KR20090053634A - Disposal plant for recycling waste water and soil - Google Patents

Abstract

The present invention relates to a high-treatment device for recycling waste water, the present invention is a waste water tank screen (11), solid-liquid separator (13), sedimentation / filtration storage tank (15), the first aerobic reaction tank (17), 2nd aerobic reaction tank 19, the 1st advanced processing tank 21, the 1st flow control tank 23, the 1st wood chip microorganism reaction tank 25, the 2nd advanced processing tank 27, and the 2nd flow adjusting tank 31 ), The second wood chip microbial reaction tank (33), the decolorization filtration tank (35), the treated water storage tank (39) in order to pass through the organic solids, such as sludge contained in the waste water, organic floating substances and eutrophication Completely removes nitrogen, phosphorus, color, and odor, which are substances, and also installs a solid-liquid separator in the sewage and wastewater treatment system to process organic solids such as food waste, sewage sludge, and livestock wastewater sludge. Discharged wastewater to wastewater treatment system Purification can be treated so that you can be.

The present invention is installed in the sewage and wastewater treatment system to install a crude wood screen, solid-liquid separator, sediment / filtration storage tank to treat foreign substances, such as food waste and earth and sand, general wastewater sludge, livestock wastewater sludge and livestock wastewater sludge while sediment / filtration storage tank and solid solution The wastewater from the separator can be sent to the wastewater treatment system for treatment, which can dramatically improve the practicality and stability of the treatment.

Wastewater, treatment equipment, wood chips, media, aeration, diffuser, solid-liquid separator, livestock wastewater, sludge

Description

Advanced treatment device for recycling waste water {DISPOSAL PLANT FOR RECYCLING WASTE WATER AND SOIL}

The present invention relates to an advanced wastewater treatment system, and more specifically, to a wastewater wastewater screen, a solid-liquid separator, a precipitation / filtration reservoir, a first aerobic reactor, a second aerobic reactor, a first advanced treatment tank, and a first The sludge contained in the waste water by passing through the flow rate adjusting tank, the first wood chip microbial reaction tank, the second advanced treatment tank, the second flow rate adjusting tank, the second wood chip microbial reaction tank, the decolorizing filtration tank, and the treated water storage tank in order. It completely removes organic solids, organic suspended solids, and nitrogen, phosphorus, color, and odor, which are the causes of eutrophication, and also installs solid-liquid separator in the wastewater treatment system, and organic solids such as food waste, sewage sludge, and livestock wastewater sludge. Wastewater recycling that can dramatically improve practicality and stability by treating wastewater generated from solid-liquid separator with wastewater treatment system An advanced processing apparatus.

In general, sewage or livestock wastewater containing manure and domestic wastewater contains a large amount of nitrogen and phosphorus, which are the causes of eutrophication, and causes odors. It acts as an essential nutrient for protein and nucleic acid synthesis for proliferation, and surpluses are removed or discharged. Especially, when discharged into rivers or lakes, eutrophication causes water pollution.

Therefore, biological or chemical treatment processes are applied to remove nitrogen, phosphorus and odor in the conventional wastewater treatment system. However, the application of chemical treatment process is complicated due to the treatment cost or the presence of professional manager. There is a difficulty in this.

In addition, in the treatment of food waste and livestock waste, there are many obstacles to treatment unlike general household wastewater, and a separate treatment process and equipment have to be installed, which is inconvenient in use, and thus, improvement measures are required.

Meanwhile, Patent Document No. 10-452479, "Wastewater Treatment System," which is a conventional technology, is disclosed. Referring to FIG. 1, the configuration of the wastewater treatment system is described below.

First, the wastewater treatment system 1 is configured with a screen 11 for filtering suspended matter and foreign matter of a certain size contained in the contaminated water, and the collection tank 15 and the coagulation tank 21 are sequentially formed on the screen 11. In this case, the flocculation tank 21 is provided with a flocculant injector for flocculating the contaminants contained in the sewage.

The flocculation tank 21 is connected to a settling tank 23 for precipitating aggregated sludge, and the settling tank 23 is an anaerobic tank 31 for removing organic matter by contacting microorganisms with sewage and a sludge thickening tank 25 for collecting sludge. ) Are connected to each other, and the anaerobic tank 31 is connected to a secondary settling tank 33 for settling the sludge contained in the sewage again.

The secondary sedimentation tank 33 is connected to the chemical tank 41 and the sludge concentration tank 25 is provided with a chemical injector to decompose contaminants by introducing a chemical into the purified water, the purified water tank 41 is connected to each A discharge tank 43 for discharging to the sewer is connected.

And, the sludge concentration tank 25 is connected to the dehydrator 13 for dewatering the sludge.

Looking at the operation of the prior art configured as described above, when the sewage is introduced into the wastewater treatment system 1, the sewage is passed through the screen 11, the sludge and foreign matter having a specific size is filtered, after which the sewage passes through the screen By passing through the sump (15) to the coagulation tank (21).

When the sewage flows into the coagulation tank 21, the coagulant is introduced from the coagulant injector, and the foreign matter and suspended matter, etc. contained in the sewage are coagulated by the coagulant and sludged, and the sewage and the sludge are moved to the settling tank 23. .

Sewage introduced into the sedimentation tank 23 as described above is moved to the anaerobic tank 31 as the sludge contained therein falls to the bottom, and the sludge separated from the sewage is transferred to the sludge thickening tank 25 while settling on the bottom.

Subsequently, the sewage moved to the anaerobic tank 31 is moved to the secondary sedimentation tank 33 while the organic matter is removed and purified by microorganisms, and the sewage reaching the secondary sedimentation tank 33 is not sludge that is primarily separated. Will precipitate.

At this time, the sludge precipitated on the bottom is moved to the sludge thickening tank 25, and at the same time sewage is moved to the chemical tank (41).

The sewage reaching the chemical tank 41 is moved to the discharge tank 43 while being purified by the injected chemicals, and the purified water introduced into the discharge tank is discharged to the sewer when the water level reaches the full water level.

On the other hand, the sludge introduced into the sludge concentration tank 25 is sent to the collection station in a dry state while the water is dehydrated by the dehydrator (13).

The prior art as described above is a structure that removes organic matter while condensing foreign matter and suspended matter contained in sewage to form a sludge, and thus does not completely remove nitrogen, phosphorus, color, and odor contained in the sewage. There is a structural problem.

On the other hand, when the food waste accompanying the domestic sewage directly into the wastewater treatment system 1, the load of BOD, etc. is increased, so that it cannot be efficiently treated, and thus has a drawback that there is no practicality and stability.

It is an object of the present invention to purify sewage / wastewater by treating the sewage / wastewater with a crude screen, a solid-liquid separator, a precipitation / filtration reservoir, a first aerobic reactor, a second aerobic reactor, a first advanced treatment tank, a first flow regulating tank, and 1 Wood chips microbial reaction tank, the second advanced treatment tank, the second flow rate adjustment tank, the second wood chip microbial reaction tank, decolorization filtration tank, treated water storage tank in order to pass through the organic suspended solids and nitrogen, phosphorus, chromaticity, It is to provide an environmentally friendly wastewater recycling advanced treatment device that can drastically remove odors.

Another object of the present invention is to provide a solid-liquid separation of organic solids, such as livestock waste water sludge, food waste, etc. through a solid-liquid separator, and advanced processing apparatus for recycling environmentally friendly wastewater, which can drastically improve the practicality and stability of its treatment efficiency. To provide.

As an implementation means for implementing an advanced treatment apparatus for recycling environmentally friendly wastewater according to the present invention:

Crude screen passing only the waste water below a certain size;

A first chamber for storing the waste water discharged from the crude wood screen, a solid-liquid separator for receiving the waste water transported by pumping the waste water stored in the first chamber, and a solid-liquid separator, and the discharged water separated from the solid-liquid separator. A sedimentation / filtration storage tank composed of a second chamber introduced into the second chamber, and a third chamber in which wastewater and wastewater from the second chamber flows into the lower portion and is filled with elvan and oyster shells therein;

And a first chamber for storing the waste water discharged from the sedimentation / filtration reservoir, and a second chamber configured to flow the waste water from the lower side of the first chamber and flow upward. A first aerobic reactor;

A second exhalation reactor for receiving and storing wastewater discharged from the first exhalation reactor and removing organic matter by aeration;

A first advanced treatment tank receiving the treated water discharged from the second aerobic reaction tank and the filtering device and removing organic matter, nitrogen, phosphorus, and chromaticity contained therein;

A first flow rate adjusting tank configured to store a predetermined amount of treated water and adjust a flow rate while being connected through the first advanced processing tank and a filtration device;

A first wood chip microbial reaction tank receiving the treated water discharged from the first flow rate adjustment tank and removing organic matter remaining therein;

A second advanced treatment tank receiving the treated water discharged from the first wood chip microbial reaction tank and removing residual organic matter, nitrogen, phosphorus, and chromaticity therein;

A second flow rate adjustment tank configured to store a predetermined amount of treated water and adjust a flow rate while being connected through the second advanced treatment tank and a filtration device;

A second wood chip microbial reactor receiving the treated water discharged from the second flow rate adjusting tank and removing residual organic matter therein;

A decolorizing filtration tank which receives the treated water from the second wood chip microbial reaction tank and removes the chromaticity remaining in the treated water;

Characterized in that the treatment water storage tank for storing the discharged water discharged from the decolorization filtration tank and discharged when the water is full.

The present invention, sewage and waste water tank screen, solid-liquid separator, sediment / filtration storage tank, the first aerobic reactor, the second aerobic reactor, the first advanced treatment tank, the first flow control tank, the first wood chip microbial reactor, the second advanced treatment Through the tank, the second flow control tank, the second wood chip microbial reaction tank, the decolorization filtration tank, the treated water storage tank, etc., organic solids such as sludge contained in the sewage and waste water, organic suspended solids, nitrogen, It completely removes phosphorus, color, and odor, and also installs solid-liquid separator in wastewater treatment system to treat organic solids such as food waste, sewage sludge, and livestock wastewater sludge, while treating wastewater generated from solid-liquid separator. The system purifies the water to a degree that can be recycled.

Hereinafter, the advanced treatment apparatus for recycling waste water according to the present invention will be described in more detail with reference to FIGS. 2 to 12.

First, the structure and function of each tank (tank) of the sewage and wastewater treatment system have the same structure and function as the patent application No. 2007-81245 "Removable non-discharge manure and sewage advanced treatment apparatus" patented by the present inventors. The sequence or function is further advanced, and the above structure is explained as follows.

The waste water treatment apparatus 100 includes a rough screen 11 for filtering only the waste water having a predetermined size or less while filtering foreign substances contained in the waste water as shown in FIG. 2. 11) The inside is provided with a filter net of a certain size (20-50 mm) or a strainer made by combining a circular rod, and is connected to the sedimentation / filtration reservoir 15.

The sedimentation / filtration reservoir 15 is composed of a first chamber 15a, a second chamber 15b, and a third chamber 15c, as shown in FIG. When the wastewater flows into the first chamber 15a of the sedimentation / filtration storage tank 15 and reaches a certain level, the sewage and sewage water precipitated while the pump P1 is operated by sensing the water level sensor S1 is solid. Transfer to separator (13).

Solids are separated from the solids separator 13 so that the solids are discharged to the outside and the discharged water is introduced into the second chamber 15b again. The wastewater flowing into the second chamber 15b is moved to the third chamber 15c along the connection passage under the second chamber 15b, and some of the remaining suspended matter is trapped in the gap between the elvan and the oyster shell filled therein. Filtering flows to the upper side of the third chamber 15c, and flows into the first exhalation reactor 17 through the outlet B1.

On the other hand, the pump P2 is installed in the conveying pipe P2a in the lower part of the second chamber 15b, and the sludge accumulated in the second chamber 15b is removed while being operated intermittently by a timer connected to the circuit control device. It conveys to one chamber 15a.

As shown in FIG. 4, the first exhalation reactor 17 is partitioned by the partition 18 to be divided into a first chamber 17a and a second chamber 17b and connected to a lower portion by a connecting passage. When the wastewater discharged from the third chamber 15c of the sedimentation / filtration storage tank 15 flows into the first chamber 17a, the wastewater flows from the lower portion to the upper portion and flows naturally into the second chamber 17b. Will flow.

The second chamber 17b of the first exhalation reactor 17 is provided with a diffuser 17c which is covered with a protective tube 18a at the bottom and connected to the air pump A2. And oyster shell, inorganic media, etc., and the discharge pipe (B3) is installed in the upper portion so that the waste water and waste water enters the second aerobic reaction tank (19).

As shown in FIG. 5, the second air reactor 19 is provided with a diffuser 19a having an air pump A2 connected to the bottom thereof, and a filtration device 20 is provided at one side wall. The upper part of the filtration device 20 is provided with a discharge pipe (B4) for guiding the treated water into the first advanced treatment tank (21).

In addition, the inside of the second aerobic reaction tank (19) is aeration with wastewater and wastewater by inputting an appropriate amount of wood chips and inorganic media made by chipping cedar for active breeding and activity of microorganisms.

In the filtration device 20, eleven rocks (10 to 20 mm), wood chips (7 to 10 mm), and activated carbon (5 to 10 mm) cube media (20a (mixing ratio is not specified)) are stacked in a volume ratio. have.

As shown in FIG. 6, the first advanced processing tank 21 is provided with an diffuser 21a for aeration of air by an air pump A3 periodically operated at the bottom, and the upper portion of the diffuser 21a. There is a cylindrical barrel 21b (reactor) of a size corresponding to the capacity of the tank made of a stainless steel porous plate.

In addition, the first advanced processing tank 21 is provided with a filtration device 22 on one side wall, and discharge pipe B4 for guiding the treated water to the first flow rate adjustment tank 23 above the filtration device 22. ) Is installed.

In the cylinder 21b, denitrification and deinmediation media 22a, which are formed in the form of a cube by mixing, compressing and molding dozens of kinds of mineral powders for removing organic substances, nitrogen, phosphorus, and chromaticity as the main raw materials, Filled, the filtration device 22 is filled in a volume ratio of a cube media (22a) consisting of ganban stone of less than 10mm in size, wood chips of 5-7mm in size, activated carbon of 3-6mm in size.

A conveying pipe P4a and a conveying pump P4 for conveying the excess treated water to the first chamber 17a of the first exhalation reactor 17 as shown in FIG. 7 in the first flow regulating tank 23. Is installed. In order to prevent the overflow of the treated water in the system in case of the failure of the transfer pump P4, it is preferable to install the discharge pipe B4a at a predetermined height so that the treated water can be discharged to the outside.

In addition, the first flow rate adjustment tank 23 is provided with a transfer pump P3 and a level sensor S2 connected to the circuit control device 60. The treated water transferred by the transfer pump P3 (see FIG. 2) is sprinkled to the upper portion of the first wood chip microbial reaction tank 25 through the spray nozzle 25b along the transfer pipe P3a.

As shown in FIGS. 8 and 14, the first wood chip microbial reactor 25 has an air pipe with an air pump A4 that is periodically turned on and off by the circuit controller 60. A protective device 25c for smooth operation and protection of the diffuser 25a is provided.

Inside the first wood chip microbial reactor 25, cedar wood chips for removing sap and chromaticity up to a predetermined height are divided into three stages of upper, middle, and lower layers by size 3-4 mm, 5-7 mm, and 8-10 mm. A proper amount is laminated based on volume by division.

The first wood chip microbial reaction tank 25 guides the treated water to the second advanced treatment tank 27 through the outlet 25d.

As shown in FIGS. 9 and 14, the second advanced processing tank 27 includes an air diffuser 27a having an air pump A5 controlled on / off by a circuit control device 60. ) Is installed. The upper part of the diffuser 27a is provided with a cylindrical cylinder 27b, REACTOR, having a size corresponding to the capacity of the tank made of a stainless steel porous plate. In addition, a filtration device 28 is installed on one side wall of the second advanced treatment tank 27, and a discharge pipe B5 for guiding the treated water to the second flow rate adjustment tank 31 is installed on the upper portion of the filtration device 28. It is.

Inside the cylinder (27b) is a dust-absorbing, de-in medium made in the form of a cube by mixing and compressing various kinds of mineral powders having the effect of removing organic matter, nitrogen, phosphorus, chromaticity, etc. as a main raw material at a specific ratio. It is filled.

In the filtration device 28, ganban stones of 10 mm or less in size, wood chips of 5-7 mm in size, activated carbon of 3-6 mm in size, and denitrification, cube media 28a for dephosphorization, etc. are stacked in a volume ratio.

In the second flow regulating tank 31, a transfer pump P5 and a conveying pipe P5a for conveying the excess treated water to the first chamber 17a of the first exhalation reactor 17 are provided as shown in FIG. It is installed. On the other hand, in case of emergency, the discharge pipe B5a is installed at a predetermined height in order to prevent the overflow of the treated water in the system in case the operation of the transfer pump P5 is stopped.

The second flow rate adjustment tank 31 is provided with a water level sensor S3 for detecting a water level, and is connected to the feed pump 32a and the circuit control device 60 controlled by the circuit control device 60. S2 is provided, and a transfer pipe P6a for guiding the treated water pumped by the transfer pump P6 is located above the second wood chip microbial reaction tank 33. The treated water transferred along the transfer pipe P6a is sprinkled onto the second wood chip microorganism reaction tank 33 through the water spray nozzle 33b.

As shown in FIG. 11, the second wood chip microbial reactor 33 is provided with an air diffuser 33a coupled to an air pump A6 that operates to periodically supply air by a circuit control device. The protection device 33c is installed on the upper part of the diffuser 33a for protection and smooth operation.

Inside the second wood chip microbial reaction tank 33, three levels of cedar wood chips from which sap and chromatic components have been removed up to a predetermined height are sized 3 to 4 mm, 5 to 7 mm, and 8 to 10 mm. It is divided into the appropriate amount based on the volume.

The second wood chip microbial reaction tank 33 is connected to the decolorization filtration tank 35 by an outlet 33d.

The decolorization filtration tank 35 is composed of first to fourth chambers 35a to 35d as shown in FIG. 12, and the treatment discharged from the second wood chip microbial reaction tank 33 is performed in the first chamber 35a. Water is stored and activated carbon is filled in the second to fourth chambers 35b to 35d. 2 to 3 mm of activated carbon is filled in the second chamber 35b, 4 to 6 mm of activated carbon is filled in the third chamber 35c, and 5 to 8 mm of activated carbon is filled in the fourth chamber 35d. A discharge pipe B6 connected to the treated water storage tank 39 is installed.

The treated water stored in the first chamber 35a is disposed at the bottom between the first chamber 35a and the second chamber 35b so that the chromaticity is effectively processed when the second through fourth chambers pass sequentially. A connecting passage is provided between the chamber 35b and the third chamber 35c at the upper side and between the third chamber 35c and the fourth chamber 35d at the lower portion thereof.

The treatment water storage tank 39 is provided with a transfer pipe (P7a) and a feed water pump (P7) for transferring the storage water.

As described above, each of the transfer pump, the water level sensor, the air pump, and the water feed pump constituting the wastewater treatment system includes setting means such as a water level sensor and a timer, and a programmed semiconductor as shown in FIGS. 13 and 14. It is controlled by the circuit control device 60 through the same synchronization means.

On the other hand, the crude wood screen (11), solid-liquid separator (13), sediment / filtration storage tank (15), the first aerobic reactor (17), the second aerobic reactor (19), the first advanced treatment tank (21) configured as described above , The first flow rate adjusting tank 23, the first wood chip microbial reaction tank 25, the second high processing tank 27, the second flow rate adjusting tank 31, the second wood chip microbial reaction tank 33, the decolorization filtration tank 35 ), The sequential or structural form and size of the treated water storage tank 39 can be adjusted somewhat according to the conditions of the installation site (capacity, raw water conditions), and the solid-liquid separation step is difficult in the condition of raw water such as livestock wastewater and very poor. May be further added to the flocculation process, and in order to remove odors, a deodorization device may be installed in the top cover portion of the sedimentation / filtration storage tank 15 to remove odors and gases generated from the entire system and discharge them to the outside. .

In addition, in the livestock wastewater treatment facility, ozone, chemical disinfection process, etc. may be added to the treated water storage tank 39 to recycle the final treated water.

In addition, in order to ensure the stability of the treatment system, when installing the pump, one more spare device is installed, and in case of a device failure, the control device can immediately proceed with the change of a simple operation button so that the operation of the system can proceed stably.

Referring to the operation of the present invention configured as described above are as follows.

The sewage sewage, living sewage containing food waste, livestock waste water containing livestock waste, etc. pass through the crude wood screen 11, and foreign substances of a certain size or more are filtered out, and the sewage / waste water passed through the sedimentation / filtration reservoir 15 When the water flows into the chamber 15a and the solid matter is settled and reaches a certain level, the water level sensor S1 connected to the circuit control device 60 is operated to transmit a sensing signal to the circuit control device, and at the same time the pump (by the circuit control device) P1) is driven in accordance with the command of the control device to transfer the waste water to the solid-liquid separator 13 through the transfer pipe P1a.

Solids separated and treated in the solid-liquid separator 13 are discharged to the outside, and the separated wastewater discharge water is introduced into the second chamber 15b of the sedimentation / filtration reservoir 15 through the discharge pipe 13a.

The sewage / wastewater introduced into the second chamber 15b of the sedimentation / filtration storage tank 15 enters the third chamber 15c along the lower passage of the second chamber 15b and flows upward.

At this time, the wastewater flowing upward from the third chamber 15c passes between the elvan and oyster shells filled therein, and is caused by the microorganisms parasitic on the surface of the elvan and the oyster shell in anaerobic conditions. Nitrogen and organic matter contained in the waste water are partially decomposed or removed.

Sedimentation / filtration storage tank 15 The pump installed in the first chamber 15a selects the type of pump to be applied from the cutter pump or the fixed-quantity pump according to the components of the incoming raw waste water and the solid concentration.

In the pump operating as described above, when the sewage / wastewater level in the first chamber 15a of the sedimentation / filtration reservoir 15 is lowered to a certain level, the water level sensor S1 senses and delivers it to the circuit control device and sends it to the circuit control device. By stopping the power supplied to the pump (P1) by the stop, and again, when the waste water is introduced into the water level reaches a certain level, the pump (P1) is operated again.

On the other hand, the solid sludge settled in the lower part of the sedimentation / filtration storage tank 15 and the 2nd chamber 15b is intermittently operated and conveyed to the 1st chamber 15a. The conveying pump P2 may be configured to install a timer (not shown) in the circuit control device 60 so as to be periodically turned on / off every predetermined time.

In the livestock wastewater treatment facility with a high concentration of livestock concentrate, a coagulant injector is installed before the wastewater is transferred from the first chamber 15a of the sedimentation / filtration storage tank 15 to the solid-liquid separator 13. Additional sedimentation procedures may be added.

Waste water is introduced into the first chamber 17a of the first aerobic reaction tank 17 through the discharge pipe B1 installed in the third chamber 15c of the sedimentation / filtration storage tank 15, and the first chamber 17a. Wastewater and wastewater enter the second chamber 17b along the lower passage of the flow path and flow upwards of the second chamber 17b.

In the second chamber (17b), the waste water is aerated periodically through the diffuser (17c) while passing between the filled bedrock and the oyster shell. Microorganisms decompose and remove organic matter, nitrogen and phosphorus again.

Here, the air is supplied through the diffuser installed near the bottom of the second chamber 17b of the first aerobic reactor 17 so that the second chamber of the first aerobic reactor 17 becomes aerobic, and when the air supply is stopped, anoxic state Becomes At this time, the first chamber 17a and the first chamber 17a are separated from the second chamber 17b and are operated in an almost anoxic state.

In the aerobic state as described above, ammonia nitrogen (NH-N) contained in the sewage is converted into nitrite nitrogen (NO-N), and nitrite nitrogen (NO-N) is again converted to nitrate nitrogen (NO-N). The nitrification reaction proceeds to conversion.

As described above, when nitrification proceeds, nitrifying bacteria nitrosomonas or nitrobacter are involved.

The nitrification process in the aerobic state is as follows.

(Nitrosomonas)

^{_{(1) NH 4 + + 3/2}} 0 2 ---------------> NO 2 - + H 2 O + 2H +

(Nitrobacter)

^{_{(2) NO 2 - + 1/2}} O 2 - ---------------> NO 3 -

In addition, when the aerobic state as described above, the microorganisms acidize the substrate stored in the cell to obtain energy for the biological reaction, and by using the re-absorbed phosphate phosphorus is stored in the form of polyphosphoric acid in the cell.

Unlike the above, when the air supply through the diffuser 9 is stopped, the inside of the first aerobic reactor is anoxic, whereby the denitrification microorganism proceeds with denitrification to release nitrogen (N).

The denitrification process is as follows.

_{^{NO 3 - ---> NO 2 -}} ---> NO ---> N 2 O ---> N 2

In addition, when the first chamber 7a and the second chamber 7b of the first aerobic reactor 7 are anaerobic, the microorganism hydrolyzes the polyphosphoric acid in the cell to release the phosphorous acid.

Phosphorus released as described above is excessively ingested by the microorganisms in the aerobic process, and these microorganisms are subsequently removed to achieve a biological dephosphorization reaction, and at the same time, the phosphorus contained in the sewage is first and second advanced treatment tank (53). ), (52) denitrification, dephosphorized media are adsorbed or decomposed.

In addition, in the oyster shell and wood chips filled in the first and second aerobic reactors, aerobic microorganisms parasitic on the surface, anaerobic microorganisms parasitic on the inner surface, while aerobic microorganisms store phosphorus in cells while promoting nitrification process. In addition, anaerobic microorganisms denitrify NO, releasing N and simultaneously removing organic matter. The wastewater introduced into the second exhalation reactor 19 is mixed with wood chips and inorganic media filled in the second exhalation reactor 19 so that the air pump is periodically controlled by the circuit controller 60. During operation, the aerobic state progresses periodically as the air is aerated by the diffuser. In this process, organic matter is decomposed and removed by aerobic microorganisms parasitic adsorbed on the surface of wood chips and inorganic media and anaerobic microorganisms parasitic inside wood chips.

The waste water treated in the second aerobic reaction tank 19 is moved to the first advanced treatment tank 21 through a filtration device. The operation and configuration of the filtration device will be described below.

The wood chips installed in the filtration device perform physical filtration and at the same time decompose and remove organic matters by aerobic and anaerobic microorganisms parasitic on wood chips. do.

On the other hand, denitrification and inmedian adsorb and decompose and remove nitrogen, phosphorus and organic substances contained in sewage.

In the first advanced treatment tank 21, the media and OH filled in the cylinder 21b as the waste water flowed in through the discharge pipe B3 from the second aerobic reaction tank 19 is aerated in the diffuser 21a. By contacting the wastewater, nitrogen, phosphorus, organic matter and chromaticity contained in the wastewater are removed.

The wastewater treated by the filtration as described above in the first advanced treatment tank 21 is introduced into the first flow rate adjustment tank 23 through the discharge pipe B4 while being filtered while passing through the filtration device.

The treated water flowing into the first flow regulating tank 23 transmits the level of the treated water to the circuit control device 60 by detecting the level of the water level sensor S2, and the circuit control device turns on the feed pump P3. Control on / off.

If the water level of the treated water flowing into the first flow regulating tank 23 reaches a certain level, the treated water is returned to the first chamber 17a of the first aerobic reaction tank 17 through the conveying pipe P4a provided at a predetermined position. do. At this time, if the treated water cannot be transferred in a timely manner due to a power failure or a failure of the transfer pump P4, the treated water is discharged to the outside through the discharge pipe installed above the first flow adjusting tank 23.

When the treated water flows from the first advanced processing tank 21, as described above, the feed pump P3 is controlled by the action of the water level sensor S2 and the circuit controller 60, and the feed pump P3 is pumped. Through the spraying nozzle (25b) of the transfer pipe (P3a) to which (P3) is attached to the upper portion of the first wood chip microbial reaction tank (25).

Of course, when the water level is lowered, the operation of the transfer pump P3a is stopped by the water level sensor S2 and the circuit control device 60.

By the above method, the first flow adjusting tank 23 is nitrified by an aerobic microorganism adsorbed on the surface of the wood chip as described above while passing through the wood chip layer filled therein through the water spray nozzle 25b. As the process is accelerated, the intake process of phosphorus released is progressed, and on the other hand, N is released by substantially denitrification by anaerobic microorganisms adsorbed inside the wood chip, and at the same time, residual organic matter is removed by the microorganisms.

The air is supplied to the stacked wood chip layers while the air is periodically aerated in the diffuser in the lower part of the first wood chip microbial reaction tank 25 so that the activity and propagation of parasitic microorganisms in and around the wood chip are vigorously increased.

As described above, the treated water, in which a large amount of organic matter, nitrogen, phosphorus, etc. is removed, is transferred to the second advanced treatment tank 27 through a discharge pipe 25d installed under the first wood chip microbial reaction tank 25.

In the second advanced treatment tank 27, the treated water introduced from the first wood chip microbial reaction tank 25 is treated again in the same process and method as in the first advanced treatment tank 21, so that the second flow adjusting tank ( 31), the second flow rate adjustment tank 31, the treated water introduced from the second advanced processing tank 27 to the second wood chip microorganism in the same process and method as the first flow rate adjustment tank (23) The water is sprayed to the top of the reactor 33.

In the second wood chip microbial reaction tank 33, the treated water transferred and sprinkled from the second flow rate adjusting tank 31 is treated again in the same process and method as in the first wood chip microbial reaction tank 25, and decolorized filtration tank through the discharge pipe ( 35) Drain the treated water.

The wastewater introduced as described above is passed through the solid-liquid separator 13, and sludge and solids are separated and discharged to the outside, and the discharged water discharged from the solid-liquid separator 13 is precipitated / filtered storage tank 15, 2, and The organic matter, nitrogen, phosphorus, etc. are firstly removed while sequentially passing through the three chambers and the first aerobic reaction tank 17 and the second aerobic reaction tank 19, and the first advanced treatment tank 21 and the first wood chip microbial reaction tank. While sequentially passing through (25), a large amount of organic matter, nitrogen, phosphorus, chromaticity, etc. are secondarily removed, and again, the second advanced processing tank 27 and the second wood chip microbial reaction tank 33 are sequentially removed. Almost all organic matter, nitrogen, phosphorus, and chromaticity are removed.

In the decolorization filtration tank 35, the treated water introduced from the second wood chip microbial reaction tank 33 through the discharge pipe from the lower part of the first chamber to the upper part of the second chamber through the connection pipe installed at the lower end from the first chamber to the fourth chamber, Natural oil flows from the upper part of the two chambers to the lower part of the third chamber and from the upper part of the third chamber to the lower part of the fourth chamber, while passing through the activated carbon filled in each chamber, a small amount of organic matter remaining and the like is completely removed. The treated water treated in the decolorizing filtration tank 35 is discharged to the treated water storage tank 39.

The rainwater collection pipe is connected to and installed in the first chamber 35a of the decolorization filtration tank 35. A part of the treated water is evaporated while the wastewater treatment system is operated. At this time, if the amount of evaporation is greater than the inflow of waste water, the overall amount of water is reduced. Therefore, the rainwater is collected in the upper cover, the roof, etc. in preparation for such a case, and the water collecting pipe is connected to the first chamber 35a of the decolorizing filtration tank 35 to use rainwater as supplementary water.

If too much rainwater is introduced, the over water is discharged to the outside through the discharge pipe (B7) of the treated water storage tank 39, there is also an effect to solve the accumulated load of the treated water to improve the water quality.

The treated water storage tank 39 stores the treated water transferred from the decolorization filtration tank 35 and discharges the over water to the outside. A water supply pump (P7) is installed inside and connected to an external recycling water facility (41) through a transfer pipe to recycle the treated water for other purposes such as cleaning water, landscaping water, etc. (P7) A return pipe is installed to the first chamber of the first aerobic reaction tank (17), and the concentration of waste water is diluted through irregularly artificially treated water return to reduce the load of the entire treatment system. Improve the treatment efficiency of the wastewater treatment system so that a stable treatment system can be operated. On the other hand, the treated water storage tank 39 may be further provided with ozone or a chemical disinfection device (not shown).

1 is a block diagram of a conventional wastewater treatment system,

2 is an overall configuration diagram of an advanced treatment apparatus for recycling waste water according to the present invention;

3 is an enlarged cross-sectional view of main parts of a sedimentation / filtration storage tank of the advanced wastewater treatment system shown in FIG. 2;

4 is an enlarged sectional view of main parts of the first aerobic reactor in the advanced wastewater treatment system shown in FIG. 2;

FIG. 5 is an enlarged cross-sectional view of main parts of a second aerobic reactor in the advanced wastewater treatment system shown in FIG. 2;

6 is an enlarged cross-sectional view of main parts of a first advanced treatment tank in the advanced wastewater treatment system shown in FIG. 2;

FIG. 7 is an enlarged cross-sectional view of a main part of a first flow regulating tank in the advanced wastewater treatment system shown in FIG. 2;

8 is an enlarged cross-sectional view of main parts of a first wood chip microbial reactor in the advanced wastewater treatment system shown in FIG. 2;

9 is an enlarged cross-sectional view of main parts of a second advanced treatment tank in the advanced wastewater and wastewater treatment apparatus shown in FIG. 2;

FIG. 10 is an enlarged cross-sectional view of main parts of a second flow regulating tank in the advanced wastewater treatment system shown in FIG. 2;

FIG. 11 is an enlarged cross-sectional view illustrating main parts of a second wood chip microbial reactor in the advanced wastewater treatment system shown in FIG. 2;

12 is an enlarged cross-sectional view of main parts of a decolorizing filtration tank of the advanced wastewater treatment system shown in FIG. 2;

FIG. 13 is an enlarged cross-sectional view illustrating main parts of a treatment water storage tank of the advanced wastewater treatment system shown in FIG. 2;

FIG. 14 is a block diagram illustrating a circuit control device in the advanced wastewater and wastewater treatment apparatus shown in FIG. 2.

<Description of the symbols for the main parts of the drawings>

11: early screen 13: solid-liquid separator

15: sedimentation / filtration storage tank 17: first aerobic reaction tank

19: second aerobic reactor 21: first advanced treatment tank

23: first flow rate adjusting tank 25: first wood chip microbial reaction tank

27: second advanced processing tank 31: second flow adjusting tank

33: second wood chip microbial reactor 35: decolorization filtration tank

39: treated water reservoir 60: circuit control device

A1 to A6: Air pump P1 to P7: Pump

S1 ~ S3: Water level sensor

Claims (4)

A crude screen 11 for passing only the waste water of a certain size or less; The solid-liquid separator which receives the wastewater discharged by pumping the wastewater stored in the 1st chamber 15a, and the 1st chamber 15a which stores the wastewater discharged | emitted from the said timber screen 11, and solid-liquid separator. (13), the second chamber (15b) into which the discharged water separated from the solid-liquid separator (13) flows, and the waste water of the second chamber (15b) flows into the lower portion, and the elvan rock and the oyster shell are filled therein. A sedimentation / filtration storage tank 15 composed of a third chamber 15c; And a first chamber 17a for storing the waste water discharged from the third chamber 15c of the sedimentation / filtration reservoir 15, and the wastewater flows in from the lower side of the first chamber 17a to the upper side. A first exhalation reactor (17) configured to flow and including a second chamber (17b) filled with elvan and oyster shells; A second exhalation reactor (19) for receiving and storing wastewater discharged from the first exhalation reactor (17) and removing organic matter by aeration; A first advanced treatment tank 21 connected to the second aerobic reaction tank 19 and a filtration device to remove organic matter, nitrogen, phosphorus, and chromaticity contained in the sewage; A first flow rate adjustment tank 23 for storing a predetermined amount of treated water and adjusting a flow rate while being connected through the first advanced treatment tank and a filtration device; A first wood chip microbial reaction tank 25 which receives the treated water discharged from the first flow rate adjustment tank 21 and removes organic matter remaining therein; A second advanced treatment tank 27 which receives the treated water discharged from the first wood chip microbial reaction tank 25 and removes residual organic matter, nitrogen, phosphorus, chromaticity, etc. therein; A second flow rate adjustment tank 31 for storing a predetermined amount of treated water and adjusting a flow rate while being connected through the second advanced treatment tank and a filtration device; A second wood chip microbial reactor 33 for receiving the treated water discharged from the second flow adjusting tank and removing residual organic matter therein; A decolorizing filtration tank 35 which receives the treated water from the second wood chip microbial reaction tank 33 and completely removes the chromaticity remaining in the treated water; Advanced treatment apparatus for recycling the waste water, characterized in that the treated water storage tank 39 for storing the treated water discharged from the decolorization filtration tank 35, and discharged when full. 2. The flocculant injector according to claim 1, further comprising a flocculant injector for injecting a flocculant into the waste water transported between the first chamber (15a) and the solid-liquid separator (13) of the precipitation and filtration storage tank (15). Advanced treatment equipment for recycling wastewater. The advanced treatment apparatus for recycling waste water according to claim 1, wherein a rainwater collecting pipe is connected to the decolorization filtration tank (35) first chamber (35a). The advanced treatment apparatus for recycling waste water according to claim 1, wherein the treatment water storage tank (39) is further provided with an ozone or chemical disinfection device.

Images