Pharmaceutical wastewater treatment system

Abstract

The utility model discloses a pharmaceutical wastewater treatment system which comprises a pretreatment module, an A < 2 > O treatment module, a Fenton oxidation module and a recovery module, the Fenton oxidation module and the pretreatment module are both communicated with the A < 2 > O treatment module, and the recovery module is communicated with the Fenton oxidation module; the A2O treatment module comprises a hydrolysis acidification tank, an anaerobic tank, a denitrification tank, an aerobic tank and a sedimentation tank; the Fenton oxidation module comprises a Fenton buffer tank, integrated Fenton equipment and a Fenton clean water tank; the combined treatment process of the pretreatment module, the A2O treatment module and the Fenton oxidation module is lower in cost compared with other processes which are mainstream adopted at present, organic matters in wastewater can be converted into methane, carbon dioxide, water, hydrogen sulfide, ammonia and the like under the action of microorganisms, and an aerobic treatment method is adopted, so that the wastewater treatment efficiency is improved. The BOD (biochemical oxygen demand) removal rate is higher than that of a traditional activated sludge method, the sludge yield is small, the treatment effect is better, residual organic matters in the wastewater can be removed through strong oxidation of the Fenton reaction, and the quality of discharged water is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pharmaceutical wastewater treatment, especially a pharmaceutical wastewater treatment system. BACKGROUND

[0002] At present, the wastewater produced in the industrial production of the pharmaceutical industry is one of the domestic seriously polluted and difficult to treat industrial wastewater because of the complex composition, high organic matter content, great toxicity and deep color, especially poor biochemical property and intermittent discharge; the existing pharmaceutical wastewater treatment mainly adopts a combined process: 1, the device such as high-cost electro-catalysis and photocatalytic oxidation is adopted, the cost is higher, and it is difficult to maintain; 2, other simple pretreatment + activated sludge method is adopted, because of the complex composition and high toxicity of the pharmaceutical wastewater, the method is difficult to ensure drainage, and there are many problems in the system. UTILITARIAN CONTENT

[0003] To solve the above problems, the utility model provides a pharmaceutical wastewater treatment system, through the combined treatment process of pretreatment module, A 2 O treatment module and Fenton oxidation module, compared with other processes currently mainly used, the process has lower cost, and the organic matter in wastewater can be converted into methane, carbon dioxide, water, hydrogen sulfide and ammonia and the like through the action of microorganisms, the BOD (biochemical oxygen demand) removal rate of the adopted aerobic treatment method is higher than that of the traditional activated sludge method, the sludge production is less, the treatment effect is better, the integrated Fenton reaction equipment is adopted, the occupied area can be reduced, the strong oxidation of Fenton reaction can remove the residual organic matter of wastewater, and the water quality of drainage is guaranteed.

[0004] To achieve the above object, the utility model adopts the technical scheme of providing a pharmaceutical wastewater treatment system, including pretreatment module, A 2 O treatment module, Fenton oxidation module, recovery module, the Fenton oxidation module and the pretreatment module are communicated with the A 2 O treatment module, the recovery module is communicated with the Fenton oxidation module;The A 2The O treatment module comprises a hydrolysis acidification tank, an anaerobic tank, a denitrification tank, an aerobic tank and a sedimentation tank, one end of the anaerobic tank is communicated with the hydrolysis acidification tank, the other end of the anaerobic tank is communicated with the denitrification tank, one end of the aerobic tank is communicated with the sedimentation tank, the other end of the aerobic tank is communicated with the denitrification tank, the aerobic tank is further communicated with the anaerobic tank, the hydrolysis acidification tank is communicated with the pretreatment module, and the sedimentation tank is communicated with the recovery module and the Fenton oxidation module.

[0005] As a preferred solution, the pretreatment module comprises a high-cyanide high-salt wastewater collection tank, an evaporation crystallization device and a high-concentration wastewater collection tank, one end of the evaporation crystallization device is communicated with the high-cyanide high-salt wastewater collection tank, the other end of the evaporation crystallization device is communicated with the high-concentration wastewater collection tank, and the high-concentration wastewater collection tank is communicated with the hydrolysis acidification tank.

[0006] As a preferred solution, a low-concentration wastewater collection tank is further included, and the low-concentration wastewater collection tank is communicated with the hydrolysis acidification tank.

[0007] As a preferred solution, a comprehensive wastewater collection tank is further included, and the comprehensive wastewater collection tank is communicated with the hydrolysis acidification tank.

[0008] As a preferred solution, the aerobic tank comprises a primary aerobic tank and a secondary aerobic tank, the denitrification tank, the secondary aerobic tank and the sedimentation tank are all communicated with the primary aerobic tank, and the sedimentation tank and the anaerobic tank are communicated with the secondary aerobic tank.

[0009] As a preferred solution, the recovery module comprises a sludge concentration tank, a filter press and a to-be-discharged tank, the sedimentation tank and the integrated Fenton device are both communicated with the sludge concentration tank, the filter press is communicated with the sludge concentration tank, and the Fenton clean water tank and the Fenton buffer tank are both communicated with the to-be-discharged tank.

[0010] As a preferred solution, a sludge external transport device is further included, and the sludge external transport device is communicated with the filter press.

[0011] The utility model discloses the beneficial effect: through the pretreatment module, A 2The combined treatment process of the O treatment module and the Fenton oxidation module has lower cost compared with other processes currently widely used, and can convert the organic matters in the wastewater into methane, carbon dioxide, water, hydrogen sulfide and ammonia through the action of microorganisms, the BOD (biochemical oxygen demand) removal rate of the aerobic treatment method is higher than that of the traditional activated sludge method, the sludge production is less, the treatment effect is better, the integrated Fenton reaction equipment is used, the occupied area can be reduced, the strong oxidation of the Fenton reaction can remove the residual organic matters in the wastewater, and the water quality of the drainage is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a process flow diagram of the pharmaceutical wastewater treatment system of the utility model Figure One .

[0013] Figure 2 is a process flow diagram of the pharmaceutical wastewater treatment system of the utility model Figure Two .

[0014] The drawing number is explained: 100, pretreatment module; 110, high-concentration wastewater collection tank; 120, low-concentration wastewater collection tank; 130, high-cyanide high-salt wastewater collection tank; 140, evaporation crystallization equipment; 150, comprehensive wastewater collection tank; 200, A2O treatment module; 210, hydrolysis acidification tank; 220, anaerobic tank; 230, denitrification tank; 240, primary aerobic tank; 250, secondary aerobic tank; 260, sedimentation tank; 300, Fenton oxidation module; 310, Fenton buffer tank; 320, integrated Fenton equipment; 330, Fenton clean water tank; 400, recovery module; 410, sludge concentration tank; 420, filter press; 430, to-be-discharged tank; 440, sludge external transport equipment. DETAILED DESCRIPTION

[0015] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0016] In the description of the utility model, it is necessary to explain, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0017] In the description of the utility model, it is necessary to explain, unless otherwise expressly provided and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0018] As shown in Figures 1-2 The utility model provides a kind of pharmaceutical wastewater treatment system, including pretreatment module 100, A2O processing module 200, fenton oxidation module 300, recovery module 400, the fenton oxidation module 300 and the pretreatment module 100 are all communicated with the A2O processing module 200, the recovery module 400 is communicated with the fenton oxidation module 300;The A 2 O processing module 200 includes hydrolysis acidification tank 210, anaerobic tank 220, denitrification tank 230, aerobic tank and sedimentation tank 260, one end of the anaerobic tank 220 is communicated with the hydrolysis acidification tank 210, the other end of the anaerobic tank 220 is communicated with the denitrification tank 230, one end of the aerobic tank is communicated with the sedimentation tank 260, the other end of the aerobic tank is communicated with the denitrification tank 230, the aerobic tank is also communicated with the anaerobic tank 220, the hydrolysis acidification tank 210 is communicated with the pretreatment module 100, the sedimentation tank 260 is communicated with the recovery module 400 and the fenton oxidation module 300;The fenton oxidation module 300 includes fenton buffer tank 310, integrated fenton equipment 320, fenton clean water tank 330, one end of the fenton buffer tank 310 is communicated with the sedimentation tank 260, the other end of the fenton buffer tank 310 is communicated with the integrated fenton equipment 320, the integrated fenton equipment 320 is communicated with the fenton clean water tank 330, the integrated fenton equipment 320 and the fenton clean water tank 330 are all communicated with the recovery module 400;Through pretreatment module 100, A 2The combined treatment process of the treatment module 200 and the Fenton oxidation module 300 has lower cost compared with other processes currently widely used, and can convert the organic matter in the wastewater into methane, carbon dioxide, water, hydrogen sulfide and ammonia, etc. through the action of microorganisms, the BOD (biochemical oxygen demand) removal rate of the aerobic treatment method used is higher than that of the traditional activated sludge method, the amount of sludge produced is less, the treatment effect is better, the integrated Fenton reaction equipment used can reduce the occupied area, and the cost is low and easy to maintain, the strong oxidation of the Fenton reaction can remove the remaining organic matter in the wastewater to ensure the water quality of the drainage.

[0019] The pretreatment module 100 includes a high-cyanide high-salt wastewater collection tank 130, an evaporation crystallization device 140, and a high-concentration wastewater collection tank 110, one end of the evaporation crystallization device 140 is communicated with the high-cyanide high-salt wastewater collection tank 130, the other end of the evaporation crystallization device 140 is communicated with the high-concentration wastewater collection tank 110, and the high-concentration wastewater collection tank 110 is communicated with the hydrolysis acidification tank 210. It also includes a low-concentration wastewater collection tank 120, which is communicated with the hydrolysis acidification tank 210. It also includes a comprehensive wastewater collection tank 150, which is communicated with the hydrolysis acidification tank 210. The evaporation crystallization device 140 removes high cyanide and high salt in the wastewater in the high-cyanide high-salt wastewater collection tank 130, and after removal, it is sent to the high-concentration wastewater collection tank 110. The high-concentration wastewater collection tank 110, the low-concentration wastewater collection tank 120 and the comprehensive wastewater collection tank 150 can sequentially send the wastewater to the hydrolysis acidification tank 210 and the anaerobic tank 220 for hydrolysis acidification and anaerobic process, which can convert the organic matter in the wastewater into methane, carbon dioxide, water, hydrogen sulfide and ammonia, etc. through the action of microorganisms, wherein the comprehensive wastewater collection tank 150 collects other related wastewater during processing.

[0020] After entering the hydrolysis acidification tank 210 and the anaerobic tank 220, the wastewater enters the denitrification tank 230 for denitrification. After denitrification, the wastewater enters the aerobic tank, wherein the aerobic microorganisms decompose the remaining part of the organic matter into carbon dioxide and water, and the nitrifying bacteria oxidize the ammonia nitrogen into nitrate nitrogen, and the phosphorus-accumulating bacteria absorb a large amount of phosphorus and store it in the form of polyphosphate in the body, and the phosphorus is removed by discharging the residual sludge.

[0021] The aerobic tank comprises a first-stage aerobic tank 240 and a second-stage aerobic tank 250, the denitrification tank 230, the second-stage aerobic tank 250 and the sedimentation tank 260 are communicated with the first-stage aerobic tank 240, the sedimentation tank 260 and the anaerobic tank 220 are communicated with the second-stage aerobic tank 250, the first-stage aerobic tank 240 and the second-stage aerobic tank 250 are arranged to perform the cyclic mixed aeration method, the water quality and the water quantity impact load adaptability is strong, the BOD (biochemical oxygen demand) removal rate is higher than that of the traditional activated sludge method, the sludge production is less, and the treatment effect is better.

[0022] The recovery module 400 comprises a sludge concentration tank 410, a filter press 420 and a discharge tank 430, the sedimentation tank 260 and the integrated Fenton device 320 are communicated with the sludge concentration tank 410, the filter press 420 is communicated with the sludge concentration tank 410, the Fenton clean water tank 330 and the Fenton buffer tank 310 are communicated with the discharge tank 430, and the recovery module 400 further comprises a sludge external transport device 440, the sludge external transport device 440 is communicated with the filter press 420; the integrated Fenton device 320 can reduce the occupied area, is low in cost and convenient to maintain, the residual organic matter in wastewater is removed through the strong oxidation of the Fenton reaction, and the drainage water quality is ensured.

[0023] The above embodiment only describes the preferred embodiment of the present application, and does not limit the scope of the present application, and various deformations and improvements on the technical scheme of the present application made by the ordinary engineering technical personnel without departing from the design spirit of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. A pharmaceutical wastewater treatment system, characterized by, The application relates to a wastewater treatment system, which comprises a pretreatment module, an A 2 O treatment module, a Fenton oxidation module and a recovery module, wherein the Fenton oxidation module and the pretreatment module are communicated with the A 2 O treatment module, the recovery module is communicated with the Fenton oxidation module; the A 2 O treatment module comprises a hydrolytic acidification tank, an anaerobic tank, a denitrification tank, an aerobic tank and a sedimentation tank, one end of the anaerobic tank is communicated with the hydrolytic acidification tank, the other end of the anaerobic tank is communicated with the denitrification tank, one end of the aerobic tank is communicated with the sedimentation tank, the other end of the aerobic tank is communicated with the denitrification tank, the aerobic tank is further communicated with the anaerobic tank, the hydrolytic acidification tank is communicated with the pretreatment module, and the sedimentation tank is communicated with the recovery module and the Fenton oxidation module; the Fenton oxidation module comprises a Fenton buffer tank, an integrated Fenton device and a Fenton clean water tank, one end of the Fenton buffer tank is communicated with the sedimentation tank, the other end of the Fenton buffer tank is communicated with the integrated Fenton device, the integrated Fenton device is communicated with the Fenton clean water tank, and the integrated Fenton device and the Fenton clean water tank are both communicated with the recovery module.

2. The pharmaceutical wastewater treatment system according to claim 1, characterized in that: The pretreatment module comprises a high-cyanide high-salt wastewater collecting tank, an evaporation crystallization device and a high-concentration wastewater collecting tank, one end of the evaporation crystallization device is communicated with the high-cyanide high-salt wastewater collecting tank, the other end of the evaporation crystallization device is communicated with the high-concentration wastewater collecting tank, and the high-concentration wastewater collecting tank is communicated with the hydrolysis acidification tank.

3. The pharmaceutical wastewater treatment system according to claim 2, wherein: A low-concentration wastewater collecting tank is further included, and the low-concentration wastewater collecting tank is communicated with the hydrolysis acidification tank.

4. The pharmaceutical wastewater treatment system according to claim 2, characterized in that: A comprehensive wastewater collecting tank is further included, and the comprehensive wastewater collecting tank is communicated with the hydrolysis acidification tank.

5. The pharmaceutical wastewater treatment system according to claim 1, wherein: The aerobic tank comprises a first-stage aerobic tank and a second-stage aerobic tank, the denitrification tank, the second-stage aerobic tank and the sedimentation tank are communicated with the first-stage aerobic tank, and the sedimentation tank and the anaerobic tank are communicated with the second-stage aerobic tank.

6. The pharmaceutical wastewater treatment system according to claim 1, wherein: The recovery module comprises a sludge concentration tank, a filter press and a to-be-discharged tank, the sedimentation tank and the integrated Fenton device are communicated with the sludge concentration tank, the filter press is communicated with the sludge concentration tank, and the Fenton clean water tank and the Fenton buffer tank are communicated with the to-be-discharged tank.

7. The pharmaceutical wastewater treatment system according to claim 6, characterized in that: A sludge external transport device is further included, and the sludge external transport device is communicated with the filter press.

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