CN114414443A

CN114414443A - Sludge settling performance monitoring device

Info

Publication number: CN114414443A
Application number: CN202210035790.1A
Authority: CN
Inventors: 王连杰; 李金河; 姜威; 赵立伟; 陈冬; 张麟; 彭金利; 王瀚卿
Original assignee: TIANJIN CAPITAL ENVIRONMENTAL PROTECTION GROUP CO Ltd
Current assignee: TIANJIN CAPITAL ENVIRONMENTAL PROTECTION GROUP CO Ltd
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-04-29

Abstract

The invention discloses a device and a method for monitoring sludge sedimentation performance. The sludge settlement performance monitoring device comprises: a box body; the sedimentation pipe is vertically arranged on one side in the box body and is used for sedimentation of sludge; the illuminating device and the camera device are respectively arranged at two sides of the sedimentation tube and are respectively used for providing a light source and recording images in the sedimentation tube; the water inlet and outlet pipe is connected with a water inlet and outlet arranged at the lower part of the sedimentation pipe; the mud pump is arranged on the water inlet and outlet pipe and used for inputting or outputting mud into or out of the settling pipe; and the ultrasonic cleaning probe is arranged at the lowest end of the sedimentation pipe and is used for outputting ultrasonic waves. The sludge settlement performance monitoring method comprises the following steps: a. cleaning; b. detecting; c. analyzing data; d. and (6) emptying and cleaning. The invention has the beneficial effects that: be equipped with sedimentation pipe, lighting device and camera device etc. in the box, can accurate detection mud settlement performance, and low cost is convenient for later maintenance.

Description

Sludge settling performance monitoring device

Technical Field

The invention relates to the field of sewage treatment, in particular to a sludge settlement performance monitoring device.

Background

The sludge sedimentation ratio (SV) is an important index for analyzing the sludge properties and the running condition of the whole system. Can discover the many problems of mud property through observing the settlement ratio, whether the supernatant is limpid, whether contain difficult suspension floc that sinks, floc particle size and compactness etc. can judge mud state and treatment effect according to the settlement ratio change among the sewage treatment plant operation process to take corresponding adjustment measure to improve, be an indispensable a ring in the daily operation management of water plant.

In a treatment station for treating sewage by an activated sludge method, a lot of factors influence the operation effect of a wastewater treatment process, and under the condition of lacking empirical data and related detection equipment support, an operation manager usually takes a sedimentation ratio as a main process parameter for guiding operation, judges the operation condition of the aeration tank process according to the sedimentation ratio, provides scientific basis for process adjustment, and controls the wastewater treatment effect.

The existing sludge settlement ratio detection device has the following defects: firstly, the sludge sedimentation curve and the sludge color cannot be recorded comprehensively due to the limitation of recording conditions such as light rays and image acquisition equipment on a working site. Secondly, the accuracy of the detection result is not high. In addition, the equipment is expensive, the data transmission requirement is high, and the maintenance and data processing cost of the cloud platform is high.

Therefore, a low-cost and high-detection-precision sludge sedimentation performance monitoring device becomes the key for solving the problems.

Disclosure of Invention

The invention aims to provide a sludge settling performance monitoring device, wherein a settling pipe, an illuminating device, a camera device and the like are arranged in a box body, so that the sludge settling performance can be accurately detected, and the device is low in cost and convenient for later maintenance.

The invention aims to provide a method for monitoring sludge sedimentation performance, which can accurately detect the sludge sedimentation performance and is low in cost and convenient for later maintenance.

In order to achieve the purpose, the invention adopts the following technical scheme that:

a case for shielding light;

the sedimentation pipe is vertically arranged on one side in the box body and is used for sedimentation of sludge;

the illuminating device is arranged on one side of the sedimentation pipe and is used for providing a surface light source;

the camera device is arranged on the other side of the sedimentation pipe, is opposite to the lighting device and is used for recording images in the sedimentation pipe; and

the water inlet and outlet pipe is connected with a water inlet and outlet arranged at the lower part of the sedimentation pipe;

the mud pump is arranged on the water inlet and outlet pipe and used for inputting or outputting mud into or out of the settling pipe;

the ultrasonic cleaning probe is arranged at the lowest end of the sedimentation pipe and is used for outputting ultrasonic waves;

the electric control magnetic valve is arranged on the water inlet and outlet pipe and is positioned between the mud pump and the water inlet and outlet;

and the controller is arranged on the inner wall of the box body at the opposite side of the lighting device, is respectively and electrically connected with the slurry pump, the electric control magnetic valve, the ultrasonic cleaning probe and the lighting device, and is used for controlling the on-off of the slurry pump, the electric control magnetic valve, the ultrasonic cleaning probe and the lighting device.

Preferably, the method further comprises the following steps:

and the overflow pipe is connected with a sludge overflow port at the upper end of the sedimentation pipe and is used for discharging excessive sewage in the sedimentation pipe.

Preferably, the method further comprises the following steps:

and the touch screen is arranged above the controller, is electrically connected with the controller and is used for inputting and outputting instructions.

Preferably, the lighting device includes:

a light source;

and the light homogenizing plate is arranged at the front end of the light source and used for converting a point light source of the light source into a surface light source.

Preferably, the sedimentation pipe is made of a high-boron glass pipe, the thickness of the high-boron glass pipe is 0.5-5 mm, and the light transmittance of the high-boron glass is more than or equal to 85%.

Preferably, the output frequency of the ultrasonic cleaning probe is 15-40 KHZ.

Preferably, the luminance of the lighting device is 1600-6000 nit, and the uniformity is more than or equal to 75%.

Preferably, the image pickup device is one of a CCD or a CMOS, the frame rate is 15-200 fps, and NR is more than or equal to 3.

A sludge settling performance monitoring method of the sludge settling performance monitoring device comprises the following steps:

a. starting a slurry pump to feed water into the settling pipe, and starting an ultrasonic cleaning probe; after the time is 5-40 seconds, the slurry pump is closed, and the time is delayed for 2-10 seconds; then starting a slurry pump to discharge water, emptying a water sample in the sedimentation pipe after the time is 5-40 seconds, and simultaneously closing the slurry pump and the ultrasonic cleaning probe; repeating for 1-3 times;

b. starting a slurry pump to feed water into the settling pipe, closing the slurry pump after the time is 5-40 seconds, and after the time is 5-30 seconds; starting the lighting device for 5-10 seconds; starting a camera device, and carrying out image acquisition and recording on the sludge sedimentation condition in the sedimentation pipe by the camera device for 5-40 minutes;

c. the camera device transmits the recorded data to the controller, and the controller analyzes the data recorded by the camera device to obtain the data of the sludge sedimentation performance;

d. starting a slurry pump to reversely discharge water, starting an ultrasonic cleaning probe, emptying a water sample in a sedimentation pipe after the time is 5-40 seconds, and closing the slurry pump and the ultrasonic cleaning probe; and starting a slurry pump to feed water, starting an ultrasonic cleaning probe, closing the slurry pump after the time duration of 5-40 seconds, starting the slurry pump to reversely discharge water after the time duration of 5-40 seconds, emptying a water sample in the sedimentation pipe after the time duration of 5-40 seconds, and closing the slurry pump and the ultrasonic cleaning probe.

The invention has the beneficial effects that: be equipped with sedimentation pipe, lighting device and camera device etc. in the box, can accurate detection mud settlement performance, and low cost is convenient for later maintenance.

Drawings

FIG. 1 is a perspective view of a device for monitoring sludge sedimentation performance according to the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings so that those skilled in the art can practice the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1, in an implementation form of the present invention, to achieve the above object, the present invention adopts the following technical solutions, including:

the box body 110 has a square structure, and has an accommodating space therein for shielding light.

The settling pipe 120 is vertically disposed at one side in the tank 110 for settling sludge. Preferably, the sedimentation tube 120 is made of a high-boron glass tube, the thickness of the high-boron glass tube is 0.5-5 mm, and the light transmittance of the high-boron glass is greater than or equal to 85%.

And an illumination device 130 disposed at one side of the settling tube 120 for providing a surface light source. A camera device 140 disposed at the other side of the settling tube 120, opposite to the illumination device 130, for recording an image inside the settling tube; as a preference, the illumination device 130 includes: a light source and a light-equalizing plate; the light homogenizing plate is arranged at the front end of the light source and used for converting a point light source of the light source into a surface light source. More preferably, the luminance of the lighting device is 1600-6000 nit, and the uniformity is more than or equal to 75%. More preferably, the image capturing device 140 is one of a CCD and a CMOS, and has a frame rate of 15 to 200fps and an NR & gt, 3 level.

And a water inlet/outlet pipe 151 connected to a water inlet/outlet 121 provided at a lower portion of the settling tube 120. And a mud pump 160 disposed on the water inlet/outlet pipe 151 for inputting or outputting the mud into or from the settling tube 120. And an ultrasonic cleaning probe 170 disposed at the lowermost end of the settling tube 120 for outputting ultrasonic waves. Preferably, the output frequency of the ultrasonic cleaning probe 170 is 15 to 40 KHZ.

And an electrically controlled magnetic valve 151a disposed on the water inlet/outlet pipe 151 and between the mud pump 160 and the water inlet/outlet port 121. And a controller 180 which is arranged on the inner wall of the box body at the opposite side of the illumination device, is electrically connected with the mud pump 160, the electric control magnetic valve 151a, the ultrasonic cleaning probe 170 and the illumination device 130 respectively, and is used for controlling the on-off of the mud pump 160, the electric control magnetic valve 151a, the ultrasonic cleaning probe 170 and the illumination device 130.

In another embodiment, the method further comprises: and an overflow pipe 152 connected to the sludge overflow port 122 at the upper end of the settling pipe, for discharging excessive sewage in the settling pipe.

In another embodiment, the method further comprises: and a touch screen 190 disposed above the controller 180 and electrically connected to the controller 180 for inputting and outputting commands.

In another embodiment, the illumination device 130 includes: a light source and a light-equalizing plate; the light homogenizing plate is arranged at the front end of the light source and used for converting a point light source of the light source into a surface light source. Preferably, the luminance of the lighting device is 1600-6000 nit, and the uniformity is more than or equal to 75%. More preferably, the image capturing device 140 is one of a CCD and a CMOS, and has a frame rate of 15 to 200fps and an NR & gt, 3 level.

In another embodiment, the sedimentation tube 120 is made of a high boron glass tube, the thickness of the high boron glass tube is 0.5-5 mm, and the light transmittance of the high boron glass is greater than or equal to 85%.

In another embodiment, the output frequency of the ultrasonic cleaning probe 170 is 15-40 KHZ.

In another embodiment, the luminance of the illumination device 130 is 1600 to 6000nit, and the uniformity is greater than or equal to 75%.

In another embodiment, the image capturing device 140 is one of a CCD or a CMOS, the frame rate is 15-200 fps, and NR ≧ 3 stages.

Example 1

a. Starting a slurry pump to feed water into the settling pipe, and starting an ultrasonic cleaning probe; after the time duration is 5 seconds, the slurry pump is closed, and the time delay is carried out for 10 seconds; then starting a slurry pump to discharge water, emptying a water sample in the sedimentation pipe after the time is 5 seconds, and simultaneously closing the slurry pump and the ultrasonic cleaning probe; repeating for 3 times;

b. starting a slurry pump to feed water into the settling pipe, closing the slurry pump after the time is 5 seconds, and after the time is 30 seconds; turning on the lighting device for 5 seconds; starting a camera device, and carrying out image acquisition and recording on the sludge sedimentation condition in the sedimentation pipe by the camera device for 40 minutes;

d. starting a slurry pump to reversely discharge water, starting an ultrasonic cleaning probe, emptying a water sample in a sedimentation pipe after the time is 5 seconds, and closing the slurry pump and the ultrasonic cleaning probe; and starting a slurry pump to feed water, starting an ultrasonic cleaning probe, closing the slurry pump after the time length of 40 seconds, starting the slurry pump to reversely discharge water after the time length of 5 seconds, emptying a water sample in the sedimentation pipe after the time length of 40 seconds, and closing the slurry pump and the ultrasonic cleaning probe.

Example 2

a. Starting a slurry pump to feed water into the settling pipe, and starting an ultrasonic cleaning probe; after the time duration is 40 seconds, the slurry pump is closed, and the time delay is carried out for 2 seconds; then starting a slurry pump to discharge water, emptying a water sample in the sedimentation pipe after the time is 5-40 seconds, and simultaneously closing the slurry pump and the ultrasonic cleaning probe; repeating for 1 time;

b. starting a slurry pump to feed water into the settling pipe, and closing the slurry pump after the time is 40 seconds and 5 seconds; turning on the lighting device for 10 seconds; starting a camera device, and carrying out image acquisition and recording on the sludge sedimentation condition in the sedimentation pipe by the camera device for 5 minutes;

d. starting a slurry pump to reversely discharge water, starting an ultrasonic cleaning probe, emptying a water sample in a sedimentation pipe after the time is 40 seconds, and closing the slurry pump and the ultrasonic cleaning probe; and starting a slurry pump to feed water, starting the ultrasonic cleaning probe, closing the slurry pump after the time length of 5 seconds, starting the slurry pump to reversely discharge water after the time length of 40 seconds, emptying a water sample in the sedimentation pipe after the time length of 5 seconds, and closing the slurry pump and the ultrasonic cleaning probe.

Example 3

a. Starting a slurry pump to feed water into the settling pipe, and starting an ultrasonic cleaning probe; after the time duration is 20 seconds, the slurry pump is closed, and the time delay is carried out for 8 seconds; then starting a slurry pump to discharge water, emptying a water sample in the sedimentation pipe after the time is 20 seconds, and simultaneously closing the slurry pump and the ultrasonic cleaning probe; repeating for 2 times;

b. starting a slurry pump to feed water into the settling pipe, closing the slurry pump after the time is 5-40 seconds, and after 20 seconds; turning on the lighting device for 8 seconds; starting a camera device, and carrying out image acquisition and recording on the sludge sedimentation condition in the sedimentation pipe by the camera device for 20 minutes;

d. starting a slurry pump to reversely discharge water, starting an ultrasonic cleaning probe, emptying a water sample in a sedimentation pipe after the time is 20 seconds, and closing the slurry pump and the ultrasonic cleaning probe; and starting a slurry pump to feed water, starting an ultrasonic cleaning probe, closing the slurry pump after the time length of 20 seconds, starting the slurry pump to reversely discharge water after the time length of 20 seconds, emptying a water sample in the sedimentation pipe after the time length of 20 seconds, and closing the slurry pump and the ultrasonic cleaning probe.

Evaluation of detection results:

1. sludge color

Sludge color	Evaluation of results
		Yellow, brown yellow	The aerobic activated sludge is normal.
Reddish and red	Activated sludge contains iron salts or other chemicals.
		Ash and ash	If an abnormal rise in dissolved oxygen occurs at the same time, it may be a sludge poisoning.
Yellow brown	Over-long age of sludge and aging of activated sludge.
		Black color	The dissolved oxygen is insufficient or the sludge is poisoned to cause dead sludge.

2. Sludge form

The color of the precipitate is dark and light, and the precipitate is glossy and vivid. The higher the activity of the activated sludge, the lighter the color and luster; the more aged the sludge, the darker the color and the lackluster; the sludge poisoning color is dark; the higher the load of the activated sludge, the lighter the color and luster; the filamentous fungi swell lightly and white; the higher the sludge concentration is, the darker the color is; the sludge denitrification color is bright.

3. State of precipitation

The sedimentation ratio can simulate the effect of a secondary sedimentation tank in a biochemical system, can reflect each stage of the sludge sedimentation process of the system, and provides possibility for finding problems of the biochemical system as soon as possible. The settling state of each stage is particularly important.

In the initial stage: the mixed liquid is in a complete mixing state, the flocculation state can be fast, and the clearance water is clear in the clearance of flocs;

free settling state: the floc settling process occurs;

the precipitation state of the group: the whole body sinks after the floc is accumulated;

and (3) compression and precipitation processes: the settling process is not obvious and the sludge layer is gradually compressed in thickness.

The settling property shows clear mud-water interface and integral precipitation in the stage from free precipitation to group precipitation. The reason is as follows: the lower the activity of the activated sludge, the better; the higher the sludge load, the better; poor when the aeration is excessive; the settling property of the poisoned sludge is poor; the filamentous fungi have good expansion and settling property but slow settling speed.

Sedimentation velocity: the higher the activity of the activated sludge, the better the sedimentation; the more the sludge is aged, the faster the sedimentation speed is; the higher the load of the activated sludge is, the slower the sedimentation speed is; the sludge expansion and sedimentation speed is slow; the higher the content of inert substances, the faster the settling rate.

Activated sludge floc particles are adhered to the wall of the sludge settling pipe due to the aging of the activated sludge; and (4) over aeration.

4. Definition of

5. Degree of rolling of precipitate

The activated sludge felt in a normal state is moderate; the activated sludge is obviously shown when being over-aged; the sludge is poisoned and does not have felt rolling property under high load.

6. Others

A. The floc (alum floc) is formed quickly, the shape of the alum floc is large, and the shape of the sludge is good;

B. the settling speed of the sludge is preferably about 80 percent of the settling process completed within 5 min;

C. the percentage of sludge settlement of general domestic sewage is preferably 15 to 30 percent of SV 30.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. The utility model provides a sludge settling performance monitoring devices which characterized in that includes:

a case for shielding light;

2. The device for monitoring sludge settling performance according to claim 1, further comprising:

3. The sludge settling performance monitoring apparatus according to claim 1 or 2, further comprising:

4. The sludge sedimentation performance monitoring apparatus according to claim 1 or 2, wherein the illumination means comprises:

a light source;

5. The sludge settling performance monitoring device according to claim 1 or 2, wherein: the sedimentation pipe is made of a high-boron glass pipe, the thickness of the high-boron glass pipe is 0.5-5 mm, and the light transmittance of the high-boron glass is larger than or equal to 85%.

6. The sludge settling performance monitoring device according to claim 1 or 2, wherein: the output frequency of the ultrasonic cleaning probe is 15-40 KHZ.

7. The sludge settling performance monitoring device according to claim 1 or 2, wherein: the luminance of the lighting device is 1600-6000 nit, and the uniformity is more than or equal to 75%.

8. The sludge settling performance monitoring device according to claim 1 or 2, wherein: the camera device is one of a CCD or a CMOS, the frame rate is 15-200 fps, and NR is more than or equal to 3 levels.

9. A method for monitoring sludge settling performance of the apparatus for monitoring sludge settling performance according to any one of claims 1 to 8, comprising the steps of: