JP2003126877A - Water treating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that a solid matter increases when a disposer drainage is flown into a drainage treating equipment which is conventionally available on the market, therefore it is hard to completely treat it, then it is necessary to install the other treating equipment for this kind of drainage system, resulting in increase the cost of installation. SOLUTION: The problem is solved by feeding service water and ozone into a mixer of a hyperfine structure having a spontaneous pressurizing part with a pressure pump for gas and liquid mixture, and decomposing trihalomethane, agricultural chemicals, etc., contained in the service water. As a result, a user can safely drink city water, and it is unnecessary to invest a large sum of money on the countermeasure.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a water treatment system capable of efficiently treating tap water, disposer wastewater, general household wastewater, human waste water, factory wastewater, and the like without generating a foul odor. In particular, the present invention relates to an invention for obtaining a water treatment system in which organic sludge is reduced as much as possible in regard to disposer drainage and the like, which can be installed and the like without requiring large-scale equipment as in the past.

[0002]

2. Description of the Related Art FIGS. 12 and 13 are views showing a purification system conventionally used in a luxury apartment or a general household. The system shown in FIG. 12 is a system in which a water purifier containing activated carbon is attached to the inside of a tank provided on the roof of a building or an outlet, and the system shown in FIG. 13 is a small-sized activated carbon or hollow fiber to a water tap of a general household. It has a built-in water purifier. 12 and 13 are the ones in which foreign substances contained in tap water, such as scaly or disinfectant salt material, are removed by the activated carbon to obtain tap water that is easy to drink. It was not possible to remove the trihalomethane, pesticides, etc., which are the topic of discussion.

Therefore, various methods for removing this trihalomethane from tap water have been studied. A typical method is to apply ozone to separate halogen. However, in the conventionally proposed halogen decomposition (separation) method using ozone, ozone is simply diffused into tap water, so contact between ozone and tap water does not work in a single time, and large equipment must be prepared. The effect of the above separation could not be expected. For this reason, if one tries to do this in a place where land prices are very high, such as a condominium in a city, the equipment cost and the investment amount are high, and it is not possible to realize it.

Regarding disposer drainage, when a commercially available disposer is installed in a general household, the particle size (mm) of raw garbage is 1.0% or less, 55%, and 4 or more.
Since the solid content in the waste water was 5%, which was too large, it was difficult to process (decompose into carbon dioxide and water). Therefore, it was not possible to treat the disposer wastewater in the existing treatment tank in the same way as general sewage due to problems such as time constraints. Therefore, when the disposer is installed, it is necessary to install a dedicated processing tank in addition to the above processing tank. If the disposer wastewater treatment becomes possible, the garbage collection and transportation business conducted by the local government will be a big saving as the garbage will be lost. Of course, even in ordinary households, the garbage will be transported to the collection place. However, it is known that there will be a lot of merits because it will eliminate environmental pollution such as odors, but in urban areas, it will be quite popular due to the above-mentioned expensive installation location and the need for large investment. There wasn't.

Next, the treatment of domestic gray water will be described with reference to FIG. In the figure, 101 is a treatment tank of a wastewater treatment device, 102 is an inlet, 103 is an outlet, 104, 1
Reference numeral 05 denotes a partition wall, 106, 107 and 108 are processing chambers, and the processing chambers 106, 107 and 108 are provided with nozzles 109, 110 and 111 for ejecting ozone and air. 112 is a box-shaped screen made of stainless steel wire mesh, 113 is a microbial maintenance vessel, 114 is an oxidation-reduction potential sensor for detecting the oxidation-reduction potential of treated water, 115 is a treatment chamber, and 125 is water at the bottom of the outlet 103. Guide tube to guide. The nozzles 109, 110 and 111 have conduits 11
6, 117, 118 via ozonizers 119, 12
0 and 121 are connected. Ozonizer 119, 12
Reference numerals 0 and 121 respectively include an ozone generating element having electrodes formed on a dielectric and an adjuster 122 for adjusting the voltage or frequency for applying a high frequency AC voltage to the element to adjust the ozone generation amount. This adjuster 122
(Controller) generates ozone of 0.05 ppm to 1
Adjust within the ozone concentration range of 70 ppm. A pump 124 is connected to the ozonizers 119, 120 and 121 via a pipe 123. The pump 124, the conduit 123, the conduits 116, 117 and 118, and the nozzle 10.
Reference numerals 9, 110 and 111 constitute ozone ejection means. The power supplies of the ozonizers 119, 120, 121 and the pump 124 are connected to the AC power supply via the switches 119a, 120a, 121a and the pump switch 124a, respectively.

The wastewater treatment equipment having such a structure works as follows and treats domestic gray water. That is, the processing layer 1
After opening the lid 126 of 01 and putting a predetermined amount of pre-cultured microorganisms in the microorganism maintenance device 113, switches 119a-1
21a is turned on to activate the ozonizers 119 to 121, and the switch 124a is turned on to drive the pump 124. By doing so, domestic gray water that has flowed into the processing tank 101 through the inlet 102 or the processing chambers 106, 107, 10
In step 8, ozone and microorganisms decompose it into carbon dioxide and water, and the water is discharged from the outlet 103 to a river or the like. This kind of processing tank is proposed in Japanese Patent No. 1872373.

[0007]

In the above-mentioned conventional processing apparatus, the following points have not been taken into consideration. 1. An effective means for decomposing trihalomethane, a carcinogen contained in tap water (tap water), by using ozone has not been proposed or suggested.

2. The inclusion of disposer wastewater in general wastewater is not considered. That is, the septic tank for general households was designed for a BOD concentration of about 200 mg / L, whereas the disposer drainage is 1300 to 550.
It should be able to process 0 mg / L and 6 to 22 times the concentration. For this reason, in the conventional disposer drainage, it is obligatory to install a dedicated large-scale primary treatment tank before the treatment tank. However, this primary treatment tank, which is not shown in the figure, only aerates air and ozone into the tank, so that it was necessary to send a large amount of air and ozone with a high concentration. Therefore, there is a problem that the maintenance cost is high and that the treatment of surplus ozone is difficult.
Further, since a large dedicated primary treatment tank for exclusive use must be separately provided in front of the treatment tank, there are problems such as not only the investment cost but also the installation area and maintenance management become troublesome.

3. Due to the structure in which ozone generated in the ozonizer is aerated in the processing chamber, the diffuser part is clogged, and as shown in FIG. 11, it has to be replaced in about three years. In addition, performance deterioration such as ozone application efficiency is natural in the process up to these three years. 4. The idea of popularizing disposers and eliminating the garbage from the entire condominium to create a comfortable living environment, for example, was not suggested anywhere.

[0010]

Means for Solving the Problems The present invention has been made to solve the above problems. That is, tap water and ozone are sent to a mixer having an ultra-fine structure having an instantaneous pressurizing section with a gas-liquid mixing pressure pump, and trihalomethane contained in the tap water is decomposed with pressurized ozone. Since this is a system that does not increase the size of the equipment itself, the system can be adopted even in urban areas. Also, by adopting this system, household water purifiers can be abolished. Further, in the present invention, the activated surplus sludge in the treatment tank for treating the wastewater of the disposer and the like is sent together with ozone to a mixer having an ultra-fine structure having a momentary pressurizing section by a pressure pump for gas-liquid mixing, to carry out the above-mentioned activity. Since the excess sludge is decomposed into carbon dioxide and water by the pressurized ozone, sludge is likely to accumulate like disposer drainage and a large amount of cost is required for pumping, resulting in a large cost. Of course, the equipment cost can be reduced, the installation area can be small, and there is no need for pumping. Therefore, various effects can be obtained.

Further, the activated sludge in the treatment tank for treating the wastewater of the disposer is sent together with oxygen and ozone to a mixer having an ultra-fine structure having an instantaneous pressurizing section by a gas-liquid mixing pressure pump,
The activated excess sludge is decomposed into carbon dioxide and water by the pressurized ozone, and the returned sludge is adapted to promote biological oxidation by pressurized oxygen. Compared to the one that required a large amount of money to collect the accumulated sludge in a tank, the cost can be reduced significantly, and the equipment cost is low and the equipment can be small. In addition, since oxygen is similarly pressurized and applied, biooxidation is accelerated, and the amount of sludge can be further reduced.

Further, the activated sludge is sent together with oxygen or ozone to a mixer having an ultra-fine structure having an instantaneous pressurizing section by a gas-liquid mixing pressure pump, and the activated excess sludge is converted into carbon dioxide and water by the pressurized ozone. Since the mechanism for decomposing and biologically oxidizing the returned sludge with pressurized oxygen is installed in the treatment tank that has the reaction chamber, the sedimentation chamber and the activated excess sludge storage chamber, the performance of the existing water treatment equipment should be further improved. Of course, it is possible to obtain a treatment system that does not generate sludge.

The pressure applied in the mixer having an ultrafine structure is 0.5 kg / cm ² or more, and the instantaneous pressurizing time is 0.01
The time is very short (~ 0.1 seconds), and the water treatment can be done without the occurrence of ozone accidents. Therefore, the safety (pressure of ozone, concentration of ozone, amount of existing ozone), etc. The water treatment system can be obtained without any problem.

Further, the treatment tank is composed of a reaction chamber, a sedimentation chamber and an activated sludge storage chamber, and activated surplus sludge is pumped out of the storage tank into a circulation path to treat disposer wastewater, human waste drainage sewage, factory wastewater, etc. Therefore, the activated excess sludge can be surely decomposed into carbon dioxide and water during the circulation of the activated excess sludge to eliminate the activated excess sludge.

[0015]

Embodiments of the water treatment system according to the present invention will be described in detail below with reference to the drawings. First, in FIG. 1, 1 is a water treatment system, and this water treatment system main body 1 is composed of a reaction tank 2, a reaction tank 3, a precipitation tank 4, an activated sludge storage tank 5, and the like. Reference numerals 6, 7, and 8 are separators that partition the chambers. Reference numerals 9 and 10 denote screens provided on the separators 6 and 7. The solid matter between the tanks is caught by the screens 9 and 10, and the waste water and fine garbage are transferred to the adjacent tank. In the activated sludge storage tank 5, return sludge and activated surplus sludge are mixed.

Reference numeral 11 is an inlet for introducing disposer wastewater, general household wastewater, human waste, etc. to the water treatment system. 1
Reference numeral 2 is an outlet for flowing the intermediate water purified by the water treatment system into the river. 13 is a screen provided in the middle of the inflow port 11, 14 is a microorganism maintenance device, and 15 is an oxygen reduction potential sensor for detecting the oxygen reduction potential of the treated water. 16, 17
Is an agitator for agitating the sludge in the tanks to agitate the sludges in the reaction tanks 2 and 3 so that the oxygen and the sludge are mixed to accelerate the decomposition. 18
Is an oxygen ozone cycle generator, 19 is a gas-liquid mixing pressure pump, 20 is an ultra-fine structure mixer having an instantaneous pressurizing section, and is a micro-structure mixer having this gas-liquid mixing pressure pump 19 and an instantaneous pressurizing section. 20 is provided in the middle of a circulation path 21 for circulating activated sludge. 22 is the previous circulation path 21
A switching valve provided in the middle of the passage, the switching valve 22 having a passage 2 for returning the activated sludge flowing in the circulation passage 21 to the previous reaction tanks 2 and 3.
3, 24 are provided.

Next, details of the above-mentioned microorganism maintenance device 14 will be described. The microorganisms (aerobic bacteria) in the microorganism maintenance device 14 maintain the viable amount of aerobic bacteria in the reaction tanks 2 and 3. Then, the microorganisms perform a starch decomposing action, a sugar decomposing action, a fatty acid decomposing action, a protein decomposing action, a lignin decomposing action, a nitrifying action, a sulfating action, and a fibrinolytic action. And this microorganism is a bacterium,
It is selected from the group of rhizobia, yeast, nitrifying bacteria and filamentous fungi. In addition, a plurality of types of the above-mentioned bacteria may be mixed at a predetermined ratio. Incidentally, this bacterium is a complex bacterium which can act in a temperature range of 4 to 80 ° C.

Next, the purification of the activated surplus sludge in the activated sludge storage tank 5 will be described with reference to FIG. 5 in FIG.
Is an activated sludge storage tank, and 21 is a circulation path for circulating the activated surplus sludge in the activated sludge storage tank 5 and returning it to the activated sludge storage tank 5 again. 19 is a gas-liquid mixing pressure pump, 20
Is a mixer of ultra-fine structure for instantaneous pressurization, 18 is a circulation path 2
An oxygen-ozone cycle generator that supplies oxygen and ozone to 1. Here, the gas-liquid mixing pressure pump 19 will be described first. The pump 19 is a pump that transfers activated sludge and a gas such as oxygen or ozone without causing gas lock or air lock, and is a type of pump that reciprocates while the rotor rotates. An example of this pump is a mono pump commercially available from Hyōjin Kikai Co., Ltd.
The gas-liquid mixing pump 19 sucks the activated sludge and oxygen, oxygen or ozone generated in the ozone cycle generator 18 from the activated sludge storage tank 5 into the circulation path 21 and sends the activated sludge to the mixer 20 having an ultrafine structure for instantaneous pressurization. Since the pump 19 is a rotor type pump as described above, it is a pump that can send even if the ratio of gas (oxygen or ozone) and liquid (sludge) is half.

Next, the mixer 20 having an ultrafine structure will be described. In the mixer 20 having the ultra-fine structure, as shown in FIG. 2, the A fluid and the B fluid flow into the reaction section 27 and are converted into a spiral flow by the spiral flow path 28. The intense centrifugal force at this time occurs. As a result, the heavy substance gathers to the outside and the light substance gathers to the inside, and both the outer heavy fluid layer and the inner light fluid layer become ultrafine particle groups by the needle-shaped collision body 29. At this time, this ultrafine structure The mixer 20 is configured so that a pressure of 0.5 kg / cm ² or more is generated due to internal resistance, and the fluid flowing in the mixer 20 is 0.04 seconds in terms of time. A microfluidic microparticle group and a light fluid microparticle group continuously violently collide and react with each other, and this type of mixer is manufactured by Seika Sangyo Co., Ltd.
That is the HR line mixer. This mixer is capable of producing ultrafine particles having a particle diameter of 0.5 to 3 microns in a moment (0.04 seconds).

In the mixer 20 having this ultrafine structure, the finely divided oxygen and ozone come into contact with sludge under pressure. However, when ozone is injected, the activated excess sludge is decomposed into carbon dioxide and water, and when it is oxygen, it accelerates the biological oxidation of the returned sludge. It should be noted that this ultrafine structure mixer 20 should be installed relatively close to the oxygen / ozone cycle generator 18. Because ozone has a strong activity, it should be used within 10 seconds after its generation. This is because it is the most efficient. Next, returning to FIG. 1, the oxygen ozone cycle generator 18 will be described. This oxygen ozone cycle generator 18 generates ozone by generating ozone-generating elements having electrodes formed on a dielectric, a high-frequency high-voltage power supply for applying a high-frequency AC voltage to these elements, and adjusting the voltage or frequency of this power supply. In addition to having a regulator for adjusting the amount, it has an oxygen generator. The ozone or oxygen can be supplied to the circulation path 21 when necessary according to the life cycle.

The function of ozone at this time is as follows.
That is, the oxidative effect of ozone and the oil dispersion effect decompose the oil in the wastewater to eliminate the bad odor. For example, ozone decomposes n-hexane into water and carbon dioxide. In the water treatment system having such a configuration, the active excess sludge in the tank 5 is sucked together with oxygen or ozone by the gas-liquid mixing pump 19 and sent to the mixer 20 having an ultra-fine structure having an instantaneous pressurizing unit. Be done. In a moment, the sludge and ozone are converted into ultrafine sludge and gas having a particle diameter of 0.5 to 3 microns. At the same time, the sludge reacts with the above oxygen or ozone (ultrafine particles) in a pressurized state, is decomposed into bio-oxidative reduction when oxygen, and carbon dioxide and water when ozone, and returns to the activated sludge tank 5, respectively. By repeating this, the organic substances in the tank 5 disappear.

The oxygen / ozone cycle generator 18 shown in FIG. 3 can switch the timing of generation of the oxygen / ozone according to the life pattern of the user. Needless to say, the reason why such switching is possible is that both oxygen and ozone are instantly reacted with sludge. For example, oxygen is generated when the amount of raw garbage is relatively small, such as when preparing breakfast, and ozone is generated when a large amount of raw garbage is generated, such as when preparing dinner, to eliminate the odor. Oxygen along with sludge into a mixer of ultra-fine structure having an instantaneous pressurizing section via the above gas-liquid mixing pressure pump,
When ozone is supplied, the performance shown in Table 1 is different from that obtained by simply aerating air into sludge, and of course, stable performance is always obtained as shown in FIG. is there. In Table 1, the oxygen aerated has a dissolved oxygen concentration of 6 to 10 times that of the air aerated, and the biological oxidation is further improved. Further, when compared by odor, it is understood that oxygen aeration has almost no odor, whereas air aeration leaves a odor, so that oxygen supply is several times more efficient than air supply.

[Table 1]

On the other hand, the difference between applying pressure to sludge and not applying pressure to the sludge using the mixer of the present invention having an ultra-fine structure having an instantaneous pressurizing section is as shown in FIG. That is, oxygen concentration 90
In terms of%, it is 38 mg / L in the unpressurized state, whereas it is 43.8 mg / L in the pressurized state, and a concentration of about 1.2 times can be secured. From this, it can be seen that it is efficient to employ a mixer having an ultra-fine structure having an instantaneous pressurizing section for applying oxygen to sludge or the like in a pressurized state, which contributes to downsizing of equipment.

FIG. 5 shows ozone characteristics of a mixer having an ultra-fine structure having an instantaneous pressurizing section. As described above, according to the present invention, the ozone concentration and the sludge are made into ultrafine particles by the mixer having an ultra-fine structure having an instantaneous pressurizing section, so that when the sewage sludge is 3 Hr, the sludge concentration is much different from the initial state. However, the pressure type can achieve a sludge concentration of 2000 mg / L at 3 Hr, which is about 1/7 of the conventional technique. (It should be noted that, compared to the non-pressurized type, the processed one has a sewage sludge concentration which is reduced to a fraction of a fraction.) Further, the decomposition performance of the finely divided ozone is as shown in Table 2. That is, the ozone of the present invention can have a bubble size which is less than tens of thousands of conventional commercial products, and the pressing force in the mixer of the present invention is 0.5 kg / cm ² or more (number of conventional products). The concentration of ozone is 100 times lower, and the ozone concentration can be reduced to a correspondingly small amount due to the miniaturization and the pressurizing effect, and the ozone is completely dissolved. Therefore, it has no influence on the human body and others.

[Table 2] Further, if it is attempted to obtain the above-mentioned pressing force at a water depth of a tank to be dug underground, it is necessary to dig deeper than 5 m, but the present invention does not do this, but is obtained in a mixer with an ultra-fine structure having an instantaneous pressurizing section. As a result, the facility construction is greatly simplified.

In order to dissolve the vapor phase ozone and oxygen well in water, 1) make the gas particles small. 2) Increase vapor phase ozone or oxygen concentration. 3) Increase vapor phase ozone or oxygen pressure. 4) Lower the liquid temperature. It is well known that etc. are effective. The circulation path 21 of the present invention incorporates 1) and 3). That is, the mixer having an ultra-fine structure having an instantaneous pressurizing unit reduces the gas phase particles and raises the pressure of the gas phase ozone.

Next, an example in which the above-described mixer having an ultra-fine structure having an instantaneous pressurizing section is used in a clean water treatment system will be described with reference to FIGS. 6 and 7. 30 is a water tank installed on the roof of a luxury apartment, and a municipal water supply pipe 31 is connected to the water tank 30. 32 is a water pipe for sending the clean water collected in the clean water tank to each household, 33 is a water conduit pipe to the general household (connected to the faucet) 19 is a gas-liquid mixing pressure pump. 20 is a mixer with an ultra-fine structure having an instantaneous pressurizing section. In the case of the water treatment system having such a structure, the gas-liquid mixing pressure pump 19 can pump the clean water up to the clean water tank (installed on the roof) by its own power, as well as ozone and clean water. Is sent to the mixer 20 having an ultra-fine structure having an instantaneous pressurizing section. Here, ozone and clean water become fine particles as described above. Therefore, ozone reacts with trihalomethane contained in the tap water to decompose halogen from methane. As a result, trihalomethane decomposes and disappears. Even if ozone is left over, ozone does not dissolve in the clean water and the gas of ozone itself does not accumulate in the clean water tank.

In FIG. 7, the water tank 30 shown in FIG. 6 is removed, and a gas-liquid mixing pressure pump 19 and an ultra-fine structure mixer 20 having an instantaneous pressurizing unit are installed in a water supply conduit 31 for directly supplying water to ordinary households. It shows an example of attachment. Of course, ozone is supplied to the gas-liquid mixing pressure pump 19. Also in this case, as in FIG. 6, trihalomethane is decomposed by ozone. Next, an embodiment different from FIG. 1 will be described with reference to FIGS. FIG. 8 is a diagram showing an example in which the activated sludge storage tank of the water treatment system shown in FIG. 1 is eliminated. That is, if this is the case, the water treatment system itself can be made smaller. Moreover, since the one shown in FIG. 9 has the circulation passage 21 of FIG. 1 incorporated in the activated sludge storage tank, the special circulation passage 21
It is not necessary to provide. Further, FIG. 10 shows a different example when the configuration of the water treatment system itself is changed. Even if the structure is slightly changed as described above (FIGS. 8 to 10), the point is that if a gas-liquid mixing pressure pump, a mixer having an ultra-fine structure having an instantaneous pressurizing unit, and an oxygen ozone generator are provided, The effect is sufficiently obtained.

In the case of the water treatment system having the present invention having such a constitution, the disposer wastewater, household wastewater, human waste water, and factory wastewater which have entered the wastewater treatment apparatus through the inflow port 11 are solids firstly the screen 13. And is removed into the reaction tank 2. In this tank 2, due to oxygen aeration return sludge,
Aerobic, microorganisms are activated. The activated microorganisms biodegrade food waste in the wastewater entering the reaction tank, or human waste. Then, the purified wastewater is transferred to the next reaction tank 3. Of course, also at this time, the wire mesh screen 9 prevents large solids from moving. In the reaction tank 3 as well as the reaction tank 2, the wastewater is biooxidized and reduced by the activated microorganisms to purify it, and the purified water is transferred to the settling tank 4 through the screen 10. In the reaction tanks 2 and 3, of course, the function of the redox sensor 15 controls the oxygen generator to create a state in which microorganisms are most likely to act.
The inorganic solids other than the waste water in the settling tank 4 settle in the lower part of the settling tank 4 over time. Then, only the wastewater whose biochemical oxygen demand (BOD), scientific oxygen demand (COD), etc., are below the reference values will be discharged to the river side by the outlet. The inorganic volume accumulated on the lower surface of the settling tank 4 is pumped when it is accumulated.

On the other hand, the activated sludge that has arrived in the settling tank is transferred to the activated sludge storage tank 5 side. The activated sludge that has entered the activated sludge storage tank 5 is a collection of sludge and microorganisms and must be assembled and discarded as it is. However, according to the present invention, the activated surplus sludge is oxidized by using ozone. The sludge is decomposed into carbon and water, and the returned sludge is aerated with pure oxygen to promote bio-oxidation and reduction so that it can be discharged to rivers. That is, in the present invention, the sludge accumulated in the activated sludge storage tank 5 is treated in the circulation path 21. The activated sludge is sucked into the circulation path 21 by the gas-liquid mixing type pressure pump provided in the middle of the circulation path. The sludge and oxygen or ozone sucked by this pump are made into fine particles and come into contact with the sludge under pressure to perform a redox deodorizing action. As a result of this, the previous sludge will be decomposed and flowed to the outlet side, but the undecomposed sludge will be
It is returned to the reaction tank through the passages 23 and 24.
To explain further, the gas-liquid mixing pressure pump 19 and the mixer 20 having an ultra-fine structure provided in the circulation path 21 take in oxygen and oxygen ozone produced by the ozone cycle generator 18 and carry out bio-oxidation reduction of the returned sludge. It promotes the decomposition of surplus sludge with carbon dioxide and water. Of course,
Both the gas-liquid mixing type pressure pump and the mixer having an ultra-fine structure have an internal pressure maintained at about 0.5 kg / cm ² or more. In other words, oxygen and ozone are added to the excess sludge in this pressurized state. As a result, the solubility in sludge is improved, and the redox is further improved. The oxygen / ozone cycle generator can generate oxygen ozone periodically, but can also generate oxygen ozone alone. Therefore, it can be said that only oxygen and only ozone may be sent to the circulation path 21.

[0030]

EFFECTS OF THE INVENTION The present invention provides a drainage device having a drainage inlet and an outlet, a treatment tank having an oxygen ozone generating means, and a microorganism maintaining means for biodegrading sludge in the treatment tank. In the above, a circulation path for pumping the sludge out of the treatment tank is provided, and a gas-liquid mixing pressure pump is provided in the middle of the circulation path. Oxygen is brought into contact with returned sludge, and biological redox is brought into contact with ozone, and excess sludge is brought into contact with ozone to accelerate the decomposition action of carbon dioxide and water, and the disposer is treated as raw wastewater, household wastewater, night soil water, factory wastewater, etc. However, since it does not require the installation of a large-scale primary treatment tank that was conventionally provided, it does not require the incineration of raw garbage and sludge, and can significantly reduce the processing cost and environmental load. Is. Further, it is possible to solve the high cost problem of the activated surplus sludge treatment, which is destined for sewage treatment, and reduce the required installation area.

Further, if an ultrafine mixer having a gas-liquid mixing pressure pump and an instantaneous pressurizing unit for tap water is provided in, for example, the tap water pipe of a condominium, a water purifier or the like conventionally used in ordinary households. As a matter of course, it is possible to reduce the consumption of harmful substances.

[Brief description of drawings]

FIG. 1 is a functional diagram of a wastewater treatment system including the present invention.

FIG. 2 is a view illustrating a mixer having an ultra-fine structure having an instantaneous pressurizing unit used in FIG.

FIG. 3 is a diagram illustrating a circulation path provided in the activated excess sludge portion of FIG.

FIG. 4 is a diagram showing oxygen concentration and dissolved oxygen concentration during pressurization.

FIG. 5 is a diagram showing the sewage sludge concentration when using the ultra-fine structure mixer for instantaneous pressurization of the present invention.

FIG. 6 is a diagram showing an example in which a mixer with an ultra-fine structure for instantaneous pressurization is installed at the entrance of a clean water tank of a condominium or the like.

FIG. 7 is a view showing an embodiment different from FIG. 6 and showing an example in which a mixer having an ultra-fine structure for instantaneous pressurization is installed at the outlet of a tap water tank.

8 is a diagram showing an example in which the activated surplus sludge tank of the wastewater treatment device shown in FIG. 1 is eliminated.

FIG. 9 is a view showing an embodiment different from FIG. 8 and showing an example in which a mixer having an ultra-fine structure for instantaneous pressurization is installed in an activated excess sludge tank.

FIG. 10 is a view showing an example in which a settling tank and an activated surplus sludge tank of the wastewater treatment device shown in FIG. 1 are separated from the above device.

FIG. 11 is a diagram showing a clogging state of a diffuser and an oxygen dissolution efficiency which are conventionally used.

FIG. 12 is a diagram showing a conventional water purification system.

13 is a diagram showing a conventional example different from FIG.

FIG. 14 is a diagram showing a wastewater treatment device for general wastewater that is generally used.

[Explanation of symbols]

1 Water Treatment System 16 Stirrer 2 Reaction Tank 17 Stirrer 3 Reaction Tank 18 Oxygen Ozone Cycle Generator 4 Precipitation Tank 19 Gas-Liquid Mixing Pressure Pump 5 Activated Sludge Storage Tank 20 Mixer 6 with Ultra-Fine Structure with Instantaneous Pressurizer 6 Separator Plate 21 Circulation Path 7 Separation Plate 22 Switching Valve 8 Separation Plate 23 Passage 9 Screen 24 Passage 10 Screen 25 Oxygen Generator 11 Inlet 30 Water Supply Tank 12 Outlet 31 Water Supply Pipe 13 Screen 32 Water Pipe 14 Microorganism Maintainer 33 Water Pipe 15 Oxygen reduction potential sensor

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B09B 3/00 D

Claims (6)

[Claims] 1. Clean water and ozone are sent by a gas-liquid mixing pressure pump to a mixer having an ultra-fine structure having an instantaneous pressurizing section, and trihalomethane and the like contained in the clean water are decomposed by pressurized ozone. A water treatment system characterized in that 2. The activated excess sludge in a treatment tank for treating wastewater of a disposer and the like is sent together with ozone to a mixer having an ultra-fine structure having an instantaneous pressurizing section by a gas-liquid mixing pressure pump, and the activated excess sludge is treated as described above. A water treatment system characterized by being decomposed into carbon dioxide and water by pressurized ozone. 3. An activated sludge in a treatment tank for treating wastewater of a disposer and the like is sent together with oxygen and ozone to a mixer having an ultra-fine structure having a momentary pressurizing section by a gas-liquid mixing pressure pump,
A water treatment system, characterized in that the activated excess sludge is decomposed into carbon dioxide and water by the pressurized ozone, and the returned sludge is accelerated by pressurized oxygen to promote biological oxidation. 4. The activated sludge is sent together with oxygen or ozone to a mixer having an ultra-fine structure having a momentary pressurizing unit by a gas-liquid mixing pressure pump, and the activated excess sludge is converted into carbon dioxide and water by the pressurized ozone. A water treatment system characterized by incorporating a mechanism for decomposing and biologically oxidizing returned sludge with pressurized oxygen into a treatment tank having a reaction chamber, a sedimentation chamber and an activated excess sludge storage chamber. 5. The pressure applied in a mixer having an ultra-fine structure having an instantaneous pressurizing portion is 0.5 kg / cm ² or more, and the instantaneous pressurizing time is 0.01 to 0.1 seconds. The water treatment system according to claim 1.2.3.4. 6. The treatment tank comprises a reaction chamber, a sedimentation chamber, and an activated sludge storage chamber, and a circulation path for pumping active excess sludge from the storage tank is provided to dispose of disposer drainage, human waste drainage, sewage, and factory drainage. The water treatment system according to claim 5, wherein the water treatment system is adapted to treat the above.