Sewage treatment device and sewage treatment method

Abstract

The embodiment of the present application provides a sewage treatment device and a sewage treatment method. The sewage treatment device includes a flocculation system, a drug delivery system, a pipeline system, an electrolysis system and a control system: wherein the flocculation system includes a tank body, which is connected to the sewage pipe; the drug delivery system includes a first drug storage tank and a second drug storage tank, which store organic flocculant solution and inorganic flocculant solution; the flocculation system is connected to the drug delivery system and the electrolysis system through a pipeline system; the control system is respectively connected to the flocculation system, the drug delivery system, the pipeline system, and the electrolysis system by signal. The embodiment of the present application sets a flocculation system, a drug delivery system, a pipeline system, an electrolysis system and a control system, and sequentially performs flocculation treatment and electrochemical treatment on the sewage, thereby filtering out the treatment liquid that meets the discharge standard and completing the harmless treatment of feces. The treatment device has a compact structure and a high degree of automation, and can be easily integrated into existing toilets, with good social, economic and ecological benefits.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and more specifically, to a sewage treatment device and a sewage treatment method. Background Art

[0002] Feces is a mixture of various inorganic substances, organic substances and water. If feces and sewage are not properly handled, they can easily cause harm to the environment and people. For example, feces contain a variety of organic pollutants and various forms of inorganic nitrogen, inorganic phosphorus and other substances. Untreated feces are directly discharged into the natural field, which can easily cause pollution and eutrophication of natural water bodies, seriously affecting the original ecological balance of water bodies; feces contain a variety of pathogens, which is one of the important causes of epidemics; feces are rich in organic matter, which is often a breeding ground for disease vectors such as mosquitoes, flies, fleas, and rats; in addition, a large amount of organic matter in feces often decomposes to produce a variety of toxic and harmful gases after decay. At the same time, people excrete a large amount of feces every day.

[0003] Fecal sewage in cities is mostly treated in a centralized manner, and sewage is transported to sewage treatment plants through sewer systems or fecal suction trucks. Sewage treatment plants are generally located in the suburbs and are large in scale and equipment. For the vast rural areas, dry toilets are usually used to collect feces. With the use of artificial synthetic fertilizers such as chemical fertilizers, the use of organic fertilizers has been greatly reduced, resulting in the random discharge of feces in nature. Patent CN214170069U provides a mobile toilet with a feces treatment system, which achieves preliminary dry and wet separation of feces by setting a partition under the toilet bowl, reducing the treatment cost of feces and sewage; Patent CN109335122A provides a feces baler, which seals human feces and urine through a baler, and fills a quantitative additive into the bag to ferment the feces into organic fertilizer or livestock and poultry feed; Patent CN217645942U provides a feces and sewage separation device that achieves solid-liquid separation by filtering and extrusion. The above patents only seal and pack feces by physical means, and do not treat harmful substances in feces.

[0004] In summary, the sewage treatment methods in the prior art have technical problems of not treating harmful substances and affecting the environment and human health. Summary of the invention

[0005] In view of the shortcomings of the existing methods, the present application proposes a sewage treatment device and a sewage treatment method to solve the technical problem that the sewage treatment methods in the prior art have untreated harmful substances, which affect the environment and human health.

[0006] The present application provides a sewage treatment device and a sewage treatment method, specifically:

[0007] In a first aspect, an embodiment of the present application provides a sewage treatment device, including a flocculation system, a drug delivery system, a piping system, an electrolysis system, and a control system:

[0008] Wherein, the flocculation system at least comprises a tank body, and the tank body is connected to a sewage pipe;

[0009] The drug delivery system comprises at least a first drug storage tank and a second drug storage tank, wherein the first drug storage tank stores an organic flocculant solution, and the second drug storage tank stores an inorganic flocculant solution;

[0010] The flocculation system is respectively connected with the drug delivery system and the electrolysis system through the pipeline system;

[0011] The control system is respectively connected to the flocculation system, the drug delivery system, the pipeline system, and the electrolysis system by signals.

[0012] In some embodiments of the present application, the flocculation system further includes a cover plate and a sealing gasket, the tank body is open on one side of the cover plate, the cover plate covers the opening of the tank body, the sealing gasket is located between the tank body and the cover plate, and the cover plate has a sewage inlet.

[0013] In some embodiments of the present application, the drug delivery system includes a first flow pump and a second flow pump, and the cover plate has a first drug inlet and a second drug inlet. The first flow pump is respectively connected to the first drug storage tank and the first drug inlet, and the second flow pump is respectively connected to the second drug storage tank and the second drug inlet.

[0014] In some embodiments of the present application, the flocculation system also includes a motor, a shaft connector and an agitator, the motor is located on the side of the cover away from the tank body, the agitator is at least partially located inside the tank body, and the motor is connected to the agitator via the shaft connector.

[0015] In some embodiments of the present application, the flocculation system further includes a separation net, which is located inside the tank body and perpendicular to the axis of the tank body.

[0016] In some embodiments of the present application, the material of the tank body and the isolation net includes corrosion-resistant stainless steel.

[0017] In some embodiments of the present application, the organic flocculant solution includes a polyacrylamide solution, and the concentration of the polyacrylamide solution is not less than 500 mg / L and not more than 800 mg / L;

[0018] The inorganic flocculant solution includes a polyferric sulfate solution, and the concentration of the polyferric sulfate solution is not less than 800 mg / L and not more than 1000 mg / L.

[0019] In some embodiments of the present application, the electrolysis system includes an electrolytic cell box, an electrode and an ultrasonic generator, the electrolytic cell box is connected to the tank body, the electrode is located in the electrolytic cell box, and the ultrasonic generator faces the electrolytic cell box.

[0020] In some embodiments of the present application, the pipeline system includes a sludge pump, a pre-filter and a post-filter, the electrolytic cell box has a box liquid inlet and a box liquid outlet, the pre-filter is connected to the flocculation system and the sludge pump respectively, the sludge pump is also connected to the box liquid inlet, and the post-filter is connected to the box liquid outlet.

[0021] In a second aspect, an embodiment of the present application provides a sewage treatment method, using a sewage treatment device as described in any embodiment of the first aspect, comprising the following steps:

[0022] The sewage to be treated is passed into the tank of the flocculation system;

[0023] The organic flocculant solution and the inorganic flocculant solution stored in the drug delivery system are introduced into the tank; stirred, allowed to stand, and separated into a supernatant liquid and a lower turbid liquid;

[0024] The supernatant is introduced into the electrolysis system for electrolysis to obtain a treated solution.

[0025] The beneficial technical effects brought about by the technical solution provided in the embodiments of the present application include: the embodiments of the present application set up a flocculation system, a drug delivery system, a piping system, an electrolysis system and a control system to sequentially perform flocculation treatment and electrochemical treatment on sewage, thereby filtering out a treated liquid that meets the discharge standards and completing the harmless treatment of feces. The treatment device has a compact structure and a high degree of automation, can be easily integrated into existing toilets, and has good social, economic and ecological benefits.

[0026] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 A schematic diagram of the structure of a sewage treatment device provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of the structure of a flocculation system provided in an embodiment of the present application;

[0030] Figure 3A schematic diagram of the structure of an electrolysis system provided in an embodiment of the present application;

[0031] Figure 4 A control schematic diagram of a sewage treatment device provided in an embodiment of the present application;

[0032] Figure 5 A control schedule for a sewage treatment method provided in an embodiment of the present application.

[0033] Markings in the figure:

[0034] 100—flocculation system; 101—wastewater inlet; 102—sealing pad; 103—tank body; 104—isolation net; 105—tank body liquid outlet; 106—motor; 107—first drug inlet; 108—second drug inlet; 109—shaft connector; 110—support frame; 111—cover plate; 112—agitator; 113—mud outlet; 200—first drug storage tank; 201—second drug storage tank; 202—first flow pump; 203—second flow pump; 204—first Bracket; 205—second bracket; 300—electrolysis system; 301—electrolytic cell box; 302—electrode; 303—box reinforcement rib; 304—box liquid outlet; 305—support plate; 306—box liquid inlet; 307—ultrasonic generator; 400—control system; 401—pre-filter; 402—first liquid inlet pipe; 403—sludge pump; 404—second liquid inlet pipe; 405—first liquid outlet pipe; 406—post-filter; 407—switch. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0036] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements, and / or components, but does not exclude the implementation of other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the technical field. It should be understood that when we refer to an element as being "connected" to another element, the one element may be directly connected to the other element, or it may refer to the one element and the other element establishing a connection relationship through an intermediate element. In addition, the "connection" used herein may include a wireless connection.

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that the following implementation methods can refer to, learn from or combine with each other, and the same terms, similar features and similar implementation steps in different implementation methods will not be described repeatedly.

[0038] The present application provides a sewage treatment device and a sewage treatment method, specifically:

[0039] In a first aspect, an embodiment of the present application provides a sewage treatment device, such as Figure 1 As shown, Figure 1 A schematic diagram of the structure of a sewage treatment device provided in an embodiment of the present application.

[0040] The sewage treatment device includes a flocculation system 100, a drug delivery system, a pipeline system, an electrolysis system 300 and a control system 400:

[0041] Wherein, the flocculation system 100 at least includes a tank body 103, and the tank body 103 is connected to a sewage pipe;

[0042] The drug delivery system at least comprises a first drug storage tank 200 and a second drug storage tank 201, wherein the first drug storage tank 200 stores an organic flocculant solution, and the second drug storage tank 201 stores an inorganic flocculant solution;

[0043] The flocculation system 100 is connected to the drug delivery system and the electrolysis system 300 respectively through the pipeline system;

[0044] The control system 400 is signal-connected to the flocculation system 100 , the drug delivery system, the pipeline system, and the electrolysis system 300 , respectively.

[0045] The embodiment of the present application sets up a flocculation system 100, a drug delivery system, a pipeline system, an electrolysis system 300 and a control system 400 to sequentially perform flocculation treatment and electrochemical treatment on sewage.

[0046] Among them, the sewage pipe passes the fecal sewage into the tank body 103. When the sewage level reaches a certain height, the control system 400 starts working after receiving the liquid level signal. The control system 400 sends instructions to the drug delivery system, and the first drug storage tank 200 and the second drug storage tank 201 respectively provide organic flocculant solution and inorganic flocculant solution to the tank body 103. The organic flocculant solution and the inorganic flocculant solution are passed into the tank body 103 at a volume ratio of 1:1, and stop after 1 minute. Stir the fecal sewage in the tank body 103 to fully mix the sewage and flocculant, and the stirring time is 5 minutes. After the stirring time is up, the sewage in the tank body 103 is allowed to stand for 30 minutes. After the sewage is allowed to stand for 30 minutes, the insoluble organic and inorganic substances in the sewage are initially separated by solid and liquid through agglomeration. The insoluble substances are precipitated to the bottom of the tank body 103 to form a lower layer of turbid liquid, and the upper supernatant is relatively clean.

[0047] Optionally, the first medicine storage tank 200 and the second medicine storage tank 201 are two independent medicine storage containers.

[0048] Optionally, the first medicine storage tank 200 and the second medicine storage tank 201 are different chambers in the same medicine storage container.

[0049] In some embodiments of the present application, the flocculation system 100 further includes a cover plate 111 and a sealing gasket 102, the tank body 103 is open on one side of the cover plate 111, the cover plate 111 covers the opening of the tank body 103, the sealing gasket 102 is located between the tank body 103 and the cover plate 111, and the cover plate 111 has a sewage inlet 101.

[0050] like Figure 2 As shown, Figure 2 A schematic structural diagram of a flocculation system 100 provided in an embodiment of the present application.

[0051] In this embodiment, the sewage pipe is passed into the tank body 103 through the sewage opening on the cover plate 111. The sealing gasket 102 can increase the sealing connection between the cover plate 111 and the tank body 103, thereby isolating the inside and outside of the tank body 103. The cover plate 111 and the sealing gasket 102 are fixedly connected to the tank body 103 by hexagonal bolts.

[0052] In some embodiments of the present application, the drug delivery system includes a first flow pump 202 and a second flow pump 203, and the cover plate 111 has a first drug inlet 107 and a second drug inlet 108. The first flow pump 202 is connected to the first drug storage tank 200 and the first drug inlet 107 respectively, and the second flow pump 203 is connected to the second drug storage tank 201 and the second drug inlet 108 respectively.

[0053] In this embodiment, the drug delivery system also includes a first bracket 204 and a second bracket 205, and the first bracket 204 and the second bracket 205 are respectively used to raise the first drug storage tank 200 and the second drug storage tank 201. The first drug storage tank 200 and the second drug storage tank 201 are provided with outlets, and the organic flocculant solution and the inorganic flocculant solution flow into the pipeline system under the action of gravity.

[0054] In addition to the sewage inlet 101, the cover plate 111 includes at least a first drug inlet 107 and a second drug inlet 108. Driven by the first flow pump 202 and the second flow pump 203, the pressure in the pipeline system increases, and the organic flocculant solution and the inorganic flocculant solution are pushed to move faster into the tank 103.

[0055] In some embodiments of the present application, the flocculation system 100 also includes a motor 106, a shaft connector 109 and an agitator 112, the motor 106 is located on the side of the cover plate 111 away from the tank body 103, the agitator 112 is at least partially located inside the tank body 103, and the motor 106 is connected to the agitator 112 via the shaft connector 109.

[0056] In this embodiment, the flocculation system 100 further includes a support frame 110, which is used to raise the motor 106. The motor 106 is located on the support frame 110 so as to maintain a certain distance from the cover plate 111. The shaft coupler 109 is at least partially located inside the support frame 110, one end of which is connected to the motor 106 and the other end of which is facing the tank body 103. One end of the agitator 112 is a paddle extending into the tank body 103, and the other end is a shaft connected to the shaft coupler 109.

[0057] The motor 106 drives the shaft coupling 109 to rotate, and the agitator 112 also rotates therewith, and the blade end stirs the mixed feces sewage in the tank 103 to fully mix the sewage and the flocculant. After reaching the preset stirring time, the motor 106 stops and performs a static process.

[0058] In some embodiments of the present application, the flocculation system 100 further includes an isolation net 104 , which is located inside the tank body 103 and is perpendicular to the axis of the tank body 103 .

[0059] In this embodiment, after sewage and flocculant solution are introduced into the flocculation system 100, the insoluble solid particles in the sewage gradually aggregate and grow larger, or form flocs, thereby accelerating the aggregation and settling of the particles.

[0060] At the beginning of the flocculation process, smaller solid particles pass through the mesh of the isolation net 104 to reach the lower layer of the isolation net 104; at the end of the flocculation process, the volume of the solid particles in the lower layer of the isolation net 104 gradually increases, and the cross-sectional area exceeds the opening area of ​​a single mesh of the isolation net 104. At this time, the solid particles cannot pass through the mesh from the lower layer of the isolation net 104 to the upper layer of the isolation net 104. When the supernatant liquid in the upper layer is pumped away, the mixed liquid is stirred, causing the solid particles to tumble upwards and contaminate the supernatant liquid again.

[0061] The opening area of ​​each mesh of the isolation net 104 should not be too large, otherwise it will not be able to prevent the large particles at the end of the flocculation process from turning up, nor should it be too small, otherwise it will not be able to allow the small particles at the beginning of the flocculation process to fall smoothly. Optionally, the mesh number of the isolation net 104 is not less than 100 and not more than 300. At this time, the opening area of ​​the mesh meets the actual production needs.

[0062] The installation position of the isolation net 104 is as close as possible to the interface between the upper clear liquid and the lower turbid liquid. Optionally, the distance between the isolation net 104 and the bottom of the tank body 103 is equal to 1 / 3 of the total depth of the tank body 103.

[0063] The supernatant liquid flows out from the tank body liquid outlet 105 , and the lower turbid liquid flows out from the mud outlet 113 .

[0064] In some embodiments of the present application, the material of the tank body 103 and the isolation net 104 includes corrosion-resistant stainless steel.

[0065] The tank body 103 and the isolation net 104 are structures that are in direct contact with fecal sewage and are made of corrosion-resistant stainless steel to prevent rapid rust damage and extend the service life of the device.

[0066] In some embodiments of the present application, the organic flocculant solution includes a polyacrylamide solution, and the concentration of the polyacrylamide solution is not less than 500 mg / L and not more than 800 mg / L;

[0067] The inorganic flocculant solution includes a polyferric sulfate solution, and the concentration of the polyferric sulfate solution is not less than 800 mg / L and not more than 1000 mg / L.

[0068] The polyacrylamide solution and the polyferric sulfate solution are introduced into the tank 103 at a volume ratio of 1:1.

[0069] In some embodiments of the present application, the electrolysis system 300 includes an electrolytic cell body 301 , an electrode 302 and an ultrasonic generator 307 , the electrolytic cell body 301 is connected to the tank body 103 , the electrode 302 is located inside the electrolytic cell body 301 , and the ultrasonic generator 307 faces the electrolytic cell body 301 .

[0070] like Figure 3 As shown, Figure 3 A schematic diagram of the structure of an electrolysis system 300 provided in an embodiment of the present application.

[0071] In this embodiment, the supernatant in the tank 103 is passed into the electrolytic tank box 301. When the liquid level reaches the electrolysis condition, the control system 400 supplies power to the electrode 302 and the ultrasonic generator 307 through the electric cabinet. The organic and inorganic substances in the solution undergo redox reactions on the surface of the electrode 302 under the "cavitation effect" of ultrasound and are degraded, and the harmful substances in the sewage are eliminated. The electrolysis system 300 stops working after 150 minutes. The treated liquid is purified and reaches the discharge condition.

[0072] The electrolysis system 300 further includes a box body reinforcement rib 303, a support plate and a partition. The box body reinforcement rib 303 is arranged on the side wall of the electrolytic cell box body 301 to increase the strength of the joint surface. Without increasing the thickness of the box body wall, the strength and rigidity of the box body are enhanced to save material usage, reduce weight and reduce costs. The box body distortion caused by uneven stress due to the difference in wall thickness can be overcome.

[0073] The support plate is used to fix the ultrasonic generator 307. The fixing position of the ultrasonic generator 307 is higher than the liquid surface, and emits ultrasonic waves toward the liquid surface.

[0074] The electrolytic tank box 301 is divided into different small electrolytic cells by partitions.

[0075] Each small electrolytic cell is connected to a discharge pipe 405 , and multiple discharge pipes 405 converge into a post-filter 406 .

[0076] Optionally, the material of the electrolytic cell housing 301 includes plastic material, which is formed by thermoplastic processing.

[0077] Optionally, the material of the electrode 302 includes titanium-based oxide.

[0078] Also optionally, the ultrasonic generator 307 is installed on a support plate to enhance the electrolysis efficiency through ultrasonic "cavitation effect" during electrolysis.

[0079] In some embodiments of the present application, the pipeline system includes a sludge pump 403, a pre-filter 401 and a post-filter 406, the electrolytic cell box 301 has a box liquid inlet 306 and a box liquid outlet 304, the pre-filter 401 is connected to the flocculation system 100 and the sludge pump 403 respectively, the sludge pump 403 is also connected to the box liquid inlet 306, and the post-filter 406 is connected to the box liquid outlet 304.

[0080] The sludge pump 403 is running to suck out the supernatant in the tank 103 through the tank outlet 105, and the supernatant passes through the pre-filter 401. The pre-filter 401 can further filter out large particles and insoluble substances in the liquid through the built-in filter screen to reduce the burden of subsequent processes. The tank outlet 304 is connected to the outlet pipe 305.

[0081] The supernatant first enters the sludge pump 403 from the tank 103 through the first liquid inlet pipe 402, and then enters the electrolysis system 300 from the sludge pump 403 through the second liquid inlet pipe 404. The sludge pump 403 stops working after 5 minutes. The electrolysis system 300 stops working after 150 minutes. The switch 407 that controls the opening and closing of the liquid outlet 304 of the box is turned on, and the treated liquid is discharged through the post-filter 406.

[0082] Optionally, the pipeline is made of polyvinyl chloride (PVC), the pre-filter 401 has a built-in filter screen with a mesh size of 500, and the post-filter 406 is filled with activated carbon.

[0083] In a second aspect, an embodiment of the present application provides a sewage treatment method, using a sewage treatment device as described in any embodiment of the first aspect, comprising the following steps:

[0084] The sewage to be treated is introduced into the tank 103 of the flocculation system 100;

[0085] The organic flocculant solution and the inorganic flocculant solution stored in the drug delivery system are introduced into the tank 103; stirred, allowed to stand, and separated into a supernatant liquid and a lower turbid liquid;

[0086] The supernatant is introduced into the electrolysis system 300 for electrolysis to obtain a treated solution.

[0087] like Figure 4 and Figure 5 As shown, Figure 4 A control schematic diagram of a sewage treatment device provided in an embodiment of the present application; Figure 5 A control schedule for a sewage treatment method provided in an embodiment of the present application.

[0088] The control system 400 is respectively connected to the flocculation system 100, the drug delivery system, the pipeline system, and the electrolysis system 300. The control system 400 controls a series of electrical appliances in the system through a programmable logic controller, so that the electrical appliances operate according to the set process parameters.

[0089] In a specific embodiment, the control system 400 includes multiple modules that control different electrical appliances respectively. The control system 400 includes module 1, module 2, module 3, module 4, module 5, and module 6, which are respectively connected to the first flow pump 202, the second flow pump 203, the motor 106, the sludge pump 403, the electrode 302 and the ultrasonic generator 307, and the solenoid valve signal of the control switch 407.

[0090] The step of "introducing the organic flocculant solution and the inorganic flocculant solution stored in the drug delivery system into the tank 103" includes: controlling module 1 and module 2 to turn on the first flow pump 202 and the second flow pump 203 for 1 minute, and other modules control the corresponding electrical appliances to turn off.

[0091] The step "stirring" includes: the control module 3 drives the motor 106 to work, the motor 106 drives the stirrer 112 to rotate, stirs the sewage, and makes the sewage and the flocculant fully mixed, which lasts for 5 minutes, and other modules control the corresponding electrical appliances to be turned off.

[0092] The step of "standing" includes: modules 1, 2, 3, 4, 5 and 6 control corresponding electrical appliances to be turned off for 30 minutes.

[0093] The step of "introducing the supernatant into the electrolysis system 300" includes: module 5 controls the electrode 302 and the ultrasonic generator 307 to work, electrolyzes harmful substances in the sewage for 150 minutes, and other modules control the corresponding electrical appliances to shut down.

[0094] After the step of "obtaining the treated liquid", the process includes: module 6 controls the switch 407 to open, and the treated liquid that meets the emission standards flows out from the liquid outlet 304 of the box body after passing through the post-filter 406, which lasts for 5 minutes, and other modules control the corresponding electrical appliances to shut down.

[0095] Compared with the prior art, the application of the embodiments of the present application can achieve at least the following beneficial effects: the embodiments of the present application set up a flocculation system 100, a drug delivery system, a pipeline system, an electrolysis system 300 and a control system 400, and sequentially perform flocculation treatment and electrochemical treatment on the sewage, thereby filtering out the treated liquid that meets the discharge standards and completing the harmless treatment of feces. The treatment device has a compact structure and a high degree of automation, can be easily integrated into existing toilets, and has good social, economic and ecological benefits.

[0096] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0097] The terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0098] In the description of this application, 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 directly connected, or 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 this application can be understood according to specific circumstances.

[0099] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0100] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, altered, combined, or deleted. Further, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted.

[0101] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0102] The above is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the scheme of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A sewage treatment device, characterized in that: Including flocculation system, drug delivery system, piping system, electrolysis system and control system: Wherein, the flocculation system at least comprises a tank body, and the tank body is connected to a sewage pipe; The drug delivery system comprises at least a first drug storage tank and a second drug storage tank, wherein the first drug storage tank stores an organic flocculant solution, and the second drug storage tank stores an inorganic flocculant solution, wherein the organic flocculant solution comprises a polyacrylamide solution, and the inorganic flocculant solution comprises a polymerized ferric sulfate solution; The flocculation system is respectively connected with the drug delivery system and the electrolysis system through the pipeline system; The control system is respectively connected to the flocculation system, the drug delivery system, the pipeline system, and the electrolysis system by signals; Wherein, the flocculation system further includes a cover plate, a sealing gasket, an isolation net and an agitator, the tank body is open on one side toward the cover plate, the cover plate covers the opening of the tank body, the sealing gasket is located between the tank body and the cover plate, the cover plate has a sewage inlet, the isolation net is located inside the tank body and perpendicular to the axis of the tank body, the mesh number of the isolation net is not less than 100 and not more than 300, the agitator is at least partially located inside the tank body, the isolation net is located below the agitator, the tank body liquid outlet is located above the isolation net, and the tank body mud outlet is located below the isolation net; The electrolysis system comprises an electrolytic cell box, an electrode and an ultrasonic generator, wherein the electrolytic cell box is in communication with the tank body, the electrode is located in the electrolytic cell box, the ultrasonic generator faces the electrolytic cell box, the fixed position of the ultrasonic generator is higher than the liquid level in the electrolytic cell box, and the ultrasonic generator emits ultrasonic waves toward the liquid level; The pipeline system includes a sludge pump, a pre-filter and a post-filter. The electrolytic cell box has a box liquid inlet and a box liquid outlet. The pre-filter is connected to the flocculation system and the sludge pump respectively. The sludge pump is also connected to the box liquid inlet. The sludge pump sucks out the supernatant in the tank through the tank liquid outlet. The post-filter is connected to the box liquid outlet.

2. The sewage treatment device according to claim 1, characterized in that: The drug delivery system includes a first flow pump and a second flow pump, and the cover plate is provided with a first drug inlet and a second drug inlet. The first flow pump is respectively connected to the first drug storage tank and the first drug inlet, and the second flow pump is respectively connected to the second drug storage tank and the second drug inlet.

3. The sewage treatment device according to claim 1, characterized in that: The flocculation system further comprises a motor and a shaft coupling. The motor is located at a side of the cover plate away from the tank body, and the motor is connected to the agitator via the shaft coupling.

4. The sewage treatment device according to claim 1, characterized in that: The material of the tank body and the isolation net includes corrosion-resistant stainless steel.

5. The sewage treatment device according to claim 1, characterized in that: The concentration of the polyacrylamide solution is not less than 500 mg / L and not more than 800 mg / L; The concentration of the polyferric sulfate solution is not less than 800 mg / L and not more than 1000 mg / L.

6. A method for treating sewage, characterized in that: The sewage treatment device according to any one of claims 1 to 5 comprises the following steps: The sewage to be treated is passed into the tank of the flocculation system; The organic flocculant solution and the inorganic flocculant solution stored in the drug delivery system are introduced into the tank; stirred, allowed to stand, and separated into a supernatant liquid and a lower turbid liquid; The supernatant is introduced into the electrolysis system for electrolysis to obtain a treated solution.

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