KR101905842B1 - deodorization apparatus of sewer - Google Patents

Abstract

The present invention relates to a sewage pipe deodorizing device and, more specifically, to a sewage pipe deodorizing device capable of effectively removing odors by spraying a liquid catalyst after injecting odor gas generated in a sewage pipe into a spraying tower. The sewage pipe deodorizing device of the present invention comprises: a base layer made of concrete on the ground; a liquid catalyst storage tank installed on the upper part of the base layer to store a liquid catalyst; a spraying tower installed on the upper part of the liquid catalyst storage tank to be connected to the inside of the liquid catalyst storage tank; a gas inflow unit for forming an inflow path in which odor gas generated in the sewage pipe is introduced into the spraying tower; a liquid catalyst spraying means for spraying a liquid catalyst into the spraying tower to remove hydrogen sulfide in the odor gas introduced into the spraying tower through the gas inflow unit; a ventilator installed on the upper part of the spraying tower; and a cover unit installed on the upper part of the ventilator to prevent rainwater from flowing into the ventilator.

Description

A deodorization apparatus of sewer

The present invention relates to a sewage pipe deodorization apparatus, and more particularly, to a sewage pipe deodorization apparatus capable of effectively removing odor by injecting a malodorous gas generated from a sewer pipe into a gas diffusion tower and injecting a liquid catalyst.

Various household wastes generated from households and industrial wastewaters generated in the industrial complex flow through the sewer pipe buried in the ground to the sewage end treatment plant and are discharged to the river through separate purification treatment.

In this process, the waste water flowing through the sewer pipe is frequently spoiled by the action of various bacteria and microorganisms during the flow, so that the biological oxygen demand (BOD) and the chemical oxygen demand (COD) are increased while passing through the sewer pipe, (DO) is lowered, various harmful gases such as hydrogen sulfide and ammonia are generated, and water-borne diseases are spread due to various insects in the pipeline.

Furthermore, in the case of a summer, where the temperature is high, the amount of gas generated as described above is increased to cause a bad odor.

The main cause of the odor generated in such sewer pipes is hydrogen sulfide generated by the lean oxygen in the pipe. Hydrogen sulfide not only causes a strong odor but also harms the human body and has many problems such as damage to the sewer pipe due to its strong corrosiveness.

Conventionally, various methods and apparatuses have been developed for removing or reducing malodorous gas from a sewer pipe discharged through a manhole.

Korean Patent No. 10-0967343 discloses a sewage pipe deodorization apparatus.

The sewage pipe deodorization apparatus includes an air vent which forms a filter in a hollow space in a cylindrical shape; An active carbon layer formed of impregnated activated carbon inside the air vent and removing odor gas; A cleaning nozzle located below the activated carbon layer and absorbing circulating water to absorb dust and water-soluble gas in the spray odor gas; A bio filter disposed below the cleaning nozzle to remove odorous gas from the pine bark carrier filter; A pallet filter disposed below the biofilter and removing odors with a membrane formed in contact with the circulating water; And a demister positioned below the polling filter to prevent moisture generated during the reaction from leaking into the sewer pipe.

In the sewage dewatering device, four filling layers are formed inside the air vent, such as an activated carbon layer, a biofilter, a palying filter, and a demister, so that when the odor generated in the sewer pipe flows into the air vent, a high inflow resistance occurs, It has a large risk of damaging the car passing by the people around it due to detachment to the outside and the manhole in the surrounding roads. It causes performance degradation due to the water immersion of the dry activated carbon due to the continuous inflow of water mist through the lower part of the manhole .

Further, there is a problem that it is difficult to remove hydrogen sulfide, which is a main component of the odor, by simply spraying the circulating water into the air vent.

Korean Registered Patent No. 10-0967343: Sewage pipe deodorizing device

The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a liquid catalyst which can easily flow odor gas generated from a sewer pipe into the interior of a spray tower and has a good odor removing ability such as hydrogen sulfide and ammonia The present invention provides a sewage pipe deodorization apparatus capable of effectively removing odor by spraying.

To achieve the above object, according to the present invention, there is provided a sewer pipe deodorization apparatus comprising: a base layer formed of concrete on the ground; A liquid catalyst storage tank installed above the base layer and storing the liquid catalyst; A spray tower installed at an upper portion of the liquid catalyst storage tank and connected to the inside of the liquid catalyst storage tank; A gas inflow section for forming an inflow passage through which odorous gas generated in the sewage pipe flows into the interior of the spray tower; A liquid catalyst injection means for injecting a liquid catalyst into the spray tower to remove hydrogen sulfide in the malodor gas flowing into the spray tower through the gas inlet; a ventilator installed on the spray tower; And a cover installed on the ventilator to block rainwater from entering the ventilator.

The gas inlet includes a gas inlet pipe extending from the inside of the spray tower and passing through the base layer and connected to a manhole of the sewer pipe, and a gas inlet pipe connected to an upper portion of the gas inlet pipe to cover an upper portion of the gas inlet pipe A conical lid having a lower end portion having a diameter larger than the diameter of the gas inflow pipe; and an inlet having a plurality of openings formed at regular intervals on an upper side surface of the gas inflow pipe.

The liquid-phase catalyst injection means includes a circulation pump installed in the liquid-phase catalyst storage tank, and a spray nozzle installed in the spray tower, connected to the circulation pump by a liquid-phase catalyst supply pipe and spraying the liquid-phase catalyst downward.

And a regeneration unit for spraying a part of the liquid catalyst passing through the liquid catalyst supply pipe into the liquid catalyst stored in the liquid catalyst storage tank to regenerate the liquid catalyst together with the liquid catalyst, A check window is provided at a height corresponding to the injection nozzle, and an illumination lamp is provided between the check window and the ventilator.

Wherein the gas inlet further comprises a fan installed inside the gas inlet pipe and a rotating unit rotating the fan by the kinetic energy of the liquid catalyst flowing along the liquid catalyst feed pipe, A casing installed outside the casing and provided with an inlet through which a fluid flows into the lower portion and an outlet through which the fluid is discharged, and an impeller rotatable by the flow of fluid flowing through the inlet of the casing, A gear portion that is axially coupled to the impeller and extends to the inside of the gas inlet pipe, a gear portion that connects the rotating shaft and the fan, and a liquid catalyst that flows along the liquid catalyst supply pipe to the inside of the casing A first diesel oil pipe branched from the liquid catalyst supply pipe and connected to an inlet of the casing; And a second diesel oil pipe connecting the outlet of the casing and the liquid catalyst supply pipe for introducing the liquid catalyst flowing out through the liquid catalyst supply pipe.

As described above, the present invention effectively removes hydrogen sulfide, which is a main component of the odor, by injecting the malodor gas generated from the sewer pipe into the interior of the spray tower and spraying the liquid catalyst.

In addition, since the present invention eliminates the malodor by the liquid catalyst, it is not necessary to provide a large number of filter layers on the spray tower as in the prior art, so that the inflow resistance of the malodorous gas can be greatly reduced.

1 is a perspective view of a sewage pipe deodorization apparatus according to an embodiment of the present invention,
Fig. 2 is a sectional view of Fig. 1,
3 is a cross-sectional view illustrating a main part of a sewer pipe deodorizing apparatus according to another embodiment of the present invention,
4 is a perspective view of FIG.

Hereinafter, a sewage pipe deodorizing apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, a sewage pipe deodorization apparatus according to the present invention includes a base layer 5 made of concrete, a liquid catalyst storage tank 10 installed on the base layer 5 to store a liquid catalyst, A gas inflow section 40 which forms an inflow passage for introducing odor gas generated in the sewage pipe 1 into the interior of the spray tower 20; Liquid catalyst injection means for injecting a liquid catalyst into the spray tower 20 to remove hydrogen sulfide in the odor gas introduced into the spray tower 20 through the gas inlet 40, A ventilator 60 installed at an upper portion of the ventilator 20 and a cover 70 installed at an upper portion of the ventilator 60 to block rainwater from entering the ventilator 60.

The base layer 5 is formed to a constant thickness on the ground where the manhole 3 of the sewer pipe 1 is located.

A liquid catalyst storage tank (10) is installed on top of the base layer (5). A liquid catalyst is stored in the liquid catalyst storage tank (10). A drain pipe (15) for discharging the liquid catalyst to the outside is installed in the lower part of the liquid catalyst storage tank (10).

The liquid catalyst stored in the liquid catalyst storage tank 10 can contact the odor gas to effectively remove hydrogen sulfide in the odor gas.

In the liquid phase oxidation process in which the liquid catalyst is brought into contact with the gas, the hydrogen sulfide is removed using the solubility of the gas and the oxidation / reduction reaction of the catalyst, and the liquid catalyst used is recycled and circulated. Since the hydrogen sulfide dissolved in the liquid catalyst is separated into solid sulfur by oxygen, a metal catalyst is usually used to accelerate the oxidation, and these metal ions used must have affinity and redox mechanism. These metal ions include iron ions. Metal ions catalyze oxidation-reduction reactions that oxidize sulfur ions in an aqueous solution and themselves are reduced and oxidized again by oxygen.

In particular, iron chelates using iron ions as liquid catalysts can be operated at room temperature and normal pressure by the method using the solubility of sulfide gas in water and the redox principle of iron chelate compound. As a chelating agent for forming a complex with iron and performing a sulfide elimination reaction, nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), or the like can be used. Examples of the liquid catalyst using such a chelating agent include Fe-EDTA and Fe-NTA. Particularly, it is possible to use, as a liquid catalyst, the compositions described in Korea Patent No. 10-0549544, No. 10-0766125, No. 10-0406495, and No. 10-1497126.

And a filter for removing solid sulfur particles in the liquid catalyst may be provided outside the liquid catalyst storage tank. A portion of the liquid catalyst stored in the liquid catalyst storage tank may be introduced into the filter to remove sulfur particles from the liquid catalyst and then circulate the liquid catalyst back to the liquid catalyst storage tank.

The spray tower (20) is installed on the upper part of the liquid catalyst storage tank (10). The interior of the spray tower (20) and the interior of the liquid catalyst storage tank (10) are connected to each other. Therefore, the liquid catalyst injected from the spray tower 20 drops downward and flows into the liquid catalyst storage tank 10 again.

The spraying tower 20 is formed at a constant height. In the illustrated example, the spray tower 20 has a cylindrical lower body 21 in which the liquid catalyst is sprayed and in contact with the odorous gas, and a cylindrical body 21 formed on the lower body 21 and having a smaller diameter than the diameter of the lower body 21 And an upper body 25 made of a metal.

A demister (23) for removing moisture in the gas may be installed inside the spray tower (20). The demister (23) is installed on the upper side of the lower body (21).

A check window (80) and an illumination lamp (85) may be installed in the spray tower (20).

The inspection window (80) is installed in the lower body (21). The inspection window 80 is provided at a height corresponding to the injection nozzle 35 to be described later. Since the inside of the spray tower 20 can be seen through the check window 80, the administrator can visually confirm whether the apparatus is in operation or abnormal conditions.

The illumination lamp 85 is installed in the upper body 25. By providing the illumination light 85, the present invention has an advantage that it can play a role of a street light.

The gas inlet 40 is connected to the manhole 3 to form an inflow passage through which the odor gas generated in the sewer pipe 1 flows into the interior of the spray tower 20. [

The gas inlet 40 includes a gas inlet pipe 41 provided in the spray tower 20, a conical lid 45 connected to the upper portion of the gas inlet pipe 41, And an inlet port 43 formed on the side surface at a predetermined interval.

The gas inflow pipe (41) is installed inside the spray tower (20) and the lower part extends to the manhole (3). The gas inlet pipe 41 is connected to the manhole 3 through the base layer 5. The upper end of the gas inlet pipe 41 is formed to be higher than the water surface of the liquid catalyst stored in the liquid catalyst storage tank 10.

A lid 45 is installed on the gas inlet pipe 41 to prevent the liquid catalyst injected from the upper part of the lower body 21 from flowing into the gas inlet pipe 41.

The cover 45 is formed to cover the upper portion of the gas inflow pipe 41 by being coupled to the upper portion of the gas inflow pipe 41. The diameter of the lower end of the lid 45 is larger than the diameter of the gas inflow pipe 41. An inlet 43 is formed in the gas inlet pipe 41 so that the malodor gas introduced into the gas inlet pipe 41 can be introduced into the interior of the spray tower 20. [

The inlet 43 is formed on the upper side of the gas inlet pipe 41 at a predetermined interval.

The liquid catalyst injection means is constituted by a circulation pump 31 provided in the liquid catalyst storage tank 10, a circulation pump 31 provided inside the spray tower 20 and connected to the liquid catalyst supply pipe 33, And a spray nozzle 35 for spraying the sprayed water.

The circulation pump 31 is installed at one side of the liquid catalyst storage tank 10 and serves to supply the liquid catalyst to the liquid catalyst supply pipe 33.

The liquid catalyst supply pipe 33 connects the circulation pump 31 and the injection nozzle 35.

The injection nozzle (35) is installed inside the spray tower (20). The injection nozzle 35 is provided on the upper side of the lower body 21 and installed at a higher position than the gas inlet pipe 41. One or two or more spray nozzles 35 may be installed in the spray tower 20. The liquid catalyst injected through the injection nozzle 35 is in contact with the odor gas flowing through the inlet 43 of the gas inlet pipe 41.

And a regeneration unit for injecting a part of the liquid catalyst passing through the liquid catalyst supply pipe 33 into the liquid catalyst stored in the liquid catalyst storage tank 10 to uniformly mix the liquid catalyst and regenerate the liquid catalyst.

The regeneration section causes the liquid catalyst to come into contact with air to regenerate by oxidizing the liquid catalyst. An example of the regeneration section includes a circulation gas discharge pipe 11 branched from the liquid catalyst supply pipe 33 and extending to the interior of the liquid catalyst storage tank via the outside of the liquid catalyst storage tank 10, And a valve 15 to be installed.

The circulation discharge pipe is installed such that the end of the circulation flue pipe 11 is positioned higher than the maximum level of the liquid catalyst stored in the liquid catalyst storage tank 10. [

When the valve 15 is opened, the liquid catalyst of 1/3 to 1/2 vol% of the liquid catalyst pumped by the circulation pump 31 and flowing along the liquid catalyst supply pipe 33 flows into the circulation and discharge pipe 11 And flows along the circulation discharge pipe (11). The liquid catalyst flowing along the circulation and discharge pipe (11) is sprayed onto the surface of the liquid catalyst stored in the liquid catalyst storage tank (10). The liquid-phase catalyst ejected downward at a constant speed and pressure has the effect of aerating the liquid-phase catalyst stored in the liquid-phase catalyst storage tank 10. As the number of bubbles is generated, the contact between the liquid catalyst and the air is enhanced to promote the oxidation of the liquid catalyst.

In order to further promote regeneration of the liquid catalyst, pure oxygen can be injected into the circulation discharge pipe 11. In this case, pure oxygen can be injected into the circulation discharge pipe by connecting the net storage tank storing the pure oxygen with the circulation discharge pipe (11).

The ventilator (60) is installed on the top of the spray tower (20). The ventilator 60 may be a conventional non-powered ventilator. The ventilator 60 serves to suck the malodor gas of the sewage pipe into the interior of the spray tower while being rotated by the wind. In the absence of such a ventilator, the malodor gas may flow into the interior of the spray tower only by the natural pressure of the sewer pipe, so that the malodorous gas may not flow smoothly. However, the present invention provides a ventilator functioning as a natural ventilator. The gas with the hydrogen sulphide removed through the ventilator is released into the atmosphere.

On the other hand, a cover portion 70 is provided on the upper portion of the ventilator 60 to block rainwater from flowing into the ventilator 60.

The cover 70 includes a conical cap 71 and a support plate 70 connecting the cap 71 and the upper body 25 of the spray tower 20 for fixing the cap 71 to the upper portion of the ventilator 60. [ (75).

3 and 4 show a main part of a sewer deodorization apparatus according to another embodiment of the present invention.

Referring to FIGS. 3 and 4, the gas inlet further includes a fan 110 installed inside the gas inlet pipe 41 and a rotation unit 90 for rotating the fan 110.

The fan 110 is installed inside the gas inlet pipe 41 and connected to the gear unit 100. When the gear portion 100 rotates, the fan 110 connected to the gear portion 100 rotates to blow the odor gas of the sewer pipe into the spray tower.

The rotation unit 90 serves to rotate the fan 43 by kinetic energy of the liquid phase catalyst through a part of the liquid phase catalyst flowing along the liquid phase catalyst supply pipe.

In the illustrated example, the rotary unit 90 includes a casing 91 installed outside the gas inlet pipe 41, a casing 91 mounted inside the casing 91 and rotatable by the flow of the fluid flowing through the inlet of the casing A rotating shaft 97 that is axially coupled to the impeller and the impeller and extends to the inside of the gas inlet pipe 41, a gear portion 100 that connects the rotating shaft 97 and the fan 110, A first diesel fuel pipe 93 branched from the liquid catalyst supply pipe and connected to the inlet of the casing 91 for introducing the liquid catalyst into the casing 91 and a liquid phase catalyst flowing out through the outlet of the casing 91 And a second diesel pipe (95) for connecting the outlet of the casing (91) and the liquid catalyst supply pipe for introducing the liquid into the liquid catalyst supply pipe.

The casing 91 is formed in a cylindrical shape. The casing (91) is supported by a fixed bracket (99) provided outside the gas inflow pipe (41). The casing 91 has an inlet connected to the first diesel oil pipe 93 and an outlet connected to the second diesel oil pipe 95 at an upper portion of the casing 91.

A rotation shaft 97 is provided inside the casing 91. The rotary shaft 97 is rotatably supported by the casing 91. One side of the rotary shaft 97 extends into the gas inlet pipe 41 and is engaged with the gear portion 100.

The impeller is axially coupled to the rotary shaft (97) and installed inside the casing (91). Although not shown, the impeller consists of a boss coupled to the rotating shaft 97 and a plurality of blades radially formed on the outer circumferential surface of the boss.

The first diesel fuel pipe 93 branches from the liquid catalyst supply pipe and is connected to the inlet of the casing 91. The second diesel fuel pipe 95 connects the outlet of the casing 91 to the liquid catalyst supply pipe.

The gear portion 100 is provided with a plurality of gears, not shown. The plurality of gears suitably engage to transmit the rotational force of the rotating shaft 97 to the fan 110. The gear portion 100 is supported by a supporting bracket 105 provided inside the gas inlet pipe 41.

The liquid catalyst stored in the liquid catalyst storage tank is pumped by the circulation pump and moved along the liquid catalyst supply pipe to be supplied to the injection nozzle. At this time, a part of the liquid catalyst passing through the liquid catalyst supply pipe flows into the first diesel oil pipe 93, passes through the casing 91, and then flows into the liquid catalyst supply pipe through the second diesel oil pipe 95.

At this time, a rotational force for rotating the impeller is generated by the kinetic energy of the liquid phase catalyst passing through the casing (91). The generated rotational force is transmitted to the gear portion 100 through the rotation shaft 97. Accordingly, the fan 110 rotates inside the gas inlet pipe 41 and sucks the odor gas in the sewer pipe and moves it into the interior of the spray tower. This can smooth the inflow of odor gas by rotating the fan even when the non-powered ventilator does not operate because the wind is not blowing.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

1: sewer 3: manhole
5: Base layer 10: Liquid catalyst storage tank
20: minute slurry tower 21: lower body
25: upper body 31: circulation pump
35: injection nozzle 40: gas inlet
41: gas inlet pipe 60: ventilator
80: Check window 85: light

Claims (5)

A base layer formed of concrete on the ground;
A liquid catalyst storage tank installed above the base layer and storing the liquid catalyst;
A spray tower installed at an upper portion of the liquid catalyst storage tank and connected to the inside of the liquid catalyst storage tank;
A gas inflow section for forming an inflow passage through which odorous gas generated in the sewage pipe flows into the interior of the spray tower;
Liquid catalyst injection means for injecting a liquid catalyst into the spray tower to remove hydrogen sulfide in the malodorous gas flowing into the spray tower through the gas inlet;
A ventilator installed at an upper portion of the spray tower;
And a cover installed on the ventilator to block rainwater from flowing into the ventilator,
The gas inlet includes a gas inlet pipe extending from the inside of the spray tower and passing through the base layer and connected to a manhole of the sewer pipe, and a gas inlet pipe connected to an upper portion of the gas inlet pipe to cover an upper portion of the gas inlet pipe A conical lid having a lower end portion having a diameter larger than the diameter of the gas inflow pipe; and an inflow port formed at an upper side of the gas inflow pipe at a predetermined interval,
The liquid-phase catalyst injection means includes a circulation pump installed in the liquid-phase catalyst storage tank, a spray nozzle installed in the spray tower, connected to the circulation pump by a liquid-phase catalyst supply pipe and spraying the liquid-
Wherein the gas inlet further comprises a fan installed inside the gas inlet pipe and a rotating unit rotating the fan by the kinetic energy of the liquid catalyst flowing along the liquid catalyst feed pipe,
The rotation unit includes a casing installed outside the gas inlet pipe and provided with an inlet through which fluid is introduced into a lower portion and an outlet through which fluid is discharged, A gear portion for connecting the rotation shaft to the fan; and a liquid phase catalyst which flows along the liquid phase catalyst supply pipe, A first gas-liquid pipe branched from the liquid-phase catalyst supply pipe to be introduced into the casing and connected to an inlet of the casing; and a second gas-liquid pipe connected to the inlet of the casing to introduce the liquid-phase catalyst flowing out through the outlet of the casing into the liquid- And a second diesel oil pipe connecting the outlet and the liquid catalyst supply pipe,
And a regeneration unit for spraying a part of the liquid catalyst passing through the liquid catalyst supply pipe to the surface of the liquid catalyst stored in the liquid catalyst storage tank to regenerate the liquid catalyst together with the mixing of the liquid catalyst,
Wherein the regeneration section is branched from the liquid catalyst supply pipe and extends to the inside of the liquid catalyst storage tank via the outside of the liquid catalyst storage tank and has an end located higher than a liquid level of the liquid catalyst stored in the liquid catalyst storage tank, And a valve installed in the circulation and discharge pipe. delete delete 2. The sewage pipe deodorization apparatus according to claim 1, wherein the spray tower is provided with a check window at a height corresponding to the spray nozzle so that the spray tower can be seen inside, and an illumination lamp is installed between the check window and the ventilator. delete

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