Device and method for water treatment

Abstract

The present invention provides a device and method for treating a water body, comprising a membrane biological reaction cylinder, on which a plurality of membrane biological reaction units are arranged in an annular array, and the plurality of membrane biological reaction units are connected with the inside of the membrane biological reaction cylinder through water inlet holes arranged at the connection of the membrane biological reaction cylinder, the purification cylinder body is formed by a pair of water inlet ducts and a pair of arc plates fixedly welded, the plurality of combing aeration rods are respectively connected with corresponding aeration cylinders through air channels arranged inside the arc plates, the ends of the telescopic rods away from the pistons are movably sleeved on the camshafts, and combing gaps are formed between the plurality of L-shaped connecting rods, the membrane biological reaction units of the present invention are in a rotating state, and cooperate with the direct aeration and combing of the combing aeration rods, thereby increasing the probability of combining biofilm fillers with oxygen, effectively preventing particulate matter from adhering to MBR hollow fiber filaments, and thus ensuring the purification efficiency of the membrane biological reaction unit.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification devices, and in particular to a device and method for water treatment. Background Art

[0002] A convection type MBR wastewater treatment equipment with application number "CN201820915919.7" in the prior art includes an MBR pool, an MBR diaphragm and a fan, wherein the lower side of the interior of the MBR pool is connected with a first connection block, and the upper part of the first connection block is connected with an MBR membrane connection block, a fourth valve is arranged on the lower right side of the MBR pool, and the fourth valve is connected to the MBR pool through a two-way water pipe, the fan is connected to the MBR membrane connection block through a two-way water pipe, and a first valve is arranged on the left side of the fan, and the first valve is located on the right side of the MBR pool, and the upper and lower sides of the MBR diaphragm are arranged with the MBR membrane connection block. The convection type MBR wastewater treatment equipment realizes the complete separation of sludge retention time and hydraulic retention time through the MBR diaphragm, so that the sludge decomposition is more sufficient, and through hydraulic backwashing, the sludge and water are fully mixed, which is conducive to the formation of a larger bacterial floc, and a support frame and a spring are arranged, which saves space, plays a shock-absorbing role, and can reduce noise.

[0003] However, the above-mentioned convective MBR wastewater treatment equipment still has obvious defects during use: 1. The MBR diaphragm of the above-mentioned device is placed statically. Since the water body contains more granular matter, the statically placed MBR diaphragm is prone to accumulation of granular matter, thereby affecting the water purification effect; 2. The aeration component of the traditional MBR purification tank is usually set at the bottom of the tank body, and this setting method easily makes it difficult for the airflow to fully combine with the biofilm filler on the MBR component during the rising process, thereby affecting the purification effect. Summary of the invention

[0004] The object of the present invention is to provide a device and method for water treatment to solve the problems raised in the above background technology.

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

[0006] A device and method for treating a water body, comprising a membrane bioreactor cylinder, on which a plurality of membrane bioreactor units are arranged in an annular array, and the plurality of membrane bioreactor units are connected to the inside of the membrane bioreactor cylinder through water inlet holes arranged at the connection of the membrane bioreactor cylinder, and the inside of the membrane bioreactor cylinder is filled with MBR hollow fiber membranes, and the plurality of MBR hollow fiber membranes are connected to through holes opened at one end of the membrane bioreactor cylinder, and the plurality of through holes are connected to water outlet collection holes arranged at the end of the membrane bioreactor cylinder;

[0007] The membrane biological reaction cylinder is movably arranged at the axis of the circular side plates on both sides, and the circular side plates on both sides are fixedly installed on the two sides of the purification cylinder body. The purification cylinder body is formed by a pair of water inlet ducts and a pair of arc plates fixedly welded together, and a number of combing aeration rods are fixedly installed on the arc plates, and aeration holes are evenly spaced on the combing aeration rods, and the combing aeration rods are respectively connected with the corresponding aeration cylinders through the air channels arranged inside the arc plates, and the aeration cylinders are movably provided with pistons, and the pistons are provided with one-way air intake valves, and the ends of the pistons away from the arc plates are movably connected with telescopic rods, and the ends of the telescopic rods away from the pistons are movably sleeved on the camshafts, and the camshafts pass through the corresponding water inlet ducts and are fixedly connected with the axis of the internal impeller;

[0008] The membrane biological reaction unit comprises a plurality of L-shaped connecting rods arranged in a rectangular array, each of which is fixedly connected with an MBR hollow fiber, a combing gap is formed between the plurality of L-shaped connecting rods, and the combing aeration rod is intermittently matched with the combing gap.

[0009] Preferably, the purification cylinder is fixedly installed on both sides of the box.

[0010] Preferably, camshaft seats are fixedly mounted on the upper and lower sides of the housing, and the ends of the camshafts on both sides away from the impeller are movably mounted in the camshaft seats.

[0011] A water treatment method, using the above-mentioned water treatment device, comprises the following steps:

[0012] Step 1: Pump the domestic sewage to be filtered into the upper and lower water inlet ducts at the same time through the pump machine, and the sewage enters the purification cylinder through the water inlet duct, and the membrane bioreactor cylinder rotates by pushing the membrane bioreactor unit;

[0013] Step 2: When domestic sewage enters the water inlet duct, it simultaneously drives the impeller to rotate, the impeller rotation drives the camshaft to rotate, the camshaft rotation drives the telescopic rod to extend and retract, the telescopic rod extension and retraction drives the piston to extend and retract in the aeration cylinder, and the gas is pumped into the combing aeration rod through the airway through the piston extension and retraction, and finally discharged through the aeration cylinder;

[0014] Step 3: The sewage is filtered once through the MBR hollow fiber filaments on the membrane bioreactor unit, and enters the membrane bioreactor through the water inlet hole on the side of the membrane bioreactor, and is filtered again through the MBR hollow fiber membrane installed inside, and finally discharged from the water outlet collection hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention uses a pump to pump the water to be purified into the purification cylinder, so that the membrane biological reaction cylinder is driven to rotate by the impact of the water flow, so that the membrane biological reaction unit installed thereon is in a rotating state. This method effectively prevents particles from adhering to the MBR hollow fiber filaments, thereby ensuring the purification efficiency of the membrane biological reaction unit;

[0017] 2. The present invention purifies the water body once through the membrane bioreactor unit, and the purified water body enters the membrane bioreactor cylinder for secondary purification, thereby ensuring the purification effect of the water body;

[0018] 3. The present invention aerates and combs the MBR hollow fibers connected thereto by combing the aeration rod through the combing gaps between the L-shaped connecting rods, thereby effectively preventing the disordered arrangement of the MBR hollow fibers. At the same time, by directly aerating the combing gaps, the probability of combining biofilm fillers with oxygen is increased, thereby ensuring the purification effect of biofilm degradation. Through the impact of large-flow bubbles, particulate matter can be further prevented from adhering to the MBR hollow fibers.

[0019] The membrane bioreactor unit of the present invention is in a rotating state, and cooperates with the direct aeration and combing of the combing aeration rod to increase the probability of combining biofilm fillers with oxygen, effectively preventing particles from adhering to the MBR hollow fiber filaments, thereby ensuring the purification efficiency of the membrane bioreactor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the purification cylinder of the present invention;

[0022] Figure 3 It is a top view schematic diagram of the installation structure of the membrane bioreactor unit of the present invention;

[0023] Figure 4 It is a schematic side view of the membrane bioreactor unit of the present invention;

[0024] Figure 5 It is a schematic diagram of the enlarged structure of the A region of the present invention;

[0025] Figure 6 It is a schematic diagram of the enlarged structure of the B region of the present invention;

[0026] Figure 7 It is a schematic diagram of the impeller installation structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the overall structure of the purification cylinder of the present invention.

[0028] In the figure: 1 membrane bioreactor cylinder, 2 membrane bioreactor unit, 3 water inlet hole, 4 MBR hollow fiber membrane, 5 through hole, 6 water outlet collection hole, 7 circular side plate, 8 purification cylinder, 9 water inlet duct, 10 arc plate, 11 combing aeration rod, 12 aeration cylinder, 13 piston, 14 telescopic rod, 15 camshaft, 16 impeller, 17 L-type connecting rod, 18 MBR hollow fiber filament, 19 combing gap, 20 box, 21 camshaft seat, 22 aeration hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example:

[0031] See also Figure 1-8 , the present invention provides a technical solution:

[0032] A device and method for treating a water body, comprising a membrane bioreactor cylinder 1, on which a plurality of membrane bioreactor units 2 are arranged in an annular array, the plurality of membrane bioreactor units 2 are connected to the inside of the membrane bioreactor cylinder 1 through water inlet holes 3 arranged at the connection of the membrane bioreactor cylinder 1, the inside of the membrane bioreactor cylinder 1 is filled with MBR hollow fiber membranes 4, the plurality of MBR hollow fiber membranes 4 are connected to through holes 5 opened at one end of the membrane bioreactor cylinder 1, and the plurality of through holes 5 are connected to water outlet collection holes 6 arranged at the end of the membrane bioreactor cylinder 1;

[0033] The membrane bioreactor unit 2 is used to filter the water body once. The water body after the primary filtration enters the membrane bioreactor cylinder 1 through the water inlet hole 3 opened on the side wall of the membrane bioreactor cylinder 1. The MBR hollow fiber membrane 4 arranged inside the membrane bioreactor cylinder 1 is used to filter the water body after the primary filtration for a second time. The water body after the secondary filtration passes through the through hole 5 opened at one end of the membrane bioreactor cylinder 1 and is finally discharged from the water outlet collection hole 6. Through the secondary filtration method, the pollutants in the water body can be effectively purified and filtered.

[0034] The membrane bioreactor cylinder 1 is movably arranged at the axis of the circular side plates 7 on both sides, and the circular side plates 7 on both sides are fixedly installed on both sides of the purification cylinder body 8. The purification cylinder body 8 is formed by a pair of water inlet ducts 9 and a pair of arc plates 10 fixedly welded, and a plurality of combing aeration rods 11 are fixedly installed on the arc plates 10, and aeration holes 22 are evenly spaced on the plurality of combing aeration rods 11, and the plurality of combing aeration rods 11 are respectively connected with the corresponding aeration cylinder 12 through the air channels arranged inside the arc plates 10, and a piston 13 is movably arranged in the aeration cylinder 12, and a one-way air intake valve is arranged on the piston 13, and the end of the piston 13 away from the arc plate 10 is movably connected with a telescopic rod 14, and the end of the telescopic rod 14 away from the piston 13 is movably sleeved on the camshaft 15, and the camshaft 15 passes through the corresponding water inlet duct 9 and is fixedly connected with the axis of the internal impeller 16;

[0035] The sewage entering the water inlet duct 9 pushes the membrane biological reaction unit 2, thereby forcing the membrane biological reaction cylinder 1 to rotate. The water inlet duct 9 of the present invention is arranged at a tangent position of the circular structure formed by the arc plate 10. This arrangement can ensure that the water flow has sufficient driving effect on the membrane biological reaction unit 2. During the rotation process, the membrane biological reaction unit 2 effectively prevents the accumulation of particulate matter on the MBR hollow fiber filament 18 in a long-term static state, thereby ensuring the purification efficiency. During the rotation process of the membrane biological reaction cylinder 1, the sewage pushes the impeller 16 to rotate when entering the water inlet duct 9, and the rotation of the impeller 16 drives the camshaft 15 to rotate. The rotation of the camshaft 15 drives the telescopic rod 14 to extend and retract. The telescopic rod 14 extends and retracts and drives the piston 13 to extend and retract in the aeration cylinder 12. The piston 13 is extended and retracted to pump the gas into the combing aeration rod 11 through the airway, and finally discharged through the aeration cylinder 12. This aeration method effectively ensures that oxygen is fully combined with the biofilm filler, thereby improving the purification effect. In addition, the particulate matter attached to the surface can be blown away through the close-range aeration method, thereby further ensuring the purification efficiency.

[0036] The membrane biological reaction unit 2 includes a plurality of L-shaped connecting rods 17 arranged in a rectangular array, each of which is fixedly connected with an MBR hollow fiber filament 18 , and combing gaps 19 are formed between the plurality of L-shaped connecting rods 17 , and the combing aeration rods 11 are intermittently matched with the combing gaps 19 .

[0037] The rotation of the membrane bioreactor unit 2 combs the aeration rods 11 and the combing gaps 19 formed by passing through each L-shaped connecting rod 17 , thereby ensuring that the gas can act on the MBR hollow fiber filaments 18 .

[0038] As a preferred embodiment, the purification cylinder 8 is fixedly installed on both sides of the box body 20, and the purification cylinder 8 is supported and fixed by the box body 20.

[0039] As a preferred embodiment, camshaft seats 21 are fixedly installed on the upper and lower sides of the housing 20, and the ends of the camshafts 15 on both sides away from the impeller 16 are movably installed in the camshaft seats 21, and the camshafts 15 are restricted by the camshaft seats 21 to ensure normal rotation of the camshafts 15.

[0040] A water treatment method, using the above-mentioned water treatment device, comprises the following steps:

[0041] Step 1: Pump the domestic sewage to be filtered into the upper and lower water inlet ducts 9 simultaneously by means of a pump, and the sewage enters the purification cylinder 8 through the water inlet duct 9, and the membrane bioreactor cylinder 1 rotates by pushing the membrane bioreactor unit 2;

[0042] Step 2: When the domestic sewage enters the water inlet duct 9, the impeller 16 is synchronously driven to rotate, and the rotation of the impeller 16 drives the camshaft 15 to rotate, and the rotation of the camshaft 15 drives the telescopic rod 14 to extend and retract, and the telescopic rod 14 extends and retracts to drive the piston 13 in the aeration cylinder 12, and the gas is pumped into the combing aeration rod 11 through the airway through the extension and retraction of the piston 13, and finally discharged through the aeration cylinder 12;

[0043] Step 3: The sewage is filtered once through the MBR hollow fiber filaments 18 on the membrane bioreactor unit 2, and enters the membrane bioreactor cylinder 1 through the water inlet 3 on the side of the membrane bioreactor cylinder 1, and is filtered again through the MBR hollow fiber membrane 4 arranged inside, and finally discharged from the water outlet collection hole 6.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for treating a water body, comprising a membrane bioreactor (1), characterized in that: A plurality of membrane bioreactor units (2) are arranged in a ring array on the membrane bioreactor cylinder (1); the plurality of membrane bioreactor units (2) are connected to the interior of the membrane bioreactor cylinder (1) through water inlet holes (3) arranged at the connection of the membrane bioreactor cylinder (1); the interior of the membrane bioreactor cylinder (1) is filled with MBR hollow fiber membranes (4); the plurality of MBR hollow fiber membranes (4) are connected to through holes (5) opened at one end of the membrane bioreactor cylinder (1); and the plurality of through holes (5) are connected to water outlet collection holes (6) arranged at the end of the membrane bioreactor cylinder (1); The membrane biological reaction cylinder (1) is movably arranged at the axis of the circular side plates (7) on both sides. The circular side plates (7) on both sides are fixedly installed on both sides of the purification cylinder (8). The purification cylinder (8) is formed by a pair of water inlet ducts (9) and a pair of arc plates (10) fixedly welded. A plurality of combing aeration rods (11) are fixedly installed on the arc plates (10). Aeration holes (22) are evenly spaced on the combing aeration rods (11). The combing aeration rods (11) are respectively connected to the arc plates. (10) The air passage arranged inside is communicated with the corresponding aeration cylinder (12), a piston (13) is movably arranged inside the aeration cylinder (12), a one-way air inlet valve is arranged on the piston (13), one end of the piston (13) away from the arc plate (10) is movably connected with a telescopic rod (14), one end of the telescopic rod (14) away from the piston (13) is movably sleeved on a camshaft (15), and the camshaft (15) passes through the corresponding water inlet duct (9) and is fixedly connected to the axis of the internal impeller (16); The membrane biological reaction unit (2) comprises a plurality of L-shaped connecting rods (17) arranged in a rectangular array, each of the L-shaped connecting rods (17) being fixedly connected with an MBR hollow fiber (18), a combing gap (19) being formed between the plurality of L-shaped connecting rods (17), and the combing aeration rod (11) being intermittently matched with the combing gap (19).

2. A device for water treatment according to claim 1, characterized in that: The purification cylinder (8) is fixedly mounted on both sides of the box (20).

3. A device for water treatment according to claim 2, characterized in that: Camshaft seats (21) are fixedly mounted on the upper and lower sides of the housing (20), and the ends of the camshafts (15) on both sides away from the impeller (16) are movably mounted in the camshaft seats (21).

4. A method for treating a water body, using the water body treatment device according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: Pumping the domestic sewage to be filtered into the upper and lower water inlet ducts (9) simultaneously by means of a pump, the sewage enters the purification cylinder (8) through the water inlet duct (9), and the membrane bioreactor cylinder (1) is rotated by pushing the membrane bioreactor unit (2); Step 2: When domestic sewage enters the water inlet duct (9), the impeller (16) is synchronously driven to rotate, the rotation of the impeller (16) drives the camshaft (15) to rotate, the rotation of the camshaft (15) drives the telescopic rod (14) to extend and retract, the telescopic rod (14) drives the piston (13) to extend and retract in the aeration cylinder (12), and the gas is pumped into the combing aeration rod (11) through the airway through the extension and retraction of the piston (13), and finally discharged through the aeration cylinder (12); Step 3: The sewage is filtered once through the MBR hollow fiber filaments (18) on the membrane bioreactor unit (2), and enters the membrane bioreactor cylinder (1) through the water inlet (3) on the side of the membrane bioreactor cylinder (1), and is filtered again through the MBR hollow fiber membrane (4) arranged inside, and finally discharged from the water outlet collection hole (6).

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