CN215855323U

CN215855323U - Efficient bioreactor special-effect carrier interception system

Info

Publication number: CN215855323U
Application number: CN202121832929.2U
Authority: CN
Inventors: 刘峰; 朱海林; 潘兆宇; 贾馨; 王晓龙; 吴玉波
Original assignee: Tianjin Dexin Petrochemical Equipment Co ltd
Current assignee: Tianjin Dexin Petrochemical Equipment Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-02-18
Anticipated expiration: 2031-08-06

Abstract

The utility model discloses a special-effect carrier interception system of a high-efficiency bioreactor, which comprises a reaction tank, a drainage tank and a water production tank, wherein a carrier filtering grid is arranged at the water outlet end of the reaction tank, a liquid level detection module is arranged at the carrier filtering grid, and a backflushing module is arranged at the drainage tank; the liquid level detection module is connected with the control module, and the control module is connected with the control end of the backflushing module and the water inlet valve control end of the water inlet end of the reaction tank. The utility model improves the reliability of system operation, reduces the labor intensity of workers, reduces the economic loss caused by the loss of special-effect carriers, and is particularly suitable for technical transformation and upgrading of the conventional ABR system.

Description

Efficient bioreactor special-effect carrier interception system

Technical Field

The utility model belongs to the technical field of industrial wastewater treatment, relates to improvement of an ABR structure, and particularly relates to a specific carrier interception system of a high-efficiency bioreactor.

Background

An ABR (advanced Biological reactor) high-efficiency bioreactor is a world-latest aerobic bioreactor for removing organic matters which are extremely difficult to degrade in sewage, the main removal index is COD, and the high-efficiency bioreactor has extremely high tolerance to pollutants such as high salt and the like and is suitable for the advanced treatment of sewage. The method has excellent efficiency and water quality, conforms to the requirements of sewage standard improvement, quality improvement and efficiency improvement, and can be popularized in the medium petrochemical range. ABR has the following characteristics: starting the system at an ultra-fast speed, and culturing and acclimating the system for 7-10 days to allow production water to flow through; excellent stability, high salt resistance, sterilization resistance and impact resistance; the method has the advantages of ultralow operation and maintenance cost, no need of regular supplement of specific flora, high-efficiency carrier supplement amount lower than 2%/year, compact layout, no oxidation and adsorption units and small occupied area.

With the construction and commissioning of ABRs, the following problems were found to exist: 1. reaction tank 1 goes out water end 9 and is provided with rectangular carrier filtration grid 3, nevertheless uses the back for a long time, the condition that carrier filtration grid blockked up can appear, needs the frequent patrol and examine of staff among the prior art, leads to manpower resources's waste, sometimes can not in time discover the problem moreover, leads to sewage overflow to the drainage pond 5 in, makes the pollutant increase in the drainage. 2. In the prior art, the carrier filtering grid needs to be periodically detached and cleaned, so that the sewage treatment efficiency is reduced, and the labor intensity of workers is increased. 3. In the ABR system, the specific carrier is the most important component, and the supplement amount is 2% per year theoretically, but the running-off of the specific carrier caused by sewage overflow and the like can increase the operation cost of a sewage treatment plant and also reduce the quality of sewage treatment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a special-effect carrier intercepting system of a high-efficiency bioreactor, which solves the problem of blockage of a carrier filter grid by utilizing a structure of combining automatic liquid level detection and back flushing and reduces the loss of special-effect carriers by a plurality of intercepting structures.

The technical scheme adopted by the utility model for solving the technical problem is as follows:

the utility model provides a high-efficient bioreactor special effect carrier interception system, includes reaction tank, drainage pond and produces the pond, is provided with carrier filter grid, its characterized in that at reaction tank play water end: a liquid level detection module is arranged at the carrier filtering grid mesh, and a backflushing module is arranged at the drainage pool;

the liquid level detection module is connected with the control module, and the control module is connected with the control end of the backflushing module and the water inlet valve control end of the water inlet end of the reaction tank.

Furthermore, the liquid level detection module adopts a liquid level signal detection mode or a continuous liquid level detection mode.

Furthermore, the liquid level detection module uses a laser liquid level sensor, an ultrasonic liquid level sensor, a photoelectric refraction type liquid level sensor, a capacitance type liquid level sensor or a floating ball type liquid level sensor.

And the backflushing module comprises a water inlet pipe and spray heads, the water inlet pipe is aligned to the side of the carrier filtering grid close to the surface of one side of the drainage pool, and a plurality of spray heads are arranged on the water inlet pipe at intervals.

Furthermore, the spray head is arranged obliquely upwards.

Furthermore, the included angle between the spray head and the vertical direction is 20-50 degrees.

Furthermore, the spacing distance between the spray heads is 100 mm and 300 mm.

Furthermore, an intercepting filter screen is arranged in the drainage pool.

Furthermore, the water inlet end of the water producing pool is provided with an intercepting filter screen.

The utility model has the technical effects that:

according to the utility model, the liquid level detection module is arranged at the carrier filter grid, the current water level in the reaction tank is automatically detected through the liquid level detection module, when the water level exceeds a preset value, the water inlet valve of the reaction tank is automatically stopped, the backflushing module works after the liquid level is reduced, substances attached to the carrier filter grid and blocked by the carrier filter grid are washed down, the carrier filter grid is recovered to normally work, the flow speed of water in the drainage tank is relatively slow, the special-effect carrier can effectively intercept the special-effect carrier, and the interception filter screen arranged at the water inlet end of the water production tank can further intercept the special-effect carrier. Through the mutual cooperation of the structures, the reliability of system operation is improved, the labor intensity of workers is reduced, the economic loss caused by the loss of the special-effect carrier is reduced, and the ABR system is particularly suitable for technical transformation and upgrading of the conventional ABR system.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view at the upper right corner of fig. 1.

Fig. 3 is a schematic structural view of an intercepting screen in a drain tank.

Fig. 4 is another structure view of the intercepting screen in the drain tank.

Fig. 5 is a schematic structural view of an intercepting screen in the water producing tank.

Fig. 6 is a right side view of fig. 5.

Detailed Description

The present invention is further illustrated by the following specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the utility model.

The utility model discloses a specific carrier interception system of a high-efficiency bioreactor, which comprises a reaction tank 1, a drainage tank 5 and a water production tank 10, wherein a carrier filtering grid 3 is arranged at a water outlet end 9 of the reaction tank, and the carrier filtering grid is innovative in that: the carrier filtering grid net is provided with a liquid level detection module 2, and the drainage pool is provided with a backflushing module 4. The liquid level detection module is connected with the control module, and the control module is connected with the control end of the backflushing module and the water inlet valve control end of the water inlet end of the reaction tank.

The liquid level detection module is arranged right above the carrier filtering grid or beside the surface of one side of the carrier filtering grid, which is close to the reaction tank. The liquid level detection module adopts a liquid level signal detection mode or a continuous liquid level detection mode. The former realizes the detection of high-level alarm water level and low-level alarm water level, and the latter can realize the detection of continuous water level change, and the latter is preferably adopted. The more optional scheme is as follows: the liquid level detection module uses a laser liquid level sensor, an ultrasonic liquid level sensor, a photoelectric refraction type liquid level sensor, a capacitance type liquid level sensor or a floating ball type liquid level sensor. The most preferred embodiment is: the liquid level detection module takes an ultrasonic liquid level sensor as a core.

The recoil module includes inlet tube 12 and shower nozzle 11, and the inlet tube adopts the 316L material to the high quality of water that contains salt of reply, the setting of inlet tube counterpoint is close to the side of drainage pond side surface at the carrier filter grid, and the interval sets up a plurality of shower nozzles on the inlet tube. The preferred location for the water inlet pipe is in alignment with the lower end of the carrier filter screen and the spray head is positioned obliquely upward as shown in fig. 2. The preferred scheme is as follows: the included angle between the spray head and the vertical direction is 20-50 degrees, and the spacing distance between the spray head and the spray head is 100-300 mm. In order to improve the washing effect, the included angle between each spray head and the vertical direction can be different so that the sprayed high-pressure water can completely cover the surface of the carrier filter grid.

The control module can use a PLC (programmable logic controller), receives an output signal of the ultrasonic liquid level sensor, and controls the opening of the water inlet valve of the reaction tank and the action state of the backflushing module.

The linkage process of liquid level detection and backflushing is as follows:

1. the liquid level detection module automatically detects the liquid level height of the reaction tank at a certain moment, the PLC receives the liquid level height signal and compares the liquid level height signal, when the liquid level height exceeds a preset warning value, the PLC sends a sound warning signal, a flash warning signal or a screen display warning signal to the control center, and meanwhile, the PLC outputs a control instruction to reduce or close a water inlet valve of the reaction tank.

2. The liquid level detection module continues to detect the liquid level height of the reaction tank, when the liquid level height is reduced to be below the bottom of the carrier filtering grid, the PLC starts the backflushing module, the carrier filtering grid is backflushed by high-pressure water sprayed by the spray head, the water pressure is 0.5-0.8 MPa, and the flushing time is 3-10 minutes. During back flushing, the drain valve at the bottom of the drain pool is opened, and the structure is the prior art and is not described in detail.

3. And after the back washing is finished, the PLC controls the back washing module to stop and starts a water inlet valve of the reaction tank.

The liquid level detection and the back washing process are automatically finished without manual operation. And the loss of the special-effect carrier caused by sewage overflow after the carrier filtering grid is blocked is avoided.

In order to further reduce the loss of the special-effect carrier, an interception filter screen 8 is arranged in the drainage pool, and an interception filter screen 7 is arranged at the water inlet end 6 of the water production pool. The two interception filter screens have different structures, and the specific structures are respectively explained.

1. Interception filter screen in drainage pool

As shown in figure 3, the intercepting filter screen can be a cylindrical structure, a supporting framework is formed by an angle iron framework 15, then the filter screen is respectively arranged on the outer circumference and two ends of the framework, the filter screen is made of 316L materials, the filter hole position is 10-30 meshes, and the aperture benefit is 1 mm. The intercepting filter screen is fixed at the bottom of the drainage pool through bolts.

As shown in fig. 4, the intercepting screen may also be made in a rectangular structure, which is also a supporting frame formed by an angle iron frame 15, and then the screen is installed outside the frame.

In any structure, when water in the reaction tank flows into the drainage tank through the carrier filtering grid, the special-effect carrier can be attached to the surface of the intercepting filter screen due to the fact that the water flow speed at the position is low, and after the reaction tank works for a period of time, a worker replaces the new intercepting filter screen and cleans the replaced special-effect carrier on the surface of the intercepting filter screen and puts the carrier into the reaction tank again.

2. Interception filter screen in water production tank

As shown in figures 5-6, the hanging basket comprises a hanging hook 13 and a hanging basket 14, wherein the hanging basket takes an angle iron framework as a supporting framework, a filter screen is arranged on the outer surface of the hanging basket, the filter screen is made of 316L materials, the filter hole position is 10-30 meshes, and the aperture benefit is 1 mm.

Lifting hooks are arranged on two sides of the hanging basket respectively and used for hooking the canal arms at the water inlet ends of the water producing ponds. When water in the drainage pond flows to the water production pond, the water flows in from the opening at the upper end of the hanging basket, the special-effect carrier in the water can be attached to the inner wall of the hanging basket, after the water production pond works for a period of time, a worker replaces the hanging basket with a new hanging basket, and the special-effect carrier on the inner wall of the replaced hanging basket is cleaned and put into the reaction pond again.

According to the above contents, the liquid level detection and the back flushing avoid the problem of overflow loss of the special-effect carrier caused by blockage of the carrier filtering grid, and the two intercepting filter screens at the drainage pool and the water production pool intercept and recover the lost special-effect carrier. Through a comparison test of an ABR system in a certain place, the loss of the specific carrier can be greatly reduced. The method comprises the following steps: the ABR special-effect carrier replenishment rate of the first-stage equipment system of the control group is 10%, and the ABR special-effect carrier replenishment rate of the second-stage equipment system of the experimental group is compared by the first-stage equipment system, so that 80-90% is reduced, and the economic loss caused by the loss of the special-effect carrier is greatly reduced.

Claims

1. The utility model provides a high-efficient bioreactor special effect carrier interception system, includes reaction tank, drainage pond and produces the pond, is provided with carrier filter grid, its characterized in that at reaction tank play water end: a liquid level detection module is arranged at the carrier filtering grid mesh, and a backflushing module is arranged at the drainage pool;

2. The efficient bioreactor specific vector interception system of claim 1, wherein: the liquid level detection module adopts a liquid level signal detection mode or a continuous liquid level detection mode.

3. The efficient bioreactor specific vector interception system of claim 1, wherein: the liquid level detection module uses a laser liquid level sensor, an ultrasonic liquid level sensor, a photoelectric refraction type liquid level sensor, a capacitance type liquid level sensor or a floating ball type liquid level sensor.

4. The efficient bioreactor specific vector interception system of claim 1, 2 or 3 wherein: the backflushing module comprises a water inlet pipe and spray heads, the water inlet pipe is arranged at the side, close to the surface of one side of the drainage pool, of the carrier filtering grid net in an aligned mode, and the spray heads are arranged on the water inlet pipe at intervals.

5. The efficient bioreactor specific vector interception system of claim 4, wherein: the spray head is arranged obliquely upwards.

6. The efficient bioreactor specific vector interception system of claim 5, wherein: the included angle between the spray head and the vertical direction is 20-50 degrees.

7. The efficient bioreactor specific vector interception system of claim 5 or 6, wherein: the spacing distance between the spray heads is 100-300 mm.

8. The efficient bioreactor specific vector interception system of claim 5 or 6, wherein: and an intercepting filter screen is arranged in the drainage pool.

9. The efficient bioreactor specific vector interception system of claim 8, wherein: the water inlet end of the water producing tank is provided with an intercepting filter screen.