Chemical wastewater treatment system

Abstract

The utility model relates to the technical field of chemical wastewater treatment, in particular to a chemical wastewater treatment system which comprises an industrial wastewater conveying system, a flocculant conveying system, a mixing box body, a precipitation pipeline and a discharge system. According to the utility model, by designing the pipeline type wastewater treatment system, solid precipitation is completed in the precipitation pipeline, so that poisonous and harmful gases generated in the process are prevented from overflowing, and the quality of air around the chemical wastewater treatment system is ensured; the structure of the sedimentation pipeline is further improved, a plurality of protruding parts and a plurality of sedimentation channels are arranged on the side face of the bottom of the corrosion-resistant pipeline at equal intervals, the sediment is stored through the arranged sedimentation channels, the bottom ends of the sedimentation channels are arranged to be openings, cover plates are installed, and the cover plates can be opened to discharge the sediment. The use is convenient, and sediments are easy to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical wastewater treatment, in particular to a chemical wastewater treatment system. Background Art

[0002] In the process of industrial production, sewage is inevitably generated; this sewage contains various organic matter and has a high COD level. Direct discharge will cause serious pollution to the soil and water environment.

[0003] The pipeline wastewater treatment system is a system in which all aspects of sewage treatment are designed within a pipeline (including the reaction tank connected by the pipeline). Each process of sewage treatment is completed in a closed environment, and the toxic and harmful gases generated are discharged together with the treated sewage at the outlet at the end of the pipeline wastewater treatment system. It only requires installing an air filter-adsorption device at the outlet at the end of the pipeline wastewater treatment system to achieve good waste gas recovery, thus solving the problem of a large amount of toxic and harmful gases being discharged into the air and affecting residents around the chemical plant.

[0004] The biggest disadvantage of the pipeline wastewater treatment system is that solid impurities are easily accumulated in the pipeline. After a period of use, the efficiency of sewage treatment will be greatly reduced. For this reason, the utility model provides a chemical wastewater treatment system. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a chemical wastewater treatment system.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A chemical wastewater treatment system, comprising:

[0008] Industrial wastewater conveying system, flocculant conveying system, mixing box, and discharge system. The industrial wastewater conveying system and flocculant conveying system are connected to the mixing box to convey the industrial wastewater and flocculant to the mixing box;

[0009] The mixing box and the discharge system are connected via a sedimentation pipeline, and the length of the sedimentation pipeline is not less than 3.5 meters;

[0010] The sedimentation pipeline includes: a corrosion-resistant pipeline, a plurality of protrusions are equidistantly arranged on the bottom side of the corrosion-resistant pipeline, a sedimentation area is formed inside the corrosion-resistant pipeline and between two adjacent protrusions, and a sedimentation channel corresponding to the sedimentation area one by one is fixedly connected to the bottom of the corrosion-resistant pipeline, the bottom end of the sedimentation channel is open, and a cover plate is fixedly installed on the bottom end of the sedimentation channel.

[0011] As a further description of the above technical solution:

[0012] The two sides of the protrusion are respectively a smooth slope and a steep slope, and the liquid flow direction inside the sedimentation pipe is from the smooth slope toward the steep slope.

[0013] As a further description of the above technical solution:

[0014] The industrial wastewater conveying system comprises: a first pump body and a first filter box which are connected in sequence through pipelines.

[0015] As a further description of the above technical solution:

[0016] The flocculant delivery system comprises: a flocculant storage tank and a second pump body which are sequentially connected through pipelines.

[0017] As a further description of the above technical solution:

[0018] The discharge system includes: a filter box and a collection tank. The liquid outlet of the filter box is connected to a T-shaped liquid outlet pipe, the top of the T-shaped liquid outlet pipe is connected to an air filter-adsorption device, and the bottom of the T-shaped liquid outlet pipe is inserted below the liquid level of the collection tank.

[0019] As a further description of the above technical solution:

[0020] It also includes: a cleaning pool, which is located below the sedimentation pipeline.

[0021] As a further description of the above technical solution:

[0022] The sedimentation pipeline is distributed in a square spiral.

[0023] As a further description of the above technical solution:

[0024] The sedimentation pipeline is S-shaped distribution.

[0025] The utility model has the following beneficial effects:

[0026] 1. Compared with the prior art, the chemical wastewater treatment system, by designing a pipeline wastewater treatment system, completes the precipitation of solids inside the sedimentation pipeline, avoids the overflow of toxic and harmful gases generated in the process, and ensures the air quality around the chemical wastewater treatment system; further improves the sedimentation pipeline structure, and arranges a plurality of protrusions and a plurality of sedimentation channels equidistantly on the bottom side of the corrosion-resistant pipeline, utilizes the arranged sedimentation channels to store sediment, and arranges the bottom end of the sedimentation channel to be an opening, and installs a cover plate, which can be opened to discharge the sediment, is convenient to use, and the sediment is easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an overall schematic diagram of a chemical wastewater treatment system proposed by the utility model;

[0028] Figure 2 This is a three-dimensional schematic diagram of a section of a sedimentation pipeline in a chemical wastewater treatment system proposed by the utility model;

[0029] Figure 3 This is a cross-sectional view of a section of a sedimentation pipeline in a chemical wastewater treatment system proposed by the utility model;

[0030] Figure 4 This is a first distribution diagram of a sedimentation pipeline of a chemical wastewater treatment system proposed by the utility model;

[0031] Figure 5 This is a second distribution diagram of the sedimentation pipeline of a chemical wastewater treatment system proposed by the utility model.

[0032] Legend:

[0033] 1. First filter box; 2. First pump body; 3. Second pump body; 4. Sedimentation pipe; 401. Corrosion-resistant pipe; 402. Protrusion; 403. Sedimentation area; 404. Sedimentation channel; 405. Cover plate; 5. Mixing box; 6. Flocculant storage tank; 7. Filter box; 8. T-shaped liquid outlet pipe; 9. Air filtration-adsorption device; 10. Collection tank; 11. Cleaning tank; a. Smooth slope; b. Steep slope. DETAILED DESCRIPTION

[0034] Reference Figure 1-Figure 5 The utility model provides a chemical wastewater treatment system, which includes: an industrial wastewater conveying system, a flocculant conveying system, a mixing box 5, a sedimentation pipeline 4 and a discharge system.

[0035] The industrial wastewater conveying system extracts the chemical wastewater that needs to be treated from the collection pool. The liquid outlet ends of the industrial wastewater conveying system and the flocculant conveying system are connected to the mixing box 5. The industrial wastewater conveying system and the flocculant conveying system work synchronously to convey flocculants and industrial wastewater in a certain proportion, and convey the industrial wastewater and flocculants to the mixing box 5 for contact mixing.

[0036] The mixing box 5 is connected to the discharge system through a sedimentation pipe 4. The length of the sedimentation pipe 4 is not less than 3.5M, which is used to ensure the flow time of the mixed liquid of flocculant and industrial wastewater in the sedimentation pipe 4. Generally, the flocculant and industrial wastewater are required to flow at a rate of 0.5-2m / s in the sedimentation pipe 4 (liquid flows at a low speed), and the liquid after sedimentation is discharged from the discharge system.

[0037] The sedimentation pipeline 4 includes: a corrosion-resistant pipeline 401, and a plurality of protrusions 402 are equidistantly arranged on the bottom side of the corrosion-resistant pipeline 401. When the fluid passes through the protrusions 402, the fluid is first accelerated and then decelerated. A sedimentation area 403 is formed inside the corrosion-resistant pipeline 401 and between two adjacent protrusions 402. The bottom of the corrosion-resistant pipeline 401 is fixedly connected with a sedimentation channel 404 corresponding to the sedimentation area 403 one by one. The bottom end of the sedimentation channel 404 is open, and a cover plate 405 is fixedly installed at the bottom end of the sedimentation channel 404.

[0038] The mixed liquid of flocculant and industrial wastewater flows inside the sedimentation pipe 4. When passing through several protrusions 402, the flow speed and flow direction of the liquid change. One of its purposes is to make some solid sedimentation particles fall into the sedimentation area 403, and then fall into the sedimentation channel 404 for storage. The second purpose is to mix the flocculant and industrial wastewater more evenly.

[0039] In one embodiment, the two sides of the protrusion 402 are respectively a smooth slope a and a steep slope b. The liquid flows in the sedimentation pipe 4 from the smooth slope a toward the steep slope b. When the liquid passes through the smooth slope a, the cross-sectional area of ​​the corrosion-resistant pipe 401 for liquid flow gradually decreases, and the flow rate of the liquid gradually increases (and the flow direction of the liquid is partially inclined upward). At the steep slope b, the flow rate of the liquid suddenly drops (and the flow direction of the liquid is partially inclined downward), so that some sediment sinks to the sedimentation area 403. The flow rate of the liquid in the sedimentation area 403 is slower, and finally this part of the sediment sinks into the sedimentation channel 404.

[0040] In one embodiment, the industrial wastewater transportation system includes: a first pump body 2 and a first filter box 1 which are connected in sequence through pipelines. The first pump body 2 pumps out the industrial wastewater, which enters the mixing box 5 after preliminary filtration in the first filter box 1.

[0041] In one embodiment, the flocculant delivery system includes: a flocculant storage tank 6 and a second pump body 3 which are connected in sequence through pipelines. The flocculant storage tank 6 is used to store flocculants. When the second pump body 3 is working, the flocculant in the flocculant storage tank 6 is pumped into the mixing box 5. A flow control valve can be set in the pipeline of the flocculant delivery system to appropriately control the flow of the flocculant delivery system according to the flow of the industrial wastewater delivery system, so that the flocculant and industrial wastewater are mixed in a certain proportion.

[0042] In one embodiment, the discharge system includes: a filter box 7 and a collection tank 10. The liquid outlet of the filter box 7 is connected to a T-shaped liquid outlet pipe 8. The top of the T-shaped liquid outlet pipe 8 is connected to an air filter-adsorption device 9. The bottom end of the T-shaped liquid outlet pipe 8 is inserted below the liquid level of the collection tank 10 so that no gas is discharged from the bottom end of the T-shaped liquid outlet pipe 8.

[0043] The liquid passing through the sedimentation pipe 4 enters the filter box 7 for final filtration, and then is discharged from the bottom end of the T-shaped liquid outlet pipe 8.

[0044] The mixed liquid flowing in the sedimentation pipe 4 will volatilize a certain amount of toxic and harmful gases. These gases flow with the liquid in the sedimentation pipe 4. At the T-shaped liquid outlet pipe 8, the gas flows from the top of the T-shaped liquid outlet pipe 8 into the air filter-adsorption device 9, and then the adsorbent (such as activated carbon) on the filter screen in the air filter-adsorption device 9 adsorbs some volatile substances in the air.

[0045] In one embodiment, it further includes: a cleaning pool 11, which is located below the sedimentation pipe 4. When the cover plate 405 is opened, the sediment inside will fall into the cleaning pool 11.

[0046] In one embodiment, the sedimentation pipe 4 is in a square spiral distribution, so that the sedimentation pipe 4 can be designed to be longer within a limited space.

[0047] In another embodiment, the sedimentation pipeline 4 is distributed in an S shape, so that the sedimentation pipeline 4 can be designed to be longer within a limited space.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A chemical wastewater treatment system, characterized in that: include: An industrial wastewater conveying system, a flocculant conveying system, a mixing box (5), and a discharge system, wherein the industrial wastewater conveying system and the flocculant conveying system are both connected to the mixing box (5) to convey the industrial wastewater and the flocculant to the mixing box (5); The mixing box (5) is connected to the discharge system via a sedimentation pipeline (4), and the length of the sedimentation pipeline (4) is not less than 3.5 meters; The sedimentation pipeline (4) comprises: a corrosion-resistant pipeline (401); a plurality of protrusions (402) are equidistantly arranged on the bottom side of the corrosion-resistant pipeline (401); a sedimentation area (403) is formed inside the corrosion-resistant pipeline (401) and between two adjacent protrusions (402); a sedimentation channel (404) corresponding to the sedimentation area (403) is fixedly connected to the bottom of the corrosion-resistant pipeline (401); the bottom end of the sedimentation channel (404) is open, and a cover plate (405) is fixedly installed on the bottom end of the sedimentation channel (404).

2. A chemical wastewater treatment system according to claim 1, characterized in that: The two sides of the protrusion (402) are respectively a smooth slope (a) and a steep slope (b), and the flow direction of the liquid inside the sedimentation pipe (4) is from the smooth slope (a) toward the steep slope (b).

3. A chemical wastewater treatment system according to claim 1, characterized in that: The industrial wastewater conveying system comprises: a first pump body (2) and a first filter box (1) which are connected in sequence through pipelines.

4. A chemical wastewater treatment system according to claim 1, characterized in that: The flocculant delivery system comprises: a flocculant storage tank (6) and a second pump body (3) which are sequentially connected via pipelines.

5. A chemical wastewater treatment system according to claim 1, characterized in that: The discharge system comprises: a filter box (7) and a collection tank (10); the liquid outlet of the filter box (7) is connected to a T-shaped liquid outlet pipe (8); the top end of the T-shaped liquid outlet pipe (8) is connected to an air filter-adsorption device (9); and the bottom end of the T-shaped liquid outlet pipe (8) is inserted below the liquid level of the collection tank (10).

6. A chemical wastewater treatment system according to claim 1, characterized in that: Also includes: A cleaning tank (11), wherein the cleaning tank (11) is located below the sedimentation pipeline (4).

7. A chemical wastewater treatment system according to claim 1, characterized in that: The sedimentation pipeline (4) is distributed in a square spiral.

8. A chemical wastewater treatment system according to claim 1, characterized in that: The sedimentation pipeline (4) is S-shaped.

Images