Concentration wastewater recycling device

Abstract

The utility model discloses a concentration wastewater recycling device which comprises a discharge water tank, the discharge water tank is provided with a water outlet and a water inlet, the water outlet of the discharge water tank is connected with a circulating water pump unit through a pipeline, and the other end of the circulating water pump unit is connected with a bypass valve through a pipeline. The other end of the bypass valve is connected with a heat exchange cooling unit through a pipeline, the two ends of the bypass valve are further connected with a precision filtering unit in parallel, and the other end of the heat exchange cooling unit is connected with a water inlet of the drainage pool through a pipeline. According to the concentration wastewater recycling device disclosed by the utility model, the precision filter is additionally arranged between the discharge water tank and the heat exchanger, so that fresh water taking of dissolved chemicals of an original water treatment system and mechanical seal water taking of concentration equipment are replaced, the water quality problem of reuse water is effectively solved, and equipment abrasion and blockage caused by direct use of the reuse water are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of concentration wastewater recycling equipment, and specifically relates to a concentration wastewater recycling device. BACKGROUND

[0002] Water treatment technology is a method for purifying wastewater by physical, chemical, physical-chemical or biological methods. Physical method is to separate suspended solids in water by physical action, and only physical change occurs in the treatment process. Common physical treatment methods include: grating, screening, filtration, sedimentation and floating, etc. Chemical method is to treat dissolved substances or colloidal substances in water by using chemical reaction. Chemical change occurs in the treatment process. Common chemical treatment methods include: neutralization method, chemical precipitation method, oxidation-reduction method, etc. Physical-chemical method is a method for purifying wastewater by using the comprehensive action of physics and chemistry. Common physical-chemical treatment methods include: adsorption method, ion exchange method and membrane technology (electrodialysis, reverse osmosis, ultrafiltration, etc.). Biological method is to remove colloidal and dissolved organic substances in water by using microorganisms. Common biological treatment methods include: aerobic activated sludge method, biological membrane method, anaerobic digestion tank method, etc. The selection of process depends on the water quality of wastewater, the water quality requirements of discharge or recycling, treatment cost, etc.

[0003] The water treatment process usually needs the corresponding structures and equipment of the process, and the biological treatment method also needs to add fillers and cultivate and release the microbial community suitable for the nature of the incoming water. Therefore, the requirements for related parameters are high during the system operation, and the fillers need to be cleaned regularly and the residual sludge needs to be disposed in accordance with the regulations during long-term operation, so as to ensure the efficient and normal operation of the system and make the water quality indicators reach the standard limit. Therefore, the traditional water treatment system needs a long engineering construction period, occupies a large area, and has a high operation and maintenance cost.

[0004] The wastewater generated by the pipeline coal concentration process is mainly the centrifugal liquid after coal slurry dewatering, which is discharged after being treated by a coagulation sedimentation and sand filtration system. The machine seal water of each equipment in the concentration workshop and the dissolving agent water of the water treatment system need to use fresh water, which increases the fresh water intake and the operation cost. In order to solve this problem, a concentration wastewater recycling system is proposed. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a concentration wastewater recycling device, which solves the problem that water cannot be recycled in the prior art.

[0006] The utility model adopts the technical scheme: the enrichment wastewater recycling device, including the discharge pond, the discharge pond is equipped with the water outlet and the water inlet, the water outlet of discharge pond is connected with the circulating water pump unit through the pipeline, the other end of circulating water pump unit is connected with the bypass valve through the pipeline, the other end of bypass valve is connected with the heat exchange cooling unit through the pipeline, the both ends of bypass valve still have the precision filtration unit in parallel, the other end of heat exchange cooling unit is connected with the water inlet of discharge pond through the pipeline.

[0007] The utility model has the characteristics that:

[0008] The circulating water pump unit includes a circulating water pump, and the two ends of the circulating water pump are respectively connected with a first valve and a second valve.

[0009] The precision filtration unit includes a precision filter, and the two ends of the precision filter are respectively connected with a third valve and a fourth valve.

[0010] The water inlet of the bypass valve is also connected with the second valve through a pipeline.

[0011] The heat exchange cooling unit includes a heat exchanger, and the water inlet of the heat exchanger is connected with the water outlet of the bypass valve through a pipeline.

[0012] The water inlet of the heat exchanger is also connected with a water supplement pipeline, and the other end of the water supplement pipeline is connected with a water supplement valve.

[0013] The utility model has the advantages that: the enrichment wastewater recycling device of the utility model, through installing a precision filter between the discharge pond and the heat exchanger, replaces the fresh water of the original water treatment system dissolving reagent and the machine seal water of the enrichment equipment, effectively solves the water quality problem of the recycled water. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model is the structure schematic diagram of the enrichment wastewater recycling device.

[0015] In the drawing: 1. discharge pond; 2. circulating water pump; 201. first valve; 202. second valve; 3. heat exchanger; 4. cooling tower; 5. precision filter; 501. third valve; 502. fourth valve; 6. water supplement valve; 7. bypass valve. DETAILED DESCRIPTION

[0016] The utility model is described in detail below in combination with the drawings and specific embodiments.

[0017] As Figure 1 The utility model provides a concentration wastewater recycling device, including discharge pond 1, discharge pond 1 is equipped with water outlet and water inlet, the water outlet of discharge pond 1 is connected with circulating water pump unit through pipeline, the other end of circulating water pump unit is connected with bypass valve 7 through pipeline, the other end of bypass valve 7 is connected with heat exchange cooling unit through pipeline, the both ends of bypass valve 7 still have precision filtration unit in parallel, the other end of heat exchange cooling unit is connected with the water inlet of discharge pond 1 through pipeline.

[0018] Circulating water pump unit includes circulating water pump 2, and its purpose is to provide circulating power for water, and the both ends of circulating water pump 2 are connected with first valve 201 and second valve 202 respectively, and first valve 201 is arranged between the water outlet of discharge pond 1 and circulating water pump 2.

[0019] Precision filtration unit includes precision filter 5, and the both ends of precision filter 5 are connected with third valve 501 and fourth valve 502 respectively, and the other end of third valve 501 is connected with the water inlet of bypass valve 7 through pipeline, and the other end of fourth valve 502 is connected with the water outlet of bypass valve 7 through pipeline.

[0020] The water inlet of bypass valve 7 is also connected with second valve 202 through pipeline, and its purpose is that when precision filter 5 needs to be replaced or maintained, closes third valve 501 and fourth valve 502, and then opens bypass valve 7, and circulating water can not pass through precision filter 5, directly circulates, which is convenient for replacement or maintenance.

[0021] Heat exchange cooling unit includes heat exchanger 3, and the water inlet of heat exchanger 3 is connected with the water outlet of bypass valve 7 through pipeline, and the water outlet of heat exchanger 3 is connected with cooling tower 4 through pipeline, and the water outlet of cooling tower 4 is connected with discharge pond 1 through pipeline.

[0022] The water inlet of heat exchanger 3 is also connected with water supplement pipeline, and the other end of water supplement pipeline is connected with water supplement valve 6.

[0023] The wastewater recycling device provided by this utility model works as follows: When the water-using equipment has no need for replenishment, the water in the external discharge pool 1 is sent to the heat exchanger 3 by the circulating water pump 2 to exchange heat with other media. After the water temperature rises, it flows back to the external discharge pool 1 through the cooling tower 4 to meet production needs. When the water volume is insufficient, a portion is added through the water replenishment valve 6. When the production area has a water replenishment need, the water in the external discharge pool 1 is pumped through the circulating water pump 2, the bypass valve 7 is closed, and then the water replenishment valve 6 is opened to meet the water replenishment needs, thus achieving the purpose of reusing the concentrated wastewater. By installing a precision filter 5 between the discharge pool 1 and the heat exchanger 3, the original water treatment system's fresh water intake for dissolving chemicals and the mechanical seal water intake of the concentration equipment are replaced, effectively solving the water quality problem of the recycled water. This not only reduces equipment wear and blockage caused by direct use of recycled water, but also reduces the cost of fresh water intake, and is small in size, easy to operate and maintain.

[0024] Example 1

[0025] like Figure 1 As shown, the wastewater recycling device proposed in this embodiment includes a discharge pool 1. The discharge pool 1 is provided with an outlet and an inlet. The outlet of the discharge pool 1 is connected to a circulating water pump unit through a pipe. The other end of the circulating water pump unit is connected to a bypass valve 7 through a pipe. The other end of the bypass valve 7 is connected to a heat exchange and cooling unit through a pipe. A precision filter unit is also connected in parallel at both ends of the bypass valve 7. The other end of the heat exchange and cooling unit is connected to the inlet of the discharge pool 1 through a pipe.

[0026] Example 2

[0027] like Figure 1 As shown, the wastewater recycling device proposed in this embodiment includes a discharge tank 1, which has an outlet and an inlet. The outlet of the discharge tank 1 is connected to a circulating water pump unit via a pipe. The other end of the circulating water pump unit is connected to a bypass valve 7 via a pipe. The other end of the bypass valve 7 is connected to a heat exchange and cooling unit via a pipe. A precision filter unit is also connected in parallel to both ends of the bypass valve 7. The other end of the heat exchange and cooling unit is connected to the inlet of the discharge tank 1 via a pipe. The circulating water pump unit includes a circulating water pump 2. The two ends of the circulating water pump 2 are respectively connected to a first valve 201 and a second valve 202. The first valve 201 is located between the outlet of the discharge tank 1 and the circulating water pump 2.

[0028] Example 3

[0029] like Figure 1As shown, the wastewater recycling device proposed in this embodiment includes a discharge tank 1, which has an outlet and an inlet. The outlet of the discharge tank 1 is connected to a circulating water pump unit via a pipe. The other end of the circulating water pump unit is connected to a bypass valve 7 via a pipe. The other end of the bypass valve 7 is connected to a heat exchange and cooling unit via a pipe. A precision filter unit is connected in parallel to both ends of the bypass valve 7. The other end of the heat exchange and cooling unit is connected to the inlet of the discharge tank 1 via a pipe. The circulating water pump unit includes a circulating water pump 2, with a first valve 201 and a second valve 202 connected to its two ends respectively. The first valve 201 is located between the outlet of the discharge tank 1 and the circulating water pump 2. The precision filter unit includes a precision filter 5, with a third valve 501 and a fourth valve 502 connected to its two ends respectively. The other end of the third valve 501 is connected to the inlet of the bypass valve 7 via a pipe, and the other end of the fourth valve 502 is connected to the outlet of the bypass valve 7 via a pipe.

[0030] Example 4

[0031] like Figure 1 As shown, the wastewater recycling device proposed in this embodiment includes a discharge tank 1, which has an outlet and an inlet. The outlet of the discharge tank 1 is connected to a circulating water pump unit via a pipe. The other end of the circulating water pump unit is connected to a bypass valve 7 via a pipe. The other end of the bypass valve 7 is connected to a heat exchange and cooling unit via a pipe. A precision filter unit is connected in parallel to both ends of the bypass valve 7. The other end of the heat exchange and cooling unit is connected to the inlet of the discharge tank 1 via a pipe. The circulating water pump unit includes a circulating water pump 2, with a first valve 201 and a second valve 202 connected to its two ends respectively. The first valve 201 is located between the outlet of the discharge tank 1 and the circulating water pump 2. The precision filter unit includes a precision filter 5, with a third valve 501 and a fourth valve 502 connected to its two ends respectively. The other end of the third valve 501 is connected to the inlet of the bypass valve 7 via a pipe, and the other end of the fourth valve 502 is connected to the outlet of the bypass valve 7 via a pipe. The inlet of bypass valve 7 is also connected to the second valve 202 via a pipe.

[0032] Example 5

[0033] like Figure 1As shown, the wastewater recycling device proposed in this embodiment includes a discharge tank 1, which has an outlet and an inlet. The outlet of the discharge tank 1 is connected to a circulating water pump unit via a pipe. The other end of the circulating water pump unit is connected to a bypass valve 7 via a pipe. The other end of the bypass valve 7 is connected to a heat exchange and cooling unit via a pipe. A precision filter unit is connected in parallel to both ends of the bypass valve 7. The other end of the heat exchange and cooling unit is connected to the inlet of the discharge tank 1 via a pipe. The circulating water pump unit includes a circulating water pump 2, with a first valve 201 and a second valve 202 connected to its two ends respectively. The first valve 201 is located between the outlet of the discharge tank 1 and the circulating water pump 2. The precision filter unit includes a precision filter 5, with a third valve 501 and a fourth valve 502 connected to its two ends respectively. The other end of the third valve 501 is connected to the inlet of the bypass valve 7 via a pipe, and the other end of the fourth valve 502 is connected to the outlet of the bypass valve 7 via a pipe. The inlet of the bypass valve 7 is also connected to the second valve 202 via a pipe. The heat exchange and cooling unit includes a heat exchanger 3. The inlet of the heat exchanger 3 is connected to the outlet of the bypass valve 7 via a pipe. The outlet of the heat exchanger 3 is connected to a cooling tower 4 via a pipe. The outlet of the cooling tower 4 is connected to the discharge pool 1 via a pipe.

[0034] Example 6

[0035] like Figure 1 As shown, the wastewater recycling device proposed in this embodiment includes a discharge tank 1, which has an outlet and an inlet. The outlet of the discharge tank 1 is connected to a circulating water pump unit via a pipe. The other end of the circulating water pump unit is connected to a bypass valve 7 via a pipe. The other end of the bypass valve 7 is connected to a heat exchange and cooling unit via a pipe. A precision filter unit is connected in parallel to both ends of the bypass valve 7. The other end of the heat exchange and cooling unit is connected to the inlet of the discharge tank 1 via a pipe. The circulating water pump unit includes a circulating water pump 2, with a first valve 201 and a second valve 202 connected to its two ends respectively. The first valve 201 is located between the outlet of the discharge tank 1 and the circulating water pump 2. The precision filter unit includes a precision filter 5, with a third valve 501 and a fourth valve 502 connected to its two ends respectively. The other end of the third valve 501 is connected to the inlet of the bypass valve 7 via a pipe, and the other end of the fourth valve 502 is connected to the outlet of the bypass valve 7 via a pipe. The inlet of bypass valve 7 is also connected to the second valve 202 via a pipe. The heat exchange and cooling unit includes a heat exchanger 3, the inlet of which is connected to the outlet of bypass valve 7 via a pipe, and the outlet of heat exchanger 3 is connected to a cooling tower 4 via a pipe. The outlet of cooling tower 4 is connected to a discharge water tank 1 via a pipe. The inlet of heat exchanger 3 is also connected to a water supply line, and the other end of the water supply line is connected to a water supply valve 6.

Claims

1. A device for recovering and reusing concentrated wastewater, characterized by comprising: The application relates to a circulating water cooling system, which comprises a discharge water tank (1) provided with a water outlet and a water inlet, wherein the water outlet of the discharge water tank (1) is connected with a circulating water pump unit through a pipeline, the other end of the circulating water pump unit is connected with a bypass valve (7) through a pipeline, the other end of the bypass valve (7) is connected with a heat exchange cooling unit through a pipeline, and the two ends of the bypass valve (7) are also connected with a precision filter unit in parallel, and the other end of the heat exchange cooling unit is connected with the water inlet of the discharge water tank (1) through a pipeline.

2. The concentrated wastewater recycling device according to claim 1, characterized by The circulating water pump unit comprises a circulating water pump (2), and the two ends of the circulating water pump (2) are respectively connected with a first valve (201) and a second valve (202), and the first valve (201) is arranged between the water outlet of the discharge water tank (1) and the circulating water pump (2).

3. The concentrated wastewater recycling device according to claim 2, wherein The precision filter unit comprises a precision filter (5), and the two ends of the precision filter (5) are respectively connected with a third valve (501) and a fourth valve (502), the other end of the third valve (501) is connected with the water inlet of the bypass valve (7) through a pipeline, and the other end of the fourth valve (502) is connected with the water outlet of the bypass valve (7) through a pipeline.

4. The concentrated wastewater recycling device according to claim 3, wherein The water inlet of the bypass valve (7) is also connected with the second valve (202) through a pipeline.

5. The concentrated wastewater recycling device according to claim 4, wherein The heat exchange cooling unit comprises a heat exchanger (3), the water inlet of the heat exchanger (3) is connected with the water outlet of the bypass valve (7) through a pipeline, the water outlet of the heat exchanger (3) is connected with a cooling tower (4) through a pipeline, and the water outlet of the cooling tower (4) is connected with the discharge water tank (1) through a pipeline.

6. The concentrated wastewater recycling device according to claim 5, wherein The water inlet of the heat exchanger (3) is also connected with a water supplement pipeline, and the other end of the water supplement pipeline is connected with a water supplement valve (6).

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