CN104961232A - Vertical integral sewage treatment plant - Google Patents

Abstract

The invention relates to a vertical integrated sewage treatment device, which includes an anaerobic zone, an aerobic zone and a sedimentation zone; the three zones are a nested combination structure of three sleeves, wherein the sedimentation zone is outside, and the aerobic zone is outside. The area is in the middle, and the anaerobic area is included; the sewage flows into the anaerobic area through the water inlet pipe, mixes with the activated sludge in the anaerobic area for anaerobic degradation, and flows into the aerobic area through the top of the anaerobic area through overflow; the aerobic area and The top of the anaerobic zone is equipped with a three-phase separator for gas-liquid separation, and the gas generated is discharged from the system through the exhaust pipe; the lower part of the aerobic zone is equipped with an aeration device to realize the aerobic degradation of sewage; the bottom of the aerobic zone and the sedimentation zone In the same way, the sewage after aeration treatment enters the sedimentation area from the bottom of the aerobic area and moves upward, while the sludge enters the sludge accumulation area downwards to realize solid-liquid separation; there is an annular catchment area on the top of the sedimentation area, and the annular water collection area It is connected with the outlet pipe, and the treated supernatant water flows out through the outlet pipe.

Description

A vertical integrated sewage treatment device

technical field

The invention relates to an integrated device suitable for rural scattered sewage treatment, which belongs to the field of environmental protection.

Background technique

With the development of the economy, the widespread use of pesticides and chemical fertilizers and the increase in the discharge of rural domestic sewage, a large amount of nitrogen and other biological nutrients are continuously discharged into rivers and lakes, which accelerates the degree of eutrophication of water bodies. At present, my country's rural sewage discharge is large and the effective treatment rate of sewage is low. The water area is seriously polluted, and the treatment is difficult to meet the national standard.

Although our country has taken a lot of measures to solve the problem of rural water pollution, there are still some problems in terms of technical equipment, such as high infrastructure construction cost and operating cost, and treatment efficiency needs to be improved. my country's rural sewage treatment equipment still has shortcomings such as low efficiency, high energy consumption, high maintenance rate, and low degree of automation. Although with the accelerated pace of reform and opening up, my country has also introduced some foreign equipment, but the price of these equipment is very expensive, which is not conducive to the development of my country's rural sewage treatment equipment manufacturing industry. The invention has the advantages of low cost, simplicity and effectiveness, high degree of automation, and is suitable for scattered households in rural areas.

Contents of the invention

The technical problem to be solved by the invention is to provide a simple, effective and easy-to-operate rural sewage treatment system.

The technical scheme that the present invention adopts for solving the above-mentioned technical problems is: a kind of vertical integrated sewage treatment device, and device comprises anaerobic zone, aerobic zone and sedimentation zone; Described three zones are that three sleeves are nested mutually Combined structure, in which, from the outside to the inside, the sedimentation zone, aerobic zone and anaerobic zone are set in sequence; the sewage flows in from the bottom of the anaerobic zone through the water inlet pipe, and is mixed with the activated sludge in the anaerobic zone for anaerobic degradation, and through the overflow The method flows into the aerobic area through the top of the anaerobic area; the aerobic area and the top of the anaerobic area are equipped with a three-phase separator for gas-liquid separation, and the generated gas is discharged from the system through the exhaust pipe; the lower part of the aerobic area is equipped with an aeration device The aerobic area is connected to the bottom of the sedimentation area; the top of the sedimentation area is provided with an annular water collection area, which is connected to the outlet pipe; the bottom of the sedimentation area is a sludge accumulation area.

Further, the anaerobic zone is a channel connecting up and down, the upper end of the channel communicates with the aerobic zone, and the lower end of the channel communicates with the sludge accumulation area through a sludge anti-recoil device.

Further, the sludge anti-recoil device is a hollow structure with a wide middle and narrow ends.

Further, the diameter-to-height ratio of the channels in the anaerobic zone is 1:4-8.

Further, a sludge deflector is provided at the bottom of the aerobic zone, and a sludge settlement channel is formed between the sludge deflector and the outer wall of the sludge anti-recoil device.

Further, the aeration device includes a main air intake pipe, an annular pipe, and an air injection head, wherein the main air intake pipe communicates with the annular pipe, and more than one air injection head is arranged on the annular pipe.

Further, the air spray head is a porous blown aluminum alloy structure.

Further, the precipitation zone is a structure with a wide top and a narrow bottom.

Further, a sludge discharge pipe is provided at the center of the bottom of the sludge accumulation area.

Beneficial effects of the vertical integrated sewage treatment device of the present invention:

Beneficial effects of the present invention:

First, the bottom of the anaerobic zone is equipped with a sludge anti-recoil device, which is a hollow structure with a wide middle and narrow ends. The outer structure with narrow top and wide bottom at the upper part and the deflector form a sludge settlement channel, which is conducive to the separation of sludge and water; the outer structure with a narrow top and narrow bottom at the lower part can prevent sludge recoil when sludge enters the sludge accumulation area Floating; the hollow structure makes the aging bacteria micelles produced in the reaction of the sewage in the anaerobic zone sink into the sludge accumulation zone, effectively improving the sludge treatment effect.

Second, the aerobic zone is equipped with a deflector, which forms a sludge settlement channel between the sludge anti-recoil device at the bottom of the anaerobic zone, which is conducive to the sludge impurities after aerobic treatment entering the sludge accumulation zone, enhancing the The effect of sewage treatment.

Third, the aeration device provides sufficient oxygen for the microorganisms in the activated sludge and biofilm to ensure the activity of the microorganisms.

Fourth, the top of the system is equipped with a ring-shaped water collection area, which is convenient for collecting and discharging the treated supernatant water.

Fifth, the shape of the sedimentation area is designed as a structure with a wide top and a narrow bottom, which improves the sedimentation effect of solids in sewage.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of the vertical integrated sewage treatment device described in the present invention;

Fig. 2 is the internal structure diagram of the vertical integrated sewage treatment device described in the present invention;

Fig. 3 is the structural diagram of the aeration device of the vertical integrated sewage treatment device according to the present invention;

Fig. 4 is a schematic structural view of the sludge anti-recoil device of the vertical integrated sewage treatment device according to the present invention;

Among them, 1 is the water inlet pipe, 2 is the sludge anti-recoil device, 3 is the mud discharge pipe, 4 is the deflector, 5 is the aeration pipe, 5-1 is the main air intake pipe, 5-2 is the ring pipe, 5-3 is the jet head, 6 is the anaerobic zone, 7 is the aerobic zone, 8 is the sedimentation zone, 9 is the three-phase separator, 10 is the annular water collection zone, 11 is the exhaust pipe, 12 is the outlet pipe, 13 is the pool wall, and 14 is the sludge accumulation area.

Detailed ways

The vertical integrated sewage treatment device provided by the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 2, the schematic diagram of the vertical integrated sewage treatment device provided by the present invention is composed of three parts from the inside to the outside, the inner layer is an anaerobic zone 6, the middle layer is an aerobic zone 7, and the outer layer is a sedimentation zone 8 . Sewage flows in from the water inlet pipe 1, and is mixed with the activated sludge in the anaerobic zone 6 for anaerobic degradation, and a sludge anti-recoil device 2 is installed at the bottom. The sewage flows into the aerobic zone 7 through the top of the anaerobic zone 6; the aerobic zone 7 and the top of the anaerobic zone 6 are provided with a three-phase separator 9 for gas-liquid separation, and the generated gas is discharged from the system through the exhaust pipe 11; the aerobic zone 7 The lower part is equipped with an aeration device 5; the aerobic zone 7 is connected to the bottom of the sedimentation zone 8, and the sewage after aeration treatment enters the sedimentation zone 8 from the bottom and moves upwards, while the sludge flows downward under the action of the deflector 4 at the bottom. Enter the sludge accumulation area 14 to realize solid-liquid separation. The top of the sedimentation area 8 is provided with an annular water collection area 10, which is connected with the water outlet pipe 12, and the treated supernatant water flows out through the water outlet pipe 12.

The shape of the sedimentation zone 8 is designed as a bucket-shaped structure with a wide top and a narrow bottom, which improves the sedimentation effect of solids in sewage.

As shown in Figure 3, the aeration device 5 is composed of a main air intake pipe 5-1, an annular pipe 5-2, and an air spray nozzle 5-3. The main air intake pipe 5-1 communicates with the annular pipe 5-2, and more than one air spray head 5-3 is arranged on the annular pipe 5-2, and the air spray head is a multi-hole blown aluminum alloy air spray nozzle. The device can ensure the aeration requirement of the aerobic zone 7, provide sufficient oxygen for the growth of microorganisms in the activated sludge and biofilm, and ensure the activity of microorganisms.

As shown in Figure 4, it is a bottom schematic diagram of the vertical integrated sewage treatment device provided by the present invention, between the deflector 4 provided at the bottom of the aerobic zone 7 of the system and the sludge anti-recoil device 2 at the bottom of the anaerobic zone 6 The sludge settlement channel is formed between them, which is beneficial for the sludge after aerobic treatment to settle to the sludge accumulation area 14; the bottom of the anaerobic area 6 communicates with the sludge accumulation area 14, and the aging bacteria micelles produced after the treatment in the anaerobic area pass through the sludge accumulation area 14. The hollow structure of the mud anti-recoil device 2 sinks into the sludge accumulation area. Bacterial micelles are an important part of activated sludge and biofilm, and have a strong ability to adsorb and oxidize organic matter. The aged bacterial micelles have a higher density than water due to the adsorption of many impurities. The channel diameter-to-height ratio in the anaerobic zone is 1:4~8, and the effect of the hollow structure on the anaerobic effect is within the allowable range; the effect of sewage treatment is enhanced.

Claims (9)

1. a vertical integrated sewage treating apparatus, comprises anaerobic zone (6), aerobic zone (7) and settling region (8); It is characterized in that: three described districts are three mutually nested unitized constructions of sleeve, wherein, set gradually settling region (8), aerobic zone (7) and anaerobic zone (6) from outside to inside; Sewage is flowed into from anaerobic zone (6) bottom by water inlet pipe (1), mixes carry out anaerobic degradation, by overflow manner through inflow aerobic zone, anaerobic zone (6) top (7) with active sludge in anaerobic zone (6); Aerobic zone (7) and anaerobic zone (6) top are provided with triphase separator (9), and for gas-liquid separation, the gas of generation discharges system from vapor pipe (11); Aerobic zone (7) bottom is provided with aerating apparatus (5); Aerobic zone (7) communicates with settling region (8) bottom; Settling region (8) top is provided with annular catchment area (10), and annular catchment area (10) are connected with rising pipe (12); Bottom, settling region (8) is mud Nesting Zone (14).

2. vertical integrated sewage treating apparatus according to claim 1, it is characterized in that, described anaerobic zone (6) is the passage of a upper and lower connection, passage upper end is communicated with described aerobic zone (7), and passage lower end is connected with mud Nesting Zone (14) by the anti-recoil device of a mud (2).

3. vertical integrated sewage treating apparatus according to claim 2, is characterized in that, the anti-recoil device of described mud (2) for middle part wide, the hollow structure that two is narrow.

4. vertical integrated sewage treating apparatus according to claim 3, is characterized in that, the blade diameter length ratio of described anaerobic zone passage is 1:4 ~ 8.

5. according to described vertical integrated sewage treating apparatus arbitrary in claim 2 ~ 4, it is characterized in that, the bottom of described aerobic zone (7) is provided with mud flow deflector (4), forms sludge settling passage between the outer wall of described mud flow deflector (4) and the anti-recoil device of described mud (2).

6. vertical integrated sewage treating apparatus according to claim 1, it is characterized in that, described aerating apparatus (5) comprises main intake ducting (5-1), circulating line (5-2), jet thrust (5-3), wherein, main intake ducting (5-1) is communicated with circulating line (5-2), and circulating line (5-2) is provided with more than one jet thrust (5-3).

7. vertical integrated sewage treating apparatus according to claim 6, is characterized in that, described jet thrust (5-3) is porous air blowing aluminium alloy structure.

8. vertical integrated sewage treating apparatus according to claim 1, is characterized in that, described settling region (8) are structure wide at the top and narrow at the bottom.

9. vertical integrated sewage treating apparatus according to claim 1, is characterized in that, the bottom centre of described mud Nesting Zone (14) is provided with shore pipe (3).