Sewage treatment equipment

Abstract

The utility model discloses sewage treatment equipment which comprises an oil separation tank, a coagulative precipitation tank, a UASB (Upflow Anaerobic Sludge Blanket) tank, an anaerobic precipitation tank, an electrochemical advanced oxidation system, an aerobic tank, a tail end precipitation tank, a sludge tank and a plurality of first dosing metering pumps, and a coagulant is added into the coagulative precipitation tank by the first dosing metering pump. The sewage treatment system has the advantages that the UASB tank, the electrochemical advanced oxidation system and the aerobic tank are used for treating organic matters in sewage in sequence, so that the organic matters in the sewage are thoroughly treated, and the treatment efficiency is relatively high.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to sewage treatment equipment. Background Art

[0002] At present, the industrial wastewater discharged frequently contains a large amount of harmful components such as organic suspended matter and chemical substances. If it is not treated, it will seriously pollute the environment and endanger human life and health. Moreover, with the development of industry, the discharge of urban industrial water and industrial wastewater will increase accordingly, and the contradiction between urban water supply and demand will become increasingly acute. Therefore, water conservation and pollution control will become the focus of society.

[0003] The existing sewage treatment equipment is provided with a coagulation sedimentation tank, into which the sewage is discharged, and a coagulant is added to the coagulation sedimentation tank to remove the calcium salt and phosphorus in the sewage to form a coagulation sedimentation. The existing sewage treatment equipment has the disadvantages of poor effect and low efficiency in treating organic matter in sewage, and improvements are needed. Utility Model Content

[0004] The utility model aims to provide a sewage treatment device which has good treatment effect on organic matter in sewage and high treatment efficiency.

[0005] The utility model provides a sewage treatment equipment, comprising a grease trap, a coagulation sedimentation tank, a UASB tank, an anaerobic sedimentation tank, an electrochemical advanced oxidation system, an aerobic tank, a terminal sedimentation tank, a sludge tank and a plurality of first dosing metering pumps, wherein the grease trap, the coagulation sedimentation tank, the UASB tank, the anaerobic sedimentation tank, the electrochemical advanced oxidation system, the aerobic tank, the terminal sedimentation tank and the sludge tank are arranged in sequence and are connected, a plurality of the first dosing metering pumps are connected with the coagulation sedimentation tank through pipelines, and the first dosing metering pumps add coagulant into the coagulation sedimentation tank.

[0006] Preferably, a regulating tank is provided between the grease trap and the coagulation sedimentation tank, the two sides of the regulating tank are respectively connected to the grease trap and the coagulation sedimentation tank pipelines, and a first lifting pump is provided at the pipeline in the regulating tank connected to the coagulation sedimentation tank;

[0007] A blower is arranged on one side outside the regulating tank, and the blower is connected to a pipeline in the regulating tank and blows air into the regulating tank.

[0008] Preferably, a liquid level controller is provided in the regulating tank, and the liquid level controller is used to monitor and control the liquid level of sewage entering the regulating tank from the grease trap.

[0009] Preferably, the coagulation sedimentation tank includes a coagulation reaction tank and an inclined tube sedimentation tank, a pH controller is provided in the coagulation reaction tank, the blower is connected to the coagulation reaction tank by a pipeline and blows air into the coagulation reaction tank, and the bottom end of the inclined tube sedimentation tank is connected to the sludge tank by a pipeline.

[0010] Preferably, a first transition tank is arranged between the inclined tube sedimentation tank and the UASB tank, and both sides of the first transition tank are respectively connected to the inclined tube sedimentation tank and the UASB tank by pipelines, and a second lifting pump is arranged at the pipeline connected to the UASB tank in the first transition tank.

[0011] Preferably, a water distribution system and a temperature sensor are provided in the UASB pool, the water distribution system is provided at the bottom end of the UASB pool, the temperature sensor is provided at the top end of the UASB pool, and the first transition pool is connected to the water distribution system in the UASB pool by a pipeline; a reflux pump is provided outside the UASB pool, and both ends of the reflux pump are respectively connected to the top end and the bottom end of the UASB pool by pipelines.

[0012] Preferably, a second transition tank is arranged between the anaerobic sedimentation tank and the electrochemical advanced oxidation system, one side of the second transition tank is connected to the anaerobic sedimentation tank by a pipeline, a third boost pump is arranged in the second transition tank, and the third boost pump is connected to the electrochemical advanced oxidation system pipeline.

[0013] Preferably, a bracket and an aeration system are provided in the aerobic tank, the aeration system is located on the bracket, the aerobic tank is connected to a blower via a pipeline, and both sides of the aerobic tank are respectively connected to an electrochemical advanced oxidation system and a terminal sedimentation tank via pipelines.

[0014] Preferably, a second dosing metering pump is provided on one side outside the terminal sedimentation tank, and the blower and the second dosing metering pump are both connected to the terminal sedimentation tank through pipelines.

[0015] Preferably, a pneumatic diaphragm pump and a plate-frame filter press are arranged on one side outside the sludge tank, and two ends of the pneumatic diaphragm pump are respectively connected to the sludge tank and the plate-frame filter press by pipelines.

[0016] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0017] 1. The sewage treatment equipment is equipped with a UASB tank, an electrochemical advanced oxidation system and an aerobic tank. The UASB tank mainly uses anaerobic bacteria to metabolize organic pollutants to pre-degrade and release phosphorus, and at the same time ammine some organic nitrogen; the electrochemical advanced oxidation system performs ring-opening and chain-breaking oxidation degradation on long-chain or benzene-ring-containing high-molecular organic matter in the wastewater, further improving the biodegradability of the wastewater and reducing the treatment load of the subsequent biochemical system; the aerobic tank uses aerobic biological composite bacteria to degrade organic pollutants, convert ammonia nitrogen into nitrate nitrogen, and absorb total phosphorus into cellular components; in this way, the organic matter in the sewage is fully treated with high treatment efficiency.

[0018] 2. A pneumatic diaphragm pump and a plate and frame filter press are installed outside the sludge pool. The pneumatic diaphragm pump is used to extract the sludge sediment in the sludge pool into the plate and frame filter press. The plate and frame filter press can dehydrate and solidify the sludge sediment, which has the advantage of reducing the volume of the generated sludge for easy transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a sewage treatment device according to an embodiment;

[0020] Figure 2 It is a schematic diagram of the structure of the grease trap and the regulating tank of the embodiment;

[0021] Figure 3 It is a schematic diagram of the structure of the coagulation sedimentation tank and the first transition tank of the embodiment;

[0022] Figure 4 is a schematic diagram of the structure of the UASB tank and the anaerobic sedimentation tank of the embodiment;

[0023] Figure 5 is a schematic diagram of the structure of the second transition tank, the electrochemical advanced oxidation system and the aerobic tank of the embodiment;

[0024] Figure 6 It is a schematic diagram of the structure of the terminal sedimentation tank, the second dosing metering pump and the sludge tank in the embodiment;

[0025] Figure 7 It is a schematic diagram of the structure of the pneumatic diaphragm pump and the plate and frame filter press of the embodiment.

[0026] Figure numerals: 1. Grease trap; 2. Regulating tank; 21. First lifting pump; 22. Liquid level controller; 23. Blower; 3. Coagulation sedimentation tank; 31. Coagulation reaction tank; 311. PH controller; 32. Inclined tube sedimentation tank; 4. First transition tank; 41. Second lifting pump; 5. UASB tank; 51. Water distribution system; 52. Temperature sensor; 53. Reflux pump; 6. Anaerobic sedimentation tank; 7. Second transition tank; 71. Third lifting pump; 8. Electrochemical advanced oxidation system; 9. Aerobic tank; 91. Bracket; 92. Aeration system; 10. Terminal sedimentation tank; 101. Second dosing metering pump; 11. Sludge tank; 12. First dosing metering pump; 13. Pneumatic diaphragm pump; 14. Plate and frame filter press. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-7 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Reference Figure 1 A sewage treatment equipment comprises a grease trap 1, a regulating tank 2, a coagulation sedimentation tank 3, a first transition tank 4, a UASB tank 5, an anaerobic sedimentation tank 6, a second transition tank 7, an electrochemical advanced aerobic system, an aerobic tank 9, a terminal sedimentation tank 10 and a sludge tank 11. The grease trap 1, the regulating tank 2, the coagulation sedimentation tank 3, the first transition tank 4, the UASB tank 5, the anaerobic sedimentation tank 6, the second transition tank 7, the electrochemical advanced aerobic system, the aerobic tank 9, the terminal sedimentation tank 10 and the sludge tank 11 are arranged in sequence and connected.

[0029] Reference Figure 2 and Figure 3, the sewage in the production workshop is discharged into the grease trap 1, the grease trap 1 intercepts and removes the petroleum in the sewage, one side of the regulating tank 2 is connected to the grease trap 1 by a pipeline, the sewage intercepted by the petroleum in the grease trap 1 is discharged into the regulating tank 2, a blower 23 is arranged on one side outside the regulating tank 2, the blower 23 is connected to the regulating tank 2 by a pipeline, air is blown into the regulating tank 2 by the blower 23, and the regulating tank 2 collects and uniformly regulates the production sewage treated by the grease trap 1. The coagulation sedimentation tank 3 includes a coagulation reaction tank 31 and an inclined tube sedimentation tank 32, the coagulation reaction tank 31 is connected to the inclined tube sedimentation tank 32, and the other side of the regulating tank 2 is connected to the coagulation reaction tank 31 by a pipeline. A first lifting pump 21 and a liquid level controller 22 are arranged in the regulating tank 2, the first lifting pump 21 is arranged at the pipeline connected to the coagulation reaction tank 31, and the liquid level controller 22 is arranged at the top of the regulating tank 2. When the wastewater intercepted by petroleum in the grease trap 1 is discharged into the regulating tank 2 , the liquid level controller 22 monitors the amount of wastewater discharged into the regulating tank 2 , so as to meet the requirement of quantitative discharge of wastewater into the regulating tank 2 .

[0030] The sewage in the regulating tank 2 is pumped into the coagulation reaction tank 31 by the first lifting pump 21. A plurality of first dosing metering pumps 12 are arranged on one side outside the coagulation reaction tank 31. The plurality of first dosing metering pumps 12 are connected to the coagulation reaction tank 31 through pipelines. In this way, PAM, PAC, CaCl 2 and acid / alkali solution are added to the coagulation reaction tank 31. A pH controller 311 is provided in the coagulation sedimentation tank 3 to monitor the pH value in the coagulation reaction tank 31. The coagulation reaction tank 31 is also connected to the blower 23 by a pipeline, and air is blown into the coagulation reaction tank 31 through the blower 23, so that the PAM, PAC, CaCl added to the coagulation reaction tank 31 2 The acid / alkali solution is fully coagulated with the sewage to perform primary calcium salt phosphorus removal on the sewage. The sewage after sufficient coagulation reaction in the coagulation reaction tank 31 is discharged into the inclined tube sedimentation tank 32, so that coagulation precipitation is formed in the inclined tube sedimentation tank 32. The inclined tube sedimentation tank 32 is connected to the sludge tank 11 through a pipeline, so that the precipitation formed in the inclined tube sedimentation tank 32 can be directly discharged into the sludge tank 11.

[0031] Reference Figure 3 and Figure 4The first transition tank 4 is arranged between the inclined tube sedimentation tank 32 and the UASB tank 5. The two sides of the first transition tank 4 are connected to the inclined tube sedimentation tank 32 and the UASB tank 5 by pipelines respectively. A water distribution system 51 and a temperature sensor 52 are arranged in the UASB tank 5. The water distribution system 51 is arranged at the bottom of the UASB tank 5, and the temperature sensor 52 is arranged at the top of the UASB tank 5. A second lifting pump 41 is arranged at the bottom of the first transition tank 4, and the water distribution system 51 and the second lifting pump 41 are connected by a pipeline. The sewage in the inclined tube sedimentation tank 32 is discharged into the first transition tank 4, and the first transition tank 4 collects and caches the front-end water for a short time, and then lifts it to the subsequent treatment link, and also adjusts the nutrient content of the sewage. Then, the second lifting pump 41 in the first transition tank 4 pumps the sewage into the UASB tank 5, and the temperature sensor 52 monitors the temperature of the sewage discharged into the UASB tank 5. Anaerobic bacteria mainly metabolize in the UASB tank 5, and their main function is to pre-degrade organic pollutants and release phosphorus, and at the same time ammine part of the organic nitrogen in the sewage.

[0032] Reference Figure 4 and Figure 5 In order to achieve a better treatment effect of sewage in the UASB tank 5, a reflux pump 53 is provided outside the UASB tank 5. The two ends of the reflux pump 53 are respectively connected to the top of the UASB tank 5 and the water distribution system 51. The sewage treated by the water distribution system 51 is then pumped into the UASB tank 5 under the action of the reflux pump 53 to be re-treated by the water distribution system 51. The anaerobic sedimentation tank 6 is connected to the UASB tank 5 by a pipeline, and the sewage in the UASB tank 5 is discharged into the anaerobic sedimentation tank 6. The anaerobic sedimentation tank 6 separates the mud and water from the UASB effluent. The other side of the anaerobic sedimentation tank 6 is connected to the second transition tank 7 by a pipeline, so that the sewage in the anaerobic sedimentation tank 6 is discharged into the second transition tank 7. The second transition tank 7 temporarily collects and caches the front-end water, and the transition is lifted to the subsequent treatment link. At the same time, the nutrient content can also be adjusted.

[0033] Reference Figure 6 and Figure 7In addition, a third lift pump 71 is provided at the bottom of the second transition tank 7, and a pipeline is used to connect the third lift pump 71 to the electrochemical advanced oxidation system 8, thereby pumping sewage into the electrochemical advanced oxidation system 8 through the third lift pump 71. The electrochemical advanced oxidation system 8 performs ring-opening and chain-breaking oxidation degradation on long-chain or benzene-containing high-molecular organic matter in the wastewater, further improving the biodegradability of the wastewater and reducing the processing load of the subsequent biochemical system. The other side of the electrochemical advanced oxidation system 8 is connected to the aerobic tank 9 by a pipeline, and a bracket 91 and an aeration system 92 are provided in the aerobic tank 9. The aeration system 92 is arranged on the bracket 91, and the aerobic tank 9 is connected to the blower 23, and air is discharged into the aerobic tank 9 through the blower 23. Sewage is discharged from the electrochemical advanced oxidation system 8 to the aerobic tank 9, and aerobic biological composite bacteria are used in the aerobic tank 9 to degrade organic pollutants, convert ammonia nitrogen into nitrate nitrogen, and absorb total phosphorus into cell components, thereby purifying wastewater.

[0034] The other side of the aerobic tank 9 is connected to the terminal sedimentation tank 10 through a pipeline, and the terminal sedimentation tank 10 is also connected to the blower 23 through a pipeline; after the organic pollutants in the sewage are degraded by the aerobic tank 9, the sewage is discharged into the terminal sedimentation tank 10, and at the same time, the blower 23 blows air into the terminal sedimentation tank 10. In addition, a plurality of second dosing metering pumps 101 are arranged on one side outside the terminal sedimentation tank 10, and PAM, PAC, CaCl are added into the aerobic tank 9 through the second dosing metering pumps 101. 2 and NaOH; so that the sewage undergoes mixing and flocculation reaction in the aerobic tank 9, and the sediment is separated into mud and water. The other side of the aerobic tank 9 is connected to the sludge tank 11 through a pipeline, and the sediment formed by the treatment in the aerobic tank 9 is discharged into the sludge tank 11, and the sewage treated in the aerobic tank 9 can meet the discharge standards. A pneumatic diaphragm pump 13 and a plate-frame filter press 14 are arranged on one side outside the sludge tank 11, and the two sides of the pneumatic diaphragm pump 13 are respectively connected to the sludge tank 11 and the plate-frame filter press 14, and the sludge sediment in the sludge tank 11 is extracted into the plate-frame filter press 14 through the pneumatic diaphragm pump 13 for dehydration and solidification treatment.

[0035] The specific implementation principle of the embodiment of the present application is as follows: the raw sewage is intercepted in the oil separator 1 to remove most of the floating oil and then enters the regulating tank 2; after being homogenized and uniformly regulated in the regulating tank 2, it is quantitatively extracted and lifted by the first lifting pump 21 into the coagulation reaction tank 31. At this stage, calcium ions are added to react with phosphate ions to generate insoluble substances such as calcium phosphate, alkali solution is added to adjust the pH value, PAC is added for coagulation reaction, PAM is added for flocculation reaction, and the pH controller 311 monitors the sewage entering the coagulation reaction tank 31; then it passes through the inclined tube sedimentation tank 32 for mud and water separation. After the sewage after sedimentation is briefly buffered and transitioned in the first transition tank 4, the sewage is quantitatively lifted by the lifting pump again into the UASB tank 5, and the organic pollutants are pre-degraded and phosphorus is released in the UASB tank 5, and part of the organic nitrogen is ammoniacal.

[0036] Then the sewage enters the anaerobic sedimentation tank 6 to precipitate and separate the anaerobic sludge brought out by the sewage, and the supernatant after precipitation and separation in the anaerobic sedimentation tank 6 flows into the second transition tank 7 by gravity; after the sewage is briefly buffered and transitioned in the second transition tank 7, it is quantitatively lifted by the third lifting pump 71 and enters the electrochemical advanced oxidation system 8 to perform ring-opening and chain-breaking oxidation degradation on long-chain or benzene-containing high-molecular organic matter in the wastewater, further improving the biodegradability of the wastewater and reducing the processing load of the subsequent biochemical system. Then the sewage enters the aerobic tank 9 to use aerobic biological composite bacteria to degrade organic pollutants, convert ammonia nitrogen into nitrate nitrogen, absorb total phosphorus and convert it into cell components to purify the wastewater. Finally, the sewage in the aerobic tank 9 enters the terminal sedimentation tank 10 for mixed flocculation reaction and sedimentation sludge and water separation. The precipitate formed in the terminal sedimentation tank 10 is discharged into the sludge tank 11, and the sewage after the mixed flocculation reaction in the terminal sedimentation tank 10 can meet the discharge standards. The pneumatic diaphragm pump 13 extracts the sludge sediment in the sludge pool 11 into the plate and frame filter press 14 for dehydration and solidification treatment.

[0037] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all protected by the utility model.

Claims

1. A sewage treatment equipment, characterized in that: It includes a grease trap, a coagulation sedimentation tank, a UASB tank, an anaerobic sedimentation tank, an electrochemical advanced oxidation system, an aerobic tank, a terminal sedimentation tank, a sludge tank and a plurality of first dosing metering pumps. The grease trap, the coagulation sedimentation tank, the UASB tank, the anaerobic sedimentation tank, the electrochemical advanced oxidation system, the aerobic tank, the terminal sedimentation tank and the sludge tank are arranged in sequence and are interconnected. A plurality of the first dosing metering pumps are connected to the coagulation sedimentation tank through pipelines. The first dosing metering pumps add coagulant into the coagulation sedimentation tank.

2. A sewage treatment equipment according to claim 1, characterized in that: A regulating tank is arranged between the grease trap and the coagulation sedimentation tank, and the two sides of the regulating tank are respectively connected to the grease trap and the coagulation sedimentation tank pipelines, and a first lifting pump is arranged at the pipeline in the regulating tank connected to the coagulation sedimentation tank; A blower is arranged on one side outside the regulating tank, and the blower is connected to a pipeline in the regulating tank and blows air into the regulating tank.

3. A sewage treatment equipment according to claim 2, characterized in that: A liquid level controller is provided in the regulating tank, and the liquid level controller is used to monitor and control the liquid level of sewage entering the regulating tank from the grease trap.

4. A sewage treatment equipment according to claim 2, characterized in that: The coagulation sedimentation tank comprises a coagulation reaction tank and an inclined tube sedimentation tank. A PH controller is arranged in the coagulation reaction tank. The blower is connected to the coagulation reaction tank through a pipeline and blows air into the coagulation reaction tank. The bottom end of the inclined tube sedimentation tank is connected to the sludge tank through a pipeline.

5. A sewage treatment equipment according to claim 4, characterized in that: A first transition tank is arranged between the inclined tube sedimentation tank and the UASB tank. Both sides of the first transition tank are respectively connected to the inclined tube sedimentation tank and the UASB tank by pipelines. A second lifting pump is arranged at the pipeline in the first transition tank connected to the UASB tank.

6. A sewage treatment equipment according to claim 5, characterized in that: A water distribution system and a temperature sensor are provided in the UASB pool, the water distribution system is provided at the bottom of the UASB pool, the temperature sensor is provided at the top of the UASB pool, and the first transition pool is connected to the water distribution system in the UASB pool by a pipeline; a reflux pump is provided outside the UASB pool, and two ends of the reflux pump are respectively connected to the top and bottom of the UASB pool by pipelines.

7. A sewage treatment equipment according to claim 1, characterized in that: A second transition tank is arranged between the anaerobic sedimentation tank and the electrochemical advanced oxidation system, one side of the second transition tank is connected to the anaerobic sedimentation tank by a pipeline, a third boost pump is arranged in the second transition tank, and the third boost pump is connected to the electrochemical advanced oxidation system pipeline.

8. A sewage treatment equipment according to claim 7, characterized in that: The aerobic pool is provided with a support and an aeration system, the aeration system is located on the support, the aerobic pool is connected with a blower through a pipeline, and the two sides of the aerobic pool are respectively connected with an electrochemical advanced oxidation system and a terminal sedimentation tank through pipelines.

9. A sewage treatment equipment according to claim 2, characterized in that: A second dosing metering pump is arranged on one side outside the terminal sedimentation tank, and the blower and the second dosing metering pump are both connected to the pipeline in the terminal sedimentation tank.

10. A sewage treatment equipment according to claim 1, characterized in that: A pneumatic diaphragm pump and a plate-frame filter press are arranged on one side outside the sludge tank, and two ends of the pneumatic diaphragm pump are respectively connected to the sludge tank and the plate-frame filter press by pipelines.

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