Wastewater aerobic clean cooling system without odor emission

Abstract

The utility model belongs to the technical field of papermaking wastewater treatment, particularly relates to a wastewater aerobic clean cooling system without odor emission, and aims to solve the problem that environmental pollution is caused as odor generated by wastewater in cooling in the prior art diffuses into air, and adopts the following scheme that the wastewater aerobic clean cooling system comprises an adjusting tank, and a sealing cover is arranged at the top of the adjusting tank; a cylinder is embedded in the top of the sealing cover, a round cover is arranged at the top of the cylinder, a handle is arranged at the top of the round cover, a connecting rod is fixedly installed in the center of the bottom of the round cover, a waste gas adsorption mechanism is fixedly installed at the bottom of the connecting rod, and the outer side of the cylinder communicates with a gas pipe; the air pipe is communicated with an air suction pump. According to the utility model, peculiar smell air generated in the whole cooling process is recycled, is adsorbed and filtered by using the activated carbon adsorption particles, and then is discharged cleanly.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking wastewater treatment, in particular to an aerobic odor-free emission clean cooling system for wastewater. Background Art

[0002] The core of the pulp and paper wastewater treatment section is the anaerobic system and the aerobic system. In the process of treating wastewater in the anaerobic section, anaerobic fermentation is divided into three consecutive stages: the first stage is the hydrolysis and fermentation stage, in which complex organic matter is first decomposed into simple organic matter under the action of anaerobic bacterial extracellular enzymes. Then, simple organic matter is converted into fatty acids and alcohols such as acetic acid, propionic acid, and butyric acid through anaerobic fermentation and oxidation under the action of acid-producing bacteria. The second stage is the hydrogen and acetic acid production stage, in which the intermediate products produced in the first stage are converted into acetic acid and hydrogen, and carbon dioxide is generated. The third stage is the methanogenic stage, in which the acetic acid, hydrogen, and carbon dioxide produced in the first and second stages are converted into methane. Anaerobic biological treatment can be carried out at medium temperature (35℃-38℃) or at high temperature (52℃-55℃). Because in the process of anaerobic biological treatment, it is necessary to consider the influence of various factors on methanogens, because methanogens are most active and have the best treatment effect in two temperature ranges (i.e., 35℃-38℃ and 52℃-55℃).

[0003] Since pulp and paper mills are in production all year round, the temperature of wastewater discharged from pulp and paper mills varies greatly with the change of seasons. In summer, due to the high weather temperature, the average temperature of wastewater in the primary sedimentation tank is 45°C, and in winter, due to the low weather temperature, the average temperature of wastewater in the primary sedimentation tank is 20°C. If the wastewater is directly passed through the anaerobic section, the wastewater temperature cannot reach the best conditions for microbial activity, resulting in a decrease in the efficiency of wastewater treatment in the anaerobic section. Therefore, a new process is studied to stabilize the temperature of pulp and paper wastewater, maximize the activity of microorganisms, achieve the best treatment effect of wastewater in the anaerobic and aerobic sections, minimize pollutant emissions, and effectively improve the level of clean production.

[0004] refer to Figure 5 , so that the temperature of pulp and paper wastewater entering the anaerobic system is stabilized at 35℃-38℃. When the wastewater is at high temperature, an efficient cooling system is used to reduce the wastewater temperature. When the wastewater is at low temperature, the heat of the waste gas from the power station is used to heat the wastewater temperature, so that the wastewater temperature remains stable and controllable. At the same time, a certain odor will be generated during the entire wastewater temperature control process. If it is directly discharged, it will have a certain impact on the air, so the odor is cleaned and treated to maintain the sustainable development of the surrounding environment.

[0005] The wastewater from the primary sedimentation tank and the regulating tank, as well as the anaerobic system and aerobic system, are studied. The influence of the temperature of the wastewater in different seasons on the wastewater treatment system is studied. When the wastewater temperature is high, a closed cooling system is introduced to effectively cool the wastewater. The influence of different wastewater temperatures on the wastewater treatment effect is studied. When the wastewater temperature is low, a large amount of high-quality condensed water is lost because part of the wastewater and waste gas discharged from the power station needs to be discharged directly. This part of the high-temperature condensed water is recycled and used to heat the wastewater temperature to meet the highest requirements for the activity of anaerobic microorganisms. A temperature control system is used at the inlet of the anaerobic system to realize automatic control of the wastewater temperature and ensure that the wastewater temperature is stable and controllable.

[0006] The odor generated by the wastewater during cooling using existing technology spreads into the air, causing environmental pollution. Utility Model Content

[0007] The utility model aims to solve the disadvantage that the odor generated by waste water in the existing cooling technology diffuses into the air and causes environmental pollution, and proposes a waste water aerobic odor-free emission clean cooling system.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A wastewater aerobic odor-free emission clean cooling system comprises a regulating tank, a sealing cover is arranged on the top of the regulating tank, connecting pipes are arranged on both sides of the regulating tank, a cooling mechanism is connected to the regulating tank, a cylinder is embedded in the top of the sealing cover, a round cover is arranged on the top of the cylinder, a handle is arranged on the top of the round cover, a connecting rod is fixedly installed at the center position of the bottom of the round cover, an exhaust gas adsorption mechanism is fixedly installed at the bottom of the connecting rod, an air pipe is connected to the outside of the cylinder, and an air suction pump is connected to the air pipe.

[0010] Preferably, the cooling mechanism includes a cooling pipe, which is arranged in a curved shape in the regulating tank, with an inlet pipe and an outlet pipe respectively connected to both ends of the cooling pipe, the outlet pipe is connected to a cooling box, the inlet pipe is connected to a circulating pump, the circulating pump is connected to a pumping pipe, the pumping pipe is connected to the cooling box, a semiconductor refrigerator is embedded in the outer side of the cooling box, the cooling surface of the semiconductor refrigerator is located in the cooling box, and coolant is arranged in the cooling box; when the circulating pump works, the coolant is sent into the inlet pipe through the pumping pipe, and then flows along the cooling pipe and refluxes through the outlet pipe, so as to cool the wastewater inside the regulating tank.

[0011] Preferably, the exhaust gas adsorption mechanism includes a metal round mesh, which is fixedly mounted on the bottom end of the connecting rod, and has two delivery holes on the top of the metal round mesh, in which activated carbon adsorption particles are placed; the exhaust gas is adsorbed and filtered by multiple activated carbon adsorption particles to reduce the pollution of the exhaust gas to the air.

[0012] Preferably, a sealing ring is sleeved on the outer side of the metal round mesh, and the sealing ring is slidably connected to the inner wall of the cylinder; the sealing ring is used to seal between the metal round mesh and the cylinder.

[0013] Preferably, four elastic metal sheets are fixedly installed on the bottom of the round cover, and the four elastic metal sheets are evenly arranged and fixedly installed with trapezoidal blocks. Four slots are opened on the inner wall of the cylinder, and the trapezoidal blocks are snap-fitted into the slots; the elastic metal sheets provide elastic force for the trapezoidal blocks to enter the slots and fix the round cover.

[0014] In the utility model, the beneficial effects of the wastewater aerobic odor-free emission clean cooling system are:

[0015] The circulating pump delivers the coolant into the inlet pipe through the pumping pipe, and then flows along the cooling pipe and flows back through the outlet pipe to cool the wastewater inside the regulating tank. The exhaust gas is sucked into the cylinder through the suction pump, and is adsorbed and filtered by multiple activated carbon adsorption particles to reduce the pollution of the exhaust gas to the air. The activated carbon adsorption particles need to be replaced after a long time of use. The round cover is moved by pulling the handle, and the round cover drives the metal round net to leave the cylinder through the connecting rod. The activated carbon adsorption particles can be replaced through the two delivery holes.

[0016] The utility model recovers the peculiar smell air generated in the whole cooling process, uses activated carbon adsorption particles to perform adsorption and filtration, and then discharges it in a clean manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a wastewater aerobic odor-free emission clean cooling system proposed by the utility model;

[0018] Figure 2 This is a schematic structural diagram of part A of a wastewater aerobic odor-free emission clean cooling system proposed by the utility model;

[0019] Figure 3 This is a three-dimensional structural schematic diagram of the metal round mesh and the sealing ring proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the cooling pipe proposed by the utility model;

[0021] Figure 5 Wastewater treatment flow chart.

[0022] In the figure: 1. regulating tank; 2. cooling pipe; 3. cooling box; 4. semiconductor refrigerator; 5. circulating pump; 6. water suction pipe; 7. inlet pipe; 8. outlet pipe; 9. sealing cover; 10. suction pump; 11. air pipe; 12. cylinder; 13. round cover; 14. handle; 15. connecting rod; 16. positioning rod; 17. positioning groove; 18. elastic metal sheet; 19. trapezoidal block; 20. slot; 21. metal round net; 22. sealing ring; 23. activated carbon adsorption particles; 24. delivery hole. DETAILED DESCRIPTION

[0023] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments.

[0024] Embodiment 1

[0025] Reference Figure 1-Figure 4 A wastewater aerobic odor-free clean cooling system comprises a regulating tank 1, a sealing cover 9 is arranged on the top of the regulating tank 1, connecting pipes are arranged on both sides of the regulating tank 1, a cooling mechanism is connected to the regulating tank 1, a cylinder 12 is embedded in the top of the sealing cover 9, a round cover 13 is arranged on the top of the cylinder 12, a handle 14 is arranged on the top of the round cover 13, a connecting rod 15 is fixedly installed at the center position of the bottom of the round cover 13, an exhaust gas adsorption mechanism is fixedly installed at the bottom of the connecting rod 15, an air pipe 11 is connected to the outside of the cylinder 12, and an air suction pump 10 is connected to the air pipe 11.

[0026] In this embodiment, the cooling mechanism includes a cooling pipe 2, which is arranged in a curved shape in the regulating tank 1. The two ends of the cooling pipe 2 are respectively connected with an inlet pipe 7 and an outlet pipe 8, the outlet pipe 8 is connected with a cooling box 3, the inlet pipe 7 is connected with a circulating pump 5, the circulating pump 5 is connected with a pumping pipe 6, the pumping pipe 6 is connected with the cooling box 3, a semiconductor refrigerator 4 is embedded in the outer side of the cooling box 3, the cooling surface of the semiconductor refrigerator 4 is located in the cooling box 3, and coolant is arranged in the cooling box 3; the circulating pump 5 works to send the coolant into the inlet pipe 7 through the pumping pipe 6, and then it flows along the cooling pipe 2 and refluxes through the outlet pipe 8, so as to cool the wastewater inside the regulating tank 1.

[0027] In this embodiment, the exhaust gas adsorption mechanism includes a metal round mesh 21, which is fixedly installed at the bottom end of the connecting rod 15. Two delivery holes 24 are opened on the top of the metal round mesh 21, and activated carbon adsorption particles 23 are placed in the metal round mesh 21; the exhaust gas is adsorbed and filtered by multiple activated carbon adsorption particles 23 to reduce the pollution of the exhaust gas to the air. A sealing ring 22 is provided on the outer side of the metal round mesh 21, and the sealing ring 22 is slidably connected to the inner wall of the cylinder 12; the sealing ring 22 is used to seal the metal round mesh 21 and the cylinder 12.

[0028] In this embodiment, four elastic metal sheets 18 are fixedly installed at the bottom of the round cover 13. The four elastic metal sheets 18 are evenly arranged and fixedly installed with trapezoidal blocks 19. Four slots 20 are opened on the inner wall of the cylinder 12, and the trapezoidal blocks 19 are snap-fitted with the slots 20. The elastic metal sheets 18 provide elastic force for the trapezoidal blocks 19 to enter the slots 20, thereby fixing the round cover 13.

[0029] Working principle: When in use, the power supply and PLC controller can be turned on to control the electrical appliances. The prior art will not be elaborated here. After the wastewater enters the regulating tank 1, the semiconductor refrigerator 4 cools the coolant inside the cooling box 3, and the circulating pump 5 works to send the coolant into the inlet pipe 7 through the pumping pipe 6, and then flows along the cooling pipe 2 and refluxes through the outlet pipe 8, so as to cool the wastewater inside the regulating tank 1. The exhaust gas is sucked into the cylinder 12 through the suction pump 10, and the exhaust gas is adsorbed and filtered by a plurality of activated carbon adsorption particles 23 to reduce the pollution of the exhaust gas to the air. The activated carbon adsorption particles 23 need to be replaced after a long time of use. The round cover 13 is moved by pulling the handle 14, and the round cover 13 drives the metal round mesh 21 to leave the cylinder 12 through the connecting rod 15, and the activated carbon adsorption particles 23 can be replaced through the two delivery holes 24.

[0030] Embodiment 2

[0031] Working principle: The difference between Example 2 and Example 1 is that four positioning rods 16 are fixedly installed on the top of the cylinder 12, and four positioning grooves 17 are opened at the bottom of the round cover 13. The positioning rods 16 are movably connected with the positioning grooves 17. The arranged positioning rods 16 cooperate with the positioning grooves 17 to position the round cover 13 and ensure the stable installation of the round cover 13. This application includes all the structural shapes, sizes and materials of Example 1, and they can be selected and adjusted to meet the specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0032] The above is only a preferred specific implementation of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of this embodiment within the technical scope disclosed in this embodiment, which should be covered by the protection scope of this embodiment.

Claims

1. A wastewater aerobic odor-free clean cooling system, comprising a regulating tank (1), a sealing cover (9) is provided on the top of the regulating tank (1), characterized in that: Connecting pipes are provided on both sides of the regulating tank (1), the regulating tank (1) is connected to a cooling mechanism, a cylinder (12) is embedded in the top of the sealing cover (9), a round cover (13) is provided on the top of the cylinder (12), a handle (14) is provided on the top of the round cover (13), a connecting rod (15) is fixedly installed at the center position of the bottom of the round cover (13), an exhaust gas adsorption mechanism is fixedly installed at the bottom of the connecting rod (15), an air pipe (11) is connected to the outside of the cylinder (12), and an air suction pump (10) is connected to the air pipe (11).

2. The aerobic odor-free wastewater clean cooling system according to claim 1, characterized in that: The cooling mechanism comprises a cooling pipe (2), the cooling pipe (2) is arranged in a curved shape in the regulating tank (1), the two ends of the cooling pipe (2) are respectively connected to an inlet pipe (7) and an outlet pipe (8), the outlet pipe (8) is connected to a cooling box (3), the inlet pipe (7) is connected to a circulation pump (5), the circulation pump (5) is connected to a water pump (6), and the water pump (6) is connected to the cooling box (3).

3. The aerobic odor-free wastewater clean cooling system according to claim 2, characterized in that: A semiconductor refrigerator (4) is embedded in the outer side of the cooling box (3); the cooling surface of the semiconductor refrigerator (4) is located in the cooling box (3); and a cooling liquid is arranged in the cooling box (3).

4. The aerobic odor-free wastewater clean cooling system according to claim 1, characterized in that: The exhaust gas adsorption mechanism comprises a metal round mesh (21), the metal round mesh (21) is fixedly mounted on the bottom end of the connecting rod (15), two delivery holes (24) are provided on the top of the metal round mesh (21), and activated carbon adsorption particles (23) are placed in the metal round mesh (21).

5. The aerobic odor-free wastewater clean cooling system according to claim 4, characterized in that: The outer side of the metal round net (21) is sleeved with a sealing ring (22), and the sealing ring (22) is slidably connected to the inner wall of the cylinder (12).

6. The aerobic odor-free wastewater clean cooling system according to claim 1, characterized in that: Four elastic metal sheets (18) are fixedly mounted on the bottom of the circular cover (13), the four elastic metal sheets (18) are evenly arranged and fixedly mounted with trapezoidal blocks (19), four clamping grooves (20) are opened on the inner wall of the cylinder (12), and the trapezoidal blocks (19) are clamped with the clamping grooves (20).

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