CN111233256A - Satellite type distributed sewage treatment system and sewage treatment method - Google Patents

Satellite type distributed sewage treatment system and sewage treatment method Download PDF

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Publication number
CN111233256A
CN111233256A CN202010048447.1A CN202010048447A CN111233256A CN 111233256 A CN111233256 A CN 111233256A CN 202010048447 A CN202010048447 A CN 202010048447A CN 111233256 A CN111233256 A CN 111233256A
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sewage treatment
water
sewage
station
water quality
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Inventor
陈翠群
朱枭强
王国彬
谢洁云
钱湛祖
冯境华
邓丽琼
王靖萱
韩富全
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Zhaoqing Pengkai Environmental Protection Equipment Co ltd
Guangzhou Pengkai Environment Technology Co ltd
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Zhaoqing Pengkai Environmental Protection Equipment Co ltd
Guangzhou Pengkai Environment Technology Co ltd
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Priority to CN202010048447.1A priority Critical patent/CN111233256A/en
Publication of CN111233256A publication Critical patent/CN111233256A/en
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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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • 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
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/005—Processes using a programmable logic controller [PLC]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/14—NH3-N
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/22—O2
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

The invention discloses a satellite type distributed sewage treatment system and a method. The satellite type distributed sewage treatment system comprises at least one sewage treatment plant and at least one sewage treatment station, and the sewage amount is distributed by the water body dynamic feedback regulation management platform, so that the problem of insufficient sewage treatment capacity of the existing sewage treatment plant is solved, the difficult problems of narrow site selection range and high land cost of a newly-built sewage treatment plant are solved, the construction period is short, and the investment cost is low. The invention further discloses that the satellite type distributed sewage treatment system ensures the effluent quality after sewage treatment by arranging the sewage biochemical treatment device and the water quality and quantity monitoring station. In addition, the invention also discloses a sewage treatment method based on the satellite type distributed sewage treatment system.

Description

Satellite type distributed sewage treatment system and sewage treatment method
Technical Field
The disclosure relates to the field of sewage treatment, in particular to a sewage treatment system and a sewage treatment method.
Background
With the rapid development of economic society and the accelerated progress of urbanization, the population of large and medium-sized cities is increased, correspondingly, the sewage generated by life and production is increased day by day, the existing sewage treatment plants cannot meet the increasing water treatment requirements, and the sewage treatment infrastructure needs to be increased and improved. Most of the traditional sewage treatment plants in the current large and medium cities adopt a large-scale centralized sewage treatment mode so as to reduce the treatment cost, but the occupied area is wide.
However, the site selection of the newly-built large-scale centralized sewage treatment plant is difficult to determine in large and medium cities, and is mainly reflected in that: 1. the sewage pipe network main system of large and medium cities is basically built, and a newly-built sewage treatment plant needs to meet the planning requirements of drainage systems of various regions of cities, so the site selection is severely restricted; 2. the land in large and medium-sized cities is scarce or expensive, and if the land is removed in a land acquisition manner, the problems of high coordination difficulty, long construction period and the like can occur.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides the following.
According to one aspect of the present disclosure, a satellite distributed sewage treatment system includes:
at least one sewage treatment plant;
at least one sewage treatment station;
at least one main sewer pipe;
a plurality of branch sewage pipes connecting the sewage treatment station and the main sewage pipe;
a first water quality and quantity monitoring station arranged in the sewage treatment plant and the sewage treatment station;
a second water quality and quantity monitoring station arranged in the receiving water body;
the midway pump station is arranged on the main sewage pipe and the branch sewage pipe;
and the water body dynamic feedback adjustment management platform is used for adjusting and distributing the sewage amount of the sewage treatment plant and the sewage treatment plant through the midway pump station according to the water quality and water amount data monitored by the first water quality and water amount monitoring station and the second water quality and water amount monitoring station.
According to at least one embodiment of the present disclosure, the sewage treatment station includes a sewage biochemical treatment device. The sewage biochemical treatment device is of a multi-stage annular structure and comprises an inner ring and an outer ring; the bottom of the inner ring is paved with a communicated aeration system which is uniformly controlled by the same valve and a flowmeter, the middle part of the inner ring is provided with a three-phase separator, the three-phase separator is provided with a gas collecting chamber and a drainage pipe, a settling area is arranged above the three-phase separator, and inclined pipe packing is adopted in the settling area; and a plurality of groups of independently controlled aeration automatic regulating systems are laid on the outer ring.
According to at least one embodiment of the present disclosure, the sewage treatment station further includes a sewage pretreatment device, a sludge treatment device.
According to at least one embodiment of the present disclosure, the sewage biochemical treatment device adopts a modular assembly, and comprises the following steps: 1) according to the treatment scale and the water quality requirement of the project, carrying out parameter standardized calculation and structure integrated design, and establishing a sewage biochemical treatment device model; 2) splitting and modularizing a main body part of the treatment device, wherein the modules comprise a wallboard module, a three-phase separation module, a sedimentation module, an aeration system module, a disinfection module and an accessory module; 3) according to the requirements of the structural load of the device on the material performance, selecting a proper corrosion-resistant steel material, performing standard prefabrication and paint spraying on each modularized rear part in a production base, and then transporting to a project site; 4) the method comprises the following steps of on-site installation, wherein the process of on-site installation comprises the steps of firstly pouring equipment foundations, adjusting the level, drilling a bottom plate and performing corrosion and water resistance, a wallboard module, an aeration system module, a three-phase separation module, a precipitation module and a disinfection module are sequentially assembled in a welding mode, and corresponding pipe fittings and electric facilities need to be synchronously installed when the modules are installed.
According to at least one embodiment of the disclosure, the midway pumping stations comprise automatic regulation and control systems, and the water body dynamic feedback regulation and management platform distributes the sewage amount through the automatic regulation and control systems of the midway pumping stations.
According to at least one embodiment of the disclosure, the automatic regulation and control system of the midway pump station comprises an automatic pump regulation system, a water quantity measuring instrument, a control unit and a remote computer monitoring system, and the midway pump station collects water level and water quantity information and feeds the information back to a water body dynamic feedback regulation and management platform.
According to at least one embodiment of the present disclosure, the first water quality and quantity monitoring station includes a water quality on-line monitoring sensing instrument, a water level flow measuring instrument, a control unit and a remote computer monitoring system, and monitors the water quality and quantity of the received water body and feeds the water quality and quantity back to the water body dynamic feedback regulation management platform.
According to at least one embodiment of the disclosure, the water quality on-line monitoring sensing instrument of the first water quality and quantity monitoring station is installed at an adjacent river monitoring point.
According to at least one embodiment of the present disclosure, the second water quality and quantity monitoring station includes an automatic control system, a water quality online monitoring and sensing instrument, a water level and quantity measuring instrument, a control unit and a remote computer monitoring system, and monitors the water quality and quantity of the incoming water and the discharged water of the sewage treatment plant and each of the sewage treatment stations, and feeds the water quality and quantity back to the water body dynamic feedback regulation and management platform.
According to at least one embodiment of the disclosure, the water quality on-line monitoring sensing instrument in the second water quality and water quantity monitoring station is installed at the water inlet and the water outlet of the sewage biochemical treatment device.
According to at least one embodiment of the present disclosure, any one of the control units is connected to a corresponding remote computer monitoring system through an ethernet, and any one of the remote computer monitoring systems is connected to the water body dynamic feedback adjustment management platform.
According to another aspect of the present disclosure, a sewage treatment method using any one of the satellite distributed sewage treatment systems of the present disclosure includes the following steps:
s1: adjusting the amount of sewage distributed to the sewage treatment plants and any sewage treatment station through the dynamic water feedback adjustment management platform;
s2: the sewage is discharged after being treated by a sewage treatment plant or a sewage treatment station.
According to at least one embodiment of the present disclosure, step S1 further includes:
the water body dynamic feedback regulation management platform collects water level, water quantity and water quality information, calculates the sewage distribution amount through a built-in water quality model, feeds the sewage distribution amount back to the sewage treatment plants and each sewage treatment station, and distributes the sewage amount.
According to at least one embodiment of the present disclosure, the built-in water quality model distributes the amount of sewage in a calculation manner that:
if the sewage treatment plant and the plurality of sewage treatment stations are respectively A, B1, B2, B3 and … … Bn, the actual flow rates of the corresponding midway pump stations are respectively Q1, Q21, Q22, Q23 and … … Q2n, the designed flow rates are Q1, Q21, Q22, Q23 and … … Q2n, and the allowable deviation of the corresponding flow rates is +/-E1, +/-E21, +/-E22, +/-E23 and … … +/-E2 n;
when the actual flow rate Q1 of the sewage treatment plant is less than Q1-E1, namely the actual flow rate is lower than the designed water quantity range, the actual flow rate of one or more regulated sewage treatment stations is reduced, and the actual flow rate Q2n of the regulated sewage treatment stations is between Q2n and Q2n + E2 n; when the actual flow rate Q1 of the sewage treatment plant is more than Q1+ E1, namely the actual flow rate is higher than the designed water amount range, the actual flow rate of one or more regulated sewage treatment stations is increased, and the actual flow rate Q2n of the regulated sewage treatment stations is between Q2n-E2n and Q2 n.
According to at least one embodiment of the disclosure, the actual flow of the regulated sewage treatment station is always within the designed flow range, and the sewage treatment reaches the discharge standard.
According to at least one embodiment of the present disclosure, if the absolute value of the deviation between the actual flow rate Q2n and the design flow rate Q2n of the sewage treatment station is e2n, the regulated sewage treatment stations are regulated according to the size sequence of e2 n.
According to the technical scheme provided by the embodiment of the disclosure, the following technical effects are achieved: 1) the problems that the existing sewage plant can not meet the sewage treatment requirement and the newly built sewage plant is difficult to select the site are solved; 2) the quality of the treated sewage is ensured to be purified to reach the standard, and the treated sewage can be used as a supplementary water source of a receiving water body, so that the regulation effect of a reservoir is reduced, and the benign development of urban water circulation is realized; 3) the satellite type distributed sewage treatment system is built in a modular assembly mode, the cost is reduced by the production of a standardized assembly line, and meanwhile, the construction period is only about 1/3 of the traditional sewage treatment plant.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
FIG. 1 is an exemplary satellite distributed wastewater treatment system according to the present disclosure.
Reference numerals:
1-sewage treatment plant; 2-a first water quality and quantity monitoring station; 3-a second water quality and quantity monitoring station; 4-midway pumping station; 5, a water body dynamic feedback regulation management platform; 6-a sewage treatment station; 7-main sewage pipe; 8-branch sewage pipe; 91-treating discharge points reaching standards by a sewage treatment plant; and 92, treating a standard discharge point by the sewage treatment station.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The present disclosure provides a satellite distributed wastewater treatment system, see the schematic of fig. 1. The satellite type distributed sewage treatment system comprises at least one sewage treatment plant 1, at least one sewage treatment station 6, at least one main sewage pipe 7, a plurality of branch sewage pipes 8 connecting the sewage treatment station 6 and the main sewage pipes 7, a first water quality and water quantity monitoring station 2 arranged in a receiving water body, a second water quality and water quantity monitoring station 3 arranged in the sewage treatment plant 1 and the sewage treatment station 6, a midway pump station 4 arranged in the main sewage pipes 7 and the branch sewage pipes 8, and a water dynamic feedback regulation management platform 5, wherein the water dynamic feedback regulation management platform 5 is used for regulating and distributing the water quality and water quantity data of the first water quality and water quantity monitoring station 2 and the second water quality and water quantity monitoring station 3 according to the midway pump station 4, and the sewage quantity distributed to the sewage treatment plant 1 and the sewage treatment station 6 is regulated through the midway pump station 4.
The sewage treatment station 6 can share the sewage treatment pressure of the sewage treatment plant 1, ensure the water quality after sewage treatment to reach the standard and regulate the water quantity of the receiving water body.
Alternatively, the sewage treatment plant 1 is an existing sewage treatment plant, typically a large and medium sized sewage treatment plant already built for finished or commissioning use, and the sewage treatment station 6 is a newly built sewage treatment station. The "existing sewage treatment plant" in this disclosure is defined as: a sewage treatment plant/station/point already under construction or existing before the sewage treatment station 6 or the satellite distributed sewage treatment system. The satellite type distributed sewage treatment system utilizes a basically formed pipe network system and land resources, adopts a nearby water taking principle, is similar to a satellite type distribution mode, and is constructed by newly building a sewage treatment station 6 around the existing sewage treatment plant 1.
Optionally, the sewage treatment station 6 comprises a sewage biochemical treatment device. The sewage biochemical treatment device is of a multistage annular structure and is provided with an inner ring and an outer ring. And a plurality of groups of aeration automatic regulating systems which are independently controlled are laid on the outer ring, and proper dissolved oxygen can be provided for denitrification reaction and other biochemical reactions of the activated sludge by starting the outer ring aeration systems. The mud water of the outer ring flows to the inner ring through the perforated plate, an aeration system communicated with the inner ring is paved at the bottom of the inner ring and is uniformly controlled by the same valve and a flowmeter, a three-phase separator is arranged in the middle of the inner ring, a gas collecting chamber and a drainage pipe are arranged on the three-phase separator, a settling area is arranged above the three-phase separator, and inclined pipe packing is adopted in the settling area. The inner ring aeration system is started to provide sufficient dissolved oxygen for nitrification reaction and other biochemical reactions of the activated sludge, the sludge-water mixture enters the three-phase separator along with micro bubbles generated by aeration, gas is collected in the collection chamber and then discharged through the drainage pipe, negative pressure is formed after the gas is discharged, and the sludge-water is squeezed to supplement, so that part of the sludge-water is discharged to the outer ring under the gas stripping action, and unpowered self-circulation backflow is realized.
Optionally, the sewage biochemical treatment device is constructed in a module assembly manner, and the construction process is as follows: step one, according to the treatment scale and the water quality requirement of a project, carrying out parameter standardized calculation and structure integrated design, and establishing a sewage biochemical treatment device model; secondly, splitting and modularizing the main body part of the treatment device, wherein the modules mainly comprise a wallboard module, a three-phase separation module, a precipitation module, an aeration system module, a disinfection module and an accessory module; selecting a proper corrosion-resistant steel material to perform standardized prefabrication and paint spraying of each modularized rear part in a production base according to the requirement of the structural load of the device on the material performance, and then transporting the steel material to a project site; and step four, field installation, wherein the field installation process comprises the steps of pouring and leveling the equipment foundation, drilling a bottom plate, performing corrosion resistance and water resistance, assembling a wall plate module, an aeration system module, a three-phase separation module, a precipitation module and a disinfection module in sequence by adopting a welding mode, and installing corresponding pipe fittings and electric appliances synchronously when installing the modules.
Optionally, the sewage treatment station 6 further comprises a sewage pretreatment device and a sludge treatment device. The sewage pretreatment unit mainly comprises a grating and an adjusting tank, and a magnetic separation device can be added for sewage with higher solid suspended matter content (SS) in the inlet water; the sludge disposal device mainly comprises a sludge concentration tank, a dosing device and a filter press.
Optionally, the midway pumping station 4 is provided with an automatic regulation and control system, which comprises a water level and water amount measuring instrument, a control unit and a monitoring system. And the midway pump station 4 collects water level and water quantity information, feeds the water level and water quantity information back to the water body dynamic feedback regulation management platform 5, and distributes the sewage quantity according to the instruction of the water body dynamic feedback regulation management platform 5.
Optionally, a first water quality and water quantity monitoring station 2 is arranged at the receiving water body, and is used for monitoring water quality and water quantity data of the receiving water body and feeding the data back to the water body dynamic feedback regulation management platform.
Alternatively, the water quality on-line monitoring sensor meter in the first water quality and water quantity monitoring station 2 may be installed at an adjacent river monitoring point. As shown in fig. 1, a standard treatment discharge point 91 of a sewage treatment plant and a standard treatment discharge point 92 of a sewage treatment plant are receiving water bodies, and a first water quality and water quantity monitoring station 2 is arranged.
Optionally, the first water quality and quantity monitoring station 2 includes a water quality online monitoring sensing instrument, a water level flow measuring instrument, a control unit and a monitoring system, and has a water quality and quantity monitoring function and a data storage function.
Optionally, a plurality of second water quality and water quantity monitoring stations 3 are further arranged at the sewage treatment plant 1 and each sewage treatment station 6, and are used for monitoring the water quality and water quantity conditions before and after sewage treatment of the sewage treatment plant 1 and each sewage treatment station 6 and feeding back the conditions to the water dynamic feedback regulation management platform 5.
Optionally, the second water quality and water quantity monitoring station 3 includes an automatic control system, a water quality on-line monitoring sensing instrument, a water level and water quantity measuring instrument, a control unit and a monitoring system, and has functions of water quality detection, maintenance early warning, data storage, operation monitoring, safety defense, fault feedback, remote operation and maintenance and the like.
Optionally, the water quality on-line monitoring sensing instrument in the water quality and water quantity monitoring station 3 of the sewage treatment system can be installed at the water inlet and the water outlet of the sewage biochemical treatment device.
Optionally, the automatic control systems in the first water quality and quantity monitoring station 2 and the second water quality and quantity monitoring station 3 comprise an automatic pump adjusting system and an automatic aeration adjusting system; the automatic aeration regulating system comprises a dissolved oxygen sensor, a fan, an electric butterfly valve and a gas flowmeter; through a control unit and a monitoring system in the sewage treatment system, the dissolved oxygen value of a specific area is set to be O according to the requirement by adopting the principle of fuzzy control0Measured value is OtThen the error is Ot-O0According to an input variable Ot-O0The opening degree u of the aeration valve is correspondingly changed (O)t-O0Positive and negative values determine the opening direction, and the magnitude determines the opening amplitude), so that the dissolved oxygen in the sewage biochemical treatment device is automatically controlled at a set value.
Optionally, the water quality on-line monitoring sensor instrument includes, but is not limited to, Chemical Oxygen Demand (COD), ammonia nitrogen, Total Nitrogen (TN), Total Phosphorus (TP), Dissolved Oxygen (DO), suspended solid content (SS), pH and temperature on-line sensing monitors according to project requirements.
Optionally, each control unit is a PLC control unit.
Optionally, each control unit includes a data input module, the data input module sets a manual and automatic two-stage input control mode, and the priority level of manual input control is higher than that of automatic input control.
Optionally, each control unit is connected with a corresponding monitoring system in an ethernet interface manner, and each monitoring system is connected with the water body dynamic feedback regulation management platform 5.
Optionally, each monitoring system employs a remote computer monitoring system.
The satellite type distributed sewage treatment system is adopted, sewage to be treated is collected to the sewage treatment plant 1 and the sewage treatment stations 6 through a sewage pipe network, and the dynamic water body feedback regulation management platform 5 regulates and distributes the sewage amount collected to the sewage treatment plant 1 and each sewage treatment station 6.
Optionally, the water body dynamic feedback regulation management platform 5 comprises a built-in water quality model. The dynamic water feedback regulation management platform 5 collects water body information such as water level, water quantity and water quality of sewage to be treated, water body information such as water quality and water quantity of treated sewage discharged water body and water body information such as water level, water quantity and water quality of received water body, the water body information and operation parameters are calculated through a built-in water quality model, bidirectional feedback regulation is carried out on calculation results in a sewage treatment plant and each sewage treatment station, the sewage quantity is reasonably distributed through an automatic regulation and control system of a midway pump station, and the effluent quality of the treated sewage is ensured to reach the standard and the water quantity of the received water body can be properly regulated.
In the satellite type sewage treatment method disclosed by the invention, the sewage amount is distributed by adopting the following model:
respectively assuming that an existing sewage treatment plant 1 and a plurality of newly-built sewage treatment stations 6 are respectively A, B1, B2, B3 and … … Bn, the actual flow rates of corresponding midway pumping stations are respectively Q1, Q21, Q22, Q23 and … … Q2n, the designed flow rates are Q1, Q21, Q22, Q23 and Q … … Q2n, and the corresponding allowable flow deviations are +/-E1, +/-E21, +/-E22, +/-E23 and … … +/-E2 n.
Under normal conditions, the pump station flow rates Q1, Q21, Q22, Q23 and … … Q2n of each processing point are within Q1+ -E1, Q21 + -E21, Q22 + -E22, Q23 + -E23 and … … Q2n + -E2 n;
under the abnormal condition, namely when the abnormal condition is not in the range, the corresponding automatic control system of the midway pump station feeds the abnormal condition back to the dynamic water body feedback control management platform 5, and the adjustment mode of the dynamic water body feedback control management platform adopts a fuzzy control system. Assuming that the actual flow rate Q1 of A is less than Q1-E1, namely the system operates below the designed water volume range, the + E value is adjusted to be larger at a certain point B (which can be at one or more positions) through the optimization of the system, and the flow rate is automatically adjusted to be within the lower designed range through the automatic control system of the corresponding middle pump station; assuming that the actual flow rate Q1 of A is more than Q1+ E1, namely, the system is operated above the designed water volume range, the optimal value of-E is adjusted to be larger at a certain point B (which can be one or more points), and the automatic adjustment system of the corresponding middle pump station automatically adjusts the flow rate to be in a lower designed range. Preferably, if the absolute value of the deviation between the actual flow Q2n and the design flow Q2n of the sewage treatment station is e2n, the regulated sewage treatment stations are regulated according to the size sequence of e2n, and the station premise for regulation is normal operation and sewage treatment discharge reaching standards without other abnormal conditions.
In addition, when each water plant runs in a reasonable range, if the corresponding receiving water monitoring station feeds back that the water quantity of the receiving water is deficient and a water source needs to be supplemented, the receiving water monitoring station can monitor the water quantity of the receiving water. Preferably, the sewage amount is within a designed reasonable range, the sewage amount of other water plants can be adjusted to enter the water plant, the adjustment mode is the same as the above, and the purified water can be used as a supplementary water source of the receiving water body.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. A satellite distributed wastewater treatment system, comprising:
at least one sewage treatment plant;
at least one sewage treatment station;
at least one main sewer pipe;
a plurality of branch sewage pipes connecting the sewage treatment station and the main sewage pipe;
the first water quality and quantity monitoring station is arranged on the receiving water body;
the second water quality and water quantity monitoring station is arranged on the sewage treatment station;
the midway pump station is arranged on the main sewage pipe and the branch sewage pipe;
and the water body dynamic feedback adjustment management platform is used for adjusting and distributing the sewage amount of the sewage treatment plant and the sewage treatment plant through the midway pump station according to the water quality and water amount data monitored by the first water quality and water amount monitoring station and the second water quality and water amount monitoring station.
2. The satellite distributed sewage treatment system of claim 1, wherein the sewage treatment station comprises a sewage biochemical treatment device, the sewage biochemical treatment device is a multi-stage ring-shaped structure, the multi-stage ring-shaped structure comprises an inner ring and an outer ring; the bottom of the inner ring is paved with a communicated aeration system which is uniformly controlled by the same valve and a flowmeter, the middle part of the inner ring is provided with a three-phase separator, the three-phase separator is provided with a gas collecting chamber and a drainage pipe, a settling area is arranged above the three-phase separator, and inclined pipe packing is adopted in the settling area; and a plurality of groups of independently controlled aeration automatic regulating systems are laid on the outer ring.
3. The satellite distributed sewage treatment system of claim 2 wherein said sewage biochemical treatment unit is modularly assembled by the steps of: 1) according to the treatment scale and the water quality requirement of the project, carrying out parameter standardized calculation and structure integrated design, and establishing a sewage biochemical treatment device model; 2) the main body part of the sewage biochemical treatment device model is divided into modules, and each module comprises a wallboard module, a three-phase separation module, a precipitation module, an aeration system module, a disinfection module and an accessory module; 3) according to the requirements of the structure and the load of the device on the material performance, selecting a proper corrosion-resistant steel material, performing standard prefabrication and paint spraying on each modularized part in a production base, and then transporting to a project site; 4) and (3) field installation, wherein the process of field installation comprises the steps of pouring equipment foundation, adjusting level, priming a bottom plate and performing anti-corrosion and waterproof engineering, the wall plate module, the aeration system module, the three-phase separation module, the precipitation module and the disinfection module are assembled in sequence in a welding mode, and corresponding pipe fittings and electric facilities are synchronously installed when each module is installed.
4. The satellite distributed sewage treatment system according to claim 1, wherein the midway pumping stations comprise an automatic regulation and control system, and the dynamic water body feedback regulation and management platform distributes the sewage amount through the automatic regulation and control system of each midway pumping station; the automatic regulation and control system of the midway pump station comprises an automatic pump regulation system, a water quantity measuring instrument, a control unit and a remote computer monitoring system, and the midway pump station collects water level and water quantity information and feeds the information back to the dynamic water body feedback regulation and management platform; and the control unit of the midway pump station is connected with a remote computer monitoring system through an Ethernet, and the remote computer monitoring system is connected with a water body dynamic feedback regulation management platform.
5. The satellite distributed sewage treatment system according to claim 1 or 4, wherein the first water quality and quantity monitoring station comprises a water quality on-line monitoring sensing instrument, a water level flow measuring instrument, a control unit and a remote computer monitoring system, and is used for monitoring the water quality and quantity of the received water body and feeding the water quality and quantity back to the water body dynamic feedback regulation management platform; the control unit of the first water quality and water quantity monitoring station is connected with a remote computer monitoring system through an Ethernet, and the remote computer monitoring system is connected with a water body dynamic feedback regulation management platform.
6. The satellite distributed sewage treatment system according to claim 1, 4 or 5, wherein the second water quality and quantity monitoring station comprises an automatic control system, a water quality on-line monitoring and sensing instrument, a water level and quantity measuring instrument, a control unit and a remote computer monitoring system, and is used for monitoring the water quality and quantity of the incoming water and the discharged water of the sewage treatment plant and each sewage treatment station and feeding the water quality and quantity back to the water body dynamic feedback regulation and management platform; and the control unit of the second water quality and water quantity monitoring station is connected with a remote computer monitoring system through an Ethernet, and the remote computer monitoring system is connected with a water body dynamic feedback regulation management platform.
7. A sewage treatment method using the satellite distributed sewage treatment system as claimed in any one of claims 1 to 6, comprising the steps of:
s1: adjusting the amount of sewage distributed to the sewage treatment plants and any sewage treatment station through the dynamic water feedback adjustment management platform;
s2: the sewage is discharged after being treated by a sewage treatment plant or a sewage treatment station.
8. The satellite sewage treatment method of claim 7, wherein the step S1 further comprises:
the water body dynamic feedback regulation management platform collects water level, water quantity and water quality information, calculates the sewage distribution amount through a built-in water quality model, feeds the sewage distribution amount back to the sewage treatment plants and each sewage treatment station, and distributes the sewage amount.
9. The satellite type sewage treatment method according to claim 8, wherein the built-in water quality model distributes the amount of sewage in a manner of:
if the sewage treatment plant and the plurality of sewage treatment stations are respectively A, B1, B2, B3 and … … Bn, the actual flow rates of the corresponding midway pump stations are respectively Q1, Q21, Q22, Q23 and … … Q2n, the designed flow rates are Q1, Q21, Q22, Q23 and … … Q2n, the allowable deviation of the corresponding flow rates are +/-E1, +/-E21, +/-E22, +/-E23 and … … +/-E2 n, and the normal flow rate range is Q1 +/-E1, Q21 +/-E21, Q22 +/-E22, Q23 +/-E23 and … … Q2n +/-E2 n;
when the actual flow rate Q1 of the sewage treatment plant is less than Q1-E1, namely the actual flow rate is lower than the designed water quantity range, the actual flow rate of one or more regulated sewage treatment stations is reduced, and the actual flow rate Q2n of the regulated sewage treatment stations is between Q2n and Q2n + E2 n; when the actual flow rate Q1 of the sewage treatment plant is more than Q1+ E1, namely the actual flow rate is higher than the designed water amount range, the actual flow rate of one or more regulated sewage treatment stations is increased, and the actual flow rate Q2n of the regulated sewage treatment stations is between Q2n-E2n and Q2 n.
10. The wastewater treatment method according to claim 9, wherein if the actual flow rate Q2n of the wastewater treatment plant deviates from the design flow rate Q2n by an absolute value of e2n, the regulated wastewater treatment plants are regulated in the order of magnitude of e2 n.
CN202010048447.1A 2020-01-16 2020-01-16 Satellite type distributed sewage treatment system and sewage treatment method Pending CN111233256A (en)

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Application publication date: 20200605