JPH07313584A - Medical waste disposal facility - Google Patents

Abstract

PURPOSE:To efficiently enable operation on a narrow site, and perform unpolluting processing on flue gas and waste water by arranging primary and secondary combustion chambers to incinerate waste, a dust collector to absorb and remove dispersive quality, a solid material removing device from absorbing liquid and a waste water treatment device for the absorbing liquid in order. CONSTITUTION:Waste is thrown in a primary combustion chamber 1, and generating ash is carried outside by an ash receiving carriage 5. Combustion gas flowing in an exhaust pipe 6 from a secondary combustion chamber 2 enters a dust collector 8 after a temperature is lowered by a heat exchanger 7, and dispersive quality in the gas is absorbed and removed. The combustion gas coming out of the dust collector 8 is discharged in the atmosphere from a chimney 12, and absorbing liquid absorbing the dispersive quality is sent in a solid material removing device through a neutralizing tank 13 and a flow rate adjusting tank 14, and a high polymer coagulant or the like is added, thus a solid material is coagulated, and solid material sludge is discharged after being dehydrated by a dehydrator 21. Aeration processing is performed on the solid material removed absorbing liquid by first and second aeration tanks 22 and 23, and the generating solid material is removed with a precipitator 25, and treated water is discharged outside of a system from an inverse wash water tank 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical waste treatment facility incidental to a medical facility such as a hospital.

[0002]

Conventionally, medical waste generated in hospitals and the like has been handled by an external specialist.

[0003] However, medical waste contains infectious substances, and the amendment of laws and regulations requires treatment at the source.

Combustion temperature of 8 for incineration of medical waste
It is necessary to keep the temperature above 00 ° C and to completely eliminate smoke and wastewater pollution. In addition, for example, in a medical facility where the amount of waste generated is about 2 tons / day, a processing facility that satisfies the above conditions requires a large processing space, and is not a small number of medical facilities such as hospitals. It will be a burden.

The present invention is intended to solve the above problems. The purpose is to propose a medical waste treatment facility attached to a medical facility which can be installed in a relatively narrow laying, can be operated efficiently, and can completely incinerate smoke and wastewater without incineration.

[0006]

[Means for Solving the Problems] This medical waste treatment facility is incidental to a medical facility. It is a primary combustion chamber for incinerating waste, a secondary combustion chamber, and dispersoids from combustion gas by gas-liquid contact. It is characterized in that a dust collector for absorbing and removing, a solid matter removing device for removing solid matter from the absorbing liquid, and a wastewater treatment tank including an aeration treatment tank for the absorbing liquid are sequentially provided.

[0007]

EXAMPLES The processing facilities and processing processes of the examples will be described below with reference to the flow sheet shown in FIG.

Reference numerals 1 and 2 are a primary combustion chamber and a secondary combustion chamber, which are vertically connected, each equipped with a burner, and 800 ° C.
It is possible to completely sterilize infectious waste by raising the temperature to. An input port 3 is provided on one side surface of the primary combustion chamber 1, waste is input using an input device 4 such as a trolley, and ash generated in the combustion chamber is received by an ash receiving trolley 5 and carried out to the outside.

The combustion gas flowing in the exhaust pipe 6 extending upward from the secondary combustion chamber 2 exchanges heat with water in the heat exchanger 7 to lower the temperature, and then enters the dust collector 8. The concentration of the caustic soda solution in the chemical solution tank group 9 is adjusted to the dust collector 8 with the water in the water supply tank 10 and ejected in a mist form to bring the gas and liquid into contact with the combustion gas to disperse dust, mist, soluble components, etc. Absorb and remove quality.

Hydrochloric acid or the like generated from waste made of vinyl chloride resin is absorbed by the absorbing liquid here.

The combustion gas leaving the dust collector 8 passes through the exhaust fan 11 and is discharged from the chimney 12 into the atmosphere. The absorbing liquid that has absorbed the dispersoid is sent to the solid substance removing device via the neutralization tank 13 and the flow rate adjusting tank 14.

The removing device is a series of first and second reaction tanks 1.
5, 16, aging tank 17 and pressure floating tank 18,
Add polyaluminum chloride solution (PAC), caustic soda solution, polymer coagulant, etc. sent from the chemical tank group 9 to agglomerate solids and pressurize and float by ejecting pressured air in the pressure flotation tank. , Collected by rake 19,
It is sent to the sludge storage tank 20. Solid sludge is dehydrator 21
Drain after dehydration.

The absorption liquid from which the solid matter has been removed is aerated in the first and second aeration tanks 22 and 23, and if necessary, the chemical liquid tank group 9
A nutrient for microbial propagation is added to promote the reduction of BOD value. In the figure, 24 is a blower. Solid matter such as activated sludge generated in this step is removed in the settling tank 25, and the treated water passes through the filtration pump tank 26 and the sand filter 2
It is treated with No. 7 and discharged from the backwash water tank 28 to the outside of the system. If a trace amount of heavy metals remains, they are removed by the chelate tower 29.
The sludge generated in the sedimentation tank 25 in the biological treatment device is also guided to the sludge storage tank 20.

FIG. 2 shows the layout of the inside of the facility. Three
Primary and secondary combustion chambers 1, 2 and 3 on the second floor of a one-story building
Heat exchanger 7 and dust collector 8 on the first floor, flow rate adjustment tank 1 on the first floor
4 and the aeration tank 22 are installed as wastewater treatment tanks. The waste is put in through the inlet 3, the ash after incineration is received by the ash carrier 5 and is carried out of the system by the ash container.

[0015]

The present invention is constructed as described above. This facility is equipped with primary and secondary combustion chambers and can easily incinerate at a temperature of 800.
It can be completely sterilized from infectious waste by keeping the temperature above ℃.

The combustion gas can be purified and released below a regulated value by absorbing and removing dust, mist, soluble components and the like by contacting gas and liquid in a dust collector.

The absorbing liquid can be chemically, biochemically or physicochemically treated with wastewater in a wastewater treatment tank such as a solid matter removing device and an aeration treatment tank, and purified to a regulated value or less and discharged.

If a dust collector is arranged on the upper floor of the treatment facility and a solid substance removing device and a waste water treatment tank for absorbing liquid are arranged on the lower floor of the floor with the primary and secondary combustion chambers installed, it is a large site. The facility can be constructed three-dimensionally without occupying
Further, since the most labor-intensive work of inputting waste and carrying out ash is performed on a floor different from the floor of the exhaust and wastewater treatment steps, the efficiency of the work can be improved without being restricted by other steps.

[0019]

EFFECTS OF THE INVENTION This treatment facility is as described above, and it can be attached to a medical facility such as a hospital without occupying a large area, can incinerate waste with good work efficiency, and can regulate exhaust and drainage. It becomes possible to purify the gas below the specified value and discharge it.

[Brief description of drawings]

FIG. 1 is a process diagram of a processing facility according to an embodiment.

FIG. 2 is a side view showing a partial cross section of a treatment facility installed in a three-story building.

[Explanation of symbols]

1, 2 ... First and second combustion chambers, 3 ... Charging port, 4 ... Charging device, 5 ... Ash carrier, 6 ... Exhaust pipe, 7 ... Heat exchanger, 8 ... Dust collector, 9 ... Chemical liquid tank group, 10 ... water supply tank, 11 ... blower, 12 ... chimney, 13 ... flow rate adjusting tank, 14 ... solids removing device, 15,16 ... first and second reaction tanks, 17 ... aging tank,
18 ... Pressurized floating tank, 19 ... Rake, 20 ... Sludge storage tank,
21 ... Dehydrator, 22, 23 ... First and second aeration tanks, 24 ...
Blower, 25 ... Settling tank, 26 ... Filtration pump tank, 27 ... Sand filter, 28 ... Backwash water tank, 29 ... Chelate tower.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location F23G 7/00 ZAB A (72) Inventor Zenji Takayama 2-14 Shineicho, Aichi Prefecture Nagoya Kashima Construction Co., Ltd. Nagoya In branch (72) Inventor Kazuo Asamura 2-14 Shineicho, Nagoya, Aichi Kashima Construction Co., Ltd.In Nagoya branch (72) Inventor Kazushi Kawada 2-14 Shineicho, Nagoya, Aichi Kashima Construction Co., Ltd.Nagoya branch (72) Inventor Keisuke Fujita 1 of 12 Sakaemachi South Building, Toyoake City, Aichi Prefecture

Claims (2)

[Claims] 1. A medical waste treatment facility incidental to a medical facility, in which primary and secondary combustion chambers for incinerating waste, a dust collector for absorbing and removing dispersoids from combustion gas by gas / liquid contact,
A medical waste treatment facility comprising a solid matter removing device for removing solid matter from an absorbent and a wastewater treatment tank including an aeration treatment tank for the absorbent in order. 2. A center of a floor where primary and secondary combustion chambers are installed, a dust collector is arranged on an upper floor thereof, and a solid substance removing device and a waste water treatment tank for absorbing liquid are arranged on a lower floor thereof. The medical waste treatment facility according to claim 1.