Device for treating mariculture wastewater

Abstract

The utility model provides a device for treating mariculture wastewater, which comprises a biochemical treatment system and a pretreatment system communicated with the biochemical treatment system, and a lifting pump is arranged in the biochemical treatment system. Sewage which is subjected to organic matter degradation and biochemical treatment in the biochemical treatment system is conveyed to the aeration treatment system through a lifting pump, water is conveyed into the MBBR treatment system through a lifting pump arranged in the aeration treatment system, and the sewage is conveyed into the MBBR treatment system through a lifting pump arranged in the MBBR treatment system. The water without the suspended solids and the microorganisms is conveyed to a disinfection system, the disinfection system is provided with a feeding pipe set communicated with the disinfection system, and the inlet end of the feeding pipe set is communicated with a storage system. According to the MBBR device, the pretreatment system is additionally arranged to filter solid particles in sewage, so that the solid particles can be effectively prevented from being attached to the surface of a biofilm carrier of the MBBR device, and the service life of the MBBR device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mariculture protection, especially relates to the device for handling mariculture wastewater. BACKGROUND

[0002] Mariculture wastewater is mainly derived from feed residues, excrement, urine, dead bodies of cultured animals and drug residues in the process of cultivation. These wastewaters contain a large amount of nutrients and microorganisms, which have a great impact on the pollution of marine water bodies and the destruction of ecological environment.

[0003] The mariculture wastewater treatment process mainly includes biochemical treatment for degrading organic matter, aeration treatment, MBBR process for removing suspended solids and microorganisms, and disinfection.

[0004] Solid particles (such as feed residues, excrement, and even some metal particles) exist in the cultivation wastewater. When applied, the solid particles adhere to the surface of the biological membrane carrier of the MBBR device. If there are too many solid particles, it will affect the treatment capacity, and even cause damage.

[0005] Therefore, how to solve the defects in the above technical solutions has become one of the problems to be solved in the technical field of mariculture protection. INVENTION CONTENTS

[0006] In view of the problems in the background art, the utility model provides a device for handling mariculture wastewater, which comprises a biochemical treatment system and a pretreatment system connected to the biochemical treatment system. The biochemical treatment system is internally provided with a booster pump. The wastewater treated by the biochemical treatment system for degrading organic matter is delivered to an aeration treatment system by the booster pump. The water in the aeration treatment system is delivered to an MBBR treatment system by the booster pump. The water treated by the MBBR treatment system for removing suspended solids and microorganisms is delivered to a disinfection system by the booster pump. The disinfection system is provided with a delivery pipe group connected thereto. The delivery pipe group is used to deliver medicine into the disinfection system for disinfection. The inlet end of the delivery pipe group is connected to a storage system.

[0007] Optionally, the treatment system comprises a pretreatment box, which is provided with an output pipeline and a screening roller. A plurality of screen holes are uniformly distributed on the screening roller.

[0008] Optionally, the screening drum is internally provided with a spiral conveying shaft, the spiral conveying shaft penetrates through the screening drum and the pretreatment box, is connected with a driving shaft of a driving system through a bearing assembly, a plurality of groups of spiral conveying blades are arranged on the spiral conveying shaft and the spiral conveying blades are gradually reduced in diameter away from the driving system.

[0009] Optionally, a sorting storage cylinder is mounted on the outer wall of the pretreatment box away from the driving system, the sorting storage cylinder is in communication with the outlet end of the screening drum, and the sorting storage cylinder is provided with a blowdown pipeline.

[0010] Optionally, the output pipeline comprises a second flow guide disc and a first flow guide disc, first support filter screens are arranged at the upper and lower ends of the first flow guide disc, a plurality of groups of first flow guide plates are welded on the first flow guide disc away from the two groups of first support filter screens, and the ends of the first flow guide plates in the direction of the center of the circle are in a trapezoidal shape.

[0011] Optionally, second support filter screens are arranged at the upper and lower ends of the second flow guide disc, a plurality of groups of second flow guide plates are welded on the second flow guide disc away from the two groups of second support filter screens, third flow guide plates are arranged on the second flow guide plates, the third flow guide plates are arranged obliquely between the second flow guide plates, and the ends of the second flow guide plates in the direction of the center of the circle are in a triangular shape.

[0012] Optionally, the first flow guide disc and the second flow guide disc are combined to form a screening flow guide assembly.

[0013] In summary, the beneficial effects of the present application are:

[0014] (1) The present application adds a pretreatment system to filter out solid particles in sewage, thereby effectively preventing solid particles from adhering to the surface of the biological membrane carrier of the MBBR device and prolonging the service life of the MBBR device.

[0015] (2) The driving system drives the spiral conveying shaft to rotate, the spiral conveying shaft drives the spiral blades to rotate, a certain spiral force is generated, at this time, the water flow is thrown out through the screen holes arranged on the screening drum along the direction of the force, and at this time, the impurities in the water are blocked by the screen holes and fall into the screening drum; and the impurities are conveyed into the sorting storage cylinder by the spiral conveying blades, and finally the liquid containing solid particle impurities is discharged through the blowdown pipeline.

[0016] (3) by adding in the output pipeline by the first flow guide disc and the second flow guide disc combination formed screening flow guide assembly, and further improve the filtering efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an embodiment of the whole structure schematic diagram of the device for treating seawater aquaculture wastewater of the utility model;

[0018] Figure 2 It is the pretreatment system structure schematic diagram of an embodiment of the device for treating seawater aquaculture wastewater of the utility model;

[0019] Figure 3 It is the device for treating seawater aquaculture wastewater of the utility model Figure 2 It is the internal part structure schematic diagram of the device for treating seawater aquaculture wastewater of the utility model;

[0020] Figure 4 It is the three-dimensional drawing of the pretreatment system of an embodiment of the device for treating seawater aquaculture wastewater of the utility model;

[0021] Figure 5 It is the screening flow guide assembly structure schematic diagram of an embodiment of the device for treating seawater aquaculture wastewater of the utility model in the output pipeline.

[0022] Reference signs:

[0023] 1, pretreatment system; 011, pretreatment box body; 012, screening roller; 013, drive system; 015, sorting storage cylinder; 016, blow-off pipeline; 017, spiral conveying shaft; 018, spiral conveying blade; 019, screen hole;

[0024] 2, biochemical treatment system;

[0025] 3, output pipeline; 033, first flow guide disc; 034, first flow guide plate; 035, second flow guide disc; 036, sealing connecting piece; 037, second flow guide plate; 038, third flow guide plate;

[0026] 4, aeration treatment system; 5, MBBR treatment system; 6, disinfection system; 7, delivery pipe group; 8, storage system. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be explained in further detail below by combining with the drawings and specific embodiments. Although the example embodiments are disclosed in the drawings, it should be understood that the utility model can be realized in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to facilitate a thorough understanding of the utility model and to enable the complete concept of the utility model to be conveyed to those skilled in the art.

[0028] In the description of the present specification, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art can combine and combine the different embodiments or features of the embodiments or examples described in the present specification without contradiction.

[0029] In the present utility model, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "a plurality of" means two or more than two, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0030] As shown in Figures 1-5 The present embodiment provides a device for treating mariculture wastewater, which comprises a biochemical treatment system 2 and a pretreatment system 1 connected with the biochemical treatment system 2. The biochemical treatment system 2 is internally provided with a lifting pump. The wastewater treated by the biochemical treatment system 2 for degrading organic matter is transported to an aeration treatment system 4 by the lifting pump. The water is transported to an MBBR treatment system 5 by the lifting pump arranged in the aeration treatment system 4. The water with removed suspended solids and microorganisms is transported to a disinfection system 6 by the lifting pump arranged in the MBBR treatment system. The disinfection system 6 is provided with a delivery pipe group 7 connected therewith. The delivery pipe group 7 is used for delivering medicine into the disinfection system 6 for disinfection. The inlet end of the delivery pipe group 7 is connected with a storage system 8. The storage system 8 is used for storing the purified water.

[0031] In the embodiment, by adding the pretreatment system 1, the solid particles in the sewage are filtered out, and then the solid particles can be effectively prevented from adhering to the surface of the biological membrane carrier of the MBBR device, and the service life of the MBBR device is prolonged.

[0032] Further, the treatment system 1 comprises a pretreatment box body 011, the pretreatment box body 011 is provided with an output pipeline 3, a screening roller 012 is arranged in the pretreatment box body 011, and a plurality of groups of screen holes are arranged on the screening roller 012 and uniformly distributed in the circumferential direction of the screening roller 012, the screen holes are small in diameter, and superfine screen holes are adopted.

[0033] The screening roller 012 is internally provided with a spiral conveying shaft 017, the spiral conveying shaft 017 penetrates through the screening roller 012 and the pretreatment box body 011, and is connected to the driving shaft of a driving system 013 through a bearing assembly, the driving system 013 is preferably a rotary motor, and is fixedly connected to the outer wall of the pretreatment box body 011 by means of fastening screws, and a plurality of groups of spiral conveying blades 018 are arranged on the spiral conveying shaft 017 and gradually decrease in diameter away from the driving system 013.

[0034] Further, a sorting storage cylinder 015 is arranged on the outer wall of the pretreatment box body 011 away from the driving system 013, the sorting storage cylinder 015 is connected to the outlet end of the screening roller 012, and the sorting storage cylinder 015 is provided with a blowdown pipeline 016.

[0035] In the embodiment, the driving system is started, the spiral conveying shaft 017 is driven to rotate by the driving system, the spiral conveying blades are driven to rotate by the spiral conveying shaft, a certain spiral force is generated, at this time, the water flow is thrown out through the screen holes arranged on the screening roller 012 along the direction of the force, and the impurities in the water are blocked by the screen holes and fall into the screening roller 012; and the impurities are conveyed into the sorting storage cylinder 015 by the spiral conveying blades, and finally the liquid containing the solid particle impurities is discharged through the blowdown pipeline.

[0036] In actual application, in order to increase the spiral force, the spiral stirring rods can be added to the spiral conveying shaft 017 close to the driving system 013, instead of the spiral conveying blades 018 on the spiral conveying shaft 017 close to the driving system 013, the spiral force is increased by the rotation of the spiral stirring rods, so that the water flow is more convenient to discharge from the screening roller through the screen holes and enter the treatment box body 011.

[0037] Further, the output pipeline 3 comprises a second deflector 035 and a first deflector 033, the first deflector 033 is equipped with first support filter screens (not annotated in the figure) at both upper and lower ends, and a plurality of first deflector plates 034 are welded on the first deflector 033 away from the positions of the two groups of first support filter screens, the end of the first deflector plate 034 towards the center of the circle is in trapezoidal shape.

[0038] Further, the second deflector 035 is equipped with second support filter screens (not annotated in the figure) at both upper and lower ends, and a plurality of second deflector plates 037 are welded on the second deflector 035 away from the positions of the two groups of second support filter screens, the second deflector plate 037 is equipped with a third deflector plate 038, and the third deflector plate is obliquely arranged between the second deflector plate 037, and the end of the second deflector plate 037 towards the center of the circle is in triangular shape.

[0039] Further, the first deflector and the second deflector combine to form a screening deflector assembly.

[0040] In the embodiment, the screening deflector assembly formed by the first deflector and the second deflector added in the output pipeline 3 further improves the filtering efficiency. The second deflector plate and the third deflector plate are used in cooperation, and the third deflector plate is obliquely arranged between the second deflector plate 037, thereby reducing the resistance when the fluid flows, and the second deflector plate and the first deflector plate are used in cooperation, so that the fluid is uniformly distributed along the entire surface of the deflector, thereby reducing the accumulation caused by the excessive concentration of fluid in a local area, and prolonging the service life of the filtering assembly.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A device for treating marine aquaculture wastewater, characterized in that: It includes a biochemical treatment system and a pretreatment system connected to the biochemical treatment system. The biochemical treatment system is provided with a lifting pump, which transports the sewage after biochemical treatment of degraded organic matter in the biochemical treatment system to the aeration treatment system through the lifting pump. The water is transported to the MBBR treatment system through the lifting pump provided in the aeration treatment system. The water with suspended solids and microorganisms removed is transported to the disinfection system through the lifting pump provided in the MBBR treatment system. The disinfection system is provided with a delivery pipe group connected thereto, and the inlet end of the delivery pipe group is connected to the storage system.

2. The device for treating marine aquaculture wastewater according to claim 1, characterized in that: The pretreatment system comprises a pretreatment box, wherein the pretreatment box is provided with an output pipe, a screening drum is provided in the pretreatment box, and the screening drum is provided with multiple groups of sieve holes evenly distributed along the circumference thereof.

3. The device for treating marine aquaculture wastewater according to claim 2, characterized in that: A spiral conveying shaft is provided inside the screening drum. The spiral conveying shaft passes through the screening drum and the pretreatment box, and is connected to the drive shaft of the drive system through a bearing assembly. Multiple groups of spiral conveying blades are provided on the spiral conveying shaft, and the diameters of the spiral conveying blades continuously decrease as they face away from the drive system.

4. The device for treating seawater aquaculture wastewater according to claim 3, characterized in that: A sorting storage cylinder is installed on the outer wall of the pretreatment box away from the driving system, and the sorting storage cylinder is connected to the outlet end of the screening drum. The sorting storage cylinder is provided with a sewage pipe.

5. The device for treating marine aquaculture wastewater according to claim 2, characterized in that: The output pipe includes a second guide plate and a first guide plate. The upper and lower ends of the first guide plate are equipped with first supporting filter screens, and multiple groups of first guide plates are welded on the first guide plate away from the positions of the two groups of first supporting filter screens. The ends of the first guide plates facing the center of the circle are trapezoidal.

6. The device for treating marine aquaculture wastewater according to claim 5, characterized in that: The second guide plate is equipped with a second supporting filter screen at both ends, and multiple groups of second guide plates are welded on the second guide plate away from the two groups of second supporting filter screens. A third guide plate is provided on the second guide plate, and the third guide plate is inclined to the second guide plate, and the end of the second guide plate facing the center of the circle is triangular.

7. The device for treating marine aquaculture wastewater according to claim 6, characterized in that: The first guide plate and the second guide plate are combined to form a screening guide assembly.

Images