Precise sludge discharge device and water purification system

Abstract

The invention discloses a precise sludge discharge device and a water purification system, and relates to the field of water purification, the precise sludge discharge device comprises a sludge discharge detector and a control system, the sludge discharge detector comprises a transparent pipe, a shading shell, a light-emitting part and a light intensity detection part, one end of the transparent pipe is used for being installed at a sludge discharge port and located at the downstream of a sludge discharge valve, and the other end of the transparent pipe is used for being installed at the downstream of the sludge discharge valve; the shading shell is fixedly arranged outside the transparent tube in a sleeving mode and used for preventing an external light source from entering the transparent tube, the light-emitting component and the light intensity detection component are arranged on the two sides in the shading shell respectively, the light intensity detection component is connected with the control system, and the control system is used for controlling the sludge discharging valve to be closed according to light intensity data collected by the light intensity detection component. The problem that the overall water production rate of a water purification plant is reduced due to the fact that the water content of discharged sludge of the water purification plant is too high is solved, and power consumption and chemical consumption are prevented from being increased.

Description

Technical Field

[0001] The present invention relates to the field of water purification, and particularly to a precise sludge discharge device and a water purification system. Background Art

[0002] In the water purification process of a water purification plant, the sedimentation process section is located after the flocculation process section. The raw water is added with PAC, PAM or other flocculants, so that the suspended solids, microorganisms and some dissolved substances in the raw water and other fine particles aggregate to form "floccules". The "floccules" settle in the conical mud bucket at the bottom of the sedimentation tank in the sedimentation process section. When the accumulated amount reaches a certain level, sludge discharge treatment is required. Sediments also appear at the bottom of the flocculation tank, and sludge discharge treatment is required when the accumulated amount reaches a certain level.

[0003] Currently, most water purification plants adopt the installation of electric or pneumatic valves, which are controlled by PLC to open and close regularly to achieve automatic sludge discharge. However, due to the changes in water turbidity, seasonal changes (such as the high turbidity period in the rainy season) and the changes in water production volume, it is difficult to determine the interval time and the duration of each sludge discharge. In order to ensure that each sludge discharge can be carried out thoroughly, the usual practice is to extend the sludge discharge duration, but this will also cause the phenomenon of too high moisture content of the discharged sludge. Some designs will design a reflux measure in order to reduce water waste, such as separately setting a clarifier and returning the supernatant to the flocculation tank for further treatment, but this will also increase power consumption and chemical consumption. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a precise sludge discharge device and a water purification system, which solve the problem that the moisture content of the discharged sludge in the water purification plant is too high, resulting in the overall water production rate of the water purification plant decreasing, and avoid increasing power consumption and chemical consumption.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a precise sludge discharge device, including a sludge discharge detector and a control system. The sludge discharge detector includes a transparent tube, a light-shielding outer shell, a light-emitting component and a light intensity detection component. One end of the transparent tube is used to be installed at the sludge discharge port and is located downstream of the sludge discharge valve. The light-shielding outer shell is fixedly sleeved outside the transparent tube and is used to prevent external light sources from entering the transparent tube. The light-emitting component and the light intensity detection component are respectively arranged on both sides in the light-shielding outer shell. The light intensity detection component is connected to the control system, and the control system is used to control the closing of the sludge discharge valve according to the light intensity data collected by the light intensity detection component.

[0007] Preferably, the sludge discharge detector further includes a sludge discharge pipe, and the sludge discharge pipe is connected to the end of the transparent tube far from the sludge discharge port. The sludge discharge pipe is made of opaque material.

[0008] Preferably, the transparent tube is a UPVC transparent tube.

[0009] Preferably, the light-shielding housing is a stainless steel encapsulation housing.

[0010] Preferably, the light-emitting component is an LED lamp.

[0011] Preferably, the light intensity detection component is a light intensity sensor.

[0012] The present invention also provides a water purification system, which includes a flocculation tank, a sedimentation tank, a V-shaped filter tank and a precise sludge discharge device. The flocculation tank, the sedimentation tank and the V-shaped filter tank are connected in sequence. The bottoms of the flocculation tank and the sedimentation tank both have the sludge discharge ports. A sludge discharge valve and a sludge discharge detector are sequentially arranged at each sludge discharge port. One end of the transparent tube of each sludge discharge detector is installed at a sludge discharge port, and each sludge discharge valve is connected to the control system.

[0013] Preferably, it further includes a water inlet pipe for introducing raw water into the flocculation tank. A turbidity analyzer is arranged on the water inlet pipe. The turbidity analyzer is connected to the control system and is used to detect the turbidity of the raw water in the water inlet pipe.

[0014] Preferably, the control system includes a PLC controller, an operation panel and a plurality of intermediate relays. The operation panel is connected to the PLC controller. Each sludge discharge valve is connected to the PLC controller through an intermediate relay. The turbidity analyzer and each light intensity detection component are connected to the PLC controller.

[0015] Preferably, the sludge discharge valve is an electric valve or a pneumatic valve.

[0016] The present invention has achieved the following technical effects compared with the prior art:

[0017] The precise sludge discharge device of the present invention includes a sludge discharge detector and a control system. The sludge discharge detector includes a transparent tube, a light-shielding housing, a light-emitting component and a light intensity detection component. One end of the transparent tube is used to be installed at the sludge discharge port and is located downstream of the sludge discharge valve. The light-shielding housing is fixedly sleeved outside the transparent tube. The light-emitting component and the light intensity detection component are respectively arranged on both sides in the light-shielding housing. The light intensity detection component is connected to the control system. When sludge discharge starts after the sludge discharge valve is opened, the light intensity detection component detects the light intensity in real time and transmits the light intensity data to the control system. When the detected light intensity data reaches the set value, the control system timely closes the sludge discharge valve, thereby enabling precise sludge discharge, avoiding incomplete sludge discharge, and avoiding excessive sludge discharge resulting in too high water content of the discharged sludge. It solves the problem that the water content of the sludge discharged from the water purification plant is too high, causing a decrease in the overall water production rate of the water purification plant, reduces the waste of water resources, and does not require a reflux measure, avoiding an increase in power consumption and chemical consumption. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is an installation schematic diagram of the precise sludge discharge device provided by the present invention;

[0020] Figure 2 It is a top view of the water purification system provided by the present invention.

[0021] Explanation of reference numerals: 1, transparent tube; 2, light-shielding outer shell; 3, light-emitting component; 4, light intensity detection component; 5, sludge discharge pipe; 6, sludge discharge valve; 7, PLC controller; 8, intermediate relay; 9, water inlet pipe; 10, turbidity analyzer; 11, flocculation tank; 12, sedimentation tank; 13, V-shaped filter tank; 14, unit total control cabinet. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] The purpose of the present invention is to provide a precise sludge discharge device and a water purification system, which solve the problem that the sludge discharge moisture content in the water purification plant is too high, resulting in a decrease in the overall water production rate of the water purification plant, and avoid increasing power consumption and chemical consumption.

[0024] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0025] Embodiment 1:

[0026] Such as Figure 1As shown in the figure, this embodiment provides a precise sludge discharge device, which includes a sludge discharge detector and a control system. The sludge discharge detector includes a transparent tube 1, a light-shielding outer shell 2, a light-emitting component 3, and a light intensity detection component 4. One end of the transparent tube 1 is used to be installed at the sludge discharge port and is located downstream of the sludge discharge valve 6. The light-shielding outer shell 2 is fixedly sleeved outside the transparent tube 1 and is used to prevent external light sources from entering the transparent tube 1, thereby avoiding the influence of external light sources. The light-emitting component 3 and the light intensity detection component 4 are respectively arranged on both sides in the light-shielding outer shell 2. The light-emitting component 3 is used to emit light towards the transparent tube 1 inside the light-shielding housing, and the light intensity detection component 4 detects the light intensity in real time on the other side of the transparent tube 1. The light intensity detection component 4 is connected to the control system, and the control system is used to control the closing of the sludge discharge valve 6 according to the light intensity data collected by the light intensity detection component 4.

[0027] When sludge discharge starts after the sludge discharge valve 6 is opened, the light intensity detection component 4 detects the light intensity in real time and transmits the light intensity data to the control system. Specifically, when the light intensity data detected by the light intensity detection component 4 is small, it indicates that the sludge concentration is high; when the light intensity data detected by the light intensity detection component 4 is large, it indicates that the sludge concentration is low. When the detected light intensity data reaches the set value, the control system timely closes the sludge discharge valve 6, thereby enabling precise sludge discharge, avoiding incomplete sludge discharge, and avoiding excessive sludge discharge resulting in too high moisture content of the discharged sludge. It solves the problem that the moisture content of the discharged sludge in the water purification plant is too high, causing a decrease in the overall water production rate of the water purification plant, reduces the waste of water resources, and does not require a reflux measure, avoiding an increase in power consumption and chemical consumption.

[0028] Specifically, the sludge discharge detector further includes a sludge discharge pipe 5, and the sludge discharge pipe 5 is connected to the end of the transparent tube 1 far from the sludge discharge port. The sludge discharge pipe 5 is made of an opaque material.

[0029] The sludge discharge pipe 5 in this embodiment includes a horizontal pipe and a vertical pipe arranged at the lower part of one end of the horizontal pipe. The end of the horizontal pipe far from the vertical pipe is connected to the transparent tube 1.

[0030] Specifically, the light-emitting component 3 and the light intensity detection component 4 are respectively arranged on both sides of the inner wall of the light-shielding outer shell 2.

[0031] The light-emitting component 3 in this embodiment is connected to the control system, and the control system can control the opening and closing of the light-emitting component 3.

[0032] In this specific embodiment, the transparent tube 1 is a UPVC transparent tube.

[0033] In this specific embodiment, the light-shielding outer shell 2 is a stainless steel encapsulation shell.

[0034] In this specific embodiment, the light-emitting component 3 is an LED lamp.

[0035] In this specific embodiment, the light intensity detection component 4 is a light intensity sensor.

[0036] In this embodiment, the transparent pipe 1, the light-shielding housing 2, the light-emitting component 3, the light intensity detection component 4, and the sludge discharge pipe 5 are of an integral structure, that is, the entire sludge discharge detector is of an integral structure, thereby facilitating its installation. Specifically, in this embodiment, flanges or clamps are used to install the sludge discharge detector at the sludge discharge port.

[0037] Embodiment Two:

[0038] As Figure 2 shown, this embodiment provides a water purification system, including a flocculation tank 11, a sedimentation tank 12, a V-shaped filter tank 13, and a precise sludge discharge device. The flocculation tank 11, the sedimentation tank 12, and the V-shaped filter tank 13 are connected in sequence. The bottoms of the flocculation tank 11 and the sedimentation tank 12 are both provided with sludge discharge ports. A sludge discharge valve 6 and a sludge discharge detector are sequentially arranged at each sludge discharge port. One end of the transparent pipe 1 of each sludge discharge detector is installed at a sludge discharge port, and each sludge discharge valve 6 is connected to the control system.

[0039] The sludge discharge detector in this embodiment is arranged outside the flocculation tank 11 or the sedimentation tank 12, facilitating its cleaning and maintenance.

[0040] This embodiment also includes a water inlet pipe 9 for introducing raw water into the flocculation tank 11. A turbidity analyzer 10 is arranged on the water inlet pipe 9. The turbidity analyzer 10 is connected to the control system and is used to detect the turbidity of the raw water in the water inlet pipe 9.

[0041] Specifically, the control system includes a PLC controller 7, an operation panel, and a plurality of intermediate relays 8. The operation panel is connected to the PLC controller 7 and is used to monitor the system status and set some key parameters. Each sludge discharge valve 6 is connected to the PLC controller 7 through an intermediate relay 8. The turbidity analyzer 10 and each light intensity detection component 4 are both connected to the PLC controller 7. The PLC controller 7 is mainly used to collect light intensity data, turbidity data, and control the opening and closing of the sludge discharge valve 6. At the same time, a communication port is reserved to communicate with the unit master control cabinet 14 to form a linkage.

[0042] The light-emitting component 3 in this embodiment is connected to the PLC controller 7, and the PLC controller 7 can control the opening and closing of the light-emitting component 3.

[0043] The control system in this embodiment also includes a control cabinet housing. The operation panel is arranged on the front side of the control cabinet housing, and the PLC controller 7 and a plurality of intermediate relays 8 are both arranged inside the control cabinet housing.

[0044] The PLC controller 7 in this embodiment is connected to the unit master control cabinet 14 and can receive control commands issued by the unit master control cabinet 14, such as sludge discharge signals, etc.

[0045] In this specific embodiment, the sludge discharge valve 6 is an electric valve or a pneumatic valve.

[0046] In this embodiment, a plurality of sludge discharge ports are provided on one side of the bottom of the flocculation tank 11 and one side of the bottom of the sedimentation tank 12, and the axial direction of the sludge discharge ports extends along the horizontal direction.

[0047] This embodiment includes one flocculation tank 11, two sedimentation tanks 12 and four V-shaped filter tanks 13. The water inlet pipe 9 is connected to the inlet of the flocculation tank 11. The outlets on both sides of the upper part of the flocculation tank 11 are respectively connected to the inlets of the two sedimentation tanks 12. The two outlets on the upper part of each sedimentation tank 12 are respectively connected to the inlets of the two V-shaped filter tanks 13.

[0048] The specific working process is as follows: Raw water enters the flocculation tank 11 through the water inlet pipe 9. During this process, the turbidity analyzer 10 detects the turbidity of the raw water. The raw water is added with PAC, PAM or other flocculants in the flocculation tank 11, so that tiny particles such as suspended solids, microorganisms and some dissolved substances in the raw water coagulate to form "floccules". The "floccules" enter the sedimentation tank 12 through the outlet at the upper part of the flocculation tank 11 and the inlet of the sedimentation tank 12, and precipitate at the bottom of the sedimentation tank 12. At the same time, sediments also gradually appear at the bottom of the flocculation tank 11.

[0049] There are the following two operation modes for the sludge discharge interval time of the sedimentation tank 12 or the flocculation tank 11.

[0050] The first one is to communicate with the unit master control cabinet 14 in real time. After receiving the sludge discharge signal sent by the unit master control cabinet 14, the sludge discharge valve 6 is opened for sludge discharge. When the sludge concentration detector detects that the sludge concentration becomes lower and reaches the set value, the sludge discharge valve 6 is closed.

[0051] The second one is to collect the influent turbidity in real time through the turbidity analyzer 10, judge the sludge discharge interval time according to the influent turbidity, open the sludge discharge valve 6 for sludge discharge after reaching the sludge discharge interval time, and close the sludge discharge valve 6 when the sludge concentration detector detects that the sludge concentration becomes lower and reaches the set value.

[0052] In this specification, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A precise mud discharge device, characterized in that: It includes a mud discharge detector and a control system. The mud discharge detector includes a transparent tube, a light-shielding shell, a light-emitting component and a light-intensity detection component. One end of the transparent tube is used to be installed at the mud discharge port and is located downstream of the mud discharge valve. The light-shielding shell is fixedly sleeved on the outside of the transparent tube and is used to prevent external light sources from entering the transparent tube. The light-emitting component and the light-intensity detection component are respectively arranged on both sides of the light-shielding shell. The light-intensity detection component is connected to the control system, and the control system is used to control the closure of the mud discharge valve according to the light intensity data collected by the light intensity detection component.

2. The precise mud discharge device according to claim 1, characterized in that: The mud discharge detector also includes a mud discharge pipe, which is connected to an end of the transparent tube away from the mud discharge port, and the mud discharge pipe is made of opaque material.

3. The precise mud discharge device according to claim 1, characterized in that: The transparent tube is a UPVC transparent tube.

4. The precise mud discharge device according to claim 1, characterized in that: The light-shielding shell is a stainless steel packaging shell.

5. The precise mud discharge device according to claim 1, characterized in that: The light emitting component is an LED lamp.

6. The precise mud discharge device according to claim 1, characterized in that: The light intensity detection component is a light intensity sensor.

7. A water purification system, characterized in that: It comprises a flocculation tank, a sedimentation tank, a V-type filter tank and a precise mud discharge device as described in any one of claims 1 to 6, wherein the flocculation tank, the sedimentation tank and the V-type filter tank are connected in sequence, the bottoms of the flocculation tank and the sedimentation tank are provided with mud discharge ports, each of the mud discharge ports is provided with a mud discharge valve and a mud discharge detector in sequence, one end of the transparent tube of each mud discharge detector is installed at a mud discharge port, and each mud discharge valve is connected to the control system.

8. The water purification system according to claim 7, characterized in that: It also includes a water inlet pipe for introducing raw water into the flocculation tank. A turbidity analyzer is arranged on the water inlet pipe. The turbidity analyzer is connected to the control system and is used to detect the turbidity of the raw water in the water inlet pipe.

9. The water purification system according to claim 8, characterized in that: The control system includes a PLC controller, an operation panel and multiple intermediate relays. The operation panel is connected to the PLC controller, each mud discharge valve is connected to the PLC controller through an intermediate relay, and the turbidity analyzer and each light intensity detection component are connected to the PLC controller.

10. The water purification system according to claim 7, characterized in that: The mud discharge valve is an electric valve or a pneumatic valve.

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