JPH02209143A - Sterilizing autoclave equipment - Google Patents

Abstract

PURPOSE:To improve a exhaust gas sterilization effect and to allow an efficient treatment and a simple and safe operation by connecting a heater and a sterilizing filter to a exhaust gas treatment system and disposing an evacuating vacuum device to the exhaust gas treatment system. CONSTITUTION:The sterilizing autoclave equipment is mounted with the heater 2, a temp. sensor 3, a pressure sensor 4, a water level sensor 5, etc., in the autoclave 1 for high-pressure steam sterilization. A piping 6 for conducting the polluted water from a drain source and a piping 7 for releasing the waste water after the sterilization treatment to the outside are connected to the autoclave 1. A piping 8 of the exhaust gas treatment system is connected to the steam phase part of the autoclave 1 and a vacuum filter box 12 contg. a heater 11 is connected via valves 9, 10 thereto. The sterilizing filter 13 is built in the vacuum filter box 12. Further, the evacuating vacuum device 14 to reduce the internal pressure of the autoclave 1 is provided. The high-efficiency treatment by the sterilizing filter 13 cooperatively with the internal pressure control of the autoclave 1 is possible without having the trouble by the moisture bedewing of the exhaust gas.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to sterilization autoclave equipment. More specifically, the present invention relates to sterilization autoclave equipment useful as a biohazard countermeasure that can effectively perform sterilization in an exhaust treatment system.

(Conventional Technologies and Their Issues) In recent years, with the development of medical technology and biotechnology, the handling of wastewater and exhaust gas after the manipulation and treatment of living organisms and biologically related substances has begun to become a major problem.

For example, in hospitals and research institutes, tissues and cells contaminated with viruses and bacteria, as well as products and byproducts produced by genetic engineering of viruses and bacteria themselves, are not necessarily thoroughly sterilized before being disposed of as wastewater. In many laboratories, even human blood that is not exhausted is simply processed.

In this situation, the inventors of the present invention have already developed a method for treating wastewater in P3 to P4 level laboratories and biotechnology facilities, which is characterized by being sterilized with high-pressure steam in an autoclave. Sterilization equipment has been proposed.

This equipment is attracting attention because it is small, low-cost, simple, and has excellent sterilization properties. As a biohazard countermeasure, it can be said that this system will lead the way in the future.

However, it cannot be denied that there are still issues to be solved regarding wastewater sterilization equipment that uses this autoclave. For example, as shown in Figure 2, in conventional wastewater sterilization autoclave equipment,
Contaminated wastewater from hand washing (A) and other wastewater sources (B) is led to a sterilization autoclave (1), where it is sterilized using high-pressure steam at a temperature of about 121°C for about 30 minutes using a heater. ing.

Further, in this case, the heating temperature and time are variable depending on the degree of contamination depending on the object to be treated.

In this autoclave equipment, steaming and exhaust are performed after each high-pressure steam sterilization treatment cycle.
Normally, this waste steam/exhaust gas is freely released from a pipe (E) or is cooled and collected in a trap or the like, and then circulated again to the waste water heating cycle.

However, if the target to be treated reaches level 23 or above, it is necessary to take strict safety measures for the exhaust gas, and even if control is performed using the valve (force) in the pipe (O), the exhaust gas must be controlled. The release is in an unacceptable situation. In addition, circulation to the sterilization cycle using high pressure steam,
This not only reduces the efficiency of the processing system, but also poses a problem in terms of safety if the processing target varies from cycle to cycle.

For this reason, it is also conceivable to arrange a sterilizing filter in the pipe line (E) to sterilize the exhaust gas. However, the relative humidity of the exhaust air from an autoclave is high, and when it is introduced into a sterilization filter, moisture condenses and sterilization becomes impossible. It is essential to eliminate the negative effects of this high relative humidity.

This invention was made in view of the above circumstances, and eliminates the drawbacks of the exhaust system in conventional sterilization autoclave equipment, has excellent exhaust sterilization effect, and enables efficient processing, simple, and safe operation. The objective is to provide improved sterilization autoclave equipment.

(Means for Solving the Problems) The present invention solves the above problems by connecting a heating heater and a sterilizing filter to an exhaust treatment system in a wastewater sterilization autoclave facility, and installing a decompression vacuum device to the exhaust treatment system. To provide sterilization autoclave equipment characterized by:

(Function) With the above configuration, it is possible to prevent moisture condensation on the sterilization filter, suppress its deterioration, and improve the efficiency of high-pressure steam sterilization and treatment of the exhaust gas.

As biohazard prevention equipment, its safety is excellent.

(Example) Next, the equipment of this invention will be explained along with the drawings.

FIG. 1 shows an embodiment of the present invention.

As shown in this example, sterile autoclave equipment includes:
A heating heater (2), a temperature sensor (3), a pressure sensor (4),
It is also equipped with a water level sensor (5), etc. The autoclave (1) is connected to a pipe (6) for introducing contaminated water from hand washing and other wastewater sources, and a pipe (7) for discharging the sterilized wastewater to the outside.

The vapor phase part of the autoclave (1) is connected to the piping (8) of the exhaust treatment system, and for example, a vacuum filter box (12) containing a heater (11) is connected via valves (9) and (10). ing.

As shown in Figure 1, a vacuum filter box (1
2) also has a built-in sterile filter (13). Furthermore, these exhaust treatment systems include a reduced pressure vacuum device (14) that can reduce the internal pressure of the autoclave (1).
) will be established. Sterile filter (13) and decompression vacuum device? l
! An air valve (15) may be provided between <14>.

For example, in the waste water sterilization autoclave equipment of the present invention, which can be exemplified as above, contaminated water (A)
by the heater (2) in order to autoclave the
Since heating to approximately 121° C. and high-pressure steam sterilization is normally required, the autoclave (1) can be heated to approximately -700 ohm89 by means of a reduced pressure vacuum device (14).
Reduce the internal pressure in advance.

The air (B) exhausted at this time has an extremely high relative humidity level.

The heater (2) can have a capacity of, for example, 2K14, and the exhaust treatment system heater (11) can have a capacity of about 10,014. Of course, it can also be changed depending on the processing capacity of the autoclave (1).

The heater (11) and sterilization filter (13) can be detachably replaced. Further, the type of sterilization filter (13) may be selected depending on the processing level, and may be, for example, an HF or PA filter. The heater (11) and sterilization filter (13) may be integrated.

Table 1 shows the pressure, temperature, humidity, etc. during processing operations in this equipment. Temperature (TI) of air (B) at normal pressure (Pr = OmmHg) in autoclave (1)
The temperature was 17°C, and the relative humidity (Hl) was 89%. As is clear from Table 1, the relative humidity (H2) of the sterilizing filter (13) shown in FIG. 1 is at a significantly low level. Thereby, there is no dew condensation on the sterilization filter (13), and extremely good sterilization can be achieved.

At this time, the vacuum suction in the vacuum device (14) was set to 108j/1ain, and the internal pressure of the autogelape (1) was reduced to -700 nlHg.

Table 1 (Note) Heater (2): 2 decoy heater < 11): 100W Decompression suction 108J 7m1n (Effects of the invention) With this invention, in conjunction with the internal pressure control of the autogelape, the sterilization filter can be removed without any trouble due to moisture condensation in the exhaust air. This enables highly efficient processing.

A highly safe and efficient means useful for biohazard countermeasures is realized.

[Brief explanation of the drawing]

FIG. 1 is a process system diagram showing an embodiment of the present invention. FIG. 2 is a conventional system diagram. 1... Autoclave 2... Heater 3... Temperature sensor 4... Humidity sensor 5... Water level sensor 6.7... Piping 8... Piping 9.10... Valve 1...・Heater 2...Vacuum filter box 3...Sterilizing filter 4...Reducing pressure vacuum equipment! 5... Air pulp 6... Vacuum pump water sealing tank

Claims (1)

[Claims] (1) A sterilizing autoclave facility for wastewater sterilization, characterized in that the exhaust treatment system is connected to a heating heater and a sterilization filter, and the exhaust treatment system is equipped with a decompression vacuum device.