JP4482717B1 - Domestic wastewater advanced purification treatment circulation system and domestic wastewater advanced purification treatment circulation method using the same - Google Patents

Abstract

[Problem] To provide a domestic wastewater advanced purification treatment circulation system and a domestic wastewater advanced purification treatment circulation method in which domestic wastewater is highly purified until it is suitable for drinking safely and inexpensively without using chemical agents (flocculating agents). To do.
SOLUTION: From a combined effective microorganism group culture tank 10 for storing and cultivating a combined effective microorganism group, a treated water amount adjusting tank 20 for adjusting a combined effective microorganism group amount flowing into an advanced aeration tank 30, and a treated water amount adjusting tank 20 An advanced aeration tank 30 that adsorbs and decomposes dirt in the wastewater that has flowed in, and a first separation precipitation tank 40 and a second separation precipitation that are arranged in series to separate the wastewater treated in the advanced aeration tank 30 into a solid phase and a liquid phase. Separation is performed in a tank 50, a sludge storage tank 60 that collects and stores sludge precipitated in the first separation and precipitation tank 40 and the second separation and precipitation tank 50, and a second separation and precipitation tank 50 that is the last separation and precipitation tank. This is a domestic wastewater advanced purification treatment circulation system and a domestic wastewater advanced purification treatment circulation method comprising a sterilizer 70 for sterilizing purified water in a liquid phase.
[Selection] Figure 1

Description

  The present invention relates to a domestic wastewater advanced purification treatment circulation system capable of repeatedly purifying and reusing domestic wastewater so that it is suitable for drinking, and then further purifying and reusing it. It relates to the domestic wastewater advanced purification treatment circulation method.

  Conventionally, as an apparatus and method for purifying wastewater using effective microorganisms such as bacteria, an ozone accumulation supply device, an ozone reaction precipitation tank, a filtration device, and an ultraviolet irradiation device have been provided for industrial wastewater and industrial wastewater. A wastewater treatment apparatus and a water treatment method have been proposed (Patent Document 1). In addition, as an apparatus and method for purifying used wastewater, floor drainage, and domestic wastewater from toilet bowls, the active microorganism group should be fully activated by the net structure of effective microorganisms and the far infrared radiation ceramic layer. Has proposed a wastewater treatment reuse device and method that can purify water and reuse the purified water (Patent Document 2).

Japanese Patent Laid-Open No. 9-174093 Japanese Patent Laid-Open No. 9-10784

  However, the wastewater treatment device and the water treatment method proposed in Patent Document 1 are large and expensive because ozone is mainly used for purification of wastewater, and the maintenance of the device is frequently required. There was a problem. In addition, the wastewater treatment reuse device and method proposed in Patent Document 2 is purification of domestic wastewater, but it is limited to the extent that it is purified until it can be reused for toilets or washing, and drinking domestic wastewater. There is a problem that it is not an apparatus or method for highly purifying until it is suitable.

  The problem to be solved by the present invention is that the domestic wastewater is highly purified to be suitable for drinking without using a large-scale ozone accumulation and supply device, and the purified water is reused as domestic water again. It is another object of the present invention to provide a domestic wastewater advanced purification treatment circulation system capable of repeatedly purifying and reusing wastewater according to the present invention, and a domestic wastewater advanced purification treatment circulation method using the same.

The invention according to claim 1 is a compound effective microorganism group culture tank for storing and culturing a complex effective microorganism group consisting of microbial symbiosis mainly composed of lactic acid bacteria, yeast and photosynthetic bacteria, and oil-degrading microorganisms, The combined effective microorganism group in the waste water and the combined effective microorganism group culture tank and the sludge in the sludge storage tank are mixed and aerated to increase the combined effective microorganism group and adjust the amount of combined effective microorganism group flowing into the advanced aeration tank In addition to disposing a contact material in a floating state in the treated water amount adjustment tank and the central part of the tank, a diffuser pipe and a backwash pipe are arranged at an angle of 90 degrees, and air is simultaneously supplied from the diffuser pipe and the backwash pipe. By discharging and aeration, a complex aerobic microbial group that has flowed in from the treated water amount adjustment tank collides with each other to adsorb and decompose dirt in the sewage, and the sewage treated in the advanced aeration tank is solid-phased. And multiple components in series to separate into liquid phase It consists of a settling tank, a sludge storage tank that collects and stores sludge that has settled in a plurality of separate settling tanks, and a sterilizer that sterilizes purified water that is the liquid phase separated in the last settling tank Provide a domestic wastewater advanced purification treatment circulation system.

  Invention of Claim 2 is the composite effective microorganism group culture tank of Claim 1, a treatment water amount adjustment tank, an advanced aeration tank, a plurality of separation and sedimentation tanks arranged in series, a sludge storage tank, and a rearmost separation and precipitation tank Living water characterized in that it comprises a precipitation reservoir that separates organic matter by aeration of purified water, which is a liquid phase separated in step 1, and a sterilizer that sterilizes purified water treated in the precipitation reservoir. Provide a wastewater advanced purification treatment circulation system.

Invention of Claim 3 is the composite effective microorganism group culture tank of Claim 1, a treatment water amount adjustment tank, an advanced aeration tank, a plurality of separation / precipitation tanks arranged in series, a sludge storage tank, and a separation / precipitation tank at the end Separation treatment in the first water storage tank for storing the purified water, which is the liquid phase separated in step 1, the precipitation water tank for separating the organic matter by aeration of the purified water flowing in from the first water storage tank, and the precipitation water storage tank There is provided a domestic wastewater advanced purification treatment circulation system comprising a second water storage tank for storing the purified water and a sterilizer for sterilizing the purified water in the second water storage tank.

Invention of Claim 4 processes domestic wastewater by the domestic wastewater advanced purification treatment circulation system in any one of Claims 1 thru | or 3, and recycles it as domestic water, and the domestic wastewater is further the same claim. A domestic wastewater advanced purification treatment circulation method characterized by being treated and purified by the domestic wastewater advanced purification treatment circulation system according to any one of Items 1 to 3 and repeatedly reused as domestic water.

 The present invention does not use a large-scale apparatus such as an ozone accumulation and supply apparatus, and has an effect that it is extremely inexpensive because a complex effective microorganism group that is generally available is cultured and used. In addition, when separating sewage into a solid phase and a liquid phase, since no chemical agent (flocculant) such as aluminum sulfate is used, there is an effect that the domestic waste water can be purified until it is safe for drinking. Furthermore, although the purified water is used again as domestic water and becomes domestic wastewater, the domestic wastewater can be repeatedly highly purified by the present invention and used as domestic water.

As described above, according to the domestic wastewater advanced purification treatment circulation system of the present invention and the domestic wastewater advanced purification treatment circulation method using the same, it is possible to repeatedly purify limited water and use it as domestic water, especially desertification. It has high utility value in countries and regions where water is scarce due to the above, and if the composition of the present invention is unitized and assembled on site, it is extremely effective in securing living water in evacuation life due to earthquakes, fires, wars, etc. There is an effect that.

  In addition, sludge, which is a solid phase separated and settled in multiple separation and sedimentation tanks, can be used as organic fertilizer for cultivation of fields and trees, and highly purified water before sterilization is supplied to ponds. It can be used for fish culture and can also be used as water for hydroponics.

It is a domestic wastewater advanced purification treatment circulation system which is one embodiment of the invention according to claim 1, and is an overall state diagram in which a contact material arranged in a floating state in the central portion of the advanced aeration tank is omitted . It is a state perspective view showing a pair of diffuser tubes and backwash tubes provided in an advanced aeration tank constituting the domestic wastewater advanced purification treatment circulation system according to the present invention. It is a domestic wastewater advanced purification treatment circulation system which is one embodiment of the invention according to claim 3, and is an overall state diagram in which a contact material arranged in a floating state in the central portion of the advanced aeration tank is omitted . In the state perspective view which shows the relationship between the contact material arrange | positioned in the floating state in the center part in the tank in the advanced aeration tank which comprises the domestic waste water advanced purification treatment circulation system which concerns on this invention, a diffuser pipe, and a backwash pipe is there.

  The living wastewater advanced purification treatment circulation system according to claim 1 according to the present invention stores and cultures a complex effective microorganism group consisting of symbiotic microorganisms mainly composed of lactic acid bacteria, yeast and photosynthetic bacteria, and oil-degrading microorganisms. A combined effective microorganism group culture tank, connected to the combined effective microorganism group culture tank, domestic wastewater containing contaminants, a combined effective microorganism group cultured in the combined effective microorganism group culture tank, and sludge A treated water amount adjusting tank is provided in which sludge stored in the storage tank is mixed and aerated to allow the composite effective microorganism group to grow while decomposing dirt in the wastewater.

  In the complex effective microorganism group mentioned here, the symbiosis of useful microorganisms mainly composed of lactic acid bacteria, yeast, and photosynthetic bacteria is, for example, EM · 1 (trade name, ( Yes) Sanko Sangyo Co., Ltd.) and EM / Arsenon (trade name, manufactured by Nippon Life Co., Ltd.) Snome Wide N (trade name, manufactured by Asenti) is included.

  The complex effective microorganisms grown in the treated water amount adjustment tank are sent into the advanced aeration tank adjacent to the sewage by the submersible pump.For example, the amount of treated water is increased so that the combined effective microorganism group sent into the advanced aeration tank is increased. If the vertical and horizontal lengths of the adjustment tank and the advanced aeration tank are the same, the depth of the treated water volume adjustment tank is made deeper than the depth of the advanced aeration tank so that the capacity of the treated water volume adjustment tank is larger than the capacity of the advanced aeration tank. It is desirable to grow a large number of complex effective microorganisms in a treated water amount adjustment tank.

  By sending more complex effective microorganisms to the advanced aeration tank, the ability to adsorb and decompose sewage dirt in the advanced aeration tank increases.

The treated water amount adjusting tank also has a role of adjusting the amount of complex effective microorganisms flowing into the advanced aeration tank connected to the treated water amount, and the advanced water pump is appropriately operated by, for example, an appropriate operation of the submersible pump provided in the treated water amount adjusting tank. Adjust the amount of sewage sent to the aeration tank.

In the advanced aeration tank, sewage is aerated by the air discharged from the diffuser pipes installed in the advanced aeration tank, and is placed close to the upper part of the diffuser pipe so that it has an angle of 90 degrees with the diffuser pipe. By simultaneously exhausting air from multiple installed backwash pipes simultaneously, the sewage collides in the advanced aeration tank, and as a result, effective microorganisms in the sewage collide with each other in the advanced aeration tank. To do. During this collision, some of the effective microorganisms are thought to break their cell walls and leach out their cytoplasm. Since the leached cytoplasm is colloidal and has viscosity and elasticity, it is judged that dirt in the sewage is efficiently adsorbed to the cytoplasm.

  The sewage treated in the advanced aeration tank is considered to be in a state in which the dirt is highly agglomerated mainly with the cytoplasm of the effective microorganisms, and the sewage is separated in this state continuously connected to the advanced aeration tank. It is sent to the settling tank. In the separation / sedimentation tank, it is considered that the dirt efficiently adsorbed to the cytoplasm of the effective microorganisms is in a highly aggregated state, so the weight per unit of the aggregate is large, and the sedimentation rate due to its own weight is also relatively fast. Precipitates efficiently at the bottom of the separation and precipitation tank. Moreover, the purified water which is a liquid phase separated from these stays upward.

At least two separate sedimentation tanks are connected in series, and in the first separate sedimentation tank connected to the advanced aeration tank, the dirt adsorbed on the cytoplasm of the active microorganisms is partly in the process of decomposition. Accordingly, a part of the dirt in the aggregated state may be lifted upward and floated. The agglomerates floating above are usually called scum, but the scum is treated so as not to flow into the second separation and sedimentation tank connected thereto.

In the treatment, first, sludge as a solid phase is sucked up by an air lift and sent to a sludge storage tank to lower the water level in the first separation and precipitation tank. Thereafter, air is discharged from the air diffuser provided in the first separation / sedimentation tank and aerated. The gas adsorbed on the scum is removed by the aeration, and the scum is precipitated at the bottom of the first separation / precipitation tank and separated from the liquid phase. By such treatment, scum does not flow into the second separation / sedimentation tank.

On the other hand, the inner walls of the plurality of separation / precipitation tanks, which are the first separation / precipitation tank, desirably have a smooth finish like, for example, polyethylene terephthalate (PET) resin. When is smooth, dirt in the coagulated state in the sewage does not adhere to the inner wall surface, and the solid phase and the liquid phase are separated at a higher speed.

Next, the liquid phase separated in the first separation / sedimentation tank passes over the overflow weir and is sent to the second separation / sedimentation tank, and the sludge, which is the solid phase separated and settled in the first separation / sedimentation tank, is removed by an air lift. It is collected by being sucked up and sent to a sludge storage tank.

  In the second separation / sedimentation tank, the water, which is the liquid phase that flows in, is highly purified, so that no scum is generated as in the first separation / settlement tank. In principle, it is not necessary to provide an air diffuser that discharges air and performs aeration. However, a diffuser tube may be provided for the purpose of purifying to a higher degree, and a larger number of separation and sedimentation tanks may be connected in series.

  The water separated in the second separation / sedimentation tank is highly purified, and the purified water is sterilized in the second separation / sedimentation tank, which is the last one. Sterilized and reused as domestic water.

  A part of the water separated in the second separation / precipitation tank is supplied to the complex effective microorganism group culture tank without passing through the sterilizer, and used for culturing the complex effective microorganism group.

  Next, the domestic wastewater advanced purification treatment circulation system according to claim 2 according to the present invention is the domestic wastewater advanced purification treatment circulation system according to claim 1, wherein the last separation precipitation in a plurality of serially arranged separation sedimentation tanks. A sedimentation tank is provided in connection with the tank, and in the sedimentation tank, purified water, which is a liquid phase separated in the last separated sedimentation tank, is supplied to the diffuser pipe and the reverse provided in the sedimentation tank. At the same time, it is aerated by the air exhausted from the washing tube to separate a trace amount of organic matter.

The purified water from which the organic matter has been separated is sent to a sterilizer, sterilized, and reused as domestic water. Further, a part of the purified water separated in the precipitation water tank is supplied to the complex effective microorganism group culture tank without passing through the sterilizer and used for culturing the complex effective microorganism group.

  Moreover, the domestic wastewater advanced purification treatment circulation system of Claim 3 which concerns on this invention is the domestic wastewater advanced purification treatment circulation system of Claim 1 in the separation separation precipitation of the last among several separated sedimentation tanks arranged in series. A first water storage tank is provided in connection with the tank, and the purified water separated in the last separation and precipitation tank is temporarily stored. A settling tank is connected to the first tank, and the purified water flowing from the first tank is simultaneously aerated by the air discharged from the air diffuser and backwash pipe provided in the set tank. In the unlikely event that a trace amount of organic matter is separated.

  A second water tank is connected to the precipitation water tank, and highly purified water discharged from the precipitation water tank is temporarily stored in the second water tank. The purified water discharged from the second water tank is reused as domestic water through a sterilizer. A part of the purified water discharged from the second water storage tank is supplied to the complex effective microorganism group culture tank without passing through the sterilizer, and is used for culturing the complex effective microorganism group.

According to a fourth aspect of the present invention, there is provided a domestic wastewater advanced purification treatment and circulation method which purifies the domestic wastewater by treating it with the domestic wastewater advanced purification treatment circulation system according to any one of the first to third aspects. Recycled as domestic water, the domestic wastewater containing the pollutant is further treated and purified by the same domestic wastewater advanced purification treatment circulation system according to any one of claims 1 to 3, and reused as domestic water repeatedly. It is made to use.

  This will be described in detail below with reference to FIGS.

FIG. 1 is a diagram showing an entire state diagram of a domestic wastewater advanced purification treatment circulation system which is an embodiment of the invention according to claim 1, omitting a contact material arranged in a floating state in the central portion of the advanced aeration tank . is there. FIG. 4 shows an embodiment of an advanced aeration tank in which a contact material is placed in a floating state in the center of the tank. 1 is a house where people live and collects all wastewater from kitchens, baths, toilets, toilets, etc., and the collected domestic wastewater flows into the upper left end of the treated water amount adjustment tank 20 in FIG. In addition, a drainage collecting pipe 2 is connected to the house 1 and the treated water amount adjusting tank 20.

  In addition to the drainage recovery pipe 2, a combined effective microorganism group input pipe 11 for introducing a composite effective microorganism group for decomposing pollutants in domestic wastewater is connected to the upper left end of the treated water amount adjustment tank 20. In order to decompose again the sludge in the sludge storage tank 60 that stores the sludge after treating the sludge, a sludge down pipe 61 through which a part of the sludge flows down is connected.

The other end of the composite effective microorganism group input tube 11 is connected to the bottom of the composite effective microorganism group culture tank 10 for storing and culturing the composite effective microorganism group, and a purified water input pipe is disposed above the composite effective microorganism group culture tank 10. 59 is continuously provided. The purified water separated in the second separation / precipitation tank 50 described later flows from the purified water supply pipe 59.

The composite Valid microbial culture tank 10, as the air diffuser air pipe 12 have been disposed, the composite effective microorganisms can be efficiently cultured in purifying water flowing down from the purified water feeding pipe 5 9, The air supplied from the air supply pump 13 is discharged as air bubbles from the air diffusion pipes 12a and 12b fixed in a T-shape to the tip of the air diffusion pipe 12, and aerated.

  The complex effective microorganism group is a mixture of EM · 1 (trade name, manufactured by Sanko Sangyo) and SNOMWIDE N (trade name, manufactured by Asenti), and the complex effective microorganism group culture tank 10 contains water. 100 liters of 500 ml of EM · 1 and 500 g of SNOMWIDE N were added, and 500 g of vegetable waste oil such as crushed vegetable waste and tempura oil was added, and a complex effective microorganism group which was aerated and cultured for about 3 days. Reserved. The complex effective microorganism group can ensure a sufficient amount by newly culturing about once a month depending on the amount of domestic wastewater to be treated.

Meanwhile, the volume of treated water regulation tank a plurality of the 20 diffuser air pipe 21 have been arranged as they go downward, the upper portion of the diffuser air pipe 21 is provided continuously with the horizontal flue 22, the horizontal The air supply pipe 22 is connected to an air supply pump 23 for supplying air. Diffuser air pipe 21 of the pipe 21a diffuser in a T-shape the tip, 21b are fixed, the air sent from the air pump 23 pipe 21a diffusing through the horizontal flue 22 and diffuser air pipe 21, from 21b The air bubbles are discharged and the sewage in the treated water amount adjusting tank 20 is aerated.

  The sewage in the treated water amount adjusting tank 20 gradually flows down from the left to the right in FIG. 1, and the sewage in the treated water amount adjusting tank 20 is highly aerated at the right end of the treated water amount adjusting tank 20. A sewage flow pipe 24 to be fed into the tank 30 is continuously provided, and an inlet end of the sewage flow pipe 24 is disposed so as to be buried in the sewage in the treated water amount adjusting tank 20, and a water flow is provided at the tip of the sewage flow pipe 24. The pump 25 is fixed. The other end of the sewage flow pipe 24 is connected to the left end of the advanced aeration tank 30 so that the sewage sent by driving the submersible pump 25 flows into the advanced aeration tank 30.

  Since the composite effective microorganism group is aerated in the treated water amount adjusting tank 20 while being mixed with the sewage, the composite effective microorganism group grows in reverse while the dirt in the sewage is decomposed by the composite effective microorganism group. . The sewage containing the complex effective microorganism group is sent to the advanced aeration tank 30 by the sewage flow pipe 24, but it is preferable that the amount of the complex effective microorganism group sent to the advanced aeration tank 30 is larger. The depth of the treated water amount adjusting tank 20 is deeper than the depth of the advanced aeration tank 30 so that the capacity of the water amount adjusting tank 20 is larger than the capacity of the advanced aeration tank 30.

  In addition, a float switch (not shown) is connected to the submersible pump 25. When the amount of water in the treated water amount adjusting tank 20 exceeds a specified level, the float switch is automatically activated to drive the submersible pump 25. The sewage in the treated water amount adjustment tank 20 flows down into the advanced aeration tank 30 through the sewage flow pipe 24.

In the advanced aeration tank 30, as shown in FIG. 2, a diffused air pipe 31 having T-shaped diffused pipes 31a and 31b fixed to the tip part and backwashing pipes 32a and 32b fixed to the tip part are also provided. backwash air pipe 32, the aeration tube 31a, 31b and the backwash tube 32a, at an angle of 90 degrees in the 32b provided so as to cross, diffuser air pipe 31 and the backwash air tube 32 shown in FIG. 2 In the embodiment shown in FIG. 1, two sets are arranged in the advanced aeration tank 30. The number of the diffused air pipes 31 and the backwash air pipes 32 can be increased or decreased according to the amount of sewage to be aerated.

The upper ends of the diffused air pipe 31 and the backwash air pipe 32 are connected to a horizontal air supply pipe 33, and the horizontal air supply pipe 33 is connected to an air supply pump 34 for feeding air. Air fed from the air pump 34 is discharged simultaneously become air bubbles from the horizontal flue 33, diffuser air tube 31, the backwash air tube 32 through to diffusion pipe 31a, 31b, the backwash tube 32a, 32b, The sewage in the advanced aeration tank 30 is aerated. Here diffusing pipe 31a of diffuser air tube 31, because 31b is disposed at an angle of 90 degrees with respect to the backwash tube 32a, 32b of the backwash air pipe 32, sewage altitude aeration is aerated It will be in the state which collides violently in the tank 30. FIG. For this reason, it is considered that the effective microorganisms contained in the sewage collide vigorously with each other as described above, and some of the collided effective microorganisms break the cell wall, and the cytoplasm contained therein is leached. Since the leached cytoplasm is colloidal and has viscosity and elasticity, it is judged that dirt in the waste water is efficiently adsorbed to the cytoplasm.

  The advanced aeration tank 30 is connected with an aeration water flow pipe 35, and the sewage in the treated water amount adjusting tank 20 is sent into the advanced aeration tank 30 by driving the submersible pump 25. When the amount of water in the tank 30 exceeds a certain level, the water naturally flows into a substantially upper part of the first vertical inflow pipe 41 having a cylindrical shape with an open lower part provided in the adjacent first separation and precipitation tank 40. It ’s like that.

  Since the sewage flowing into the first vertical inflow pipe 41 is highly aerated in the advanced aeration tank 30, it is considered that the dirt is highly agglomerated mainly with the cytoplasm of effective microorganisms as a center. The agglomerated dirt settles down at the bottom of the first separation / sedimentation tank 40 by gentle flow in the first vertical inflow pipe 41.

The lower end of the first vertical inflow pipe 41 has already settled at the bottom of the first separation / precipitation tank 40 when the sewage that has been highly aerated in the advanced aeration tank 30 flows into the upper part of the first vertical inflow pipe 41. It is disposed above the bottom surface of the first precipitation separation tank 40 so that the precipitate, which is the solid phase, does not rise.

As described above, the sediment in which dirt is agglomerated stays on the bottom surface of the first separation / precipitation tank 40, while the purified water separated from the dirt stays in the upper part of the first separation / precipitation tank 40.

  The retained purified water sequentially passes over the overflow weir 42, passes through the separated purified water feed pipe 43, and is provided in a second separation / precipitation tank 50 arranged in series with respect to the first separation / precipitation tank 40. It flows into the substantially upper part in the second vertical inflow pipe 51 having an open cylindrical shape. Since the purified water flowing into the second vertical inflow pipe 51 is purified, it hardly contains agglomerated dirt, but it may be contained in a small amount by gently flowing down in the second vertical inflow pipe 51. The agglomerated dirt that cannot be settled at the bottom of the second separation and precipitation tank 50, and highly purified purified water stays at the top of the second separation and precipitation tank 50.

  In addition, the lower end part of the 2nd vertical inflow pipe 51 provided in the 2nd separation / precipitation tank 50 is the purified water separated from the dirt in the 1st separation / precipitation tank 40 similarly to the said 1st vertical inflow pipe 41. When the liquid flows into the upper part of the second vertical inflow pipe 51, the second sedimentation separation is performed so that the sediment that is the solid phase precipitated at the bottom of the second separation / precipitation tank 50 should not be allowed to rise. The tank 50 is disposed above the bottom surface.

The first separating settling tank 40 by scum diffuser air pipe 44 are disposed vertically, trachea 44a diffusing the lower tip of the scum diffuser air tube 44, 44b is secured in a T-shape. The upper part of the scum aeration air pipe 44 is connected to the air supply pump 45. When the scum floats on the upper part of the first separation sedimentation tank 40, air is supplied from the air supply pump 45, and the air diffusion pipe 44a, By discharging air bubbles from 44b and aeration, the gas adhering to the floating scum is removed.

In FIG. 1, the scum diffuser air pipe 54 is also provided in the second separation / sedimentation tank 50, so that if the scum floats in the second separation / sedimentation tank 50, From the scum diffuser tubes 54a and 54b fixed in a T-shape to the lower end of the diffuser air tube 54, the air sent from the air supply pump 55 is discharged and aerated as air bubbles.

  Air lifts 46 and 56 are provided at the central portions of the first vertical inflow pipe 41 and the second vertical inflow pipe 51, respectively, and sludge settled at the bottom of the first separation / precipitation tank 40 or the second separation / precipitation tank 50. The sludge settled on the bottom is sucked up, passed through the sludge collection pipes 47 and 57, and then collected in the sludge storage tank 60 through the sludge storage tank collection pipe 62.

The highly purified purified water staying in the upper part of the second separation / precipitation tank 50 sequentially passes the overflow weir 52, flows down the highly purified water feed pipe 58, and is sterilized with chlorine in the sterilizer 70, It is designed to be reused in the house 1 as living water. The sterilizer 70 may be sterilized by irradiating with ultraviolet rays in addition to sterilization by chlorine, or a combination of these. A screen box (not shown) with a detachable screen is provided at a position of the advanced purified water feed pipe 58 in front of the sterilizer 70 (on the right side of the sterilizer 70 in FIG. 1). The screen is used to remove floating dust in the purified water flowing down in the flow pipe 58. For this reason, floating dust does not flow into the sterilizer 70.

Tables 1 to 3 show the water quality test results of the water sterilized by the sterilizer 70. The water quality test was conducted at Mizu Lab Co., Ltd. (registered for measurement certification business, Tokyo No. 1290).

Table 1 shows the inspection results of 15 items according to the inspection method according to the Ministerial Ordinance No. 101 of the Ministry of Health, Labor and Welfare No. 101 of Water Quality Standard, Table 2 shows the inspection results of total nitrogen, total phosphorus, and ammonia nitrogen, and Table 3 shows the five items The test results are shown. For example, BOD is 1 and it is highly purified so as to be suitable for drinking.

  A part of the highly purified purified water exceeding the overflow weir 52 passes through the purified water input pipe 59 without passing through the sterilizer 70 and is sent to the complex effective microorganism group culture tank 10 for reuse. In addition, in order to stably supply the purified water that has passed through the sterilizer 70 to the house 1, it is possible to provide a storage tank that is connected to the sterilizer 70 and temporarily stores the purified water. It is also possible to form the purified water in an amount exceeding that directly in the drainage recovery pipe 2.

Diffuser air pipe 63 to the sludge storage tank 60 is not disposed in the vertical direction, the trachea 63a diffusing in a T-shape at its distal end, 63 b is fixed, the upper portion of the diffuser air pipe 63 air pump 64 is continuously provided.

Since the sludge stored in the sludge storage tank 60 is gradually solidified, air is appropriately sent from the air pump 64, and air bubbles are discharged from the air diffusion pipes 63a and 63b of the air diffusion air pipe 63 and aerated. Thus, the sludge is softened so that the sludge can flow from the sludge flow down pipe 61 to the treated water amount adjusting tank 20.

In addition, as a result of repeated reuse of domestic wastewater by the domestic wastewater advanced purification treatment circulation system according to the first embodiment, when the amount of water for purification treatment is insufficient, water and rainwater such as rivers and ponds are drained together with domestic wastewater. It can be configured to replenish via the collection tube 2.

Next, Example 2 will be described. FIG. 3 is a diagram showing an entire state diagram of a domestic wastewater advanced purification treatment circulation system which is an embodiment of the invention according to claim 3, omitting a contact material arranged in a floating state in the central portion of the advanced aeration tank . is there. The configuration of the house 1, the combined effective microorganism group culture tank 10, the treated water amount adjustment tank 20, the advanced aeration tank 30, the first separation / precipitation tank 40, the second separation / precipitation tank 50, the sludge storage tank 60, and the sterilizer 70 are the same as those in the above embodiment. 1, the description is omitted. Here, a first water storage tank 80 connected to the second precipitation separation tank 50, a precipitation water storage tank 90 connected to the first water storage tank 90, and a second water storage tank 85 connected to the first water storage tank 85. The configuration of will be described.

  The highly purified purified water flowing down over the overflow weir 52 in the second sedimentation separation tank 50 is provided in the central part of the first water storage tank 80 through the first stored water delivery pipe 81 and the lower part is It flows into the substantially upper part in the first water tank vertical inflow pipe 82 having an open cylindrical shape.

  The purified water stored in the first water storage tank 80 is sucked in by the air lift 83, passes through the precipitation water tank distribution pipe 84, and is input to the precipitation water storage tank 90 connected to the precipitation water storage tank distribution pipe 84. It is made to be. In the present embodiment, water is supplied by the air lift 83, but water may be supplied by a submersible pump instead.

The settling tank 90 is partitioned by four open partition walls 91a, 91b, 91c, 91d so that purified water can flow sequentially from left to right in FIG. Purified water flowing down from the settling tank distribution pipe 84 first enters the first chamber 92. First chamber 92, second chamber 93, the third chamber 94, have been diffuser air pipe 96 and the backwash air pipe 97 is arranged as shown in Figure 2, the tip of the diffuser air tube 96 A diffuser tube is fixed in a T shape, a backwash tube is fixed in a T shape at the tip of the backwash air tube 97, and the other end is connected to a horizontal air supply tube 99. The horizontal flue 99 air pump 100 is being continuously provided, and air is sent from the air pump 100 depending on the state of the clarified water, aeration and discharging air bubbles at the same time from the aeration tube and backwash tube It is made possible.

  By the aeration treatment, the organic matter contained in the purified water in the first chamber 92, the second chamber 93, and the third chamber 94 can be separated.

  The purified water flowing down from the third chamber 94 is moved to the upper part of the fourth chamber 95, and the fourth chamber 95 is provided with a filter medium 98 made of activated carbon or a filter medium equivalent thereto. . The purified water in the upper part of the fourth chamber 95 passes through the filter medium 98 and moves to the lower part of the fourth chamber 95. At that time, the purified water is further purified by the filter medium 98. The purified water that has passed through the filter medium 98 passes through the lower portion of the open partition wall 91d and flows down into the second water storage tank 85 through the second reserved water delivery pipe 86.

  In the center of the second water tank 85, a second water tank vertical inflow pipe 87 having a cylindrical shape with an open bottom is provided in a vertical shape, and an air lift 88 is disposed at the center. ing. The purified water stored in the second water storage tank 85 through the second stored water distribution pipe 86 is sucked up by the air lift 88, flows down in the advanced purified water flow pipe 58, and passes through the sterilizer 70. It is sterilized and reused in the house 1 as domestic water. The sterilizer 70 may be sterilized by irradiating with ultraviolet rays in addition to sterilization by chlorine, or a combination of these. In this embodiment, water is supplied by the air lift 88, but water may be supplied by a submersible pump instead.

  A portion of the purified water in the second water storage tank 85 is sent to the combined effective microorganism group culture tank 10 through the purified water input pipe 59 without passing through the sterilizer 70 and reused. In addition, in order to supply the purified water that has passed through the sterilizer 70 to the house 1 in a stable manner, it is possible to provide a storage tank that is connected to the sterilizer 70 and temporarily stores the purified water. It is the same as in Example 1 that the amount of purified water exceeding 1 can be formed to flow directly down to the drainage recovery pipe 2.

In addition, if the amount of water for purification treatment is insufficient as a result of repeated reuse of domestic wastewater by the domestic wastewater advanced purification treatment circulation system according to the second embodiment, water and rainwater such as rivers and ponds are collected together with domestic wastewater. It can be formed so as to be replenished through the drainage collecting pipe 2 as in the first embodiment.

Next, FIG. 4 will be described. FIG. 4 shows the inside of the advanced aeration tank 30 in the first embodiment and the second embodiment.

Reticulated bodies 36a and 36b are stretched to the left and right so as to sandwich the central portion of the advanced aeration tank 30 in FIG. 4, and a large number of plastic contact materials 37 are arranged in a floating state in the central portion. Yes. The contact material 37 can have various shapes, but the contact material 37 is formed larger than one mesh of the mesh bodies 36a and 36b , and therefore does not pass above the mesh body 36a. There is no passage below the mesh 36b .

Diffuser air tube 31, the backwash air tube 32 of the distal end portion 2 similarly to diffuser tubes 31a, 31b, and backwash tube 32a, 32b has been fixed in a T-shape, respectively, feeding from the air pump 34 The air that is generated reaches the diffused air pipe 31 and the backwash air pipe 32 through the horizontal air pipe 33 and is simultaneously discharged as air bubbles from the respective diffuser pipes 31a and 31b and the backwash pipes 32a and 32b. The sewage in 30 is vigorously stirred and aerated.

When the sewage in the advanced aeration tank 30 is agitated, the contact materials 37 also collide with each other, and the effective microorganisms present in the sewage are thought to increase the chance of being killed by the collision with the contact material 37 . As the amount of effective microorganisms killed increases, as described above, dirt in the sewage is more adsorbed to the cytoplasm leached from the broken cell walls of the effective microorganisms and seems to aggregate more highly.

  In Example 2, a sediment recovery pipe (not shown) for recovering the sediment is provided at the bottom of the sedimentation reservoir 90 in the case where dirt is deposited on the bottom of the sedimentation reservoir 90. (Not shown), the other end of the sediment collection pipe is connected to the sludge storage tank collection pipe 62, and the sediment in the sediment storage tank 90 is sludged by opening the collection valve. It can also comprise so that it may collect | recover in the storage tank 60. FIG.

DESCRIPTION OF SYMBOLS 1 House 2 Wastewater collection pipe 10 Combined effective microorganism group culture tank 11 Combined effective microorganism group input pipe 12 Aeration air pipe 12a, 12b Aeration pipe 13 Air supply pump 20 Treated water amount adjustment tank 21 Aeration air pipe 21a, 21b Aeration pipe 22 horizontal air pipes 23 air pump 24 sewage feed flow tube 25 submerged pump 30 high aeration tank 31 diffuser air tube 31a, 31b diffusion pipe 32 back washing air tube 32a, 32b backwash tube 33 horizontal feed pipe 34 the air supply pump 35 aeration Water flow pipe
36a, 36b network
37 Contact material 40 First separation / precipitation tank 41 First longitudinal inflow pipe 42 Overflow weir 43 Separated purified water supply pipe 44 Scum diffused air pipe 44a, 44b Scum diffused pipe 45 Air supply pump 46 Air lift 47 Sludge collection pipe 50 Second separation sedimentation tank 51 Second longitudinal inflow pipe 52 Overflow weir 54 Scum diffused air pipe 54a, 54b Scum diffused pipe 55 Air feed pump 56 Air lift 57 Sludge recovery pipe 58 Advanced purified water feed pipe 59 Purified water input pipe 60 sludge storage tank 61 sludge flow down pipe 62 sludge storage tank recovery pipe 63 aeration air pipe 63a, 63b aeration pipe 64 air pump 70 sterilizer 80 first water tank 81 first water storage delivery pipe 82 first water tank vertical inflow Pipe 83 Airlift 84 Precipitation reservoir distribution pipe 85 Second reservoir 86 Second reservoir delivery pipe 87 Second reservoir longitudinal inflow pipe 88 Airlift 90 Precipitation reservoir 91a, 91b, 91 c, 91d Open partition 92 First chamber 93 Second chamber 94 Third chamber 95 Fourth chamber 96 Aeration air pipe 97 Backwash air pipe 98 Filter material 99 Horizontal air supply pipe 100 Air supply pump

Claims (4)

In a combined effective microorganism group culture tank that stores and cultivates a complex effective microorganism group consisting of lactic acid bacteria, yeast, photosynthetic bacteria, and other useful microorganisms, and oil-degrading microorganisms. A treatment water amount adjustment tank that adjusts the amount of combined effective microorganism group flowing into the advanced aeration tank while aeration by mixing the combined effective microorganism group of sludge and sludge in the sludge storage tank and amplifying the combined effective microorganism group,
Arrange the contact material in a floating state in the center of the tank, and arrange the diffuser tube and backwash tube at an angle of 90 degrees, and discharge air from the diffuser tube and backwash tube at the same time for aeration . Then, an advanced aeration tank that causes the combined effective microorganisms flowing from the treated water amount adjustment tank to collide with each other to adsorb and decompose dirt in the sewage,
A plurality of separation and sedimentation tanks arranged in series to separate sewage treated in an advanced aeration tank into a solid phase and a liquid phase;
A sludge storage tank that collects and stores sludge precipitated in a plurality of separate settling tanks;
A domestic wastewater advanced purification treatment circulation system comprising a sterilizer for sterilizing purified water which is a liquid phase separated in a separation and precipitation tank at the tail end. The combined effective microorganism group culture tank according to claim 1, a treated water amount adjustment tank, an advanced aeration tank, a plurality of separation and sedimentation tanks arranged in series, and a sludge storage tank,
A precipitation reservoir for separating organic matter by aeration of purified water, which is a liquid phase separated in the last separation and sedimentation tank;
A domestic wastewater advanced purification treatment circulation system comprising a sterilizer for sterilizing purified water treated in a settling tank. The combined effective microorganism group culture tank according to claim 1, a treated water amount adjustment tank, an advanced aeration tank, a plurality of serially arranged sedimentation tanks, and a sludge storage tank,
A first water storage tank for storing purified water that is a liquid phase separated in the last separation and sedimentation tank;
A precipitation reservoir that separates organic matter by aeration of purified water flowing from the first reservoir;
A second water storage tank for storing purified water separated in the precipitation water storage tank;
A domestic wastewater advanced purification treatment circulation system comprising a sterilizer for sterilizing the purified water in the second water tank. The domestic wastewater is processed by the domestic wastewater advanced purification treatment circulation system according to any one of claims 1 to 3 and reused as domestic water, and the domestic wastewater is further the same as any one of claims 1 to 3. A domestic wastewater advanced purification treatment circulation system characterized in that it is treated and purified by the domestic wastewater advanced purification treatment circulation system and repeatedly reused as domestic water.

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