Wastewater treatment device

Abstract

The utility model discloses a wastewater treatment device which comprises a box body, an electric flocculation catalytic oxidation unit, a sedimentation tank, a biological enzyme oxidation unit, a membrane filtration assembly and a control system are arranged in the box body, and the electric flocculation catalytic oxidation unit, the sedimentation tank, the biological enzyme oxidation unit and the membrane filtration assembly are communicated in sequence. The electric flocculation catalytic oxidation unit comprises an electrode system and a reactor, the bio-enzyme oxidation unit comprises a bio-enzyme oxidation pond and a bio-enzyme adding system, an aeration disc is arranged at the bottom of the bio-enzyme oxidation pond and connected with an air station, and the air station is connected with the bio-enzyme oxidation pond. The control system is communicated with the electric flocculation catalytic oxidation unit, the sedimentation tank, the biological enzyme oxidation unit and the membrane filtration assembly. According to the wastewater treatment device provided by the utility model, the electric flocculation catalytic oxidation unit, the sedimentation tank, the biological enzyme oxidation unit, the membrane filtration component and the control system are arranged in the box body, so that various pollutants in landfill leachate can be effectively removed.

Description

Technical Field

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

[0002] Small rural garbage transfer stations are relatively remote, garbage stays for a long time, and the wastewater generated by the transfer stations needs to be treated urgently.

[0003] There are many sources of wastewater in the transfer station, mainly domestic wastewater, flushing wastewater, and garbage leachate. Among them, domestic wastewater is the wastewater generated by the staff of the transfer station in their daily life and work; flushing wastewater mainly includes wastewater generated by the washing of the ground, vehicles and equipment; garbage leachate is generated during the compression process of garbage. It is characterized by high concentration of pollutants and a wide range of water quality changes. It is affected by factors such as garbage collection, climate, and seasonal changes. The amount of leachate fluctuates greatly, especially seasonal changes have a greater impact on the change in the amount of leachate. Generally, the output of leachate is larger in summer, and relatively less in winter. At the same time, the concentration of pollutants such as organic matter and ammonia nitrogen in the leachate is high, with a strong odor, and is black or gray-brown. Due to the high pollution of leachate, it must be treated as the key treatment object of the transfer station wastewater. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a wastewater treatment device, in which an electric flocculation catalytic oxidation unit, a sedimentation tank, a biological enzyme oxidation unit, a membrane filtration component and a control system are arranged in a box, which can effectively remove various pollutants in the landfill leachate.

[0005] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0006] A wastewater treatment device comprises a casing, wherein an electric flocculation catalytic oxidation unit, a sedimentation tank, a biological enzyme oxidation unit, a membrane filtration component and a control system are arranged in the casing, wherein the electric flocculation catalytic oxidation unit, the sedimentation tank, the biological enzyme oxidation unit and the membrane filtration component are sequentially connected, the electric flocculation catalytic oxidation unit comprises an electrode system and a reactor, the biological enzyme oxidation unit comprises a biological enzyme oxidation tank and a biological enzyme dosing system, an aeration disk is arranged at the bottom of the biological enzyme oxidation tank, the aeration disk is connected to an air station, and the control system is connected to the electric flocculation catalytic oxidation unit, the sedimentation tank, the biological enzyme oxidation unit and the membrane filtration component.

[0007] According to one aspect of the utility model, sensors are provided in the reactor and the sedimentation tank, and the sensors are sludge sensors or water level meters.

[0008] According to one aspect of the utility model, the reactor and the bottom of the sedimentation tank are connected to a mud discharge pipe, a mud discharge pump is provided on the mud discharge pipe, and the sensor is linked to the mud discharge pump.

[0009] According to one aspect of the utility model, the mud discharge pipe is connected to a plate and frame filter press.

[0010] According to one aspect of the utility model, a check valve is provided on the mud discharge pipe.

[0011] According to one aspect of the utility model, an enzyme activity monitor is provided in the bio-enzyme oxidation pool, and the bio-enzyme dosing system includes a containing container and a dosing pipeline.

[0012] According to one aspect of the utility model, a biological enzyme addition diaphragm pump is arranged on the feeding pipeline, and the enzyme activity monitor is linked to the biological enzyme addition diaphragm pump.

[0013] According to one aspect of the utility model, the liquid outlet of the bio-enzyme oxidation tank is connected to the membrane filtration assembly through a pipeline, and a clean water lifting pump is provided on the pipeline.

[0014] According to one aspect of the utility model, a water quality multi-factor analyzer is provided in the bio-enzyme oxidation pool, and the water quality multi-factor analyzer is linked to the clean water lifting pump.

[0015] According to one aspect of the present invention, the electrode system includes a plurality of electrode assemblies and a direct current power source.

[0016] Advantages of the implementation of the utility model: A wastewater treatment device includes a housing, wherein an electric flocculation catalytic oxidation unit, a sedimentation tank, a biological enzyme oxidation unit, a membrane filtration component and a control system are arranged in the housing, wherein the electric flocculation catalytic oxidation unit performs preliminary treatment on the sewage, so that soluble, colloidal and suspended pollutants in the water are effectively converted and removed. The sedimentation tank removes suspended matter and particulate matter in the wastewater, further improving the water quality. The biological enzyme oxidation unit further degrades organic matter in the sewage through enzyme catalytic oxidation, and has the advantages of high catalytic efficiency, mild reaction conditions, low requirements for wastewater quality and equipment conditions, fast reaction speed, wide adaptability to temperature, concentration and toxic substances, and can be reused. The membrane filtration component is then used for final filtration and purification to ensure that the final discharged water quality meets the standard. A control system is set up to achieve unmanned operation throughout the process. The wastewater treatment device adopts a skid-mounted integrated design, which not only optimizes the spatial layout, but also realizes efficient operation of the equipment and unmanned intelligent management throughout the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a wastewater treatment device described in the utility model.

[0019] Figure 1 Among them, 1. Reactor; 2. Electrode assembly; 3. Sedimentation tank; 4. Bio-enzyme oxidation tank; 5. Membrane filtration assembly; 6. Central electric control cabinet; 7. Air station; 8. Sensor; 9. Mud discharge pipe; 10. Mud discharge pump; 11. Aeration disk; 12. Enzyme activity monitor; 13. Water quality multi-factor analyzer; 14. DC power supply; 15. Container; 16. Enzyme addition diaphragm pump; 17. Clean water lifting pump; 18. Power interface; 19. Sewage collection tank; 20. Sewage collection tank water level gauge; 21. Sewage lifting pump. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] 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.

[0024] like Figure 1 As shown, a wastewater treatment device includes a housing, in which an electric flocculation catalytic oxidation unit, a sedimentation tank 3, a biological enzyme oxidation unit, a membrane filtration component 5 and a control system are arranged, the electric flocculation catalytic oxidation unit, the sedimentation tank 3, the biological enzyme oxidation unit and the membrane filtration component 5 are connected in sequence, the electric flocculation catalytic oxidation unit includes an electrode system and a reactor 1, the biological enzyme oxidation unit includes a biological enzyme oxidation tank 4 and a biological enzyme dosing system, an aeration plate 11 is arranged at the bottom of the biological enzyme oxidation tank 4, the aeration plate 11 is connected to the air station 7, and the control system is connected to the electric flocculation catalytic oxidation unit, the sedimentation tank 3, the biological enzyme oxidation unit and the membrane filtration component 5.

[0025] In actual application, the electro-flocculation catalytic oxidation unit, sedimentation tank 3, bio-enzyme oxidation unit, membrane filtration component 5 and control system are skid-mounted and integrated in the box. This modular design not only optimizes the spatial layout, but also realizes the efficient operation of the equipment and the intelligent management of unattended operation throughout the process. At the same time, it can reduce the on-site construction time and realize the convenience of ready-to-use. It can not only be used as an emergency equipment for wastewater treatment, but also can be moved to any required position at any time, and can also be hoisted as a whole. At the same time, gas exchange can be achieved through the negative pressure pipeline system of the garbage transfer station, without secondary pollution, which can improve working conditions and achieve safe and clean production.

[0026] In practical applications, the electrode system includes multiple groups of electrode assemblies 2 and a DC power supply 14. The feed port of the reactor 1 is connected to the liquid outlet of the sewage collection tank 19 through a feed pipe, and a sewage collection tank water level gauge 20 is provided in the sewage collection tank 19. A sewage lifting pump 21 is provided on the feed pipe, the overflow port of the reactor 1 is connected to the liquid inlet of the sedimentation tank 3, the liquid outlet of the sedimentation tank 3 is connected to the liquid inlet of the bio-enzyme oxidation tank 4, and the liquid outlet of the bio-enzyme oxidation tank 4 is connected to the membrane filtration assembly 5. When the water level gauge 20 of the sewage collection tank 19 reaches the set water level, the sewage lifting pump 21 starts and the entire equipment starts; when the water level gauge 20 of the sewage collection tank 19 drops to the set water level, the sewage lifting pump 21 stops and the equipment continues to run, thereby achieving water intake.

[0027] During operation, sewage is pumped into the reactor 1 for electrocoagulation catalytic oxidation. Electrocoagulation catalytic oxidation is to connect a plurality of parallel electrode assemblies 2 to a DC power supply 14, thereby generating an electric field between the plates, causing the water to be treated to flow into the gaps between the plates. At this time, the energized plates will undergo an electrochemical reaction, and the soluble anodes such as iron and aluminum will lose electrons to form metal cations Fe 2+ 、Al 3+ , and OH in the solution - A metal hydroxide colloidal flocculant is generated. The metal hydroxide colloidal flocculant has high activity and strong adsorption capacity. It can combine with colloids, suspended matter, soluble pollutants, bacteria, viruses, etc. in raw water to generate larger flocs. At the same time, the electro-flocculation catalytic oxidation process will also produce other effects such as redox, thereby effectively converting and removing soluble, colloidal and suspended pollutants in the water.

[0028] In practical applications, the main function of the sedimentation tank 3 is to remove suspended matter and particulate matter in wastewater and improve water quality. Furthermore, sensors 8 are provided in the reactor 1 and the sedimentation tank 3 for real-time monitoring of sludge concentration. A sludge discharge pipe 9 is connected to the bottom of the reactor 1 and the sedimentation tank 3, and the sludge discharge pipe 9 is connected to a plate-frame filter press. Furthermore, a check valve and a sludge discharge pump 10 are provided on the sludge discharge pipe 9, and the sludge discharge pump 10 is linked to the sensor 8. Specifically, the sensor 8 can select a sludge sensor or a water level gauge 20. When the sludge sensor senses that there is no sludge or the water level gauge 20 shows that there is water, the sludge discharge pump 10 stops, and the plate-frame filter press is manually operated to complete the sludge discharge.

[0029] In practical applications, an enzyme activity monitor 12 is provided in the bio-enzyme oxidation pool 4. The bio-enzyme dosing system includes a container and a feeding pipeline. The container is used to contain the bio-enzyme. Specifically, the bio-enzyme can be selected as a composite bio-enzyme, thereby producing a more excellent synergistic decontamination effect. Furthermore, a bio-enzyme addition diaphragm pump 16 is provided on the feeding pipeline, and the enzyme activity monitor 12 is linked to the bio-enzyme addition diaphragm pump 16.

[0030] During operation, the air station 7 continuously supplies compressed air to the bio-enzyme oxidation pool 4 at the beginning of the equipment startup to realize aeration operation, ensure the sufficient supply of oxygen required for the enzyme catalytic oxidation process, and also have the function of stirring and mixing to promote the uniform distribution and full reaction of organic matter in the wastewater. When the enzyme activity monitor 12 detects that the bio-enzyme activity drops to a limit value, the bio-enzyme addition diaphragm pump 16 starts and injects the prefabricated composite bio-enzyme. When the enzyme activity monitor 12 detects that the bio-enzyme activity reaches the set value, the bio-enzyme addition diaphragm pump 16 stops, and aeration continues to complete the addition of the bio-enzyme. Specifically, the bio-enzyme oxidation unit opens the more complex chemical chains in the pollutants through bio-enzymes, and the enzyme molecules can lengthen, twist and deform the chemical chains in the reactant molecules, making them easy to be hydrolyzed, thereby accelerating the decomposition of organic matter, rapidly degrading it into small molecules, and degrading from high molecular organic matter into low molecular organic matter or inorganic substances such as CO2 and H2O, reducing the CODcr value, thereby achieving the purpose of removing pollutants, and greatly reducing the cost of sewage treatment.

[0031] In practical applications, a water quality multi-factor analyzer 13 is also provided in the bio-enzyme oxidation pool 4. The liquid outlet of the bio-enzyme oxidation pool 4 is connected to the membrane filtration assembly 5 through a pipeline, and a clean water lifting pump 17 is provided on the pipeline, so as to lift the water treated by the bio-enzyme oxidation to the membrane filtration assembly 5 for further filtration and purification. Furthermore, the water quality multi-factor analyzer 13 is linked with the clean water lifting pump 17. During operation, when the water quality multi-factor detector monitors that the water quality meets the discharge standard, the clean water lifting pump 17 starts, the membrane filtration assembly 5 starts, and the treated water meets the discharge standard. When the water quality multi-factor detector is short of water, the clean water lifting pump 17 stops, the membrane filtration assembly 5 stops, and the equipment stops after a delay of 3 minutes, thereby avoiding equipment damage caused by lack of water.

[0032] In actual applications, the control system is a central electric control cabinet 6, which is responsible for receiving and processing signals from the water level meter 20, sludge sensor, enzyme activity monitor 12, water quality multi-factor analyzer 13, etc., and controls the actions of actuators such as the sewage lift pump 21, sludge pump 10, bio-enzyme addition diaphragm pump 16 and clean water lift pump 17 according to preset logic or algorithm, so as to realize unmanned intelligent management throughout the process. Furthermore, the central electric control cabinet 6 is provided with a power interface 18 for external main power supply, so that it can continuously and stably provide power support for the entire wastewater treatment device to ensure the normal operation of the equipment. Specifically, the power interface 18 can be a quick-plug three-phase five-wire main power interface 18. This design not only facilitates the access to the power supply, but also improves the stability and safety of the power connection.

[0033] Advantages of the implementation of the utility model: A wastewater treatment device includes a housing, wherein an electric flocculation catalytic oxidation unit, a sedimentation tank, a biological enzyme oxidation unit, a membrane filtration component and a control system are arranged in the housing, wherein the electric flocculation catalytic oxidation unit performs preliminary treatment on the sewage, so that soluble, colloidal and suspended pollutants in the water are effectively converted and removed. The sedimentation tank removes suspended matter and particulate matter in the wastewater, further improving the water quality. The biological enzyme oxidation unit further degrades organic matter in the sewage through enzyme catalytic oxidation, and has the advantages of high catalytic efficiency, mild reaction conditions, low requirements for wastewater quality and equipment conditions, fast reaction speed, wide adaptability to temperature, concentration and toxic substances, and can be reused. The membrane filtration component is then used for final filtration and purification to ensure that the final discharged water quality meets the standard. A control system is set up to achieve unmanned operation throughout the process. The wastewater treatment device adopts a skid-mounted integrated design, which not only optimizes the spatial layout, but also realizes efficient operation of the equipment and unmanned intelligent management throughout the process.

[0034] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A wastewater treatment device, comprising a housing, characterized in that: An electric flocculation catalytic oxidation unit, a sedimentation tank, a biological enzyme oxidation unit, a membrane filtration component and a control system are arranged in the box. The electric flocculation catalytic oxidation unit, the sedimentation tank, the biological enzyme oxidation unit and the membrane filtration component are connected in sequence. The electric flocculation catalytic oxidation unit includes an electrode system and a reactor. The biological enzyme oxidation unit includes a biological enzyme oxidation tank and a biological enzyme dosing system. An aeration disk is arranged at the bottom of the biological enzyme oxidation tank. The aeration disk is connected to an air station. The control system is connected to the electric flocculation catalytic oxidation unit, the sedimentation tank, the biological enzyme oxidation unit and the membrane filtration component.

2. A wastewater treatment device according to claim 1, characterized in that: The reactor and the sedimentation tank are provided with sensors, which are sludge sensors or water level meters.

3. A wastewater treatment device as claimed in claim 2, characterized in that: The reactor and the bottom of the sedimentation tank are connected to a mud discharge pipe, a mud discharge pump is arranged on the mud discharge pipe, and the sensor is linked to the mud discharge pump.

4. A wastewater treatment device as claimed in claim 3, characterized in that: The mud discharge pipe is connected to a plate and frame filter press.

5. A wastewater treatment device as claimed in claim 4, characterized in that: A check valve is arranged on the mud discharge pipe.

6. A wastewater treatment device according to claim 1, characterized in that: An enzyme activity monitor is arranged in the bio-enzyme oxidation pool, and the bio-enzyme dosing system comprises a containing container and a dosing pipeline.

7. A wastewater treatment device as claimed in claim 6, characterized in that: The feeding pipeline is provided with a biological enzyme adding diaphragm pump, and the enzyme activity monitor is linked with the biological enzyme adding diaphragm pump.

8. A wastewater treatment device as claimed in claim 1, characterized in that: The liquid outlet of the bio-enzyme oxidation tank is connected with the membrane filtration component through a pipeline, and a clean water lifting pump is arranged on the pipeline.

9. A wastewater treatment device as claimed in claim 8, characterized in that: A water quality multi-factor analyzer is arranged in the bio-enzyme oxidation pool, and the water quality multi-factor analyzer is linked with the clean water lifting pump.

10. A wastewater treatment device according to claim 1, characterized in that: The electrode system includes a plurality of electrode assemblies and a direct current power source.

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