KR101938119B1 - Waste water treatment apparatus - Google Patents

Abstract

The present invention relates to a large-capacity wastewater treatment apparatus capable of treating a large quantity of wastewater. The large-capacity wastewater treatment apparatus comprises: a screen tank (10) to filter out impurities contained in inflow wastewater; a flow adjustment tank (20) to transport wastewater passing through the screen tank (10) to a next place in a uniform amount; a denitrification tank (30) to denitrify wastewater transported from the flow adjustment tank (20); a nitrification tank (40) to firstly nitrify contaminants in wastewater transported from the denitrification tank (30); a microorganism reaction tank (50) to secondly nitrify organic nitrogen and ammonia nitrogen remaining in wastewater transported from the nitrification tank (40) into nitrite nitrogen or nitrate nitrogen; a surplus sludge settling tank (70) in which surplus sludge remaining in wastewater after the second nitrification process settles; an advanced treatment tank (80) to remove organic matters and nitrogen components remaining in wastewater transported from the microorganism reaction tank (50) to make treatment water; a sterilization discharge tank (90) to sterilize the treatment water transported from the advanced treatment tank (80) to discharge the sterilized treatment water to the outside; and a continuous aeration unit (110) to continuously supply air to the flow adjustment tank (20), the nitrification tank (40), the advanced treatment tank (80), and the sterilization discharge tank (90).

Description

[0001] Waste water treatment apparatus [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment apparatus, and more particularly, to a large-capacity wastewater treatment apparatus capable of mass-treating wastewater having various pollutants regardless of changes in seasonal environment.

Generally, wastewater discharged from houses, apartments, restaurants, farmhouses and the like is subjected to wastewater treatment such as screening, flow control, nitrification, denitrification, It is treated and discharged to the river.

In this case, the screen tank filters the contaminants contained in the wastewater, the wastewater is transferred in a uniform amount in the flow rate control tank, the nitrification tank and the denitrification tank decompose and treat the nitrogen compounds in the wastewater and the treated water in the nitrification tank and the denitrification tank The residual sludge contained is settled and removed. Prior art related to this is disclosed in Utility Model Registration No. 20-0290126 under the name of an intermittent operation type submerged membrane separation activated sludge wastewater treatment system due to fluctuation of influent water load.

However, in the wastewater treatment apparatus, when the contamination concentration in the wastewater is increased or decreased, or when the temperature is changed according to the season, the degree of treatment is not constant, and the wastewater is discharged to the river in a state containing a large amount of pollutants in the treated water Which caused pollution of the ecosystem.

In addition, since the concentration of contaminants contained in the wastewater and the degree of treatment depend on the external temperature environment, there was a limit in increasing the overall treatment capacity.

It is an object of the present invention to provide a large-capacity wastewater treatment apparatus capable of mass-processing wastewater having various pollutants generated in houses, apartments, restaurants, farmhouses, and the like.

It is another object of the present invention to provide a large-capacity wastewater treatment apparatus capable of constantly performing an advanced treatment even when the concentration of pollution in the wastewater is not constant or even when the temperature changes according to the season.

In order to achieve the above object, a large capacity wastewater treatment apparatus according to the present invention comprises: a screen tank (10) for filtering contaminants contained in incoming wastewater; A flow rate adjusting tank 20 for feeding the wastewater via the screen tank 10 to a next location in a uniform amount; A denitrification tank 30 for denitrifying the wastewater transferred from the flow rate regulator 20; A nitrification tank 40 for first nitrifying contaminants in the wastewater conveyed from the denitrification tank 30; A microorganism reaction tank 50 for nitrifying organic nitrogen and ammonia nitrogen remaining in the wastewater transferred from the nitrification tank 40 into nitrite nitrogen or nitrate nitrogen; An excess sludge sedimentation (70) in which the excess sludge remaining in the wastewater after the second nitrification process is settled; An advanced treatment tank 80 for removing organic matter and nitrogen components remaining in the wastewater conveyed from the microorganism reaction tank 50 to make treated water; A disinfecting tank 90 for sterilizing and discharging the treated water transferred from the advanced treatment tank 80 to the outside; And a continuous aeration unit 110 for continuously aerating the air with the flow rate adjusting tank 20, the nitrification tank 40, the advanced treatment tank 80, and the disinfection discharge tank 90.

An aeration mat 121 provided on the bottom of the microbial reaction tank 50 and having a plurality of air holes 121a for discontinuing air into the microbial reaction tank 50, A sensor 122 for measuring a microbial content concentration of the wastewater treated in the microbial concentration sensor 50 and generating a corresponding microbial concentration signal, a discontinuous air sensor 122 for varying the supply amount of air supplied to the aeration mat 121 in conjunction with the microbial concentration signal, Further comprising a discontinuous aeration section 120 comprised of a pump 123.

In order to increase the temperature of the wastewater and to form a channel through which the wastewater flows through the nitrification tank 40 and the microbial reaction tank 50, 132 and a planar heating element 133 provided at the bottom of the rectangular flow path 131. The heater 130 may be a heater,

In the present invention, the screen tank (10) comprises a collection tank (11) formed on the upper side and a floating pollutant contained in the wastewater flowing into the inflow pipe (10a) to the collection tank A sediment transporting part 13 for transporting sedimentation dirt contained in the wastewater introduced into the inflow pipe 10a to the recovery tank 11; And a temporary storage tank 14 in which the wastewater is temporarily stored.

In the present invention, the sedimented contaminant transfer unit 13 includes a hopper 13a installed at the lower side of the screen tank 10 and having an outlet 13a 'for collecting and discharging the sediment, (13b) installed on the lower side screen tank (10) of the collecting tank (13a) and collecting sediment contaminants passing through the hopper outlet (13a '); and a collecting tank A weighing stage 13d installed at the bottom of the collecting tank 13b for measuring the weight of the sediment and producing a corresponding weight signal, And a pump operating portion 13e for operating the transfer pump 13c when the weight of the sedimentation dirt measured at the measuring end 13d becomes equal to or greater than the set weight.

In the present invention, the settling contaminant transferring unit 13 further includes a hopper valve 13f installed at the hopper outlet 13a 'for selectively opening and closing the hopper outlet 13a'.

In the present invention, the settling contaminant transferring section 13 further includes a vibration applying section 13g for applying vibration to the hopper 13a so that the settling contaminant can be focused on the hopper outlet 13a '.

In the present invention, the microorganism reaction tank 50 is provided with one or more (more than one) microorganisms for second nitrifying residual organic nitrogen and ammonia nitrogen in the wastewater via the nitrification tank 40 to nitrite nitrogen or nitrate nitrogen Further comprising a microbial circulation processing section (51); The microbial circulation processing unit 51 includes a front pipeline 51a positioned on the front side and a rear pipeline 51b having an inner diameter spreading rearward on the rear side of the front pipeline 51a, A sub duct 51d which is fixed by the radial vane 51d 'on the inner circumferential surface of the rear duct 51b and has an inner diameter narrower toward the front duct 51a; A mesh pipe 51e provided on the rear side of the sub pipe 51d and exposed to the outside of the rear pipe 51b and a microorganism built in the net pipe 51e and capable of decomposing organic substances in the wastewater The microorganism carrier 51f is provided.

In the present invention, the microbial circulation processing unit 51 further includes a valve 51g for selectively opening and closing the outlet of the sub conduit 51d.

In the present invention, the advanced treatment tank 80 includes a rim 81a provided on the bottom edge of the advanced treatment tank 80 so that the aeration head 111 is embedded therein, and a rim 81a supported by the rim 81a A first filter box 81b in which a first filter 81b 'for removing nitrogen and phosphorus from the wastewater water is firstly installed, and a first filter box 81b which is stacked on the first filter box 81b, A second filter box 81c in which a second filter 81c 'for removing nitrogen and phosphorus remaining in the wastewater via the second filter 81c' And a wastewater conveying pipe 81d extending through the box 81b (81c) and extending into the space inside the rim 81a.

Nitrogen wastewater treatment apparatus according to the present invention includes a nitrification tank, a microbial tank, an excess sludge booster, and a high-level treatment tank, It can be removed and mass-processed at the same time.

In addition, by adopting the discontinuous aeration portion and the microbial circulation treatment portion provided in the microbial reaction tank, it is possible to vary the amount of the wastewater passing through the microbial carrier according to the concentration of the wastewater, thereby enabling efficient treatment, And the decomposition activity of the microorganisms can be uniformed.

By adopting the heater channel, the heat insulating layer and the FRP layer which are provided so as to cover the inner circumferential surface of the microbial reaction tank, it is possible to block the cold heat transmitted from the ground during the cold season and to increase the temperature of the sewage introduced into the microbial reaction tank It is possible to maximize the treatment efficiency by microorganisms.

1 is a view for explaining a configuration of a large capacity wastewater treatment apparatus according to the present invention,
Fig. 2 is a diagram for explaining a configuration extracted from the screen group of Fig. 1,
FIG. 3 is a view for explaining the configuration by extracting the settled contaminant transferring portion of FIG. 2;
FIG. 4 is a diagram for explaining the structure of the microorganism reaction tank of FIG. 1,
FIG. 5 is a diagram for explaining the structure of the microbial circulation processing unit of FIG. 4,
FIG. 6 is a diagram for explaining the configuration extracted from the altitude processing group of FIG. 1,
FIG. 7 is a view for explaining a discontinuous width portion and a heater line installed in the microbial reaction tank of FIG. 1;
Fig. 8 is a perspective view showing the heater pipe shown in Fig. 7; Fig.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a large capacity wastewater treatment apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

In the following, what is referred to as "upper" or "upper" The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by terms. Terms are used only for the purpose of distinguishing one component from another. The singular expressions include plural expressions unless the context clearly dictates otherwise. Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise. Also, the terms "part," "module, " and the like, which are described in the specification, refer to a unit that processes at least one function or operation.

FIG. 1 is a view for explaining a configuration of a large-capacity wastewater treatment apparatus according to the present invention, FIG. 2 is a diagram for explaining a configuration extracted from a screen set of FIG. 1, And Fig.

As shown in the drawings, the large-capacity wastewater treatment apparatus of the present invention includes a screen tank 10 for filtering contaminants contained in incoming wastewater, for example, contaminants floating on wastewater or impurities submerged under wastewater; A flow rate adjusting tank 20 for feeding the wastewater via the screen tank 10 in a uniform amount to the next place; A denitrification tank 30 for denitrifying the wastewater transferred from the flow rate adjusting tank 20; A nitrification tank 40 for first nitrifying contaminants in the wastewater conveyed from the denitrification tank 30; A microorganism reaction tank (50) for second nitrifying organic nitrogen and ammonia nitrogen remaining in the wastewater transferred from the nitrification tank (40) into nitrite nitrogen or nitrate nitrogen; A transport section (60) for transporting part of the second nitrified wastewater into the denitrification tank (40) in the microbial reaction tank (50); An excess sludge sedimentation (70) in which the excess sludge remaining in the wastewater after the second nitrification process is settled; An advanced treatment tank 80 for removing organic matter and nitrogen components remaining in the wastewater conveyed from the microbial reaction tank 50 to produce treated water; A disinfecting tank 90 for disinfecting treated water transferred from the altitude treatment tank 80 and discharging the treated water to the outside; An impure sludge storage tank (100) for temporarily storing contaminants and sludge generated in the screen tank (10) and the excess sludge sedimentation (80); A continuous aeration unit 110 for continuously aerating the air to the flow rate adjusting tank 20, the nitrification tank 40, the altitude treatment tank 80, the disinfection discharge tank 90, and the sludge storage tank 100; A discontinuous thickening section 120 for discontinuing the air into the microbial reaction tank 50; And a heater line (130) between the nitrification tank (40) and the microbial reaction tank (50) to form a flow path through the wastewater and raise the temperature of the wastewater to be transferred.

The continuous aeration unit 110 includes an aeration head 111 installed at the bottom of the flow rate adjustment tank 20, the nitrification tank 40, the disinfection discharge tank 90 and the bottom sludge storage tank 100, And a continuous air pump 112 for supplying air to the line connected to the head 111 for 24 hours.

The screen tank (10) is for filtering the floating or sediment contained in the incoming wastewater. 2, the screen tank 10 is provided with a collection tank 11 formed at the upper side and a floating pollution contaminant contained in the wastewater introduced into the inlet pipe 10a to the collection tank 11 A sediment transporting unit 13 for transporting sedimentation dirt contained in the wastewater introduced into the inflow pipe 10a to the recovery tank 11 and a wastewater removal unit for removing floating dirt and sediment And a temporary storage tank 14 which is temporarily stored.

2, the floating contaminant transferring unit 12 includes a first roller 12a provided on the lower side of the inflow pipe 10a and a second roller 12b provided on the upper side of the recovery tank 11, A perforated porous conveyor 12c which is wound on the first and second rollers 12a and 12b to be endlessly traversed and includes a driving motor 12d for rotating the second roller 12b do.

With this structure, the wastewater flowing into the inlet pipe 10a passes through the pores of the porous conveyor 12c and falls into the screen tank 10. During this process, the floating contaminants contained in the wastewater are transferred to the porous conveyor 12c And is collected and collected in the collection tank 11.

As shown in Fig. 3, the sedimented dirt conveyance portion 13 is provided on the lower side of the screen vessel 10 and includes a hopper 13a having an outlet 13a 'for collecting and discharging sediment dirt, A collection tank 13b which is installed on the lower side screen tank 10 of the collecting tank 13a and collects sedimentation dirt which has passed through the hopper outlet 13a ' A weighing stage 13d installed at the bottom of the collecting tank 13b for measuring the weight of the sediment and producing a corresponding weight signal, A pump operating portion 13e for operating the feed pump 13c when the weight of the measured sedimentation obstacle becomes equal to or greater than a predetermined weight and a pump operation portion 13e for selectively opening and closing the hopper outlet 13a ' And a hopper valve 13f. A vibration applying portion 13g for applying vibration to the hopper 13a may be provided on the back surface of the hopper 13a so that the settling dirt can be converged to the hopper outlet 13a '.

The hopper 13a guides the sediment contained in the wastewater to be collected by the collection tank 13b.

The transfer pump 13c is operated by interlocking with the weight of the sedimentation obstacle measured by the weighing stage 13d and is connected to the sedimentation obstacle 13b through a hose (not shown) connecting the collecting tank 13b and the recovery tank 11, . The transfer pump 13c is operated when a large amount of sedimentation dirt is collected in the collection tank 13b, for example, to operate the transfer pump 13c when a weight of 30 kg or more is measured at the weighing stage 13d The pump operating portion 13e can be set. In this case, when the sedimentation dirts of 30 Kg or more are collected in the collection tank 13b, the weight measurement stage 13d generates a corresponding weight signal and transmits it to the pump operation portion 13e. The pump operation portion 13e, (13c) to transfer sedimentation dirt to the collection tank (11), thereby emptying the collection tank (13b) so as to collect other sedimentation dirt.

The hopper valve 13f closes the hopper outlet 13a 'when the feed pump 13c is activated so that the wastewater flows into the collecting tank 13b while the settling contaminant is being transferred to the collecting tank 11 .

The vibration applying section 13g applies vibration to the hopper 13a periodically or aperiodically, thereby preventing the settling dirt from being accumulated on the surface of the hopper 13a while simultaneously causing the settling dirt to be collected by the hopper outlet 13a '.

By this structure. The sedimentation dirts contained in the wastewater that has passed through the perforated conveyor 12c, for example, sediment, such as sand, fine stone, bone fragments, etc., are collected in the collection tank 13b after passing through the hopper 13a, The impurities are conveyed by the conveyance pump 13c and recovered to the collection tank 11.

The temporary storage tank 14 is located inside the screen tank 10 on the lower side of the recovery tank 11 and temporarily stores and remains calm before the wastewater from which the floating dirt and sediment is removed is discharged to the flow control tank.

The flow rate adjusting tank 20 feeds the wastewater via the screen tank 10 in a uniform amount to the denitrification tank 30, which is the next place. Here, the aeration head 111 provided in the flow rate adjusting tank 20 aids in aerating and stirring the wastewater into the wastewater, and simultaneously supplies oxygen to the microorganisms in the wastewater, thereby causing the microorganisms to decompose organic matters in the wastewater At the same time, it prevents corruption. The wastewater of the flow rate adjusting tank 20 is conveyed by the feed pump 35 while maintaining a uniform amount to the next denitrification tank 30.

The denitrification tank 30 is for denitrifying sludge in the wastewater conveyed from the flow rate regulating tank 20 and includes an agitator 45 for agitating the wastewater. In this denitrification tank 30, nitrate nitrogen or nitrite nitrogen contained in the wastewater transferred from the flow rate control tank 20 or a microorganism reaction tank 50 to be described later is reduced to nitrogen gas and discharged to the atmosphere, do. At this time, since denitrification is performed using denitrifying bacteria and carbon which is an electron donor, which are excellent in activity under anaerobic conditions, organic substances are consumed in the denitrification process and organic substances are eventually removed. In addition, since the denitrification is performed using the carbon source supplied from the wastewater itself, it is possible to reduce the treatment cost by not supplying the external carbon source such as methanol.

The nitrification tank 40 is for nitrifying pollutants in the denitrified wastewater discharged from the denitrification tank 30, and has an aeration head 111 to be described later for aeration of air into wastewater. The air supplied through the aeration head 111 proliferates ammonia oxidizing bacteria or nitrite oxidizing bacteria in the wastewater, and the ammonia oxidizing bacteria or nitrite oxidizing bacteria increase the organic nitrogen or ammonia nitrogen in the wastewater by nitrite nitrogen or nitrate It is nitrified by acid nitrogen.

FIG. 4 is a diagram for explaining the structure of the microbial reaction tank of FIG. 1, and FIG. 5 is a diagram for explaining the structure of the microbial circulation processing unit of FIG. 4.

As shown, the microbial reactor 50 includes one or more microbial circulations for secondary nitrification of the residual organic nitrogen and ammonia nitrogen in the wastewater via the nitrification tank 40 to nitrite nitrogen or nitrate nitrogen, The microbial circulation processing unit 51 is installed on the bottom side of the microbial reaction tank 50 to circulate the wastewater in the microbial reaction tank 50 so that microbes can be uniformly mixed into the wastewater.

5, the microbial circulation processing unit 51 includes a front pipeline 51a located on the front side, a rear pipeline 51b having an inner diameter spreading rearwardly on the rear side of the front pipeline 51a, A water pump 51c provided inside the front pipe 51a and a sub pipe 51c fixed to the inner circumferential surface of the rear pipe 51b by a radial vane 51d 'and having an inner diameter narrower toward the front pipe 51a, A mesh pipe 51e provided on the rear side of the sub pipe 51d and exposed to the outside of the rear pipe 51b and a mesh pipe 51e provided in the mesh pipe 51e to decompose organic substances in the wastewater, A microorganism carrier 51f for providing microorganisms, and a valve 51g for selectively opening and closing the outlet of the sub-channel 51d.

With this structure, when the water flow pump 51c is operated, the wastewater flowing into the rear channel 51b is rapidly accelerated while passing through the front channel 51a, and then discharged. Thus, the wastewater circulates in the microorganism reaction tank 50 So that microorganisms supplied from the microorganism carrier 51f are distributed evenly inside the microorganism reaction tank 50. [

Here, when the contamination concentration of the wastewater flowing into the microbial reaction tank 50 is high, the valve 51g is opened. In this case, a negative pressure is generated in the sub-pipe 51d by the pressure difference in the inside of the rear channel 51b, and the wastewater outside the net pipe 51e is forced to pass through the micro-organism carrier 51f by the negative pressure, And then discharged into the rear pipeline 51b through the pipeline 51d, then discharged through the front pipeline 51a, and then circulated through the microbial reactor 50. [ As a result, a large amount of wastewater is passed through the microorganism carrier 51f, so that a large amount of microorganisms are distributed in the microorganism reaction tank 50. [ This enables effective second nitrification when the contamination concentration of wastewater is high.

On the other hand, when the contamination concentration of the wastewater flowing into the microbial reaction tank 50 is low, the valve 51g is closed. In this case, the outlet of the sub-conduit 51d is closed so that the wastewater does not pass through the microorganism carrier 51f, thereby preventing the microorganism that is parasitic on the microorganism carrier from disappearing.

The microorganism carrier 51f has a form in which microorganisms for treating an organic substance are filled in a polyester sphere having numerous pores formed therein.

On the other hand, in the microorganism reaction tank 50, a heat insulating layer 52 provided to cover the inner circumferential surface thereof and an FRP layer 53 which hermetically covers the surface of the heat insulating layer 52 are formed. By the heat insulating layer 52 covered with the FRP layer 53, it is possible to block the cold heat transmitted from the ground in the cold season, and the heat insulating layer 52 is damaged even if the worker operates the inside of the microorganism reaction tank 50 .

The transport unit 60 transports a part of the second nitrified wastewater into the denitrification tank 30 in the microbial reaction tank 50 and includes a transport pipe 61 connected to the microbial reaction tank 50 and the denitrification tank 30, And a pump 62 provided in the return pipe 61. The nitrite nitrogen or nitrate nitrogen in the second nitrified livestock wastewater conveyed to the denitrifying tank 30 through the carry section 60 is reduced to N2 gas and denitrified.

The excess sludge settling stress 70 is a place where the excess sludge remaining in the wastewater after the second nitrification process is settled, and has a hopper shape that becomes narrower downward so as to effectively sediment the excess sludge.

FIG. 6 is a diagram for explaining the configuration by extracting the altitude treatment group of FIG. 1; FIG.

As shown in the figure, the advanced treatment tank 80 is provided with an advanced treatment unit 81 for removing the organic matter and nitrogen components remaining in the wastewater transferred from the microbial reaction tank 50 to be treated water. The altitude treatment unit 81 includes a frame 81a provided at the bottom edge of the altitude treatment tank 80 so that an aeration head 111 described later will be embedded therein and a frame 81a supported by the frame 81a, A first filter box 81b in which a first filter 81b 'for removing phosphorus from the first filter box 81b is embedded and a second filter box 81b which is laminated on the first filter box 81b and which remains in the wastewater via the first filter box 81b A second filter box 81c in which a second filter 81c 'for removing nitrogen and phosphorus from the second filter 81c is installed and a second filter box 81c connected to the first and second filter boxes 81b and 81c, And a wastewater conveyance pipe 81d extending through the space inside the rim 81a. At this time, when the concentration of nitrogen or phosphorus contained in the wastewater to be treated is high, another filter box can be stacked on the upper side of the second filter box 81c.

An aeration head 111 is housed inside the rim 81a to form a space closed by the first and second filter boxes 81b and 81c and the outlet of the wastewater conveyance pipe 81d is closed by the first and second filter boxes 81b and 81c. And penetrates through the filter pockets 81b and 81c.

The first filter box 81b includes a porous mineral, and the porous mineral may be selected from the group consisting of elvan, pozzolan, zeolite, loess, and combinations thereof. The first filter 81b 'is slightly and slowly decomposed and adsorbs components such as nitrogen and phosphorus.

The second filter box 81c is made of a piece of wood comprising microorganisms. The piece of wood can be manufactured using a species such as cedar having a high water absorbency and a relatively low water-soluble extract content. The piece of wood may be processed into a spherical shape having a size of 3 to 7 mm or 5 to 7 mm to remove the remaining powder, and then put in a vacuum impact drying furnace to remove the sap component and pigment. As the microorganism supported on the second filter box 81c, an aerobic autotrophic micro-organism such as nitrosomonas or nitrobacter which can oxidize ammonia may be used, or nitric acid such as nitric acid Heterotrophic micro-oranism such as aerobacter, bacillus, or micrococcus that can reduce ions can also be used.

The disinfecting discharge tank 90 sterilizes the treated water transferred from the advanced treatment tank 80 and discharges the treated water to the outside, and a disinfectant supply unit 91 for supplying a disinfectant therein is installed therein.

The impure sludge storage tank 100 temporarily stores contaminants and sludge generated in the screen tank 10 and the excess sludge sedimentation 70. At this time, an aeration head 111 for aeration of air is installed at the bottom of the sludge sludge storage tank 100, and the aeration air prevents decay of the temporarily stored sludge and sludge.

FIG. 7 is a view for explaining a discontinuous aeration section and a heater conduit installed in the microbial reaction tank of FIG. 1, and FIG. 8 is a perspective view excerpted from the heater conduit of FIG. 7

The discontinuous aeration unit 120 includes an aeration mat 121 provided at the bottom of the microbial reaction tank 50 and provided with a plurality of air holes 121a arranged in a matrix form, A sensor 122 for measuring the microbial content concentration and generating a corresponding microbial concentration signal and a discontinuous air pump 123 for varying the supply amount of air supplied to the aeration mat 121 in conjunction with the microbial concentration signal.

The heater conduit 130 is composed of a channel body 132 having a flat rectangular flow path 131 and a planar heating element 133 provided on the bottom of the rectangular flow path 131.

As described above, according to the present invention, since the denitrification tank 30, the nitrification tank 40, the microbial reaction tank 50, the excess sludge sedimentation tank 70, and the advanced treatment tank 80 are sequentially connected, , A restaurant, a farmhouse, and the like, it is possible to effectively treat nitrogen and phosphorus from the wastewater and simultaneously treat the wastewater with mass pollution.

In addition, by employing the discrete aeration section 120 and the microbial circulation processing section 51 provided in the microbial reaction tank 50, the amount of wastewater passing through the microbial support 51f can be varied according to the concentration of the wastewater, And the concentration of saturated oxygen in the microbial reaction tank 50 is made uniform, so that the decomposition activity of microorganisms can be made uniform.

By adopting the heater pipeline 130, the heat insulating layer 52 and the FRP layer 53 which are provided so as to cover the inner circumferential surface of the microorganism reaction tank 50, it is possible to block the cold heat transmitted from the ground during the cold season, The temperature of the wastewater flowing into the reaction tank 50 can be increased to maximize the treatment efficiency by the microorganisms.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10 ... Screen assembly 10a ... inlet pipe
11 ... Collection tank 12 ... Floating impurity conveyance unit
12a ... First roller 12b ... Second roller
12c ... perforated conveyor 12d ... drive motor
13: settling contaminant transferring portion 13a: hopper
13a '... hopper outlet 13b ... collecting tank
13c ... Feed pump 13d ... Weight measuring stage
13e ... Pump operating part 13f ... Hopper valve
13g ... Vibration application part 14 ... Temporary storage tank
20 ... flow rate adjustment tank 30 ... denitrification tank
40 ... nitrification tank 50 ... microorganism tank
51 ... microbial circulation processing section 51a ... front channel
51b ... rear channel 51c ... water pump
51d ... sub duct 51d '... radial wing
51e ... mesh tube 51f ... microorganism carrier
51g ... valve 60 ... carrying part
61 ... return pipe 62 ... pump
70 ... surplus sludge sedimentation stress 80 ... advanced treatment tank
81 ... altitude processing unit 81a ... rim
81b ... first filter box 81b '... first filter
81c ... second filter box 81c '... second filter
90 ... Disinfection discharge tank 100 ... Sludge sludge storage tank
110 ... continuous width base portion 111 ... aeration head
112 ... air pump 120 ... discontinuous width base
121 ... aeration meter 122 ... sensor
123 ... air pump 130 ... heater pipe

Claims (10)

A screen tank (10) for filtering contaminants contained in the incoming wastewater;
A flow rate adjusting tank 20 for feeding the wastewater via the screen tank 10 to a next location in a uniform amount;
A denitrification tank 30 for denitrifying the wastewater transferred from the flow rate regulator 20;
A nitrification tank 40 for first nitrifying contaminants in the wastewater conveyed from the denitrification tank 30;
A microorganism reaction tank 50 for nitrifying organic nitrogen and ammonia nitrogen remaining in the wastewater transferred from the nitrification tank 40 into nitrite nitrogen or nitrate nitrogen;
An excess sludge sedimentation (70) in which the excess sludge remaining in the wastewater after the second nitrification process is settled;
An advanced treatment tank 80 for removing organic matter and nitrogen components remaining in the wastewater conveyed from the excess sludge sedimentation 70 to make treated water;
A disinfecting tank 90 for sterilizing and discharging the treated water transferred from the advanced treatment tank 80 to the outside; And
And a continuous aeration unit 110 for continuously aerating the air to the flow rate adjusting tank 20, nitrification tank 40, advanced treatment tank 80 and disinfection discharge tank 90,
The microbial reaction tank 50 includes at least one microbial circulation processing unit 51 for second nitrifying residual organic nitrogen and ammonia nitrogen in the wastewater via the nitrification tank 40 to nitrite nitrogen or nitrate nitrogen );
The microbial circulation processing unit 51 includes a front pipeline 51a positioned on the front side and a rear pipeline 51b having an inner diameter spreading rearward on the rear side of the front pipeline 51a, A sub duct 51d which is fixed by the radial vane 51d 'on the inner circumferential surface of the rear duct 51b and has an inner diameter narrower toward the front duct 51a; A mesh pipe 51e provided on the rear side of the sub pipe 51d and exposed to the outside of the rear pipe 51b and a microorganism built in the net pipe 51e and capable of decomposing organic substances in the wastewater And a microorganism carrier (51f) for treating the waste water. The method according to claim 1,
An aeration mat 121 provided at the bottom of the microbial reaction tank 50 and having a plurality of air holes 121a for discontinuing the air into the microbial reaction tank 50, And a discontinuous air pump 123 for varying the supply amount of air supplied to the aeration mat 121 in conjunction with the microbe concentration signal. The sensor 122 generates a signal indicative of the concentration of microorganisms in the wastewater, And a discrete aeration unit (120) configured to supply the discrete wastewater. The method according to claim 1,
A channel body 132 having a flat rectangular channel 131 for increasing the temperature of the wastewater and forming a channel through which the wastewater flows between the nitrification tank 40 and the microbial reaction tank 50, Further comprising a heater line (130) composed of a planar heating element (133) provided at the bottom of the rectangular flow path (131). The apparatus according to claim 1, wherein the screen tank (10)
A collection tank 11 formed on the upper side,
A flooded contaminant transfer unit 12 for transferring the floating contaminants contained in the wastewater introduced into the inflow pipe 10a to the collection tank 11,
A sedimented contaminant transferring unit 13 for transferring sedimentation dirt contained in the wastewater introduced into the inflow pipe 10a to the recovery tank 11,
And a temporary storage tank (14) for temporarily storing the wastewater from which suspended dirt and sediment are removed. 5. The apparatus according to claim 4, wherein the sedimented contaminant transfer unit (13)
A hopper 13a installed at the lower side of the screen tank 10 and having an outlet 13a 'for collecting and discharging the sediment,
A collection tank 13b installed on the lower side screen tank 10 of the hopper 13a and collecting sediments passing through the hopper outlet 13a '
A transfer pump 13c for transferring the sediment collected in the collection tank 13b to the collection tank 11,
A weighing stage 13d installed at the bottom of the collecting tank 13b for measuring the weight of the sediment and generating a corresponding weight signal,
And a pump operating part (13e) for operating the transfer pump (13c) when the weight of the sedimentation dump measured at the weighing stage (13d) becomes equal to or greater than a set weight. 6. The apparatus according to claim 5, wherein the settling contaminant transfer unit (13)
And a hopper valve (13f) provided at the hopper outlet (13a ') for selectively opening and closing the hopper outlet (13a'). 7. The apparatus according to claim 6, wherein the sedimented contaminant transfer unit (13)
Further comprising a vibration applying unit (13g) for applying vibration to the hopper (13a) so that the settling dirt can be converged to the hopper outlet (13a '). delete 2. The microorganism circulating system according to claim 1, wherein the microbial circulation processing unit (51)
And a valve (51g) for selectively opening and closing an outlet of the sub-pipe (51d). The apparatus according to claim 1, wherein the advanced treatment tank (80)
A rim 81a mounted on the bottom edge of the advanced treatment tank 80 so that the aeration head 111 is embedded therein and a first filter 82 supported by the rim 81a for primarily removing nitrogen and phosphorus in the wastewater, A first filter box 81b in which the first filter box 81b 'is embedded and a second filter box 81b in which nitrogen and phosphorus remaining in the wastewater passing through the first filter box 81b are stacked on the first filter box 81b A second filter box 81c in which a second filter 81c 'is built in and a rim 81a connected to the excess sludge sedimentation 70 and penetrating the first and second filter boxes 81b and 81c, And a wastewater conveying pipe (81d) extending to an inner space.

Images