KR102009674B1 - Eco-friendly living sewage treatment system - Google Patents

Abstract

The present invention is to provide an eco-friendly domestic sewage treatment system. Water pollution can be prevented by removing organic matter, and substances and coliforms affecting water pollution contained in domestic sewage and various wastewaters, and then discharging the water under the discharged water quality standards. A belt is inclined so that sludge attached to the belt of a conveyor for transporting the contaminants and sediment is not dropped below the belt. By installing a sludge removal rod on a rear end of the conveyor to remove the sludge attached to the belt, the contamination and odor generation around the conveyor can be prevented.

Description

Eco-friendly living sewage treatment system

The present invention relates to an environmentally friendly living sewage treatment system, and more particularly, to remove organic matter, nitrogen, phosphorus and E. coli, etc. contained in domestic sewage and various wastewaters, and then discharge them after treating them under prescribed discharge water quality standards. The present invention relates to an eco-friendly sewage treatment system that can prevent water pollution.

As industrial income increases after industrialization, living standards and leisure activities increase, the amount of living sewage discharged from toilets, baths, showers, laundry rooms, and kitchens in various accommodations, sales facilities, and households increases rapidly. Existing rivers have exceeded their purification capacity. As a result, domestic sewage containing a large amount of organic matter, nitrogen, and phosphorus was discharged to rivers or public waters without being purified, and the water pollution of the streams was increased. Sewage treatment facilities are installed to treat domestic sewage and meet the water quality standards.

Methods of treating various kinds of domestic sewage include physical methods such as screening, sedimentation, flotation and filtration, chemical treatment methods such as neutralization, redox, flocculation and adsorption, and biological methods in which purification is performed according to the culture of microorganisms. The standard activated sludge method that has been used since is a suitable mixture of biological and physical and chemical methods. The sewage stored in the flow control tank is sent to the aeration tank, and the aeration tank supplies oxygen to promote the activity of aerobic microorganisms to decompose organic matter. Finally, the sludge and the treated water are separated into solids by specific gravity in the sedimentation tank.

However, this standard activated sludge method is effective in removing organic matter because it does not provide anaerobic and anaerobic conditions, but has a problem in that nutrients such as nitrogen and phosphorus cannot be removed. On the other hand, as the eutrophication of rivers caused by nutrients such as nitrogen and phosphorus in living sewage or wastewater and the red tide of seawater are emerging as a new environmental problem, water quality due to the concentration of nutrients rather than water quality management by organic concentration Management was recognized as more important, and accordingly, the advanced sewage treatment system for removing nutrients from domestic sewage or wastewater appeared, such as patent registration No. 779036, "biological advanced treatment apparatus for domestic sewage or wastewater."

However, the sewage treatment facilities installed and operated so far, including the above patents, have the following problems. First, because no scum skimmer is installed in the final settler for solid-liquid separation of the activated sludge mixed liquor produced in the bioreactor, scum appears on the top of the final settler and algae such as moss are generated. Not only can there be a problem that can be worsened, but also to remove them by using manipulators such as gardening, there is a problem that the operating efficiency of the sewage treatment plant is low.

Secondly, because the conveyor belt for transporting the contaminants and sediments is installed horizontally, sludges of the contaminants and sediments which are transported on the belt are attached, so that the sludge is removed from the belt when the belt is located at the lower side while the belt is rotating. Since it is separated and deposited on the floor, it is not only good for aesthetics, but also contaminates around the conveying conveyor and causes odors. There is a problem that manpower for removing the sludge is required.

Third, after the final effluent is filtered in the filtration tank, UV disinfection is performed without separate tank and effluent transfer pump, and then the treated water is discharged directly to the river. Therefore, when the water level of the river rises in rainy weather, the rainwater goes to the sewage treatment plant. There is a problem of backflow.

The present invention has been made in order to solve the above problems, the object of the present invention is to include the substances and E. coli and the like that affects the organic matter and water pollution contained in domestic wastewater and various wastewater (hereinafter referred to as 'sewage') It is to provide an environmentally friendly living sewage treatment system that can prevent the water pollution of the stream by removing and treating the discharged water below the prescribed discharge water quality standards.

Another object of the present invention, the sludge attached to the belt of the conveying conveyor for transporting contaminants and sediment is attached to the belt by installing a sludge removal rod on the rear end of the conveying conveyor while inclining the belt so that the sludge is not dropped to the lower part of the belt. It is to provide an environment-friendly sewage treatment system that can prevent contamination and odor generation around the conveying conveyor by removing the sludge.

Eco-friendly domestic sewage treatment system according to the present invention, the sedimentation to remove the contaminants and sediment while the sewage flows into the sedimentation tank; A flow rate adjusting tank for allowing the sewage introduced from the settlement to stay in the adjusting tank, and an outflow pump is operated to pump out a predetermined amount of sewage from the adjusting tank; An initial settling battery including a first distribution tank into which sewage flows from the flow rate adjustment tank, and two first settling tanks into which sewage distributed in the first distribution tank flows; A second distribution tank into which sewage flows from the initial settling tank, two bioreactors into which the sewage distributed from the second distribution tank flows, and a blower for supplying air to the lower portions of the bioreactors, and a blower A bioreactor configured to allow air blown from the air to be discharged through an acid pipe to be supplied to a bioreactor; A final sedimentation battery including a third distribution tank into which sewage flows from the bioreactor, and two final sedimentation tanks into which sewage distributed in the third distribution tank flows; A filtration facility tank including a manhole in which the sewage introduced from the final sedimentation tank stays for a predetermined time and a filtration tank for filtering sewage flowing from the manhole; Disinfection tank equipped with ultraviolet (UV) disinfection facility, to sterilize E. coli from the sewage introduced from the filtration tank to discharge to the outside; And a fourth dispensing tank into which the fresh sludge flowed out by the operation of the fresh sludge pump from the lower part of the initial settling tank, and two thickening tanks into which the fresh sludge flows from the fourth dispensing tank, and from the lower part of the concentrating tank to the operation of the concentrated sludge pump. A sludge thickening tank having a thickening sludge storage tank into which the concentrated sludge flowing out is introduced; And a dehydrator for dehydrating and discharging water from the excess sludge pumped by the sludge discharge pump from the concentrated sludge storage tank.

Preferably, in the sedimentation tank, the fine screen and the fine wood screen are sequentially installed in the vertical direction with respect to the direction in which the sewage flows in and out, and the sedimentation tank is divided into three, and the fine screen has a long length or a bulky contaminant to be filtered out. The fine wood screen is removed, and the contaminants passing through the fine screen are filtered out and removed. Between the fine screen and the fine wood screen, an acupuncture lifter is configured to lift and remove the sediment accumulated in the lower part of the tank.

Preferably, the contaminants and the sediment removed from the fine screen and the fine wood screen of the sedimentation tank are transported by the conveying conveyor belt and dropped into an arm roll box disposed at the rear end of the belt, and the conveying conveyor belt is processed. It is installed to have a predetermined inclination so that the height is lowered toward the rear end, and the sludge removal rod is installed at the rear end of the conveying conveyor to remove the impurities and sediment attached to the belt.

Preferably, the initial settling tank has a circular shape in plan view, and a cylindrical lower part is formed in a conical shape, and a lower end portion of the cylindrical shape and a conical shape are provided with a first blade which is rotated by a motor. The settled raw sludge is agitated by the rotation of the first blade, and the raw sludge stirred while rotating is discharged through the lowermost part of the cone-shaped portion of the initial settling tank by the operation of the fresh sludge pump to the fourth distribution tank of the sludge concentration tank. The living sewage on the top of the fresh sludge inside the initial settling tank is introduced into the second distribution tank.

Preferably, a predetermined amount of polyaluminum chloride is dropped to remove phosphorus from the sewage flowing out of the bioreactor, so that the phosphorus-free sewage is introduced into the third distribution tank of the final settler.

Preferably, the final settling tank is cylindrical in planar shape, the lower portion of the cylindrical shape is formed in a conical shape, and the lower end of the cylindrical shape and the conical shape are provided with a second blade which is rotated by a motor, and settles in the lower part of the final settling tank. The concentrated sludge is stirred by the rotation of the second blade, and the concentrated sludge that is stirred while rotating is discharged from the final settling tank by the operation of the return sludge pump or the excess sludge pump and transferred to the bioreactor or the thickening tank, and the inside of the final settling tank is In sewage, the sewage at the top of the concentrated sludge is introduced into the manhole.

Preferably, when the concentrated sludge precipitated in the final settling tank is transferred to the bioreactor, the transfer pipe connected to the thickening tank is closed, and when the concentrated sludge is transferred to the thickening tank, the transfer pipe connected to the bioreactor is closed and settled in the final settling tank. 75-95% of the concentrated sludge is transferred to the bioreactor.

Preferably, a rubber bar-shaped sludge collector is installed on the top of the final settling tank, and the floating sludge floating on the upper portion of the sewage flowing into the final settling tank is removed and collected by the scum box.

Preferably, the fresh sludge introduced into the thickening tank stays in the thickening tank for a predetermined time, and the backwash water discharged after backwashing the desorbed water and the filtration tank desorbed from the dewatering sludge is a sedimentation tank. Configured to be transported.

Eco-friendly domestic sewage treatment system according to the present invention, since the scum skimmer and scum transfer pump and the transfer pipe is installed in the final sedimentation tank to prevent the generation of algae on the top of the final sedimentation tank to ensure a stable treatment water quality and increase the efficiency of treatment plant operation. have.

In addition, since the belts of the contaminant and sediment transport conveyors are not installed horizontally but are inclined, sludge removal rods for removing the sludge attached to the belts are installed at the rear end of the conveying conveyor so that the sludge does not adhere to the belts. Since it is collected directly into the box, the sludge attached to the belt does not fall when the belt is located at the lower part while the belt rotates, so that the area around the conveying conveyor is not only aesthetically clean but also prevents contamination and odor caused by sludge in the lower part of the conveying conveyor. It does not need to be cleaned to remove the deposited sludge.

In addition, after the sewage is finally treated and filtered, E. coli is sterilized in a disinfection tank equipped with an ultraviolet (UV) disinfection facility and a effluent transfer pump, and the treated water is discharged through the effluent transfer pump. It is possible, and even if the water level in rainy weather increases, rainwater does not flow back to the sewage treatment plant.

1 is a view schematically showing a treatment system of the sewage treatment system according to the present invention.
2 is a view showing a conveying conveyor.

The biggest technical feature of the eco-friendly sewage treatment system according to the present invention is to install the sludge and sediment transport conveyor to be inclined and install a sludge removal rod to prevent sludge from adhering to the belt, thereby causing contamination and odors around the transport conveyor due to sludge. It has been designed to prevent the occurrence of water and to completely treat organic matter, water pollutants and E. coli in the sewage so that only the treated water below the prescribed discharge water quality standard is discharged through the discharge water transfer pump so that it does not flow back even when the water level rises in rainy weather. Is that.

Living sewage treatment system according to the present invention is a sedimentation basin (10) for removing contaminants and sediment from the sewage, flow adjustment tank 20 for supplying a constant flow rate, the first settling battery for removing the suspended substances contained in the introduced sewage (30), bioreaction paper (40) to remove contaminants from sewage while the microorganisms inhabit, final settler (50) to settle sludge produced by the reaction of microorganisms to obtain clean treated water, more stable treatment through filtration facilities Filtration tank 60 to secure water, disinfection tank 70 to sterilize E. coli before discharge of treated water, sludge concentration tank 80 to increase the dewatering efficiency by gravity concentration of fresh sludge and surplus sludge. After mixing and flocculating the sludge and the flocculant, a dehydrator 90 for separating solids and water is included as a basic configuration.

The sedimentation basin 10 is a dead space in the tank caused by the deposition of sediment in the sewage treatment process and sludge treatment process by removing foreign substances (clumps and sediments) mixed in the sewage using the screen, and wear of the pump And it is a facility for preventing the occurrence of problems, such as reduced efficiency and the piping is closed. While the sewage flows into the sedimentation tank 11 and removes contaminants and sediment, the sedimentation tank 10 has a fine screen 12 and a fine wood screen in a vertical direction with respect to the direction in which the sewage flows in and out. 13) are sequentially installed so that the sedimentation tank 11 is divided into three.

The fine screen 12 having a length of about 20 mm is removed by filtering long or bulky impurities, and the fine screen 13 having a distance of about 5 mm is passed through the fine screen 12 without being filtered out. This filter is removed and removed, between the fine screen 12 and the fine wood screen 13, the saliva lifting device (not shown) is to remove and remove the sediment, such as sand and sand accumulated in the lower part of the silt tank (11). . The sedimentation tank 11 is preferably installed to be able to cope with the two branches are installed even if the sudden inflow of sewage increases. The fine screen 12 and the fine wood screen 13 are provided with a vibration suppressor (not shown) for removing contaminants while reciprocating along the screen, and between the fine screen 12 and the fine wood screen 13, an acupuncture lifting device. (Not shown) is installed, the vibration damper and the sedimentation lifting device is not a characteristic configuration of the present invention only because it is a device that is widely used for removing foreign matters (cold matter and sediment) in rivers or dams as well as sewage treatment plants Is omitted.

The fines and the sediment removed from the fine screen 12 and the fine wood screen 13 of the sedimentation tank are transported by the belt of the conveying conveyor 14 installed on the side of the sedimentation tank 11 and placed in the rear end of the belt. The arm roll box 15 is dropped and processed. The conveying conveyor 14 belt is installed to have a predetermined inclination so that the height becomes lower toward the rear end, and a sludge removing rod 141 for removing the impurities and sediment attached to the belt is installed at the rear end of the conveying conveyor 14. In this way, the sludges and sediments attached to the belt are removed while the contaminants and sediments transported on the belt are dropped onto the arm roll box 15. Therefore, the sludge attached to the belt does not fall when the belt is positioned at the lower part while the belt rotates, so that the surroundings of the conveying conveyor are not only aesthetically clean but also prevent contamination and odor caused by sludge in the lower part of the conveying conveyor 14, There is no need to clean it separately to remove the deposited sludge.

The flow rate adjustment tank 20 is a facility for supplying the sewage flow rate introduced from the settlement 10 to the initial settler 30 constantly, and improves the water treatment efficiency in the subsequent treatment process by equalizing the sewage flow rate with a large fluctuation in time. It is facility to let. The sewage introduced from the settling basin 10 stays in the adjustment tank 21, and the outflow pump 22 is operated to pump a certain amount of sewage from the adjustment tank 21 to flow out to the initial settling battery 30. It is preferable that 20) is provided with two places, and also a plurality of outflow pumps 22 may be provided so that even if the sewage inflow suddenly increases, it is possible to cope with it.

The first settler (30) is a facility for improving the water treatment efficiency by reducing the inflow load in the bioreactor (40), which is a subsequent treatment process by removing the suspended solids contained in the inflow sewage by gravity sedimentation, flow rate adjustment tank (20) The first distribution tank 31 into which the sewage flows from and the first sedimentation tank 32 into which the sewage distributed in the first distribution tank 31 flows are provided, and the sewage water is discharged from the initial sedimentation tank 32 for a predetermined time. During this time, the precipitated solids are allowed to settle. The first dispensing tank 31 is a facility for distributing the sewage flowing into the two first settling tanks 32 by opening and closing the gate valve, and opening only to one of the first settling tanks 32 to appropriately set the first settling tank 32. Maintain the water level.

The initial settling tank 32 has a circular plane, a cylindrical lower part is formed in a conical shape, and a first blade 33 which is rotated by a motor (not designated) is installed at the lower end part and the cylindrical part of the cylindrical part. In the raw sedimentation tank 32, the raw sludge (raw sludge means the sludge containing no microorganisms in the sludge) is stirred by the rotation of the first blade 33, and the raw sludge is stirred while rotating. The sludge flows out through the lowermost part of the cone-shaped portion of the initial settling tank 32 by the operation of the fresh sludge pump 34 and is transferred to the fourth distribution tank 81 of the sludge concentration tank. The sewage on top of the fresh sludge is introduced into the second distribution tank 41 of the bioreactor.

If the height of fresh sludge deposited in the initial settling tank 32 is high, the load of the bioreactor 42, which is a post-process, is increased due to the decrease in the treatment efficiency in the initial settling tank 32, It is desirable to adjust the frequency at which the fresh sludge is discharged by measuring the height of the fresh sludge settled and visually observing the state of the fresh sludge. Therefore, the fresh sludge pump 34 is operated not intermittently but intermittently, and it is preferable that the raw sludge settles in the initial settling tank 32 to maintain 20 to 30% of the height of the initial settling tank 32. . If the raw sludge has been settled too low in the initial settling tank 32, since the sewage (treated water) is introduced into the thickening tank 82 together with the fresh sludge, there is a concern that the effective capacity of the thickening tank 82 may be reduced. .

The bioreactor 40 is a facility for removing contaminants from sewage while inhabiting microorganisms, and is distributed in the second distribution tank 41 and the second distribution tank 41 into which sewage flows from the initial settling tank 32. It is provided with two bioreactors 42 into which sewage flows, a plurality of blowers 43 for supplying air to the lower part of each bioreactor 42, and a stirrer for stirring the sludge. The air blown in 43 is exhausted through the membrane disk diffuser and supplied to the bioreactor 42. The second distribution tank 41 is a facility for distributing the sewage flowing into the two bioreactors 42 by opening and closing the gate valve, and opening only to one of the bioreactors 42 to titrate the bioreactor 42. Maintain the water level.

The bioreactor 42 changes the activity of the microorganisms according to the change in water temperature and inflow load according to the season, so in order to maintain the optimum treated water quality, the microorganisms should be optimized according to these changes. Therefore, the bioreactor 42 is equipped with various sensors for measuring the main operating factors such as dissolved oxygen (DO), pH, temperature, the amount of microorganisms (MLSS, Mixed Liquor Suspended Solids) that decompose organic matter. Should be. When the water temperature of the bioreactor 42 is increased, the activity of microorganisms is increased and the sludge precipitation is enhanced, and the treatment water quality is improved. The optimum temperature is 20 to 30 ° C. Activity decreases by about 2 times, and organic substance is not removed when the temperature of sewage is 5 degrees C or less. In addition, when the DO concentration is low, the nitrogen removal efficiency is lowered.

As microorganisms decompose and consume organic matter, the concentration change of MLSS involved in the treatment is the most important driving factor of the bioreactor. As the MLSS concentration increases as the temperature increases, the activity of the microorganisms increases, so the MLSS concentration should be operated relatively low. On the contrary, the MLSS concentration should be increased during the winter season when the microorganism activity decreases.

In order to remove phosphorus from the sewage flowing out of the bioreactor 42, a drop of liquid polyaluminum chloride, a coagulant, is dropped by a predetermined amount, so that the sewage from which phosphorus is removed is discharged into the third settling tank of the final settler (51). ) Will flow into.

The final settler 50 is a facility for sedimenting the activated sludge produced by the reaction of the microorganisms in the bioreactor 42 and separating the sludge from the bioreactor 42 while obtaining clean treated water. It is comprised with the 3rd distribution tank 51 and two final sedimentation tanks 52 which the sewage distributed by the 3rd distribution tank 51 flows in into. The third distribution tank 51 is a facility for distributing the sewage flowing into the two final sedimentation tanks 52 by opening and closing the gate valve, and opening only to one final sedimentation tank 52 to properly titrate the final sedimentation tank 52. Maintain the water level.

The final settling tank 52 is cylindrical in planar shape, the lower part of the cylindrical shape is formed in a cone shape, and the second blade 53, which is rotated by a motor (not designated), is installed at the lower end portion and the conical shape of the cylindrical shape. The concentrated sludge (concentrated sludge contains microorganisms) precipitated at the bottom of the final settling tank 52 is stirred by the rotation of the second blade 53, and the concentrated sludge stirred while rotating is the final settling tank 52. Outflow from the bioreactor 42 or the concentration tank 82, the sewage in the upper portion of the concentrated sludge in the final settling tank 52 is introduced into the manhole (61).

The concentrated sludge precipitated in the final settling tank 52 contains microorganisms, and the concentrated sludge settled in the final settling tank 52 is required because the amount of microorganisms (MLSS) decomposing organic matters in the bioreactor 42 should be maintained appropriately. 75 to 95% of the sludge is returned to the bioreactor 42 and the remaining excess sludge is transferred to the concentration tank 82 is final treatment, the return sludge pump 54 is operated to concentrate the sludge settled in the final settling tank 52 When the gas is returned to the bioreactor 42, the transfer pipe connected to the concentration tank 82 is closed, and the concentrated sludge deposited in the final settling tank 52 is transferred to the concentration tank 82 by the operation of the excess sludge pump 55. At this time, the transfer pipe connected to the bioreactor 42 is closed.

In addition, a rubber bar-shaped sludge skimmer is installed on the upper part of the final settling tank 52 to remove floating sludge and lichens, and the floating sludge floated on the upper part of the sewage flowing into the final settling tank 52. It is configured to remove moss and collect by scum box.

Filtration tank 60 is a facility for filtering the treated water to ensure a more stable treatment water, the manhole 61 for the sewage flow from the final sedimentation tank 52 to stay for a certain time, and the manhole equipped with a filtration facility It is comprised by the filtration tank 62 which filters the sewage which flows in from 61. As shown in FIG. The filtration tank 62 is periodically backwashed to clean the filtration facility. At this time, the pumped water is used to pump the effluent, and the backwash water discharged after the backwash is transferred to the sedimentation tank 11 through the transfer pipe. .

Disinfection tank 70 is a facility for sterilizing E. coli before the discharge of the treated water by equipped with ultraviolet (UV) disinfection facility, is configured to sterilize E. coli from the sewage introduced from the filtration tank 62 and discharged to the outside, discharge water transfer pump (Not shown) is installed so that even if the water level in the rainy weather rises, the discharged treated water and river water does not flow back.

The sludge thickening tank 80 is a facility for increasing the dewatering efficiency by gravity concentrating the fresh sludge and surplus sludge. The sludge thickening tank 80 is introduced from the lower part of the initial settling tank 32 by the operation of the fresh sludge pump 34. The four-distribution tank 81 and the two concentration tanks 82, in which the fresh sludge flows from the fourth distribution 81, and the concentrated sludge discharged by the operation of the concentrated sludge pump 83 from the lower portion of the concentration tank 82. It is configured to include a concentrated sludge storage tank 84 is introduced. The fourth distribution tank 81 is a facility for distributing the sewage flowing into the two concentration tanks 82 by opening and closing the gate valve. The fourth distribution tank 81 is opened to only one concentration tank 82 to maintain an appropriate level of the concentration tank 82. Let's do it.

The dehydrator 90 is a facility for mixing and flocculating the concentrated sludge and flocculant to separate solids and water. The dehydrator 90 dehydrates water from the excess sludge pumped by the sludge discharge pump 85 from the concentrated sludge reservoir tank 84 to produce a cake ( The sludge in the form of cake is discharged to the hopper 91 and then taken out to the outside.

After the fresh sludge flowing into the thickening tank 82 stayed in the thickening tank 82 for a predetermined time, the supernatant at the top of the fresh sludge, the desorption water desorbed from the dehydrator 90 and the filtering tank 62 were backwashed. The backwash water discharged afterwards is configured to be transferred to the sedimentation tank 11 through a transfer pipe. The structure of the concentration tank 82 is the same as the initial settling tank 32 and the final settling tank 52.

The above description illustrates the present invention by way of example, and the embodiments disclosed in the specification are not intended to limit the technical spirit of the present invention, but to describe the present invention, so that those skilled in the art to which the present invention pertains can understand the present invention. Various modifications and variations will be possible without departing from the spirit of the technology. Therefore, the protection scope of the present invention is to be interpreted by the matter described in the claims, it should be interpreted that the technical matters within the scope equivalent to that included in the scope of the present invention.

10: settler 11: the settler
12: detail screen 13: fine wood screen
14: transfer conveyor 15: arm roll box
20: flow adjustment tank 21: adjustment tank
22: outflow pump
30: initial settler 31: first division
32: first settling tank 33: the first blade
34: fresh sludge pump
40: bioreaction 41: second distribution tank
42: bioreactor 43: blower
50: final settler 51: third division tank
52: the final settling tank 53: the second blade
54: return sludge pump 55: surplus sludge pump
60: filtration equipment tank 61: manhole
62: filtration tank
70: disinfectant
80: sludge concentration tank 81: fourth distribution tank
82: thickening tank 83: concentrated sludge pump
84: concentrated sludge storage tank 85: sludge discharge pump
90: dehydrator 91: hopper

Claims (11)

Sedimentation basin which removes contaminants and sediments while sewage flows in and stays in the sedimentation tank;
Two sewage flow adjusting tanks, wherein the sewage flowing from the settling basin stays in the adjusting tank, and the outflow pump is operated to pump out a predetermined amount of sewage from the adjusting tank;
An initial settling battery including a first distribution tank into which sewage flows from the flow rate adjustment tank, and two first settling tanks into which sewage distributed in the first distribution tank flows;
A second distribution tank into which sewage flows from the first settling tank, two bioreactors into which the sewage distributed from the second distribution tank flows, and a blower for supplying air to the lower portions of the bioreactors, and a blower A bioreactor configured to allow air blown from the air to be discharged through an acid pipe to be supplied to a bioreactor;
A final sedimentation battery including a third distribution tank into which sewage flows from the bioreactor, and two final sedimentation tanks into which sewage distributed in the third distribution tank flows;
A filtration facility tank including a manhole in which the sewage introduced from the final settling tank stays for a predetermined time, and a filtration tank for filtering sewage flowing from the manhole;
Disinfection tank equipped with ultraviolet (UV) disinfection facility, to sterilize E. coli from the sewage introduced from the filtration tank to discharge to the outside;
A fourth distribution tank into which the fresh sludge flowed out by the operation of the fresh sludge pump from the lower part of the initial settling tank, and two thickening tanks into which the fresh sludge flows from the fourth distribution, are provided in operation of the concentrated sludge pump A sludge thickening tank having a concentrated sludge storage tank into which the concentrated sludge flowing out is introduced;
A dehydrator for dehydrating and discharging water from the excess sludge pumped by the sludge discharge pump from the concentrated sludge storage tank;
It is configured to include,
The sedimentation tank, the fine-screen and the fine-wood screen is installed in the vertical direction with respect to the direction in which the sewage flows in and out, the sedimentation tank is divided into three,
In the fine screen, long or bulky contaminants are removed by filtration, and in the fine wood screen, the contaminants passing through the fine screen are filtered out. Configured to lift and remove accumulated sediment,
The scum and scum removed from the fine screen and the fine wood screen of the sedimentation tank are transported by a conveying conveyor belt to be dropped into an arm roll box disposed at the rear end of the belt and processed.
The conveying conveyor belt is installed to have a predetermined inclination so that the height becomes lower toward the rear end, the sludge removal rod for removing the impurities and sediment attached to the belt is installed at the rear end of the conveying conveyor,
The initial settling tank is circular in shape, the lower portion of the cylindrical shape is formed in a cone shape, the lower end portion and the cylindrical portion of the cylindrical first portion is rotated by a motor is installed, the raw precipitated in the lower portion of the initial settling tank The sludge is agitated by the rotation of the first blade, the raw sludge which is stirred while rotating is discharged through the lowermost part of the conical part of the initial settling tank by the operation of the fresh sludge pump, and is transferred to the fourth distribution tank of the sludge concentration tank. The sewage above the fresh sludge inside the initial settling tank is introduced into the second distribution tank,
The fresh sludge pump, eco-friendly sewage treatment system, characterized in that the operation is operated to intermittently operate so that the height of the raw sludge precipitated in the first settling tank maintains 20 to 30% of the height of the first settling tank.
delete delete delete delete The method of claim 1,
The bioreactor is environmentally friendly sewage treatment system, characterized in that the sensor is installed for measuring the amount of dissolved oxygen (DO) and pH and the amount of microorganisms (MLSS).
The method of claim 1,
Eco-friendly living sewage treatment, characterized in that by dropping a predetermined amount of polyaluminum chloride to remove phosphorus from the sewage flowing out of the bioreactor, the sewage from which the phosphorus is removed flows into the third distribution tank of the final settler system.
The method of claim 1,
The final settling tank is cylindrical in shape, the lower portion of the cylindrical shape is formed in a conical shape, the second lower blade and the cone-shaped portion of the cylindrical rotation is installed by the motor, the concentrated sludge deposited in the lower part of the final settling tank Is stirred by the rotation of the second blade,
The concentrated sludge which is stirred while rotating is discharged from the final settling tank by the operation of the return sludge pump or the excess sludge pump, and is transferred to the bioreactor or the thickening tank,
Environmentally friendly sewage treatment system, characterized in that the sewage in the upper portion of the concentrated sludge in the final settling tank is introduced into the manhole.
The method of claim 8,
When the concentrated sludge precipitated in the final settling tank is transferred to the bioreactor, the transfer pipe connected to the thickening tank is closed, and when the concentrated sludge is transferred to the thickening tank, the transfer pipe connected to the bioreactor is closed.
Eco-friendly domestic sewage treatment system, characterized in that 75 to 95% of the concentrated sludge precipitated in the final settling tank is to be transferred to the bioreactor.
The method of claim 1,
A rubber bar-shaped sludge collector is installed on the upper part of the final sedimentation tank, and an eco-friendly living sewage treatment system characterized in that it is collected as a scum box by removing the floating sludge floating on the upper part of the sewage flowing into the final sedimentation tank.
The method of claim 1,
The fresh sludge introduced into the thickening tank stays in the thickening tank for a predetermined time, and the supernatant water in the upper portion of the fresh sludge, the desorbed water removed from the dehydrator and the backwashing water discharged after backwashing the filtration tank are transferred to the sedimentation tank. Eco-friendly sewage treatment system, characterized in that configured to.

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