CN112939226A - Algorithm and system for controlling dissolved oxygen value in reasonable interval in leachate treatment - Google Patents
Algorithm and system for controlling dissolved oxygen value in reasonable interval in leachate treatment Download PDFInfo
- Publication number
- CN112939226A CN112939226A CN202110156493.8A CN202110156493A CN112939226A CN 112939226 A CN112939226 A CN 112939226A CN 202110156493 A CN202110156493 A CN 202110156493A CN 112939226 A CN112939226 A CN 112939226A
- Authority
- CN
- China
- Prior art keywords
- dissolved oxygen
- oxygen concentration
- time
- aerobic tank
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
- C02F2209/22—O2
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention belongs to the technical field of landfill leachate treatment, and particularly relates to an algorithm and a system for controlling a dissolved oxygen value in a reasonable interval in leachate treatment, wherein the algorithm for controlling the dissolved oxygen value in the reasonable interval in the leachate treatment comprises the following steps: setting the range of dissolved oxygen concentration in the leachate treatment; detecting the real-time dissolved oxygen concentration in the treatment of the leachate; and the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration are adjusted in the leachate treatment process, so that the real-time dissolved oxygen concentration is in the range of the dissolved oxygen concentration, the most reasonable operation interval for effectively controlling the dissolved oxygen value is realized, the system operation stability is greatly improved, the energy consumption is reduced under the condition of ensuring the effluent water quality, the frequent manual intervention of a control system is reduced, and the labor intensity of operators is reduced.
Description
Technical Field
The invention belongs to the technical field of landfill leachate treatment, and particularly relates to an algorithm and a system for controlling a dissolved oxygen value in a reasonable interval in leachate treatment.
Background
The leachate of the incineration plant in China has the characteristics of complex water quality, high COD (chemical oxygen demand), BOD (biochemical oxygen demand) and ammonia nitrogen content and the like, at present, anaerobic treatment is mostly adopted to reduce the concentration of pollutants, then aerobic treatment and post-treatment processes are adopted, and different anaerobic reactors, A/O (anaerobic/aerobic) treatment processes and advanced treatment modes (membrane systems) are selected according to the characteristics of the water quality of the leachate to achieve the aim of efficiently removing the COD and the ammonia nitrogen.
In the A/O treatment process, a large amount of air is required to be provided in O tanks to provide oxygen required for microbial decomposition of organic matters in the tanks, and each O tank is provided with a dissolved oxygen concentration monitoring instrument. The current mainstream is to provide oxygen by jet aeration. The high-efficiency jet aerator is combined with the air blower and the jet circulating pump to form a jet aeration system. The circulating water pump continuously pumps the mixed liquid in the aeration tank, and the mixed liquid is pressurized by the jet circulating pump and then is sprayed out from a nozzle of the jet aerator.
The concentration of dissolved oxygen is one of the important parameters affecting the effect of the A/O treatment. The dissolved oxygen in the system is enough to meet the requirements of the oxidation and nitration of the organic matters, so that the nitration reaction is sufficient; and secondly, the dissolved oxygen concentration cannot be too high, so that a dissolved oxygen concentration gradient can be generated in the microbial floc to promote the formation of an anoxic microenvironment, and energy waste is caused by too high dissolved oxygen. Therefore, it is necessary to control the dissolved oxygen within a reasonable range (which is set by process engineers and is not within the scope of the present invention). However, the characteristics of the leachate cause the dissolved oxygen value to change greatly and the hysteresis is serious, so that the traditional control algorithm (such as PID control) has poor control effect and often causes unstable effluent quality or high energy consumption. At present, the control of dissolved oxygen in the percolate treatment industry is controlled manually by operators according to own experience. But also has the problems of poor regulation and control effect and high labor intensity of personnel.
Therefore, a new algorithm and system for controlling the dissolved oxygen value in a reasonable interval in the leachate treatment needs to be designed based on the above technical problems.
Disclosure of Invention
The invention aims to provide an algorithm and a system for controlling dissolved oxygen value in a reasonable interval in leachate treatment.
In order to solve the technical problem, the invention provides an algorithm for controlling the dissolved oxygen value in a reasonable interval in the treatment of percolate, which comprises the following steps:
setting the range of dissolved oxygen concentration in the leachate treatment;
detecting the real-time dissolved oxygen concentration in the treatment of the leachate; and
and adjusting according to the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration in the leachate treatment so as to enable the real-time dissolved oxygen concentration to be within the range of the dissolved oxygen concentration.
Further, the method for setting the range of the dissolved oxygen concentration in the leachate treatment comprises the following steps:
the dissolved oxygen concentration range of the first aerobic tank is set as follows: [ a, b ];
the dissolved oxygen concentration range of the second aerobic tank is set as follows: [ c, d ];
wherein a, b, c and d are specific numerical values.
Further, the method for detecting the real-time dissolved oxygen concentration in the leachate treatment comprises the following steps:
detecting the real-time dissolved oxygen concentration DO of the first aerobic tank1；
Detecting the real-time dissolved oxygen concentration DO of the second aerobic tank2。
Further, the method for adjusting the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration in the leachate treatment so that the real-time dissolved oxygen concentration is within the range of the dissolved oxygen concentration comprises the following steps:
according to the real-time dissolved oxygen concentration DO of the first aerobic tank1And adjusting the dissolved oxygen concentration range of the first aerobic tank so that the real-time dissolved oxygen concentration of the first aerobic tank is within the dissolved oxygen concentration range of the first aerobic tank, namely
When DO is present1>When b, reducing the frequency of the first jet pump by a preset reduction frequency, and continuously detecting DO (data DO) after waiting t time1At this time, if DO1>b, continuously reducing the frequency of the first jet pump by a preset reduction frequency, and continuously detecting DO (data DO) after waiting t time1Until the frequency of the first jet pump is reduced by the maximum reduction frequency or a is less than or equal to DO1≤b；
DO after the first jet pump frequency is reduced by the maximum reduction frequency1>b, reducing the opening of the first air volume adjusting valve by a preset reduction opening, and waiting for t time to continuously detect DO1At this time, if DO1>b, continuing to open the first air volume adjusting valveReducing the degree, presetting the degree of opening, waiting for t time and continuously detecting DO1Until the opening degree of the first air volume adjusting valve is reduced by the maximum closing opening degree or a is less than or equal to DO1≤b；
DO after the opening of the first air volume adjusting valve is reduced to the maximum closing opening1>b, reducing the total aeration quantity by a preset reduction percentage, and continuously detecting DO in waiting for t time1At this time, if DO1>b, continuously reducing the total aeration amount by a preset reduction percentage, and continuously detecting DO after waiting for t time1Until the total aeration rate is reduced by the maximum reduction percentage or a is less than or equal to DO1≤b；
DO after the total aeration has decreased by the maximum percent reduction1>And b, alarming.
Further, the real-time dissolved oxygen concentration DO according to the first aerobic tank1And the dissolved oxygen concentration range of the first aerobic tank is adjusted, so that the real-time dissolved oxygen concentration of the first aerobic tank is within the dissolved oxygen concentration range of the first aerobic tank, and the method further comprises the following steps:
when a is less than or equal to DO1When b is less than or equal to b, the current situation is maintained.
Further, the real-time dissolved oxygen concentration DO according to the first aerobic tank1And the dissolved oxygen concentration range of the first aerobic tank is adjusted, so that the real-time dissolved oxygen concentration of the first aerobic tank is within the dissolved oxygen concentration range of the first aerobic tank, and the method further comprises the following steps:
when DO is present1<When a is needed, the frequency of the first jet pump is increased by a preset increasing frequency, and DO continues to be detected after t time1At this time, if DO1<a, continuously increasing the frequency of the first jet pump by a preset increasing frequency, and continuously detecting DO after waiting for t time1Until the frequency of the first jet pump increases the maximum increasing frequency or a is less than or equal to DO1≤b；
DO after the frequency of the first jet pump increases by the maximum increase frequency1<a, opening of the first air volume adjusting valve is increased by a preset opening, and DO is continuously detected after t time1At this time, if DO1<a, continuously opening the opening degree of the first air volume adjusting valve by a preset opening degree until the opening degree of the first air volume adjusting valve is opened to the maximum degreeLarge opening or a is less than or equal to DO1≤b；
DO after the opening of the air volume valve is adjusted to be larger than the maximum opening1<a, increasing the total aeration quantity by a preset increase percentage, and continuously detecting DO in the waiting time t1At this time, if DO1<a, continuously increasing the total aeration amount by a preset increase percentage, and continuously detecting DO in the waiting time t1Until the total aeration rate increases by the maximum increase percentage or a is less than or equal to DO1≤b；
DO after the increase of the total aeration by the maximum percentage increase1<and a, alarming.
Further, the method for adjusting the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration in the leachate treatment so that the real-time dissolved oxygen concentration is within the range of the dissolved oxygen concentration comprises the following steps:
according to the real-time dissolved oxygen concentration DO of the second aerobic tank1And adjusting the dissolved oxygen concentration range of the second aerobic tank so that the real-time dissolved oxygen concentration of the second aerobic tank is within the dissolved oxygen concentration range of the second aerobic tank, namely
When DO is present2>d, reducing the frequency of the second jet pump by a preset reduction frequency, and continuously detecting DO in waiting for t time2At this time, if DO2>d, continuously reducing the frequency of the second jet pump by a preset reduction frequency, and continuously detecting DO in waiting for t time2Until the frequency of the second jet pump is reduced by the maximum reduction frequency or c is less than or equal to DO2≤d；
DO after the second jet pump frequency is reduced by the maximum reduction frequency2>d, closing the opening of the second air volume adjusting valve to a preset closing opening, and waiting for t time to continuously detect DO2At this time, if DO2>d, continuously reducing the opening of the second air volume adjusting valve by a preset reduction opening, and continuously detecting DO (dissolved oxygen) after waiting for t time2Until the opening of the second air volume adjusting valve is reduced by the maximum closing opening or c is less than or equal to DO2≤d；
DO after the opening of the second air volume adjusting valve is reduced to the maximum closing opening2>d, reducing the total aeration quantity by a preset reduction percentage, and continuously detecting DO in waiting for t time2At this time, if DO2>d, continuously reducing the total aeration amount by a preset reduction percentage, and continuously detecting DO after waiting for t time2Until the total aeration rate is reduced by the maximum reduction percentage or c is less than or equal to DO2≤d；
DO after the total aeration has decreased by the maximum percent reduction2>And d, alarming.
Further, the real-time dissolved oxygen concentration DO according to the second aerobic tank1And adjusting the dissolved oxygen concentration range of the second aerobic tank so that the real-time dissolved oxygen concentration of the second aerobic tank is within the dissolved oxygen concentration range of the second aerobic tank, wherein the method further comprises the following steps:
when c is less than or equal to DO2When d is less than or equal to d, the current situation is maintained.
Further, the real-time dissolved oxygen concentration DO according to the second aerobic tank1And the dissolved oxygen concentration range of the second aerobic tank is adjusted, so that the real-time dissolved oxygen concentration of the second aerobic tank is within the dissolved oxygen concentration range of the second aerobic tank, and the method further comprises the following steps:
when DO is present2<When c, increasing the frequency of the second jet pump by a preset increasing frequency, and continuously detecting DO in waiting for t time2At this time, if DO2<c, continuously increasing the frequency of the second jet pump by a preset increasing frequency, and continuously detecting DO after waiting for t time2Until the frequency of the second jet pump increases the maximum increasing frequency or c is less than or equal to DO2≤d；
DO after the frequency of the second jet pump increases by the maximum increase frequency2<c, opening the second air volume adjusting valve by a preset opening degree, and waiting for t time to continuously detect DO2At this time, if DO2<c, continuously increasing the opening degree of the second air volume adjusting valve by a preset opening degree until the opening degree of the second air volume adjusting valve is increased by a maximum opening degree or c is less than or equal to DO2≤d；
DO after the opening of the second air volume adjusting valve is increased by the maximum opening2<c, increasing the total aeration quantity by a preset increase percentage, and continuously detecting DO in the waiting time t2At this time, if DO2<c, continuously increasing the total aeration amount by a preset increase percentage, and continuously detecting DO after waiting for t time2Up toIncrease of the maximum percentage increase of the total aeration rate or c ≦ DO2≤d；
DO after the increase of the total aeration by the maximum percentage increase2<And c, alarming.
On the other hand, the invention also provides a system for controlling the dissolved oxygen value in the reasonable interval in the leachate treatment by adopting the algorithm for controlling the dissolved oxygen value in the reasonable interval in the leachate treatment, which comprises the following steps:
the system comprises an anoxic tank, a first aerobic tank, a second aerobic tank, a control module, and an aeration fan, a first dissolved oxygen concentration monitoring instrument, a second dissolved oxygen concentration monitoring instrument, a first jet pump, a first air volume adjusting valve, a second jet pump and a second air volume adjusting valve which are electrically connected with the control module;
the anoxic tank, the first aerobic tank and the second aerobic tank are sequentially arranged and communicated;
the first dissolved oxygen concentration monitoring instrument is arranged in the first aerobic tank;
the second dissolved oxygen concentration monitoring instrument is arranged in the second aerobic tank;
the control module is suitable for detecting the dissolved oxygen concentration in the first aerobic tank through the first dissolved oxygen concentration monitoring instrument;
the control module is suitable for detecting the dissolved oxygen concentration in the second aerobic tank through the second dissolved oxygen concentration monitoring instrument;
the control module is suitable for controlling the frequency of the first jet pump, the opening of the first adjusting air volume valve and the total aeration volume of the aeration fan so as to enable the real-time dissolved oxygen concentration in the first aerobic tank to be within the range of the dissolved oxygen concentration in the first aerobic tank;
the control module is suitable for controlling the frequency of the second jet pump, the opening of the second adjusting air volume valve and the total aeration volume of the aeration fan, so that the real-time dissolved oxygen concentration in the second aerobic tank is within the range of the dissolved oxygen concentration in the second aerobic tank.
The invention has the advantages that the invention sets the range of the dissolved oxygen concentration in the treatment of the percolate; detecting the real-time dissolved oxygen concentration in the treatment of the leachate; and the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration are adjusted in the leachate treatment process, so that the real-time dissolved oxygen concentration is in the range of the dissolved oxygen concentration, the most reasonable operation interval for effectively controlling the dissolved oxygen value is realized, the system operation stability is greatly improved, the energy consumption is reduced under the condition of ensuring the effluent water quality, the frequent manual intervention of a control system is reduced, and the labor intensity of operators is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of an algorithm for controlling dissolved oxygen values within a reasonable interval in leachate treatment according to the present invention;
FIG. 2 is a trigger condition to which the present invention relates;
FIG. 3 is a logic diagram of the control of the first aerobic tank DO according to the present invention;
FIG. 4 is a logic diagram of the control of a second aerobic tank DO according to the present invention;
FIG. 5 is a schematic block diagram of a system for controlling dissolved oxygen values within reasonable intervals in leachate treatment in accordance with the present invention;
figure 6 is a schematic diagram of a system for controlling dissolved oxygen values within reasonable intervals in leachate treatment in accordance with the present invention.
In the figure:
the system comprises an anoxic tank 1, a first aerobic tank 2, a second aerobic tank 3, an aeration fan 4, a first dissolved oxygen concentration monitoring instrument 5, a second dissolved oxygen concentration monitoring instrument 6, a first jet pump 7, a first air volume adjusting valve 8, a second jet pump 9 and a second air volume adjusting valve 10.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
FIG. 1 is a flow chart of an algorithm for controlling dissolved oxygen values within a reasonable interval in leachate treatment according to the present invention.
As shown in fig. 1, this embodiment 1 provides an algorithm for controlling dissolved oxygen value in a reasonable interval in a leachate treatment, which includes: setting the range of dissolved oxygen concentration in the leachate treatment; detecting the real-time dissolved oxygen concentration in the treatment of the leachate; the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration in the leachate treatment are adjusted to enable the real-time dissolved oxygen concentration to be within the range of the dissolved oxygen concentration, so that the most reasonable operation interval for effectively controlling the dissolved oxygen value is realized, the system operation stability is greatly improved, the energy consumption is reduced under the condition of ensuring the effluent water quality, meanwhile, manual intervention is not needed, the frequent manual intervention of a control system is reduced, the labor intensity of operators is reduced, and the system reliability is improved; the production operation is ensured to be stable, and the automation rate of the equipment is improved.
The COD is removed by adopting an anaerobic reactor in a percolate treatment plant, and the total nitrogen and ammonia nitrogen are efficiently removed by adopting an A/O treatment process (namely an anoxic/aerobic treatment process). In the A/O treatment process, 1A pool (an anoxic pool 1) and 2O pools (a first aerobic pool 2 and a second aerobic pool 3, wherein the first aerobic pool 2 is a primary aerobic pool, and the first aerobic pool 2 is a primary aerobic pool) are arranged, and each O pool is provided with a dissolved oxygen concentration monitoring instrument (DO is used for replacing the dissolved oxygen concentration in the following). An aeration fan 4 is used as an air source of the aeration system, the air quantity of each O pool is controlled by adjusting the opening degree of an air quantity valve (generally, the opening degree is represented by%) to provide oxygen by adopting a jet aeration mode, the variable-frequency speed regulation of a jet pump motor (generally, the motor frequency is represented by HZ, the frequency is higher, the flow is higher) is used for adjusting the flow of jet flow in real time, and equipment is connected to an automatic control system (a control module and a PLC) to carry out remote operation and monitoring.
In this embodiment, the method for setting the range of dissolved oxygen concentration in leachate treatment comprises: the dissolved oxygen concentration range of the first aerobic tank 2 (No. 1O tank) is set as follows: [ a, b ]; the dissolved oxygen concentration range of the second aerobic tank 3(2# O tank) is set as follows: [ c, d ]; wherein a, b, c and d are specific numerical values.
In this embodiment, the method for detecting the real-time dissolved oxygen concentration in the leachate treatment comprises the following steps: detecting the real-time dissolved oxygen concentration DO of the first aerobic tank 21(ii) a Detecting the real-time dissolved oxygen concentration DO of the second aerobic tank 32。
FIG. 2 is a trigger condition to which the present invention relates;
FIG. 3 is a logic diagram of the control of the first aerobic tank DO according to the present invention;
FIG. 4 is a logic diagram of the control of a second aerobic tank DO according to the present invention;
as shown in fig. 2, fig. 3 and fig. 4, in the present embodiment, the method for adjusting the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration in the leachate treatment so that the real-time dissolved oxygen concentration is within the range of the dissolved oxygen concentration includes: according to the real-time dissolved oxygen concentration DO of the first aerobic tank 21And the dissolved oxygen concentration range of the first aerobic tank 2 is adjusted so that the real-time dissolved oxygen concentration of the first aerobic tank 2 is within the dissolved oxygen concentration range of the first aerobic tank 2, namely
When DO is present1>When b is performed, the frequency of the first jet pump 7 is reduced by a preset reduction frequency (5Hz), and t time is waited (because the influence on DO after the action of relevant equipment has great hysteresis, the change of the DO value needs to be judged after waiting for a period of time, generally 15-30 minutes, and the change is performedTime is indicated by the letter t) continues to detect DO1At this time, if DO1>b, continuously reducing the frequency of the first jet pump 7 by a preset reduction frequency, and continuously detecting DO after waiting for t time1Until the frequency of the first jet pump 7 is reduced by the maximum reduction frequency (30Hz) or a is less than or equal to DO1≤b；
DO after the frequency of the first jet pump 7 has decreased by the maximum reduction frequency1>b (entering a valve adjusting mode), reducing the opening of the first air volume adjusting valve 8 by a preset reducing opening (10%), and continuously detecting DO (dissolved oxygen) after waiting for t time1At this time, if DO1>b, continuously reducing the opening of the first air volume adjusting valve 8 by a preset reduction opening, and continuously detecting DO (dissolved oxygen) after waiting for t time1Until the opening degree of the first air volume adjusting valve 8 is reduced by the maximum closing opening degree (50 percent) or a is less than or equal to DO1≤b；
DO after the opening of the first air volume adjusting valve 8 is reduced to the maximum closing opening1>b (entering a gas regulation mode), reducing the total aeration amount by a preset reduction percentage (5%), and continuously detecting DO in waiting for t time1At this time, if DO1>b, continuously reducing the total aeration amount by a preset reduction percentage, and continuously detecting DO after waiting for t time1Until the total aeration quantity is reduced by the maximum reduction percentage (reduced to 0.7 times of the original initial aeration quantity, namely 70 percent of the original initial aeration quantity) or a is less than or equal to DO1≤b；
DO after the total aeration has decreased by the maximum percent reduction1>And b, alarming to show that the DO value cannot be automatically adjusted due to the fact that the whole A/O system is abnormal.
In this embodiment, the real-time dissolved oxygen concentration DO according to the first aerobic tank 21And the dissolved oxygen concentration range of the first aerobic tank 2 is adjusted, so that the real-time dissolved oxygen concentration of the first aerobic tank 2 is within the dissolved oxygen concentration range of the first aerobic tank 2, and the method further comprises the following steps: when a is less than or equal to DO1And when the b is less than or equal to b, maintaining the current situation and not operating each device.
In this embodiment, the real-time dissolved oxygen concentration DO according to the first aerobic tank 21And the dissolved oxygen concentration range of the first aerobic tank 2 is adjusted, so that the real-time dissolved oxygen concentration of the first aerobic tank 2 is positioned in the dissolved oxygen concentration of the first aerobic tank 2The method within the oxygen concentration range further comprises:
when DO is present1<When a is needed, the frequency of the first jet pump 7 is increased by a preset increasing frequency (5Hz), and DO is continuously detected after t time1At this time, if DO1<a, continuously increasing the frequency of the first jet pump 7 by a preset increasing frequency, and continuously detecting DO after waiting for t time1Until the frequency of the first jet pump 7 is increased by the maximum increasing frequency (50Hz) or a is less than or equal to DO1≤b；
DO after the frequency of the first jet pump 7 has increased by the maximum increase frequency1<a, opening of the first air volume adjusting valve 8 is increased by a preset opening (10%), and DO is continuously detected after t time1At this time, if DO1<a, continuously increasing the opening degree of the first air volume adjusting valve 8 by a preset opening degree until the opening degree of the first air volume adjusting valve 8 is increased by a maximum opening degree (100%) or a is not more than DO1≤b；
DO after the opening of the air volume valve is adjusted to be larger than the maximum opening1<a, increasing the total aeration amount by a preset increase percentage (5%), and continuously detecting DO in the waiting time t1At this time, if DO1<a, continuously increasing the total aeration amount by a preset increase percentage, and continuously detecting DO in the waiting time t1Until the total aeration rate is increased by the maximum increase percentage (increased to 1.3 times of the original initial aeration rate, namely 130 percent of the original initial aeration rate) or a is less than or equal to DO1≤b；
DO after the increase of the total aeration by the maximum percentage increase1<and a, alarming.
In this embodiment, the method for adjusting the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration in the leachate treatment so that the real-time dissolved oxygen concentration is within the range of the dissolved oxygen concentration includes:
according to the real-time dissolved oxygen concentration DO of the second aerobic tank 31And the dissolved oxygen concentration range of the second aerobic tank 3 is adjusted so that the real-time dissolved oxygen concentration of the second aerobic tank 3 is within the dissolved oxygen concentration range of the second aerobic tank 3, namely
When DO is present2>d, reducing the frequency of the second jet pump 9 by a preset reduction frequency, and continuously detecting DO in waiting for t time2At this time, if DO2>d, continuously reducing the frequency of the second jet pump 9 by a preset reduction frequency, and continuously detecting DO after waiting for t time2Until the frequency of the second jet pump 9 is reduced by the maximum reduction frequency or c is less than or equal to DO2≤d；
DO after the frequency of the second jet pump 9 has decreased by the maximum reduction frequency2>d, closing the opening of the second air volume adjusting valve 10 to a preset closing opening, and waiting for t time to continuously detect DO2At this time, if DO2>d, continuously reducing the opening of the second air volume adjusting valve 10 by a preset reduction opening, and continuously detecting DO after waiting for t time2Until the opening of the second air volume adjusting valve 10 is reduced by the maximum closing opening or c is less than or equal to DO2≤d；
DO after the opening of the second air volume adjusting valve 10 is reduced to the maximum closing opening2>d, reducing the total aeration quantity by a preset reduction percentage, and continuously detecting DO in waiting for t time2At this time, if DO2>d, continuously reducing the total aeration amount by a preset reduction percentage, and continuously detecting DO after waiting for t time2Until the total aeration rate is reduced by the maximum reduction percentage or c is less than or equal to DO2≤d；
DO after the total aeration has decreased by the maximum percent reduction2>And d, alarming.
DO independent operation algorithms of the first aerobic tank 2 and the second aerobic tank 3 DO not interfere with each other in most of time. The waiting time in the algorithm of another aerobic tank needs to be reset (i.e. t is re-timed) only when the total aeration quantity is increased/decreased; for example, the aeration amount is increased by 5% in the 2# O tank algorithm, and the DO determination time in the 1# O tank algorithm is reset when the DO determination time is monitored and run for 13 minutes, and the DO determination time in the 1# O tank algorithm is counted from 0 minute. If the 1# O pool algorithm is not performing the decision latency step, then no action is taken. If abnormal conditions such as equipment failure and the like occur in the algorithm execution process, the algorithm stops running.
In this embodiment, the real-time dissolved oxygen concentration DO according to the second aerobic tank 31And the dissolved oxygen concentration range of the second aerobic tank 3 is adjusted so that the real-time dissolved oxygen concentration of the second aerobic tank 3 is positioned at the second aerobicThe method for the oxygen pond 3 in the dissolved oxygen concentration range further comprises the following steps: when c is less than or equal to DO2When d is less than or equal to d, the current situation is maintained.
In this embodiment, the real-time dissolved oxygen concentration DO according to the second aerobic tank 31And the dissolved oxygen concentration range of the second aerobic tank 3 is adjusted, so that the real-time dissolved oxygen concentration of the second aerobic tank 3 is within the dissolved oxygen concentration range of the second aerobic tank 3, and the method further comprises the following steps:
when DO is present2<When c, increasing the frequency of the second jet pump 9 by a preset increasing frequency, and continuously detecting DO after waiting t time2At this time, if DO2<c, continuously increasing the frequency of the second jet pump 9 by a preset increasing frequency, and continuously detecting DO after waiting for t time2Until the frequency of the second jet pump 9 increases the maximum increasing frequency or c is less than or equal to DO2≤d；
DO after the frequency of the second jet pump 9 has increased by the maximum increase frequency2<c, opening the second air volume adjusting valve 10 by a preset opening, and waiting for t time to continuously detect DO2At this time, if DO2<c, continuously increasing the opening degree of the second air volume adjusting valve 10 by a preset opening degree until the opening degree of the second air volume adjusting valve 10 is increased by a maximum opening degree or c is less than or equal to DO2≤d；
DO after the opening of the second adjusting air volume valve 10 is increased by the maximum opening2<c, increasing the total aeration quantity by a preset increase percentage, and continuously detecting DO in the waiting time t2At this time, if DO2<c, continuously increasing the total aeration amount by a preset increase percentage, and continuously detecting DO after waiting for t time2Until the total aeration rate increases by the maximum increase percentage or c is less than or equal to DO2≤d；
DO after the increase of the total aeration by the maximum percentage increase2<And c, alarming.
Example 2
FIG. 5 is a schematic block diagram of a system for controlling dissolved oxygen values within reasonable intervals in leachate treatment in accordance with the present invention;
figure 6 is a schematic diagram of a system for controlling dissolved oxygen values within reasonable intervals in leachate treatment in accordance with the present invention.
As shown in fig. 5 and fig. 6, based on the embodiment 1, the present embodiment 2 further provides a system for controlling dissolved oxygen value in a reasonable interval in the leachate treatment by using the algorithm for controlling dissolved oxygen value in a reasonable interval in the leachate treatment in the embodiment 1, comprising: the system comprises an anoxic tank 1, a first aerobic tank 2, a second aerobic tank 3, a control module, and an aeration fan 4, a first dissolved oxygen concentration monitoring instrument 5, a second dissolved oxygen concentration monitoring instrument 6, a first jet pump 7, a first air volume adjusting valve 8, a second jet pump 9 and a second air volume adjusting valve 10 which are electrically connected with the control module; the anoxic tank 1, the first aerobic tank 2 and the second aerobic tank 3 are arranged in sequence and communicated with each other; the first dissolved oxygen concentration monitoring instrument 5 is arranged in the first aerobic tank 2; the second dissolved oxygen concentration monitoring instrument 6 is arranged in the second aerobic tank 3; the control module is suitable for detecting the dissolved oxygen concentration in the first aerobic tank 2 through the first dissolved oxygen concentration monitoring instrument 5; the control module is suitable for detecting the dissolved oxygen concentration in the second aerobic tank 3 through the second dissolved oxygen concentration monitoring instrument 6; the control module is suitable for controlling the frequency of the first jet pump 7, the opening of the first adjusting air quantity valve 8 and the total aeration quantity of the aeration fan 4 so as to enable the real-time dissolved oxygen concentration in the first aerobic tank 2 to be within the range of the dissolved oxygen concentration in the first aerobic tank 2; the control module is suitable for controlling the frequency of the second jet pump 9, the opening degree of the second adjusting air quantity valve 10 and the total aeration quantity of the aeration fan 4, so that the real-time dissolved oxygen concentration in the second aerobic tank 3 is within the range of the dissolved oxygen concentration in the second aerobic tank 3.
In this embodiment, the control module may precisely control the dissolved oxygen values in the first aerobic tank 2 and the second aerobic tank 3 in the reasonable interval by using the algorithm for controlling the dissolved oxygen value in the reasonable interval in the leachate treatment described in embodiment 1.
In conclusion, the invention sets the range of the dissolved oxygen concentration in the leachate treatment; detecting the real-time dissolved oxygen concentration in the treatment of the leachate; and the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration are adjusted in the leachate treatment process, so that the real-time dissolved oxygen concentration is in the range of the dissolved oxygen concentration, the most reasonable operation interval for effectively controlling the dissolved oxygen value is realized, the system operation stability is greatly improved, the energy consumption is reduced under the condition of ensuring the effluent water quality, the frequent manual intervention of a control system is reduced, and the labor intensity of operators is reduced.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. An algorithm for controlling dissolved oxygen value in reasonable interval in leachate treatment is characterized by comprising the following steps:
setting the range of dissolved oxygen concentration in the leachate treatment;
detecting the real-time dissolved oxygen concentration in the treatment of the leachate; and
and adjusting according to the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration in the leachate treatment so as to enable the real-time dissolved oxygen concentration to be within the range of the dissolved oxygen concentration.
2. The algorithm for controlling dissolved oxygen value in reasonable intervals in leachate treatment as claimed in claim 1, wherein,
the method for setting the range of the dissolved oxygen concentration in the leachate treatment comprises the following steps:
the dissolved oxygen concentration range of the first aerobic tank is set as follows: [ a, b ];
the dissolved oxygen concentration range of the second aerobic tank is set as follows: [ c, d ];
wherein a, b, c and d are specific numerical values.
3. The algorithm for controlling dissolved oxygen value in leachate treatment as claimed in claim 2, wherein,
the method for detecting the real-time dissolved oxygen concentration in the leachate treatment comprises the following steps:
detecting the real-time dissolved oxygen concentration DO of the first aerobic tank1；
Detecting the real-time dissolved oxygen concentration DO of the second aerobic tank2。
4. The algorithm for controlling dissolved oxygen value in leachate treatment as claimed in claim 3, wherein,
the method for adjusting the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration in the leachate treatment so as to enable the real-time dissolved oxygen concentration to be within the range of the dissolved oxygen concentration comprises the following steps:
according to the real-time dissolved oxygen concentration DO of the first aerobic tank1And adjusting the dissolved oxygen concentration range of the first aerobic tank so that the real-time dissolved oxygen concentration of the first aerobic tank is within the dissolved oxygen concentration range of the first aerobic tank, namely
When DO is present1>When b, reducing the frequency of the first jet pump by a preset reduction frequency, and continuously detecting DO (data DO) after waiting t time1At this time, if DO1>b, continuously reducing the frequency of the first jet pump by a preset reduction frequency, and continuously detecting DO (data DO) after waiting t time1Until the frequency of the first jet pump is reduced by the maximum reduction frequency or a is less than or equal to DO1≤b；
DO after the first jet pump frequency is reduced by the maximum reduction frequency1>b, reducing the opening of the first air volume adjusting valve by a preset reduction opening, and waiting for t time to continuously detect DO1At this time, if DO1>b, continuously reducing the opening of the first air volume adjusting valve by a preset reduction opening, and continuously detecting DO (dissolved oxygen) after waiting for t time1Until the opening degree of the first air volume adjusting valve is reduced by the maximum closing opening degree or a is less than or equal to DO1≤b；
DO after the opening of the first air volume adjusting valve is reduced to the maximum closing opening1>b, reducing the total aeration quantity by a preset reduction percentage, and continuously detecting DO in waiting for t time1At this time, if DO1>b, continuously reducing the total aeration amount by a preset reduction percentage, and continuously detecting DO after waiting for t time1Until total aerationReduction in maximum percent reduction or a ≦ DO1≤b；
DO after the total aeration has decreased by the maximum percent reduction1>And b, alarming.
5. The algorithm for controlling dissolved oxygen value in reasonable intervals in leachate treatment as claimed in claim 4, wherein,
the real-time dissolved oxygen concentration DO according to the first aerobic tank1And the dissolved oxygen concentration range of the first aerobic tank is adjusted, so that the real-time dissolved oxygen concentration of the first aerobic tank is within the dissolved oxygen concentration range of the first aerobic tank, and the method further comprises the following steps:
when a is less than or equal to DO1When b is less than or equal to b, the current situation is maintained.
6. The algorithm for controlling dissolved oxygen value in a reasonable interval in leachate treatment as claimed in claim 5, wherein,
the real-time dissolved oxygen concentration DO according to the first aerobic tank1And the dissolved oxygen concentration range of the first aerobic tank is adjusted, so that the real-time dissolved oxygen concentration of the first aerobic tank is within the dissolved oxygen concentration range of the first aerobic tank, and the method further comprises the following steps:
when DO is present1<When a is needed, the frequency of the first jet pump is increased by a preset increasing frequency, and DO continues to be detected after t time1At this time, if DO1<a, continuously increasing the frequency of the first jet pump by a preset increasing frequency, and continuously detecting DO after waiting for t time1Until the frequency of the first jet pump increases the maximum increasing frequency or a is less than or equal to DO1≤b；
DO after the frequency of the first jet pump increases by the maximum increase frequency1<a, opening of the first air volume adjusting valve is increased by a preset opening, and DO is continuously detected after t time1At this time, if DO1<a, continuously increasing the opening degree of the first air volume adjusting valve by a preset opening degree until the opening degree of the first air volume adjusting valve is increased by a maximum opening degree or a is not more than DO1≤b；
DO after the opening of the air volume valve is adjusted to be larger than the maximum opening1<a, increasing the total aeration rateIncreasing the preset increase percentage, waiting for t time to continue detecting DO1At this time, if DO1<a, continuously increasing the total aeration amount by a preset increase percentage, and continuously detecting DO in the waiting time t1Until the total aeration rate increases by the maximum increase percentage or a is less than or equal to DO1≤b；
DO after the increase of the total aeration by the maximum percentage increase1<and a, alarming.
7. The algorithm for controlling dissolved oxygen value in reasonable intervals in leachate treatment as claimed in claim 6, wherein,
the method for adjusting the real-time dissolved oxygen concentration and the range of the dissolved oxygen concentration in the leachate treatment so as to enable the real-time dissolved oxygen concentration to be within the range of the dissolved oxygen concentration comprises the following steps:
according to the real-time dissolved oxygen concentration DO of the second aerobic tank1And adjusting the dissolved oxygen concentration range of the second aerobic tank so that the real-time dissolved oxygen concentration of the second aerobic tank is within the dissolved oxygen concentration range of the second aerobic tank, namely
When DO is present2>d, reducing the frequency of the second jet pump by a preset reduction frequency, and continuously detecting DO in waiting for t time2At this time, if DO2>d, continuously reducing the frequency of the second jet pump by a preset reduction frequency, and continuously detecting DO in waiting for t time2Until the frequency of the second jet pump is reduced by the maximum reduction frequency or c is less than or equal to DO2≤d；
DO after the second jet pump frequency is reduced by the maximum reduction frequency2>d, closing the opening of the second air volume adjusting valve to a preset closing opening, and waiting for t time to continuously detect DO2At this time, if DO2>d, continuously reducing the opening of the second air volume adjusting valve by a preset reduction opening, and continuously detecting DO (dissolved oxygen) after waiting for t time2Until the opening of the second air volume adjusting valve is reduced by the maximum closing opening or c is less than or equal to DO2≤d；
DO after the opening of the second air volume adjusting valve is reduced to the maximum closing opening2>d, reducing the total aeration quantity by a preset reduction percentage, and continuously detecting DO in waiting for t time2At this time, if DO2>d, continuously reducing the total aeration amount by a preset reduction percentage, and continuously detecting DO after waiting for t time2Until the total aeration rate is reduced by the maximum reduction percentage or c is less than or equal to DO2≤d；
DO after the total aeration has decreased by the maximum percent reduction2>And d, alarming.
8. The algorithm for controlling dissolved oxygen value in leachate treatment as claimed in claim 7, wherein,
the real-time dissolved oxygen concentration DO according to the second aerobic tank1And adjusting the dissolved oxygen concentration range of the second aerobic tank so that the real-time dissolved oxygen concentration of the second aerobic tank is within the dissolved oxygen concentration range of the second aerobic tank, wherein the method further comprises the following steps:
when c is less than or equal to DO2When d is less than or equal to d, the current situation is maintained.
9. The algorithm for controlling dissolved oxygen value in a reasonable interval in leachate treatment as claimed in claim 8,
the real-time dissolved oxygen concentration DO according to the second aerobic tank1And the dissolved oxygen concentration range of the second aerobic tank is adjusted, so that the real-time dissolved oxygen concentration of the second aerobic tank is within the dissolved oxygen concentration range of the second aerobic tank, and the method further comprises the following steps:
when DO is present2<When c, increasing the frequency of the second jet pump by a preset increasing frequency, and continuously detecting DO in waiting for t time2At this time, if DO2<c, continuously increasing the frequency of the second jet pump by a preset increasing frequency, and continuously detecting DO after waiting for t time2Until the frequency of the second jet pump increases the maximum increasing frequency or c is less than or equal to DO2≤d；
DO after the frequency of the second jet pump increases by the maximum increase frequency2<c, opening the second air volume adjusting valve by a preset opening degree, and waiting for t time to continuously detect DO2At this time, if DO2<c, continuously increasing the opening degree of the second air volume adjusting valve by a preset opening degree until the opening degree of the second air volume adjusting valve is increased by a maximum opening degree or c is less than or equal to DO2≤d；
DO after the opening of the second air volume adjusting valve is increased by the maximum opening2<c, increasing the total aeration quantity by a preset increase percentage, and continuously detecting DO in the waiting time t2At this time, if DO2<c, continuously increasing the total aeration amount by a preset increase percentage, and continuously detecting DO after waiting for t time2Until the total aeration rate increases by the maximum increase percentage or c is less than or equal to DO2≤d；
DO after the increase of the total aeration by the maximum percentage increase2<And c, alarming.
10. A system for controlling dissolved oxygen values within reasonable intervals in a leachate treatment using the algorithm for controlling dissolved oxygen values within reasonable intervals in a leachate treatment according to any of claims 1 to 9, comprising:
the system comprises an anoxic tank, a first aerobic tank, a second aerobic tank, a control module, and an aeration fan, a first dissolved oxygen concentration monitoring instrument, a second dissolved oxygen concentration monitoring instrument, a first jet pump, a first air volume adjusting valve, a second jet pump and a second air volume adjusting valve which are electrically connected with the control module;
the anoxic tank, the first aerobic tank and the second aerobic tank are sequentially arranged and communicated;
the first dissolved oxygen concentration monitoring instrument is arranged in the first aerobic tank;
the second dissolved oxygen concentration monitoring instrument is arranged in the second aerobic tank;
the control module is suitable for detecting the dissolved oxygen concentration in the first aerobic tank through the first dissolved oxygen concentration monitoring instrument;
the control module is suitable for detecting the dissolved oxygen concentration in the second aerobic tank through the second dissolved oxygen concentration monitoring instrument;
the control module is suitable for controlling the frequency of the first jet pump, the opening of the first adjusting air volume valve and the total aeration volume of the aeration fan so as to enable the real-time dissolved oxygen concentration in the first aerobic tank to be within the range of the dissolved oxygen concentration in the first aerobic tank;
the control module is suitable for controlling the frequency of the second jet pump, the opening of the second adjusting air volume valve and the total aeration volume of the aeration fan, so that the real-time dissolved oxygen concentration in the second aerobic tank is within the range of the dissolved oxygen concentration in the second aerobic tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156493.8A CN112939226B (en) | 2021-02-04 | 2021-02-04 | Algorithm and system for controlling dissolved oxygen value in reasonable interval in leachate treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156493.8A CN112939226B (en) | 2021-02-04 | 2021-02-04 | Algorithm and system for controlling dissolved oxygen value in reasonable interval in leachate treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112939226A true CN112939226A (en) | 2021-06-11 |
| CN112939226B CN112939226B (en) | 2022-11-11 |
Family
ID=76244057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110156493.8A Active CN112939226B (en) | 2021-02-04 | 2021-02-04 | Algorithm and system for controlling dissolved oxygen value in reasonable interval in leachate treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112939226B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000001416A (en) * | 1998-06-11 | 2000-01-15 | 김형벽 | Treatment method of made land leachate by using ultraviolet irradiation and dissolved oxygen control |
| CN201330216Y (en) * | 2009-01-15 | 2009-10-21 | 彭永臻 | Apparatus for implementing sludge micro-swelling energy-saving method in biological denitrification technique |
| CN102042092A (en) * | 2010-12-06 | 2011-05-04 | 哈尔滨工业大学 | Surge protection method for switching control of air quantity of air compressor of turbocharging system |
| CN102276057A (en) * | 2011-07-07 | 2011-12-14 | 江苏高朗环境技术有限公司 | Accurate aeration and combined defoaming technological scheme for waste leachate treatment |
| US20140263041A1 (en) * | 2013-03-14 | 2014-09-18 | Hampton Roads Sanitation District | Method and apparatus for maximizing nitrogen removal from wastewater |
| CN106219739A (en) * | 2016-04-08 | 2016-12-14 | 江苏天雨环保集团有限公司 | Multiple spot variable aeration amount intelligent integral complete set of equipments and control method thereof |
| CN106517548A (en) * | 2016-11-21 | 2017-03-22 | 徐州核瑞环保投资有限公司 | Dissolved oxygen control device and system thereof |
| CN108996665A (en) * | 2018-07-04 | 2018-12-14 | 光大环境科技（中国）有限公司 | A kind of landfill leachate aeration control system and landfill leachate aeration control method |
-
2021
- 2021-02-04 CN CN202110156493.8A patent/CN112939226B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000001416A (en) * | 1998-06-11 | 2000-01-15 | 김형벽 | Treatment method of made land leachate by using ultraviolet irradiation and dissolved oxygen control |
| CN201330216Y (en) * | 2009-01-15 | 2009-10-21 | 彭永臻 | Apparatus for implementing sludge micro-swelling energy-saving method in biological denitrification technique |
| CN102042092A (en) * | 2010-12-06 | 2011-05-04 | 哈尔滨工业大学 | Surge protection method for switching control of air quantity of air compressor of turbocharging system |
| CN102276057A (en) * | 2011-07-07 | 2011-12-14 | 江苏高朗环境技术有限公司 | Accurate aeration and combined defoaming technological scheme for waste leachate treatment |
| US20140263041A1 (en) * | 2013-03-14 | 2014-09-18 | Hampton Roads Sanitation District | Method and apparatus for maximizing nitrogen removal from wastewater |
| CN106219739A (en) * | 2016-04-08 | 2016-12-14 | 江苏天雨环保集团有限公司 | Multiple spot variable aeration amount intelligent integral complete set of equipments and control method thereof |
| CN106517548A (en) * | 2016-11-21 | 2017-03-22 | 徐州核瑞环保投资有限公司 | Dissolved oxygen control device and system thereof |
| CN108996665A (en) * | 2018-07-04 | 2018-12-14 | 光大环境科技（中国）有限公司 | A kind of landfill leachate aeration control system and landfill leachate aeration control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112939226B (en) | 2022-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3353613A1 (en) | System and method for wastewater treatment process control | |
| CN101759290A (en) | Device and method for rapidly realizing and stably maintaining shortcut nitrification in continuous flow process | |
| CN202968311U (en) | Water treatment system | |
| CN101609309B (en) | Membrane pollution optimized control specialist system of membrane reactor | |
| CN112939226B (en) | Algorithm and system for controlling dissolved oxygen value in reasonable interval in leachate treatment | |
| CN110563223A (en) | process method for treating difficultly degraded COD (chemical oxygen demand) in produced water of high-sulfur-content gas field | |
| CN115494207A (en) | Intelligent early warning regulation and control system and regulation and control method for toxicity of inlet water of sewage plant | |
| CN114538538A (en) | Total nitrogen control system and method for sewage plant | |
| JP2002219481A (en) | Equipment for controlling concentration of dissolved oxygen in aerating tank | |
| CN108996665B (en) | Landfill leachate aeration control system and landfill leachate aeration control method | |
| JP2013039577A (en) | Sewage treatment method | |
| Moldovan et al. | Anaerobic-aerobic WWTP for a non-alcoholic liquid products factory | |
| KR100338510B1 (en) | Real-time control technology for wastewater treatment system | |
| CN218824242U (en) | Sewage plant influent water toxicity intelligent early warning regulation and control system | |
| CN112794398A (en) | Control system of intermittent microwave induced oxidation organic wastewater treatment device | |
| CN221588296U (en) | Difficult degradation chemical industry sewage treatment plant | |
| CN110803814A (en) | Intelligent water purification system | |
| CN115677020B (en) | Method for treating organic wastewater by combining ozone oxidation and biological activated carbon | |
| KR20190119253A (en) | Apparatus and Method for Inhibiting Activity of Nitrite Oxidation Bacteria | |
| CN117720236B (en) | Electroplating wastewater treatment method | |
| CN218675788U (en) | Intelligent monitoring device for realizing greenhouse gas emission reduction in papermaking wastewater treatment process | |
| CN115259360B (en) | Multi-mode control method of rural household SBR sewage treatment equipment | |
| CN210855696U (en) | Liquid crystal display material production wastewater treatment equipment | |
| Gao et al. | Experimental Study on Membrane Fouling and Cleaning in Hydrolytic Acidification-Membrane-Sequencing Batch Reactors Process | |
| Ding et al. | Overview of Energy-Saving and Consumption-Reducing Techniques for Petrochemical Wastewater Treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |