CN212403649U

CN212403649U - Improvement type biochemical sewage treatment device that floats

Info

Publication number: CN212403649U
Application number: CN202021585368.6U
Authority: CN
Inventors: 马莉; 佟镇; 秦红科
Original assignee: Lingnan Water Group Co ltd
Current assignee: Lingnan Water Group Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-01-26
Anticipated expiration: 2030-08-03

Abstract

The utility model relates to an improved floating biochemical sewage treatment equipment, comprising a water inlet distribution channel, an anoxic reaction zone, an aerobic reaction zone, an internal return equipment zone, a water outlet zone and a valve well, and the water inlet distribution channel serves as an anaerobic reaction zone , the water inlet pipe and the return sludge pipe are respectively connected with the water inlet distribution channel, and the water inlet distribution channel is connected with the anoxic reaction zone through the gate. The aerobic reaction area is connected with the internal return equipment area through the water hole, the internal return equipment area is connected with the water outlet area through the gate, and the water outlet area is connected with the water outlet pipe. The beneficial effects are: because the wing-shaped filler is arranged in the aerobic tank, the concentration of activated sludge is increased, the microbial population is abundant, the volume load is high, the impact load resistance is strong, and the sewage treatment efficiency is improved. .

Description

Improvement type biochemical sewage treatment device that floats

Technical Field

The utility model relates to a sewage treatment field, in particular to biochemical sewage treatment device that improves type floats.

Background

In 2015, 16

days

4 and 16, the action plan for preventing and treating water pollution requires strengthening urban living pollution control. Accelerating the construction and the reconstruction of urban sewage treatment facilities. The existing urban sewage treatment facilities need to be modified according to local conditions, and reach the corresponding discharge standard or recycling requirement before 2020. The urban sewage treatment facilities in sensitive areas (key lakes, key reservoirs and coastal waters catchment areas) fully reach the first-class A discharge standard before the end of 2017. And in cities where the water quality of the water body of the built-up area can not reach the IV-class standard of surface water, a first-level A discharge standard is required to be implemented by newly-built urban sewage treatment facilities.

According to the requirements of the novel urbanization planning of China, all county cities and key towns in China have sewage collection and treatment capacity in 2020, and the sewage treatment rates of the county cities and the key towns respectively reach about 85% and 95%.

However, the adoption of the urban sewage treatment facility has the problems of high investment, high power consumption and high operating cost, and is not suitable for the development status of small towns and rural areas in China; in addition, the buried integrated sewage treatment equipment developed in early domestic causes low treatment efficiency and poor effect due to imperfect treatment process and technology, and cannot meet the increasingly strict effluent quality index of China; in addition, the buried type is complicated in construction and difficult in maintenance, so that the buried type is mostly abandoned.

Therefore, aiming at the above requirements of strengthening urban domestic sewage treatment, the utility model provides an improved floating biochemical sewage treatment device which integrates an activated sludge method and a biofilm method, which is the innovation of the utility model.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art, provide a collectionAn improved floating biochemical sewage treatment device combining an activated sludge method and a biofilm method. A/O, A can also be realized by adjusting sludge reflux²Function conversion of/O.

The utility model provides an improvement type biochemical sewage treatment device that floats, its technical scheme is:

an improved floating biochemical sewage treatment device comprises a water inlet distribution channel, an anoxic reaction zone, an aerobic reaction zone, an internal reflux equipment zone, a water outlet zone and a valve well, the water inlet distribution channel can be used as an anaerobic reaction zone, the water inlet pipe and the return sludge pipe are respectively connected with the water inlet distribution channel, the water inlet distribution channel is connected with an anoxic reaction zone through a gate, the anoxic reaction zone is provided with a submersible stirrer, the anoxic reaction zone is connected with the aerobic reaction zone through a water passing hole, the aerobic reaction zone is connected with the internal reflux equipment zone through a water passing hole, the internal reflux equipment area is connected with the water outlet area through a gate, the water outlet area is connected with a water outlet pipe, the internal reflux equipment zone is connected with the valve well through a pipeline, the valve well is connected with the water inlet distribution channel through an internal reflux pipe, and an aerator is arranged in the aerobic reaction zone.

Preferably, the aerobic reaction zone is provided with a blow-down pipe.

Preferably, the aerator is a tubular mesoporous aerator or a disc aerator; the aerator is externally connected with an air pipeline.

Preferably, wing-shaped filler carriers which are lyophilic to microorganisms are arranged in the aerobic reaction zone.

Preferably, the aerobic reaction zone is provided with a plurality of unit tanks, and the reaction is more fully performed under the action of the aerator.

Preferably, the internal reflux equipment area is provided with an internal reflux pump.

Preferably, the anoxic reaction zone, the aerobic reaction zone, the internal reflux equipment zone, the water outlet zone and the valve well are divided into two reaction zones which are symmetrically arranged.

Preferably, the material of the winged filler carrier is PE.

Preferably, the internal recirculation zone is provided with a movable weir plate.

The utility model discloses an implement including following technological effect:

1. the wing-shaped filler is arranged in the aerobic tank, so that the concentration of activated sludge is increased, the microbial population is rich, the volume load is high, the impact load resistance is strong, a primary sedimentation tank is not required, and the occupied area is small; with the conventional AO process and A²Compared with the O method, the concentration of the activated sludge is increased from 2500-4500 mg/L to 4500-5500 mg/L.

2. The reaction tank is of a plug flow type, a plurality of grids are arranged, the operation parameters of each grid can be adjusted according to the actual working condition, and the high efficiency and the energy saving are realized;

3. can have both A/O method and A²The characteristics and advantages of the process of the O method are that the effect of nitrogen and phosphorus removal is achieved;

4. the biological carrier of the wing-shaped filler has high air speed, more blades and small resistance; the specific surface area is large.

5. The aerator has more varieties, low cost and no technical obstacle; the tube type aerator or the disc type aerator can be adopted according to actual conditions.

6. Simple flow, low reflux ratio, low construction cost and low operation cost.

Drawings

FIG. 1 is a schematic plan view of an improved floating biochemical sewage treatment device according to an embodiment of the present invention.

Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.

Fig. 3 is a schematic sectional view taken along line B-B of fig. 1.

In the figure: 1. a water inlet distribution channel; 2. an anoxic reaction zone; 3. an aerobic reaction zone; 4. an internal reflux equipment zone; 5. a water outlet area; 6. a valve well; 7. a water inlet pipe; 8. a return sludge pipe; 9. a gate; 10. a submersible mixer; 11. an aerator; 12. an air duct; 13. an inner return pipe; 14. an emptying pipe; 15. an internal reflux pump; 16. winged filler; 17. a water outlet pipe; 18. a movable weir plate.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and the accompanying drawings, wherein the described embodiments are only intended to facilitate the understanding of the present invention, and do not limit the present invention in any way.

Referring to fig. 1 to 3, the present embodiment provides an improved floating biochemical sewage treatment device, which includes a water inlet distribution channel 1 (anaerobic reaction zone), an anoxic reaction zone 2, an aerobic reaction zone 3, an internal reflux device zone 4, a water outlet zone 5 and a valve well 6, wherein the water inlet distribution channel 1 can be used as an anaerobic reaction zone, a water inlet pipe 7 and a reflux sludge pipe 8 are respectively connected to the water inlet distribution channel 1, the water inlet distribution channel 1 is connected to the anoxic reaction zone 2 through a gate 9, the anoxic reaction zone 2 is provided with a submersible stirrer 10, the anoxic reaction zone 2 is connected to the aerobic reaction zone 3 through a water through hole, the aerobic reaction zone 3 is connected to the internal reflux device zone 4 through a water through hole, the internal reflux device zone 4 is connected to the water outlet zone 5 through a gate 9, the water outlet zone 5 is connected to a water outlet pipe 17, the internal reflux device zone 4 is connected to the valve well 6 through a pipeline, the valve well 6 is connected to the water inlet distribution channel 1 through an internal return pipe 13, and an aerator 11 is arranged in the aerobic reaction zone 3. Further, the aerobic reaction zone 3 is provided with a blow-down pipe 14. The aerator 11 is externally connected with an air pipeline 12, and the aerator 11 has a plurality of varieties, low cost and no technical obstacle; the tube type aerator or the disc type aerator can be adopted according to actual conditions. The aerobic reaction zone 3 is provided with a carrier of wing-shaped filler 16 which is compatible with microorganism, the biological carrier of the wing-shaped filler 16 has high gas velocity, more blades and small resistance; the specific surface area is large. The wing-shaped filler 16 is arranged in the aerobic tank, so that the concentration of activated sludge is increased, the microbial population is rich, the volume load is high, the impact load resistance is strong, a primary sedimentation tank is not required, and the occupied area is small; with the conventional AO process and A²Compared with the O method, the concentration of the activated sludge is increased from 2500-4500 mg/L to 4500-5500 mg/L. The aerobic reaction zone 3 is provided with a plurality of unit tanks, and the reaction is more sufficient under the action of an aerator. The reaction tank is of a plug flow type, a plurality of grids are arranged, the operation parameters of each grid can be adjusted according to the actual working condition, and the high efficiency and the energy saving are realized;

referring to fig. 3, the internal reflux equipment zone 4 is provided with an internal reflux pump 15. The internal recirculation zone is provided with a movable weir plate 18. Referring to fig. 1, the anoxic reaction zone 2, the aerobic reaction zone 3, the internal reflux equipment zone 4, the water outlet zone 5 and the valve well 6 are divided into two reaction zones which are symmetrically arranged and are respectively controlled.

The improved floating biochemical sewage treatment equipment of the utility model can have the A/O method and the A²The characteristics and advantages of the process of the O method are that the effect of nitrogen and phosphorus removal is achieved; simple flow, low reflux ratio, low construction cost and low operation cost.

The improved floating biochemical technology can reach the following standards:

1. concentration of activated sludge: 4500-5500 mg/L.

2. The gas-water ratio of the aerobic reaction zone 3 is 6-7: 1, so that the aeration rate is reduced.

3. The material PE of the wing-shaped filler 16 is 25-30% of the filling ratio.

4. The removal rates of the pollutants are respectively CODcr: 85% -95%, BOD₅:90％～95％，SS：70～80％。NH₃-N：85％～95％。

The embodiment also provides an improved floating biochemical sewage treatment method, which comprises the following steps:

1) the raw sewage enters the water inlet distribution channel 1 to regulate the water quality, and the water inlet distribution channel 1 is converted into an anaerobic reaction zone by regulating the switch of a return sludge pump, and the A/O process is changed into A²the/O process is converted to complete biological phosphorus removal; the outlet of the water inlet channel is provided with a gate 9 for controlling the water inlet unit;

2) sewage enters the anoxic reaction zone 2 from the water inlet distribution channel 1 through the gate 9 and is stirred by the submersible stirrer 10, so that the stirring function is enhanced, and sludge precipitation is prevented; the sewage completes denitrification reaction in the anoxic reaction zone 2 to remove the total nitrogen in the sewage;

3) the sewage enters an aerobic reaction tank subsequently to carry out organic matter removal and nitration reaction, the tank is divided into a plurality of units according to the water flow direction, each unit tank is added with a winged filler 16 carrier which is compatible with microorganisms according to the volume ratio, the bottom of the tank is provided with a tubular mesoporous aerator or a disc aerator, the sewage flows from one end of the system to the other end, the aeration intensity of each unit tank is adjustable, due to the addition of the carrier, on one hand, the stirring function is enhanced, on the other hand, the population and the quantity of the sludge are increased, and by adjusting the aeration intensity and the internal reflux quantity, various impact loads can be resisted, and the sewage treatment effect is improved;

4) sewage enters an internal reflux device zone 4 from an aerobic reaction zone 3, an internal reflux pump 15 is arranged in the zone, and the reflux amount is adjusted according to the arrangement of a unit pool; the valve well 6 is used for placing a valve of the inner return pipe 13;

5) the sewage which reaches the standard after treatment enters a water outlet area 5 for discharge.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides an improvement type biochemical sewage treatment device that floats, includes into water distribution channel, oxygen deficiency reaction zone, good oxygen reaction zone, interior backflow device district, play pool and valve well, its characterized in that: the distribution canal of intaking is as anaerobic reaction district, and inlet tube and return sludge pipe are connected with the distribution canal of intaking respectively, the distribution canal of intaking passes through the gate and is connected with the oxygen deficiency reaction district, the oxygen deficiency reaction district sets up dive agitator, the oxygen deficiency reaction district is connected with aerobic reaction district through crossing the water hole, aerobic reaction district through cross the water hole with interior reflux equipment district connects, interior reflux equipment district pass through the gate with it connects to go out the water zone, go out water zone and play water piping connection, interior reflux equipment district pass through the pipeline with the valve well is connected, the valve well is connected to the distribution canal of intaking through interior back flow, be provided with the aerator in the aerobic reaction district.

2. The improved floating biochemical sewage treatment device of claim 1, wherein: the aerobic reaction zone is provided with a blow-down pipe.

3. The improved floating biochemical sewage treatment device of claim 1, wherein: the aerator is a tubular type mesoporous aerator or a disc type aerator; the aerator is externally connected with an air pipeline.

4. The improved floating biochemical sewage treatment device of claim 1, wherein: and a wing-shaped filler carrier which is philic to microorganisms is arranged in the aerobic reaction zone.

5. The improved floating biochemical sewage treatment device of claim 1, wherein: the aerobic reaction zone is provided with a plurality of unit tanks, and the reaction is more sufficient under the action of an aerator.

6. The improved floating biochemical sewage treatment device of claim 1, wherein: the internal reflux equipment area is provided with an internal reflux pump.

7. The improved floating biochemical sewage treatment device of claim 1, wherein: the anoxic reaction zone, the aerobic reaction zone, the internal reflux equipment zone, the water outlet zone and the valve well are divided into two reaction zones which are symmetrically arranged.

8. The improved floating biochemical sewage treatment device of claim 4, wherein: the material of the wing-shaped filler carrier is PE.

9. The improved floating biochemical sewage treatment device of claim 1, wherein: the internal reflux area is provided with a movable weir plate.