CN112707506A - Sewage treatment method and device and electronic equipment - Google Patents
Sewage treatment method and device and electronic equipment Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 79
- 238000006243 chemical reaction Methods 0.000 claims abstract description 379
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- 238000007254 oxidation reaction Methods 0.000 claims abstract description 41
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000001301 oxygen Substances 0.000 claims abstract description 40
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 40
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- 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
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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
- 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
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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- 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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a sewage treatment method, a sewage treatment device and electronic equipment. The method is applied to a sewage treatment system, the sewage treatment system comprises a first reaction tank, a second reaction tank and an automatic controller, and the method comprises the following steps: the first reaction tank obtains input sewage, carries out short-cut nitrification reaction on the sewage, and simultaneously removes chemical oxygen demand in the sewage; inputting the sewage treated by the first reaction tank into a second reaction tank, and carrying out anaerobic ammonia oxidation reaction on the sewage to remove nitrogen in the sewage; and the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank are controlled by an automatic controller. The mode can be automatically controlled by an automatic controller, manual operation is not needed, and labor cost can be saved; the first reaction tank and the second reaction tank are respectively used for carrying out short-cut nitrification reaction and anaerobic ammonia oxidation reaction, so that the activity of anaerobic ammonia oxidation bacteria can be increased, and the sewage treatment efficiency can be improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment method, a sewage treatment device and electronic equipment.
Background
With the development of social industry, the industry is developed more and more, the pollution of water resources is serious at present, and the normal life of people is influenced. Sewage is divided into domestic sewage and industrial sewage, and various industrial sewage and domestic sewage are continuously discharged and discharged, so that a lot of water resources are polluted, and available water in our lives is increasingly lacked. In order to protect the environment in which people depend on living, domestic sewage and industrial wastewater need to be treated.
In the traditional sewage treatment, nitrogen-containing pollutants are mainly removed by a nitrification and denitrification technology, but the defects of additional carbon source requirement, high energy consumption and the like exist, and the short-cut nitrification and denitrification have the advantages of saving 30% of energy consumption, reducing 45% of organic carbon source, reducing residual sludge and the like, and more importantly, if the short-cut nitrification and Anaerobic ammonia Oxidation (ANAMMOX) process are combined, the short-cut nitrification is more advantageous, a reaction substrate NO 2-N is provided for ANAMMOX reaction, and subsequent ANAMMOX bacteria take NO 2-N as an electron acceptor and are converted into nitrogen together with NH4+ -N to realize autotrophic nitrogen removal. The sewage anaerobic ammonia oxidation sewage treatment is generally divided into two parts, one part is a partial nitrification reaction, and the other part is an anaerobic ammonia oxidation reaction. In the existing scheme, both the short-cut nitrification reaction and the anaerobic ammonium oxidation reaction are generally performed through one reaction tank, and operations corresponding to different reactions are performed manually, for example: adding raw materials, and regulating and controlling temperature, pH (potential of hydrogen), and the like. However, it is difficult to control the reaction conditions of anammox bacteria, and the reaction conditions are influenced by each other, so that the activity of anammox bacteria is suppressed, and the efficiency of sewage treatment is low. Moreover, the above scheme requires certain labor cost to operate, and wastes time and labor.
Disclosure of Invention
In view of the above, the present invention provides a sewage treatment method, an apparatus and an electronic device, which can increase the activity of anammox bacteria, improve the sewage treatment efficiency, and save labor cost and chemical cost without manual operation.
In a first aspect, an embodiment of the present invention provides a sewage treatment method, which is applied to a sewage treatment system, where the sewage treatment system includes a first reaction tank, a second reaction tank, and an automatic controller, where the first reaction tank, the second reaction tank, and the automatic controller are sequentially connected, and the automatic controller is further connected to the first reaction tank; the method comprises the following steps: the first reaction tank obtains input sewage, carries out short-cut nitrification reaction on the sewage, and simultaneously removes chemical oxygen demand in the sewage; inputting the sewage treated by the first reaction tank into a second reaction tank, and carrying out anaerobic ammonia oxidation reaction on the sewage to remove nitrogen in the sewage; and the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank are controlled by an automatic controller.
In a preferred embodiment of the present invention, the first reaction tank and the second reaction tank each comprise an online liquid level meter; the above-mentioned step of the water solenoid valve and the intake pump of intaking through automated controller control first reaction tank and second reaction tank includes: detecting the liquid level information of the sewage in the first reaction tank and the second reaction tank by an online liquid level meter, and sending the liquid level information to an automatic controller; and the automatic controller controls the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank based on the liquid level information.
In a preferred embodiment of the present invention, the first reaction tank and the second reaction tank each include a stirrer; the method further comprises the following steps: the reaction efficiency of the anaerobic ammonium oxidation bacteria is improved through the stirrer.
In a preferred embodiment of the present invention, the first reaction tank and the second reaction tank include: an online pH meter and an alkali adding pump; the method further comprises the following steps: detecting the PH information of the sewage in the first reaction tank and the second reaction tank through an online PH meter, and sending the PH information to an automatic controller; and the automatic controller controls the alkali adding pumps of the first reaction tank and the second reaction tank based on the PH information.
In a preferred embodiment of the present invention, the first reaction tank and the second reaction tank include: an online dissolved oxygen meter and a fan; the method further comprises the following steps: detecting dissolved oxygen information of the sewage in the first reaction tank and the second reaction tank by an online dissolved oxygen meter, and sending the dissolved oxygen information to an automatic controller; the automatic controller controls fans of the first reaction tank and the second reaction tank based on the dissolved oxygen information.
In a preferred embodiment of the present invention, the first reaction tank and the second reaction tank include: an online thermometer and a heater; the method further comprises the following steps: detecting temperature information of the sewage in the first reaction tank and the second reaction tank through an online temperature meter, and sending the temperature information to an automatic controller; the automated controller controls the heaters of the first reaction and second reaction cells based on the temperature information.
In a preferred embodiment of the present invention, the first reaction tank and the second reaction tank include: an online thermometer and a heater; the first reaction tank and the second reaction tank include: the system comprises an online ammonia nitrogen instrument, a fan, a dosing pump, a heating instrument and a stirrer; the method further comprises the following steps: detecting ammonia nitrogen information of sewage in the first reaction tank and the second reaction tank by an online ammonia nitrogen instrument, and sending the ammonia nitrogen information to an automatic controller; the automatic controller controls the fans, the dosing pumps, the heating instruments and the stirrers of the first reaction tank and the second reaction tank based on ammonia nitrogen information.
In a preferred embodiment of the present invention, the sewage treatment system further comprises an intermediate water tank and a water production tank, wherein the intermediate water tank is disposed between the first reaction tank and the second reaction tank, and the water production tank is connected to the second reaction tank; the first reaction tank and the second reaction tank comprise water decanters; after the step of performing the short-cut nitrification reaction on the sewage, the method further comprises the following steps: inputting the sewage treated by the first reaction tank into an intermediate water tank through a decanter of the first reaction tank; after the step of performing anammox reaction on the wastewater, the method further comprises: and conveying the sewage treated by the second reaction tank into a water producing tank through a decanter of the second reaction tank.
In a second aspect, an embodiment of the present invention further provides a sewage treatment apparatus, which is applied to a sewage treatment system, where the sewage treatment system includes a first reaction tank, a second reaction tank, and an automation controller, where the first reaction tank, the second reaction tank, and the automation controller are sequentially connected, and the automation controller is further connected to the first reaction tank; the device comprises: the sewage short-cut nitrification reaction module is used for acquiring input sewage by the first reaction tank, carrying out short-cut nitrification reaction on the sewage and removing chemical oxygen demand in the sewage; the sewage anaerobic ammonia oxidation module is used for inputting the sewage treated by the first reaction tank into the second reaction tank and carrying out anaerobic ammonia oxidation reaction on the sewage so as to remove nitrogen in the sewage; and the automatic control module is used for controlling the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank through the automatic controller.
In a third aspect, an embodiment of the present invention further provides an electronic device, which includes a processor and a memory, where the memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the steps of the above-mentioned sewage treatment method.
The embodiment of the invention has the following beneficial effects:
according to the sewage treatment method, the sewage treatment device and the electronic equipment provided by the embodiment of the invention, the first reaction tank carries out short-cut nitrification reaction on the sewage, the second reaction tank carries out anaerobic ammonium oxidation reaction on the sewage, and the automatic controller controls the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank. The mode can be automatically controlled by an automatic controller, manual operation is not needed, and labor cost and medicament cost can be saved; the first reaction tank and the second reaction tank are respectively used for carrying out short-cut nitrification reaction and anaerobic ammonia oxidation reaction, so that the activity of anaerobic ammonia oxidation bacteria can be increased, and the sewage treatment efficiency can be improved.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part may be learned by the practice of the above-described techniques of the disclosure, or may be learned by practice of the disclosure.
In order to make the aforementioned objects, features and advantages of the present disclosure more 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 schematic view of a sewage treatment system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a wastewater treatment method according to an embodiment of the present invention;
FIG. 3 is a side view of a wastewater treatment system according to an embodiment of the present invention;
FIG. 4 is a bottom view of a wastewater treatment system according to an embodiment of the present invention;
FIG. 5 is a flow chart of another method for treating wastewater according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a sewage treatment apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
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.
At present, in the existing scheme, both the short-cut nitrification reaction and the anaerobic ammonia oxidation reaction are carried out through one reaction tank, and corresponding operations of different reactions are carried out manually. However, it is difficult to control the reaction conditions of anammox bacteria, and the reaction conditions are influenced alternately to suppress the activity of anammox bacteria. Moreover, the above scheme requires certain labor cost to operate, and wastes time and labor. Based on this, the embodiment of the invention provides a sewage treatment method, a sewage treatment device and an electronic device, and particularly relates to an efficient two-section type SBR (Sequencing Batch Reactor Activated Sludge Process) anaerobic ammonia oxidation denitrification self-control reaction device.
For the convenience of understanding the present embodiment, a detailed description will be given of a sewage treatment method disclosed in the present embodiment.
The first embodiment is as follows:
the embodiment provides a sewage treatment method, which is applied to a sewage treatment system, wherein the sewage treatment system comprises a first reaction tank, a second reaction tank and an automatic controller, the first reaction tank, the second reaction tank and the automatic controller are sequentially connected, and the automatic controller is further connected with the first reaction tank.
Referring to fig. 1, a schematic diagram of a sewage treatment system is shown, in fig. 1, a reaction tank a is a first reaction tank, and a reaction tank B is a second reaction tank. In addition, the automation controller is arranged in the control cabinet. Based on the above description, referring to a flow chart of a sewage treatment method shown in fig. 2, the sewage treatment method includes the steps of:
and S202, the first reaction tank obtains the input sewage, performs short-cut nitrification reaction on the sewage, and simultaneously removes the chemical oxygen demand in the sewage.
In fig. 1, a front view of a sewage treatment system is shown, and reference is also made to a side view of a sewage treatment system as shown in fig. 3 and a bottom view of a sewage treatment system as shown in fig. 4. As shown in fig. 1, fig. 3 and fig. 4, the fixed sewage treatment system in this embodiment includes a first reaction tank and a second reaction tank, the bottoms of which are communicated, and a filler is disposed in the liquid of the first reaction tank and the liquid of the second reaction tank, a water distribution branch pipe is disposed above the filler, aeration branch pipes are disposed at the bottoms of the first reaction tank and the second reaction tank, the aeration branch pipes are communicated with an air blower, and the first reaction tank and the second reaction tank both have hyperboloid vertical flow stirrers.
Therefore, the method adopts the sewage treatment system to carry out two-stage treatment on the sludge anaerobic digestion liquid. Wherein, the first reaction tank carries out short-cut nitrification reaction on the sewage and simultaneously removes the chemical oxygen demand in the sewage.
And step S204, inputting the sewage treated by the first reaction tank into a second reaction tank, and carrying out anaerobic ammonia oxidation reaction on the sewage to remove nitrogen in the sewage.
After the step of performing the partial nitrification reaction on the sewage while removing the chemical oxygen demand from the sewage, the anaerobic ammonia oxidation reaction may be performed on the sewage to remove nitrogen from the sewage. The reaction can be quickly started through the first reaction tank and the second reaction tank, and meanwhile, the anaerobic ammonia oxidation reaction is efficiently carried out. In the embodiment, the C/N (carbon-nitrogen ratio) of the anaerobic sludge digestion solution is lower than 1/2, COD degradation is completed in the first reaction tank, and the anaerobic ammonia oxidation reaction in the second reaction tank is not inhibited. And the one-stage reaction of the second reaction tank can be realized by combining a rear-end continuous flow intermittent aeration mode, so that the effects of two-stage cooperative and efficient treatment are achieved.
And S206, controlling the water inlet electromagnetic valves and the water inlet pumps of the first reaction tank and the second reaction tank through the automatic controller.
Various monitoring indexes of the sewage of the first reaction tank and the second reaction tank can be displayed through the control of the automatic controller, such as: temperature, PH, etc. The automatic controller controls the water inlet electromagnetic valve and the water inlet pump which can automatically control the first reaction tank and the second reaction tank, thereby realizing automatic sewage treatment in an unmanned state.
According to the sewage treatment method provided by the embodiment of the invention, the first reaction tank performs a short-cut nitrification reaction on sewage, the second reaction tank performs an anaerobic ammonia oxidation reaction on sewage, and the automatic controller controls the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank. The mode can be automatically controlled by an automatic controller, manual operation is not needed, and labor cost and medicament cost can be saved; the first reaction tank and the second reaction tank are respectively used for carrying out short-cut nitrification reaction and anaerobic ammonia oxidation reaction, so that the activity of anaerobic ammonia oxidation bacteria can be increased, and the sewage treatment efficiency can be improved.
Example two:
the embodiment provides another sewage treatment method, which is realized on the basis of the embodiment; this embodiment focuses on the specific implementation of controlling the water inlet solenoid valve and the water inlet pump of the first reaction tank and the second reaction tank by the automatic controller. Referring to fig. 5, another flow chart of the sewage treatment method is shown, and the sewage treatment method in this embodiment includes the steps of:
and S502, the first reaction tank obtains the input sewage, carries out short-cut nitrification reaction on the sewage, and simultaneously removes the chemical oxygen demand in the sewage.
And step S504, inputting the sewage treated by the first reaction tank into a second reaction tank, and carrying out anaerobic ammonia oxidation reaction on the sewage to remove nitrogen in the sewage.
The two-stage SBR anaerobic ammonia oxidation in the embodiment can avoid the inhibition of high-concentration COD on anaerobic ammonia oxidizing bacteria, the COD can be greatly reduced in the first reaction tank, and then the COD enters the second reaction tank, so that the activity of the anaerobic ammonia oxidizing bacteria can not be inhibited.
The first reaction tank and the second reaction tank in this embodiment both include the agitator, and the reaction efficiency of anammox bacteria can be improved through the agitator. Above-mentioned agitator can be hyperboloid vertical flow agitator, can guarantee anammox fungus, both can fully and water contact, can keep anaerobic environment again, improves anammox fungus's reaction efficiency.
Wherein, through two segmentation SBR anaerobic ammonia oxidation dissolved oxygen control range is wider, only consider the free ammonia of first reaction tank just can, simple safety on technical operation like this.
95-97% ammonia nitrogen is converted into nitrite through complete short-cut nitrification in the first reaction tank, and then water is distributed with inlet raw water according to the proportion of 1.32:1, so that the anaerobic ammonia oxidation reaction is realized, and the high-efficiency anaerobic ammonia oxidation reaction in the second part can be realized through the rapid reaction in the first reaction tank. By adding the special filler, the anaerobic ammonia oxidation sludge in the second reaction tank can be attached to the filler, a strict anaerobic environment is formed in the filler, and the reaction efficiency is higher.
The embodiment aims to provide a biological denitrification device for low carbon nitrogen (C/N) ratio high-concentration ammonia nitrogen wastewater, which is simple to operate, is automatically controlled in the whole process, is high in efficiency, and particularly realizes complete short-cut nitrification of sludge digestive juice rich in ammonia nitrogen in urban sewage plants by PLC control, and part of COD is removed in the reaction; and under the condition that no organic carbon source exists in the second step of reaction, nitrogen in the digestion solution is removed through anaerobic ammonia oxidation reaction to complete autotrophic biological denitrification, so that the method is suitable for biological denitrification of high ammonia nitrogen wastewater with low C/N ratio of sludge digestion solution.
And S506, detecting the liquid level information of the sewage in the first reaction tank and the second reaction tank by an online liquid level meter, and sending the liquid level information to an automatic controller.
And step S508, controlling the water inlet electromagnetic valves and the water inlet pumps of the first reaction tank and the second reaction tank by the automatic controller based on the liquid level information.
The automatic Controller in this embodiment may be a PLC (Programmable Logic Controller), and through PLC automatic control, values are monitored by an online instrument, so that cost is saved and energy consumption is reduced.
Wherein the short-cut nitration reaction is to react NH4 +To NO2- -N. The specific inventive principle of the embodiment is as follows: the raw water feeds back information to the PLC automatic control system through an online liquid level meter of the first reaction tank, the automatic control system starts to feed back the information to the water inlet pump, the water inlet electromagnetic valve and the water inlet pump are opened, the raw water firstly enters the first reaction tank, when the water level of the first reaction tank reaches the highest liquid level, the online liquid level meter feeds back the information to the PLC automatic control system, and the water inlet pump and the water inlet electromagnetic valve of the automatic control system are closed.
The first reaction tank and the second reaction tank in this embodiment both include a stirrer; the method further comprises the following steps: the reaction efficiency of the anaerobic ammonium oxidation bacteria is improved through the stirrer. After the water inlet pump and the water inlet electromagnetic valve of the automatic control system are closed, the stirrer can be opened, and the reaction efficiency of the anaerobic ammonia oxidizing bacteria is improved through the stirrer.
The first reaction tank and the second reaction tank in this embodiment include: an online pH meter and an alkali adding pump; the method further comprises the following steps: detecting the PH information of the sewage in the first reaction tank and the second reaction tank through an online PH meter, and sending the PH information to an automatic controller; and the automatic controller controls the alkali adding pumps of the first reaction tank and the second reaction tank based on the PH information. After the stirrer is started, the pH value is fed back to the PLC automatic control system by the on-line pH meter, and the PCL automatic control system starts and stops the alkali adding pump according to the set range of the system.
The first reaction tank and the second reaction tank in this embodiment include: an online dissolved oxygen meter and a fan; the method further comprises the following steps: detecting dissolved oxygen information of the sewage in the first reaction tank and the second reaction tank by an online dissolved oxygen meter, and sending the dissolved oxygen information to an automatic controller; the automatic controller controls fans of the first reaction tank and the second reaction tank based on the dissolved oxygen information. The online Dissolved Oxygen meter feeds back the Dissolved Oxygen (DO) value to the PLC automatic control system, and the PLC automatic control system starts and closes the fan according to the set range.
The first reaction tank and the second reaction tank in this embodiment include: an online thermometer and a heater; the method further comprises the following steps: detecting temperature information of the sewage in the first reaction tank and the second reaction tank through an online temperature meter, and sending the temperature information to an automatic controller; the automated controller controls the heaters of the first reaction and second reaction cells based on the temperature information. The online temperature meter feeds the temperature T value back to the PLC automatic control system, and the PLC automatic control system starts and stops the heating meter according to the set range.
The first reaction tank and the second reaction tank in this embodiment include: the system comprises an online ammonia nitrogen instrument, a fan, a dosing pump, a heating instrument and a stirrer; the method further comprises the following steps: detecting ammonia nitrogen information of sewage in the first reaction tank and the second reaction tank by an online ammonia nitrogen instrument, and sending the ammonia nitrogen information to an automatic controller; the automatic controller controls the fans, the dosing pumps, the heating instruments and the stirrers of the first reaction tank and the second reaction tank based on ammonia nitrogen information.
When the ammonia nitrogen value reaches a set value, the online ammonia nitrogen instrument feeds the value back to the PLC automatic control system, the PLC automatic control system starts to close the fan, the dosing pump, the heating instrument and the stirrer, complete short-cut nitrification is finished, and the system starts to stand for 1 hour.
In addition, the sewage treatment system also comprises an intermediate water tank and a water production tank, wherein the intermediate water tank is arranged between the first reaction tank and the second reaction tank, and the water production tank is connected with the second reaction tank; the first reaction tank and the second reaction tank comprise water decanters; after the step of performing the short-cut nitrification reaction on the sewage, the method further comprises the following steps: and conveying the sewage treated by the first reaction tank into an intermediate water tank through a decanter of the first reaction tank.
After the first reaction tank is kept still for 1 hour, the PLC automatic control system starts to start the decanter of the first reaction tank, starts to decant water to the intermediate water tank, automatically rises when the decanter reaches a set value, and when the decanter rises to the highest position, a limiter feeds back information to the PLC automatic control system, and the PLC automatic control system starts to feed water to the first reaction tank in the next period.
After the step of performing anammox reaction on the wastewater, the method further comprises: and conveying the sewage treated by the second reaction tank into a water producing tank through a decanter of the second reaction tank.
After the water in the first reaction tank is decanted into the middle water tank, the water reaches the highest position, the liquid level meter feeds information back to the PLC automatic control system, the PLC automatic control system starts to start a water inlet electromagnetic valve and a water inlet pump of the second reaction tank, simultaneously starts the water inlet electromagnetic valve and the water inlet pump of the middle water tank, the water enters the second reaction tank according to the proportion of 1:1.32, when the water level of the second reaction tank reaches the highest liquid level, the online liquid level meter feeds information back to the PLC automatic control system, the water inlet pump and the water inlet electromagnetic valve of the automatic control system are closed, the stirring system is started, meanwhile, the online PH meter feeds the PH value back to the PLC automatic control system, and the PCL automatic control system starts and closes the acid adding pump according; feeding the ORP value of the oxidation-reduction electrode back to the PLC automatic control system by the online dissolved oxygen meter, and starting and closing reflux by the PLC automatic control system according to the set range; the online thermometer feeds back the temperature T value to the PLC automatic control system, and the PLC automatic control system starts and stops heating according to the set range; when the ammonia nitrogen value reaches a set value, the online ammonia nitrogen instrument feeds the value back to the PLC automatic control system, the PLC automatic control system starts to close stirring, the dosing pump, the heating instrument and the reflux device, the anaerobic ammoxidation reaction is finished, the anaerobic ammoxidation reaction starts to stand for 1 hour, after 1 hour, the PLC automatic control system starts to open the decanter of the second reaction tank, starts to decant water to the water production tank, automatically rises when the decanter reaches the set value, when the decanter rises to the highest position, a limiter feeds back information to the PLC automatic control system, and the PLC automatic control system starts to feed water to the second reaction tank in the next period.
According to the method provided by the embodiment of the invention, complete partial nitrification and anaerobic ammonia oxidation reaction can be efficiently realized through the PLC automatic control system. All important indexes are monitored in real time through an online instrument, and indexes such as a pH value, dissolved oxygen DO, a temperature T, an oxidation-reduction electrode ORP and the like can effectively and reasonably turn on and off equipment, so that energy consumption is greatly reduced, and reaction efficiency is greatly improved; due to the whole-process automatic control, the labor cost and the medicament cost can be saved.
In the method, the ammonia nitrogen and the nitrite nitrogen are fed in proportionally through efficient complete shortcut nitrification and raw water, and the appropriate reaction ratio (1:1.32) of the ammonia nitrogen and the nitrite nitrogen is easier to realize, so that the reaction efficiency is higher, the total nitrogen removal rate is high, and the problem that the chemical reaction ratio of the half-shortcut nitrification ammonia nitrogen and the nitrite nitrogen is not matched in the prior art is avoided, and the subsequent risk that the total nitrogen exceeds the standard is caused.
In the mode, all important indexes are detected by the online instrument, and the online instrument not only has a real-time detection function, but also has a real-time storage function, so that data can be conveniently downloaded, and the reaction process can be effectively analyzed and evaluated. Because the first reaction tank is also provided with the heating system, complete short-cut nitrification can realize reaction at the optimal temperature, the rate of converting ammonia nitrogen into nitrite nitrogen can be greatly improved, the reaction time is shortened, and the conversion rate and the reaction time can be influenced because the conventional short-cut nitrification generally has no temperature maintaining system.
In conclusion, the PH of the first reaction tank is completely adjusted by PLC according to the control of an on-line instrument, the PH is maintained at 7.0-8.3, and the adjustment is realized by adding sodium hydroxide or sodium carbonate. The dissolved oxygen DO of the first reaction tank is realized by controlling a fan through a PLC according to an online instrument, the dissolved oxygen DO is maintained at 2-4mg/L, and the air volume is controlled by controlling an electromagnetic valve switch. The temperature T of the first reaction tank is realized by controlling electric heating through a PLC according to an on-line instrument, the temperature T is maintained at 25-30 ℃, and the temperature of inlet water is increased through electric heating.
In addition, the decanting water of the first reaction tank is controlled by the PLC according to the ammonia nitrogen concentration of an online instrument, the water inlet of the first reaction tank is controlled by the PLC according to a liquid level meter of the online instrument, the oxidation-reduction electrode ORP of the second reaction tank is controlled by the PLC according to the reflux ratio, and the oxidation-reduction electrode is maintained between 0mv and-40 mv. The dissolved oxygen DO of the second reaction tank is monitored by a PLC according to an on-line instrument, and the dissolved oxygen is maintained at 0mg/L-0.2 mg/L. The PH value of the second reaction tank is controlled by a PLC according to an on-line instrument to add medicine, the PH value is maintained at 7.0-8.5, and the pH value is realized by adding phosphoric acid or potassium dihydrogen phosphate.
In addition, the water inlet of the second reaction tank is controlled by the PLC according to the on-line instrument liquid level meter, and the water inlet proportion of the second reaction tank is controlled by the PLC according to the opening degree of the electromagnetic valve of the pipeline. The decanting water of the second reaction tank is controlled by the PLC according to the ammonia nitrogen concentration of the on-line instrument, the temperature T of the second reaction tank is realized by the PLC according to the control heating of the on-line instrument, the temperature is maintained at 33-35 ℃, and the temperature is maintained by electric heating.
Example three:
corresponding to the method embodiment, the embodiment of the invention provides a sewage treatment device, which is applied to a sewage treatment system, wherein the sewage treatment system comprises a first reaction tank, a second reaction tank and an automatic controller, the first reaction tank, the second reaction tank and the automatic controller are sequentially connected, and the automatic controller is also connected with the first reaction tank; referring to fig. 6, a sewage treatment apparatus is shown, which comprises:
the sewage short-cut nitrification reaction module 61 is used for acquiring input sewage by the first reaction tank, carrying out short-cut nitrification reaction on the sewage and removing chemical oxygen demand in the sewage at the same time;
the sewage anaerobic ammonia oxidation module 62 is used for inputting the sewage treated by the first reaction tank into the second reaction tank, and performing anaerobic ammonia oxidation reaction on the sewage to remove nitrogen in the sewage;
and the automatic control module 63 is used for controlling the water inlet electromagnetic valves and the water inlet pumps of the first reaction tank and the second reaction tank through an automatic controller.
According to the sewage treatment device provided by the embodiment of the invention, the first reaction tank performs a short-cut nitrification reaction on sewage, the second reaction tank performs an anaerobic ammonia oxidation reaction on sewage, and the automatic controller controls the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank. The mode can be automatically controlled by an automatic controller, manual operation is not needed, and labor cost and medicament cost can be saved; the first reaction tank and the second reaction tank are respectively used for carrying out short-cut nitrification reaction and anaerobic ammonia oxidation reaction, so that the activity of anaerobic ammonia oxidation bacteria can be increased, and the sewage treatment efficiency can be improved.
The first reaction tank and the second reaction tank comprise online liquid level meters; the automatic control module is also used for detecting the liquid level information of the sewage in the first reaction tank and the second reaction tank through an online liquid level meter and sending the liquid level information to the automatic controller; and the automatic controller controls the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank based on the liquid level information.
The first reaction tank and the second reaction tank comprise stirrers; the device also comprises a stirring module which is used for improving the reaction efficiency of the anaerobic ammonia oxidizing bacteria through the stirrer.
The first reaction tank and the second reaction tank each include: an online pH meter and an alkali adding pump; the device also comprises a PH information processing module, a pH value acquisition module and an automatic controller, wherein the PH information processing module is used for detecting the PH information of the sewage in the first reaction tank and the second reaction tank through an online PH meter and sending the PH information to the automatic controller; and the automatic controller controls the alkali adding pumps of the first reaction tank and the second reaction tank based on the PH information.
The first reaction tank and the second reaction tank each include: an online dissolved oxygen meter and a fan; the device also comprises a dissolved oxygen information processing module which is used for detecting the dissolved oxygen information of the sewage in the first reaction tank and the second reaction tank through an online dissolved oxygen instrument and sending the dissolved oxygen information to the automatic controller; the automatic controller controls fans of the first reaction tank and the second reaction tank based on the dissolved oxygen information.
The first reaction tank and the second reaction tank each include: an online thermometer and a heater; the device also comprises a temperature information processing module which is used for detecting the temperature information of the sewage in the first reaction tank and the second reaction tank through an online temperature meter and sending the temperature information to the automatic controller; the automated controller controls the heaters of the first reaction and second reaction cells based on the temperature information.
The first reaction tank and the second reaction tank each include: the system comprises an online ammonia nitrogen instrument, a fan, a dosing pump, a heating instrument and a stirrer; the device also comprises an ammonia nitrogen information processing module, a first reaction tank and a second reaction tank, wherein the ammonia nitrogen information processing module is used for detecting ammonia nitrogen information of sewage in the first reaction tank and the second reaction tank through an online ammonia nitrogen instrument and sending the ammonia nitrogen information to the automatic controller; the automatic controller controls the fans, the dosing pumps, the heating instruments and the stirrers of the first reaction tank and the second reaction tank based on ammonia nitrogen information.
The sewage treatment system also comprises an intermediate water tank and a water production tank, wherein the intermediate water tank is arranged between the first reaction tank and the second reaction tank, and the water production tank is connected with the second reaction tank; the first reaction tank and the second reaction tank comprise water decanters; the device also comprises an intermediate water tank module which is used for inputting the sewage treated by the first reaction tank into the intermediate water tank through the decanter of the first reaction tank; the middle water tank module is also used for inputting the sewage treated by the second reaction tank into the water producing tank through the decanter of the second reaction tank.
The sewage treatment device provided by the embodiment of the invention has the same realization principle and technical effect as the sewage treatment method embodiment, and for brief description, the corresponding content in the sewage treatment method embodiment can be referred to where the sewage treatment device embodiment is not mentioned.
Example four:
the embodiment of the invention also provides electronic equipment for operating the sewage treatment method; referring to fig. 7, a schematic structural diagram of an electronic device is shown, the electronic device includes a memory 100 and a processor 101, wherein the memory 100 is used for storing one or more computer instructions, and the one or more computer instructions are executed by the processor 101 to implement the above-mentioned sewage treatment method.
Further, the electronic device shown in fig. 7 further includes a bus 102 and a communication interface 103, and the processor 101, the communication interface 103, and the memory 100 are connected through the bus 102.
The Memory 100 may include a high-speed Random Access Memory (RAM) and may further include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 103 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like can be used. The bus 102 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 7, but this does not indicate only one bus or one type of bus.
The processor 101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 101. The Processor 101 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 100, and the processor 101 reads the information in the memory 100, and completes the steps of the method of the foregoing embodiment in combination with the hardware thereof.
The embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are called and executed by a processor, the computer-executable instructions cause the processor to implement the above sewage treatment method.
The sewage treatment method, the sewage treatment device and the computer program product of the electronic device provided by the embodiment of the invention comprise a computer readable storage medium storing program codes, wherein instructions included in the program codes can be used for executing the method in the previous method embodiment, and specific implementation can refer to the method embodiment, and is not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and/or the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units 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, an electronic device, or a network device) to perform 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 the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A sewage treatment method is characterized by being applied to a sewage treatment system, wherein the sewage treatment system comprises a first reaction tank, a second reaction tank and an automatic controller, wherein the first reaction tank, the second reaction tank and the automatic controller are sequentially connected, and the automatic controller is also connected with the first reaction tank; the method comprises the following steps:
the first reaction tank obtains input sewage, carries out short-cut nitrification reaction on the sewage, and simultaneously removes chemical oxygen demand in the sewage;
inputting the sewage treated by the first reaction tank into the second reaction tank, and carrying out anaerobic ammonia oxidation reaction on the sewage to remove nitrogen in the sewage;
and controlling the water inlet electromagnetic valves and the water inlet pumps of the first reaction tank and the second reaction tank by the automatic controller.
2. The method of claim 1, wherein the first reaction and the second reaction cell comprise each comprise an online level gauge;
controlling the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank through the automatic controller, wherein the steps comprise:
detecting liquid level information of sewage in the first reaction tank and the second reaction tank through the online liquid level meter, and sending the liquid level information to the automatic controller;
and the automatic controller controls a water inlet electromagnetic valve and a water inlet pump of the first reaction tank and the second reaction tank based on the liquid level information.
3. The method of claim 1, wherein the first reaction cell and the second reaction cell comprise: a stirrer; the method further comprises the following steps:
the reaction efficiency of the anaerobic ammonium oxidation bacteria is improved through the stirrer.
4. The method of claim 1, wherein the first reaction cell and the second reaction cell comprise: an online pH meter and an alkali adding pump; the method further comprises the following steps:
detecting the PH information of the sewage in the first reaction tank and the second reaction tank through the online PH meter, and sending the PH information to the automatic controller;
and the automatic controller controls the alkali adding pumps of the first reaction tank and the second reaction tank based on the PH information.
5. The method of claim 1, wherein the first reaction cell and the second reaction cell comprise: an online dissolved oxygen meter and a fan; the method further comprises the following steps:
detecting dissolved oxygen information of the sewage in the first reaction tank and the second reaction tank through the online dissolved oxygen meter, and sending the dissolved oxygen information to the automatic controller;
the automatic controller controls fans of the first reaction tank and the second reaction tank based on the dissolved oxygen information.
6. The method of claim 1, wherein the first reaction cell and the second reaction cell comprise: an online thermometer and a heater; the method further comprises the following steps:
detecting temperature information of the sewage in the first reaction tank and the second reaction tank through the online temperature meter, and sending the temperature information to the automatic controller;
the automated controller controls the heaters of the first reaction cell and the second reaction cell based on the temperature information.
7. The method of claim 1, wherein the first reaction cell and the second reaction cell comprise: the system comprises an online ammonia nitrogen instrument, a fan, a dosing pump, a heating instrument and a stirrer; the method further comprises the following steps:
detecting ammonia nitrogen information of sewage in the first reaction tank and the second reaction tank through the online ammonia nitrogen instrument, and sending the ammonia nitrogen information to the automatic controller;
the automatic controller controls the fan, the dosing pump, the heater and the stirrer of the first reaction tank and the second reaction tank based on the ammonia nitrogen information.
8. The method of claim 1, wherein the wastewater treatment system further comprises an intermediate water basin disposed between the first reaction basin and the second reaction basin, and a water production basin connected to the second reaction basin; the first reaction tank and the second reaction tank comprise a decanter;
after the step of subjecting the wastewater to a short-cut nitrification reaction, the method further comprises:
inputting the sewage treated by the first reaction tank into the intermediate water tank through a decanter of the first reaction tank;
after the step of subjecting the wastewater to an anammox reaction, the method further comprises:
and inputting the sewage treated by the second reaction tank into the water producing tank through a decanter of the second reaction tank.
9. A sewage treatment device is characterized by being applied to a sewage treatment system, wherein the sewage treatment system comprises a first reaction tank, a second reaction tank and an automatic controller, wherein the first reaction tank, the second reaction tank and the automatic controller are sequentially connected, and the automatic controller is also connected with the first reaction tank; the device comprises:
the sewage short-cut nitrification reaction module is used for acquiring input sewage by the first reaction tank, carrying out short-cut nitrification reaction on the sewage and simultaneously removing chemical oxygen demand in the sewage;
the sewage anaerobic ammonia oxidation module is used for inputting the sewage treated by the first reaction tank into the second reaction tank and carrying out anaerobic ammonia oxidation reaction on the sewage so as to remove nitrogen in the sewage;
and the automatic control module is used for controlling the water inlet electromagnetic valve and the water inlet pump of the first reaction tank and the second reaction tank through the automatic controller.
10. An electronic device, characterized in that the electronic device comprises: the device comprises an image acquisition device, a processing device and a storage device;
the image acquisition equipment is used for acquiring an image;
the storage means has stored thereon a computer program which, when executed by the treatment apparatus, performs the sewage treatment method according to any one of claims 1 to 8.
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Application publication date: 20210427 |