Production sewage recovery treatment device

Abstract

The utility model discloses a production sewage recovery treatment device which comprises a wastewater treatment pond, a cement partition is arranged in the middle of the wastewater treatment pond and divides the wastewater treatment pond into a first treatment pond and a second treatment pond, and the top of the wastewater treatment pond is separated from the outside through a sealing cover plate. The utility model relates to the technical field of synthesis ammonia production, in particular to a production sewage recovery treatment device, which is characterized in that a wastewater treatment tank is divided into two parts, wastewater is firstly discharged into one tank, a flocculating agent is added into the wastewater, so that impurities in the wastewater are condensed into large particles, and then solid waste separation is performed through a filter press; according to the system, the pressure of a tail end sewage treatment system can be effectively reduced, potential environmental hazards caused by overflow of the wastewater can be avoided, meanwhile, a water source is provided for preparation of the coal water slurry, the use amount of clear water is effectively reduced, and the purpose of saving resources is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of synthetic ammonia production, in particular to a production wastewater recovery and treatment device. Background Art

[0002] In chemical synthetic ammonia enterprises, the sulfur melting system of the gasification desulfurization system performs sulfur melting operations throughout the day during normal production, using 0.5MPa steam to melt sulfur. During the operation, about 15 tons / day of steam condensate is generated, which overflows into the recovery pool through the ditch. Due to water quality problems, the terminal sewage treatment station is unable to meet the standards, and currently has failed to effectively treat wastewater, resulting in excess wastewater at the station. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a production wastewater recovery and treatment device, which solves the problem of excess wastewater from the prior synthetic ammonia production due to substandard treatment.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a production wastewater recovery and treatment device, comprising a wastewater treatment tank, a cement partition is arranged in the middle of the wastewater treatment tank, the cement partition separates the wastewater treatment tank into a No. 1 treatment tank and a No. 2 treatment tank, and the top of the wastewater treatment tank is separated from the outside by a sealing cover plate.

[0007] A flocculant addition port and a motor are provided at the top of the No. 2 treatment tank. A rotatable stirring shaft is installed at the output end of the motor, and the stirring shaft is located inside the No. 2 treatment tank.

[0008] Pump No. 1 and pump No. 2 are respectively arranged on both sides of the top of the wastewater treatment pool. Pump No. 1 is connected to treatment pool No. 2 through pump No. 1 pipe. The water outlet of pump No. 1 is connected to a filter press. A silo is arranged below the outlet of the filter press. The drain outlet of the filter press is connected to treatment pool No. 1 through a drain pipe.

[0009] The No. 2 pump is connected to the No. 1 treatment tank through the No. 2 pumping pipe. The outlet of the No. 2 pump is connected to a three-way pipe. Switch valves are provided on the two branches of the three-way pipe. The two branches are connected to the pulping wastewater tank and the desulfurization sulfur foam tank respectively.

[0010] As a further preference, the filter press is a plate and frame filter press.

[0011] As further preferred, a box body with an open top is arranged on the top of the stirring shaft, a material spreading port is opened on the side wall of the box body, and the box body is located below the flocculant addition port.

[0012] As a further preference, the second pump is a sewage suction pump.

[0013] (III) Beneficial effects

[0014] The utility model provides a production wastewater recycling and treatment device, which has the following beneficial effects:

[0015] The production wastewater recycling and treatment device divides the wastewater treatment pool into two, discharges the wastewater into one of the pools first, adds flocculants to the wastewater to condense the impurities in the wastewater into large particles, separates the solid and waste through a filter press, and finally recycles the wastewater into a pulping wastewater tank and a desulfurization sulfur foam tank. This can effectively reduce the pressure of the terminal sewage treatment system, avoid environmental hazards caused by wastewater overflow, and provide a water source for water-coal slurry preparation, effectively reduce the use of clean water, and achieve the purpose of saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] In the figure: 1. Wastewater treatment tank; 2. Cement partition; 3. Treatment tank No. 1; 4. Treatment tank No. 2; 5. Sealing cover; 6. Flocculant addition port; 7. Motor; 8. Agitator shaft; 9. Box body; 10. Pump No. 1; 11. Filter press; 12. Suction pipe No. 1; 13. Silo; 14. Drain pipe; 15. Pump No. 2; 16. Suction pipe No. 2; 17. Three-way pipe; 18. Switch valve; 19. Pulping wastewater tank; 20. Desulfurization sulfur foam tank. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1 As shown, the utility model provides a technical solution: a production wastewater recovery and treatment device, including a wastewater treatment pool 1, a cement partition 2 is arranged in the middle of the wastewater treatment pool 1, and the cement partition 2 divides the wastewater treatment pool 1 into a No. 1 treatment pool 3 and a No. 2 treatment pool 4, and the top of the wastewater treatment pool 1 is separated from the outside by a sealing cover plate 5.

[0020] A flocculant addition port 6 and a motor 7 are provided at the top of the No. 2 treatment tank 4. A rotatable stirring shaft 8 is installed at the output end of the motor 7. The stirring shaft 8 is located inside the No. 2 treatment tank 4. A box body 9 with an open top is provided on the top of the stirring shaft 8. A spreading port is provided on the side wall of the box body 9. The box body 9 is located below the flocculant addition port 6. The flocculant falls into the box body 9 below through the flocculant addition port 6. The box body 9 rotates under the drive of the stirring shaft 8. The centrifugal force generated by the rotation is used to evenly throw the flocculant through the spreading port. After the flocculant is dissolved in the wastewater, the tiny impurities in the wastewater can be condensed to form large particle agglomerates, which are convenient for subsequent filtration.

[0021] A No. 1 pump 10 and a No. 2 pump 15 are respectively arranged on both sides of the top of the wastewater treatment tank 1. The No. 2 pump 15 is a sewage suction pump. The No. 1 pump 10 is connected to the No. 2 treatment tank 4 through the No. 1 suction pipe 12. The water outlet of the No. 1 pump 10 is connected to the filter press 11. The filter press 11 adopts a plate and frame filter press. A silo 13 is arranged below the discharge port of the filter press 11. The drain outlet of the filter press 11 is connected to the No. 1 treatment tank 3 through the drain pipe 14.

[0022] The No. 2 pump 15 is connected to the No. 1 treatment pool 3 through the No. 2 pumping pipe 16. The outlet of the No. 2 pump 15 is connected to a three-way pipe 17. The two branches of the three-way pipe 17 are each provided with a switch valve 18. The two branches are respectively connected to the pulping wastewater tank 19 and the desulfurization sulfur foam tank 20.

[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field.

[0024] When in use, the desulfurized wastewater flows into the No. 2 treatment tank 4 through the pipe port (not numbered in the figure), flocculant is added to the No. 2 treatment tank 4 through the flocculant addition port 6, and the motor 7 is turned on to drive the stirring shaft 8 to rotate, thereby stirring the wastewater, so that the flocculant is fully integrated with the impurities in the wastewater to achieve the purpose of impurity coagulation.

[0025] Turn on the No. 1 pump 10, pump out the wastewater through the No. 1 pumping pipe 12, and send it into the filter press 11. Under the action of the filter press 11, the impurities are filtered out, and the water is discharged into the No. 1 treatment tank 3 through the drain pipe 14. The impurities are collected through the silo 13 and finally transported to the slag yard for deep treatment.

[0026] Turn on the No. 2 pump 15, pump out the filtered wastewater through the No. 2 pumping pipe 16, and send it to the pulping wastewater tank 19 and the desulfurization sulfur foam tank 20 through the three-way pipe 17 respectively; one way is recycled by the system itself, and the other way is sent to the pulping station as water for slurry production.

[0027] To summarize, the production wastewater recycling and treatment device divides the wastewater treatment pool into two, discharges the wastewater into one of the pools first, adds flocculants to the wastewater to condense the impurities in the wastewater into large particles, separates the solid waste through a filter press, and finally recycles it to the pulping wastewater tank and the desulfurization sulfur foam tank. It can effectively reduce the pressure of the terminal sewage treatment system, avoid environmental hazards caused by wastewater overflow, and at the same time provide a water source for the preparation of water-coal slurry, effectively reduce the use of clean water, and achieve the purpose of saving resources.

[0028] It should be noted that the electrical components appearing in this article are all connected to the external main controller and 220V or 380V mains electricity, and the main controller can be a conventional known device for controlling computers, etc. Its control principle, internal structure and control switch mode are all conventional means of the prior art, which are directly quoted here without further elaboration. In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production wastewater recovery and treatment device, characterized in that: The invention comprises a wastewater treatment pool (1), wherein a cement partition (2) is arranged in the middle of the wastewater treatment pool (1), and the cement partition (2) divides the wastewater treatment pool (1) into a first treatment pool (3) and a second treatment pool (4), and the top of the wastewater treatment pool (1) is separated from the outside by a sealing cover plate (5); The top of the No. 2 treatment tank (4) is provided with a flocculant addition port (6) and a motor (7), and a rotatable stirring shaft (8) is installed at the output end of the motor (7), and the stirring shaft (8) is located inside the No. 2 treatment tank (4); A No. 1 pump (10) and a No. 2 pump (15) are respectively arranged on both sides of the top of the wastewater treatment tank (1); the No. 1 pump (10) is connected to the No. 2 treatment tank (4) through a No. 1 water pumping pipe (12); the water outlet of the No. 1 pump (10) is connected to a filter press (11); a silo (13) is arranged below the discharge port of the filter press (11); and the drainage port of the filter press (11) is connected to the No. 1 treatment tank (3) through a drainage pipe (14); The second pump (15) is connected to the first treatment pool (3) through the second pumping pipe (16). The water outlet of the second pump (15) is connected to a three-way pipe (17). The two branches of the three-way pipe (17) are each provided with a switch valve (18). The two branches are respectively connected to the pulping wastewater tank (19) and the desulfurization sulfur foam tank (20).

2. The production wastewater recovery and treatment device according to claim 1 is characterized in that: The filter press (11) is a plate and frame filter press.

3. The production wastewater recovery and treatment device according to claim 1 is characterized in that: A box body (9) with an open top is arranged on the top of the stirring shaft (8), a material spreading port is opened on the side wall of the box body (9), and the box body (9) is located below the flocculant addition port (6).

4. The production wastewater recovery and treatment device according to claim 1 is characterized in that: The second pump (15) is a sewage suction pump.

Images