Electric flocculation treatment system for organic wastewater

Abstract

The invention discloses an electric flocculation treatment system for organic wastewater. The electric flocculation treatment system comprises a primary filtering mechanism, an electric flocculation treatment mechanism and a solid-liquid separation mechanism which are communicated in sequence, the primary filtering mechanism comprises a primary filtering tank and a grid filter arranged in the primary filtering tank; the electric flocculation treatment mechanism comprises an electric flocculation treatment tank, a starting partition plate and a tail partition plate are fixed in the electric flocculation treatment tank, and the interior of the electric flocculation treatment tank is sequentially divided into an electric flocculation starting input space, an electric flocculation main body space and an electric flocculation discharge space by the starting partition plate and the tail partition plate; a plurality of electric flocculation anode plates and electric flocculation cathode plates which are arranged in parallel are arranged in the electric flocculation main body space; the treatment system can quickly and efficiently remove various organic pollutants in the wastewater, has a good removal effect on aromatic hydrocarbon, aliphatic hydrocarbon, phenols and alcohols, can greatly reduce the chemical oxygen demand and biochemical oxygen demand of the wastewater, and achieves a relatively high removal rate, and the general COD removal rate can reach 95% or above.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and specifically to an electrocoagulation treatment system for organic wastewater. Background Art

[0002] Organic wastewater is wastewater mainly containing organic pollutants. Organic wastewater is likely to cause eutrophication of water quality and has relatively great harm. Organic wastewater generally refers to wastewater discharged from industries such as papermaking, leather, and food industries with a concentration above 2000 mg / L. In domestic sewage, food processing, and papermaking industrial wastewater, there are organic substances such as carbohydrates, proteins, oils and fats, and lignin. These substances exist in sewage in a suspended or dissolved state and can be decomposed through the biochemical action of microorganisms. Oxygen is consumed during the decomposition process, so it is called an oxygen-consuming pollutant. This kind of pollutant can reduce the dissolved oxygen in water and affect the growth of fish and other aquatic organisms. After the dissolved oxygen in water is exhausted, the organic matter undergoes anaerobic decomposition, producing unpleasant odors such as hydrogen sulfide, ammonia, and mercaptan, deteriorating the water quality. The components of organic matter in water bodies are very complex. The concentration of oxygen-consuming organic matter is usually expressed by the amount of oxygen consumed during the biochemical decomposition of oxygen-consuming substances in a unit volume of water.

[0003] The existing technologies for the treatment of organic wastewater still lack in terms of treatment efficiency and treatment effect, and need to be further improved and optimized. Summary of the Invention

[0004] The purpose of the present invention is to provide an electrocoagulation treatment system for organic wastewater, which can treat organic wastewater more efficiently.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An electrocoagulation treatment system for organic wastewater includes a primary filtration mechanism, an electrocoagulation treatment mechanism, and a solid-liquid separation mechanism that are connected in sequence and communicate with each other;

[0007] The primary filtration mechanism includes a primary filtration tank and a grid filter disposed in the primary filtration tank;

[0008] The electrocoagulation treatment mechanism includes an electrocoagulation treatment tank. In the electrocoagulation treatment tank, a starting partition and a tail partition are fixed. The starting partition and the tail partition sequentially divide the interior of the electrocoagulation treatment tank into an electrocoagulation starting input space, an electrocoagulation main body space, and an electrocoagulation discharge space;

[0009] In the electrocoagulation main body space, a plurality of electrocoagulation anode plates and electrocoagulation cathode plates are arranged in parallel;

[0010] The output end of the primary filtration tank is connected to the electrocoagulation starting input space through a filtration output pipe;

[0011] The solid-liquid separation mechanism includes a solid-liquid separation tank, in which multiple mutually parallel solid-liquid separation inclined plates are fixed.

[0012] At the output end of the solid-liquid separation tank, a clear liquid discharge pipe connected to its interior is fixed near the top position, and a sludge discharge pipe connected to its interior is fixed near the bottom position.

[0013] The electrocoagulation discharge space is connected to the interior of the solid-liquid separation tank through an electrocoagulation discharge pipe.

[0014] Preferably, a plate lifting mechanism is provided on the electrocoagulation treatment tank. The plate lifting mechanism includes a plate lifting fixed cylinder fixed outside the electrocoagulation treatment tank and opening upward. A plate lifting sliding cylinder is slidably connected in the plate lifting fixed cylinder. The top end of the plate lifting sliding cylinder is connected by a lifting fixed connecting rod to a horizontally arranged plate lifting support plate. The plate lifting support plate is above the electrocoagulation main space, and the upper ends of multiple electrocoagulation anode plates and electrocoagulation cathode plates are fixedly connected to the plate lifting support plate.

[0015] A plate lifting drive rod for driving the plate lifting sliding cylinder to move up and down is provided in the plate lifting fixed cylinder.

[0016] Note: The electrocoagulation anode plate and the electrocoagulation cathode plate are driven to rise by the plate lifting mechanism, which is convenient for cleaning the electrocoagulation anode plate and the electrocoagulation cathode plate. At the same time, the plate lifting mechanism can adjust the area of the electrocoagulation anode plate and the electrocoagulation cathode plate inserted into the wastewater, thereby adjusting the electrocoagulation treatment effect.

[0017] Preferably, a plate cleaning mechanism is provided on the electrocoagulation treatment tank. The plate cleaning mechanism includes a plate cleaning support groove provided at the top of the electrocoagulation treatment tank and opening upward. Multiple vertically extending plate cleaning delivery pipes are fixed in the plate cleaning support groove, and multiple plate cleaning nozzles connected to their interiors are fixed outside the plate cleaning delivery pipes.

[0018] A cleaning wastewater discharge pipe connected to its interior is fixed outside the plate cleaning support groove.

[0019] A horizontally arranged cleaning drive support plate is fixed on the outer wall of the electrocoagulation treatment tank. A cleaning drive support slide rail is fixed on the top of the cleaning drive support plate. A cleaning drive support slider is slidably connected to the cleaning drive support slide rail, and the plate cleaning support groove is fixedly connected to the top of the cleaning drive support slider.

[0020] Note: A delivery pump in the prior art is used to deliver cleaning liquid to each plate cleaning delivery pipe. The cleaning liquid sprays out from the plate cleaning nozzles to clean the surfaces of the electrocoagulation anode plate and the electrocoagulation cathode plate, avoiding the influence of pollutants attached to the surfaces of the electrocoagulation anode plate and the electrocoagulation cathode plate on the electrocoagulation effect.

[0021] Preferably, a jet stirring mechanism is provided on the starting partition plate. There are multiple input wastewater flow-through holes penetrating both sides of the starting partition plate. The jet stirring mechanism includes a jet stirring support ring fixed in the input wastewater flow-through holes. An inner spherical surface of the jet stirring support ring is fitted with a jet stirring support sphere. A jet pipe accommodation hole penetrating along its diameter is provided on the jet stirring support sphere, and a jet stirring conveying pipe is fixed in the jet pipe accommodation hole;

[0022] A jet stirring conveying pump is fixed at the bottom inside the electrocoagulation starting input space. The output end of the jet stirring conveying pump is connected to the jet stirring conveying pipe through a pipeline.

[0023] Note: Using the jet stirring mechanism to stir the organic wastewater in the electrocoagulation main space is beneficial to the full mixing of the organic wastewater and the flocculant generated by the electrodes. The wastewater is discharged into the electrocoagulation main space through the jet stirring conveying pipe at a relatively high speed, and the flow velocity difference is used to stir the organic wastewater in the electrocoagulation main space.

[0024] Preferably, a stirring adjustment driving rod for driving the jet stirring support sphere to rotate is fixed on the side wall of the starting partition plate. The outer rod end of the stirring adjustment driving rod is fixedly connected to the side wall of the starting partition plate in the form of a ball hinge, and the inner rod end of the stirring adjustment driving rod is fixedly connected to the outer side surface of the jet stirring support sphere in the form of a ball hinge.

[0025] Note: At the same time, the stirring adjustment driving rod can drive the jet stirring support sphere together with the jet stirring conveying pipe to rotate around the jet stirring support ring to adjust the orientation of the jet stirring conveying pipe.

[0026] Preferably, a flow guiding mechanism between plates is provided in the electrocoagulation treatment tank. The flow guiding mechanism between plates includes a flow guiding support shaft vertically extending between each electrocoagulation anode plate and electrocoagulation cathode plate in the electrocoagulation treatment tank, and flow guiding blades are fixed on the flow guiding support shaft;

[0027] A plurality of flow guiding adjustment accommodation shells are fixed at the bottom of the electrocoagulation treatment tank. The lower ends of multiple flow guiding support shafts extend into each flow guiding adjustment accommodation shell in one-to-one correspondence, and a flow guiding adjustment driving motor for driving the flow guiding support shaft to rotate is fixed in the flow guiding adjustment accommodation shell.

[0028] Note: Guiding the water flow flowing between the electrocoagulation anode plate and the electrocoagulation cathode plate is beneficial to the full mixing of the organic wastewater and the flocculant generated by the electrodes, and the flow guiding adjustment driving motor can drive the flow guiding support shaft together with the flow guiding blades to deflect to adjust the specific orientation of the flow guiding blades between plates.

[0029] Preferably, a microbubble generating mechanism is provided in the electrocoagulation treatment tank. The microbubble generating mechanism includes a microbubble delivery shell fixed to the bottom inside the electrocoagulation main space, and a plurality of microbubble nozzles fixed to the top of the microbubble delivery shell and communicating with its interior.

[0030] Note: Air is discharged from the microbubble nozzles in the form of microbubbles. The microbubbles move upward in the organic wastewater, and the microbubbles float the suspended particles adsorbed in the organic wastewater to the surface of the organic wastewater together, facilitating the unified cleaning and removal of the floating foam.

[0031] Preferably, a sludge cleaning mechanism is provided at the bottom inside the solid-liquid separation tank. The sludge cleaning mechanism includes a sludge cleaning semi-cylindrical shell arranged at the bottom inside the solid-liquid separation tank and extending horizontally, and a sludge cleaning scraper fixed to the lower side of the sludge cleaning semi-cylindrical shell;

[0032] A sludge cleaning support slide rail is fixed to the inner side wall of the solid-liquid separation tank and extends horizontally. A sludge cleaning support slider is slidably connected to the sludge cleaning support slide rail. A semi-cylindrical connecting plate is fixed to the sludge cleaning support slider, and a rotating shaft connecting hole is provided on the semi-cylindrical connecting plate. A semi-cylindrical support shaft is fixed to the end of the sludge cleaning semi-cylindrical shell, and the semi-cylindrical support shaft is rotatably fitted in the rotating shaft connecting hole.

[0033] Note: The floccules deposited at the bottom inside the solid-liquid separation tank form sludge. The sludge cleaning mechanism is used to clean the sludge deposited at the bottom inside the solid-liquid separation tank. The sludge cleaning semi-cylindrical shell can shovel up the sludge deposited at the bottom inside the solid-liquid separation tank, and the centrally shoveled sludge is discharged through the sludge discharge pipe.

[0034] Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

[0035] 1. The structure of the present invention is reasonably designed, and it can quickly and efficiently remove various organic pollutants in the wastewater. It has good removal effects on aromatic hydrocarbons, aliphatic hydrocarbons, phenols, and alcohols, can greatly reduce the chemical oxygen demand and biochemical oxygen demand of the wastewater, and achieve a high removal rate. Generally, the COD removal rate can reach more than 95%;

[0036] 2. The present invention is convenient to operate and has the ability of advanced treatment. It can not only remove conventional organic matters, but also deeply treat some refractory organic pollutants, convert them into biodegradable substances or directly mineralize them into carbon dioxide and water, reduce the toxicity of the wastewater, improve the biodegradability of the wastewater, and create good conditions for subsequent biological treatment and other processes;

[0037] 3. The present invention can remove suspended solids more thoroughly, can effectively remove the suspended solids in the wastewater, make the effluent water quality clear, and reduce the load of subsequent treatment units;

[0038] 4. The present invention can use the jet stirring mechanism to stir the organic wastewater in the main space of the electrocoagulation, which is conducive to the full mixing of the organic wastewater and the flocculant generated by the electrodes.

[0039] 5. The present invention can use the plate cleaning mechanism to clean the surfaces of the electrocoagulation anode plate and the electrocoagulation cathode plate in a timely manner, avoiding the influence of the pollutants attached to the surfaces of the electrocoagulation anode plate and the electrocoagulation cathode plate on the electrocoagulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is the front view of the present invention;

[0041] Figure 2 is the left view of the electrocoagulation treatment mechanism of the present invention;

[0042] Figure 3 is the structural schematic diagram of the jet stirring mechanism of the present invention;

[0043] Figure 4 is the left view of the microbubble generation mechanism of the present invention;

[0044] Figure 5 is the structural schematic diagram of the sludge cleaning mechanism of the present invention.

[0045] In the figure, 10 - primary filtration mechanism, 11 - primary filtration tank, 111 - filtration output pipe, 12 - grille filter, 20 - electrocoagulation treatment mechanism, 201 - electrocoagulation starting input space, 202 - electrocoagulation main body space, 203 - electrocoagulation discharge space, 211 - starting partition plate, 212 - tail partition plate, 2110 - input wastewater flow-through hole, 2120 - tail output flow-through hole, 213 - electrocoagulation discharge pipe, 22 - electrocoagulation anode plate, 23 - electrocoagulation cathode plate, 24 - electrode plate lifting mechanism, 241 - electrode plate lifting fixed cylinder, 242 - electrode plate lifting sliding cylinder, 243 - lifting fixed connecting rod, 244 - electrode plate lifting support plate, 245 - electrode plate lifting drive rod, 25 - electrode plate cleaning mechanism, 251 - electrode plate cleaning support groove, 252 - electrode plate cleaning delivery pipe, 253 - electrode plate cleaning nozzle, 254 - cleaning wastewater discharge pipe, 255 - cleaning drive support plate, 256 - cleaning drive support slide rail, 257 - cleaning drive support slider, 26 - jet stirring mechanism, 261 - jet stirring support ring, 262 - jet stirring support sphere, 2620 - jet pipe accommodation hole, 263 - jet stirring delivery pipe, 264 - jet stirring delivery pump, 265 - stirring adjustment drive rod, 27 - flow guiding mechanism between electrode plates, 271 - flow guiding support shaft between electrode plates, 272 - flow guiding blades between electrode plates, 273 - flow guiding adjustment accommodation shell, 274 - flow guiding adjustment drive motor, 28 - microbubble generation mechanism, 281 - microbubble delivery shell, 282 - microbubble nozzle, 30 - solid-liquid separation mechanism, 31 - solid-liquid separation tank, 311 - clear liquid discharge pipe, 312 - sludge discharge pipe, 32 - solid-liquid separation inclined plate, 33 - sludge cleaning mechanism, 331 - sludge cleaning semi-cylindrical shell, 332 - sludge cleaning scraper, 333 - sludge cleaning support slide rail, 334 - sludge cleaning support slider, 335 - semi-cylindrical connecting plate, 336 - semi-cylindrical support shaft. Detailed implementation mode

[0046] The following combines Figures 1 to 5 to elaborate on the present invention in detail. For the convenience of description, the orientations mentioned below are defined as follows: The up, down, left, right, front, and rear directions mentioned below are consistent with the up, down, left, right, front, and rear directions of the projection relationship of each main view or structural schematic diagram itself.

[0047] Embodiment 1: An electrocoagulation treatment system for organic wastewater, as Figure 1 shown, includes a primary filtration mechanism 10, an electrocoagulation treatment mechanism 20, and a solid-liquid separation mechanism 30 that are connected in sequence and communicate with each other;

[0048] The primary filtration mechanism 10 includes a primary filtration tank 11 and a grille filter 12 arranged in the primary filtration tank 11;

[0049] The grille filter 12 is a grille-type filter of the prior art;

[0050] The electrocoagulation treatment mechanism 20 includes an electrocoagulation treatment tank 21. Inside the electrocoagulation treatment tank 21, a starting partition plate 211 and a tail partition plate 212 are fixed. The starting partition plate 211 and the tail partition plate 212 sequentially divide the inside of the electrocoagulation treatment tank 21 into an electrocoagulation starting input space 201, an electrocoagulation main body space 202, and an electrocoagulation discharge space 203.

[0051] The tail partition plate 212 has a plurality of tail output flow-through holes 2120 penetrating both sides thereof.

[0052] Inside the electrocoagulation main body space 202, a plurality of electrocoagulation anode plates 22 and electrocoagulation cathode plates 23 are arranged in parallel.

[0053] A plurality of electrocoagulation anode plates 22 and a plurality of electrocoagulation cathode plates 23 are arranged at intervals and staggered.

[0054] The output end of the primary filtration tank 11 is connected to the electrocoagulation starting input space 201 through a filtration output pipe 111.

[0055] The solid-liquid separation mechanism 30 includes a solid-liquid separation tank 31. Inside the solid-liquid separation tank 31, a plurality of mutually parallel solid-liquid separation inclined plates 32 are fixed.

[0056] At a position near the top of the output end of the solid-liquid separation tank 31, a clear liquid discharge pipe 311 connected to the inside thereof is fixed. At a position near the bottom of the output end of the solid-liquid separation tank 31, a sludge discharge pipe 312 connected to the inside thereof is fixed.

[0057] The electrocoagulation discharge space 203 is connected to the inside of the solid-liquid separation tank 31 through an electrocoagulation discharge pipe 213.

[0058] As Figure 2 shown, on the electrocoagulation treatment tank 21, a plate lifting mechanism 24 is provided. The plate lifting mechanism 24 includes a plate lifting fixed cylinder 241 fixed outside the electrocoagulation treatment tank 21 and opening upward. Inside the plate lifting fixed cylinder 241, a plate lifting sliding cylinder 242 is slidably connected. The top end of the plate lifting sliding cylinder 242 is connected through a lifting fixed connecting rod 243 to a horizontally arranged plate lifting support plate 244. The plate lifting support plate 244 is above the electrocoagulation main body space 202. The upper ends of a plurality of electrocoagulation anode plates 22 and electrocoagulation cathode plates 23 are fixedly connected to the plate lifting support plate 244.

[0059] Inside the plate lifting fixed cylinder 241, a plate lifting driving rod 245 for driving the plate lifting sliding cylinder 242 to lift and move is provided. The plate lifting driving rod 245 is an electric control telescopic rod driven by a servo motor in the prior art. The outer rod end of the plate lifting driving rod 245 is fixedly connected to the inner bottom of the plate lifting fixed cylinder 241, and the inner rod end of the plate lifting driving rod 245 is fixedly connected to the inner top of the plate lifting sliding cylinder 242.

[0060] Example 2: On the basis of Example 1, as Figure 1 shown, a plate cleaning mechanism 25 is provided on the electrocoagulation treatment tank 21. The plate cleaning mechanism 25 includes a plate cleaning support groove 251 provided at the top of the electrocoagulation treatment tank 21 and opening upward. A plurality of vertically extending plate cleaning conveying pipes 252 are fixed in the plate cleaning support groove 251, and a plurality of plate cleaning nozzles 253 communicated with the inside thereof are fixed on the outer side of the plate cleaning conveying pipe 252;

[0061] A cleaning waste water discharge pipe 254 communicated with the inside thereof is fixed on the outer side of the plate cleaning support groove 251;

[0062] As Figure 2 shown, a horizontally arranged cleaning driving support plate 255 is fixed on the outer side wall of the electrocoagulation treatment tank 21. A cleaning driving support slide rail 256 is fixed on the top of the cleaning driving support plate 255. A cleaning driving support slider 257 is slidably connected to the cleaning driving support slide rail 256, and the plate cleaning support groove 251 is fixedly connected to the top of the cleaning driving support slider 257;

[0063] The cleaning driving support slider 257 is driven by a servo motor in the prior art through a gear-rack transmission to move along the direction of the cleaning driving support slide rail 256.

[0064] Example 3: On the basis of Example 2, as Figure 1 shown, a jet stirring mechanism 26 is provided on the starting partition plate 211. As Figure 3 shown, the starting partition plate 211 has a plurality of input waste water circulation holes 2110 penetrating through both sides thereof. The jet stirring mechanism 26 includes a jet stirring support ring 261 fixed in the input waste water circulation holes 2110. A jet stirring support sphere 262 is in spherical surface fit in the jet stirring support ring 261. The jet stirring support sphere 262 has a jet pipe accommodating hole 2620 penetrating along its diameter, and a jet stirring conveying pipe 263 is fixed in the jet pipe accommodating hole 2620;

[0065] A jet stirring conveying pump 264 is fixed at the bottom inside the electrocoagulation starting input space 201. The output end of the jet stirring conveying pump 264 is communicated with the jet stirring conveying pipe 263 through a pipeline.

[0066] The jet stirring conveying pump 264 is a liquid conveying pump in the prior art;

[0067] As Figure 3As shown, a stirring adjustment drive rod 265 for driving the rotation of the jet stirring support sphere 262 is fixed on the side wall of the starting partition plate 211. The stirring adjustment drive rod 265 is an electro-control telescopic rod driven by a servo motor in the prior art, and the stirring adjustment drive rod 265 has a waterproof function. The outer rod end of the stirring adjustment drive rod 265 is fixedly connected to the side wall of the starting partition plate 211 in the form of a ball hinge, and the inner rod end of the stirring adjustment drive rod 265 is fixedly connected to the outer side surface of the jet stirring support sphere 262 in the form of a ball hinge.

[0068] Example 4: On the basis of Example 3, as Figure 1 shown, a flow guiding mechanism 27 between electrode plates is provided in the electrocoagulation treatment tank 21. The flow guiding mechanism 27 between electrode plates includes a flow guiding support shaft 271 between each electrocoagulation anode plate 22 and electrocoagulation cathode plate 23 in the electrocoagulation treatment tank 21 and extending vertically. A flow guiding blade 272 is fixed on the flow guiding support shaft 271;

[0069] A plurality of flow guiding adjustment accommodation shells 273 are fixed at the bottom of the electrocoagulation treatment tank 21. The lower ends of the plurality of flow guiding support shafts 271 extend into the respective flow guiding adjustment accommodation shells 273 in a one-to-one correspondence. A flow guiding adjustment drive motor 274 for driving the rotation of the flow guiding support shaft 271 is fixed in the flow guiding adjustment accommodation shell 273. The flow guiding adjustment drive motor 274 is a servo motor in the prior art, and the output shaft of the flow guiding adjustment drive motor 274 is in transmission connection with the lower end of the flow guiding support shaft 271.

[0070] Example 5: On the basis of Example 4, as Figure 2 shown, a microbubble generating mechanism 28 is provided in the electrocoagulation treatment tank 21. The microbubble generating mechanism 28 includes a microbubble conveying shell 281 fixed at the bottom inside the electrocoagulation main space 202. A plurality of microbubble nozzles 282 connected to the inside thereof are fixed at the top of the microbubble conveying shell 281;

[0071] The microbubble conveying shell 281 is connected to an air conveyor in the prior art through a pipeline, and the air conveyor is used to convey air into the inside of the microbubble conveying shell 281.

[0072] Example 6: On the basis of Example 5, as Figure 1 shown, a sludge cleaning mechanism 33 is provided at the bottom inside the solid-liquid separation tank 31. As Figure 5 shown, the sludge cleaning mechanism 33 includes a sludge cleaning semi-cylindrical shell 331 provided at the bottom inside the solid-liquid separation tank 31 and extending horizontally. A sludge cleaning scraper 332 is fixed on the lower side of the sludge cleaning semi-cylindrical shell 331;

[0073] The sludge cleaning scraper 332 is a rubber scraper, which has a certain flexibility and can be bent to a certain extent during the rotation of the sludge cleaning semi-cylindrical shell 331;

[0074] A horizontally extending sludge cleaning support slide rail 333 is fixed to the inner side wall of the solid-liquid separation tank 31. A sludge cleaning support slider 334 is slidably connected to the sludge cleaning support slide rail 333. A half-cylinder connecting plate 335 is fixed to the sludge cleaning support slider 334. A rotating shaft connecting hole 3350 is provided on the half-cylinder connecting plate 335. A half-cylinder support shaft 336 is fixed to the end of the sludge cleaning half-cylinder shell 331. The half-cylinder support shaft 336 is rotationally fitted in the rotating shaft connecting hole 3350;

[0075] The sludge cleaning support slider 334 is driven by a servo motor of the prior art through a gear-rack drive to move along the sludge cleaning support slide rail 333;

[0076] The half-cylinder support shaft 336 is driven by a servo motor of the prior art fixed to the half-cylinder connecting plate 335 through a worm-gear drive to rotate around the axis of the rotating shaft connecting hole 3350.

[0077] In the actual application process of the present invention, first, the organic wastewater to be treated is input into the primary filtration tank 11; the grid filter 12 is used to filter the organic wastewater to remove large particle impurities and suspended matters in the organic wastewater;

[0078] The filtered organic wastewater is discharged from the filtration output pipe 111 and enters the electrocoagulation starting input space 201. The organic wastewater in the electrocoagulation starting input space 201 passes through the input wastewater flow-through hole 2110 and enters the electrocoagulation main space 202;

[0079] The electrocoagulation anode plate 22 and the electrocoagulation cathode plate 23 are respectively connected to the positive and negative poles of a DC power supply of the prior art. The electrocoagulation anode plate 22 is made of an iron plate, and the electrocoagulation cathode plate 23 is made of a titanium plate;

[0080] In the organic wastewater electrocoagulation treatment device, the anode plate and the cathode plate cause the pollutants in the organic wastewater to flocculate through the following changes:

[0081] The electrocoagulation anode plate 22 will undergo an oxidation reaction under the action of direct current, dissolving divalent iron ions. The dissolved metal ions will undergo hydrolysis and polymerization reactions in water. These hydrolysis products will undergo polymerization reactions to form a series of polynuclear hydroxy complexes;

[0082] At the same time, the electrocoagulation anode plate 22 also generates some substances with strong oxidizing properties. For example, in wastewater containing chloride ions, chlorine gas can be generated. The generated chlorine gas can further react with water to generate strong oxidants such as hypochlorous acid. These strong oxidants can oxidize some organic pollutants into low-molecular-weight organic substances, destroying the structure of the organic substances and making them more easily adsorbed and removed by the flocculant;

[0083] The surface of the electro-flocculation cathode plate 23 mainly undergoes a hydrogen evolution reaction, that is, hydrogen ions in the water obtain electrons to generate hydrogen. In this process, a local alkaline environment is formed near the cathode because the consumption of hydrogen ions causes a relative increase in the concentration of hydroxide ions.

[0084] The new ecological hydrogen produced by the electro-flocculation cathode plate 23 has a certain reducing ability and can react with the pollutants in the wastewater to change the structure and properties of the pollutants, and reduce the heavy metal ions in some heavy metal-containing organic matter to low-valent states or metal elements, thereby making it easier to precipitate or separate them from the water;

[0085] The hydrogen generated by the electro-flocculation cathode plate 23 is precipitated in the form of tiny bubbles. During the rising process, these tiny bubbles collide and adhere to organic pollutants and flocculants in the water to form a gas-solid or gas-liquid combination. Due to the buoyancy of the bubbles, the organic pollutants that were originally difficult to settle can float to the water surface with the bubbles and be separated from the water.

[0086] In general, the electro-flocculation anode plate 22 forms a flocculant and an oxidation effect by dissolving metal ions, and the electro-flocculation cathode plate 23 produces a flotation effect and a reduction effect by hydrogen evolution. The two work together to cause the pollutants in the organic wastewater to undergo condensation, adsorption, oxidation-reduction and other effects, and eventually form larger flocs. Subsequently, the flocs are separated from the wastewater by precipitation and flotation, thereby achieving the purpose of purifying the wastewater.

[0087] The organic wastewater treated by the electro-flocculation passes through the tail output flow hole 2120 and enters the electro-flocculation discharge space 203. The organic wastewater in the electro-flocculation discharge space 203 enters the solid-liquid separation tank 31 through the electro-flocculation discharge pipe 213. Under the separation effect of the multiple solid-liquid separation inclined plates 32, the supernatant of the organic wastewater is discharged through the clear liquid discharge pipe 311, and the floccules in the organic wastewater are deposited at the bottom of the solid-liquid separation tank 31 and discharged through the sludge discharge pipe 312.

[0088] During the electro-flocculation treatment process, the organic wastewater in the electro-flocculation main space 202 is stirred by the jet stirring mechanism 26, which is conducive to the full mixing of the organic wastewater and the flocculant produced by the electrode. The jet stirring delivery pump 264 is used to deliver part of the organic wastewater in the electro-flocculation starting input space 201 to the jet stirring delivery pipe 263, and then discharged to the electro-flocculation main space 202 at a higher speed through the jet stirring delivery pipe 263, and the organic wastewater in the electro-flocculation main space 202 is stirred by the flow velocity difference;

[0089] At the same time, the stirring adjustment driving rod 265 can drive the jet stirring support ball 262 together with the jet stirring delivery pipe 263 to rotate around the jet stirring support ring 261 to adjust the direction of the jet stirring delivery pipe 263;

[0090] Cooperating with the inter-electrode plate guide mechanism 27, the water flow passing through the electro-flocculation anode plate 22 and the electro-flocculation cathode plate 23 is guided, which is conducive to the full mixing of the organic wastewater and the flocculant produced by the electrode. The guide adjustment drive motor 274 can drive the inter-electrode plate guide support shaft 271 together with the inter-electrode plate guide blade 272 to deflect, so as to adjust the specific direction of the inter-electrode plate guide blade 272;

[0091] When the electro-flocculation anode plate 22 and the electro-flocculation cathode plate 23 need to be cleaned, the plate lifting mechanism 24 is used to drive the electro-flocculation anode plate 22 and the electro-flocculation cathode plate 23 to rise, the inner rod of the plate lifting driving rod 245 extends to drive the plate lifting sliding cylinder 242 to move upward, and the plate lifting sliding cylinder 242 drives the multiple electro-flocculation anode plates 22 and the electro-flocculation cathode plates 23 to move upward together through the lifting fixed connecting rod 243 and the plate lifting support plate 244;

[0092] Then, the cleaning drive support slider 257 is driven by the servo motor of the prior art through the gear rack transmission to move along the cleaning drive support slide rail 256. The cleaning drive support slide rail 256 is parallel to the plane of the electro-flocculation anode plate 22 and the electro-flocculation cathode plate 23. The cleaning drive support slider 257 drives the plate cleaning support groove 251 together with the plurality of plate cleaning delivery pipes 252 to move, so that the plate cleaning delivery pipes 252 enter the gap between the electro-flocculation anode plate 22 and the electro-flocculation cathode plate 23, and reciprocate along the cleaning drive support slide rail 256. The delivery pump of the prior art is used to deliver the cleaning liquid to each plate cleaning delivery pipe 252, and the cleaning liquid is sprayed from the plate cleaning nozzle 253 to clean the surface of the electro-flocculation anode plate 22 and the electro-flocculation cathode plate 23.

[0093] The cleaning wastewater generated by cleaning flows down along the surface of the electro-flocculation anode plate 22 and the electro-flocculation cathode plate 23 and enters the electrode cleaning support groove 251. The cleaning wastewater is finally discharged through the cleaning wastewater external discharge pipe 254.

[0094] After the electro-flocculation anode plate 22 and the electro-flocculation cathode plate 23 are cleaned, the inner rod of the plate lifting driving rod 245 is retracted, so that the multiple electro-flocculation anode plates 22 and the electro-flocculation cathode plates 23 are put back into the electro-flocculation main body space 202;

[0095] The microbubble transport shell 281 is connected to the air conveyor of the prior art through a pipeline, and the air conveyor is used to transport air into the microbubble transport shell 281. The air is discharged from the microbubble nozzle 282 in the form of microbubbles. The microbubbles move from bottom to top in the organic wastewater. The microbubbles will absorb the suspended particles in the organic wastewater and float to the surface of the organic wastewater. The top of the electric flocculation treatment tank 21 is provided with a conventional scum remover, and the scum on the surface of the organic wastewater can be removed by using the conventional scum remover.

[0096] The flocs deposited at the inner bottom of the solid-liquid separation tank 31 form sludge. The sludge cleaning mechanism 33 is used to clean the sludge deposited at the inner bottom of the solid-liquid separation tank 31. The sludge cleaning support slider 334 is driven by a servo motor of the prior art through a gear-rack drive to move along the sludge cleaning support slide rail 333. The sludge cleaning support slider 334 drives the sludge cleaning semi-cylindrical shell 331 to move horizontally at the inner bottom of the solid-liquid separation tank 31. The sludge is shoveled into the sludge cleaning semi-cylindrical shell 331 through the scraping action of the sludge cleaning scraper 332. When the sludge cleaning semi-cylindrical shell 331 moves to the sludge discharge pipe 312, the valve on the sludge discharge pipe 312 is opened, and the centrally shoveled sludge can be discharged through the sludge discharge pipe 312.

Claims

1. An organic wastewater electrocoagulation treatment system, characterized in that, It includes a primary filtration mechanism (10), an electrocoagulation treatment mechanism (20), and a solid-liquid separation mechanism (30) that are connected in sequence and communicate with each other; The primary filtration mechanism (10) includes a primary filtration tank (11) and a grille filter (12) provided in the primary filtration tank (11); The electrocoagulation treatment mechanism (20) includes an electrocoagulation treatment tank (21). In the electrocoagulation treatment tank (21), a starting partition plate (211) and a tail partition plate (212) are fixed. The starting partition plate (211) and the tail partition plate (212) sequentially divide the interior of the electrocoagulation treatment tank (21) into an electrocoagulation starting input space (201), an electrocoagulation main body space (202), and an electrocoagulation discharge space (203); In the electrocoagulation main body space (202), a plurality of electrocoagulation anode plates (22) and electrocoagulation cathode plates (23) are arranged in parallel; The output end of the primary filtration tank (11) is connected to the electrocoagulation starting input space (201) through a filtration output pipe (111); The solid-liquid separation mechanism (30) includes a solid-liquid separation tank (31). In the solid-liquid separation tank (31), a plurality of solid-liquid separation inclined plates (32) are fixed and arranged in parallel with each other; The output end of the solid-liquid separation tank (31) is fixed with a clear liquid discharge pipe (311) that communicates with its interior near the top position, and the output end of the solid-liquid separation tank (31) is fixed with a sludge discharge pipe (312) that communicates with its interior near the bottom position; The electrocoagulation discharge space (203) is connected to the interior of the solid-liquid separation tank (31) through an electrocoagulation discharge pipe (213).

2. The organic wastewater electrocoagulation treatment system according to claim 1, wherein On the electrocoagulation treatment tank (21), there is a plate lifting mechanism (24). The plate lifting mechanism (24) includes a plate lifting fixed cylinder (241) fixed outside the electrocoagulation treatment tank (21) and opening upward. A plate lifting sliding cylinder (242) is slidably connected in the plate lifting fixed cylinder (241). The top end of the plate lifting sliding cylinder (242) is connected to a horizontally arranged plate lifting support plate (244) through a lifting fixed connecting rod (243). The plate lifting support plate (244) is located above the electrocoagulation main body space (202). The upper ends of the plurality of electrocoagulation anode plates (22) and the electrocoagulation cathode plates (23) are fixedly connected to the plate lifting support plate (244); In the plate lifting fixed cylinder (241), there is a plate lifting driving rod (245) for driving the plate lifting sliding cylinder (242) to lift and move.

3. An organic wastewater electrocoagulation treatment system according to claim 1, characterized in that, On the electrocoagulation treatment tank (21), there is a plate cleaning mechanism (25). The plate cleaning mechanism (25) includes a plate cleaning support groove (251) provided at the top of the electrocoagulation treatment tank (21) and opening upward. A plurality of vertically extending plate cleaning conveying pipes (252) are fixed in the plate cleaning support groove (251). A plurality of plate cleaning nozzles (253) that communicate with the interior thereof are fixed outside the plate cleaning conveying pipes (252); A cleaning waste water discharge pipe (254) communicating with the inside is fixed outside the plate cleaning support groove (251). A horizontally arranged cleaning drive support plate (255) is fixed on the outer side wall of the electrocoagulation treatment tank (21). A cleaning drive support slide rail (256) is fixed on the top of the cleaning drive support plate (255). A cleaning drive support slider (257) is slidably connected to the cleaning drive support slide rail (256). The plate cleaning support groove (251) is fixedly connected to the top of the cleaning drive support slider (257).

4. An organic wastewater electrocoagulation treatment system according to claim 1, wherein, A jet stirring mechanism (26) is provided on the starting partition plate (211). The starting partition plate (211) has a plurality of input waste water flow through holes (2110) penetrating through both sides thereof. The jet stirring mechanism (26) includes a jet stirring support ring (261) fixed in the input waste water flow through hole (2110). A jet stirring support sphere (262) is in spherical surface fit with the inner side of the jet stirring support ring (261). A jet pipe accommodating hole (2620) penetrating along its diameter is provided on the jet stirring support sphere (262). A jet stirring conveying pipe (263) is fixed in the jet pipe accommodating hole (2620). A jet stirring conveying pump (264) is fixed at the inner bottom of the electrocoagulation starting input space (201). The output end of the jet stirring conveying pump (264) is communicated with the jet stirring conveying pipe (263) through a pipeline.

5. An organic wastewater electrocoagulation treatment system according to claim 4, characterized in that, A stirring adjustment drive rod (265) for driving the jet stirring support sphere (262) to rotate is fixed on the side wall of the starting partition plate (211). The outer rod end of the stirring adjustment drive rod (265) is fixedly connected to the side wall of the starting partition plate (211) in the form of a spherical hinge. The inner rod end of the stirring adjustment drive rod (265) is fixedly connected to the outer side surface of the jet stirring support sphere (262) in the form of a spherical hinge.

6. The organic wastewater electrocoagulation treatment system according to claim 1, wherein A plate - to - plate flow guiding mechanism (27) is provided in the electrocoagulation treatment tank (21). The plate - to - plate flow guiding mechanism (27) includes a plate - to - plate flow guiding support shaft (271) which is arranged between each electrocoagulation anode plate (22) and the electrocoagulation cathode plate (23) in the electrocoagulation treatment tank (21) and extends vertically. Plate - to - plate flow guiding vanes (272) are fixed on the plate - to - plate flow guiding support shaft (271). A plurality of flow guiding adjustment accommodating shells (273) are fixed at the bottom of the electrocoagulation treatment tank (21). The lower ends of the plurality of plate - to - plate flow guiding support shafts (271) respectively extend into the corresponding flow guiding adjustment accommodating shells (273). A flow guiding adjustment drive motor (274) for driving the plate - to - plate flow guiding support shaft (271) to rotate is fixed in the flow guiding adjustment accommodating shell (273).

7. An organic wastewater electrocoagulation treatment system according to claim 1, characterized in that, A micro - bubble generating mechanism (28) is provided in the electrocoagulation treatment tank (21). The micro - bubble generating mechanism (28) includes a micro - bubble conveying shell (281) fixed at the inner bottom of the electrocoagulation main body space (202). A plurality of micro - bubble nozzles (282) communicating with the inside are fixed on the top of the micro - bubble conveying shell (281).

8. An organic wastewater electrocoagulation treatment system according to claim 1, wherein A sludge cleaning mechanism (33) is provided at the inner bottom of the solid-liquid separation tank (31). The sludge cleaning mechanism (33) includes a sludge cleaning semi-cylindrical shell (331) which is arranged at the inner bottom of the solid-liquid separation tank (31) and extends horizontally. A sludge cleaning scraper (332) is fixed to the lower side of the sludge cleaning semi-cylindrical shell (331). A horizontally extending sludge cleaning support slide rail (333) is fixed to the inner side wall of the solid-liquid separation tank (31). A sludge cleaning support slider (334) is slidably connected to the sludge cleaning support slide rail (333). A semi-cylindrical connecting plate (335) is fixed to the sludge cleaning support slider (334). A shaft connection hole (3350) is formed in the semi-cylindrical connecting plate (335). A semi-cylindrical support shaft (336) is fixed to the end of the sludge cleaning semi-cylindrical shell (331). The semi-cylindrical support shaft (336) is rotatably fitted in the shaft connection hole (3350).

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