 and the power control device 33.

The ozone gas generated by the ozone generator 14 is sent to a gas-liquid mixing unit. The gas-liquid mixing unit used in the present invention is an ozone supply device described in Japanese Patent Application No. 62-33149, a counter-flow ozone. Supply device, Japanese Patent Application No. Sho 62
No. 33149, a combined use of an ozone supply device and a counter-flow ozone supply device, or a mixing pump type supply device is used. 6 to 8 show Japanese Patent Application No. 62-3314.
9 shows an ozone supply device indicated by No. 9; This ozone supply device includes a main pipe 50 and a branch pipe 51, and includes a control box 52 and a frame 53.
The main pipe 50 is fitted in the middle of the water flow pipe 55 via the flange 54, and is composed of an upstream magnetic processing section 56 and a downstream secondary mixing section 57. The magnetic processing section 56 and the secondary mixing section 57 The flange portion 58 can be divided freely. The magnetic processing unit 56 is provided with a main water flow 59 flowing through the main pipe 50.
The main water stream 59 is preliminarily magnetically treated by the rod-shaped magnets 60 so that ozone is easily mixed and dissolved. The branch stream 61 flowing from the water stream pipe 55 through the branch pipe 51 is injected with ozone from an ozone generator, and is first stirred by a primary mixing section 63 provided inside an internal pipe 62 to perform primary mixing and dissolution processing of ozone. Do. Next, the branch stream 65 into which ozone has been injected is transferred to the internal pipe 6.
At 2, the water is discharged into the main pipe 50 against the main water flow 59 to mix the two water flows. The mixed main water flow 64 is agitated in a secondary mixing section 57 including a plurality of resistance rods 67 arranged radially in a state of intersecting the main water flow 64 over the entire downstream side of the main pipe 50, and the main water flow 59 is mixed with the main water flow 59. Ozone injected diversion 65
And ozone can be quickly, evenly injected, mixed and dissolved in the high-speed water stream.

FIG. 9 is a diagram showing the configuration of a counter-flow ozone supply device. This ozone supply device includes a main pipe 80, a branch pipe 8
1, a suction pump 86 and an ejector 87 for injecting ozone. The water flowing through the water flow pipe 82 is supplied to the branch pipe 83 by a main water flow 84 flowing through the main pipe 80.
And a branch 85 flowing through the branch pipe 81. The main water flow 84 flows through the main pipe 80 in the downstream direction as it is. One branch 85 is forcibly sucked by the suction pump 86 and flows through the branch pipe 81. The pressure of the branch 85 flowing through the branch 81 by the suction pump 86 is 1.4 to 2.0 kg / cm ^2.
It is. The ejector 8 is placed in the branch 85 having this pressure.
Ozone gas is injected from FIG. The branch 89 into which the ozone gas is injected merges with the main pipe 80 from the branch pipe outlet 88. The tributary 89 into which the ozone water or ozone gas is injected from the branch pipe outlet 88 flows back in the main water flow 84 flowing through the main pipe because the pressure from the suction pump is applied, and dissolves the ozone water or ozone gas efficiently. Can be. In this way, high or low concentration ozone water or ozone gas is supplied to each ozone reaction tank.

The above two gas-liquid mixing units, that is, the combined use of the ozone supply device and the counter-flow ozone supply device disclosed in Japanese Patent Application No. 62-33149 are disclosed in Japanese Patent Application No. 62-33149. The object of the present invention is to obtain a gas-liquid mixing unit having a higher processing efficiency by arranging the ozone supply device indicated by (1) and the counterflow ozone supply device in series.

FIG. 10 shows the structure of the mixing pump.
The main components of the mixing pump are an ozone gas injection port 90, a suction port 91, a discharge port 92, a shear propeller 93, a fixed blade 94, an impeller 95, and a shaft 96. The ozone gas sent from the ozone generator is injected from the ozone gas injection port 90 into the raw water flowing from the suction port 91. The liquid flowing into the mixing pump contains foreign matters such as shochu lees. These foreign matters are caused by the rotation of the shear propeller 93 and the fixed blades 94.
Finely crushed. At the same time, the ozone gas injected from the ozone gas injection port 90 is mixed into the liquid, and the impeller 95
Is discharged from the discharge port 92.

In the primary reaction tank 2, ozone water or ozone gas mixed by the various gas-liquid mixing units described above and raw water are mixed. The purpose of ozone treatment here is
First, sterilizing various bacteria in raw water, second, decolorizing and deodorizing raw water, and third, oxidizing and decomposing organic substances in raw water to lower molecular weight organic substances. It is to promote microbial treatment, and fourthly, to agglomerate solids in raw water. The ozone concentration of the ozone water mixed in the gas-liquid mixing unit is 10 g / Nm ³ or more. The ozone concentration is determined in consideration of the type of raw water, the amount of organic waste, and the like. For example, when the amount of the organic waste in the raw water is large, it is necessary to increase the ozone concentration in order to sufficiently promote the oxidation and decomposition of the organic waste. Conversely, if the amount of organic waste in the raw water is small, it is considered that the ozone concentration required for the oxidation and decomposition of the organic waste is not so high, so low-concentration ozone water should be used. it can.

When the ozone gas phase reaction tower 16 is used instead of the primary reaction tank 3, a method in which raw water is allowed to act on gaseous ozone as shown in FIG. FIG.
FIG. 1 (A) is a schematic diagram showing a configuration of an ozone gas phase reaction tower. In this figure, ozone sent from the ozone generator 14 is introduced into the ozone gas phase reaction tower 16. The ozone gas phase reaction tower 16 is provided with an ozone monitor 103, which monitors the ozone concentration in the ozone gas phase reaction tower so as to keep the ozone concentration constant. The ozone monitor 103 is connected to an ozone controller 104, and is configured so that the amount of ozone from the ozone generator 14 can be automatically adjusted according to a change in ozone concentration. The raw water is sprayed or atomized from the spray tube 101 above the ozone gas phase reaction tower 16 through the tube 105, and is sprayed in the form of fine particles. The reason why the raw water is formed into fine particles is to increase the surface area in contact with the ozone gas as much as possible and to efficiently perform sterilization, decolorization, deodorization, oxidation, and decomposition treatment. FIG.
(B) and FIG. 11 (C) show an example of an apparatus for spraying raw water in the form of fine particles. FIG.
(B) is a figure which shows typically the part of a spray tube. The pipe 105 through which the raw water passes can rotate at an arbitrary rotation speed, and can be effectively sprayed into the ozone gas phase reaction tower. FIG. 11C is a diagram viewed from the direction of arrow X in FIG. The spray tube 101 has a cross-shaped form, and a small spray port 110 for forming raw water into fine particles is provided in each part of the cross-shaped spray tube 101. By using the ozone gas phase reaction tower 16 having the above configuration, the reaction time required in the primary reaction tank 2 for about 40 minutes can be reduced in a short time of about 2 to 4 minutes by sterilization, decolorization, Processing such as deodorization, oxidation, and decomposition can be performed. The ozone-treated raw water staying in the lower part of the ozone gas phase reaction tower is transferred from the outlet 102 to the ozone agglomeration tank 4. The ozone gas is subjected to an exhaust gas treatment by the ozone killer 3, changed into oxygen, and released later. The shape of the spray tube 101 described above is one embodiment, and is not intended to limit the present invention. That is, any form can be used as long as the raw water can be sprayed into the ozone gas phase reaction tower.

In the ozone flocculation tank 4, the ozone-treated raw water is temporarily retained. This is because treatment with ozone has an effect of coagulating solids in raw water in addition to sterilization, decolorization, deodorization, oxidation, and decomposition. As a result of the convection in the ozone coagulation tank 4, the coagulation effect is promoted. After standing for a certain period of time, in principle, non-drug injection is performed depending on the raw water to be treated.
After injecting a flocculant such as a polymer or a polymer flocculant, the stirrer 5
With stirring. This process causes the solids in the raw water to aggregate.

After coagulation of the solid content in the raw water, the raw water is sent from the ozone coagulation tank 4 to the solid-liquid separation device 6. The solid-liquid separator 6 separates a solid content and a liquid content in the raw water. Examples of the solid-liquid separator include a centrifugal separator, a decanter, a press filter, and a multi-disk type biological separator. The separated solids are sent to a composting device or a high-speed mineralizer 15 to be composted, reduced in volume, or mineralized. One of the separated liquids is sent to the ozone biological reaction tank 7. Hereinafter, the liquid separated by the solid-liquid separation device 6 is referred to as treated water.

As shown in the schematic diagram of FIG. 3, the ozone bioreactor 7 has an ozone treatment section 8A and a biological treatment section 8B.
It has a tank configuration. The ozone treatment unit 8A is a tank for performing ozone treatment, and the biological treatment unit 8B is a tank for performing microorganism treatment. The role of each tank is as shown below. In the ozone treatment unit 8A, CO, which is an obstacle factor for microbial nitrification,
In order to decompose D and BOD and decompose the SS component in the processing liquid, and to achieve more efficient biodegradation, an ozone reaction is performed on the supplied processing water. The ozone reaction is
This is performed by mixing the ozone gas sent from the ozone generator 14 and the treated water by the gas-liquid mixing unit described above. The ozone concentration injected here is BO
It is changed by the amount of D or COD. The treated water subjected to the ozone reaction in the ozone treatment unit 8A is sent to the next biological treatment unit 8B. The biological treatment section 8B is aerated by air blown by the blower pump 9, sets conditions under which aerobic bacteria can easily propagate, and performs aerobic treatment. Conventionally, the mainstream of decomposition treatment by microorganisms is to perform anaerobic treatment using anaerobic bacteria. This is because an anaerobic bacterium has a higher decomposition treatment capacity than an aerobic bacterium, and is determined to be suitable for decomposing an organic waste having a high concentration. Anaerobic bacteria can live in an anaerobic atmosphere without oxygen, but anaerobic bacteria die at the end of their life. This carcass accumulates and becomes a residue such as sludge, causing a problem of contamination. On the other hand, it was found that among aerobic bacteria, bacteria having strong vitality exist and some eat anaerobic bacteria. Propagation of these aerobic bacteria against anaerobic bacteria in a well-balanced manner enables the processing of dead bodies such as anaerobic bacteria, so that sludge such as sludge does not occur. can do.

The above process in the ozone biological reaction tank 7 is repeated for a certain period of time, for example, 24 hours. The treated water subjected to the ozone reaction in the ozone treatment unit 8A is supplied to the biological treatment unit
B and aerobic processed. Thereafter, the water is sent from the lower part of the biological treatment part 8B to the ozone treatment part 8A again by the pump, and the above-described steps are repeated. In the present invention, in the above-mentioned ozone biological reaction tank 7, oxidation by ozone,
By effectively utilizing the characteristics of the aerobic bacteria and the decomposition treatment, it has become possible to reduce the residue and to use microorganisms more efficiently.

The treated water circulated in the ozone biological reaction tank 7 for a certain period is sent to the aeration tank 10. Examples of the aeration tank used in the present invention, a contact type aeration tank, a step type aeration tank,
And the aeration tank etc. which combined both are mentioned. The selection of which type of aeration tank to use is made based on the scale of the processing system and the concentration of the processed material. The aeration treatment is performed in order to reduce the BOD value efficiently by creating a state where there is a large amount of oxygen and a state where there is no oxygen in the process of nitrification of the ammonium nitrogen by microorganisms in the wastewater treatment. Therefore, the blower pump 9 has a role of always sending fresh air into the aeration tank 10 into the aeration tank.

In the step type aeration tank, raw water is split and flows into the subdivided aeration tank. In this method, two or more tanks having an appropriate volume are provided in stages so that microorganisms in the aeration tank are efficiently decomposed. In this step-type aeration tank, aeration may be performed by repeating aerobic / anaerobic by microorganisms attached to and propagated on the cedar chip material. The volume of the treated water flowing into each tank in the step type aeration tank is different. Here, an outline of the processing steps in the step type aeration tank is shown in FIG. In FIG. 12, the number of tanks is three, but is not intended to be limited to three as described above. It is assumed that the volume of treated water sent from the ozone treatment tank to the step-type aeration tank is 200. As shown in FIG. 12, treated water having volumes of 100, 70, and 30, respectively, flows into each of the tanks A, B, and C in the step-type aeration tank. The amount of microorganisms present in each treatment tank depends on the BOD and COD that can be treated.
You decide the amount of. Thus, by changing the amount of treated water flowing into each tank in a stepwise manner, the treatment capacity of microorganisms could be increased. The time during which the processing liquid is retained in the step type aeration tank is the same as the processing period performed in the ozone biological reaction tank 7, and is 24 hours in the case of the above example. In such a process, the treated water whose BOD and COD have been reduced is sent to the sedimentation tank 11. If the treatment cannot be carried out sufficiently in the step type aeration tank, it is returned to the ozone treatment section 8A of the ozone biological reaction tank 7 again and treated in the same manner.

FIG. 13 schematically shows a contact type aeration tank 120. FIG. 14 shows a schematic diagram of the configuration of the cedar chip material 121 shown here. As shown in FIG. 14, on the surface of the cedar chip material 121, anaerobic microorganisms (anaerobic bacteria) are layer 12
2 and aerobic microorganisms (aerobic bacteria)
Forms a layer 123 and is in contact with the liquid in the aquarium. FIG.
Microorganisms attached and propagated on the cedar chip material as in 3 are placed in the contact aeration tank 120. In addition, the contact type aeration tank 12
In 0, aeration is constantly performed from the lower part to keep the inside of the tank under aerobic conditions. The aerobic microorganism layer 123 attached and propagated on the cedar chip material absorbs oxygen and discharges water. On the other hand, the anaerobic microorganism layer 122
It absorbs nutrients such as D, COD, N and P, emits carbon dioxide, hydrogen, sulfur and nitrogen into the air, and ammonia, nitrogen oxides (NO ₂ , NO ₃ ) and other metabolites in the water Release. By performing the treatment in the contact type aeration layer using such aerobic bacteria, there is an advantage that the odor generated during the anaerobic treatment can be suppressed, and the site area can be reduced as compared with the anaerobic treatment.

The treated water coming out of the step type aeration tank, the contact type aeration tank, or the aeration tank using both of them is supplied to the settling tank 1
1 (if not sufficiently processed in the aeration tank, it is returned to the ozone processing unit 8A of the ozone biological reaction tank 7 again and processed in the same manner). Here, mainly, substances having a high specific gravity in the wastewater are removed by microbial treatment using cedar chips. The treated water (supernatant) subjected to the precipitation treatment is sent to the contact oxidation tank 12 or used as dilution water for the raw water tank 1. The treated water sent to the contact oxidation tank 12 almost completely removes the SS having a small specific gravity that could not be removed in the precipitation tank 11. Contact oxidation tank 12
In order to perform treatment with aerobic bacteria and anaerobic bacteria,
Fresh air is always carried into the tank by the blower pump 9. The sediment accumulated in the lower part of one sedimentation tank 11 is sent to the solid-liquid separation device 6 as surplus sludge, and is treated again according to the flow.

From the contact oxidation tank 12, the treated water is sent to a sterilization / decolorization tank 13. The water filtered here is finally sterilized by ozone and discharged as water meeting drainage standards, or sent to a raw water tank as dilution water in the system and reused.

The above step type aeration tank, contact type aeration tank,
In each of the contact oxidation tanks 12, the treated water is decomposed by microorganisms attached to and propagated on the cedar chip material. Here, cedar chips are used, but not limited to cedar.
If it is softwood, it can be used as chip material (or
Tip material may not be used). There are three types of softwood chip materials used in the present invention. (1) Fine powder having a size of about 3-10 mm (2) Three-sided cleaning, three-sided compressed granules, and a size of 10-
20 mm (3) A five-sided rod-shaped one with 5 sides washed and compressed on 5 sides, with a short diameter of the cross section of 3 mm or more and a length of 10 mm or more. FIG. 15 shows an example of the shape of the rod-shaped chip material 130 of (3). The cross-sectional shape of the bar-shaped chip material in FIG. 15 is square, but is not limited to this shape, and may be circular, triangular, rectangular, pentagonal, or any other irregular shape. There may be. In the case of these shapes, the short diameter of the cross section may be 3 mm or more. (1) to (3) above
Of the treatment plants and the type of treated water are selected and used. As the installation form in the bioprocessing tank,
The coniferous chip material is directly put in the above-mentioned (1) to (3), or the mat is assembled along the wall of the aquarium.

In the present invention, the purpose of using coniferous chip material is to propagate microorganisms. In a conventional composting device, sawdust is put into the device, bacteria for forcibly decomposing are injected into the composting device, and a substance to be decomposed is put into the device to decompose. After decomposition, the sawdust was treated as fertilizer with the decomposition product, and was hardly reused. However, in the present invention, the role of the coniferous chip material is limited only to the propagation of microorganisms, so that long-term use is possible without discarding. When using softwood chips, it is necessary to select one that does not use chemicals such as preservatives and insect repellents. Chemicals such as preservatives and insect repellents
This is because it becomes a factor inhibiting the propagation of microorganisms. Timber with a black heart is not used because it is not suitable for microbial propagation. Conifers growing in cold climates are suitable for chippings. Conifers grown in cold regions have a slower growth rate than those grown in warm regions, but have a higher density and a shape that facilitates the propagation of microorganisms. In addition, softwood chip materials are not easily digested by microorganisms, and have a large specific surface area (about 30 m ² / g) and a porosity (7).
5-85%), water retention (around 63%), heat retention,
It has important effects such as oxygen supply. Such conifers are durable and can be used for 5-10 years or more in each treatment tank, and microorganisms can ferment organic substances → decompose →
It has the ability to create the most effective conditions for digestion.

The major microorganisms that adhere to and propagate on the above cedar chip materials are Bacillus and Pseudomo.
genus nas, Zoogloea, Alcaligene
genus s, Flavobacterium, Acinet
obobacter genus, Nitrobactor genus and the like. These microorganisms produce an enormous number of bacterial colonies in cedar chipwood. The bacterium is composed of bacilli and cocci, and these bacilli and cocci perform a specific decomposing action under the condition that the water content is about 63%. Bacilli are responsible for the fermentation and decomposition (corrosion) of animals and plants, and cocci are exhausted from the corrosives and bacilli to gasify. As described above, the organic matter in the sewage that has been subjected to ozonation treatment is treated by the mechanisms in the biological treatment section, contact oxidation tank, and biotreatment tank in the ozone biological reaction tank. can do.

In the above-described treatment process using ozone water or ozone gas, it is necessary to treat residual ozone in the ozonized water and exhaust ozone (unreacted ozone) remaining in the gas as surplus ozone not used for the reaction. At present, there is no regulated value for the concentration of exhaust ozone, but applying environmental standards mutatis mutandis,
It is to be treated to 0.06 ppm or less. Since the residual ozone in water decomposes quickly, the residence time is set to be relatively long (several minutes), so that it is not necessary to take special countermeasures against residual ozone by natural decomposition. on the other hand,
The treatment of exhausted ozone (unreacted ozone) remaining in the gas as surplus ozone without being used in the reaction must be performed. This is because, if the exhaust ozone treatment is not performed, an ozone smell drifts in the vicinity, oxidizes and rusts electric devices and the like in the vicinity, and may adversely affect the human body. The waste ozone treatment includes an activated carbon method, a catalytic method, a combustion method, a chemical cleaning method, and the like. In actual exhaust ozone treatment, an activated carbon method, a catalyst method, and a combination method of both are generally used. In the activated carbon method, the activated ozone decomposition tower is filled with activated carbon to decompose ozone within a contact time of less than 1 second. Can be released. Depending on the type of activated carbon used, such as density and surface area, activated carbon is generally 3-4
They must be replaced every month. This method is effective for a relatively small processing system. On the other hand, in the catalytic method, a catalytic agent such as manganese or nickel is mainly used, and the ozone is completely reduced to oxygen by setting the temperature of the catalyst tank to 40 ° C. or more and the contact time to about 15 seconds. The combined use of both is used in a large-scale treatment system. First, in the catalytic method, the contact time between the ozone and the catalyst is increased, the load is reduced by removing 98-99%, and then the activated carbon treatment is performed. . This makes it possible to provide a system that combines the advantages of both, such as extending the life of activated carbon. In the system according to the present invention, an ozone killer of an activated carbon type was attached to the roof of the primary reaction tank 5 and the ozone treatment section 10A to perform ozone treatment.

[0042]

Example 1 Types of Shochu Lees (Wheat Shochu Lees) The above samples were divided into two days. Sample 500kg
Is ground in a grinding tank (30 minutes), diluted with 2 tons of water in a mixing and reaction tank, and then circulated with ozone (3.
0 minutes). The SS (31 liters) is removed from the sedimentation tank, and the purifier is operated while transferring the remaining liquid to the balance tank. Drainage was carried out at a ratio of effluent 4 to return water 6. Sample (wheat shochu lees): Date of collection December 20, 1997
Sun (Sat) 13: 30-15: 00 Collection 1 Undiluted solution Collection 2 After completion of oxidation reaction in circulation system Collection 3 Precipitation tank Collection 4 Discharged water (final treated water) Inspection method: Kagoshima Prefectural Industrial Technology Center and Kagoshima Foundation Requested from the Prefectural Environmental Technology Association. result:

-1: undiluted solution

[Table 1]

-2: 30 minutes after the reaction tank

[Table 2]

-3: settling tank

[Table 3]

-4: discharge water

[Table 4]

[0047]

Example 2 The effluent obtained in Example 1 was brought to the Kagoshima Prefectural Institute of Environmental Technology, and water for measurement was collected in a submerged tank (reaction tank) and the final effluent.

[0048]

[Table 5]

In the above description, the chemical treatment of shochu lees was described. However, as the water treatment, it can be applied to deodorization, decolorization, THM reduction and removal of trace organic substances in advanced water purification treatment, and deodorization, decolorization, sterilization in advanced sewage treatment. It can be applied to COD removal, can be applied to deodorization, decolorization, and sterilization of advanced human waste treatment, can be applied to COD removal, decolorization, cyanide removal, and phenol removal of factory wastewater treatment, and can be used for water purification, decolorization, and deodorization of seawater desalination treatment. Applicable to pool water treatment, decolorization, deodorization, sterilization. The gas treatment can be applied to deodorization odor treatment (sewage odor, human urine odor), smoke removal treatment for denitration, and treatment in a storage for sterilization. Further, it is applicable to prevention of slime adhesion in pipes, oxidation and bleaching of chemicals.

[0050]

As described above, according to the waste chemical and biological treatment system of the present invention, the solid content in the organic waste liquid is aggregated by the oxidation reaction with ozone, so that the filtration and / or the solid-liquid separation can be easily performed. And it can be done in a short time. Maintenance is easy, and the separated solid can be used as a raw material for a composting device or a high-speed mineralization device. In addition, the ozone treatment section in the ozone biological reaction tank decomposes COD, BOD, and SS in the treated water by ozone treatment of the treated water, and treats the microorganisms in the biological treatment section with the treatment efficiency of microorganisms mainly composed of aerobic bacteria. Can be increased. In biological treatment, it is possible to perform treatment with less residue by decomposing using a microorganism group mainly composed of aerobic bacteria propagated on a durable softwood chip material. Also, ozone used in the waste chemical and biological treatment system of the present invention exists in nature, and excess ozone returns to oxygen, so there is no danger of secondary pollution.
Clean without harming the environment. Also, when comparing the running cost with the conventional method, both the incineration type treatment method and the methane fermentation activated sludge treatment method cost about 2,000 to 6,000 yen per ton of the treated amount, whereas the present invention provides a treated amount of 1 ton. It was less than 2000 yen per hit.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a chemical structure of ozone.

FIG. 2 is a view showing a decomposition process of ozone in water.

FIG. 3 is a diagram showing a flow of an embodiment of the waste chemical and biological treatment system of the present invention.

FIG. 4 is a diagram showing a structure of an ozone generator using a silent discharge method.

FIG. 5 is a diagram showing a mechanism of an ozonizer.

FIG. 6 is a perspective view schematically showing an ozone supply device disclosed in Japanese Patent Application No. 62-33149.

FIG. 7 is a schematic side view including a partial cross section of a magnetic processing unit of the ozone supply device of Japanese Patent Application No. 62-33149.

FIG. 8 is a schematic side view of a secondary mixing section of an ozone supply device disclosed in Japanese Patent Application No. 62-33149.

FIG. 9 is a view schematically showing a counter-flow ozone supply device used in the present invention.

FIG. 10 is a sectional view of a mixing pump used in the present invention.

11A and 11B are schematic diagrams showing the configuration of an ozone gas phase reaction tower according to the present invention, wherein FIG. 11A is a schematic front view, FIG. 11B is an enlarged view of a scatter tube, and FIG. 2 shows a view from the direction of X. FIG.

FIG. 12 is a schematic diagram showing a configuration of an embodiment of the step type aeration tank of the present invention.

FIG. 13 is a diagram schematically showing a contact-type aeration tank in which a cedar chip material on which microorganisms are attached and propagated is installed.

FIG. 14 is a schematic diagram showing a structure of a chip material which is installed in a contact type aeration tank and to which microorganisms are attached and propagated.

FIG. 15 is a schematic diagram showing an example of a softwood bar-shaped chip material used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Raw water tank 2 Primary reaction tank 3 Ozone killer 4 Ozone flocculation tank 5 Stirrer 6 Solid-liquid separation device 7 Ozone biological reaction tank 8A Ozone treatment part 8B Biological treatment part 9 Blower pump 10 Aeration tank 11 Precipitation tank 12 Contact oxidation tank 13 Sterilization / decolorization tank 14 Ozone generator 15 Composting device or high-speed mineralizer 16 Ozone gas phase reaction tower 18 Dielectric 19 Electrode 30 Air supply and drying device 31 Air concentrator 32 Ozone generator 33 Power control device 34 Cooling device 50 Main pipe 51 Split flow pipe 52 Control box 53 Frame 54 Flange section 55 Water flow pipe 56 Magnetic processing section 57 Secondary mixing section 58 Flange section 59 Main water flow 60 Rod magnet 61 Split flow 62 Internal pipe 63 Primary mixing section 64 Mixed main water flow 65 Ozone-injected split flow 67 Resistance rod 80 Main pipe 81 Branch pipe 82 Water flow pipe 83 Branch pipe 4 Main Water Flow 85 Branch Flow 86 Suction Pump 87 Ejector 88 Branch Pipe Outlet 89 Branch Flow Injected with Ozone Gas 90 Ozone Gas Injection 91 Suction Port 92 Discharge Port 93 Shear Propeller 94 Fixed Blade 95 Impeller 96 Shaft 101 Spraying Tube 102 Discharge Port 103 Ozone Monitor 104 Ozone controller 105 Tube 110 Spray port 120 Contact aeration tank 121 Chip material 122 Anaerobic microorganism layer 123 Aerobic microorganism layer 130 Rod-shaped chip

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 11, 1999 (1999.6.1
1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Waste chemical biological treatment system

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the use of ozone for waste (inorganic and organic waste) discarded in, for example, a water purification plant, a food processing plant, a pig farm, a cattle farm, a poultry farm, a brewery, and the like. The present invention relates to a waste chemical biological treatment system for biologically treating an organic waste treated with ozone by using microorganisms.

[0002]

2. Description of the Related Art For example, distilled shochu lees during the production of shochu is a fermentation residue, and its components are hardly decomposed even by chemical and physical treatments, and it is difficult to dispose of calories. It has been. At present, it is treated by the following method, but due to the high equipment costs and running costs of the treatment facility, it is a factor that the user side will not be able to proceed with the introduction even from the viewpoint of profitability. Most of the fermentation residue treatment has to rely on ocean dumping.

[0003] Conventional methods for treating shochu distillation lees include an incineration type treatment method and a methane fermentation activated sludge treatment method. There are two main types of incineration treatment. (1) A method of centrifuging or dewatering shochu distillation lees, incinerating solids, concentrating and incinerating desorbed water, and separately treating condensed water with microorganisms and discharging. (2) A method in which shochu distillation lees are directly sprayed into an incinerator and incinerated. Any of these methods has a problem that it is difficult to maintain the incinerator. It is desirable to reuse the incinerated solid ash, but ash that is not reused is brought to the final disposal site, which requires extra time and effort. In addition, there are environmental problems such as foul odors due to incineration, air pollution due to smoke, and dioxins caused by the use of fossil fuels. is there. Also,
Although suitable for small-scale processing with a throughput of less than 10 tons / day, it is not suitable for medium-scale or large-scale, and has the disadvantage of high running costs.

[0004] On the other hand, in the methane fermentation activated sludge treatment method, shochu distillation lees are separated into solid and liquid by centrifugation, and the separated liquid is subjected to anaerobic treatment by methane fermentation, then activated sludge treatment for several days and discharged. The separated solids are incinerated or used as fertilizer and feed. This treatment method is suitable for a large-scale treatment facility having a treatment amount of 100 tons / day or more. However, a large site is required, the decomposition by microbial treatment takes a long time, the odor peculiar to methane ejected by methane fermentation is generated, the solid content after solid-liquid separation, and excess sludge from activated sludge treatment. There are problems such as processing methods. In addition, it is possible to convert the generated methane gas into energy for effective use.However, this requires specialized technicians and enormous costs for capital investment. Not a way. Furthermore, since the initial cost and the running cost are high, it cannot be said that it is a practical processing method at present.

[0005]

[Problems to be Solved by the Invention] However, according to the ratification of the international environmental treaty, the "Treaty on the Prevention of Marine Pollution by Discarding Waste and Other Objects" (London Treaty, November 1993), Ocean dumping is virtually completely banned. For this reason, there has been a strong demand for a method and an apparatus capable of performing a large amount of organic waste such as shochu distilled lees at low cost without being environmentally limited.

The present invention has been made in view of the above circumstances, and an object of the present invention is that the equipment cost is relatively low, the running cost is less than that of the conventional method, and the present invention is suitable for a new era that is environmentally friendly. It is to provide an organic waste chemical and biological treatment system.

[0007]

DISCLOSURE OF THE INVENTION The present invention makes it possible to easily treat organic wastes, and to reduce solids and liquids discharged as a result of treatment to levels conforming to environmental standards. The present invention relates to a waste chemical and biological treatment system that can be effectively reused, and the object of the present invention is to provide a means for supplying raw water from a raw water tank, an ozone generator for supplying ozone, the raw water and a means for mixing gas and liquid and ozone, by staying the raw water mixed the gas-liquid
This is achieved by providing a means for coagulating the solid content in the raw water mixed with gas and liquid without injecting the coagulant, and a means for solid-liquid separation of the raw water in which the solid content is coagulated.

Further, the above object of the present invention is to provide a means for supplying mist or raw water from a raw water tank, an ozone generator for supplying ozone, and a method for forming the mist or raw water and the ozone. Means for contact mixing, and the contact mixing and mixing of the raw water , followed by the contact mixing without injection of a flocculant.
Means for aggregating the solids in raw water together also achieved by having a means for aggregated raw solid-liquid separation of the solids.

Further, the above object of the present invention is a waste chemical and biological treatment system having an ozone biological reaction tank, wherein the ozone biological reaction tank converts treated water and ozone supplied from an ozone generator into a gas-liquid mixture. An ozone treatment section for mixing, and a biological treatment section for performing biological treatment while aerating the gas-liquid mixed treated water , wherein the ozone treatment section and the biological treatment section are combined.
So that the whole treated water circulates for a certain period between
Supplying the treated water from the biological treatment section to the ozone treatment section;
This is also achieved by providing means for supplying .

Still another object of the present invention is to provide a means for supplying raw water from a raw water tank, an ozone generator for supplying ozone, a means for gas-liquid mixing the raw water and the ozone,
Means for aggregating the solids in the gas-liquid mixed raw water, and means for solid-liquid separation of the raw water agglomerated with the solids, and further treating the treated water as the solid-liquid separated raw water with ozone An ozone treatment unit to be treated, and a biological treatment unit provided with aeration means for biologically treating the ozone-treated water,
This can also be achieved by including means for supplying the treated water from the biological treatment section to the ozone treatment section, and means for circulating the treated water between the ozone treatment section and the biological treatment section.

Still another object of the present invention is to provide a means for supplying mist or raw water from a raw water tank, an ozone generator for supplying ozone, the mist or raw water and the ozone. A means for contact-mixing, a means for coagulating solids in the contact-mixed raw water, and a means for solid-liquid separation of the raw water having the solids condensed,
An ozone treatment unit for performing ozone treatment on the treated water that is the solid-liquid separated raw water, a biological treatment unit including an aeration unit for biologically treating the ozonized treated water, and the ozone treatment unit from the biological treatment unit. Means for supplying the treated water to
This is also achieved by providing means for circulating the treated water between the ozone treatment section and the biological treatment section.

Further, means for supplying raw water from a raw water tank.
And an ozone generator for supplying ozone, the raw water and the ozone
A means for gas-liquid mixing of ozone and a gas-liquid mixed source;
Means for coagulating solids in water, and coagulation of the solids
And a means for solid-liquid separation of the raw water.
Ozone treatment for treating treated water, which is separated raw water, with ozone
And biological treatment of the ozone-treated water.
A biological treatment unit provided with an air means;
Means for supplying the treated water to the ozone treatment section,
Water circulates between the ozonation unit and the biological treatment unit
And ozone treatment and biological treatment
Means for aerating the mixed liquid, and the mixed liquid
To the ozone treatment section at a predetermined rate, and the remaining
Means for supplying the mixed solution to the sedimentation tank;
Means for precipitating the gas-treated mixture, and
Means for catalytically oxidizing the treated mixture,
Means for ozone-treating the mixed liquid obtained.
This is also achieved.

Means for supplying raw water from a raw water tank
And an ozone generator for supplying ozone, the raw water and the ozone
A means for gas-liquid mixing of ozone and a gas-liquid mixed source;
Means for coagulating solids in water, and coagulation of the solids
And a means for solid-liquid separation of the raw water.
Ozone treatment for treating treated water, which is separated raw water, with ozone
And biological treatment of the ozone-treated water.
A biological treatment unit provided with an air means;
Means for supplying the treated water to the ozone treatment section,
Water circulates between the ozonation unit and the biological treatment unit
And ozone treatment and biological treatment
Means for aerating the mixed liquid, and the mixed liquid
Supply the mixture to the sedimentation tank if
And the aerated mixture does not have the prescribed water quality
Means for returning to the ozone treatment unit, and the sedimentation tank
Means for precipitating the aerated mixed solution;
A means for catalytically oxidizing the precipitated liquid mixture;
Means for ozone-treating the oxidized mixture.
This is also achieved by:

[0014] In these cases, the raw water may be an organic waste, also the raw water may be an organic waste that has been ground to a fine of 10μm units.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. Ozone is a substance that also exists in nature, and its structure is, as shown in FIG.
Oxygen atoms are arranged in an isosceles triangle with an apex angle of 116.87 degrees, and the bond distance is 0.1278 nm. Ozone has a strong oxidizing action, a bactericidal action, a deodorizing action, and a decolorizing action. In particular, it is known that its bactericidal action and oxidizing action are much stronger than chlorine. Many of the products produced by the oxidation of ozone are the same as those produced by oxygen, so that microorganisms can ingest and degrade it as nutrients. Also, ozone O ₃ spontaneously self-decomposes to oxygen O ₂ even at room temperature, and a volume increase corresponding to 2O ₃ = 3O ₂ has been confirmed. The decomposition rate of ozone is higher as the ozone concentration is higher, and varies depending on the pressure, the material of the container in contact, and the solution in contact. Decomposition of ozone in aqueous solution is relatively short (several tens of minutes)
Self-decomposes into oxygen. For this reason, the excess ozone finally returns to oxygen and does not cause secondary pollution. The decomposition mechanism of ozone in water is as shown in FIG. Such properties of ozone are effective for the treatment of organic and inorganic wastes in today's environment where environmental standards are important.

FIG. 3 shows an example of the configuration of a waste chemical and biological treatment system according to the present invention. This system comprises a raw water tank 1, 1
The main components are the next reaction tank 2 or the ozone gas phase reaction tower 16, the solid-liquid separator 6, the ozone biological reaction tank 7, the aeration tank 10, the precipitation tank 11, the contact oxidation tank 12, the sterilization / decolorization tank 13, and the ozone generator 14. It is a component. Here, the aeration tank 10 and the contact oxidation tank 12 are collectively referred to as biotreatment tanks for performing microbial treatment. An ozone killer (not shown) is installed on the roof. Hereinafter, a processing example using shochu lees as the organic waste will be described in detail with reference to the system configuration example of FIG.

The waste to be treated is put into the raw water tank 1 as it is or after being pulverized into fines by a pulverizer, preferably into fines having a diameter of about 10 μm. The shochu lees fed into the raw water tank 1 is diluted with water, for example, twice. If the waste to be treated has a low viscosity, it may not be diluted with water. Hereinafter, undiluted or diluted waste will be referred to as raw water.

This raw water is sent to the primary reaction tank 2 or the ozone gas phase reaction tower 16. In the primary reaction tank 2, high-concentration or low-concentration ozone water mixed in a gas-liquid mixing unit (not shown) and raw water are mixed, and in the ozone gas phase reaction tower 16, ozone gas and raw water are mixed. You.

Ozone gas used in the present invention is prepared as described below. When ozone is taken in by a compressor, compressed under high pressure, and activated by applying electric energy to oxygen having a purity of 90% or more through an oxygen concentrator, a part of dissociated or excited oxygen is converted to ozone. In the above-mentioned case, there is a method using an oxygen cylinder without using air. The ozone generator is irradiated with light (ultraviolet rays, X-rays, etc.), radiation,
Some are based on electrolysis, silent discharge method, etc. FIG. 4 shows a principle diagram of the silent discharge method. FIG. 5 shows a basic configuration of the ozone generator. The silent discharge method shown in FIG.
When an AC high voltage is applied between the electrodes 19 via the dielectric 18, a silent discharge is generated, and oxygen (purity of 90% or more) is caused to flow in the discharge space to dissociate or excite oxygen molecules to generate ozone. It is. The basic configuration of the ozone generator shown in FIG. 5 is as follows. The air is supplied to the air supply and drying device 30 and dried, and then introduced into the ozone generator 32, or the air concentrator 31 is used depending on the application. A method of generating ozone by passing through can be adopted. The ozone generator 3
2 is configured to operate in conjunction with the cooling device 34 and the power control device 33.

The ozone gas generated by the ozone generator 14 is sent to a gas-liquid mixing unit. Supply device, Japanese Patent Application No. Sho 62
No. 33149, a combined use of an ozone supply device and a counter-flow ozone supply device, or a mixing pump type supply device is used. 6 to 8 show Japanese Patent Application No. 62-3314.
9 shows an ozone supply device indicated by No. 9; This ozone supply device includes a main pipe 50 and a branch pipe 51, and includes a control box 52 and a frame 53.
The main pipe 50 is fitted in the middle of the water flow pipe 55 via the flange 54, and is composed of an upstream magnetic processing section 56 and a downstream secondary mixing section 57. The magnetic processing section 56 and the secondary mixing section 57 The flange portion 58 can be divided freely. The magnetic processing unit 56 is provided with a main water flow 59 flowing through the main pipe 50.
The main water stream 59 is preliminarily magnetically treated by the rod-shaped magnets 60 so that ozone is easily mixed and dissolved. The branch stream 61 flowing from the water stream pipe 55 through the branch pipe 51 is injected with ozone from an ozone generator, and is first stirred by a primary mixing section 63 provided inside an internal pipe 62 to perform primary mixing and dissolution processing of ozone. Do. Next, the branch stream 65 into which ozone has been injected is transferred to the internal pipe 6.
At 2, the water is discharged into the main pipe 50 against the main water flow 59 to mix the two water flows. The mixed main water flow 64 is agitated in a secondary mixing section 57 including a plurality of resistance rods 67 arranged radially in a state of intersecting the main water flow 64 over the entire downstream side of the main pipe 50, and the main water flow 59 is mixed with the main water flow 59. Ozone injected diversion 65
And ozone can be quickly, evenly injected, mixed and dissolved in the high-speed water stream.

FIG. 9 is a diagram showing the configuration of a counter-flow type ozone supply device. This ozone supply device includes a main pipe 80, a branch pipe 8
1, a suction pump 86 and an ejector 87 for injecting ozone. The water flowing through the water flow pipe 82 is supplied to the branch pipe 83 by a main water flow 84 flowing through the main pipe 80.
And a branch 85 flowing through the branch pipe 81. The main water flow 84 flows through the main pipe 80 in the downstream direction as it is. One branch 85 is forcibly sucked by the suction pump 86 and flows through the branch pipe 81. The pressure of the branch 85 flowing through the branch 81 by the suction pump 86 is 1.4 to 2.0 kg / cm ^2.
It is. The ejector 8 is placed in the branch 85 having this pressure.
Ozone gas is injected from FIG. The branch 89 into which the ozone gas is injected merges with the main pipe 80 from the branch pipe outlet 88. The tributary 89 into which the ozone water or ozone gas is injected from the branch pipe outlet 88 flows back in the main water flow 84 flowing through the main pipe because the pressure from the suction pump is applied, and dissolves the ozone water or ozone gas efficiently. Can be. In this way, high or low concentration ozone water or ozone gas is supplied to each ozone reaction tank.

The above two gas-liquid mixing units, that is, the combined use of the ozone supply device and the counter-flow ozone supply device disclosed in Japanese Patent Application No. 62-33149 are disclosed in Japanese Patent Application No. 62-33149. It is an object of the present invention to obtain a gas-liquid mixing unit having a higher processing efficiency by arranging the ozone supply device indicated by (1) and the counterflow ozone supply device in series.

FIG. 10 shows the structure of the mixing pump.
The main components of the mixing pump are an ozone gas injection port 90, a suction port 91, a discharge port 92, a shear propeller 93, a fixed blade 94, an impeller 95, and a shaft 96. The ozone gas sent from the ozone generator is injected from the ozone gas injection port 90 into the raw water flowing from the suction port 91. The liquid flowing into the mixing pump contains foreign matters such as shochu lees. These foreign matters are caused by the rotation of the shear propeller 93 and the fixed blades 94.
Finely crushed. At the same time, the ozone gas injected from the ozone gas injection port 90 is mixed into the liquid, and the impeller 95
Is discharged from the discharge port 92.

In the primary reaction tank 2, ozone water or ozone gas mixed by the various gas-liquid mixing units described above and raw water are mixed. The purpose of ozone treatment here is
First, sterilizing various bacteria in raw water, second, decolorizing and deodorizing raw water, and third, oxidizing and decomposing organic substances in raw water to lower molecular weight organic substances. It is to promote microbial treatment, and fourthly, to agglomerate solids in raw water. The ozone concentration of the ozone water mixed in the gas-liquid mixing unit is 10 g / Nm ³ or more. The ozone concentration is determined in consideration of the type of raw water, the amount of organic waste, and the like. For example, when the amount of the organic waste in the raw water is large, it is necessary to increase the ozone concentration in order to sufficiently promote the oxidation and decomposition of the organic waste. Conversely, if the amount of organic waste in the raw water is small, it is considered that the ozone concentration required for the oxidation and decomposition of the organic waste is not so high, so low-concentration ozone water should be used. it can.

When the ozone gas phase reaction tower 16 is used instead of the primary reaction tank 3, a method in which raw water is allowed to act on gaseous ozone as shown in FIG. FIG.
FIG. 1 (A) is a schematic diagram showing a configuration of an ozone gas phase reaction tower. In this figure, ozone sent from the ozone generator 14 is introduced into the ozone gas phase reaction tower 16. The ozone gas phase reaction tower 16 is provided with an ozone monitor 103, which monitors the ozone concentration in the ozone gas phase reaction tower so as to keep the ozone concentration constant. The ozone monitor 103 is connected to an ozone controller 104, and is configured so that the amount of ozone from the ozone generator 14 can be automatically adjusted according to a change in ozone concentration. The raw water is sprayed or atomized from the spray tube 101 above the ozone gas phase reaction tower 16 through the tube 105, and is sprayed in the form of fine particles. The reason why the raw water is formed into fine particles is to increase the surface area in contact with the ozone gas as much as possible and to efficiently perform sterilization, decolorization, deodorization, oxidation, and decomposition treatment. FIG.
(B) and FIG. 11 (C) show an example of an apparatus for spraying raw water in the form of fine particles. FIG.
(B) is a figure which shows typically the part of a spray tube. The pipe 105 through which the raw water passes can rotate at an arbitrary rotation speed, and can be effectively sprayed into the ozone gas phase reaction tower. FIG. 11C is a diagram viewed from the direction of arrow X in FIG. The spray tube 101 has a cross-shaped form, and a small spray port 110 for forming raw water into fine particles is provided in each part of the cross-shaped spray tube 101. By using the ozone gas phase reaction tower 16 having the above configuration, the reaction time required in the primary reaction tank 2 for about 40 minutes can be reduced in a short time of about 2 to 4 minutes by sterilization, decolorization, Processing such as deodorization, oxidation, and decomposition can be performed. The ozone-treated raw water staying in the lower part of the ozone gas phase reaction tower is transferred from the outlet 102 to the ozone agglomeration tank 4. The ozone gas is subjected to an exhaust gas treatment by the ozone killer 3, changed into oxygen, and released later. The shape of the spray tube 101 described above is one embodiment, and is not intended to limit the present invention. That is, any form can be used as long as the raw water can be sprayed into the ozone gas phase reaction tower.

In the ozone coagulation tank 4, the ozone-treated raw water is temporarily retained. This is because treatment with ozone has an effect of coagulating solids in raw water in addition to sterilization, decolorization, deodorization, oxidation, and decomposition. As a result of the convection in the ozone coagulation tank 4, the coagulation effect is promoted. After standing for a certain period of time, in principle, non-drug injection is performed depending on the raw water to be treated.
After injecting a flocculant such as a polymer or a polymer flocculant, the stirrer 5
With stirring. This process causes the solids in the raw water to aggregate.

After coagulation of the solid content in the raw water, the raw water is sent from the ozone coagulation tank 4 to the solid-liquid separator 6. The solid-liquid separator 6 separates a solid content and a liquid content in the raw water. Examples of the solid-liquid separator include a centrifugal separator, a decanter, a press filter, and a multi-disk type biological separator. The separated solids are sent to a composting device or a high-speed mineralizer 15 to be composted, reduced in volume, or mineralized. One of the separated liquids is sent to the ozone biological reaction tank 7. Hereinafter, the liquid separated by the solid-liquid separation device 6 is referred to as treated water.

As shown in the schematic diagram of FIG. 3, the ozone bioreactor 7 includes an ozone treatment section 8A and a biological treatment section 8B.
It has a tank configuration. The ozone treatment unit 8A is a tank for performing ozone treatment, and the biological treatment unit 8B is a tank for performing microorganism treatment. The role of each tank is as shown below. In the ozone treatment unit 8A, CO, which is an obstacle factor for microbial nitrification,
In order to decompose D and BOD and decompose the SS component in the processing liquid, and to achieve more efficient biodegradation, an ozone reaction is performed on the supplied processing water. The ozone reaction is
This is performed by mixing the ozone gas sent from the ozone generator 14 and the treated water by the gas-liquid mixing unit described above. The ozone concentration injected here is BO
It is changed by the amount of D or COD. The treated water subjected to the ozone reaction in the ozone treatment unit 8A is sent to the next biological treatment unit 8B. The biological treatment section 8B is aerated by air blown by the blower pump 9, sets conditions under which aerobic bacteria can easily propagate, and performs aerobic treatment. Conventionally, the mainstream of decomposition treatment by microorganisms is to perform anaerobic treatment using anaerobic bacteria. This is because an anaerobic bacterium has a higher decomposition treatment capacity than an aerobic bacterium, and is determined to be suitable for decomposing an organic waste having a high concentration. Anaerobic bacteria can live in an anaerobic atmosphere without oxygen, but anaerobic bacteria die at the end of their life. This carcass accumulates and becomes a residue such as sludge, causing a problem of contamination. On the other hand, it was found that among aerobic bacteria, bacteria having strong vitality exist and some eat anaerobic bacteria. Propagation of these aerobic bacteria against anaerobic bacteria in a well-balanced manner enables the processing of dead bodies such as anaerobic bacteria, so that sludge such as sludge does not occur. can do.

The above process in the ozone biological reaction tank 7 is repeated for a certain period of time, for example, 24 hours. The treated water subjected to the ozone reaction in the ozone treatment unit 8A is supplied to the biological treatment unit
B and aerobic processed. Thereafter, the water is sent from the lower part of the biological treatment part 8B to the ozone treatment part 8A again by the pump, and the above-described steps are repeated. In the present invention, in the above-mentioned ozone biological reaction tank 7, oxidation by ozone,
By effectively utilizing the characteristics of the aerobic bacteria and the decomposition treatment, it has become possible to reduce the residue and to use microorganisms more efficiently.

The treated water circulated for a certain period in the ozone biological reaction tank 7 is sent to the aeration tank 10. Examples of the aeration tank used in the present invention, a contact type aeration tank, a step type aeration tank,
And the aeration tank etc. which combined both are mentioned. The selection of which type of aeration tank to use is made based on the scale of the processing system and the concentration of the processed material. The aeration treatment is performed in order to reduce the BOD value efficiently by creating a state where there is a large amount of oxygen and a state where there is no oxygen in the process of nitrification of the ammonium nitrogen by microorganisms in the wastewater treatment. Therefore, the blower pump 9 has a role of always sending fresh air into the aeration tank 10 into the aeration tank.

In the step type aeration tank, raw water is divided and flows into the subdivided aeration tank. In this method, two or more tanks having an appropriate volume are provided in stages so that microorganisms in the aeration tank are efficiently decomposed. In this step-type aeration tank, aeration may be performed by repeating aerobic / anaerobic by microorganisms attached to and propagated on the cedar chip material. The volume of the treated water flowing into each tank in the step type aeration tank is different. Here, an outline of the processing steps in the step type aeration tank is shown in FIG. In FIG. 12, the number of tanks is three, but is not intended to be limited to three as described above. It is assumed that the volume of treated water sent from the ozone treatment tank to the step-type aeration tank is 200. As shown in FIG. 12, treated water having volumes of 100, 70, and 30, respectively, flows into each of the tanks A, B, and C in the step-type aeration tank. The amount of microorganisms present in each treatment tank depends on the BOD and COD that can be treated.
You decide the amount of. Thus, by changing the amount of treated water flowing into each tank in a stepwise manner, the treatment capacity of microorganisms could be increased. The time during which the processing liquid is retained in the step type aeration tank is the same as the processing period performed in the ozone biological reaction tank 7, and is 24 hours in the case of the above example. In such a process, the treated water whose BOD and COD have been reduced is sent to the sedimentation tank 11. If the treatment cannot be carried out sufficiently in the step type aeration tank, it is returned to the ozone treatment section 8A of the ozone biological reaction tank 7 again and treated in the same manner.

FIG. 13 schematically shows a contact type aeration tank 120. FIG. 14 shows a schematic diagram of the configuration of the cedar chip material 121 shown here. As shown in FIG. 14, on the surface of the cedar chip material 121, anaerobic microorganisms (anaerobic bacteria) are layer 12
2 and aerobic microorganisms (aerobic bacteria)
Forms a layer 123 and is in contact with the liquid in the aquarium. FIG.
Microorganisms attached and propagated on the cedar chip material as in 3 are placed in the contact aeration tank 120. In addition, the contact type aeration tank 12
In 0, aeration is constantly performed from the lower part to keep the inside of the tank under aerobic conditions. The aerobic microorganism layer 123 attached and propagated on the cedar chip material absorbs oxygen and discharges water. On the other hand, the anaerobic microorganism layer 122
It absorbs nutrients such as D, COD, N and P, emits carbon dioxide, hydrogen, sulfur and nitrogen into the air, and ammonia, nitrogen oxides (NO ₂ , NO ₃ ) and other metabolites in the water Release. By performing the treatment in the contact type aeration layer using such aerobic bacteria, there is an advantage that the odor generated during the anaerobic treatment can be suppressed, and the site area can be reduced as compared with the anaerobic treatment.

The treated water coming out of the step type aeration tank, the contact type aeration tank, or the aeration tank using both of them is supplied to the settling tank 1
1 (if not sufficiently processed in the aeration tank, it is returned to the ozone processing unit 8A of the ozone biological reaction tank 7 again and processed in the same manner). Here, mainly, substances having a high specific gravity in the wastewater are removed by microbial treatment using cedar chips. The treated water (supernatant) subjected to the precipitation treatment is sent to the contact oxidation tank 12 or used as dilution water for the raw water tank 1. The treated water sent to the contact oxidation tank 12 almost completely removes the SS having a small specific gravity that could not be removed in the precipitation tank 11. Contact oxidation tank 12
In order to perform treatment with aerobic bacteria and anaerobic bacteria,
Fresh air is always carried into the tank by the blower pump 9. The sediment accumulated in the lower part of one sedimentation tank 11 is sent to the solid-liquid separation device 6 as surplus sludge, and is treated again according to the flow.

From the contact oxidation tank 12, the treated water is sent to a sterilization / decolorization tank 13. The water filtered here is finally sterilized by ozone and discharged as water meeting drainage standards, or sent to a raw water tank as dilution water in the system and reused.

The above step type aeration tank, contact type aeration tank,
In each of the contact oxidation tanks 12, the treated water is decomposed by microorganisms attached to and propagated on the cedar chip material. Here, cedar chips are used, but not limited to cedar.
If it is softwood, it can be used as chip material (or
Tip material may not be used). There are three types of softwood chip materials used in the present invention. (1) Fine powder having a size of about 3-10 mm (2) Three-sided cleaning, three-sided compressed granules, and a size of 10-
20 mm (3) A five-sided rod-shaped one with 5 sides washed and compressed on 5 sides, with a short diameter of the cross section of 3 mm or more and a length of 10 mm or more. FIG. 15 shows an example of the shape of the rod-shaped chip material 130 of (3). The cross-sectional shape of the bar-shaped chip material in FIG. 15 is square, but is not limited to this shape, and may be circular, triangular, rectangular, pentagonal, or any other irregular shape. There may be. In the case of these shapes, the short diameter of the cross section may be 3 mm or more. (1) to (3) above
Of the treatment plants and the type of treated water are selected and used. As the installation form in the bioprocessing tank,
The coniferous chip material is directly put in the above-mentioned (1) to (3), or the mat is assembled along the wall of the aquarium.

In the present invention, the purpose of using coniferous chip material is to propagate microorganisms. In a conventional composting device, sawdust is put into the device, bacteria for forcibly decomposing are injected into the composting device, and a substance to be decomposed is put into the device to decompose. After decomposition, the sawdust was treated as fertilizer with the decomposition product, and was hardly reused. However, in the present invention, the role of the coniferous chip material is limited only to the propagation of microorganisms, so that long-term use is possible without discarding. When using softwood chips, it is necessary to select one that does not use chemicals such as preservatives and insect repellents. Chemicals such as preservatives and insect repellents
This is because it becomes a factor inhibiting the propagation of microorganisms. Timber with a black heart is not used because it is not suitable for microbial propagation. Conifers growing in cold climates are suitable for chippings. Conifers grown in cold regions have a slower growth rate than those grown in warm regions, but have a higher density and a shape that facilitates the propagation of microorganisms. In addition, softwood chip materials are not easily digested by microorganisms, and have a large specific surface area (about 30 m ² / g) and a porosity (7).
5-85%), water retention (around 63%), heat retention,
It has important effects such as oxygen supply. Such conifers are durable and can be used for 5-10 years or more in each treatment tank, and microorganisms can ferment organic substances → decompose →
It has the ability to create the most effective conditions for digestion.

The main microorganisms that adhere to and propagate on the above cedar chip materials are Bacillus and Pseudomo.
genus nas, Zoogloea, Alcaligene
genus s, Flavobacterium, Acinet
obobacter genus, Nitrobactor genus and the like. These microorganisms produce an enormous number of bacterial colonies in cedar chipwood. The bacterium is composed of bacilli and cocci, and these bacilli and cocci perform a specific decomposing action under the condition that the water content is about 63%. Bacilli are responsible for the fermentation and decomposition (corrosion) of animals and plants, and cocci are exhausted from the corrosives and bacilli to gasify. As described above, the organic matter in the sewage that has been subjected to ozonation treatment is treated by the mechanisms in the biological treatment section, contact oxidation tank, and biotreatment tank in the ozone biological reaction tank. can do.

In the above-described treatment with ozone water or ozone gas, it is necessary to treat ozone remaining in the ozonized water and ozone (unreacted ozone) remaining in the gas as surplus ozone not used for the reaction. At present, there is no regulated value for the concentration of exhaust ozone, but applying environmental standards mutatis mutandis,
It is to be treated to 0.06 ppm or less. Since the residual ozone in water decomposes quickly, the residence time is set to be relatively long (several minutes), so that it is not necessary to take special countermeasures against residual ozone by natural decomposition. on the other hand,
The treatment of exhausted ozone (unreacted ozone) remaining in the gas as surplus ozone without being used in the reaction must be performed. This is because, if the exhaust ozone treatment is not performed, an ozone smell drifts in the vicinity, oxidizes and rusts electric devices and the like in the vicinity, and may adversely affect the human body. The waste ozone treatment includes an activated carbon method, a catalytic method, a combustion method, a chemical cleaning method, and the like. In actual exhaust ozone treatment, an activated carbon method, a catalyst method, and a combination method of both are generally used. In the activated carbon method, the activated ozone decomposition tower is filled with activated carbon to decompose ozone within a contact time of less than 1 second. Can be released. Depending on the type of activated carbon used, such as density and surface area, activated carbon is generally 3-4
They must be replaced every month. This method is effective for a relatively small processing system. On the other hand, in the catalytic method, a catalytic agent such as manganese or nickel is mainly used, and the ozone is completely reduced to oxygen by setting the temperature of the catalyst tank to 40 ° C. or more and the contact time to about 15 seconds. The combined use of both is used in a large-scale treatment system. First, in the catalytic method, the contact time between the ozone and the catalyst is increased, the load is reduced by removing 98-99%, and then the activated carbon treatment is performed. . This makes it possible to provide a system that combines the advantages of both, such as extending the life of activated carbon. In the system according to the present invention, an ozone killer of an activated carbon type was attached to the roof of the primary reaction tank 5 and the ozone treatment section 10A to perform ozone treatment.

[0039]

Example 1 Types of Shochu Lees (Wheat Shochu Lees) The above samples were divided into two days. Sample 500kg
Is ground in a grinding tank (30 minutes), diluted with 2 tons of water in a mixing and reaction tank, and then circulated with ozone (3.
0 minutes). The SS (31 liters) is removed from the sedimentation tank, and the purifier is operated while transferring the remaining liquid to the balance tank. Drainage was carried out at a ratio of effluent 4 to return water 6. Sample (wheat shochu lees): Date of collection December 20, 1997
Sun (Sat) 13: 30-15: 00 Collection 1 Undiluted solution Collection 2 After completion of oxidation reaction in circulation system Collection 3 Precipitation tank Collection 4 Discharged water (final treated water) Inspection method: Kagoshima Prefectural Industrial Technology Center and Kagoshima Foundation Requested from the Prefectural Environmental Technology Association. result:

-1: undiluted solution

[Table 1]

-2: 30 minutes after the reaction tank

[Table 2]

-3: settling tank

[Table 3]

-4: discharge water

[Table 4]

[0044]

Example 2 The effluent obtained in Example 1 was brought to the Kagoshima Prefectural Institute of Environmental Technology, and water for measurement was collected in a submerged tank (reaction tank) and the final effluent.

[0045]

[Table 5]

In the above description, the chemical treatment of shochu lees was described. However, the water treatment can be applied to deodorization, decolorization, THM reduction and trace organic substance removal of advanced water purification treatment, and deodorization, decolorization, sterilization of advanced sewage treatment. It can be applied to COD removal, can be applied to deodorization, decolorization, and sterilization of advanced human waste treatment, can be applied to COD removal, decolorization, cyanide removal, and phenol removal of factory wastewater treatment, and can be used for water purification, decolorization, and deodorization of seawater desalination treatment. Applicable to pool water treatment, decolorization, deodorization, sterilization. The gas treatment can be applied to deodorization odor treatment (sewage odor, human urine odor), smoke removal treatment for denitration, and treatment in a storage for sterilization. Further, it is applicable to prevention of slime adhesion in pipes, oxidation and bleaching of chemicals.

[0047]

As described above, according to the waste chemical and biological treatment system of the present invention, the solid content in the organic waste liquid is aggregated by the oxidation reaction with ozone, so that the filtration and / or the solid-liquid separation can be easily performed. And it can be done in a short time. Maintenance is easy, and the separated solid can be used as a raw material for a composting device or a high-speed mineralization device. In addition, the ozone treatment section in the ozone biological reaction tank decomposes COD, BOD, and SS in the treated water by ozone treatment of the treated water, and treats the microorganisms in the biological treatment section with the treatment efficiency of microorganisms mainly composed of aerobic bacteria. Can be increased. In biological treatment, it is possible to perform treatment with less residue by decomposing using a microorganism group mainly composed of aerobic bacteria propagated on a durable softwood chip material. Also, ozone used in the waste chemical and biological treatment system of the present invention exists in nature, and excess ozone returns to oxygen, so there is no danger of secondary pollution.
Clean without harming the environment. Also, when comparing the running cost with the conventional method, both the incineration type treatment method and the methane fermentation activated sludge treatment method cost about 2,000 to 6,000 yen per ton of the treated amount, whereas the present invention provides a treated amount of 1 ton. It was less than 2000 yen per hit.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a chemical structure of ozone.

FIG. 2 is a view showing a decomposition process of ozone in water.

FIG. 3 is a diagram showing a flow of an embodiment of the waste chemical and biological treatment system of the present invention.

FIG. 4 is a diagram showing a structure of an ozone generator using a silent discharge method.

FIG. 5 is a diagram showing a mechanism of an ozonizer.

FIG. 6 is a perspective view schematically showing an ozone supply device disclosed in Japanese Patent Application No. 62-33149.

FIG. 7 is a schematic side view including a partial cross section of a magnetic processing unit of the ozone supply device of Japanese Patent Application No. 62-33149.

FIG. 8 is a schematic side view of a secondary mixing section of an ozone supply device disclosed in Japanese Patent Application No. 62-33149.

FIG. 9 is a view schematically showing a counter-flow ozone supply device used in the present invention.

FIG. 10 is a sectional view of a mixing pump used in the present invention.

11A and 11B are schematic diagrams showing the configuration of an ozone gas phase reaction tower according to the present invention, wherein FIG. 11A is a schematic front view, FIG. 11B is an enlarged view of a scatter tube, and FIG. 2 shows a view from the direction of X. FIG.

FIG. 12 is a schematic diagram showing a configuration of an embodiment of the step type aeration tank of the present invention.

FIG. 13 is a diagram schematically showing a contact-type aeration tank in which a cedar chip material on which microorganisms are attached and propagated is installed.

FIG. 14 is a schematic diagram showing a structure of a chip material which is installed in a contact type aeration tank and to which microorganisms are attached and propagated.

FIG. 15 is a schematic diagram showing an example of a softwood bar-shaped chip material used in the present invention.

[Description of Signs] 1 Raw water tank 2 Primary reaction tank 3 Ozone killer 4 Ozone agglutination tank 5 Stirrer 6 Solid-liquid separator 7 Ozone biological reaction tank 8A Ozone treatment unit 8B Biological treatment unit 9 Blower pump 10 Aeration tank 11 Precipitation tank REFERENCE SIGNS LIST 12 Contact oxidation tank 13 Sterilization / decolorization tank 14 Ozone generator 15 Composting device or high-speed mineralizer 16 Ozone gas phase reaction tower 18 Dielectric 19 Electrode 30 Air supply and drying device 31 Air concentrator 32 Ozone generator 33 Power supply control Apparatus 34 Cooling device 50 Main pipe 51 Split pipe 52 Control box 53 Frame 54 Flange section 55 Water flow pipe 56 Magnetic processing section 57 Secondary mixing section 58 Flange section 59 Main water flow 60 Bar-shaped magnet 61 Split flow 62 Internal pipe 63 Primary mixing section 64 Mixed main water flow 65 Ozone-injected split flow 67 Resistance rod 80 Main pipe 81 Branch pipe 82 Water flow Pipe 83 Branch pipe 84 Main water stream 85 Branch stream 86 Suction pump 87 Ejector 88 Branch pipe outlet 89 Branch stream into which ozone gas is injected 90 Ozone gas injection port 91 Suction port 92 Discharge port 93 Shear propeller 94 Fixed blade 95 Impeller 96 Shaft 101 Scattering pipe 102 Discharge port 103 Ozone monitor 104 Ozone controller 105 Tube 110 Spray port 120 Contact type aeration tank 121 Chip material 122 Anaerobic microorganism layer 123 Aerobic microorganism layer 130 Rod-shaped chip

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B09B 3/00 304Z

Claims (17)

[Claims] 1. A means for supplying raw water from a raw water tank, an ozone generator for supplying ozone, a means for gas-liquid mixing the raw water and the ozone, and a solid content in the gas-liquid mixed raw water. A waste chemical and biological treatment system comprising: means for aggregating raw water; and means for solid-liquid separation of the raw water agglomerated with the solid content. 2. A means for supplying mist or raw water from a raw water tank, an ozone generator for supplying ozone, a means for contact-mixing said mist or raw water and said ozone, A waste chemical and biological treatment system comprising: means for aggregating solids in contact-mixed raw water; and means for solid-liquid separation of the raw water agglomerated with the solids. 3. A waste chemical and biological treatment system having an ozone biological reaction tank, wherein the ozone biological reaction tank performs an ozone treatment section for gas-liquid mixing treated water and ozone supplied from an ozone generator. A biological treatment section for aerating the gas-liquid mixed treated water. 4. The disposal according to claim 3, further comprising means for supplying treated water from said biological treatment section to said ozone treatment section such that treated water circulates between said ozone treatment section and said biological treatment section. Material chemical biological treatment system. 5. A means for supplying raw water from a raw water tank, an ozone generator for supplying ozone, a means for gas-liquid mixing said raw water and said ozone, and a solid content in said gas-liquid mixed raw water. A means for coagulating the raw water, and a means for solid-liquid separation of the raw water in which the solid content is aggregated, and further, an ozone treatment unit for performing ozone treatment on the treated water as the solid-liquid separated raw water,
A biological treatment unit provided with aeration means for biologically treating the ozonized treated water, a means for supplying the treated water from the biological treatment unit to the ozone treatment unit, and the treated water is an ozone treatment unit and Means for circulating between the biological treatment section and the biological treatment section. 6. A means for supplying mist or raw water from a raw water tank, an ozone generator for supplying ozone, a means for contact-mixing said mist or raw water and said ozone, A means for aggregating the solid content of the contact-mixed raw water, and a means for solid-liquid separation of the raw water agglomerated with the solid content are further provided, and the treated water as the solid-liquid separated raw water is treated with ozone. An ozone treatment unit, a biological treatment unit provided with aeration means for biologically treating the ozonized treated water, a unit for supplying the treated water from the biological treatment unit to the ozone treatment unit, and the treated water A waste chemical and biological treatment system, comprising: means for circulating between an ozone treatment unit and the biological treatment unit. 7. The method according to claim 1, wherein said raw water is organic waste.
The waste chemical and biological treatment system according to any one of 2, 5, or 6. 8. The waste chemical and biological treatment system according to claim 1, wherein the raw water is an organic waste pulverized to a fine substance in units of 10 μm. 9. The waste chemical and biological treatment system according to claim 7, wherein said raw water is diluted with water. 10. A waste chemical and biological treatment system having a contact oxidation tank, wherein ozone supplied from an ozone generator and treated water sent from the contact oxidation tank are mixed to sterilize, decolorize, and deodorize. A system comprising means for performing: 11. A means for mixing ozone supplied from an ozone generator and treated water sent from said contact oxidation tank to sterilize, decolorize and deodorize said treated water and to use said treated water as dilution water. The waste chemical and biological treatment system according to claim 9, further comprising means for supplying water to the raw water tank. 12. A waste chemical and biological treatment system provided with an aeration tank and / or a contact oxidation tank, wherein the powder has a size of 3 to 10 mm, a size of 10 to 20 mm, or a minor axis of a cross section of 3 mm or more. And a rod-shaped coniferous chip material having a length of 10 mm or more, or a microbial culture substrate in an assembled state is provided in the aeration tank and / or the contact oxidation tank. 13. A microorganism culturing substrate using softwood as a chip material. 14. The chip material has a size of 3 to 10 mm, a size of 10 to 20 mm, or a cross section having a minor axis of 3 mm.
The microorganism culture substrate according to claim 13, which is at least 10 mm and at least 10 mm in length. 15. An apparatus for supplying mist or raw water from a raw water tank, an ozone generator for supplying ozone, and means for contact-mixing the mist or raw water with the ozone. Ozone gas phase reactor. 16. A method for causing organic waste to act on gaseous ozone gas. 17. The method according to claim 16, wherein the organic waste is in a liquid state, and the specific surface area of the organic waste is increased.