CN111137971A

CN111137971A - Sequencing batch activated sludge treatment method

Info

Publication number: CN111137971A
Application number: CN201811312553.5A
Authority: CN
Inventors: 郑豪
Original assignee: Zangzhou Junlong New Energy Technology Co ltd
Current assignee: Zangzhou Junlong New Energy Technology Co ltd
Priority date: 2018-11-06
Filing date: 2018-11-06
Publication date: 2020-05-12

Abstract

The invention discloses a sequencing batch activated sludge treatment method, which comprises an inner box and an outer box, wherein the outer box is sleeved outside the inner box in a sealing manner, part of the inner box is positioned at the outer end of the upper surface of the outer box, a plurality of liquid inlets are formed in the surface of the outer side of the inner box along a circle, an aeration port is formed in the surface of the inner side of the outer box, a filter pipe connected with the bottom surface of the outer box is arranged on the lower end surface of the inner box, a sealing cover is arranged on the upper surface of the inner box, a wastewater injection pipe is inserted in the sealing cover, an L-shaped pipe is connected between the liquid outlet end of a one-way diversion valve and the wastewater injection pipe, and the aeration; the treatment process comprises the following steps: (1) injecting waste water; (2) nano-filtering; (3) filtering the concentrated solution after filtration, and returning the filtered permeate to the step (1) for retreatment; (4) and (5) aerating the filtered concentrated solution, and discharging the aerated concentrated solution. In the field of activated sludge treatment, the invention achieves automatic treatment and realizes the thorough purification of multiple cycles of nanofiltration filtration and aeration.

Description

Sequencing batch activated sludge treatment method

Technical Field

The invention relates to the field of sludge treatment, in particular to a sequencing batch activated sludge treatment method.

Background

Organic matter in wastewater is the most important pollutant causing water pollution, and biological treatment is the most economical and effective method for removing organic pollutants in wastewater. The activated sludge process is the waste water biological treatment method invented and applied at the earliest time, is widely applied, and people develop various treatment processes which are more economical, have stronger treatment function and operate more stably on the basis of the activated sludge process. The Sequencing Batch Reactor (SBR) is an activated sludge process treatment system which operates by adopting an intermittent aeration mode, is different from the traditional activated sludge process in the operation mode and the reaction process, integrates water feeding, anaerobic treatment, aerobic treatment and sedimentation in a pool, can flexibly change the operation mode to adapt to the treatment requirements of different types of wastewater, and can realize the purposes of nitrogen and phosphorus removal and activated sludge granulation.

Compared with the rapid development of sewage treatment technology and scientific research level, the teaching content and teaching form are old, the experimental means are not complete enough, the experimental conditions for culturing the innovation capability of students, particularly the modern design, innovation and comprehensive experimental devices are seriously lacked, and the culture of the engineering practice capability of students and the exertion of the innovation capability are seriously influenced. At present, the development and development of experimental devices which are in direct contact with the latest international research results are urgently needed, and the international modern sewage treatment experimental environment is established and perfected. Therefore, development of an experimental device for SBR sewage treatment is necessary.

Disclosure of Invention

The invention aims to solve the problems and designs a sequencing batch activated sludge treatment method.

In order to achieve the purpose, the invention provides the following technical scheme: a sequencing batch activated sludge treatment method comprises an inner box and an outer box, wherein the outer box is sleeved outside the inner box in a sealing manner, part of the inner box is positioned at the outer end of the upper surface of the outer box, a plurality of liquid inlets are formed in the outer surface of the inner box along a circle, an aeration port is formed in the inner surface of the outer box, a filter pipe connected with the inner bottom surface of the outer box is arranged on the lower end surface of the inner box, a sealing cover is arranged on the upper surface of the inner box, a wastewater injection pipe is inserted in the sealing cover, a nanofiltration pipe is arranged between the wastewater injection pipe and the filter pipe, a permeation liquid core column of the nanofiltration pipe is connected with a flow guide pipe, the other end of the flow guide pipe is connected with the wastewater injection pipe in a sealing manner, a separation plate sleeved on the wastewater injection pipe is arranged inside the inner box, a one-way diversion valve is arranged on the separation plate in a penetrating manner, the aeration port is connected with an aeration conveying pipe.

The treatment process comprises the following steps:

(1) injecting waste water;

(2) nano-filtering;

(3) filtering the concentrated solution after filtration, and returning the filtered permeate to the step (1) for retreatment;

(4) the concentrated solution is aerated after being filtered

(5) And discharging after aeration.

Preferably, the nanofiltration interval time of the step (2) is 5MIN, each nanofiltration time is 4-6H, and the step (4) starts aeration when the wastewater is injected for 15-25 MIN.

Preferably, the surfaces of two opposite sides of the sealing cover are respectively provided with a connecting ring, the upper surface of the outer box is provided with a connecting rod, and the sealing cover enables the connecting rings to be sleeved on the connecting rod to realize fixation in the rotating process.

Preferably, the waste water after aeration in the step (4) flows back to the inner tank and flows into the L-shaped pipe through the one-way diversion valve to enter the waste water injection pipe again for circulation.

Preferably, the step (5) is carried out when the process time of the sewage circularly flowing into the wastewater after the aeration in the step (4) is 4-6H.

Preferably, step (1) is stopped when step (4) is started, and is performed again after the discharge is completed in step (5).

The sequencing batch activated sludge treatment method manufactured by the technical scheme of the invention has the advantages that automatic treatment is realized and multiple cycles of nanofiltration filtration and aeration are realized for thorough purification in the field of activated sludge treatment.

Drawings

FIG. 1 is a schematic view showing the structure of a sequencing batch activated sludge treatment process according to the present invention;

FIG. 2 is a flow chart of an embodiment of a sequencing batch activated sludge treatment process according to the present invention;

in the figure, 1, an inner box; 2. an outer box; 3. a liquid inlet; 4. an aeration opening; 5. a filter tube; 6. a sealing cover; 7. a waste water injection pipe; 8. a nanofiltration tube; 9. a flow guide pipe; 10. a separator plate; 11. a one-way diverter valve; 12. an L-shaped tube; 13. an aeration conveying pipe; 14. a connecting ring; 15. a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a sequencing batch activated sludge treatment method as shown in figure 1-2, which comprises an inner box 1 and an outer box 2, wherein the outer box 2 is hermetically sleeved outside the inner box 1, one part of the inner box 1 is positioned at the outer end of the upper surface of the outer box 2, a plurality of liquid inlets 3 are arranged on the outer surface of the inner box 1 along the circumference, an aeration opening 4 is arranged on the inner surface of the outer box 2, a filter pipe 5 connected with the inner bottom surface of the outer box 2 is arranged on the lower end surface of the inner box 1, a seal cover 6 is arranged on the upper surface of the inner box 1, a wastewater injection pipe 7 is inserted on the seal cover 6, a nano-filter pipe 8 is arranged between the wastewater injection pipe 7 and the filter pipe 5, a liquid penetrating core column of the nano-filter pipe 8 is connected with a guide pipe 9, the other end of the guide pipe 9 is hermetically connected with the wastewater injection pipe 7, a separation plate 10 sleeved on the wastewater injection pipe 7, a one-way diversion valve 11 penetrates through the isolation plate 10, an L-shaped pipe 12 is connected between the liquid outlet end of the one-way diversion valve 11 and the wastewater injection pipe 7, and the aeration port 4 is connected with an aeration transmission pipe 13; the treatment process comprises the following steps:

(1) injecting waste water;

(2) nano-filtering;

(4) the concentrated solution is aerated after being filtered

(5) And discharging after aeration.

The nanofiltration interval time of the step (2) is 5MIN, each nanofiltration time is 4-6H, and the step (4) starts aeration when the wastewater is injected for 15-25 MIN; the surfaces of two opposite sides of the sealing cover 6 are respectively provided with a connecting ring 14, the upper surface of the outer box 2 is provided with a connecting rod 15, and the sealing cover 6 enables the connecting rings 14 to be sleeved on the connecting rod 15 to realize fixation in the rotating process; the wastewater after aeration in the step (4) flows back to the inner tank 1 and flows into the L-shaped pipe 12 through the one-way diversion valve 11 to enter the wastewater injection pipe 7 again for circulation; step (5) is implemented when the process time of sewage circularly flowing into the wastewater after aeration in step (4) is 4-6H; step (1) is stopped when step (4) is started, and is performed again after the discharge is completed in step (5).

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A sequencing batch activated sludge treatment method is characterized by comprising an inner box and an outer box, wherein the outer box is sleeved outside the inner box in a sealing manner, part of the inner box is positioned at the outer end of the upper surface of the outer box, a plurality of liquid inlets are formed in the surface of the outer side of the inner box along a circle, an aeration port is formed in the surface of the inner side of the outer box, a filter pipe connected with the inner bottom surface of the outer box is arranged on the lower end surface of the inner box, a sealing cover is arranged on the upper surface of the inner box, a wastewater injection pipe is inserted in the sealing cover, a nanofiltration pipe is arranged between the wastewater injection pipe and the filter pipe, a permeate liquid core column of the nanofiltration pipe is connected with a draft pipe, the other end of the draft pipe is connected with the wastewater injection pipe in a sealing manner, a separation plate sleeved on the wastewater injection pipe is arranged inside the inner box, a one-way diversion valve is arranged on the separation plate in a, the aeration port is connected with an aeration conveying pipe.

2. The sequencing batch activated sludge treatment method of claim 1, wherein the treatment process comprises:

(1) injecting waste water;

(2) nano-filtering;

(4) the concentrated solution is aerated after being filtered

(5) And discharging after aeration.

3. The process flow of claim 2, wherein the nanofiltration interval of step (2) is 5MIN and each nanofiltration time is 4-6H, and the aeration of step (4) is started when the wastewater is injected for 15-25 MIN.

4. The sequencing batch activated sludge treatment method as claimed in claim 1, wherein the sealing cover is provided with connecting rings on opposite side surfaces thereof, and the outer tank is provided with a connecting rod on an upper surface thereof, and the sealing cover fixes the connecting rings by being fitted over the connecting rod during rotation.

5. The process of claim 2, wherein the wastewater after aeration in step (4) flows back to the inner tank and flows into the L-shaped pipe through the one-way diversion valve to enter the wastewater injection pipe again for circulation.

6. A process according to claim 2 or 5, wherein step (5) is carried out when the process time for circulating the sewage after aeration in step (4) into the wastewater is 4-6H.

7. The process flow of claim 2, wherein step (1) is stopped when step (4) is started and is performed again after the completion of the discharging in step (5).