CN111777171A

CN111777171A - Rural domestic sewage treatment plant of ASBR

Info

Publication number: CN111777171A
Application number: CN202010663192.XA
Authority: CN
Inventors: 闵敏; 丁成; 李朝霞; 陈天明; 李玉山; 刘青
Original assignee: Yancheng Institute of Technology
Current assignee: Dragon Totem Technology Hefei Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-10-16
Anticipated expiration: 2040-07-10
Also published as: CN111777171B

Abstract

The invention relates to an ASBR rural domestic sewage treatment device, which comprises an ASBR reactor, wherein the ASBR reactor comprises an upper water inlet and water distribution and exhaust area and a lower reaction area, raw water enters the reaction area from the water inlet and water distribution and exhaust area, solid-liquid-gas separation is carried out after the raw water is treated by the reaction area, finally gas is discharged from the top of the ASBR reactor, liquid is discharged from the middle of the ASBR reactor, and solid is discharged from the bottom of the ASBR reactor. The rural domestic sewage treatment plant of ASBR that provides among the above-mentioned technical scheme, simple structure, low cost can effectively solve rural sewage treatment inconvenience and aerobic biotechnology and handle rural sewage high running cost's problem.

Description

Rural domestic sewage treatment plant of ASBR

Technical Field

The invention relates to the technical field of sewage treatment, in particular to an ASBR rural domestic sewage treatment device.

Background

One of the construction targets of new rural areas in China is that rural appearance is clean, but the current rural sewage collecting and treating system is not sound, domestic sewage is not effectively treated and is directly discharged into rivers and lakes, so that water environment pollution is caused, and the normal life of rural residents and the rapid development of rural economy are adversely affected. Most rural areas do not have a unified sewage pipe network collection system, and people live in relatively scattered people, so that the rural domestic sewage discharge amount is small, and the water quality and water quantity fluctuation is large. Meanwhile, the income level of rural areas is relatively low, and sewage treatment technicians are short. The aerobic biological technology is quite mature at present and is higher in operating cost when used for treating domestic sewage in vast rural areas in China. Therefore, it is necessary to design a new technical solution to comprehensively solve the problems in the prior art.

Disclosure of Invention

The invention aims to provide an ASBR rural domestic sewage treatment device which is simple in structure and low in cost and can effectively solve the problems that rural sewage is inconvenient to treat and the operating cost for treating rural sewage by using an aerobic biological technology is high.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a rural domestic sewage treatment plant of ASBR, includes the ASBR reactor, the ASBR reactor includes upper portion water distribution and exhaust zone and lower part reaction zone of intaking, and the raw water gets into the reaction zone by water distribution and exhaust zone of intaking, carries out solid-liquid-gas separation after the reaction zone is handled, finally by ASBR reactor top exhaust gas, middle part discharge liquid, bottom discharge solid.

The utility model discloses a water distribution and exhaust area are located the screen cloth below, just link to each other with the mouth of pipe bottom, water distribution and exhaust area are horizontal pipe, be provided with rotary impeller along its axial in the pipe, rotary impeller divides into each check room with pipe inner space etc. along its circumference around its rotation axis, and the raw water gets into in the check room with the mouth of pipe intercommunication by the inlet tube of ASBR reactor to the rotatory entering reaction zone through rotary impeller.

The ASBR reactor is characterized in that an exhaust pipe is arranged at the top of the ASBR reactor, and gas generated by raw water treated in a reaction zone enters a grid chamber communicated with the reaction zone and enters the exhaust pipe through rotation of a rotary impeller.

The further scheme is that the edge distance of two adjacent blades of the rotating impeller is consistent with the inner diameters of the pipe orifice and the reaction zone, and six blades of the rotating impeller are arranged.

The ASBR reactor at the reaction zone is provided with a water outlet, the water outlet is arranged at a clear water layer of the reaction zone, and a decanter and a control valve are arranged at the joint of the water outlet and the reaction zone.

The ASBR reactor at the lower part of the reaction zone is provided with a drain outlet, and raw water sediments treated in the reaction zone are discharged from the drain outlet.

According to the rural domestic sewage treatment device of the ASBR provided by the technical scheme, rural sewage is treated by the ASBR, raw water enters the reaction zone of the ASBR to react, gas after reaction is discharged from the top of the ASBR, liquid is discharged from the middle of the ASBR, and solid is discharged from the bottom of the ASBR. The reactor is an unsteady state anaerobic bioreactor which intermittently operates, water is fed from the upper part, and in the time period that sewage is filled with a grid chamber, a lower reaction zone completes an operation period, namely the ASBR can complete four processes of a water feeding period, a reaction period, a settling period and a water discharging period.

The water inlet, water distribution and exhaust area of the invention adopts a horizontal tubular structure, and a rotary impeller is arranged in the tube, raw water realizes continuous water inlet and water distribution of the ASBR through the rotation of the grid chamber and the rotary impeller, no power is consumed in the whole operation process, the power of the rotary impeller mainly depends on the dead weight of water in the grid chamber, and the water in the grid chamber of the impeller is heavier than gas, so that the rotating shaft of the rotary impeller is used as the center to form torsional force. The device can realize unpowered consumption operation and effectively reduce the treatment cost of rural domestic sewage.

The ASBR reactor is also provided with a water outlet, the water outlet is provided with a decanter and a control valve, the decanter can filter the treated clear water, and the control valve can adjust the liquid discharge rate.

According to the invention, the sewage draining outlet is arranged at the bottom of the ASBR, the treated sediment is directly discharged by utilizing the principle of solid sediment, the path is simple and rapid, the sludge backflow is not required, and the next stage of treatment is conveniently and rapidly carried out.

Drawings

FIG. 1 is a schematic structural diagram of an ASBR rural domestic sewage treatment device of the present invention;

fig. 2 is a schematic structural view of a rotary impeller according to the present invention.

In the figure: 1. screening a screen; 2. water inlet, distribution and exhaust areas; 3. rotating the impeller; 4. a reaction zone.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

The technical scheme adopted by the invention is shown in figure 1, and the device for treating rural domestic sewage by using ASBR comprises an ASBR reactor, wherein the ASBR reactor comprises an upper water inlet distribution and exhaust area 2 and a lower reaction area 4, raw water enters the reaction area 4 from the water inlet distribution and exhaust area 2, sludge, clean water and biogas are separated after being treated by the reaction area 4, finally biogas is discharged from the top of the ASBR reactor, clean water is discharged from the middle of the ASBR reactor, and sludge is discharged from the bottom of the ASBR reactor.

Specifically, ASBR reactor top is the mouth of pipe of vertical arrangement, is provided with screen cloth 1 in the mouth of pipe, can filter impurity and big particulate matter in the aquatic, intake water distribution and exhaust area 2 is located screen cloth 1 below, and links to each other with the mouth of pipe bottom, intake water distribution and exhaust area 2 is horizontal pipe, is provided with rotary impeller 3 along its axial in the pipe, rotary impeller 3 is around its rotation axis along its circumference with circle intraductal space divide into six check rooms equally, and the adjacent two blade edge distance of rotary impeller 3 is unanimous with the internal diameter of mouth of pipe and reaction zone, refer to fig. 1.

An exhaust pipe is arranged at the top of the ASBR, and gas generated by raw water treated in the reaction zone enters a grid chamber communicated with the reaction zone and enters the exhaust pipe through the rotation of a rotary impeller; a water outlet is arranged on the ASBR reactor at the reaction zone, the water outlet is arranged at the clear water layer of the reaction zone, and a decanter and a control valve are arranged at the joint of the water outlet and the reaction zone; a sewage outlet is arranged on the ASBR at the lower part of the reaction zone, and the raw water sediment treated in the reaction zone is discharged from the sewage outlet.

In the embodiment, domestic sewage enters a pipe orifice from a water inlet pipe of an ASBR (anaerobic sequencing batch reactor), impurities and large particles in the sewage are removed through a screen, the sewage after pretreatment firstly flows into the uppermost grid chamber communicated with the pipe orifice, after the grid chambers are filled with the sewage, an impeller rotates anticlockwise, the sewage then enters the next grid chamber rotating to the uppermost grid chamber and is sequentially fed, and therefore continuous water inlet and water distribution of the reactor are achieved; when the water-filled cells are rotated to the lowermost position, the wastewater flows into the reaction zone. After water is fed, anaerobic reaction is started to generate gas, the gas generation speed is gradually increased and gradually reduced when the gas generation speed reaches the maximum, the gas generation is almost stopped, simultaneously, sludge in a reaction area is precipitated to the bottom, a clear water layer is formed at the upper part, the treated water is discharged out of the ASBR through a decanter, the flow rate is regulated through a control valve, the methane generated by the reaction upwards enters a grid chamber communicated with the reaction area, then the grid chamber filled with the methane is rotated to the uppermost part of the ASBR through the rotation of a rotary impeller, and then the methane is discharged out of the ASBR through an exhaust pipe; the sediment sludge generated by the reaction is discharged through a sewage outlet at the bottom of the ASBR reactor.

In a word, the rotational direction of the rotary impeller of the ASBR rural domestic sewage treatment device of the invention basically depends on the gravity action of water and can rotate freely, as shown in figure 1, because the gas is generated in the cells on the right side of the rotary impeller, the rotary impeller tends to rotate anticlockwise under the action of the gas, no power consumption is generated in the operation process, the operation without power consumption can be realized, only the capital cost needs to be invested once, and the treatment cost of rural domestic sewage is effectively reduced.

The present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent changes and substitutions without departing from the principle of the present invention after learning the content of the present invention, and these equivalent changes and substitutions should be considered as belonging to the protection scope of the present invention.

Claims

1. The utility model provides a rural domestic sewage treatment plant of ASBR, includes the ASBR reactor, its characterized in that: the ASBR reactor comprises an upper water inlet, water distribution and exhaust area and a lower reaction area, raw water enters the reaction area from the water inlet, water distribution and exhaust area, and solid-liquid-gas separation is carried out after the raw water is treated by the reaction area; finally, gas was withdrawn from the top of the ASBR reactor, liquid was withdrawn from the middle and solids were withdrawn from the bottom.

2. The ASBR rural domestic sewage treatment plant of claim 1, characterized in that: the ASBR reactor top is the mouth of pipe of vertical arrangement, be provided with the screen cloth in the mouth of pipe, water distribution and exhaust area of intaking are located the screen cloth below, and link to each other with the mouth of pipe bottom, water distribution and exhaust area of intaking are horizontal pipe, be provided with rotatory impeller along its axial in the pipe, rotatory impeller is around its rotation axis along its circumference with each check room of intraductal space equi-divide of pipe, the raw water gets into the check indoor with the mouth of pipe intercommunication by the inlet tube of ASBR reactor to through rotatory entering reaction zone of rotatory impeller.

3. The ASBR rural domestic sewage treatment plant of claim 2, characterized in that: the top of the ASBR reactor is provided with an exhaust pipe, and gas generated by raw water treated in the reaction zone enters a grid chamber communicated with the reaction zone and enters the exhaust pipe through rotation of a rotary impeller.

4. The ASBR rural domestic sewage treatment plant of claim 2 or 3, characterized in that: the edge distance between two adjacent blades of the rotary impeller is consistent with the inner diameters of the pipe orifice and the reaction zone, and six blades of the rotary impeller are arranged.

5. The ASBR rural domestic sewage treatment plant of claim 1, characterized in that: the ASBR reactor at the reaction zone is provided with a water outlet, the water outlet is arranged at a clear water layer of the reaction zone, and a decanter and a control valve are arranged at the joint of the water outlet and the reaction zone.

6. The ASBR rural domestic sewage treatment plant of claim 1, characterized in that: and a sewage draining outlet is formed in the ASBR reactor at the lower part of the reaction zone, and raw water sediments treated in the reaction zone are discharged from the sewage draining outlet.