JPS63185489A - Deodorizing equipment - Google Patents

Abstract

PURPOSE:To surely eliminate odor by isolating a sewage treating vessel in a treating chamber, keeping the treating chamber at negative pressure to prevent the leakage of a malodorous gas to the outside, and supplying the air in the treating vessel to a deodorizing means. CONSTITUTION:The treating chamber 2 provided with the sewage treating vessels 4-9 on the inside is isolated from the surroundings, and an air supply duct 13 for sending the external air into the treating chamber 2 and a suction duct 4 for discharging the air are provided. The suction duct is connected to the deodorizing means consisting of a deodorizing device 21 and a gas-turbine generator 17, and the pressure in the suction duct is made lower than the pressure in the air supply duct 13. As a result, the leakage of the malodorous gas to the outside is completely prevented. In addition, the malodor can be surely eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to deodorizing equipment that eliminates bad odors generated from sewage treatment facilities without dispersing them to the surrounding area.

<Conventional technology and its problems> Human waste and domestic wastewater led to the sewage treatment tank emit putrid odor,
Numerous foul-smelling gases that cause ammonia odor etc. are generated and released into the atmosphere. For this reason, sewage treatment facilities are generally constructed in suburban areas, away from residential areas and downtown areas, taking residents' sentiments into consideration.

However, in this case, the sewage pipes that lead human waste and domestic wastewater from residential areas to sewage treatment facilities become longer and larger in diameter, requiring a great deal of labor to construct them.

On the other hand, with the recent development of sewage treatment technology, it has become possible to bring sewage into compliance with environmental standards.

Therefore, if we can prevent gases that cause bad odors, even if we build sewage treatment facilities in residential areas, we will not only avoid aggravating residents' sentiments, but also shorten the length of sewage pipes.
The construction work becomes easier.

The present invention has been made in consideration of the above circumstances, and is a deodorizing equipment 1i that can deodorize malodorous gases with a simple configuration! is intended to provide.

Means for Solving the Problems In order to achieve the above object, the present invention isolates the sewage treatment tank, which is the source of the malodorous gas, from the surroundings, and creates a negative pressure inside the tank to prevent the leakage of the malodorous gas. This was prevented. That is, in the deodorizing equipment according to the present invention, a treatment chamber in which a sewage treatment tank is provided is isolated from the surroundings, and an air supply duct for supplying outside air and an intake duct for discharging air are provided into the treatment chamber. The air intake duct is connected to a deodorizing means, and the inside of the air intake duct is adjusted to a lower pressure state than that of the air supply duct.

<Examples> The present invention will be specifically described below with reference to illustrative examples.

FIG. 1 is a schematic sectional view of an embodiment of the present invention, FIG. 2 is a plan view of the underground portion thereof, and FIG. 3 is a block diagram of the main part.

Building 1 is built in a residential area or downtown area, and includes a gymnasium,
It consists of various facilities such as movie theaters and entertainment halls. Building 1
consists of an above-ground part and an underground part, and the above-mentioned various facilities are installed in the above-ground part, and the underground part has a treatment room 2 for sewage treatment.
and a power generation room 3 for generating power. Each hall 30 is formed in the ground area according to the purpose of use, and each hall 30 has lighting equipment 31 such as electric lights, partition walls that divide the hall 30 into small halls, and a naro motor 33 that is the drive source for the movable seats 32. Alternatively, electric appliances such as a fan 34 for adjusting the air, heating and cooling the hall 30, etc. are wired, and are driven in a predetermined manner by an external power source or a private power source from a gas turbine generator 17, which will be described later.

The treatment room 2 processes human waste, domestic wastewater, etc. discharged from surrounding residential areas and downtown areas to meet environmental standards, and is equipped with various sewage treatment tanks. This sewage treatment tank is a sand settling tank4. Aeration tank5. Sedimentation tank6. Nitrification tank7.
Denitrification tank8. From the coagulation sedimentation tank 9, furthermore, the flow rate adjustment tank,
A deaeration tank and a disinfection tank (both not shown) are placed in the middle as appropriate.
It is connected. The settling tank 4 removes foreign substances such as soil and sand 2 from the wastewater flowing in from the inlet pipe 10, and the aeration tank 5 performs aeration, and the sludge is settled in a settling tank 6 following the aeration tank 5. The nitrification tank 7 mainly performs oxidative decomposition of ammonia, and the denitrification tank 8 reduces and removes nitrogen oxides, thereby reducing the BOD and COD of wastewater.

The SS is reduced and the phosphorus compounds and nitrogen compounds are decomposed, and the wastewater that complies with environmental standard values is discharged from the discharge pipe 11 into a river or the like via the coagulation and sedimentation tank 9.

Incidentally, a series of such sewage treatment tanks are arranged in plural rows in the treatment chamber 2, so that even a large amount of sewage can be handled. The treatment room 2 is isolated from the above-ground part 1 power generation room and other rooms by concrete 1, walls, and doors, and under normal conditions, the air inside the treatment room 2, that is, the air containing foul-smelling gas from the sewage treatment tank, is No leakage to the outside. Further, in the processing chamber 2, an air supply duct 13 that guides outside air into the room and an air intake duct 14 that leads the air inside the processing chamber 2 to the outside are arranged to face each other.

These ducts 13.14 lead to a series of sewage treatment tanks 4.5.
6, 7, 8 and 9, and is located above the exhaust port 13.
m and an intake port 14a are appropriately opened in the longitudinal direction. Furthermore, a fan 12 is attached to the intake duct 14, and the amount of outside air introduced into the air supply duct 13 is set to W! !
A valve 15 is attached to the intake duct 14 to adjust the amount of air discharged from the processing chamber 2. When the fan 12 is driven with such a configuration, the air intake duct 14 is brought into a reduced pressure state, and the air inside the processing chamber 2 is sucked into the air intake duct 14 and discharged to the outside of the processing chamber 2. As a result, the inside of the processing chamber 2 becomes negative pressure, and outside air is introduced into the processing chamber 2 from the air supply duct 13. Therefore, by adjusting the amount of air discharged from the processing chamber 2 and the amount of external air flowing into the processing chamber 2 using the valves 15 and 16 so that the pressure inside the intake duct 14 becomes lower than that in the air supply duct 13. , the processing chamber 2 is maintained in a negative pressure state. In such a negative pressure state, the air in the processing chamber 2 will not leak out from any part other than the intake duct 14, and even if the door of the processing chamber 2 is opened, only outside air will flow into the room. Since the flow is one-way, the foul-smelling gas generated from the sewage treatment tank does not leak to the outside, and the outside of the treatment chamber 2 and its surroundings do not feel bad odor, thereby eliminating discomfort.

Next, the air in the processing chamber 2 is supplied from the valve 16 to the deodorizing means. The deodorizing means is connected to the valve 16.
1, and a gas turbine generator 17 connected downstream of the deodorizer M21.

The deodorizer 21 is constructed by filling a frame with activated carbon powder or reactive metal powder. Activated carbon powder adsorbs and removes malodorous gases through its chemical adsorption power.

On the other hand, the reactive metal powder removes malodorous gases by reacting with and adsorbing the malodorous gases. The reactive metals selected include ferrous sulfate, zinc sulfate, and aluminum sulfate, and one or more of these may be used in combination. It is also possible to use reactive metal powder and activated carbon powder together. Air containing malodorous gas generated from the sewage treatment tank first passes through this odor absorbing ta21. Through this passage, a certain type of malodorous gas or a certain concentration of malodorous gas is adsorbed and removed, resulting in a diluted state. The gas turbine generator 17 following the deodorizer 21 is generally constructed by incorporating a power generation device into a jet engine that serves as a driving source for an aircraft, a ship, or the like. This gas turbine generator 17 is 800
Fuel can be combusted at high temperatures above ℃. on the other hand,
The foul-smelling gases generated from sewage treatment tanks include gases such as hydrogen sulfide, various phenols, mercaptans, and ammonia. These foul-smelling gases maintain a stable state without being decomposed, oxidized, or reduced in the vicinity of 700℃, and even if they are supplied as combustion air to general incinerators or diesel engines, the foul-smelling gases cannot be removed. Can not. However, when supplied as combustion air for a jet engine (gas turbine generator) that generates high heat of 800 degrees Celsius or more, it is exposed to high temperatures and decomposed into simple elements or similar () states. For,
It can be made odorless. Also, gas turbine generator 17
Since the supply of a large amount of combustion air is essential to drive the system, even if a large amount of foul-smelling gas is generated from the sewage treatment tank, all of it can be made odorless. Furthermore, the electric power generated by driving the gas turbine generator can be supplied not only to nearby residential areas but also to various facilities within the building 1 and their electrical appliances. Therefore, by installing a sewage treatment facility and a gas turbine generator in the same building, it is possible to purify sewage, deodorize foul-smelling gas, and generate electricity at the same time. , it becomes possible to install it in downtown areas, etc.

In FIG. 3, 19 is a fuel tank that supplies fuel to the gas turbine generator 17, and 18 is a fuel tank that supplies fuel to the gas turbine generator 17.
A heat exchanger connected to the output side of the Here, the heat exchanger 18 is connected to the exhaust gas ## of the exhaust gas from the gas turbine generator 17.
It is connected to a first gas path 25 branched from 124 by a valve 27 . This first gas path 25 is connected to a second gas @2 branched from the gas path 24 by a valve 28.
6, and a second gas line 26 is connected to a chimney 20 for releasing exhaust gases into the atmosphere. Therefore, the high temperature and high pressure exhaust gas discharged from the gas turbine generator 17 is transferred to the heat exchanger I.
Heat is stored by #18 and the chimney 20 is in a low temperature state.
The heat exchanger 18 is used for heating and cooling the building 1,
By connecting it to floor heating, hot water supply, and even heated pools and bathrooms, it becomes possible to effectively utilize the latent heat of exhaust gas. Furthermore, in FIG. 3, 23 is a three-way valve installed between the deodorizer 21 and the gas turbine generator 17, and the bypass passage 29
The air from the deodorizer 21 is guided directly to the chimney 20. In other words, when the amount of foul-smelling gas generated from the sewage treatment tank is small, or when the deodorizing power of the deodorizer 21 is strong, no foul odor is felt, so there is no need to worsen the surrounding atmospheric environment. Instead of switching the three-way valve 23 and guiding the air in the processing chamber 2 to the gas turbine generator 17, the air is directly guided from the bypass path 29 to the chimney 20.
It is released into the atmosphere. As a result, the supply of foul-smelling gas to the gas turbine generator 17 becomes intermittent or intermittent, and the driving parts in the gas turbine generator 17 are not constantly in contact with the foul-smelling gas, so the gas turbine power generation Ia1
Erosion of 7 and adhesion to moving parts is suppressed, and there is no adverse effect on the gas turbine generator 17.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made. Either the deodorizer 121 or the gas turbine generator 17 may be used as the deodorizer, or a plurality of these may be provided. Further, the reduced pressure state within the intake duct 14 may be maintained by a pump. Furthermore, the processing chamber 2 may be provided in the above-ground portion of the building, or may be installed outside the building.

<Effects of the Invention> According to the present invention as described above, the sewage treatment tank is isolated within the treatment chamber and the treatment chamber is brought into a negative pressure state, so that no foul-smelling gas leaks to the outside. Moreover, since the air inside the processing chamber is supplied to the deodorizing means, deodorization can be performed reliably. Therefore, the sewage treatment facility can be installed in a residential area, and its construction is easy, since no odor pollution occurs.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of an embodiment of the present invention, FIG. 2 is a plan view of the underground portion, and FIG. 3 is a block diagram of the main parts. 1. Building, 2. Processing room, 3. Power generation room.
(Beak) 12...Fan, 13. Air supply duct, 14..Intake duct, 17. Gas turbine generator (deodorizing means), 18...
Heat exchanger, 20... Chimney, 21... Deodorizer (deodorizing means)

Claims (2)

[Claims] (1) A treatment chamber in which a sewage treatment tank is provided is isolated from the surroundings, and an air supply duct that sends outside air into the treatment chamber and an air intake duct that discharges air are provided, and the air intake duct is a deodorizing means. odor control equipment, characterized in that the interior of the intake duct is adjusted to a lower pressure state than the air supply duct. (2) The deodorizing equipment according to claim (1), wherein the deodorizing means is a gas turbine generator that generates combustion heat of 800°C or higher.