KR102324595B1 - Septic tank odor removal system connected to the internal transfer line - Google Patents

Abstract

A septic tank odor removing system according to an embodiment of the present invention can include: an anaerobic tank into which raw water and returned sludge are introduced; an anoxic tank for converting nitrate nitrogen transferred from the anaerobic tank into nitrogen gas; an aeration tank connected to the anoxic tank and storing highly active microorganisms; a sedimentation tank placed at the rear end of the aeration tank; an internal return line for transferring some sludge of the aeration tank to the anoxic tank; and an odor removing device connected to the anaerobic tank and the internal return line to mix the sludge with an odor introduced from the anaerobic tank.

Description

Septic tank odor removal system connected to the internal transfer line

The present invention relates to an odor removal device connected to an internal conveyance line.

In general, the odor removal device uses an adsorption method using activated carbon, a washing method using water, or a chemical deodorization method. The adsorption method using activated carbon has a disadvantage in that, when a certain time elapses after installation, contaminants are attached to the activated carbon, resulting in low efficiency, and frequent replacement is required. In addition, the chemical deodorization method has a disadvantage in that it is difficult to recycle it as land improvement manure, animal feed, etc. after processing organic matter such as food. In view of these disadvantages, a washing method using water is commonly used as a method for reducing odors.

However, it is difficult to remove all the odor-causing components of various components using water, and the odor-removing effect is also insignificant.

It was devised based on the above technical background, and the present invention is to provide an odor removal device that is connected to the internal transport duct and can more easily remove the bad smell of sludge transferred from the inside of the internal transport duct.

The septic tank malodor removal system according to an embodiment of the present invention includes an anaerobic tank into which raw water and return sludge are introduced, an anaerobic tank that converts nitrate nitrogen transferred from the anaerobic tank into nitrogen gas, and an aeration tank connected to the anaerobic tank and storing highly active microorganisms , a settling tank located at the rear end of the aeration tank, an internal return line for transferring some sludge from the aeration tank to the anaerobic tank, and a malodor removal device connected to the anaerobic tank and the internal return line to mix the sludge with the malodor introduced from the anaerobic tank can do.

It may further include a blower connected to the anaerobic tank, and a duct for connecting the odor removal device and including a flow nozzle.

It may further include a conveying duct connected to the odor removal device near the discharge unit, and a mixing unit connecting the conveying duct and the duct to mix the malodorous gas introduced from the anaerobic tank and the malodorous gas returned through the conveying duct. have.

The flow nozzle is connected to the rear end of the mixing unit, a first flow nozzle connected to a second duct connected to the blower, and a third duct connected to the front end of the mixing unit and connected to the odor removal device. 2 It may include a flow nozzle.

The first flow nozzle may include a guide part installed inside the second duct, a guide part located outside the second duct, connected to the guide part and the connection part via the connecting part, and an adjustment part for controlling the movement of the guide part. have.

The malodor removal device connected to the internal conveying duct according to an embodiment of the present invention can more easily remove odors generated from the sludge being transferred by being connected to the internal conveying duct.

1 is a view showing an odor removal device connected to an internal return line of a septic tank according to an embodiment of the present invention.
FIG. 2 is a view showing the mixing unit shown in FIG. 1 .
3 is a view showing a cross-section of a supply pipe positioned inside the odor removal device shown in FIG. 1 .

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof. Further, when a part of a layer, film, region, plate, etc. is said to be “on” another part, this includes not only the case where the other part is “directly on” but also the case where there is another part in between. Conversely, when a part of a layer, film, region, plate, etc. is said to be “under” another part, this includes not only cases where it is “directly under” another part, but also a case where another part is in between.

1 is a view showing an odor removal device connected to an internal transport line of a septic tank according to an embodiment of the present invention.

Referring to FIG. 1 , the septic tank odor removal system 200 may include a septic tank 100 and a odor removal device 60 connected to the septic tank 100 .

The septic tank 100 may include an anaerobic tank 10 , an anoxic tank 20 , an aeration tank 30 and a settling tank 40 . In addition, the septic tank 100 may include a flow rate adjustment tank 80 connected to the anaerobic tank 10 . The purification of wastewater is a method capable of biologically removing phosphorus using the concept of phosphorus release and intake under anaerobic and aerobic conditions.

The anaerobic tank 10 is an anaerobic region in which dissolved oxygen and nitrogen active nitrogen do not exist, and functions to discharge phosphorus from wastewater. The anaerobic tank 10 may be connected to the flow rate adjustment tank 80 through a odor collecting pipe.

The flow rate adjustment tank 80 is provided to equalize the flow rate and water quality load of the inflow sewage to reduce the capacity of the subsequent treatment facility. The flow rate adjustment tank 80 is connected to the anaerobic tank 10 as described above. Accordingly, the malodorous gas generated from the inflow sewage into the flow rate control tank 80 may be introduced into the anaerobic tank 10 through the malodor collecting pipe.

The anoxic tank 20 may remove nitrogen through a denitrification process of nitrate nitrogen generated in the aeration tank 30 . For example, the interior of the anaerobic tank 20 is maintained at a low pressure state to maintain an oxygen-deficient state, thereby inducing a smoother catabolism.

The aeration tank 30 may generate nitrate nitrogen through nitrification. Nitric acid nitrogen can be removed through the denitrification process.

The anaerobic tank 20 and the aeration tank 30 may be connected via an internal return line 70 .

The settling tank 40 may precipitate contaminants or various organic substances included in the fluid and discharge the fluid to the outside. The settling tank 40 may be installed at the rear end of the aeration tank 30 and installed before the introduced wastewater is discharged to the outside. As another example, the sedimentation tank 40 may be installed before the inflowing wastewater is subjected to advanced treatment to primarily remove contaminants from the introduced fluid and guide it to the anaerobic tank 10 .

The fluid may be conveyed and supplied from the aeration tank 30 to the anoxic tank 20 through the internal conveyance line 70 . The returned fluid is a mixture of microorganisms that decompose and remove organic matter.

The first supply line 71 is connected to the inner return line 70 to guide the fluid flowing into the inner return line 70 to the odor removal device 60 . At this time, the first supply line is connected to the second supply line 72 via the supply pump 76 to transmit the fluid, and to inject the fluid into the odor removal device 60 through the nozzle unit 73 . can

For example, the nozzle unit 73 is connected to the second supply line 72 and a plurality of nozzles 73a are formed. Through this, the odor can be removed by spraying the fluid inside the odor removal device 60 to contact and/or mix the odor gas. In the septic tank 100, the most odorous material may be a sulfur compound such as hydrogen sulfide, etc., and the sulfur compound has a property of being well soluble in water, so it is possible to remove the odor gas by spraying water. Because it is mixed, the odor gas can be removed more efficiently.

The first duct 52 is connected to the anaerobic tank 10 and the flow rate adjustment tank 80, and the odor gas generated in the anaerobic tank 10 and the flow rate adjustment tank 80 through the blower 53 is transferred to the second duct 54. can be transmitted

The second duct 54 is connected to the mixing unit 55, mixes the returned malodorous gas and the malodorous gas transferred from the anaerobic tank 10, and supplies it to the malodor removal device 60 through the third duct 56. will do

The inner duct 58 is connected to the third duct 56 and supplies malodorous gas into the malodor removal device 60 . In this case, the malodorous gas may be supplied by adjusting the supply speed of the malodorous gas so that the malodorous gas stays in the malodor removal device 60 and is easily mixed with the injected fluid.

The malodor removal device 60 may include a blower 61 and a moisture removal unit 62 . The blower 61 may help to more easily mix the sprayed fluid with the malodorous gas while circulating it in the malodor removal device 60 . The blower 61 is located above the nozzle 73 and mixes the odor gas discharged from the inner duct 58 with the sprayed fluid.

The moisture removal unit 62 removes moisture from the air from which the odor component is removed from the odor gas and discharges the purified air to the outside. For example, when the inside of the odor removal device 60 is filled with air from which odor substances have been removed, the internal pressure increases and is naturally discharged through the moisture removal unit 62 to the outside. At this time, the discharge unit of the odor removal device 60 When the gas sensor 63 is located nearby and odor substances remain, the odor substances can be removed by transferring them back to the odor removal device 60 through the conveying duct 57 .

The fluid drain pipe 74 may be connected to the lower portion of the odor removal device 60 to supply a fluid mixed with the odor gas collected in the lower portion of the odor removal device 60 to the anoxic tank 20 . The fluid filter unit 75 may be connected to the fluid drain pipe 74 to filter foreign substances introduced in the process of mixing the malodorous gas and the fluid in the odor removal device 60 , and supply the fluid to the anoxic tank 20 . Through this circulation process, as the microorganisms in the fluid come into frequent contact with oxygen, the microorganisms are continuously activated, so that the odorous substances in the malodorous gas can be more easily removed.

FIG. 2 is a view showing the mixing unit shown in FIG. 1 , and FIG. 3 is a view showing a cross-section of a supply pipe located inside the odor removal device shown in FIG. 1 .

2 and 3 , the second duct 54 , the third duct 56 , and the conveying duct 57 may be connected to the mixing unit 55 .

A first flow nozzle 541 may be connected to an end side of the second duct 54 . The area of the discharge area of the first flow nozzle 541 may be changed according to the amount of the odor gas supplied by the blower 53 . For example, when the supply amount is large, the first flow nozzle 541 may move upward to form a relatively large area of the discharge area. A first protrusion 54a may be provided inside the second duct 54 facing the first flow nozzle 541 . At this time, the pressure of the malodorous gas pressurized by the movement path formed by the first flow nozzle 541 and the first protrusion 54a is lowered, and the temperature of the malodorous gas is also lowered, thereby increasing the gas solubility. In addition, the conveying malodorous gas moving to the conveying duct 57 by the low pressure and moving rapidly moving malodorous gas may be naturally injected into the mixing unit 55 . That is, the faster the malodorous gas supplied from the first duct 52 is supplied, the greater the mixing amount of the transported malodorous gas.

A second flow nozzle 561 may be connected to the third duct 56 . A second protrusion 56a may be provided inside the third duct 56 facing the second flow nozzle 561 . For example, the odor gas mixed in the mixing unit 55 is reduced in pressure once more by the movement path formed by the second flow nozzle 561 and the second protrusion 56a of the third duct 56, and the temperature It could also be lower.

The first flow nozzle 541 and the second flow nozzle 561 may include guide parts 541a and 561a, connection parts 541b and 561b, and adjustment parts 541c and 561c. The guide parts 541a and 561a are positioned inside the second duct 54 and the third duct 56 , and may be connected to the adjusting parts 541c and 561c via the connecting parts 541b and 561b.

By adjusting the weight of the adjusting units 541c and 561c, the vertical movement of the first flow nozzle 541 and the second flow nozzle 561 can be adjusted. Also, the guide portions 541a and 561a of the first flow nozzle 541 and the guide portions 541a and 561a of the second flow nozzle 561 may have different angles. That is, when the air volume is increased in the mixing unit 55 and transmitted to the third duct 56, the temperature and pressure of the mixed malodorous gas are changed. By forming a small area of the discharge area of the odor removal device 60 , the pressure and temperature can be reduced while rapidly supplying the malodor gas to the odor removal device 60 .

An outlet hole 58a may be formed in the inner duct 58 . The outlet hole 58a is formed to pass through the inner duct 58 and may be formed to have a smaller area from the inner side to the outer side of the inner duct 58 .

The control unit 59 may be connected to the end of the inner duct 58 . The adjusting unit 59 is connected to the perforated plate 59a inside the inner duct 58 to adjust the position of the perforated plate 59a in one direction.

The perforated plate 59a may include a plurality of perforated holes 59b. The plurality of perforated holes 59b are formed to pass through the perforated plate 59a and may be formed to increase in area from the inside to the outside of the perforated plate 59a, but is not necessarily limited thereto. Here, the plurality of perforated holes 59b formed in the perforated plate 59a are formed to correspond to the positions of the outlet holes 58a, but as the positions of the perforated plates 59a are adjusted, the outlet area of the odor gas may vary.

Through this, the supply pressure of the malodorous gas can be adjusted and supplied to the malodor removal device 60 . That is, the odor removal efficiency is increased by increasing the density of the malodorous gas in the inner duct 58 and supplying it as the malodorous gas, and at the same time, the temperature of the malodorous gas is lowered to increase the gas solubility, and the blower 61 is used by the lowered pressure. It can be more easily mixed with the circulating atomized fluid.

Although the embodiments of the present invention have been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention can add components, Other embodiments may be easily proposed by changes, deletions, additions, etc., but these will also fall within the scope of the present invention.

200: septic tank odor removal system
100: septic tank 10: anaerobic tank
20: anaerobic tank 30: aeration tank
40: sedimentation tank 80: flow control tank
52: first duct
53: blower 54: second duct
55: mixing section 56: third duct
57: return duct 58: inner duct
59: control unit 59a: perforated plate
541: first flow nozzle 542: second flow nozzle
541a, 561a: guide part 541b, 561b: connection part
541c, 561c: control unit
60: odor removal device 61: blower
62: moisture removal unit 63: gas sensor
70: inner return line 71: first supply line
72: second supply line 73: nozzle unit
73a: nozzle 74: fluid drain pipe
75: fluid filter unit 76: supply pump

Claims (5)

anaerobic tank into which raw water and return sludge are introduced;
an anaerobic tank for converting nitrate nitrogen transferred from the anaerobic tank into nitrogen gas;
an aeration tank connected to the anaerobic tank and storing highly active microorganisms;
a sedimentation tank located at the rear end of the aeration tank;
an internal return line for transferring some sludge from the aeration tank to the anoxic tank;
a malodor removal device connected to the anaerobic tank and the internal return line to mix the sludge with the malodor introduced from the anaerobic tank;
a blower connected to the anaerobic tank;
a duct connecting the odor removal device and including a flow nozzle;
a conveying duct connected to the odor removal device near the discharge unit; and
The septic tank malodor removal system further comprising a mixing unit connecting the conveying duct and the duct to mix the malodorous gas introduced from the anaerobic tank and the malodorous gas returned through the conveying duct. delete delete The method of claim 1,
The flow nozzle is
a first flow nozzle connected to the rear end of the mixing unit and connected to a second duct connected to the blower; and
and a second flow nozzle connected to a front end of the mixing unit and connected to a third duct connected to the odor removal device. 5. The method of claim 4,
The first flow nozzle,
a guide part installed inside the second duct;
Located outside the second duct, connected to the guide part and the connecting part as a medium, the septic tank odor removal system including a control part for controlling the movement of the guide part.

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