CN211770550U

CN211770550U - Sewage treatment system suitable for rural area

Info

Publication number: CN211770550U
Application number: CN201922181307.7U
Authority: CN
Inventors: 黄赟芳; 胡肖怡; 刘洪�; 李锦�
Original assignee: Cgn Environmental Protection Industry Co ltd
Current assignee: Cgn Environmental Protection Industry Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-10-27
Anticipated expiration: 2029-12-06

Abstract

The utility model provides a sewage treatment system suitable for it is rural, including the anaerobic zone, the anoxic zone, the aerobic zone, the precipitation zone, DO online detector, ORP online detector, air-blast equipment and controlling means, the anaerobic zone, the anoxic zone, all be equipped with the baffle between aerobic zone and the precipitation zone, the anaerobic zone, the anoxic zone, the aerobic zone, the rivers direction of precipitation zone all is from up-flow type down, pending sewage passes through the anaerobic zone in proper order, the anoxic zone, aerobic zone and precipitation zone are handled, air-blast equipment aerates the aerobic zone, the aerobic zone is equipped with DO online detector and ORP online detector, the anoxic zone is equipped with ORP online detector, according to DO online detector and ORP online detector's test result, controlling means is operated in order to adjust the aeration rate of blast air equipment. The sewage treatment system has the advantages of simple process flow, convenient maintenance and management, less equipment, small occupied area and low energy consumption, can realize the intelligent control of the sewage treatment system, and can realize remote monitoring.

Description

Sewage treatment system suitable for rural area

Technical Field

The utility model relates to a sewage treatment technical field specifically relates to a sewage treatment system suitable for it is rural.

Background

By 2016, the town construction proportion of domestic sewage treatment in China is about 28.02%, and the town proportion of domestic sewage treatment is only 9.04%. And according to the stipulation in the 'thirteen-five' plan for comprehensive environmental remediation in rural areas across the country, 13 thousands of villages for comprehensive environmental remediation are newly added by 2020, and the rural sewage treatment rate reaches 60%. The important area for the development of sewage treatment in China is certain in rural areas in the future.

Aiming at rural sewage treatment, a plurality of small-sized sewage complete treatment devices are researched and developed at present, the complete treatment devices have the structural characteristics of small volume, all process equipment are integrated, the whole equipment can be placed indoors or buried underground, heating is not needed in equipment operation, the structure is compact, and the installation and debugging are easy. The complete set of sewage treatment device which is built and put into market at present is a buried comprehensive sewage treatment device, a small combined treatment purifying tank and the like. Because rural sewage treatment facilities are generally small in scale, large in quantity and highly dispersed, and the cost of equipping professional operators is very high, and the places are usually far away from urban areas, the maintenance, repair, updating and the like of facility equipment are greatly limited, and the normal operation of sewage treatment is difficult to ensure.

Therefore, it is very necessary to develop a sewage treatment system suitable for rural areas to overcome the above-mentioned shortcomings of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a process flow is simple, operation energy saving and consumption reduction, maintenance management are convenient, and can realize the rural sewage treatment system that is applicable to of remote monitoring, unmanned on duty's intelligent integration.

In order to achieve the above object, the utility model provides a sewage treatment system suitable for rural areas, including anaerobic zone, anoxic zone, aerobic zone, settling zone, DO online detector, ORP online detector, air-blast equipment and controlling means, anaerobic zone, anoxic zone aerobic zone with all be equipped with the baffle between the settling zone, anaerobic zone anoxic zone, aerobic zone, the rivers direction of settling zone all is from up-flow type down, and sewage to be treated flows in after the anaerobic zone is handled the anoxic zone, flows in after the anoxic zone is handled the aerobic zone, flows in after the aerobic zone is handled the settling zone, and air-blast equipment is right the aerobic zone aerates, the aerobic zone is equipped with DO online detector with ORP online detector, the anoxic zone is equipped with ORP online detector, the control device is operated to adjust the aeration amount of the blower device according to the test results of the DO online detector and the ORP online detector.

Compared with the prior art, the utility model discloses a sewage treatment system suitable for it is rural adopts anaerobic zone, anoxic zone, aerobic zone, settling zone to handle sewage, just anaerobic zone anoxic zone the aerobic zone the rivers direction of settling zone all is from up upflow formula down, and process flow is simple, operation energy saving and consumption reduction, maintenance management are convenient for equipment is few, take up an area of for little, the operation management is simple, the energy consumption is low. Meanwhile, the ORP online detector is arranged in the anoxic zone, the DO online detector and the ORP online detector are arranged in the aerobic zone, the DO online detector and the ORP online detector are used for monitoring the water quality in real time, and the control device can be set according to monitored data so as to adjust the aeration amount of the air blowing equipment, realize the intelligent control of the sewage treatment system and realize remote monitoring and unattended operation.

Preferably, a plurality of baffle plates are arranged in the anoxic zone to divide the anoxic zone into a plurality of reaction zones connected in series, and the water flow direction of each reaction zone is an upward flow type from bottom to top.

Preferably, be equipped with the filter house in the anaerobic zone, the filter house includes filter, lower filter and is located go up the filter with filler between the filter down, go up the filter with the filter all is equipped with the filtration pore down.

Preferably, the aerobic zone is provided with a first wave plate and a second wave plate, and sewage treated by the anoxic zone flows into the reaction zone of the aerobic zone after passing through the first wave plate and the second wave plate in sequence.

Preferably, a ventilation fan is arranged above the first wave plate and the second wave plate for supplying oxygen.

Preferably, the air blowing device comprises an air blower and an aeration pipe communicated with the air blower, and the control device is connected with the air blower.

Preferably, a nitrifying liquid return pipe is arranged between the aerobic zone and the anoxic zone, and nitrifying liquid in the aerobic zone flows back through gas stripping and flows into the anoxic zone through the nitrifying liquid return pipe.

Preferably, a sludge return pipe is arranged between the settling zone and the anaerobic zone, and sludge in the settling zone flows back into the anaerobic zone through the sludge return pipe by gas stripping.

Preferably, a water outlet is formed in the middle of the partition plate between the settling zone and the aerobic zone.

Preferably, the anaerobic zone, the anoxic zone, the aerobic zone and the sedimentation zone are all provided with partition plates, the respective areas of the anaerobic zone, the anoxic zone, the aerobic zone and the sedimentation zone are divided into a water passing area and a reaction area by the partition plates, and the partition plates are provided with water inlets and water outlets.

Drawings

FIG. 1 is a schematic structural diagram of a sewage treatment system suitable for rural areas, in which a nitrifying liquid return pipe and a sludge return pipe are hidden.

Fig. 2 is a schematic structural diagram of the sewage treatment system applicable to rural areas.

Description of the symbols:

the device is suitable for a rural sewage treatment system 100, an anaerobic zone 10, a filtering part 11, an upper filtering plate 111, a lower filtering plate 113, a filler 115, a drainage baffle 12, an anoxic zone 20, a baffle plate 21, an aerobic zone 30, a first wave plate 31, a second wave plate 33, a ventilating fan 35, a settling zone 40, a DO online detector 50, an ORP online detector 60, a blower 70, a blower 71, an aerator pipe 73, a control device 80, a partition plate 90, a water outlet 91, a nitrifying liquid return pipe 92, a sludge return pipe 93, a partition plate 94, a water passing zone 95, a reaction zone 96 and a water inlet and outlet 97.

Detailed Description

To explain technical solutions, structural features, and achieved technical effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with specific embodiments.

Referring to fig. 1-2, a sewage treatment system 100 suitable for rural areas of the present invention comprises an anaerobic zone 10, an anoxic zone 20, an aerobic zone 30, a settling zone 40, a DO online detector 50, an ORP online detector 60, a blower 70 and a control device 80, wherein a partition 90 is disposed between the anaerobic zone 10, the anoxic zone 20, the aerobic zone 30 and the settling zone 40, the flow directions of the anaerobic zone 10, the anoxic zone 20, the aerobic zone 30 and the settling zone 40 (the arrow direction in the figure indicates the flow direction) are upward flow from bottom to top, sewage to be treated flows into the anoxic zone 20 after being treated by the anaerobic zone 10, flows into the aerobic zone 30 after being treated by the anoxic zone 20, flows into the settling zone 40 after being treated by the aerobic zone 30, the air blower 70 aerates the aerobic zone 30, the aerobic zone 30 is provided with the online detector 50 and the ORP online detector 60, the anoxic zone 20 is provided with the ORP online detector 60, the control device 80 is operated to adjust the aeration amount of the blower device 70 according to the test results of the DO online detector 50 and the ORP online detector 60. Further, a water outlet 91 is formed in the middle of the partition plate 90 between the settling zone 40 and the aerobic zone 30, and sewage flows into the settling zone 40 from the water outlet 91 after being treated by the aerobic zone 30, so that the settling effect is ensured and the lower sludge layer is prevented from being disturbed.

Referring to fig. 1-2, the anaerobic zone 10, the anoxic zone 20, the aerobic zone 30, and the settling zone 40 are provided with partition plates 94, the respective areas of the anaerobic zone 10, the anoxic zone 20, the aerobic zone 30, and the settling zone 40 are divided into a water passing area 95 and a reaction area 96 by the partition plates 94, and the partition plates 94 are provided with water inlets and water outlets 97. That is, the influent flows into the water passing region 95 and then flows into the reaction region 96 through the water inlet/outlet 97, and the wastewater is reacted in the reaction region 96 and then overflows through the water inlet/outlet 97 from the bottom to the top, thereby realizing the upflow water flow direction. In a preferred embodiment, a drainage baffle 12 is arranged in the anaerobic zone 10, sewage to be treated flows in through one side of the drainage baffle 12, and flows out from the other side of the drainage baffle 12, specifically, overflows from the bottom of the anaerobic zone 10 from the water inlet and outlet 97 from bottom to top, so as to realize the upflow water flow direction.

Referring to fig. 2, a filter part 11 is disposed in the anaerobic zone 10, the filter part 11 includes an upper filter plate 111, a lower filter plate 113, and a filler 115 disposed between the upper filter plate 111 and the lower filter plate 113, and the upper filter plate 111 and the lower filter plate 113 are provided with filter holes (not shown). The primary filtration can be realized by using the filtering part 11, and the filtering part 11 can adopt a fixed filler hanging film for intercepting microorganisms. The filler 115 may be a bio-polyurethane bio-filler, but not limited thereto. Further, the filling volume of the filler 115 is 40% of the volume of the anaerobic zone 10.

Referring to fig. 2, a plurality of baffles 21 are disposed in the anoxic zone 20 to divide the anoxic zone 20 into a plurality of reaction zones 96 connected in series, and the water flow direction of each reaction zone 96 is upward flow from bottom to top. In this embodiment, adopt 3 baffling boards 21, cut apart into 3 reaction zones 96 of establishing ties with anoxic zone 20, the rivers direction of every reaction zone 96 is from up upflow formula down, and both combine to make activated sludge and sewage intensive mixing reaction, save agitated vessel, improve treatment effeciency. Further, the space of the reaction zone 96 of the anaerobic zone 10 is half of the space of the reaction zone 96 of the anoxic zone 20.

Referring to fig. 2, the aerobic zone 30 is provided with a first wave plate 31 and a second wave plate 33, and the sewage treated by the anoxic zone 20 sequentially passes through the first wave plate 31 and the second wave plate 33 and then flows into the reaction zone 96 of the aerobic zone 30. The first waved plate 31 and the second waved plate 33 are both in a waved structure. The sewage is naturally oxygenated by dropping and deflecting on the first wave plate 31 and the second wave plate 33. Meanwhile, the sewage treated in the anoxic zone 20 flows to the first wave plate 31, then flows to the second wave plate 33 from the first wave plate 31, then flows into the water passing zone 95, and flows into the reaction zone 96 through the water inlet and outlet 97, so that the flow guide effect is achieved, the water flow enters from the upper left of the aerobic zone 30, is fully mixed with the sludge in the tank and then enters the sedimentation tank from the middle of the right, and the short-flow phenomenon caused by large water amount is avoided. Furthermore, a ventilation fan 35 is arranged above the first wave plate 31 and the second wave plate 33 for supplying oxygen, and the ventilation fan 35 and the air blowing device 70 are used for supplying oxygen in cooperation to ensure the oxygen supply in the device, so that the mechanical aeration quantity at the bottom is reduced, and the energy consumption of treatment is reduced.

Referring to fig. 2, a nitrifying liquid return pipe 92 is disposed between the aerobic zone 30 and the anoxic zone 20, and nitrifying liquid in the aerobic zone 30 flows back to the anoxic zone 20 through the nitrifying liquid return pipe 92 by gas stripping. Further, a sludge return pipe 93 is provided between the settling zone 40 and the anaerobic zone 10, and the sludge in the settling zone 40 flows back into the anaerobic zone 10 through the sludge return pipe 93 by air stripping. And by adopting a gas stripping reflux technology, the use of a nitrifying liquid reflux pump and a sludge reflux pump is reduced, the occupied area is reduced, and the energy consumption is reduced.

Referring to fig. 2, the blower unit 70 includes a blower 71 and an aeration pipe 73 communicating with the blower 71, the control device 80 is connected to the blower 71, the blower 71 aerates the aerobic zone 30 through the aeration pipe 73, and the aeration amount of the blower 71 can be controlled by the parameter design of the control device 80. Further, the DO online detector 50 and the ORP online detector 60 are connected with the control device 80, the control device 80 adopts an I/O port intelligent management program, data acquisition of the DO online detector 50 and the ORP online detector 60 is used as data input, the start and stop of the air blower 71 are controlled by using installation software on the control device 80, and the aeration amount, the nitrification liquid reflux amount and the sludge reflux amount of the aerobic zone 30 can be adjusted in real time according to data fed back by real-time test of the DO online detector 50 and the ORP online detector 60, so that the intelligent control of the sewage treatment system is realized, and remote monitoring and unattended operation are realized. In a preferred embodiment, the anaerobic zone 10, the anoxic zone 20, the aerobic zone 30, the settling zone 40, the blower unit 70 and the control device 80 are integrated in a container, which saves the floor space of the sewage treatment system 100 and facilitates transportation and installation.

The working principle of the sewage treatment system 100 applicable to rural areas of the present application is described in detail below with reference to fig. 1-2:

sewage to be treated flows into an anaerobic zone 10 and enters an anoxic zone 20 from bottom to top through a filtering part 11, the anoxic zone 20 is divided into a plurality of reaction zones 96 connected in series through baffle plates 21, and the water flow direction of each reaction zone 96 is in an upward flow type from bottom to top; the reaction zone 96 of the most terminal anoxic zone 20 enters the first wave plate 31 of the aerobic zone 30 by overflow water, then flows to the second wave plate 33, namely, water flows are guided from the upper left side to enter the reaction zone 96 of the aerobic zone 30, and then enters the sedimentation zone 40 from the water outlet 91 after being treated by the aerobic zone 30, and then the water overflows to obtain purified water. Wherein, the nitrified liquid flows back to the anoxic zone 20 through gas stripping by the nitrified liquid return pipe 92, and the sludge in the settling zone 40 flows back to the anaerobic zone 10 through gas stripping by the sludge return pipe 93. The DO online detector 50 is arranged in the aerobic zone 30, the ORP online detector 60 is arranged in the anoxic zone 20 and the aerobic zone 30, the DO online detector 50 and the ORP online detector 60 are connected to the control device 80, the control device 80 is connected to a control switch of the blower 71, and the aeration amount of the blower 71, the return flow of the nitrified liquid and the return flow of the sludge are controlled in real time through the arrangement of the DO online detector 50 and the ORP online detector 60.

Wherein the retention time of the anaerobic zone 10 is 2-3 h, the retention time of the anoxic zone 20 is 3-6 h, and the retention time of the aerobic zone 30 is 8-12 h; the reflux ratio of the nitrifying liquid is 100 to 400 percent, and the reflux ratio of the sludge is 50 to 100 percent; the gas-water ratio is 5: 1-8: 1. DO of the aerobic zone 30 is controlled to be about 2mg/L, ORP of the aerobic zone 30 is controlled to be about 40 mV-60 mV, and ORP of the anoxic zone 20 is controlled to be about-90 mV.

Compared with the prior art, the utility model discloses a sewage treatment system 100 suitable for it is rural adopts anaerobic zone 10, anoxic zone 20, good oxygen district 30, settling zone 40 to handle sewage, and anaerobic zone 10, anoxic zone 20, good oxygen district 30, settling zone 40's rivers direction all is from up upflow down, and process flow is simple, operation energy saving and consumption reduction, maintenance management are convenient for equipment is few, take up an area of for a short time, operation management is simple, the energy consumption is low. Meanwhile, an ORP online detector 60 is arranged in the anoxic zone 20, a DO online detector 50 and an ORP online detector 60 are arranged in the aerobic zone 30, water quality is monitored in real time by utilizing the DO online detector 50 and the ORP online detector 60, and a control device 80 can be arranged according to monitored data to adjust the aeration amount of the air blowing device 70, so that the intelligent control of the sewage treatment system is realized, and remote monitoring and unattended operation are realized.

It should be noted at last that the above embodiments are only used for the technical solution of the present invention and not for the limitation of the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, the present invention is not limited to the above disclosed embodiments, but should cover various modifications and equivalent combinations performed according to the essence of the present invention.

Claims

1. A sewage treatment system suitable for rural areas is characterized by comprising an anaerobic zone, an anoxic zone, an aerobic zone, a precipitation zone, a DO online detector, an ORP online detector, a blower device and a control device, wherein partition plates are arranged among the anaerobic zone, the anoxic zone, the aerobic zone and the precipitation zone, the water flow directions of the anaerobic zone, the anoxic zone, the aerobic zone and the precipitation zone are all in an up-flow type from bottom to top, the anaerobic zone is communicated with the anoxic zone, the anoxic zone is communicated with the aerobic zone, the aerobic zone is communicated with the precipitation zone, the blower device is communicated with the aerobic zone, the aerobic zone is provided with the DO online detector and the ORP online detector, the anoxic zone is provided with the ORP online detector, and according to the test results of the DO online detector and the ORP online detector, the control device is operated to adjust the aeration amount of the air blowing apparatus.

2. The sewage treatment system suitable for rural areas of claim 1, wherein a plurality of baffle plates are arranged in the anoxic zone to divide the anoxic zone into a plurality of reaction zones connected in series, and the water flow direction of each reaction zone is an upward flow type from bottom to top.

3. The sewage treatment system suitable for rural areas of claim 1, wherein a filtering part is arranged in the anaerobic zone, the filtering part comprises an upper filtering plate, a lower filtering plate and a filler positioned between the upper filtering plate and the lower filtering plate, and the upper filtering plate and the lower filtering plate are both provided with filtering holes.

4. The sewage treatment system suitable for rural areas of claim 1, wherein the aerobic zone is provided with a first wave plate and a second wave plate, and sewage treated by the anoxic zone flows into the reaction zone of the aerobic zone after sequentially passing through the first wave plate and the second wave plate.

5. The sewage treatment system suitable for rural areas of claim 4, wherein a ventilation fan is arranged above the first wave plate and the second wave plate for supplying oxygen.

6. The sewage treatment system suitable for rural areas according to claim 1, wherein the air blower device comprises an air blower and an aeration pipe communicated with the air blower, and the control device is connected with the air blower.

7. The sewage treatment system applicable to rural areas of claim 1, wherein a nitrifying liquid return pipe is arranged between the aerobic area and the anoxic area, and nitrifying liquid in the aerobic area flows back to the anoxic area through the nitrifying liquid return pipe by gas stripping.

8. The sewage treatment system suitable for rural areas of claim 1, wherein a sludge return pipe is arranged between the settling zone and the anaerobic zone, and sludge in the settling zone flows back to the anaerobic zone through the sludge return pipe by gas stripping.

9. The sewage treatment system applicable to rural areas of claim 1, wherein a water outlet is formed in the middle of the partition plate between the sedimentation zone and the aerobic zone.

10. The sewage treatment system applicable to rural areas of claim 1, wherein the anaerobic zone, the anoxic zone, the aerobic zone and the sedimentation zone are provided with partition plates, the respective areas of the anaerobic zone, the anoxic zone, the aerobic zone and the sedimentation zone are divided into a water passing area and a reaction area by the partition plates, and the partition plates are provided with water inlets and water outlets.