CN110950425A - Continuous flow SBR domestic sewage treatment method and device - Google Patents

Continuous flow SBR domestic sewage treatment method and device Download PDF

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Publication number
CN110950425A
CN110950425A CN201911079563.3A CN201911079563A CN110950425A CN 110950425 A CN110950425 A CN 110950425A CN 201911079563 A CN201911079563 A CN 201911079563A CN 110950425 A CN110950425 A CN 110950425A
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reaction zone
aeration
stage
water
domestic sewage
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简磊
袁延磊
姜元臻
高博
邓翠兰
顾晓扬
汪晓军
郑静宜
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Guangzhou Hualu Environmental Protection Technology Co ltd
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Guangzhou Hualu Environmental Protection Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1263—Sequencing batch reactors [SBR]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Activated Sludge Processes (AREA)

Abstract

The invention discloses a continuous flow SBR domestic sewage treatment method and a device, the device comprises a reaction container, a partition plate, a drainage mechanism, a water inlet pipe, an aeration device and a control mechanism, wherein the partition plate divides the interior of the reaction container into at least four reaction zones, and the four reaction zones comprise a first reaction zone, a second reaction zone, a third reaction zone and a fourth reaction zone; the bottoms of the reaction zones are communicated with each other, the water inlet pipe is longitudinally arranged in the middle of the reaction container, and the lower end of the water inlet pipe is communicated with the lower end of each reaction zone; the method comprises the following steps: the method comprises a water inlet stage, an aeration stage, a precipitation stage and a continuous water inlet and outlet stage, wherein the method is characterized in that the space of a traditional SBR reaction container is divided, the process design of continuous flow is realized by utilizing the water level pressure difference, a water inlet pipe is arranged in the middle of the reaction container to realize uniform water inlet, the automatic control program is simplified, the anoxic stirring link is omitted, and the treatment period duration is shortened on the premise of ensuring that the outlet water reaches five types of water on the ground surface.

Description

Continuous flow SBR domestic sewage treatment method and device
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a continuous flow SBR domestic sewage treatment method and a device.
Background
SBR is a short term for Sequencing Batch Reactor Activated sludge process (Sequencing Batch process), is an Activated sludge sewage treatment technology operating in an intermittent aeration mode, and is also called Sequencing Batch Activated sludge process.
The Sequencing Batch Reactor Activated sludge process (SBR) is a domestic sewage treatment process, and is different from the traditional Activated sludge process which adopts space division to treat sewage.
In the SBR system, sewage enters a reaction tank in a water inlet stage and is mixed with activated sludge, so that a homogenization effect is achieved; after a certain water level, starting to enter a reaction stage, aerating the reaction tank by an air blower at the stage, converting ammonia nitrogen and organic matters in sewage into nitrate nitrogen and CO2 by microorganisms in the reaction tank in an aerobic environment, then stopping aerating and starting stirring to provide an anoxic environment for the microorganisms, further removing the organic matters in the sewage, and reducing the nitrate nitrogen into nitrogen; after the biodegradation is finished, entering a precipitation stage, and achieving the effect of separating mud and water by relying on the action of gravity, which is equivalent to a secondary precipitation tank; finally, the supernatant is discharged by a decanter.
SBR was originally proposed by Ardern and Locke scholars in 1914, but is not suitable for sewage treatment systems with increasing scale due to the technical characteristics of discontinuous water inlet and outlet and tedious intermittent operation management, and is not widely applied; the automation technology can not be popularized and applied until the rapid development of the automation technology in the last 70 th century, and various novel SBR processes are derived. In the 70 s of the 20 th century, Goronszy professor australia invented the intermittent cyclic delay aeration activated sludge process (ICEAS); on the basis, a CASS process is developed and is evaluated as a innovation and substitution technology by the national environmental protection agency in 1986; in 1987, UNITANK technology was proposed by smith water company, belgium.
Although these new SBR processes solve the problem of continuous water inlet and outlet, they all have the following disadvantages:
(1) the single valve is required to be arranged for multi-point water inlet, the water outlet cannot realize self-flow, a water pump is required, and a pipe network is complex;
(2) the multiple groups of SBR alternately discharge water, the regulation and control are complex, the requirement on automatic control is high, and the management and maintenance difficulty is high;
(3) the design is complicated, the construction period is long and the cost is high.
In summary, how to further break the limitation of the existing novel SBR process in practical application is to simplify the design, reduce the requirement of automation control, and solve the disadvantages of the conventional SBR process and the improvement process thereof.
Disclosure of Invention
The invention aims to overcome the defects, and provides a continuous flow SBR domestic sewage treatment method and a continuous flow SBR domestic sewage treatment device.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a continuous flow SBR domestic sewage treatment method comprises the following steps: the method comprises the following steps of presetting a continuous flow SBR domestic sewage treatment device, wherein the continuous flow SBR domestic sewage treatment device comprises a reaction container, a partition plate, a drainage mechanism, a water inlet pipe, an aeration device and a control mechanism, wherein the partition plate divides the interior of the reaction container into at least four reaction zones, and the four reaction zones comprise a first reaction zone, a second reaction zone, a third reaction zone and a fourth reaction zone; the bottoms of the reaction zones are communicated with each other, the water inlet pipe is longitudinally arranged in the middle of the reaction container, and the lower end of the water inlet pipe is communicated with the lower end of each reaction zone;
the domestic sewage treatment specifically comprises the following steps:
(1) in the water inlet stage, domestic sewage to be treated flows into each reaction area from the bottom of the reaction container through a water inlet pipe;
(2) the aeration stage comprises a first aeration stage and a second aeration stage, and the first aeration stage and the second aeration stage are sequentially carried out in each reaction zone; firstly, the first reaction zone is firstly subjected to a first aeration phase, when the first reaction zone finishes the first aeration phase and enters a second aeration phase, the second reaction zone is subjected to the first aeration phase, when the second reaction zone finishes the first aeration phase and enters the second aeration phase, the third reaction zone is subjected to the first aeration phase, when the third reaction zone finishes the first aeration phase and enters the second aeration phase, the fourth reaction zone is subjected to the first aeration phase, and the steps are circulated in sequence; the aeration device at least comprises four aeration mechanisms, each aeration mechanism is respectively arranged at the bottom of each reaction zone, and the control mechanism controls the opening and closing of each aeration mechanism so as to carry out the aeration stage of each reaction zone;
(3) and a precipitation stage, wherein when the aeration stage is completed in sequence in each reaction zone, the precipitation stage is performed in sequence; when the first reaction zone finishes the second aeration phase and enters the precipitation phase, the second reaction zone carries out the second aeration phase, when the second reaction zone finishes the second aeration phase and enters the precipitation phase, the third reaction zone carries out the second aeration phase, when the third reaction zone finishes the second aeration phase and enters the precipitation phase, the fourth reaction zone carries out the second aeration phase, and the steps are circulated in sequence;
(4) and a continuous water inlet and outlet stage, wherein when the reaction zones sequentially complete the precipitation stage, the reactions sequentially perform the continuous water inlet and outlet stage; when the first reaction zone finishes the precipitation stage and enters the continuous water inlet and outlet stage, the second reaction zone carries out the precipitation stage, when the second reaction zone finishes the precipitation stage and enters the continuous water inlet and outlet stage, the third reaction zone carries out the precipitation stage, when the third reaction zone finishes the precipitation stage and enters the continuous water inlet and outlet stage, the fourth reaction zone carries out the precipitation stage, and the steps are circulated in sequence; the drainage mechanism at least comprises four water outlet pipes and four electric water valves, the upper end of each reaction zone is respectively provided with a water outlet, the water level height of the water outlet of each water outlet is lower than the water level height of the upper end of the water inlet pipe, each water outlet pipe is respectively communicated with each water outlet through each electric water valve, each electric water valve is electrically connected with the control mechanism, and the water outlet of each reaction zone controls the opening and closing of each electric valve by using the control mechanism, so that the continuous water inlet and outlet stages of each reaction zone are carried out and are sequentially circulated;
(5) and (4) repeating the steps (2) to (4).
The aeration device further comprises an air blower and at least four electric air valves, the four electric air valves comprise a first electric air valve, a second electric air valve, a third electric air valve and a fourth electric air valve, the four aeration mechanisms comprise a first aeration mechanism, a second aeration mechanism, a third aeration mechanism and a fourth aeration mechanism, the first aeration mechanism, the second aeration mechanism, the third aeration mechanism and the fourth aeration mechanism are respectively arranged at the bottom of the first reaction zone, the second reaction zone, the third reaction zone and the fourth reaction zone, the aeration port of each aeration mechanism is higher than the lower end of the partition plate, the first aeration mechanism, the second aeration mechanism, the third aeration mechanism and the fourth aeration mechanism are respectively communicated with the air blower through the first electric air valve, the second electric air valve, the third electric air valve and the fourth electric air valve, and the air blower, The first electric air valve, the second electric air valve, the third electric air valve and the fourth electric air valve are respectively and electrically connected with the control mechanism; the aeration phase further comprises the steps of:
(21) the control mechanism controls the blower and the first electric air valve to be opened, so that the first aeration mechanism aerates the domestic sewage to be treated in the first reaction zone;
(22) when the domestic sewage to be treated in the first reaction zone enters a second aeration stage after the first aeration stage is finished, the control mechanism controls the second electric air valve to be opened, so that the second aeration mechanism aerates the domestic sewage to be treated in the second reaction zone;
(23) when the domestic sewage to be treated in the first reaction zone enters a precipitation stage after the second aeration stage, the control mechanism controls the first electric air valve to be closed, the first aeration mechanism stops aeration, and at the moment, when the domestic sewage to be treated in the second reaction zone enters the second aeration stage after the first aeration stage, the control mechanism controls the third electric air valve to be opened, so that the third aeration mechanism aerates the domestic sewage to be treated in the third reaction zone;
(24) when the domestic sewage to be treated in the second reaction zone enters the precipitation stage after the second aeration stage, the control mechanism controls the second electric air valve to be closed, the second aeration mechanism stops aeration, and at the moment, when the domestic sewage to be treated in the third reaction zone enters the second aeration stage after the first aeration stage, the control mechanism controls the fourth electric air valve to be opened, so that the fourth aeration mechanism aerates the domestic sewage to be treated in the fourth reaction zone.
The time of the aeration period is 0.5 to 2 hours
The time of the first aeration period is 0.25 to 0.75 hours.
The time of the precipitation stage is 0.3 to 0.8 hours.
The time of the continuous water inlet and outlet stage is 0.3 to 0.8 hour.
Four the outlet pipe includes first outlet pipe, second outlet pipe, third outlet pipe, fourth outlet pipe, four electronic water valve includes first electronic water valve, the electronic water valve of second, the electronic water valve of third, the electronic water valve of fourth, first outlet pipe, second outlet pipe, third outlet pipe, fourth outlet pipe pass through respectively first electronic water valve, the electronic water valve of second, the electronic water valve of third, the electronic water valve of fourth with the delivery port intercommunication of first reaction zone, second reaction zone, third reaction zone, fourth reaction zone, the electronic water valve of first electronic water valve, the electronic water valve of second, the electronic water valve of third, fourth respectively with control mechanism electric connection, the continuous business turn over water stage still includes following step:
(41) when the first reaction zone finishes the precipitation stage, the control mechanism controls the first electric water valve to open, so that water subjected to precipitation treatment in the first reaction zone is discharged from the first water outlet pipe, domestic sewage to be treated continuously flows into the first reaction zone from the water inlet pipe, and the continuous water inlet and outlet stage of the first reaction zone is carried out;
(42) when the first reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the first electric water valve to be closed, and simultaneously, the control mechanism controls the second electric water valve to be opened, so that water subjected to precipitation treatment in the second reaction zone is discharged from the second water outlet pipe, domestic sewage to be treated continuously flows into the second reaction zone from the water inlet pipe, and the continuous water inlet and outlet stage of the second reaction zone is carried out;
(43) when the second reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the second electric water valve to be closed, and simultaneously, the control mechanism controls the third electric water valve to be opened, so that water subjected to precipitation treatment in the third reaction zone is discharged from the third water outlet pipe, and domestic sewage to be treated continuously flows into the third reaction zone from the water inlet pipe to perform the continuous water inlet and outlet stage of the third reaction zone;
(44) and when the third reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the third electric water valve to be closed, and simultaneously, the control mechanism controls the fourth electric water valve to be opened, so that the water subjected to precipitation treatment in the fourth reaction zone is discharged from the fourth water outlet pipe, and the domestic sewage to be treated continuously flows into the fourth reaction zone from the water inlet pipe to carry out the continuous water inlet and outlet stage of the fourth reaction zone.
Detecting the domestic sewage to be treated, and determining that the domestic sewage to be treated is first domestic sewage to be treated, wherein the indexes of the first domestic sewage to be treated are as follows: q is 1000m3NH4 < + > -N is 15mg/L sewage, and the time of the continuous water inlet and outlet stage, the first aeration stage, the second aeration stage and the precipitation stage for treating the first domestic sewage to be treated is 0.3 hour, and the method comprises the following steps:
(6) the control mechanism controls the opening of a first electric water valve, so that water subjected to precipitation treatment in the first reaction zone is discharged from the first water outlet pipe, the first domestic sewage to be treated flows into the first reaction zone from the water inlet pipe, the first reaction zone is subjected to continuous water inlet and outlet stages, and the opening time of the first electric water valve is 0.3 hour;
(7) when the first reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the first electric water valve to be closed, the control mechanism controls the first electric air valve to be opened, so that the first aeration mechanism aerates the first domestic sewage to be treated, the opening time of the first electric air valve is 0.6 hour, meanwhile, the control mechanism controls the second electric water valve to be opened, so that the water subjected to precipitation treatment in the second reaction zone is discharged from the second water outlet pipe, the first domestic sewage to be treated flows into the second reaction zone from the water inlet pipe, the second reaction zone carries out the continuous water inlet and outlet stage, and the opening time of the second electric water valve is 0.3 hour;
(8) when the second reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the second electric water valve to be closed, the control mechanism controls the second electric air valve to be opened, so that the second aeration mechanism aerates the first domestic sewage to be treated, the opening time of the second electric air valve is 0.6 hour, meanwhile, the control mechanism controls the third electric water valve to be opened, so that the water subjected to precipitation treatment in the third reaction zone is discharged from the third water outlet pipe, the first domestic sewage to be treated flows into the third reaction zone from the water inlet pipe, the third reaction zone carries out the continuous water inlet and outlet stage, and the opening time of the third electric water valve is 0.3 hour;
(9) when the third reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the third electric water valve to be closed, the control mechanism controls the third electric air valve to be opened, so that the third aeration mechanism aerates the first domestic sewage to be treated, the opening time of the third electric air valve is 0.6 hour, meanwhile, the control mechanism controls the fourth electric water valve to be opened, so that the water subjected to precipitation treatment in the fourth reaction zone is discharged from the fourth water outlet pipe, the first domestic sewage to be treated flows into the fourth reaction zone from the water inlet pipe, the fourth reaction zone carries out the continuous water inlet and outlet stage, and the opening time of the fourth electric water valve is 0.3 hour; at the moment, the first domestic sewage to be treated in the first reaction zone completes an aeration stage, the control mechanism controls the first electric air valve to be closed, and the first domestic sewage to be treated in the first reaction zone enters a precipitation stage;
(10) when the fourth reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the fourth electric water valve to be closed, the control mechanism controls the fourth electric air valve to be opened, so that the fourth aeration mechanism aerates the first domestic sewage to be treated, the opening time of the fourth electric air valve is 0.6 hour, at the moment, the first domestic sewage to be treated in the first reaction zone finishes the precipitation stage, the first domestic sewage to be treated in the second reaction zone finishes the aeration stage, the control mechanism controls the second electric air valve to be closed, and the first domestic sewage to be treated in the second reaction zone enters the precipitation stage; and (4) repeating the steps (6) to (9).
Detecting the domestic sewage to be treated, and determining that the domestic sewage to be treated is second domestic sewage to be treated, wherein the indexes of the second domestic sewage to be treated are as follows: q is 1000m3NH4 < + > -N is 30mg/L, and the time of the continuous water inlet and outlet stage, the first aeration stage, the second aeration stage and the precipitation stage for treating the second domestic sewage to be treated is 0.5 hour。
Detecting the domestic sewage to be treated, and determining that the domestic sewage to be treated is third domestic sewage to be treated, wherein the indexes of the third domestic sewage to be treated are as follows: q is 1000m3And/h, NH4 < + > -N is 50mg/L sewage, and the time of the continuous water inlet and outlet stage, the first aeration stage, the second aeration stage and the precipitation stage for treating the third domestic sewage to be treated is 0.5 hour.
A continuous flow SBR domestic sewage treatment device for implementing the method of claim 1, which comprises a reaction vessel, a partition plate, a plurality of electric water valves, a plurality of water outlet pipes, a water inlet pipe, an aeration device and a control mechanism, wherein the partition plate longitudinally partitions the interior of the reaction vessel into at least four reaction zones, the four reaction zones comprise a first reaction zone, a second reaction zone, a third reaction zone and a fourth reaction zone, a gap is arranged between the lower end of the partition plate and the bottom of the reaction vessel, the bottoms of the reaction zones are communicated with each other through the gap, the water inlet pipe is longitudinally arranged in the middle of the reaction vessel, and the lower end of the water inlet pipe is communicated with the lower end of each reaction zone; the aeration device comprises a blower, a plurality of electric air valves and a plurality of aeration mechanisms, the number of the aeration mechanisms and the number of the electric air valves correspond to the number of the reaction zones, each aeration mechanism is respectively arranged at the bottom of each reaction zone, the aeration port of each aeration mechanism is higher than the lower end of the partition plate, and each aeration mechanism is respectively communicated with the blower through each electric air valve; the upper end of each reaction zone is respectively provided with a water outlet, each water outlet is respectively communicated with each water outlet pipe through each electric water valve, the water level height of the water outlet is lower than the water level height of the upper end of the water inlet pipe, and the air blower, the plurality of electric air valves and the plurality of electric water valves are respectively and electrically connected with the control mechanism.
It should be noted that:
the foregoing references to "first and second …" do not denote any particular quantity or order, but rather are used to distinguish one name from another.
In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The method and the device provided by the invention have the following advantages:
1. the continuous flow of water inlet and outlet is realized through the water level difference, and the volume utilization rate of the reaction container is improved.
2. The anoxic stirring stage is omitted, the process flow is shortened on the premise of ensuring that the effluent reaches five types of water on the ground (without TN requirement), and the load of the reaction vessel is improved.
3. The inside of the reaction vessel is divided by the partition plate, so that the continuous operation of each reaction zone is realized, and the integral structure of the reaction vessel is enhanced.
4. The equipment is simple, the unified water inlet is adopted, the trouble of multi-point water inlet is eliminated, the water outlet is in a self-flowing type, an additional water pump is not needed to be arranged to improve the water level for the treatment of the next process, and the requirement on an automatic control system is reduced.
5. Compared with the traditional activated sludge method, the method has the advantages of treating sewage in the same standard and reducing occupied land.
6. The lower parts of the reaction zones are communicated and are arranged in the same reaction container, so that the sludge backflow is not needed, the sludge is long, and the ammonia nitrogen treatment effect is good.
Drawings
FIG. 1 is a schematic view showing the overall construction of a continuous flow SBR domestic sewage treatment apparatus according to the present invention.
Fig. 2 is a schematic sectional view of a-a in fig. 1.
Fig. 3 is a schematic cross-sectional view of B-B in fig. 1.
Description of reference numerals:
10. the system comprises a reaction container, 11, a first reaction zone, 12, a second reaction zone, 13, a third reaction zone, 14, a fourth reaction zone, 20, a partition plate, 30, an electric water valve, 31, a first electric water valve, 32, a second electric water valve, 33, a third electric water valve, 34, a fourth electric water valve, 40, a water outlet pipe, 50, a water inlet pipe, 60, an aeration device, 61, a blower, 62, an electric air valve, 621, a first electric air valve, 622, a second electric air valve, 623, a third electric air valve, 624, a fourth electric air valve, 63, an aeration mechanism, 631, a micropore aerator, 70 and an overflow weir.
Detailed Description
Referring to fig. 1 to 3, embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
The continuous flow SBR domestic sewage treatment method provided by the embodiment of the invention comprises the following steps: the method comprises the steps that a continuous flow SBR domestic sewage treatment device is preset and comprises a reaction container 10, a partition plate 20, a drainage mechanism, a water inlet pipe 50, an aeration device 60 and a control mechanism, wherein the partition plate 20 divides the interior of the reaction container 10 into at least four reaction zones, and the four reaction zones comprise a first reaction zone 11, a second reaction zone 12, a third reaction zone 13 and a fourth reaction zone 14; the bottoms of the reaction zones are communicated with each other, the water inlet pipe 50 is longitudinally arranged in the middle part in the reaction vessel 10, and the lower end of the water inlet pipe 50 is communicated with the lower end of each reaction zone;
the domestic sewage treatment method specifically comprises the following steps:
(1) in the water inlet stage, the domestic sewage to be treated flows into each reaction zone from the bottom of the reaction container 10 through a water inlet pipe 50;
(2) the aeration stage comprises a first aeration stage and a second aeration stage, and the first aeration stage and the second aeration stage are sequentially carried out in each reaction zone; firstly, a first aeration stage is carried out in a first reaction zone 11, when the first aeration stage is finished in the first reaction zone 11 and the first reaction zone enters a second aeration stage, the first aeration stage is carried out in a second reaction zone 12, when the first aeration stage is finished in the second reaction zone 12 and the second aeration stage enters, the first aeration stage is carried out in a third reaction zone 13, and when the first aeration stage is finished in the third reaction zone 13 and the second aeration stage enters, the first aeration stage is carried out in a fourth reaction zone 14, and the circulation is carried out in sequence; wherein the aeration device 60 at least comprises four aeration mechanisms 63, each aeration mechanism 63 is respectively arranged at the bottom of each reaction zone, and the control mechanism controls the opening and closing of each aeration mechanism 63 so as to carry out the aeration stage of each reaction zone;
(3) and a sedimentation stage, wherein when the aeration stage is completed in turn in each reaction zone, the sedimentation stage is carried out in turn; when the first reaction zone 11 finishes the second aeration period and enters the precipitation period, the second reaction zone 12 carries out the second aeration period, when the second reaction zone 12 finishes the second aeration period and enters the precipitation period, the third reaction zone 13 carries out the second aeration period, when the third reaction zone 13 finishes the second aeration period and enters the precipitation period, the fourth reaction zone 14 carries out the second aeration period, and the circulation is carried out in sequence;
(4) a continuous water inlet and outlet stage, wherein when the reaction zones finish the precipitation stage in sequence, each reaction is carried out with the continuous water inlet and outlet stage in sequence; when the first reaction zone 11 finishes the precipitation stage and enters the continuous water inlet and outlet stage, the second reaction zone 12 carries out the precipitation stage, when the second reaction zone 12 finishes the precipitation stage and enters the continuous water inlet and outlet stage, the third reaction zone 13 carries out the precipitation stage, when the third reaction zone 13 finishes the precipitation stage and enters the continuous water inlet and outlet stage, the fourth reaction zone 14 carries out the precipitation stage, and the steps are circulated in sequence; the drainage mechanism at least comprises four water outlet pipes 40 and four electric water valves 30, the upper end of each reaction zone is respectively provided with a water outlet, the water level height of the water outlet of each water outlet is lower than the water level height of the upper end of a water inlet pipe 50, each water outlet pipe 40 is respectively communicated with each water outlet through each electric water valve 30, each electric water valve 30 is electrically connected with the control mechanism, the water outlet of each reaction zone controls the opening and closing of each electric valve by using the control mechanism, so that the continuous water inlet and outlet stages of each reaction zone are carried out, and the circulation is carried out in sequence;
(5) and (4) repeating the steps (2) to (4).
Wherein, the aeration device 60 further comprises a blower 61 and at least four electric air valves 62, the four electric air valves 62 comprise a first electric air valve 621, a second electric air valve 622, a third electric air valve 623 and a fourth electric air valve 624, the four aeration mechanisms 63 comprise a first aeration mechanism, a second aeration mechanism, a third aeration mechanism and a fourth aeration mechanism, the first aeration mechanism, the second aeration mechanism, the third aeration mechanism and the fourth aeration mechanism are respectively arranged at the bottom of the first reaction zone 11, the second reaction zone 12, the third reaction zone 13 and the fourth reaction zone 14, the aeration port of each aeration mechanism 63 is higher than the lower end of the partition plate 20, the first aeration mechanism, the second aeration mechanism, the third aeration mechanism and the fourth aeration mechanism are respectively communicated with the blower 61 through the first electric air valve 621, the second electric air valve 622, the third electric air valve 623 and the fourth electric air valve 624, the blower 61, the first electric air valve 621, the second electric air valve 622, the third electric air valve 623 and the fourth electric air valve 624 are respectively and electrically connected with the control mechanism; the aeration phase further comprises the steps of:
(21) the control mechanism controls the blower 61 and the first electric air valve 621 to be opened, so that the first aeration mechanism aerates the domestic sewage to be treated in the first reaction zone 11;
(22) when the domestic sewage to be treated in the first reaction zone 11 enters the second aeration stage after the first aeration stage, the control mechanism controls the second electric air valve 622 to be opened, so that the second aeration mechanism aerates the domestic sewage to be treated in the second reaction zone 12;
(23) when the domestic sewage to be treated in the first reaction zone 11 enters the precipitation stage after the second aeration stage, the control mechanism controls the first electric air valve 621 to be closed, the first aeration mechanism stops aeration, and at the moment, when the domestic sewage to be treated in the second reaction zone 12 enters the second aeration stage after the first aeration stage, the control mechanism controls the third electric air valve 623 to be opened, so that the third aeration mechanism aerates the domestic sewage to be treated in the third reaction zone 13;
(24) when the domestic sewage to be treated in the second reaction zone 12 enters the precipitation stage after the second aeration stage, the control mechanism controls the second electric air valve 622 to be closed, the second aeration mechanism stops aeration, and at the moment, when the domestic sewage to be treated in the third reaction zone 13 enters the second aeration stage after the first aeration stage, the control mechanism controls the fourth electric air valve 624 to be opened, so that the fourth aeration mechanism aerates the domestic sewage to be treated in the fourth reaction zone 14.
The time of the aeration period is 0.5 to 2 hours
Preferably, the time of the first aeration period is 0.25 to 0.75 hours.
The time of the precipitation stage is 0.3 to 0.8 hours.
The time for the continuous water inlet and outlet stage is 0.3 to 0.8 hours.
In another embodiment, the four water outlet pipes 40 include a first water outlet pipe, a second water outlet pipe, a third water outlet pipe and a fourth water outlet pipe, the four electric water valves 30 include a first electric water valve 31, a second electric water valve 32, a third electric water valve 33 and a fourth electric water valve 34, the first water outlet pipe, the second water outlet pipe, the third water outlet pipe and the fourth water outlet pipe are respectively communicated with the water outlets of the first reaction area 11, the second reaction area 12, the third reaction area 13 and the fourth reaction area 14 through the first electric water valve 31, the second electric water valve 32, the third electric water valve 33 and the fourth electric water valve 34, the first electric water valve 31, the second electric water valve 32, the third electric water valve 33 and the fourth electric water valve 34 are respectively electrically connected with the control mechanism, and the continuous water inlet and outlet stage further includes the following steps:
(41) when the first reaction zone 11 finishes the precipitation stage, the control mechanism controls the first electric water valve 31 to be opened, so that the water subjected to precipitation treatment in the first reaction zone 11 is discharged from the first water outlet pipe, and the domestic sewage to be treated continuously flows into the first reaction zone 11 from the water inlet pipe 50 to carry out the continuous water inlet and outlet stage of the first reaction zone 11;
(42) when the first reaction zone 11 finishes the continuous water inlet and outlet stage, the control mechanism controls the first electric water valve 31 to be closed, and simultaneously, the control mechanism controls the second electric water valve 32 to be opened, so that the water subjected to precipitation treatment in the second reaction zone 12 is discharged from the second water outlet pipe, the domestic sewage to be treated continuously flows into the second reaction zone 12 from the water inlet pipe 50, and the continuous water inlet and outlet stage of the second reaction zone 12 is carried out;
(43) when the second reaction zone 12 finishes the continuous water inlet and outlet stage, the control mechanism controls the second electric water valve 32 to be closed, and simultaneously, the control mechanism controls the third electric water valve 33 to be opened, so that the water subjected to precipitation treatment in the third reaction zone 13 is discharged from the third water outlet pipe, the domestic sewage to be treated continuously flows into the third reaction zone 13 from the water inlet pipe 50, and the continuous water inlet and outlet stage of the third reaction zone 13 is carried out;
(44) and when the third reaction zone 13 finishes the continuous water inlet and outlet stage, the control mechanism controls the third electric water valve 33 to be closed, and simultaneously, the control mechanism controls the fourth electric water valve 34 to be opened, so that the water subjected to precipitation treatment in the fourth reaction zone 14 is discharged from the fourth water outlet pipe, and the domestic sewage to be treated continuously flows into the fourth reaction zone 14 from the water inlet pipe 50 to carry out the continuous water inlet and outlet stage of the fourth reaction zone 14.
The continuous flow SBR domestic sewage treatment apparatus for implementing the above method provided in this embodiment includes a reaction vessel 10, a partition plate 20, a plurality of electric water valves 30, a plurality of water outlet pipes 40, a water inlet pipe 50, an aeration apparatus 60, and a control mechanism, where the partition plate 20 longitudinally partitions the interior of the reaction vessel 10 into at least four reaction zones, each of the four reaction zones includes a first reaction zone 11, a second reaction zone 12, a third reaction zone 13, and a fourth reaction zone 14, a gap is provided between the lower end of the partition plate 20 and the bottom of the reaction vessel 10, the bottoms of the reaction zones are communicated with each other through the gap, the water inlet pipe 50 is longitudinally installed in the middle of the reaction vessel 10, and the lower end of the water inlet pipe 50 is communicated with the lower end of; the aeration device 60 comprises a blower 61, a plurality of electric air valves 62 and a plurality of aeration mechanisms 63, the number of the aeration mechanisms 63 and the electric air valves 62 corresponds to the number of the reaction zones, each aeration mechanism 63 is respectively arranged at the bottom of each reaction zone, the aeration port of each aeration mechanism 63 is higher than the lower end of the partition plate 20, and each aeration mechanism 63 is respectively communicated with the blower 61 through each electric air valve 62; the upper end of each reaction zone is respectively provided with a water outlet, each water outlet is respectively communicated with each water outlet pipe 40 through each electric water valve 30, the water level height of each water outlet is lower than that of the upper end of the water inlet pipe 50, and the air blower 61, the plurality of electric air valves 62 and the plurality of electric water valves 30 are respectively electrically connected with the control mechanism.
When in use, the domestic sewage to be treated firstly flows into each reaction area from the bottom of the reaction container 10 through the water inlet pipe 50; then, carrying out an aeration phase, wherein the aeration phase comprises a first aeration phase and a second aeration phase, each reaction zone sequentially carries out the first aeration phase and the second aeration phase, the first aeration phase is firstly carried out in the first reaction zone 11, when the first aeration phase is finished in the first reaction zone 11 and the second aeration phase is entered in the second reaction zone, the first aeration phase is carried out in the second reaction zone 12, when the first aeration phase is finished in the second reaction zone 12 and the second aeration phase is entered in the second reaction zone 13, the first aeration phase is carried out in the third reaction zone 13, and when the first aeration phase is finished in the second aeration phase in the third reaction zone 13, the first aeration phase is carried out in the fourth reaction zone 14, and the circulation is sequentially carried out; then carrying out a precipitation stage, and when the aeration stage is completed in each reaction zone in sequence, carrying out the precipitation stage in sequence; when the first reaction zone 11 finishes the second aeration period and enters the precipitation period, the second reaction zone 12 carries out the second aeration period, when the second reaction zone 12 finishes the second aeration period and enters the precipitation period, the third reaction zone 13 carries out the second aeration period, when the third reaction zone 13 finishes the second aeration period and enters the precipitation period, the fourth reaction zone 14 carries out the second aeration period, and the circulation is carried out in sequence;
the device divides the space of the traditional SBR reaction vessel 10, and divides the interior of the reaction vessel 10 by the partition plate 20, thereby not only realizing the continuous operation of each reaction zone, but also strengthening the integral structure of the reaction vessel 10, realizing the process design of continuous water inlet and outlet flow by utilizing the water level pressure difference, improving the volume utilization rate of the reaction vessel 10, arranging a water inlet pipe 50 in the middle of the reaction vessel 10 for unified water inlet, having simple equipment, adopting unified water inlet, saving the trouble of multi-point water inlet, adopting the self-flow type water outlet, needing no extra water pump to improve the water level for the treatment of the next process, reducing the requirement on an automatic control system, simplifying the automatic control program, communicating the lower parts of each reaction zone and being in the same reaction vessel 10, needing no sludge backflow, having long sludge and having good ammonia nitrogen treatment effect; meanwhile, an anoxic stirring link is omitted, and the treatment period duration is shortened on the premise of ensuring that the effluent reaches five types of water on the ground surface.
The invention also comprises a sludge discharge pipe and a plurality of overflow weirs 70, wherein each overflow weir 70 is respectively arranged outside the upper end of each reaction zone, each water outlet is respectively communicated with the upper end of each reaction zone through each overflow weir 70, and the water inlet level at the upper end of each overflow weir 70 is lower than the water level at the upper end of the water inlet pipe 50. And each reaction zone discharges treated water from a water outlet after passing through the overflow weir 70, so that the discharged water meets the environmental protection requirement of surface water. The bottom of the reaction vessel 10 is provided with a sludge discharge port, and a sludge discharge pipe is communicated with the inside of the reaction vessel 10 through the sludge discharge port. The sludge is removed.
Preferably, the inlet water level at the upper end of each overflow weir 70 is lower than the water level at the upper end of the water inlet pipe 50 by 0.2m, and the outlet water level at each outlet is lower than the water level at the upper end of the water inlet pipe 50 by 0.4 m. Ensure the water level pressure difference between the sewage flowing in from the water inlet pipe 50 and the treated water flowing out from the water outlet, and ensure the continuous flow of the inlet water and the outlet water.
Wherein, the aeration mechanism 63 comprises a plurality of microporous aerators 631, the microporous aerators 631 are uniformly arranged at the bottom of the reaction zone, and the aeration port of each microporous aerator 631 is higher than the lower end of the partition plate 20. A plurality of micro-porous aerators 631 effect aeration of each reaction zone.
The plurality of electric air valves 62 comprise a first electric air valve 621, a second electric air valve 622, a third electric air valve 623 and a fourth electric air valve 624, the plurality of aeration mechanisms 63 comprise a first aeration mechanism, a second aeration mechanism, a third aeration mechanism and a fourth aeration mechanism, the first aeration mechanism, the second aeration mechanism, the third aeration mechanism and the fourth aeration mechanism are respectively arranged at the bottoms of the first reaction zone 11, the second reaction zone 12, the third reaction zone 13 and the fourth reaction zone 14, the aeration port of each aeration mechanism 63 is higher than the lower end of the partition plate 20, the first aeration mechanism, the second aeration mechanism, the third aeration mechanism and the fourth aeration mechanism are respectively communicated with the blower 61 through the first electric air valve 621, the second electric air valve 622, the third electric air valve 623 and the fourth electric air valve 624, the 621, the first electric air valve, the second electric air valve 622, the third electric air valve 623, the fourth electric air valve 623, the blower fan blower, The fourth electric air valve 624 is electrically connected to the control mechanism. The time-division control of each aeration mechanism 63 is realized.
The plurality of water outlet pipes 40 include a first water outlet pipe, a second water outlet pipe, a third water outlet pipe and a fourth water outlet pipe, the plurality of electric water valves 30 include a first electric water valve 31, a second electric water valve 32, a third electric water valve 33 and a fourth electric water valve 34, the first water outlet pipe, the second water outlet pipe, the third water outlet pipe and the fourth water outlet pipe are respectively communicated with the water outlets of the first reaction area 11, the second reaction area 12, the third reaction area 13 and the fourth reaction area 14 through the first electric water valve 31, the second electric water valve 32, the third electric water valve 33 and the fourth electric water valve 34, and the first electric water valve 31, the second electric water valve 32, the third electric water valve 33 and the fourth electric water valve 34 are respectively electrically connected with the control mechanism. And the time-interval drainage control of each water outlet is realized.
The reaction vessel 10 has a cylindrical shape. The construction is simple. The reaction vessel 10 and the partition plate 20 are made of steel plates. Convenient material taking, stable structure and cost saving.
Example two:
the continuous flow SBR domestic sewage treatment method and the device provided by the embodiment of the invention are basically the same as the first embodiment, and the difference is that:
detecting domestic sewage to be treated, and determining the domestic sewage to be treated as first domestic sewage to be treated, wherein the indexes of the first domestic sewage to be treated are as follows: q is 1000m3NH4 < + > -N is 15mg/L sewage, the time of the continuous water inlet and outlet stage, the first aeration stage, the second aeration stage and the precipitation stage for treating the first domestic sewage to be treated is 0.3 hour, and the treatment method also comprises the following steps:
(6) the control mechanism controls the first electric water valve 31 to be opened, so that water subjected to precipitation treatment in the first reaction zone 11 is discharged from the first water outlet pipe, the first domestic sewage to be treated flows into the first reaction zone 11 from the water inlet pipe 50, the first reaction zone 11 is subjected to a continuous water inlet and outlet stage, and the opening time of the first electric water valve 31 is 0.3 hour;
(7) when the first reaction zone 11 finishes the continuous water inlet and outlet stage, the control mechanism controls the first electric water valve 31 to be closed, the control mechanism controls the first electric air valve 621 to be opened, so that the first aeration mechanism aerates the first domestic sewage to be treated, the opening time of the first electric air valve 621 is 0.6 hour, meanwhile, the control mechanism controls the second electric water valve 32 to be opened, so that the water subjected to precipitation treatment in the second reaction zone 12 is discharged from the second water outlet pipe, the first domestic sewage to be treated flows into the second reaction zone 12 from the water inlet pipe 50, the second reaction zone 12 carries out the continuous water inlet and outlet stage, and the opening time of the second electric water valve 32 is 0.3 hour;
(8) when the second reaction zone 12 finishes the continuous water inlet and outlet stage, the control mechanism controls the second electric water valve 32 to be closed, the control mechanism controls the second electric air valve 622 to be opened, so that the second aeration mechanism aerates the first domestic sewage to be treated, the opening time of the second electric air valve 622 is 0.6 hour, meanwhile, the control mechanism controls the third electric water valve 33 to be opened, so that the water subjected to precipitation treatment in the third reaction zone 13 is discharged from the third water outlet pipe, the first domestic sewage to be treated flows into the third reaction zone 13 from the water inlet pipe 50, the third reaction zone 13 carries out the continuous water inlet and outlet stage, and the opening time of the third electric water valve 33 is 0.3 hour;
(9) when the third reaction zone 13 finishes the continuous water inlet and outlet stage, the control mechanism controls the third electric water valve 33 to be closed, the control mechanism controls the third electric air valve 623 to be opened, so that the third aeration mechanism aerates the first domestic sewage to be treated, the opening time of the third electric air valve 623 is 0.6 hour, meanwhile, the control mechanism controls the fourth electric water valve 34 to be opened, so that the water subjected to precipitation treatment in the fourth reaction zone 14 is discharged from the fourth water outlet pipe, the first domestic sewage to be treated flows into the fourth reaction zone 14 from the water inlet pipe 50, the fourth reaction zone 14 carries out the continuous water inlet and outlet stage, and the opening time of the fourth electric water valve 34 is 0.3 hour; at this time, the first domestic sewage to be treated in the first reaction zone 11 completes the aeration stage, the control mechanism controls the first electric air valve 621 to close, and the first domestic sewage to be treated in the first reaction zone 11 enters the precipitation stage;
(10) when the fourth reaction zone 14 completes the continuous water inlet and outlet stage, the control mechanism controls the fourth electric water valve 34 to close, the control mechanism controls the fourth electric air valve 624 to open, so that the fourth aeration mechanism aerates the first domestic sewage to be treated, the opening time of the fourth electric air valve 624 is 0.6 hour, at this time, the first domestic sewage to be treated in the first reaction zone 11 completes the precipitation stage, the first domestic sewage to be treated in the second reaction zone 12 completes the aeration stage, the control mechanism controls the second electric air valve 622 to close, and the first domestic sewage to be treated in the second reaction zone 12 enters the precipitation stage; and (4) repeating the steps (6) to (9).
Example three:
the continuous flow SBR domestic sewage treatment method and the device provided by the embodiment of the invention are basically the same as the first embodiment, and the difference is that:
detecting the domestic sewage to be treated, and determining the domestic sewage to be treated as second domestic sewage to be treated, wherein the indexes of the second domestic sewage to be treated are as follows: q is 1000m3NH4 < + > -N is 30mg/L, and the time of the continuous water inlet and outlet stage, the first aeration stage, the second aeration stage and the precipitation stage for treating the second domestic sewage to be treated is 0.5 hour.
Example four:
the continuous flow SBR domestic sewage treatment method and the device provided by the embodiment of the invention are basically the same as the first to the third embodiments, and the difference is that:
detecting the domestic sewage to be treated, and determining the domestic sewage to be treated as third domestic sewage to be treated, wherein the indexes of the third domestic sewage to be treated are as follows: q is 1000m3And h, NH4 < + > -N is 50mg/L sewage, and the time of the continuous water inlet and outlet stage, the first aeration stage, the second aeration stage and the precipitation stage for treating the third domestic sewage to be treated is 0.5 hour.
The above embodiments have the following advantages:
1. the continuous flow of water inlet and outlet is realized through the water level difference, and the volume utilization rate of the reaction container 10 is improved.
2. The anoxic stirring stage is omitted, the process flow is shortened on the premise of ensuring that the effluent reaches five types of water on the ground (without TN requirement), and the load of the reaction vessel 10 is increased.
3. The interior of the reaction vessel 10 is partitioned by the partition plate 20, thereby not only realizing the continuous operation of each reaction zone, but also strengthening the overall structure of the reaction vessel 10.
4. The equipment is simple, the unified water inlet is adopted, the trouble of multi-point water inlet is eliminated, the water outlet is in a self-flowing type, an additional water pump is not needed to be arranged to improve the water level for the treatment of the next process, and the requirement on an automatic control system is reduced.
5. Compared with the traditional activated sludge method, the method has the advantages of treating sewage in the same standard and reducing occupied land.
6. The lower parts of the reaction zones are communicated and are arranged in the same reaction container 10, so that the sludge backflow is not needed, the sludge is long, and the ammonia nitrogen treatment effect is good.
The above are merely specific embodiments of the present invention, and the scope of the present invention is not limited thereby; any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.

Claims (10)

1. A continuous flow SBR domestic sewage treatment method is characterized by comprising the following steps:
the method comprises the following steps of presetting a continuous flow SBR domestic sewage treatment device, wherein the continuous flow SBR domestic sewage treatment device comprises a reaction container, a partition plate, a drainage mechanism, a water inlet pipe, an aeration device and a control mechanism, wherein the partition plate divides the interior of the reaction container into at least four reaction zones, and the four reaction zones comprise a first reaction zone, a second reaction zone, a third reaction zone and a fourth reaction zone; the bottoms of the reaction zones are communicated with each other, the water inlet pipe is longitudinally arranged in the middle of the reaction container, and the lower end of the water inlet pipe is communicated with the lower end of each reaction zone;
the domestic sewage treatment specifically comprises the following steps:
(1) in the water inlet stage, domestic sewage to be treated flows into each reaction area from the bottom of the reaction container through a water inlet pipe;
(2) the aeration stage comprises a first aeration stage and a second aeration stage, and the first aeration stage and the second aeration stage are sequentially carried out in each reaction zone; firstly, the first reaction zone is firstly subjected to a first aeration phase, when the first reaction zone finishes the first aeration phase and enters a second aeration phase, the second reaction zone is subjected to the first aeration phase, when the second reaction zone finishes the first aeration phase and enters the second aeration phase, the third reaction zone is subjected to the first aeration phase, when the third reaction zone finishes the first aeration phase and enters the second aeration phase, the fourth reaction zone is subjected to the first aeration phase, and the steps are circulated in sequence; the aeration device at least comprises four aeration mechanisms, each aeration mechanism is respectively arranged at the bottom of each reaction zone, and the control mechanism controls the opening and closing of each aeration mechanism so as to carry out the aeration stage of each reaction zone;
(3) and a precipitation stage, wherein when the aeration stage is completed in sequence in each reaction zone, the precipitation stage is performed in sequence; when the first reaction zone finishes the second aeration phase and enters the precipitation phase, the second reaction zone carries out the second aeration phase, when the second reaction zone finishes the second aeration phase and enters the precipitation phase, the third reaction zone carries out the second aeration phase, when the third reaction zone finishes the second aeration phase and enters the precipitation phase, the fourth reaction zone carries out the second aeration phase, and the steps are circulated in sequence;
(4) and a continuous water inlet and outlet stage, wherein when the reaction zones sequentially complete the precipitation stage, the reactions sequentially perform the continuous water inlet and outlet stage; when the first reaction zone finishes the precipitation stage and enters the continuous water inlet and outlet stage, the second reaction zone carries out the precipitation stage, when the second reaction zone finishes the precipitation stage and enters the continuous water inlet and outlet stage, the third reaction zone carries out the precipitation stage, when the third reaction zone finishes the precipitation stage and enters the continuous water inlet and outlet stage, the fourth reaction zone carries out the precipitation stage, and the steps are circulated in sequence; the drainage mechanism at least comprises four water outlet pipes and four electric water valves, the upper end of each reaction zone is respectively provided with a water outlet, the water level height of the water outlet of each water outlet is lower than the water level height of the upper end of the water inlet pipe, each water outlet pipe is respectively communicated with each water outlet through each electric water valve, each electric water valve is electrically connected with the control mechanism, and the water outlet of each reaction zone controls the opening and closing of each electric valve by using the control mechanism, so that the continuous water inlet and outlet stages of each reaction zone are carried out and are sequentially circulated;
(5) and (4) repeating the steps (2) to (4).
2. The continuous-flow SBR domestic sewage treatment method of claim 1, wherein the aeration device further comprises a blower and at least four electric air valves, wherein the four electric air valves comprise a first electric air valve, a second electric air valve, a third electric air valve and a fourth electric air valve, the four aeration mechanisms comprise a first aeration mechanism, a second aeration mechanism, a third aeration mechanism and a fourth aeration mechanism, the first aeration mechanism, the second aeration mechanism, the third aeration mechanism and the fourth aeration mechanism are respectively arranged at the bottom of the first reaction zone, the second reaction zone, the third reaction zone and the fourth reaction zone, the aeration port of each aeration mechanism is higher than the lower end of the partition plate, and the first aeration mechanism, the second aeration mechanism, the third aeration mechanism and the fourth aeration mechanism are respectively arranged through the first electric air valve, the second electric air valve, the third electric air valve and the fourth air valve, The third electric air valve and the fourth electric air valve are communicated with the air blower, and the air blower, the first electric air valve, the second electric air valve, the third electric air valve and the fourth electric air valve are respectively and electrically connected with the control mechanism; the aeration phase further comprises the steps of:
(21) the control mechanism controls the blower and the first electric air valve to be opened, so that the first aeration mechanism aerates the domestic sewage to be treated in the first reaction zone;
(22) when the domestic sewage to be treated in the first reaction zone enters a second aeration stage after the first aeration stage is finished, the control mechanism controls the second electric air valve to be opened, so that the second aeration mechanism aerates the domestic sewage to be treated in the second reaction zone;
(23) when the domestic sewage to be treated in the first reaction zone enters a precipitation stage after the second aeration stage, the control mechanism controls the first electric air valve to be closed, the first aeration mechanism stops aeration, and at the moment, when the domestic sewage to be treated in the second reaction zone enters the second aeration stage after the first aeration stage, the control mechanism controls the third electric air valve to be opened, so that the third aeration mechanism aerates the domestic sewage to be treated in the third reaction zone;
(24) when the domestic sewage to be treated in the second reaction zone enters the precipitation stage after the second aeration stage, the control mechanism controls the second electric air valve to be closed, the second aeration mechanism stops aeration, and at the moment, when the domestic sewage to be treated in the third reaction zone enters the second aeration stage after the first aeration stage, the control mechanism controls the fourth electric air valve to be opened, so that the fourth aeration mechanism aerates the domestic sewage to be treated in the fourth reaction zone.
3. The continuous-flow SBR domestic sewage treatment process as claimed in claim 2, wherein the aeration period is 0.5 to 2 hours.
4. The continuous-flow SBR domestic sewage treatment process of claim 3, wherein the first aeration period is 0.25 to 0.75 hours.
5. The continuous-flow SBR domestic sewage treatment process as claimed in claim 2, wherein the settling period is 0.3 to 0.8 hours.
6. The continuous-flow SBR domestic sewage treatment process of claim 2 wherein the time of the continuous inlet and outlet stage is 0.3 to 0.8 hours.
7. The continuous flow SBR domestic sewage treatment method of any one of the claims 2 to 6 wherein the four outlet pipes comprise a first outlet pipe, a second outlet pipe, a third outlet pipe and a fourth outlet pipe, the four electrically operated water valves comprise a first electrically operated water valve, a second electrically operated water valve, a third electrically operated water valve and a fourth electrically operated water valve, the first water outlet pipe, the second water outlet pipe, the third water outlet pipe and the fourth water outlet pipe are respectively communicated with the water outlets of the first reaction zone, the second reaction zone, the third reaction zone and the fourth reaction zone through the first electric water valve, the second electric water valve, the third electric water valve and the fourth electric water valve, first electronic water valve, electronic water valve of second, electronic water valve of third, electronic water valve of fourth respectively with control mechanism electric connection, the continuous business turn over water stage still includes following step:
(41) when the first reaction zone finishes the precipitation stage, the control mechanism controls the first electric water valve to open, so that water subjected to precipitation treatment in the first reaction zone is discharged from the first water outlet pipe, domestic sewage to be treated continuously flows into the first reaction zone from the water inlet pipe, and the continuous water inlet and outlet stage of the first reaction zone is carried out;
(42) when the first reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the first electric water valve to be closed, and simultaneously, the control mechanism controls the second electric water valve to be opened, so that water subjected to precipitation treatment in the second reaction zone is discharged from the second water outlet pipe, domestic sewage to be treated continuously flows into the second reaction zone from the water inlet pipe, and the continuous water inlet and outlet stage of the second reaction zone is carried out;
(43) when the second reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the second electric water valve to be closed, and simultaneously, the control mechanism controls the third electric water valve to be opened, so that water subjected to precipitation treatment in the third reaction zone is discharged from the third water outlet pipe, and domestic sewage to be treated continuously flows into the third reaction zone from the water inlet pipe to perform the continuous water inlet and outlet stage of the third reaction zone;
(44) and when the third reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the third electric water valve to be closed, and simultaneously, the control mechanism controls the fourth electric water valve to be opened, so that the water subjected to precipitation treatment in the fourth reaction zone is discharged from the fourth water outlet pipe, and the domestic sewage to be treated continuously flows into the fourth reaction zone from the water inlet pipe to carry out the continuous water inlet and outlet stage of the fourth reaction zone.
8. The continuous-flow SBR domestic sewage treatment method of claim 7, wherein the to-be-treated domestic sewage is detected, and the to-be-treated domestic sewage is detected as a first to-be-treated domestic sewage, and the first to-be-treated domestic sewage is characterized in that: q is 1000m3NH4+ -N15 mg/L sewage,the time of the continuous water inlet and outlet stage, the first aeration stage, the second aeration stage and the precipitation stage for treating the first domestic sewage to be treated is 0.3 hour, and the method comprises the following steps:
(6) the control mechanism controls the opening of a first electric water valve, so that water subjected to precipitation treatment in the first reaction zone is discharged from the first water outlet pipe, the first domestic sewage to be treated flows into the first reaction zone from the water inlet pipe, the first reaction zone is subjected to continuous water inlet and outlet stages, and the opening time of the first electric water valve is 0.3 hour;
(7) when the first reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the first electric water valve to be closed, the control mechanism controls the first electric air valve to be opened, so that the first aeration mechanism aerates the first domestic sewage to be treated, the opening time of the first electric air valve is 0.6 hour, meanwhile, the control mechanism controls the second electric water valve to be opened, so that the water subjected to precipitation treatment in the second reaction zone is discharged from the second water outlet pipe, the first domestic sewage to be treated flows into the second reaction zone from the water inlet pipe, the second reaction zone carries out the continuous water inlet and outlet stage, and the opening time of the second electric water valve is 0.3 hour;
(8) when the second reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the second electric water valve to be closed, the control mechanism controls the second electric air valve to be opened, so that the second aeration mechanism aerates the first domestic sewage to be treated, the opening time of the second electric air valve is 0.6 hour, meanwhile, the control mechanism controls the third electric water valve to be opened, so that the water subjected to precipitation treatment in the third reaction zone is discharged from the third water outlet pipe, the first domestic sewage to be treated flows into the third reaction zone from the water inlet pipe, the third reaction zone carries out the continuous water inlet and outlet stage, and the opening time of the third electric water valve is 0.3 hour;
(9) when the third reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the third electric water valve to be closed, the control mechanism controls the third electric air valve to be opened, so that the third aeration mechanism aerates the first domestic sewage to be treated, the opening time of the third electric air valve is 0.6 hour, meanwhile, the control mechanism controls the fourth electric water valve to be opened, so that the water subjected to precipitation treatment in the fourth reaction zone is discharged from the fourth water outlet pipe, the first domestic sewage to be treated flows into the fourth reaction zone from the water inlet pipe, the fourth reaction zone carries out the continuous water inlet and outlet stage, and the opening time of the fourth electric water valve is 0.3 hour; at the moment, the first domestic sewage to be treated in the first reaction zone completes an aeration stage, the control mechanism controls the first electric air valve to be closed, and the first domestic sewage to be treated in the first reaction zone enters a precipitation stage;
(10) when the fourth reaction zone finishes the continuous water inlet and outlet stage, the control mechanism controls the fourth electric water valve to be closed, the control mechanism controls the fourth electric air valve to be opened, so that the fourth aeration mechanism aerates the first domestic sewage to be treated, the opening time of the fourth electric air valve is 0.6 hour, at the moment, the first domestic sewage to be treated in the first reaction zone finishes the precipitation stage, the first domestic sewage to be treated in the second reaction zone finishes the aeration stage, the control mechanism controls the second electric air valve to be closed, and the first domestic sewage to be treated in the second reaction zone enters the precipitation stage; and (4) repeating the steps (6) to (9).
9. The continuous-flow SBR domestic sewage treatment method of claim 8, wherein the domestic sewage to be treated is detected, and the domestic sewage to be treated is determined as second domestic sewage to be treated, and the second domestic sewage to be treated has the following indexes: q is 1000m3NH4 < + > -N is 30mg/L sewage, and the time of the continuous water inlet and outlet stage, the first aeration stage, the second aeration stage and the precipitation stage for treating the second domestic sewage to be treated is 0.5 hour; determining that the domestic sewage to be treated is third domestic sewage to be treated, wherein the third domestic sewage to be treated isThe notation is: q is 1000m3And/h, NH4 < + > -N is 50mg/L sewage, and the time of the continuous water inlet and outlet stage, the first aeration stage, the second aeration stage and the precipitation stage for treating the third domestic sewage to be treated is 0.5 hour.
10. A continuous flow SBR domestic sewage treatment device for implementing the method of claim 1, which comprises a reaction vessel, a partition plate, a plurality of electric water valves, a plurality of water outlet pipes, a water inlet pipe, an aeration device and a control mechanism, wherein the partition plate longitudinally partitions the interior of the reaction vessel into at least four reaction zones, the four reaction zones comprise a first reaction zone, a second reaction zone, a third reaction zone and a fourth reaction zone, a gap is arranged between the lower end of the partition plate and the bottom of the reaction vessel, the bottoms of the reaction zones are communicated with each other through the gap, the water inlet pipe is longitudinally arranged in the middle of the reaction vessel, and the lower end of the water inlet pipe is communicated with the lower end of each reaction zone; the aeration device comprises a blower, a plurality of electric air valves and a plurality of aeration mechanisms, the number of the aeration mechanisms and the number of the electric air valves correspond to the number of the reaction zones, each aeration mechanism is respectively arranged at the bottom of each reaction zone, the aeration port of each aeration mechanism is higher than the lower end of the partition plate, and each aeration mechanism is respectively communicated with the blower through each electric air valve; the upper end of each reaction zone is respectively provided with a water outlet, each water outlet is respectively communicated with each water outlet pipe through each electric water valve, the water level height of the water outlet is lower than the water level height of the upper end of the water inlet pipe, and the air blower, the plurality of electric air valves and the plurality of electric water valves are respectively and electrically connected with the control mechanism.
CN201911079563.3A 2019-11-07 2019-11-07 Continuous flow SBR domestic sewage treatment method and device Withdrawn CN110950425A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114956313A (en) * 2022-05-09 2022-08-30 广东首汇蓝天工程科技有限公司 Sewage treatment method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114956313A (en) * 2022-05-09 2022-08-30 广东首汇蓝天工程科技有限公司 Sewage treatment method

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