Continuous hydraulic cyclone clarifier

Abstract

The invention relates to the technical field of wastewater treatment, and discloses a continuous hydraulic cyclone clarifier which comprises a barrel, an inner barrel and an annular baffle, a flocculation chamber is formed between the annular baffle and the inner barrel, and a sludge discharge pipe is further arranged on the barrel; a sludge settling chamber and a clear water area are formed between the annular baffle and the side wall of the barrel, an overflow groove is further formed in the clear water area, a water outlet communicated with the overflow groove is formed in the barrel, and a filtering structure is arranged in the sludge settling chamber; the bottom end of the inner cylinder is connected with a water inlet pipe which is tangentially connected with the inner wall of the inner cylinder, and a jet flow included angle is formed between the water inlet pipe and the horizontal plane. Coagulation, coagulation, precipitation, filtration and other processes are integrated, the occupied area is reduced, and the wastewater treatment speed is increased; water flow rotates upwards along the inner wall when entering the inner cylinder, and the intensely rotating water flow can be uniformly and quickly mixed with the medicament, so that a good flocculation condition is provided; residual suspended matters and tiny colloids in the wastewater are removed under the action of the filtering structure, so that the wastewater clarification efficiency and the effluent standard are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a continuous hydrocyclone clarifier. Background Art

[0002] As my country attaches increasing importance to the construction of ecological civilization, the requirements for the treatment of domestic sewage, industrial wastewater and wastewater generated by various engineering construction projects are becoming increasingly stringent, and higher and higher requirements are put forward for the treatment rate of sewage and wastewater and the standards of sewage and wastewater after treatment. For example, during the construction of engineering projects, foundation pit excavation and mechanical equipment washing will generate construction wastewater. Construction wastewater is composed of precipitation, seepage and construction water. Its characteristics are small amount of wastewater, high content of sediment and suspended matter, high viscosity, and low recovery value of substances in wastewater.

[0003] Direct discharge of construction wastewater during the construction process will cause destruction of surrounding natural vegetation, massive land pollution, and serious damage to the ecological environment. At the same time, under natural conditions, construction wastewater is difficult to degrade naturally, and long-term shelving will cause the surrounding soil to become hardened and the land to become salinized. In order to ensure the safety of the environment and life and health, as well as the smooth progress of green construction, it is necessary to effectively treat high-turbidity construction wastewater.

[0004] The clarifier is a water treatment equipment that integrates coagulation and sedimentation, and is mainly used for the clarification of sewage and wastewater. As a form of sludge circulation clarifier, the hydraulic circulation clarifier can simultaneously realize the three processes of mixing, reaction and floc sedimentation and separation of coagulant and raw water; when the raw water lifted by the water pump passes through the nozzle at a high speed, negative pressure will be formed around the nozzle and throat of the water ejector, thereby sucking a large amount of surrounding return sludge into the throat and fully mixing it with the raw water. The raw water and the return sludge are fully contacted and coagulated, the adsorption effect between particles is strengthened, and the flocculation effect is more sufficient, thereby obtaining a better clarification effect. The traditional hydraulic circulation clarifier has the advantages of simple tank structure, no mechanical mixer and other equipment, simple and convenient construction and maintenance, etc., but there are also problems such as the inability to fully mix the reagents and raw water and the unstable treatment effect.

[0005] The existing clarification and sedimentation devices have high energy consumption, are prone to mechanical failure and have long maintenance cycles, and also have disadvantages such as low treatment efficiency, poor continuity, large footprint and limited application range. In terms of high efficiency, stability and economic rationality, they can no longer meet the treatment requirements of wastewater with high viscosity and high mud content. Summary of the invention

[0006] The purpose of the present invention is to provide a continuous hydrocyclone clarifier to solve the problems of low treatment efficiency, poor continuity, large floor space and failure to meet wastewater treatment requirements of clarification and sedimentation devices in the prior art.

[0007] In order to achieve the above-mentioned object, the present invention provides a continuous hydrocyclone clarifier, comprising a cylinder, an inner cylinder and an annular baffle are further arranged in the cylinder, the inner cylinder and the annular baffle are spaced from the inside to the outside along the radial direction of the cylinder, the space between the annular baffle and the inner cylinder forms a flocculation chamber, and a mud discharge pipe connected to the flocculation chamber is further arranged on the cylinder;

[0008] The bottom end of the annular baffle is connected to the side wall of the cylinder, and a sludge settling chamber and a clean water area are formed between the annular baffle and the side wall of the cylinder. The clean water area is located on the upper side of the sludge settling chamber. The clean water area is also arranged with an overflow trough connected to the side wall of the cylinder. The cylinder is provided with a water outlet connected to the overflow trough, and the sludge settling chamber is arranged with a filtering structure;

[0009] The bottom end of the inner cylinder is connected with a water inlet pipe, which is tangentially connected to the inner wall of the inner cylinder. There is a jet angle between the water inlet pipe and the horizontal plane, so that the incoming water enters the inner cylinder obliquely upward.

[0010] Preferably, the inner wall of the inner cylinder is also provided with a turbulent flow structure that collides with the water flow.

[0011] Preferably, the turbulent flow structure comprises a first thread and a second thread of opposite rotation directions, the first thread is connected to the water inlet pipe, and the first thread and the second thread are alternately arranged along the axial direction of the inner cylinder.

[0012] Preferably, the jet angle is in the range of 3-7°.

[0013] Preferably, the inner cylinder comprises a vertical section and an open section whose diameter gradually increases from bottom to top, the bottom end of the vertical section is connected to the water inlet pipe, the open section is located on the upper side of the vertical section, and the open section is connected to the flocculation chamber.

[0014] Preferably, the flocculation chamber is further provided with a V-shaped baffle, and a plurality of the V-shaped baffles are alternately arranged from top to bottom.

[0015] Preferably, the sludge settling chamber comprises an upper annular plate, an annular baffle and a lower annular plate which are arranged in parallel and spaced apart from each other, the annular baffle is located between the upper annular plate and the lower annular plate, the annular baffle is connected between the bottom end of the annular baffle and the inner wall of the cylinder, and the upper annular plate, the annular baffle and the lower annular plate are all provided with water holes;

[0016] The filtering structure comprises a honeycomb plate and a quartz sand filter layer, wherein the honeycomb plate is arranged between the annular partition plate and the lower annular plate, and the quartz sand filter layer is arranged between the annular partition plate and the upper annular plate.

[0017] Preferably, a plurality of honeycomb panels are arranged obliquely, and the angle between each honeycomb panel and the lower annular plate is 60°.

[0018] Preferably, a conical cylinder with a diameter gradually decreasing from top to bottom is arranged at the bottom of the flocculation chamber, the top end of the conical cylinder is connected to the inner wall of the cylinder body, and the bottom end is connected to the bottom wall of the cylinder body, a water storage chamber is formed between the conical cylinder and the inner wall of the cylinder body, a clean water pipe is connected between the overflow trough and the water storage chamber, and a water outlet pipe connected to the water storage chamber is also provided on the cylinder body.

[0019] Preferably, a mud suction disk is also arranged at the bottom of the conical cylinder, and the mud discharge pipe is connected to the mud suction disk.

[0020] Compared with the prior art, the continuous hydrocyclone clarifier of the embodiment of the present invention has the following beneficial effects: an inner cylinder and an annular baffle are arranged in the cylinder body, and the inner cylinder and the annular baffle are used to separate the flocculation chamber, the sludge settling chamber and the clear water area in the cylinder body, thereby integrating the processes of coagulation, condensation, sedimentation and filtration, reducing the floor space, and the wastewater can be continuously treated in the cylinder body with strong continuity, thereby accelerating the wastewater treatment speed; the water flows into the inner cylinder from the bottom end of the inner cylinder through the water inlet pipe, and because the water inlet pipe is tangentially connected to the inner wall of the inner cylinder, and there is a jet angle between the water inlet pipe and the horizontal plane, the water flows along the inner wall when entering the inner cylinder. It provides power for the water flow and speeds up the flow of water. The violently rotating water flow can be evenly and quickly mixed with the reagents, providing good flocculation conditions. After the wastewater is mixed with the reagents in the inner cylinder, it enters the flocculation chamber. In the flocculation chamber, flocs are generated under the interaction of molecular forces and collide and condense with each other to produce larger particles. The particles settle to the bottom in the flocculation chamber. At the same time, the water flows through the sludge settling chamber. The remaining suspended matter and micro-colloids in the wastewater are removed under the action of the filtering structure. The filtered clean water can be discharged from the outlet, which greatly improves the efficiency of wastewater clarification and the effluent standard and meets the wastewater treatment requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the continuous hydrocyclone clarifier of the present invention;

[0022] Figure 2 yes Figure 1 A top view of a continuous hydrocyclone clarifier;

[0023] Figure 3 It is a schematic diagram of the assembly of the water inlet pipe and the inner cylinder of the continuous hydrocyclone clarifier of the present invention;

[0024] Figure 4 yes Figure 3 A top view of the assembly of the water inlet pipe and the inner cylinder;

[0025] Figure 5It is a schematic diagram of the internal structure of the inner cylinder of the continuous hydrocyclone clarifier of the present invention;

[0026] Figure 6 It is a schematic diagram of the assembly of the mud discharge pipe and the mud suction plate of the continuous hydrocyclone clarifier of the present invention.

[0027] In the figure, 1-water inlet pipe, 2-inner cylinder, 3-open section, 4-flocculation chamber, 5-overflow trough, 6-quartz sand filter layer, 7-honeycomb plate, 8-sludge settling chamber, 9-lower annular plate, 10-upper annular plate, 11-clean water pipe, 12-water outlet, 13-V-shaped baffle, 14-conical cylinder, 15-water outlet pipe, 16-water storage chamber, 17-mud discharge pipe, 18-cylinder body, 19-annular baffle, 20-water hole, 21-annular partition, 22-mud suction plate, 23-first thread, 24-second thread. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] A preferred embodiment of a continuous hydrocyclone clarifier of the present invention is as follows Figures 1 to 6 As shown, the continuous hydrocyclone clarifier includes a cylinder 18, an inner cylinder 2 and an annular baffle 19. The cylinder 18 is a cylindrical structure. The inner cylinder 2 and the annular baffle 19 are arranged inside the cylinder 18, and the inner cylinder 2 and the annular baffle 19 are spaced from the inside to the outside along the radial direction of the cylinder 18, and the inner cylinder 2, the annular baffle 19 and the cylinder 18 are arranged coaxially.

[0030] The space between the annular baffle 19 and the inner cylinder 2 forms a flocculation chamber 4, which is used for wastewater to flocculate and settle therein. The volume of the flocculation chamber 4 is larger than that of the inner cylinder 2. After the wastewater enters the flocculation chamber 4 from the inner cylinder 2, the flow rate decreases. The dispersed particles and suspended colloids in the wastewater form flocs under the interaction of molecular forces and collide and condense with each other, generating particles in the flocculation chamber 4 and settling at the bottom of the flocculation chamber 4. The cylinder 18 is also provided with a sludge discharge pipe 17 connected to the bottom of the flocculation chamber 4. After the granular sludge settles at the bottom of the flocculation chamber 4, it can be discharged through the sludge discharge pipe 17.

[0031] The bottom end of the annular baffle 19 is connected to the side wall of the cylinder 18, and the annular baffle 19 and the side wall of the cylinder 18 form a sludge settling chamber 8 and a clean water area. The sludge settling chamber 8 is connected to the clean water area and the flocculation chamber 4, and the clean water area is located on the upper side of the sludge settling chamber 8. After the wastewater settles in the flocculation chamber 4, the granular sludge settles to the bottom of the flocculation chamber 4 under the action of gravity, and the water flows into the sludge settling chamber 8 from the bottom of the sludge settling chamber 8, and then flows to the clean water area.

[0032] A filtering structure is arranged in the sludge settling chamber 8. When the water flows through the sludge settling chamber 8, the filtering structure can separate the remaining floccules in the wastewater and intercept the suspended colloids, ensuring the removal of the remaining suspended matter in the wastewater after the cyclone sedimentation, and improving the water discharge standard. The clean water area is arranged with an overflow trough 5 connected to the side wall of the cylinder 18, and the cylinder 18 is also provided with a water outlet 12 that communicates with the overflow trough 5. The clean water filtered by the filtering structure of the sludge settling chamber 8 enters the clean water area, and when the water volume in the clean water area reaches the height of the overflow trough 5, it can be discharged in time through the water outlet 12.

[0033] The bottom end of the inner tube 2 is also connected to a water inlet pipe 1, through which wastewater can enter the inner tube 2 and mix with the reagent in the inner tube 2 for coagulation. The water inlet pipe 1 is tangentially connected to the inner wall of the inner tube 2, and when the water flows into the inner tube 2, it can flow along the inner wall of the inner tube 2. The resistance at the connection between the water inlet pipe 1 and the inner tube 2 is small, and the speed of the water flow can be guaranteed. In this embodiment, there are two groups of water inlet pipes 1, and the two groups of water inlet pipes 1 are symmetrically distributed around the central axis of the inner tube 2.

[0034] There is a jet angle between the water inlet pipe 1 and the horizontal plane. The water inlet pipe 1 is tangent to the inner wall of the inner tube 2 in an inclined upward direction, so that the incoming water can enter the inner tube 2 in an inclined upward direction, forming an upward vortex in the inner tube 2, providing jet power for the wastewater to rotate upward along the inner tube 2, ensuring the speed of the water flow, and the violently rotating water flow can be evenly and quickly mixed with the reagent, providing good flocculation conditions.

[0035] The continuous hydrocyclone clarifier arranges an inner cylinder 2 and an annular baffle 19 in a cylinder 18, and utilizes the inner cylinder 2 and the annular baffle 19 to separate the cylinder 18 into a flocculation chamber 4, a sludge settling chamber 8 and a clear water area, thereby integrating processes such as coagulation, condensation, sedimentation and filtration, reducing the floor space, and allowing wastewater to be continuously treated in the cylinder 18 with strong continuity, thereby accelerating the wastewater treatment speed; water flows into the inner cylinder 2 from the bottom end of the inner cylinder 2 through the water inlet pipe 1, and since the water inlet pipe 1 is tangentially connected to the inner wall of the inner cylinder 2, and there is a jet angle between the water inlet pipe 1 and the horizontal plane, when the water flows into the inner cylinder 2, it rotates upward along the inner wall, and the water flows into the inner cylinder 2. The flow provides power to accelerate the flow speed of the water flow. The violently rotating water flow can be evenly and quickly mixed with the reagent, providing good flocculation conditions; the wastewater is mixed with the reagent in the inner cylinder 2 and enters the flocculation chamber 4. Flocs are generated under the interaction of molecular forces in the flocculation chamber 4 and collide and condense with each other to produce larger particles. The particles are precipitated to the bottom in the flocculation chamber 4. At the same time, the water flows through the sludge sedimentation chamber 8. The remaining suspended matter and micro-colloids in the wastewater are removed under the action of the filtering structure. The filtered clean water can be discharged from the outlet 12, which greatly improves the efficiency of wastewater clarification and the effluent standard, and meets the wastewater treatment requirements.

[0036] Preferably, the inner wall of the inner cylinder 2 is also provided with a turbulent flow structure that collides with the water flow.

[0037] The water flow can collide with the turbulent structure during the process of rotating and rising in the inner tube 2, generating turbulence while ensuring the flow rate. The turbulence can achieve the effect of rapid mixing with the reagent, so that the reagent and wastewater can fully contact and react, strengthen the contact and adsorption between solid particles in the water, and form good flocculation.

[0038] Preferably, the turbulent flow structure includes a first thread 23 and a second thread 24 with opposite rotation directions, the first thread 23 is connected to the water inlet pipe 1 , and the first thread 23 and the second thread 24 are alternately arranged along the axial direction of the inner tube 2 .

[0039] The turbulent structure is formed by the first thread 23 and the second thread 24. The first thread 23 is connected to the water inlet pipe 1, and the rotation direction of the first thread 23 can be matched with the jet angle. When the water enters the first thread 23, it rotates rapidly under the action of the thread structure, and generates turbulence under the action of the second thread 24, so that the agent and the wastewater can fully contact and react. The first thread 23 and the second thread 24 can be directly formed in the inner tube 2 through the drilling structure, which can not only accelerate and turbulent the wastewater, but also simplify the processing method of the turbulent structure.

[0040] Preferably, the jet angle is in the range of 3-7°.

[0041] The jet angle is used to provide power for the upward flow of wastewater. However, if the jet angle is too large, the water flow time in the inner tube 2 will be too short, and the mixing time of wastewater and reagent will be reduced. If the jet angle is too small, the flow resistance will be increased. The jet angle range of 3-7° can take into account the flow speed and the mixing time with the reagent, strengthen the adsorption between solid particles in the water, and form good flocculation. In this embodiment, the jet angle is 5°.

[0042] Preferably, the inner tube 2 includes a vertical section and an open section 3 whose diameter gradually increases from bottom to top, the bottom end of the vertical section is connected to the water inlet pipe 1, the open section 3 is located on the upper side of the vertical section, and the open section 3 is connected to the flocculation chamber 4.

[0043] The inner cylinder 2 is formed by the vertical section at the lower side and the open section 3 at the upper side. The water flow is quickly mixed with the reagent in the vertical section. When the water flow enters the open section 3, the diameter of the open section 3 gradually increases from bottom to top, and the water flow speed decreases. The reagent and the suspended matter in the wastewater are fully contacted in the open section 3, and driven by the rotating water flow in the vertical section, good flocculation conditions are provided for fine and viscous sediments. The sediments can be flocculated in the open section 3 first, and cooperate with the subsequent flocculation chamber 4 to form two flocculations, which enhances the flocculation effect and shortens the flocculation time. Floccules are generated under the interaction of molecular forces and collide and condense with each other, rapidly increasing the size and quality of the floccules.

[0044] Preferably, the flocculation chamber 4 is further provided with a V-shaped baffle 13, and a plurality of V-shaped baffles 13 are alternately arranged from top to bottom.

[0045] A V-shaped baffle 13 is arranged in the flocculation chamber 4. After the wastewater enters the flocculation chamber 4, the flow velocity is further slowed down. Under the action of the V-shaped baffle 13, the flow pattern of the water flow changes, so that the water flow forms a vortex flow on the plate surface and forms a faster flow velocity area. The particle flocs settle faster in this area, increasing the chance of particle sedimentation, thereby effectively accelerating the rapid precipitation of larger particle flocs, and the particle flocs in the water slide along the V-shaped baffle 13 to the bottom of the flocculation chamber 4 in a shorter time, shortening the sedimentation time of larger particles.

[0046] Preferably, the sludge settling chamber 8 comprises an upper annular plate 10, an annular baffle 21 and a lower annular plate 9 which are arranged in parallel and spaced apart from each other, the annular baffle 21 is located between the upper annular plate 10 and the lower annular plate 9, the annular baffle 21 is connected between the bottom end of the annular baffle 19 and the inner wall of the cylinder 18, and the upper annular plate 10, the annular baffle 21 and the lower annular plate 9 are all provided with water holes 20;

[0047] The filtering structure includes a honeycomb plate 7 and a quartz sand filter layer 6 . The honeycomb plate 7 is arranged between the annular partition plate 21 and the lower annular plate 9 , and the quartz sand filter layer 6 is arranged between the annular partition plate 21 and the upper annular plate 10 .

[0048] The upper annular plate 10, the annular partition 21 and the lower annular plate 9 divide the sludge settling chamber 8 into two separate spaces, which respectively accommodate the honeycomb plate 7 and the quartz sand filter layer 6. The water hole 20 can connect the sludge settling chamber 8, and the water supply flows in and out of the sludge settling chamber 8 to the clean water area. The honeycomb plate 7 and the quartz sand filter layer 6 filter and remove impurities from the wastewater to ensure that the micro colloids after precipitation and clarification are further retained. The honeycomb plate 7 and the quartz sand filter layer 6 form a filtering structure, which can absorb and filter out the micro suspended colloids and the remaining floccules in the wastewater, and have a good impurity removal effect on water purification.

[0049] In this embodiment, the depth of the quartz sand filter layer 6 is between 5-10 cm, ensuring that there is enough medium for filtering water quality and maintaining a high flow rate, ensuring water treatment efficiency, and reducing pressure loss and operating costs. The sand particle size is generally between 0.3-1.2 mm. The sand particles within this range provide a larger specific surface area, which is more conducive to adsorbing and intercepting impurities such as suspended matter, colloids, microorganisms, etc. in the water, has good filtering performance, and reduces the risk of clogging.

[0050] Preferably, a plurality of honeycomb panels 7 are arranged obliquely, and the angle between each honeycomb panel 7 and the lower annular panel 9 is 60°.

[0051] When the water flows through the lower annular plate 9 and the honeycomb plate 7, since the honeycomb plate 7 is arranged at 60 degrees, the water flow can form strong rotation and turbulence on the plate, ensuring that the water flow forms a uniform flow rate and flow pattern in the sludge settling chamber 8. The rotation and turbulence can help the residual flocculants to be completely precipitated to the bottom, which can improve the flow effect of the water flow in the sludge settling chamber 8 and the removal efficiency of the flocculants, thereby further purifying the water quality.

[0052] Choosing other angles will affect the rotation and turbulence of the water flow, reducing the sedimentation and removal efficiency of flocs. If the angle is higher than 60°, the rotation and turbulence of the water flow will be reduced, resulting in the inability to fully precipitate the flocs; if the angle is lower than 60°, the resistance of the water flow will increase and the work efficiency will be reduced. Therefore, choosing a 60° angle can improve the removal efficiency of flocs while ensuring the rotation and turbulence of the water flow.

[0053] Preferably, a conical cylinder 14 with a diameter gradually decreasing from top to bottom is also arranged at the bottom of the flocculation chamber 4, the top of the conical cylinder 14 is connected to the inner wall of the cylinder body 18, and the bottom end is connected to the bottom wall of the cylinder body 18, and a water storage chamber 16 is formed between the conical cylinder 14 and the inner wall of the cylinder body 18, a clean water pipe 11 is connected between the overflow trough 5 and the water storage chamber 16, and a water outlet pipe 15 connected to the water storage chamber 16 is also provided on the cylinder body 18.

[0054] A water storage chamber 16 is formed between the conical cylinder 14 and the inner wall of the cylinder body 18, and the water storage chamber 16 is connected to the overflow tank 5 through the clean water pipe 11. When the clean water enters the overflow tank 5, part of the wastewater is discharged from the cylinder body 18 through the water outlet 12 on the cylinder body 18, and part of the wastewater enters the water storage chamber 16 through the connecting pipe for balancing the cylinder body 18, thereby completing the entire wastewater clarification process.

[0055] The diameter of the conical cylinder 14 gradually decreases from top to bottom, and a mud collecting groove is formed inside the conical cylinder 14. The inner wall of the conical cylinder 14 has a guiding effect on the sedimentation of the sludge, ensuring that the sludge slides along the inner wall into the mud collecting groove. In addition, the design of small bottom and large top effectively increases the circumferential radius of the bottom of the water storage chamber 16, thereby increasing the volume of the water storage chamber 16, improving the volume utilization rate, and ensuring the balance of the cyclone cylinder 18.

[0056] In this embodiment, the ratio of the radius of the two circumferences of the tapered tube 14, which is smaller at the bottom and larger at the top, is 1:1.6, and the angle between the hypotenuse and the bottom is 60°.

[0057] Preferably, a mud suction disk 22 is further arranged at the bottom of the conical cylinder 14 , and the mud discharge pipe 17 is connected to the mud suction disk 22 .

[0058] The sludge suction plate 22 is an annular structure, and can collect the settled sludge and discharge the sludge through the sludge discharge pipe 17, thereby speeding up the sludge discharge process.

[0059] The working process of the present invention is:

[0060] First, the wastewater is injected into the inner tube 2 from the water inlet pipe 1 through the submersible sewage pump, and the reagent and the wastewater are kept in synchronous water inlet. The wastewater forms a vortex flow in the inner tube 2 at an angle of 5° upward along the tangential direction from the bottom of the inner tube 2, and is pushed by the water flow to form a turbulent state due to the friction of the alternating directions of the first thread 23 and the second thread 24, thereby increasing the full contact between the reagent and the wastewater, so that the wastewater and the reagent are fully mixed, thereby strengthening the contact and adsorption between the solid particles in the water, and then making the suspended matter in the wastewater and the reagent fully mixed, and improving the reaction efficiency of the reagent; in this process, the rising speed of the water flow in the inner tube 2 is ensured to be 6-10mm / s, forming an appropriate turbulent state, increasing the effect of the wastewater and the spiral wall, promoting the flocculation effect, and increasing the formation rate of flocculants, so that the suspended matter in the wastewater quickly condenses to form large-sized floccules, ensuring full mixing and contact effects, and avoiding the situation where the rapid rise of the wastewater causes uneven mixing.

[0061] Subsequently, the wastewater enters the open section 3 of the inner tube 2, where the flow rate slows down, forming larger flocs, and then enters the flocculation chamber 4, contacts the V-shaped baffle 13, shortens the sedimentation time of the sludge, and slides along the inclined plate to the sludge collecting tank of the conical tube 14 at the bottom.

[0062] After most of the flocculants settle, the wastewater enters the sludge settling chamber 8 through the water holes 20 of the lower annular baffle 19 and contacts the honeycomb plate 7. The honeycomb plate 7 precipitates and separates the fine suspended particles and slides them into the annular sludge collecting tank, ensuring that the effluent of the sludge settling chamber 8 completely separates the sludge, and then intercepts the remaining suspended colloids in the wastewater through the quartz sand filter layer 6, and flows into the clear water area through the water holes 20 of the upper annular plate 10. After the produced water in the clear water area reaches a certain height, it enters the overflow tank 5, and part of the produced water is discharged from the cylinder 18 through the water outlet 12, and the other part enters the water storage chamber 16 through the connecting pipe to balance the cylinder 18, completing the clarification process of the entire high turbidity mud wastewater.

[0063] The hydraulic retention time of wastewater in the continuous hydrocyclone clarifier is maintained at 30-45 minutes, that is, the total time from the wastewater entering the hydrocyclone to the completion of flocculation, sedimentation, clarification and other processes until the effluent is discharged is 30-45 minutes. The hydraulic retention time during this period is highly adaptable to changes in water volume and water quality, ensuring that the wastewater has enough time to fully mix and react with the flocculant during the coagulation and sedimentation process, so that the flocculants can be effectively precipitated and form a good precipitation effect. While ensuring the flocculation process, the alum consumption rate is low, the purification efficiency is high, and the operation and management are convenient.

[0064] In summary, the embodiment of the present invention provides a continuous hydrocyclone clarifier, in which an inner cylinder and an annular baffle are arranged in the cylinder body, and the inner cylinder and the annular baffle are used to separate the flocculation chamber, the sludge settling chamber and the clear water area in the cylinder body, thereby integrating the processes of coagulation, condensation, sedimentation and filtration, reducing the floor space, and the wastewater can be continuously treated in the cylinder body, with strong continuity, and the wastewater treatment speed is accelerated; the water flows into the inner cylinder from the bottom end of the inner cylinder through the water inlet pipe, and because the water inlet pipe is tangentially connected to the inner wall of the inner cylinder, and there is a jet angle between the water inlet pipe and the horizontal plane, the water flows upward along the inner wall when entering the inner cylinder, and the water flows upward along the inner wall ... The flow provides power to speed up the flow of water. The violently rotating water flow can be evenly and quickly mixed with the reagents, providing good flocculation conditions. After the wastewater is mixed with the reagents in the inner cylinder, it enters the flocculation chamber. In the flocculation chamber, flocs are generated under the interaction of molecular forces and collide and condense with each other to produce larger particles. The particles settle to the bottom in the flocculation chamber. At the same time, the water flows through the sludge sedimentation chamber. The remaining suspended matter and micro-colloids in the wastewater are removed under the action of the filtering structure. The filtered clean water can be discharged from the outlet, which greatly improves the efficiency of wastewater clarification and the effluent standard and meets the wastewater treatment requirements.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A continuous hydrocyclone clarifier, characterized in that: The invention comprises a cylinder (18), wherein an inner cylinder (2) and an annular baffle (19) are arranged inside the cylinder (18), wherein the inner cylinder (2) and the annular baffle (19) are arranged spaced apart from the inside to the outside along the radial direction of the cylinder (18), and a flocculation chamber (4) is formed in the space between the annular baffle (19) and the inner cylinder (2), and a mud discharge pipe (17) communicating with the flocculation chamber (4) is also arranged on the cylinder (18); The bottom end of the annular baffle (19) is connected to the side wall of the cylinder (18), and a sludge settling chamber (8) and a clean water area are formed between the annular baffle (19) and the side wall of the cylinder (18). The clean water area is located on the upper side of the sludge settling chamber (8). The clean water area is also provided with an overflow trough (5) connected to the side wall of the cylinder (18). The cylinder (18) is provided with a water outlet (12) connected to the overflow trough (5), and the sludge settling chamber (8) is provided with a filtering structure. The bottom end of the inner cylinder (2) is connected to a water inlet pipe (1), the water inlet pipe (1) is tangentially connected to the inner wall of the inner cylinder (2), and a jet angle is formed between the water inlet pipe (1) and the horizontal plane so that the incoming water enters the inner cylinder (2) obliquely upward.

2. The continuous hydrocyclone clarifier according to claim 1, characterized in that: The inner wall of the inner cylinder (2) is also provided with a turbulent flow structure that collides with the water flow.

3. The continuous hydrocyclone clarifier according to claim 2, characterized in that: The turbulent flow structure comprises a first thread (23) and a second thread (24) of opposite rotation directions, the first thread (23) is connected to the water inlet pipe (1), and the first thread (23) and the second thread (24) are alternately arranged along the axial direction of the inner tube (2).

4. The continuous hydrocyclone clarifier according to any one of claims 1 to 3, characterized in that: The range of the jet angle is 3-7°.

5. The continuous hydrocyclone clarifier according to any one of claims 1 to 3, characterized in that: The inner cylinder (2) comprises a vertical section and an open section (3) whose diameter gradually increases from bottom to top, the bottom end of the vertical section is connected to the water inlet pipe (1), the open section (3) is located on the upper side of the vertical section, and the open section (3) is connected to the flocculation chamber (4).

6. The continuous hydrocyclone clarifier according to any one of claims 1 to 3, characterized in that: The flocculation chamber (4) is further provided with a V-shaped baffle (13), and a plurality of the V-shaped baffles (13) are arranged alternately from top to bottom.

7. The continuous hydrocyclone clarifier according to any one of claims 1 to 3, characterized in that: The sludge settling chamber (8) comprises an upper annular plate (10), an annular baffle (21) and a lower annular plate (9) which are arranged in parallel and spaced apart from each other, the annular baffle (21) being located between the upper annular plate (10) and the lower annular plate (9), the annular baffle (21) being connected between the bottom end of the annular baffle (19) and the inner wall of the cylinder (18), and the upper annular plate (10), the annular baffle (21) and the lower annular plate (9) are all provided with water holes (20); The filtering structure comprises a honeycomb plate (7) and a quartz sand filter layer (6); the honeycomb plate (7) is arranged between the annular partition plate (21) and the lower annular plate (9); and the quartz sand filter layer (6) is arranged between the annular partition plate (21) and the upper annular plate (10).

8. The continuous hydrocyclone clarifier according to claim 7, characterized in that: A plurality of honeycomb panels (7) are arranged obliquely, and the angle between each honeycomb panel (7) and the lower annular panel (9) is 60°.

9. The continuous hydrocyclone clarifier according to any one of claims 1 to 3, characterized in that: A conical cylinder (14) with a diameter gradually decreasing from top to bottom is also arranged at the bottom of the flocculation chamber (4); the top end of the conical cylinder (14) is connected to the inner wall of the cylinder body (18), and the bottom end is connected to the bottom wall of the cylinder body (18); a water storage chamber (16) is formed between the conical cylinder (14) and the inner wall of the cylinder body (18); a clean water pipe (11) is connected between the overflow trough (5) and the water storage chamber (16); and a water outlet pipe (15) communicating with the water storage chamber (16) is also provided on the cylinder body (18).

10. The continuous hydrocyclone clarifier according to any one of claims 1 to 3, characterized in that: A mud suction plate (22) is also arranged at the bottom of the conical cylinder (14), and the mud discharge pipe (17) is connected to the mud suction plate (22).

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