Integrated purification treatment equipment for micro-polluted river channel

Abstract

The utility model discloses micro-polluted riverway purification treatment integrated equipment which comprises a water inlet pipe water distribution pipeline and an air inlet pipe air distribution pipeline which are arranged on an equipment shell, and sponge filler positioned on a bracket supporting net, and a mechanical compression demolding device is arranged on the equipment shell. During normal operation, water feeding and aeration are synchronous, and micro-polluted water of the river channel reacts with the biological membrane attached to the sponge filler in an aerobic environment to remove most pollutants, and then enters a water outlet pipeline. When it is detected that the value of effluent suspended matter rises to a set value, the mechanical compression demolding device is started to compress the sponge filler in a reciprocating mode, and local filler accumulation is avoided. According to the design, the characteristics that the modified polyurethane sponge suspended filler is easy to form a film and compressible are utilized, the mechanical compression film removing device is utilized to extrude the modified polyurethane sponge filler to accelerate falling and updating of a biological film, sludge sinking to the bottom is discharged in time in cooperation with the sludge discharging pipeline, back washing is not needed, and it is guaranteed that the quality of effluent of equipment is stable.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection, in particular to water treatment equipment. Background Art

[0002] The existing biochemical treatment equipment for purifying slightly polluted river water generally includes moving bed biofilm reactor (MBBR) equipment and aerated biological filter (BAF) equipment.

[0003] Moving bed biofilm reactor (MBBR) equipment increases the biomass and biological species in the reactor by adding a certain amount of suspended carriers to the equipment, thereby improving the treatment efficiency of the reactor. The suspended carriers are mostly made of polyethylene, polypropylene and modified materials, with a specific gravity close to that of water, and are mainly cylindrical and spherical. During operation, a higher aeration volume is required, and local packing accumulation is prone to occur, requiring manual cleaning or configuration of a backflush device.

[0004] Aerated biological filter (BAF) equipment is a membrane biological treatment equipment. Microorganisms are attached to the surface of the carrier. When sewage flows through the surface of the carrier, the pollutants are oxidized and decomposed through the adsorption of organic nutrients, the diffusion of oxygen into the biofilm, and the biological oxidation in the biofilm, so that the sewage can be purified. The carrier is a certain amount of granular filter material with a small particle size loaded in the filter tank. The biofilm grows on the surface of the filter material, and the filter tank is aerated. After a certain period of operation, due to the increase in head loss, the filter tank needs to be backwashed to release the trapped suspended matter and renew the biofilm.

[0005] The above equipment are all suitable for the purification of slightly polluted river water, but there are also problems such as slow start-up of filler biofilm, easy local accumulation and the need for a backwash system that affect the treatment effect. At the same time, they occupy a large area, have many system accessories and are complicated to operate. Utility Model Content

[0006] The technical problem solved by the utility model is that the purification treatment equipment for slightly polluted river water has the problems of slow start-up of filler film formation, easy local accumulation and the need to configure a backwash system, which affects the treatment effect.

[0007] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: an integrated equipment for purifying and treating slightly polluted rivers, comprising an equipment shell, a water inlet pipe water distribution pipeline and an air inlet pipe air distribution pipeline arranged on the equipment shell, a bracket support net arranged in the equipment shell, a sponge filler located on the bracket support net, the water inlet pipe water distribution pipeline and the air inlet pipe air distribution pipeline are located below the bracket support net, the water outlet on the equipment shell is located above the sponge filler, and a mechanical compression demolding device is provided on the equipment shell, the mechanical compression demolding device comprises a driving unit located outside the equipment shell, and a lifting and lowering pressure plate connected to the driving unit and located in the equipment shell, and the lifting and lowering pressure plate is located above the sponge filler.

[0008] During normal operation, water intake and aeration are synchronized. The slightly polluted water from the river passes through the water distribution pipeline of the water inlet pipe, the air distribution pipeline of the air inlet pipe, the bracket support net and the sponge filler in turn, and reacts with the biofilm attached to the sponge filler in an aerobic environment to remove most of the pollutants such as COD and ammonia nitrogen, and then enters the water outlet pipeline through the outlet. When the suspended solids value of the outlet water is detected to rise to 30 mg / L or the set value, the water intake is stopped according to the setting, and the mechanical compression and film removal device is started. Its compression stroke can reciprocate within the range of 50%-70% for 5-8 minutes, and the packing layer is churned while compressing and stripping the film to avoid local packing accumulation. After completion, the mechanical compression and film removal device returns to its initial position, and the mud discharge pipe is opened intermittently through the electric valve to discharge mud, completing the biofilm film removal and mud discharge process. Normal operation is resumed afterwards.

[0009] As an option, the sponge filler is a modified polyurethane sponge filler.

[0010] The outlet is designed with an outlet weir and an outlet pipe. The slightly polluted water from the river passes through the water distribution layer, aeration layer, bracket support net and modified polyurethane sponge filler in sequence, and reacts with the biofilm attached to the modified polyurethane sponge filler in an aerobic environment to remove most of the pollutants such as COD and ammonia nitrogen, and then enters the outlet pipe through the outlet weir.

[0011] The equipment shell is provided with a mud discharge pipe, which is located below the bracket support net. After the compression demoulding is completed, the mechanical compression demoulding device returns to its initial position, and the mud discharge pipe is opened intermittently through the electric valve to discharge mud, completing the biofilm demoulding and mud discharge process. After that, normal operation is resumed.

[0012] A manhole is provided on the top of the equipment casing to allow access to the interior of the equipment casing, through which workers can enter the interior of the equipment casing for inspection and maintenance.

[0013] The driving unit includes a motor installed on the device housing, a transmission shaft connected to the motor, a driving gear installed on the transmission shaft, a driven gear pivoted on the device housing, and a screw threadedly connected to the driven gear. The screw can penetrate into the device housing and connect to the lifting and compressing plate. A threaded hole is provided in the center of the driving gear. The motor drives the transmission shaft, the transmission shaft drives the driving gear, the driving gear drives the driven gear, the driven gear drives the screw to move up and down through the threaded hole, and the screw drives the lifting and compressing plate. The number of screws is a pair, and the bottom is connected to the lifting and compressing plate at the same time.

[0014] The utility model can effectively remove pollutants such as COD, ammonia nitrogen, total phosphorus, and SS in the river. The suspended filler in the equipment adopts a modified polyurethane sponge block suspended filler. The modified polyurethane sponge filler has the function of filtering and intercepting the suspended matter in the incoming water while providing a microbial biofilm carrier. Taking advantage of the characteristics of the modified polyurethane sponge suspended filler that is easy to form a biofilm and can be compressed, a mechanical compression and film removal device is configured in the equipment. When the suspended matter in the effluent increases, the mechanical compression and film removal device is used to squeeze the modified polyurethane sponge filler to accelerate the shedding and renewal of the biofilm, and cooperate with the sludge discharge pipeline to discharge the bottom sludge in time, without the need for backwashing, to ensure the stability of the effluent water quality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of an integrated device for purifying and treating a slightly polluted river;

[0017] Figure 2 This is an overhead view of the integrated equipment for purifying and treating slightly polluted rivers.

[0018] Explanation of symbols in the figure:

[0019] 10. Water inlet pipe and water distribution line;

[0020] 20. Air inlet pipe gas distribution line;

[0021] 30. Sponge filler; 31. Bracket support net;

[0022] 40. Mechanical compression demolding device; 41. Lifting and lowering plate; 42. Motor; 43. Transmission shaft; 44. Driving gear; 45. Driven gear; 46. Screw;

[0023] 50. water outlet pipe; 51. water outlet weir;

[0024] 60. Mud discharge pipe;

[0025] 70. Manhole;

[0026] 80. Discharge port. DETAILED DESCRIPTION

[0027] Combination Figure 1 , Figure 2 , an integrated device for purifying and treating a slightly polluted river, comprising a device shell, a water inlet pipe water distribution pipeline 10 and an air inlet pipe air distribution pipeline 20 arranged on the device shell, a bracket support net 31 arranged in the device shell, a sponge filler 30 located on the bracket support net, the water inlet pipe water distribution pipeline and the air inlet pipe air distribution pipeline are located below the bracket support net, the water outlet on the device shell is located above the sponge filler, a mechanical compression demolding device 40 is provided on the device shell, the mechanical compression demolding device comprises a driving unit located outside the device shell, and a lifting and lowering pressure plate 41 connected to the driving unit and located in the device shell, the lifting and lowering pressure plate is located above the sponge filler.

[0028] The dimensions of the equipment housing are 3200mm long*3200mm wide*3200mm high.

[0029] The sponge filler 30 is a modified polyurethane sponge filler.

[0030] The water outlet is matched with a water outlet weir 51 and a water outlet pipe 50.

[0031] A mud discharge pipe 60 is provided on the equipment housing and is located below the bracket support net 31 .

[0032] During normal operation, water intake and aeration are carried out synchronously. The slightly polluted water from the river passes through the water inlet pipe distribution pipeline 10 and the air inlet pipe distribution pipeline 20, the bracket support net 31 and the modified polyurethane sponge filler in turn, and reacts with the biofilm attached to the modified polyurethane sponge filler in an aerobic environment to remove most of the pollutants such as COD and ammonia nitrogen, and then enters the water outlet pipeline through the water outlet weir 51. When it is detected that the suspended solids value of the outlet water rises to 30 mg / L or the set value, the water intake is stopped according to the setting, and the mechanical compression demolding device 40 is started. Its compression stroke can reciprocate within the range of 50%-70% for 5-8 minutes, and the packing layer is churned while compressing and demolding to avoid local packing accumulation. After completion, the mechanical compression demolding device 40 returns to its initial position, and the mud discharge pipe 60 is intermittently opened through the electric valve to discharge mud, completing the biofilm demolding and mud discharge process. Normal operation is then resumed.

[0033] A manhole 70 is provided on the top of the equipment housing for workers to enter the interior of the equipment housing.

[0034] The driving unit includes a motor 42 mounted on the device housing, a transmission shaft 43 connected to the motor, a driving gear 44 mounted on the transmission shaft, a driven gear 45 pivotally connected to the device housing, and a screw 46 threadedly connected to the driven gear, the screw being able to penetrate into the device housing and connected to the lifting and compressing plate 41. A threaded hole is provided in the center of the driving gear 44, the motor 42 drives the transmission shaft 43, the transmission shaft drives the driving gear 44, the driving gear drives the driven gear 45, the driven gear drives the screw 46 to rise and fall through the threaded hole, and the screw drives the lifting and compressing plate 41. Among them, the number of screws 46 is a pair, and the bottom is connected to the lifting and compressing plate 41 at the same time.

[0035] This equipment can be used in parallel in multiple groups according to the amount of water to be treated.

[0036] The above contents are only preferred implementation modes of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation mode and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. An integrated device for purifying and treating a micro-polluted river, comprising a device housing, a water inlet pipe water distribution pipeline (10) and an air inlet pipe air distribution pipeline (20) arranged on the device housing, a bracket support net (31) arranged in the device housing, a sponge filler (30) located on the bracket support net, the water inlet pipe water distribution pipeline and the air inlet pipe air distribution pipeline are located below the bracket support net, and a water outlet on the device housing is located above the sponge filler, characterized in that: A mechanical compression demolding device (40) is provided on the device housing, and the mechanical compression demolding device comprises a driving unit located outside the device housing, and a lifting and lowering pressure plate (41) connected to the driving unit and located inside the device housing, wherein the lifting and lowering pressure plate is located above the sponge filler.

2. The integrated equipment for purifying and treating slightly polluted rivers according to claim 1, characterized in that: The sponge filler (30) is a modified polyurethane sponge filler.

3. The integrated equipment for purifying and treating slightly polluted rivers according to claim 1, characterized in that: The water outlet is matched with a water outlet weir (51) and a water outlet pipe (50).

4. The integrated equipment for purifying and treating slightly polluted rivers according to claim 1, characterized in that: A mud discharge pipe (60) is provided on the equipment housing and is located below the bracket support net (31).

5. The integrated equipment for purifying and treating slightly polluted rivers according to claim 1, characterized in that: A manhole (70) is provided on the top of the device housing for entering the interior of the device housing.

6. The integrated equipment for purifying and treating slightly polluted rivers according to claim 1, characterized in that: The driving unit comprises a motor (42) mounted on the device housing, a transmission shaft (43) connected to the motor, a driving gear (44) mounted on the transmission shaft, a driven gear (45) pivotally connected to the device housing, and a screw rod (46) threadedly connected to the driven gear, wherein the screw rod can penetrate into the device housing and be connected to the lifting and lowering plate (41).

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