JPH1076248A - Underwater monitoring apparatus in waste water treatment tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply prevent the monitoring from being obstructed by the adhesion of a microorganism or various contaminants in a waste water treatment tank to the monitoring surface of a monitor device when the monitor device is immersed in water of the waste water treatment tank to monitor the underwater state of the tank. SOLUTION: An underwater monitor apparatus is constituted of a monitor part 10 having the monitor device 11 immersed in the water of a waste water treatment tank to monitor an underwater state built therein, a cover 12 having an upper wall 14 and housing the monitor part in an up and down movable manner and opened at the lower end thereof, the cylindrical part 15 vertically provided on the upper wall of the cover to protrude from the surface of water at the upper end thereof, the liftable wire 16 piercing through the cylindrical body and connected to the monitor part at the lower end thereof and the rubbing washing member 13 provided to the inner periphery of the cover to be brought into slide contact with the outer periphery of the monitor part. When monitoring is completed and the monitor part is drawn up by the wire to be housed in the cover, the rubbing washing member 13 provided to the inner periphery of the cover comes into slide contact with the outer periphery of the monitor part to remove a bonded microorganism or a contaminant and, therefore, the monitor part 10 is housed in the cover in such a state that the microorganism or the contaminant is not bonded to the monitor part 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor for immersing a monitor for monitoring the state of the water in the water of a wastewater treatment tank. Field of the Invention The present invention relates to an underwater monitoring device for ascertaining a situation in a tank such as an interface of a tank.

[0002]

2. Description of the Related Art In order to grasp the properties, concentration and floating state of sludge in a biological treatment tank typified by an aeration tank for activated sludge treatment, as well as the state of the sludge in a sedimentation tank and the interface inside the tank, an optical system is installed inside the tank. It is often used to immerse a mechanical sensor or an ultrasonic sensor. In recent years, a CCD camera or an imaging unit of a fiberscope has been immersed for directly observing the inside of the tank.

[0003]

The biggest problem in immersing the above-mentioned various sensors and a monitoring device such as an image pickup unit such as a camera in a tank is that the microorganisms in the tank and various types of various types are placed on the monitoring surface of the monitoring device. Of the contaminants and hinders measurement and observation.Generally, the monitoring surface of the monitor is wiped with a wiper or brush, or high-pressure washing water is sprayed on the monitoring surface, It is necessary to irradiate ultrasonic waves or to combine some of these means to remove microorganisms and contaminants attached to the monitor surface of the monitor. However, if these means are performed while the monitor is immersed in water, the apparatus becomes large-scale and there is a problem that the cleaning effect cannot be confirmed. For this reason, at present, the monitor is taken out of the tank and manually washed outside the tank, so it takes a lot of trouble to take out the monitor from the tank, wash it, and soak it after washing.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention is to prevent various microorganisms and contaminants from adhering, and to immerse various sensors and monitoring units such as an imaging unit in the tank water so as to be able to ascend and descend. Then, after the observation was completed, it was raised, and at the time of the ascent, the monitor was scrubbed to remove the attached microorganisms and contaminants.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Therefore, an underwater monitoring device for a wastewater treatment tank according to the present invention has a monitoring section having a built-in monitor for monitoring the water immersed in the water of the wastewater treatment tank, and an upper wall. A cover having an open lower surface for accommodating the monitoring unit so as to be vertically movable, a cylindrical body erected on the upper wall of the cover and having an upper end projecting above the water surface, and a lower end penetrating through the cylindrical body to monitor the lower end. And a scrubbing member provided on the inner periphery of the cover and slidably in contact with the outer periphery of the monitoring unit.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, reference numeral 10 denotes a cylindrical transparent monitoring unit made of glass or acrylic resin, in which a monitoring unit 11 such as various sensors and an image pickup unit of a camera is sealed in a lower portion thereof. Numeral 12 denotes a cylindrical cover having an open bottom surface in which the monitoring unit is accommodated so as to be vertically movable, and the monitoring unit 10 can protrude downward from the open lower surface of the cover. The cover is made of, for example, hard vinyl chloride resin, and a scrubbing member 13 such as a brush that is in sliding contact with the outer periphery when the monitoring unit 10 moves up and down is provided on the inner periphery.

The cover 12 is supported at a predetermined position below the water surface by a support member 18 such as a column standing from the bottom of the wastewater treatment tank. An upwardly facing cylindrical body 15 communicating with the inside of the cover is erected on the upper wall 14 of the cover, and the upper end of the cylindrical body is positioned on the water surface.

Reference numeral 16 denotes a wire which penetrates through the cylindrical body and has a lower end connected to the monitoring unit 10. The wire is installed, for example, on the upper part of the cylindrical body and can be moved up and down by a reel 19 driven by a motor 20. .

When not observing the condition in the tank, FIG.
As shown in (A), the monitoring unit 10 is pulled up by the wire 16 and housed inside the cover 13. Therefore, the microorganisms in the tank and various contaminants do not adhere to the outer peripheral surface or the upper surface of the monitoring unit.

When grasping the condition in the tank, the wire 16 is lowered, and the lower half of the monitoring section having the monitoring device 11 is projected downward from the open lower surface of the cover. This allows the monitor to monitor the condition inside the tank.However, if monitoring is performed for a long time, microorganisms and various contaminants in the tank will adhere to the outer surface of the monitor that protrudes downward from the lower end of the cover. I do. But,
When the monitoring is finished and the monitoring unit is pulled up with a wire and housed inside the cover, the scrubbing member 13 provided on the inner periphery of the cover slides on the outer periphery of the monitoring unit and removes attached microorganisms and contaminants. The monitoring unit 10 is accommodated in the cover in a state where microorganisms and contaminants do not adhere.

In the illustrated embodiment, the weight 17 is suspended under the monitoring unit 10 so that the monitoring unit 10 moves vertically up and down to smoothly enter and exit the cover 13 from below. It is also possible to attach a weight plate to the unit to form an integral unit.

[0012]

The monitoring section with the built-in monitoring device is accommodated in a cover immersed and supported below the water surface when not in use, so that microorganisms and various contaminants in the tank do not adhere. Only at the time of monitoring, the part protruding from under the cover
Although exposed to various contaminants, when the monitor is lifted into the inside of the cover after the monitoring, the scrubbing member on the inner periphery of the cover scrubs and removes microorganisms and various contaminants attached to the monitor. Therefore, since the dirt hardly accumulates in the monitoring unit, the measurement accuracy of the monitoring device can be maintained for a long period of time.

As described above, in the present invention, there is no need to pull out the monitoring unit from the processing tank in order to clean the monitoring unit. For this reason, it is possible to automate measurement and maintenance work without the need for a large-scale device, for example, a device that raises the monitoring unit above the water to wash it, or a pipe that sends cleaning water or chemicals to the monitoring unit drawn out of the tank. . In addition, there is an effect that maintenance is easy because there is no driving unit in the water in the tank and no chemical or water is required for cleaning the monitoring unit.

[Brief description of the drawings]

FIG. 1A is an explanatory view showing a non-monitoring state, and FIG. 1B is a partially sectional view showing a monitoring state.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 monitoring unit 11 monitor 12 cover 13 scrubbing member on inner circumference of cover 14 top wall of cover 15 cylindrical body 16 wire 17 weight 18 cover support member 19 reel 20 motor

Claims (1)

[Claims] A monitoring unit having a built-in monitoring device for monitoring the water immersed in the water of the wastewater treatment tank; a cover having an upper wall and having an open lower surface for accommodating the monitoring unit in a vertically movable manner;
A tubular body erected on the upper wall of the cover and having an upper end protruding above the water surface, a wire that can be lifted and lowered through the tubular body and has a lower end connected to the monitoring unit, and provided on the inner periphery of the cover. A scrubbing member that slides on the outer periphery of the monitoring unit.