Wastewater treatment system for sludge drying

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses a sludge drying wastewater treatment system which comprises an evaporation box and a control box, the control box is arranged at the lower part of the center of the front end face of the evaporation box, a hot water tank is arranged at the upper part of the center of one side wall of the evaporation box, and a second electromagnetic valve is arranged on one side wall of the evaporation box at the lower end of the hot water tank. A funnel is arranged on the lower portion in the evaporation box, a plurality of heating plates are arranged on the four inner side walls of the funnel in an up-down mode, a fifth electromagnetic valve is arranged at the lower end of the funnel, a gas collecting opening is formed in the upper portion in the evaporation box, and a ventilation opening is formed in the center of the upper end face of the evaporation box. And a third electromagnetic valve is arranged at the upper part of the center of one side wall of the evaporation box. According to the utility model, the plurality of heating plates are started to heat and evaporate waste water in the evaporation box, the heat exchange structure is started to exchange heat for water vapor, and after the water vapor is cooled and liquefied, organic matters in the waste water can be removed, and the filtering structure is prevented from being blocked.

Description

Technical Field

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

[0002] A large amount of highly polluted wastewater will be generated during the sludge drying process. Due to its large amount, it contains harmful substances such as heavy metals and pathogenic microorganisms. If it is not handled properly, it will cause serious secondary pollution to the environment. Therefore, the wastewater after sludge drying needs to be treated before being discharged.

[0003] In existing sludge drying wastewater treatment systems, osmotic membranes are usually used to filter wastewater before discharge or recycling. However, excessive organic matter in the wastewater can easily lead to clogging of the osmotic membrane, increasing costs, and the replacement of the osmotic membrane is cumbersome. Therefore, those skilled in the art have provided a sludge drying wastewater treatment system to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to solve the shortcomings existing in the prior art, and proposes a sludge drying wastewater treatment system. When in use, a small amount of water is transported to the inside of the storage box through the fourth solenoid valve, and then the wastewater is transported to the inside of the evaporation box through the second solenoid valve, a plurality of heating plates are started, and the heating wires inside the plurality of heating plates are energized for heating, so that the wastewater is boiled and evaporated, and the water vapor moves upward along the gas collecting port, and the delivery pump is started, and the delivery pump delivers cold water to the inside of the heat exchange tube to exchange heat with the water vapor, and the water vapor is liquefied when cooled, and is guided to the outer side of the upper end of the gas collecting port through a plurality of guide rods, and then the third solenoid valve is opened, and the liquefied water enters the storage box for filtration, and the evaporated wastewater can remove organic matter in the wastewater and reduce the blockage of the osmotic membrane.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sludge drying wastewater treatment system, comprising an evaporation box and a control box, the control box is arranged at the lower center of the front end surface of the evaporation box, a hot water tank is arranged at the upper center of one side wall of the evaporation box, a second solenoid valve is arranged on one side wall of the evaporation box at the lower end of the hot water tank, a funnel is arranged at the lower part of the interior of the evaporation box, a plurality of heating plates are arranged up and down on four inner side walls of the funnel, a fifth solenoid valve is arranged at the lower end of the funnel, an air collecting port is arranged at the upper part of the interior of the evaporation box, an air vent is arranged at the center of the upper end surface of the evaporation box, a third solenoid valve is arranged at the upper center of one side wall of the evaporation box, a storage box is arranged at the other end, an air pump and a heat exchange structure are symmetrically arranged at both sides of the center of the upper end surface of the storage box, a partition is arranged at the center of the interior of the storage box, a through hole is arranged at the lower center of one side wall of the partition, a filtering structure is arranged inside the through hole, and a fourth solenoid valve is arranged at the lower center of the other side wall of the storage box;

[0006] Through the above technical solution, when in use, the wastewater inside the evaporator is heated and evaporated by starting multiple heating plates, and the heat exchange structure is started to exchange heat with the water vapor. After the water vapor is cooled and liquefied, it can remove organic matter in the wastewater to prevent the filter structure from being blocked. After filtering through the filter structure, it is convenient to replace the filter structure, thereby improving the replacement efficiency.

[0007] Further, the filtering structure includes a filter element, two first rubber pads, two pressure plates, a plurality of double-headed cylinders and two second rubber pads, the plurality of double-headed cylinders are respectively arranged on the upper and lower end surfaces and the front and rear end surfaces of the filter element, the two pressure plates are respectively arranged on the two output ends of the plurality of double-headed cylinders on the two end surfaces of the filter element, the two first rubber pads are respectively arranged on one side wall of the two pressure plates, and the ends are respectively arranged on the side walls of the plurality of double-headed cylinders, and the two second rubber pads are respectively arranged on the inner side walls of the through holes on one side of the two first rubber pads;

[0008] Through the above technical solution, by controlling the contraction of the double-headed cylinder, the filter element can be easily pulled out and replaced. After replacement, the double-headed cylinder is controlled to extend, and the two pressure plates are pushed to both sides, so that the first rubber pad is attached to the second rubber pad for sealing, which makes it easy to replace the filter element.

[0009] Furthermore, the filter element comprises a first filter plate and a second filter plate, the first filter plate is made of bamboo charcoal, and the second filter plate is made of a permeable membrane;

[0010] Through the above technical solution, the wastewater is filtered through the osmotic membrane, and then the remaining impurities and odors in the water are removed through the bamboo charcoal.

[0011] Furthermore, the heat exchange structure includes a delivery pump, a heat exchange tube and a plurality of guide rods, the delivery pump input end penetrates the upper end surface of the storage box to the lower part of the storage box, the delivery pump output end penetrates a side wall of the evaporation box to the upper part of the evaporation box, the heat exchange tube is arranged on the output end of the delivery pump inside the evaporation box, a plurality of guide rods are arranged on the lower end surface of the heat exchange tube, the heat exchange tube output end sequentially penetrates the inner side wall of the evaporation box and a side wall of the hot water tank to the inner side wall of the hot water tank;

[0012] Through the above technical solution, cold water is transported into the heat exchange tube through a delivery pump, so that the water vapor can be cooled and liquefied, and the heat is recovered and transported to the hot water tank for storage, and then the condensed water is guided through multiple guide rods.

[0013] Furthermore, the plurality of guide rods near the center are all inclinedly arranged;

[0014] Through the above technical solution, the condensed water can be conveniently diverted to one side and will not fall on the lower end of the evaporator.

[0015] Furthermore, a first solenoid valve is provided at the lower center of one side wall of the hot water tank, and a pressure relief pipe is provided at the center of one side of the upper end surface of the hot water tank;

[0016] Through the above technical solution, the hot water is discharged by starting the first solenoid valve, and the internal high pressure is released through the pressure relief pipe, so that air can enter and discharge the hot water conveniently when the hot water is discharged.

[0017] Furthermore, a pressure gauge is provided at a lower part of one side of the front end surface of the storage box;

[0018] Through the above technical solution, it is convenient to detect the pressure condition inside the storage box on one side of the partition.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, when the wastewater treatment system for sludge drying is used, a small amount of water is transported to the inside of the storage box through the fourth solenoid valve, and then the wastewater is transported to the inside of the evaporation box through the second solenoid valve, and multiple heating plates are started, and the heating wires inside the multiple heating plates are energized for heating, so that the wastewater is boiled and evaporated, and the water vapor moves upward along the gas collecting port, and the delivery pump is started, and the delivery pump transports cold water to the inside of the heat exchange tube to exchange heat with the water vapor. The water vapor is cooled and liquefied, and is guided to the outside of the upper end of the gas collecting port through multiple guide rods, and then the third solenoid valve is opened, and the liquefied water enters the storage box for filtration, and the evaporated wastewater can remove organic matter in the wastewater and reduce the blockage of the osmotic membrane.

[0021] 2. In the utility model, after the water vapor of the wastewater exchanges heat with the cold water inside the heat exchange tube, it is transported to the inside of the hot water tank through the output end of the heat exchange tube. The air pressure inside the hot water tank increases and the pressure is released through the pressure relief pipe. The hot water is stored in the hot water tank. While extracting the condensed water, the heat energy is recovered to improve the utilization rate.

[0022] 3. In the utility model, by closing the third solenoid valve and starting the air pump, gas is transported to one side of the partition, the air pressure on one side of the partition increases, and the wastewater condensate is squeezed toward the permeable membrane and the bamboo charcoal to improve the efficiency of permeation. When replacing the permeable membrane, the multiple double-headed cylinders are controlled to contract and the filter element is pulled out. After replacing the permeable membrane, the filter element is placed in the through hole, and the multiple double-headed cylinders are controlled to extend to push the two pressure plates to move to both sides, so that the first rubber pad and the second rubber pad fit each other, thereby improving the sealing and facilitating the replacement of the permeable membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a wastewater treatment system for sludge drying proposed by the utility model;

[0024] Figure 2 This is a front cross-sectional view of a wastewater treatment system for sludge drying proposed by the utility model;

[0025] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0026] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0027] Figure 5 for Figure 2 Enlarged schematic diagram of point C in the middle.

[0028] Legend:

[0029] 1. Evaporation box; 2. Control box; 3. Pressure gauge; 4. Filter structure; 401. Filter element; 40101. First filter plate; 40102. Second filter plate; 402. First rubber pad; 403. Press plate; 404. Double-head cylinder; 405. Second rubber pad; 406. Through hole; 5. Storage box; 6. Heat exchange structure; 601. Delivery pump; 602. Heat exchange tube; 603. Guide rod; 7. Air pump; 8. Air vent; 9. Hot water tank; 10. Pressure relief pipe; 11. First solenoid valve; 12. Second solenoid valve; 13. Heating plate; 14. Third solenoid valve; 15. Partition; 16. Fourth solenoid valve; 17. Fifth solenoid valve; 18. Funnel; 19. Gas collecting port. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1-5The utility model provides an embodiment: a sludge drying wastewater treatment system, including an evaporation box 1 and a control box 2, the control box 2 is arranged at the lower center of the front end surface of the evaporation box 1, a hot water tank 9 is arranged at the upper center of one side wall of the evaporation box 1, a second solenoid valve 12 is arranged on one side wall of the evaporation box 1 at the lower end of the hot water tank 9, a funnel 18 is arranged at the lower part of the evaporation box 1, and a plurality of heating plates 13 are arranged up and down on the four inner side walls of the funnel 18. When in use, the wastewater in the evaporation box 1 is heated and evaporated by starting the plurality of heating plates 13, a fifth solenoid valve 17 is arranged at the lower end of the funnel 18, an air collecting port 19 is arranged at the upper part of the evaporation box 1, and a gas collecting port 19 is arranged at the upper end surface of the evaporation box 1. A vent 8 is provided at the center, a third solenoid valve 14 is provided at the upper center of one side wall of the evaporator box 1, a storage box 5 is provided at the other end of the third solenoid valve 14, an air pump 7 and a heat exchange structure 6 are symmetrically provided at both sides of the center of the upper end surface of the storage box 5, the heat exchange structure 6 is started to exchange heat with water vapor, and after the water vapor is cooled and liquefied, it can remove organic matter in the wastewater, a partition 15 is provided at the center of the storage box 5, a through hole 406 is provided at the lower center of one side wall of the partition 15, a filter structure 4 is provided inside the through hole 406, and after filtering by the filter structure 4, it is convenient to replace the filter structure 4, thereby improving the replacement efficiency, and a fourth solenoid valve 16 is provided at the lower center of the other side wall of the storage box 5.

[0032] The filter structure 4 includes a filter element 401, two first rubber pads 402, two pressure plates 403, a plurality of double-headed cylinders 404 and two second rubber pads 405. The plurality of double-headed cylinders 404 are respectively arranged on the upper and lower end surfaces and the front and rear end surfaces of the filter element 401. The two pressure plates 403 are respectively arranged on the two output ends of the plurality of double-headed cylinders 404 on the two end surfaces of the filter element 401. The two first rubber pads 402 are respectively arranged on one side wall of the two pressure plates 403, and the ends are respectively arranged on the side walls of the plurality of double-headed cylinders 404. The two second rubber pads 405 are respectively arranged on one side of the two first rubber pads 402. On the inner wall of the through hole 406, by controlling the contraction of the double-headed cylinder 404, the filter element 401 can be easily pulled out and replaced. After replacement, the double-headed cylinder 404 is controlled to extend to push the two pressure plates 403 to both sides, and the first rubber pad 402 is attached to the second rubber pad 405 for sealing, so as to facilitate the replacement of the filter element 401. The filter element 401 includes a first filter plate 40101 and a second filter plate 40102. The material of the first filter plate 40101 is bamboo charcoal, and the material of the second filter plate 40102 is a permeable membrane. The wastewater is filtered through the permeable membrane, and the remaining impurities and odors in the water are removed by the bamboo charcoal.

[0033] The heat exchange structure 6 includes a delivery pump 601, a heat exchange tube 602 and a plurality of guide rods 603. The input end of the delivery pump 601 passes through the upper end surface of the storage box 5 to the lower part of the storage box 5. The output end of the delivery pump 601 passes through a side wall of the evaporator box 1 to the upper part of the evaporator box 1. The heat exchange tube 602 is arranged on the output end of the delivery pump 601 inside the evaporator box 1. The plurality of guide rods 603 are arranged on the lower end surface of the heat exchange tube 602. The output end of the heat exchange tube 602 passes through the inner wall of the evaporator box 1 and the side wall of the hot water tank 9 in sequence to the inner wall of the hot water tank 9. Cold water is delivered into the heat exchange tube 602 by the delivery pump 601, so that the water vapor can be liquefied by cooling, and the heat is recovered and delivered to the hot water tank 9 for storage. The condensed water is then guided by the plurality of guide rods 603. The plurality of guide rods 603 near the center are all inclined to facilitate the guidance of the condensed water to one side so that it will not fall on the lower end of the evaporator box 1.

[0034] A first solenoid valve 11 is provided at the lower center of one side wall of the hot water tank 9, and a pressure relief pipe 10 is provided at one side of the center of the upper end surface of the hot water tank 9. The hot water is discharged by starting the first solenoid valve 11, and the internal high pressure is relieved through the pressure relief pipe 10, so that air can enter and hot water can be discharged conveniently when the hot water is discharged. A pressure gauge 3 is provided at the lower part of one side of the front end surface of the storage tank 5 to facilitate the detection of the pressure conditions inside the storage tank 5 on the side of the partition 15.

[0035] Working principle: When in use, a small amount of water is transported to the storage box 5 through the fourth solenoid valve 16, and then waste water is transported to the evaporation box 1 through the second solenoid valve 12, and multiple heating plates 13 are started. The heating wires inside the multiple heating plates 13 are energized and heated to boil and evaporate the waste water. The water vapor moves upward along the gas collecting port 19, and the delivery pump 601 is started. The delivery pump 601 transports cold water to the inside of the heat exchange tube 602 to exchange heat with the water vapor. The water vapor is liquefied when cooled and is guided to the outer side of the upper end of the gas collecting port 19 through multiple guide rods 603. Then the third solenoid valve 14 is opened, and the liquefied water enters the storage box 5 for filtration. The evaporated waste water can remove organic matter in the waste water and reduce the blockage of the osmotic membrane.

[0036] By closing the third solenoid valve 14 and starting the air pump 7, gas is transported to one side of the partition 15. The air pressure on one side of the partition 15 increases, and the wastewater condensate is squeezed toward the permeable membrane and the bamboo charcoal to improve the efficiency of permeation. When replacing the permeable membrane, the multiple double-headed cylinders 404 are controlled to contract and the filter element 401 is pulled out. After the permeable membrane is replaced, the filter element 401 is placed inside the through hole 406, and the multiple double-headed cylinders 404 are controlled to extend to push the two pressing plates 403 to move to both sides, so that the first rubber pad 402 and the second rubber pad 405 fit each other, improve the sealing, and facilitate the replacement of the permeable membrane. After the water vapor of the wastewater exchanges heat with the cold water inside the heat exchange tube 602, it is transported to the inside of the hot water tank 9 through the output end of the heat exchange tube 602. The air pressure inside the hot water tank 9 increases, and the pressure is relieved through the pressure relief pipe. The hot water is stored in the hot water tank 9. While extracting the condensed water, the heat energy is recovered to improve the utilization rate.

[0037] 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 sludge drying wastewater treatment system, comprising an evaporation box (1) and a control box (2), wherein the control box (2) is arranged at the lower center of the front end surface of the evaporation box (1), characterized in that: A hot water tank (9) is provided at the upper center of one side wall of the evaporation box (1); a second solenoid valve (12) is provided on one side wall of the evaporation box (1) at the lower end of the hot water tank (9); a funnel (18) is provided at the lower part of the interior of the evaporation box (1); a plurality of heating plates (13) are arranged vertically on four inner side walls of the funnel (18); a fifth solenoid valve (17) is provided at the lower end of the funnel (18); an air collecting port (19) is provided at the upper part of the interior of the evaporation box (1); a vent (8) is provided at the center of the upper end surface of the evaporation box (1); A third solenoid valve (14) is provided at the upper center of one side wall of the evaporator box (1); a storage box (5) is provided at the other end of the third solenoid valve (14); an air pump (7) and a heat exchange structure (6) are symmetrically provided at both sides of the center of the upper end surface of the storage box (5); a partition (15) is provided at the center of the storage box (5); a through hole (406) is provided at the lower center of one side wall of the partition (15); a filter structure (4) is provided inside the through hole (406); and a fourth solenoid valve (16) is provided at the lower center of the other side wall of the storage box (5).

2. A sludge drying wastewater treatment system according to claim 1, characterized in that: The filtering structure (4) comprises a filter element (401), two first rubber pads (402), two pressure plates (403), a plurality of double-headed cylinders (404) and two second rubber pads (405); the plurality of double-headed cylinders (404) are respectively arranged on the upper and lower end surfaces and the front and rear end surfaces of the filter element (401); the two pressure plates (403) are respectively arranged on the two output ends of the plurality of double-headed cylinders (404) on the two end surfaces of the filter element (401); the two first rubber pads (402) are respectively arranged on one side wall of the two pressure plates (403), and the ends are respectively arranged on the side walls of the plurality of double-headed cylinders (404); and the two second rubber pads (405) are respectively arranged on the inner side walls of the through holes (406) on one side of the two first rubber pads (402).

3. A sludge drying wastewater treatment system according to claim 2, characterized in that: The filter element (401) comprises a first filter plate (40101) and a second filter plate (40102); the material of the first filter plate (40101) is a permeable membrane, and the material of the second filter plate (40102) is bamboo charcoal.

4. A sludge drying wastewater treatment system according to claim 1, characterized in that: The heat exchange structure (6) comprises a delivery pump (601), a heat exchange tube (602) and a plurality of guide rods (603); the input end of the delivery pump (601) passes through the upper end surface of the storage box (5) and reaches the lower part of the storage box (5); the output end of the delivery pump (601) passes through a side wall of the evaporation box (1) and reaches the upper part of the evaporation box (1); the heat exchange tube (602) is arranged on the output end of the delivery pump (601) inside the evaporation box (1); the plurality of guide rods (603) are arranged on the lower end surface of the heat exchange tube (602); the output end of the heat exchange tube (602) passes through the inner side wall of the evaporation box (1) and the side wall of the hot water tank (9) in sequence and reaches the inner side wall of the hot water tank (9).

5. A sludge drying wastewater treatment system according to claim 4, characterized in that: The plurality of guide rods (603) near the center are all arranged at an angle.

6. A sludge drying wastewater treatment system according to claim 1, characterized in that: A first solenoid valve (11) is provided at the lower center of one side wall of the hot water tank (9), and a pressure relief pipe (10) is provided at the center of one side of the upper end surface of the hot water tank (9).

7. A sludge drying wastewater treatment system according to claim 1, characterized in that: A pressure gauge (3) is provided at a lower portion of one side of the front end surface of the storage box (5).

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