JPS6245600Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a microbial monitoring system that enables the status of microorganisms in wastewater to be monitored without immersing a television camera in water by providing an optical glass body or the end of an optical fiber in the liquid contact part. Regarding monitors.

Conventionally, in biological treatment of sewage, human waste, etc., sewage (e.g., aeration tank mixture of activated sludge treatment)
When monitoring the status of microorganisms in wastewater, a common method is to sample the wastewater and observe it under a microscope. However, this method requires a lot of effort and
It was also difficult for multiple people to view at the same time.
As a method to solve this problem, there is a microorganism monitoring monitor disclosed in Utility Model Application No. 1971-1982 filed by the present inventor.
This is achieved by immersing a waterproof box with a built-in television camera in waste water, and by providing a micro-container with pressure piping connected to the liquid-contacted outer wall of the observation window, the water can be removed from the waste water without being affected by the flow of the waste water. The microorganisms inside can be monitored with stable and clear images, and the waste water inside the micro-container can be easily replaced and cleaned. However, the above-mentioned microbial monitoring monitor requires a large-scale device to be immersed in waste water, and has problems such as being difficult to manufacture and requiring a lot of effort to maintain.

This invention was made to eliminate the above-mentioned drawbacks, and by immersing only a part of the wetted part, which is made of optical glass or optical fiber, into waste water, the television camera can be submerged in waste water. The purpose of the present invention is to provide a microbial monitoring monitor that can monitor microorganisms without immersing the device in water and improve the reliability and maintenance of the device.

An embodiment of this invention will be described below with reference to the drawings. In Fig. 1, reference numeral 1 denotes a liquid-contacting part that penetrates through the wall around a tank 5 that stores wastewater and performs aeration treatment, and is a cylindrical part in which the refractive index is distributed parabolically from the central axis to the outer circumferential surface. Optical glass body 1a
It is formed of. Its diameter is usually about 0.5 to 5 mm.

A micro-container 2 with one end open is provided on the dirty water side end surface of the liquid contact section 1, and a pressure pipe 3 through which air, water, sewage, etc. flows is communicated within the micro-container 2. The television camera 4 placed close to the liquid contact part 1 focuses on the end surface of the liquid contact part 1 opposite to the dirty water side using an attached objective lens 4a, and transmits the monitor signal obtained here. It is connected to monitor TV 6. The monitor television 6 enlarges and projects the microorganisms photographed by the television camera 4, so that they can be observed simultaneously by a plurality of people. The TV camera 4 has a micro container 2.
A light source 4b for illuminating the inside and an optical system 4c for guiding light from the light source 4b into the microcontainer 2 and guiding an image to the television camera 4 are provided.

FIG. 2 is a cross-sectional view of the liquid contact part 1, and FIG. 3 is a perspective view thereof. The micro-container 2 is detachably provided on the side wall of the liquid-contacting part 1, and has a sample chamber 2a communicating with the waste water. Further, a reflector 2b is installed at a portion of the microcontainer 2 facing the optical glass body 1a. In this example, a screw is tightened around the reflector 2b, and is screwed into the side wall of the microcontainer 2 in a detachable manner.

The shape of the sample chamber 2a is such that the thickness a is preferably within 3 mm and the length b is 5 mm or more so as not to be affected by the flow of waste water.

The sample chamber 2a is supplied with air, water, sewage, etc. under pressure, or
Since the pressure piping 3 for suctioning the sewage inside is connected, the sewage can be appropriately exchanged and the inside of the sample chamber 2a can be effectively cleaned. It is preferable to use a submersible pump as the means for supplying the sewage, and when suctioning the sewage, it is preferable to introduce the sewage into an aspirator to generate negative pressure.

The operation of the present invention having the above configuration will be explained next. Since the sewage to be monitored is surrounded by a partially open peripheral wall in the sample chamber 2a of the microcontainer 2, it is not affected by the sewage around the microcontainer 2 even if it is flowing. The sewage in the sample chamber 2a is illuminated by the light source 4b of the television camera 4 and the reflector 2b of the microcontainer 2, and microorganisms in the sewage are imaged on the cylindrical end surface of the optical glass body 1a.
This image is transmitted to the other end facet as a real image with the same magnification due to the refractive index distribution unique to the optical glass body 1a.
An optical system 4c having an objective lens 4a of the television camera 4 focuses on this end face, and the optical system 4c
Photographing is performed with the main body of the television camera 4 via the. As a result, microorganisms and the like are directly enlarged on the monitor television 6 and visualized continuously. Note that it is better to optically magnify the image to some extent before shooting.

According to the experimental results of the present inventor, the image obtained through the optical lens 1a as described above was very clear.

Also, during observation, by supplying air, water, sewage, etc. under pressure through the pressure piping 3 connected to the sample chamber 2a, or suctioning sewage, the sample liquid can be forcibly exchanged and the sample chamber 2a can be cleaned. , a clear image can be obtained.

In the above embodiment, the optical glass body 1a is used for the liquid contact part 1, but instead of this, an image guide 1b as shown in FIG. 4 may be used. If an objective lens 1c is attached to the tip of this image guide 1b, the same effect as in the case of using the optical glass body 1a described above can be obtained.

The image guide 1b is made up of a bundle of optical fibers that utilize the properties of light to travel straight and reflect when it hits an object. This optical fiber can be bent, and the image guide 1b can be suspended from the top of the sewage tank for observation as shown in FIG. 5a. The hanging state of the tip of the image guide 1b in Figure 5a is shown in Figure 5.
Shown in Figure b.

Further, in the above embodiment, the light source 4b is replaced by the television camera 4.
Although it is attached to the sample chamber 2a, it may be placed near the sample chamber 2a, or the light may be transmitted through an optical fiber or the like and irradiated onto the sample chamber 2a.

The television camera 4 in the above embodiment can of course be used as an immersion type by being housed in a waterproof box.

As described above, this invention not only eliminates the need for sampling, but also allows for easy cleaning of micro-containers, as well as a mechanism for observing microorganisms without being affected by the flow of sewage, etc. Not only is the structure simple, but by immersing only the wetted part with the optical glass body in water, there is no need to immerse precision equipment such as television cameras in water, increasing the reliability of the equipment and improving focus adjustment. etc. can be carried out freely, and there are extremely excellent effects such as no need for large-scale waterproof boxes, etc., and maintenance management becomes extremely easy.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing a partial sectional view of one embodiment of this invention, Fig. 2 is a sectional view of the same main part, Fig. 3 is a perspective view of the main part, and Fig. 4 is another embodiment of this invention. FIG. 5, which is a sectional view of an example image guide, shows a state diagram of the main parts. 1...liquid contact part, 1a...optical glass body, 1b...
...Image guide, 1c...Objective lens, 2...
Microcontainer, 2a...Sample chamber, 2b...Reflector, 3...Pressure piping, 4...TV camera, 4a
...Objective lens, 4b...Light source, 4c...Optical system, 5...Tank, 6...Monitor TV. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] The end face is immersed in waste water, and the liquid contact part is formed of a cylindrical optical glass body or optical fiber bundle whose refractive index is distributed parabolically from the central axis to the outer circumferential surface, and the liquid contact part is installed on the liquid surface side of the liquid contact part. a micro-container that is connected to the sewage, and a pressure pipe that is connected to the micro-container and flows pressurized air, water, sewage, etc.;
A microorganism monitoring monitor comprising a television camera focused on the vicinity of the other end surface of the liquid contacting part.