A circulating mixed energy-saving and environmentally friendly sewage treatment equipment

Abstract

The present invention discloses a circulating hybrid energy-saving and environmentally friendly sewage treatment equipment, comprising a housing internally divided into a liquid receiving chamber, a first filter chamber, a second filter chamber, and a sedimentation chamber according to functions, wherein: the liquid receiving chamber forms a receiving area and a pumping area interconnected with each other through a first isolation plate group, and the top of the first isolation plate group maintains a predetermined distance from the liquid receiving chamber; the equipment also comprises a circulating pump pipe group, which is used to discharge liquid near the bottom of the pumping area into a RO membrane filtration module provided in the first filter chamber; and a stirring blade driven to rotate by a motor is provided in the second filter chamber. The circulating hybrid energy-saving and environmentally friendly sewage treatment equipment provided by the invention treats sewage through the liquid receiving chamber, the first filter chamber, the second filter chamber, and the sedimentation chamber, and optimizes the filtration and particle accumulation and retention effects by the liquid receiving chamber, the second filter chamber, and the RO membrane filtration module, thereby optimizing the sewage treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a circulating mixing type energy-saving and environment-friendly sewage treatment equipment. Background Art

[0002] Sewage treatment is generally divided into the following parts:

[0003] Pre-treatment unit: responsible for removing large particles of impurities and sediments in sewage. Common pre-treatment units include screens, grit chambers, sedimentation tanks, etc.

[0004] Activated sludge aeration unit: uses aeration technology to promote the degradation of organic matter by supplying oxygen to microorganisms in sewage, so that organic matter in sewage can be effectively removed;

[0005] Sedimentation tank: The mixed liquid in the aeration unit is retained in the sedimentation tank to allow the suspended matter in the sewage to settle and form sludge;

[0006] Sludge treatment unit: Treats the sludge settled in the sedimentation tank. Common treatment methods include concentration, digestion, dehydration, etc. to reduce the volume of sludge;

[0007] Circulation device: Circulates the activated sludge generated during sewage treatment back to the aeration unit to improve treatment efficiency.

[0008] In conjunction with the disclosure (announcement) number: CN116712897A, the disclosure (announcement) date: 2023-09-08, a circulating mixing type energy-saving and environmentally friendly sewage treatment equipment is disclosed, including a treatment tank, an irregular rounded edge type vortex-induced eccentric mixing mechanism and an opposite-sex attraction type premixed liquid device. The present invention belongs to the field of sewage treatment technology, specifically a circulating mixing type energy-saving and environmentally friendly sewage treatment equipment. According to the situation that the mixing effect is poor when the existing sewage and liquid medicine are mixed, the method of combining opposite-sex charge attraction and irregular rounded edge type vortex-induced stirring and mixing is adopted. By setting an irregular rounded edge type vortex-induced eccentric mixing mechanism and an opposite-sex attraction type premixed liquid device, multiple technical effects of eccentric rotation mixing and shaking vortex mixing of sewage and liquid medicine are achieved, further improving the environmentally friendly treatment quality of sewage.

[0009] In the prior art including the above patents, the above is carried out by stirring, and the liquid medicine is mixed so that the liquid medicine and sewage are mixed and separated. In fact, flocculation is only a link in sewage treatment and does not belong to the complete sewage treatment process. Summary of the Invention

[0010] The purpose of the present invention is to provide a circulating mixed energy-saving and environmentally friendly sewage treatment equipment to solve the above problems.

[0011] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a circulating hybrid energy-saving and environmentally friendly sewage treatment equipment, comprising a box body divided into a liquid receiving chamber, a first filter chamber, a second filter chamber, and a sedimentation chamber according to functions, wherein:

[0012] The liquid receiving chamber is formed with a receiving area and a pumping area interconnected with each other through a first isolation plate group, and a predetermined distance is maintained between the top of the first isolation plate group and the liquid receiving chamber;

[0013] It also includes a circulation pump tube group, which is used to discharge the liquid near the bottom of the pumping area into the RO membrane filtration module provided in the first filter chamber;

[0014] The second filter chamber is provided with a stirring blade driven to rotate by a motor, and a vertically arranged aeration pipe is also provided at the axis of the stirring blade;

[0015] An MBR filter membrane group is arranged in the sedimentation chamber.

[0016] Preferably, the first isolation plate group includes symmetrically arranged vertical plates, and a plurality of filter screen pads are provided between the two vertical plates;

[0017] The mesh numbers of the plurality of filter screen pads increase from bottom to top.

[0018] Preferably, the receiving area is provided with arc-shaped guide plates fixed to the vertical plates and arranged alternately on the inner wall opposite to the vertical plates;

[0019] The receiving area is provided with a straight-legged trapezoidal receiving tube for receiving the liquid that is not drained by the arc-shaped drain plate;

[0020] The straight-leg trapezoidal receiving cylinder maintains a predetermined distance from the bottom of the receiving area to form a flow passage, and the flow passage is communicated with the lower position of the first isolation plate group.

[0021] Preferably, the RO membrane filtration module includes a plate body and a RO membrane plate group arranged between every two adjacent plate bodies;

[0022] The RO membrane plate group consists of a shaping plate and a RO membrane arranged on the first side of the shaping plate.

[0023] Preferably, the surface I of the shaping plate is provided with:

[0024] A liquid collecting trough arranged at a low position, wherein a water absorbing sponge plate is provided in the liquid collecting trough;

[0025] Through holes located at a high position and arranged in a linear array, extending through surface II;

[0026] Wherein: the liquid collecting groove is connected with a plurality of the through holes;

[0027] A drainage cotton body is provided on the II surface of the shaping plate, and the drainage cotton body is provided with capillary drainage cotton arranged symmetrically about its center. The drainage cotton body extends into the through hole, and the RO membrane is attached to the II surface.

[0028] Preferably, the stirring blade is located at the bottom of the second filter chamber and is centrally arranged;

[0029] The aeration pipe is fixed on the stirring blade, on which a counter-flow propeller is provided, wherein:

[0030] The stirring blade causes the liquid to flow obliquely upward, and the counter-flow propeller causes the liquid to flow obliquely downward.

[0031] Preferably, a protrusion is provided on the upper wall of the second filter chamber, and the protrusion forms a first circulation groove and a second circulation groove in the second filter chamber;

[0032] The stirring blade is located in the first circulation tank;

[0033] The counter-flow propeller is located in the second circulation tank.

[0034] Preferably, a drainage pipe is provided on the inner wall of the second filter chamber, the drainage pipe is connected to a flow ring provided at the bottom of the second filter chamber, and the stirring blade is located on the flow ring;

[0035] The water inlet of the drainage pipe extends outside the raised portion.

[0036] Preferably, the top of the raised portion is an arc-shaped structure, and the water inlet of the drainage pipe is located at the intersection of the raised portion and the inner wall of the second filter chamber, and the intersection is the lower position of the arc-shaped structure.

[0037] As a preference, it further comprises a parallel drainage pipe, which is arranged in the sedimentation chamber and connected to the second filter chamber at the output end at a high position;

[0038] The MBR filter membrane group is located above the parallel drainage pipe, and the specifications of the two are consistent;

[0039] The sedimentation chamber is provided with a baffle wall which is not connected to the top thereof, and is used to form an MBR filter tank and a static tank which are interconnected with each other in the sedimentation chamber.

[0040] In the above technical solution, the present invention provides a circulating hybrid energy-saving and environmentally friendly sewage treatment equipment with the following beneficial effects: sewage enters the liquid receiving chamber, then overflows from the receiving area to the pumping area, is then pumped into the first filter chamber by the circulating pump pipe assembly, and then enters the second filter chamber through the RO membrane filtration module. The motor then drives the stirring blade to stir the sewage, while the aeration pipe aerates the sewage to increase the oxygen content for biodegradation. Finally, the treated liquid is pumped into the sedimentation chamber, filtered through the MBR membrane group, and discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0042] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0043] Figure 2 A schematic cross-sectional view of an embodiment of the present invention;

[0044] Figure 3 A schematic structural diagram of a second filter chamber provided in an embodiment of the present invention;

[0045] Figure 4 A schematic structural diagram of an aeration tube provided in an embodiment of the present invention;

[0046] Figure 5 Schematic diagram of the structure of surface I and surface II of the shaping plate provided in an embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 1. Box body; 11. Liquid receiving chamber; 12. First filter chamber; 13. Second filter chamber; 131. Raised portion; 132. Drainage pipe; 133. Collecting ring; 14. Sedimentation chamber; 141. Baffle wall; 2. First isolation plate group; 21. Filter screen pad; 22. Arc-shaped drainage plate; 23. Straight-leg trapezoidal receiving cylinder; 3. Circulation pump pipe group; 4. RO membrane filtration module; 41. Plate body; 42. RO membrane plate group; 421. Forming plate; 4211. Collecting trough; 4212. Water-absorbing sponge plate; 4213. Through hole; 5. Motor; 51. Stirring blade; 6. Aeration pipe; 61. Counterflow propeller; 7. MBR filter membrane group; 80. Drainage cotton body; 81. Capillary drainage cotton; 9. Parallel drainage pipe; 100. First circulation trough; 101. Second circulation trough. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0050] like Figure 1-5 As shown, a circulating hybrid energy-saving and environmentally friendly sewage treatment equipment includes a box body 1 which is divided into a liquid receiving chamber 11, a first filter chamber 12, a second filter chamber 13, and a sedimentation chamber 14 according to its functions, wherein:

[0051] The liquid receiving chamber 11 is formed with a receiving area and a pumping area interconnected with each other through the first isolation plate group 2. The top of the first isolation plate group 2 maintains a predetermined distance from the liquid receiving chamber 11.

[0052] It also includes a circulation pump tube group 3, which is used to discharge the liquid near the bottom of the pumping area into the RO membrane filtration module 4 set in the first filter chamber 12;

[0053] The second filter chamber 13 is provided with a stirring blade 51 driven by a motor 5 to rotate, and a vertically arranged aeration pipe 6 is also provided at the axis thereof;

[0054] An MBR filter membrane group 7 is arranged in the sedimentation chamber 14 .

[0055] Specifically, in the above embodiment, liquid is pumped between the second filter chamber 13 and the sedimentation chamber 14 by a circulation pump to transfer the liquid.

[0056] In the above technology, sewage enters the liquid receiving chamber 11, then flows from the receiving area to the pumping area, and is then pumped into the first filter chamber 12 by the circulating pump pipe group 3. Then, it passes through the RO membrane filter module 4 and enters the second filter chamber 13. Then, the motor 5 drives the stirring blade 51 to stir the sewage. At the same time, the aeration pipe 6 aerates the sewage to increase the oxygen content for biodegradation. Finally, the treated liquid is pumped into the sedimentation chamber 14, filtered by the MBR filter membrane group 7, and discharged after stagnating.

[0057] As an embodiment further provided by the present invention, the first isolation plate group 2 includes symmetrically arranged vertical plates, and a plurality of filter screen pads 21 are provided between the two vertical plates; and the mesh numbers of the plurality of filter screen pads 21 increase from bottom to top.

[0058] Furthermore, the receiving area is provided with arc-shaped guide plates 22 fixed to the vertical plates and arranged alternately on the inner wall opposite to the vertical plates;

[0059] The receiving area is provided with a straight-legged trapezoidal receiving tube 23 for receiving the liquid drained down by the arc-shaped drain plate 22;

[0060] The straight-leg trapezoidal receiving tube 23 maintains a predetermined distance from the bottom of the receiving area to form a flow passage, which is communicated with the lower position of the first isolation plate group 2.

[0061] Specifically, in the above embodiment, the sewage enters the liquid receiving chamber 11, and then the incoming liquid enters and then first enters the receiving arc-shaped drainage plate 22 for reception, and then flows into the receiving arc-shaped drainage plate 22 of the next level, and reduces the flow rate of the incoming sewage through buffering, and then flows into the straight-leg trapezoidal receiving tube 23, and then overflows out of the straight-leg trapezoidal receiving tube 23, and then flows downstream through the flow channel, and then is discharged into the first isolation plate group 2 through the water pump, and is intercepted by multiple filter pads 21 as it rises, and then the remaining liquid enters the pumping area.

[0062] As another embodiment further provided by the present invention, the RO membrane filtration module 4 includes a plate body 41 and a RO membrane plate group 42 arranged between every two adjacent plates 41;

[0063] The RO membrane plate group 42 consists of a shaping plate 421 and a RO membrane arranged on a first side of the shaping plate 421.

[0064] Furthermore, the I surface of the shaping plate 421 is provided with:

[0065] A liquid collecting trough 4211 is arranged at a low position, and a water absorbing sponge plate 4212 is provided in the liquid collecting trough 4211;

[0066] Through holes 4213 arranged at a high position and in a linear array, extending through surface II;

[0067] Wherein: the liquid collecting groove 4211 is connected with a plurality of through holes 4213;

[0068] A drainage cotton body 80 is provided on the II surface of the shaping plate 421, and the drainage cotton body 80 is provided with capillary drainage cotton 81 arranged symmetrically about its center. The drainage cotton body 80 extends into the through hole 4213, and the PD membrane is attached to the II surface.

[0069] Specifically, when liquid enters the RO membrane plate assembly 42, it is first drawn by the drainage sponges 80, then flows upward to the through-holes 4213. There, it is evenly directed onto the RO membrane by the drainage sponges 80 and capillary sponges 81. It is then drawn by another set of drainage sponges 80, then flows upward to the through-holes 4213. There, it is evenly directed onto the RO membrane by the drainage sponges 80 and capillary sponges 81. After being filtered by multiple sets of RO membrane plate assemblies 42, it finally enters the compartments within the first filter chamber 12. The filtered liquid then drains from the top of the compartments and, as the compartments fill, into the second filter chamber 13. When the second filter chamber 13 reaches the treated water level, the liquid receiving chamber 11 stops accepting wastewater.

[0070] As another embodiment further provided by the present invention, the stirring blade 51 is located at the bottom of the second filter chamber 13 and is arranged in the center; the aeration pipe 6 is fixed on the stirring blade 51, and a counter-flow propeller 61 is provided on it, wherein: the stirring blade 51 causes the liquid to flow obliquely upward, and the counter-flow propeller 61 causes the liquid to flow obliquely downward.

[0071] Furthermore, a protrusion 131 is provided on the inner wall of the second filter chamber 13 , which forms a first circulation groove 100 and a second circulation groove 101 in the second filter chamber 13 ; the stirring blade 51 is located in the first circulation groove 100 ; and the counterflow propeller 61 is located in the second circulation groove 101 .

[0072] Specifically, in the above embodiment, as the liquid enters the stirring blade 51, the liquid flows obliquely upward and then hits the protrusion 131, forming a vortex in the first circulation groove 100;

[0073] The synchronous counter-flow propeller 61 drives the liquid to flow obliquely downward, thereby forming a vortex in the second circulation groove 101 when sucking the liquid flowing into the first circulation groove 100.

[0074] Particles will accumulate at the two vortices and form a retention relationship.

[0075] It should be noted that after the biological liquid is added through the aeration pipe 6, aeration is performed, and the added oxygen is exhausted by the exhaust fan of the second filter chamber 13.

[0076] As another embodiment further provided by the present invention, a drainage pipe 132 is provided on the inner wall of the second filter chamber 13, the drainage pipe 132 is connected to the confluence ring 133 provided at the bottom of the second filter chamber 13, and the stirring blade 51 is located at the confluence ring 133; the water inlet of the drainage pipe 132 extends to the outside of the protrusion 131.

[0077] Specifically, in the above embodiment, the liquid in the second circulation tank 101 is drawn into the merge ring 133 through the drainage pipe 132 and then discharged by the stirring blade 51 to form an external circulation.

[0078] As another embodiment further provided by the present invention, the top of the protrusion 131 is an arc-shaped structure, and the water inlet of the drainage pipe 132 is located at the intersection of the protrusion 131 and the inner wall of the second filter chamber 13, and the intersection is the lower position of the arc-shaped structure.

[0079] Specifically, because the top of the raised portion 131 is an arc-shaped structure and the water inlet of the drainage pipe 132 is at a low position, a Venturi effect is formed during suction, and a third vortex is formed here. Because the pipe opening for suction into the sedimentation chamber 14 is set on the aeration pipe 6, when the aeration pipe 6.

[0080] It should be noted that the aeration pipe 6 in the above embodiment needs to perform three functions, and the function switching needs to be coordinated through the solenoid valve, and the corresponding biological liquid supply and aeration supply are common knowledge and will not be described in detail.

[0081] As another embodiment further provided by the present invention, it also includes a parallel drainage pipe 9, which is arranged in the sedimentation chamber 14 and is connected to the second filter chamber 13 at the output end at a high position;

[0082] The MBR membrane group 7 is located above the parallel drainage pipe 9, and the specifications of the two are the same;

[0083] The sedimentation chamber 14 is provided with a baffle wall 141 which is not connected to the top thereof, and is used to form the sedimentation chamber 14 into an MBR filter tank and a stilling tank which are interconnected.

[0084] Specifically, in the above embodiment, the liquid drawn into the sedimentation chamber 14 will rise from below the MBR filter membrane group 7. During the process, the particles in the liquid will be re-adsorbed by the MBR filter membrane group 7. When the liquid reaches the baffle wall 141, it will overflow into the stilling tank and remain still until use.

[0085] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A circulating mixed energy-saving and environmentally friendly sewage treatment equipment, characterized in that: The invention comprises a box body (1) which is divided into a liquid receiving chamber (11), a first filter chamber (12), a second filter chamber (13), and a sedimentation chamber (14) according to its functions, wherein: The liquid receiving chamber (11) is formed with a receiving area and a pumping area interconnected with each other through the first isolation plate group (2), and a predetermined distance is maintained between the top of the first isolation plate group (2) and the liquid receiving chamber (11); It also includes a circulation pump tube assembly (3), which is used to discharge the liquid near the bottom of the pumping area into the RO membrane filtration module (4) arranged in the first filter chamber (12); The second filter chamber (13) is provided with a stirring blade (51) driven to rotate by a motor (5), and a vertically arranged aeration pipe (6) is also provided at the axis thereof; An MBR filter membrane group (7) is provided in the sedimentation chamber (14); The RO membrane filtration module (4) comprises a plate body (41) and a RO membrane plate group (42) arranged between every two adjacent plate bodies (41); The RO membrane plate group (42) is composed of a shaping plate (421) and a RO membrane arranged on a first side surface of the shaping plate (421); The I surface of the shaping plate (421) is provided with: A liquid collecting trough (4211) arranged at a low position, wherein a water-absorbing sponge plate (4212) is provided in the liquid collecting trough (4211); Through holes (4213) arranged at a high position and in a linear array, extending through surface II; Wherein: the liquid collecting groove (4211) is connected to the plurality of through holes (4213); A drainage cotton body (80) is provided on surface II of the shaping plate (421), and capillary drainage cotton (81) is provided on the drainage cotton body (80) and is arranged symmetrically about its center. The drainage cotton body (80) extends into the through hole (4213), and the PD membrane is attached to surface II.

2. A circulating mixed energy-saving and environmentally friendly sewage treatment equipment according to claim 1, characterized in that: The first isolation plate group (2) comprises symmetrically arranged vertical plates, and a plurality of filter screen pads (21) are provided between the two vertical plates; The mesh numbers of the plurality of filter screen pads (21) increase from bottom to top.

3. A circulating mixed energy-saving and environmentally friendly sewage treatment equipment according to claim 1, characterized in that: The receiving area is provided with arc-shaped guide plates (22) fixed to the vertical plate and arranged in a staggered manner on the inner wall opposite to the vertical plate; The receiving area is provided with a straight-legged trapezoidal receiving tube (23) for receiving the liquid that is not drained by the arc-shaped drain plate (22); The straight-leg trapezoidal receiving cylinder (23) maintains a predetermined distance from the bottom of the receiving area to form a flow passage, and the flow passage is communicated with the lower position of the first isolation plate group (2).

4. A circulating mixed energy-saving and environmentally friendly sewage treatment equipment according to claim 1, characterized in that: The stirring blade (51) is located at the bottom of the second filter chamber (13) and is arranged centrally; The aeration pipe (6) is fixed on the stirring blade (51), on which a counter-flow propeller (61) is provided, wherein: The stirring blade (51) causes the liquid to flow obliquely upward, and the counter-flow propeller (61) causes the liquid to flow obliquely downward.

5. A circulating mixed energy-saving and environmentally friendly sewage treatment equipment according to claim 4, characterized in that: The inner wall of the second filter chamber (13) is provided with a protrusion (131), and the protrusion (131) forms a first circulation groove (100) and a second circulation groove (101) in the second filter chamber (13); The stirring blade (51) is located in the first circulation tank (100); The counter-flow propeller (61) is located in the second circulation groove (101).

6. A circulating mixed energy-saving and environmentally friendly sewage treatment equipment according to claim 5, characterized in that: A drainage pipe (132) is provided on the inner wall of the second filter chamber (13), the drainage pipe (132) is in communication with a flow ring (133) provided at the bottom of the second filter chamber (13), and the stirring blade (51) is located on the flow ring (133); The water inlet of the drainage pipe (132) extends outside the raised portion (131).

7. A circulating mixed energy-saving and environmentally friendly sewage treatment equipment according to claim 6, characterized in that: The top of the raised portion (131) is an arc-shaped structure, and the water inlet of the drainage pipe (132) is located at the intersection of the raised portion (131) and the inner wall of the second filter chamber (13), and the intersection is the lower position of the arc-shaped structure.

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