CN117326676B - Wastewater treatment system based on ozone generator - Google Patents
Wastewater treatment system based on ozone generator Download PDFInfo
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- CN117326676B CN117326676B CN202311633438.9A CN202311633438A CN117326676B CN 117326676 B CN117326676 B CN 117326676B CN 202311633438 A CN202311633438 A CN 202311633438A CN 117326676 B CN117326676 B CN 117326676B
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 351
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 219
- 239000002351 wastewater Substances 0.000 claims abstract description 117
- 238000006243 chemical reaction Methods 0.000 claims abstract description 77
- 230000003197 catalytic effect Effects 0.000 claims abstract description 72
- 230000003647 oxidation Effects 0.000 claims abstract description 53
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 53
- 239000003054 catalyst Substances 0.000 claims abstract description 31
- 239000000126 substance Substances 0.000 claims abstract description 18
- 239000013076 target substance Substances 0.000 claims description 244
- 238000000746 purification Methods 0.000 claims description 151
- 238000011282 treatment Methods 0.000 claims description 39
- 230000035484 reaction time Effects 0.000 claims description 15
- 150000002500 ions Chemical class 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000011272 standard treatment Methods 0.000 claims description 12
- 238000011221 initial treatment Methods 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 3
- 239000013077 target material Substances 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 abstract description 10
- 239000008213 purified water Substances 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 41
- 238000010586 diagram Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system based on an ozone generator, which comprises a water inlet, a reaction tank, the ozone generator, a wastewater measuring instrument, a tail gas concentration meter, a dissolved air pump, a water outlet and a purified water controller. According to the invention, whether the real-time ozone generation amount of the ozone generator is regulated or not and whether the dissolved air pump is started to enter the deep catalytic oxidation purified water is judged according to the real-time removal rate detected in real time and the calculated real-time removal rate difference by the purified water controller, the situation that the ozone amount is insufficient or wasted in direct oxidation is avoided by regulating the generation amount of the ozone generator according to the real-time condition of wastewater treatment, the dissolved air pump is started to introduce a catalyst after the direct oxidation is finished, the catalytic oxidation is carried out on organic substances difficult to degrade in the wastewater, the ozone amount and the areas of the wastewater and the catalyst are detected and regulated in real time, the accuracy of ozone amount throwing is ensured, the complete oxidation of wastewater pollutants is facilitated, and the ozone loss is avoided.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system based on an ozone generator.
Background
Ozone oxidation technology has been widely used in recent years in the deep treatment of industrial wastewater due to the high oxidation-reduction potential (2.07V) of ozone in water. For organic matters which cannot be degraded or cannot be completely degraded, the high-activity hydroxyl free radicals formed by decomposing ozone in water are utilized to carry out deep oxidation, and are converted into small molecular compounds, water and carbon dioxide, so that the purifying effect is achieved, and the process is called as an advanced oxidation process. Ozone has low solubility in water, and when gas-liquid mixing is insufficient, mass transfer efficiency is low, so that ozone loss is large, pollutants cannot be completely oxidized in a short time at low dosage, and treatment effect is difficult to achieve.
Chinese patent publication No.: CN104150578 discloses an ozone catalytic oxidation water treatment device, which is technically characterized in that ozone adding units with different numbers and hydrogen peroxide adding units are respectively arranged at the bottom, the middle and the upper part of the treatment device, and tail gas is sent to a destruction system after defoaming. Therefore, when the ozone catalytic oxidation water treatment device lacks to treat a water sample by a certain strong oxidant in wastewater treatment, the real-time monitoring of the consumed oxidant amount can not judge the required ozone amount in time.
Disclosure of Invention
Therefore, the invention provides a wastewater treatment system based on an ozone generator, which is used for solving the problems that when a water sample is treated by a certain strong oxidant in wastewater treatment in the prior art, the consumed oxidant amount is not monitored in real time, the ozone amount is inaccurate, pollutants cannot be completely oxidized, and the ozone loss is large.
In order to achieve the above object, the present invention provides a wastewater treatment system based on an ozone generator, comprising,
the ion meter is arranged in the water inlet and used for detecting the concentration of a first target substance in the wastewater to be treated, which passes through the water inlet;
the reaction tank is connected with the water inlet and used for storing wastewater to be treated discharged from the water inlet, a sprayer is arranged at the top of the reaction tank, a catalyst layer is arranged at the lower part of the sprayer, and the catalyst layer is used for catalyzing ozone in the wastewater to be treated sprayed by the sprayer;
the ozone generator is connected with the reaction tank and used for generating ozone and introducing the ozone into the reaction tank, and the real-time ozone generation amount of the ozone generator can be adjusted;
the wastewater determinator is arranged at the bottom of the reaction tank and used for detecting the real-time ozone concentration, the real-time first target substance concentration and the real-time second target substance concentration of the wastewater to be treated in the reaction tank;
The tail gas concentration meter is arranged at the top end of the interior of the reaction tank and is used for detecting the real-time ozone concentration in the air in the reaction tank;
the dissolved air pump is arranged on one side of the reaction tank and connected with the ozone generator, and is used for extracting wastewater to be treated at the bottom of the reaction tank, conveying the wastewater to the sprayer and spraying the wastewater, and the dissolved air pump can also charge ozone generated by the ozone generator into the extracted wastewater to be treated;
the water purification controller is respectively connected with the water inlet, the reaction tank, the ozone generator, the wastewater measuring instrument, the tail gas concentration meter and the dissolved air pump, and is used for determining whether to start the dissolved air pump to carry out deep catalytic oxidation water purification or whether to adjust the real-time ozone generation amount according to the real-time ozone concentration under a first preset condition, determining whether to start the dissolved air pump according to the current treatment duration of the reaction tank under a second preset condition, and filling ozone generated by the ozone generator into the extracted wastewater to be treated;
the first preset condition is that the real-time removal rate difference of the first target substance is larger than the standard removal rate difference and the real-time removal rate of the first target substance is smaller than the standard removal rate;
The second preset condition is that the real-time removal rate difference of the first target substance is larger than the standard removal rate difference, the real-time removal rate of the first target substance is smaller than the standard removal rate, and the real-time ozone concentration is between the first preset ozone concentration and the second preset ozone concentration.
Further, a first target substance standard removal rate difference is arranged in the water purifying controller, the water purifying controller can calculate the first target substance standard removal rate according to the detection result of the ion instrument at the water inlet, calculate the real-time removal rate according to the real-time first target substance concentration of the wastewater to be treated detected by the wastewater detector, calculate the real-time removal rate difference according to the first target substance standard removal rate and the real-time removal rate,
when the real-time removal rate difference of the first target substances is larger than the standard removal rate difference, the water purification controller compares and judges the standard removal rate of the first target substances with the real-time removal rate so as to determine the wastewater treatment state in the reaction tank;
wherein Δvs= |vs-vb|, Δvs is a real-time removal rate difference, vb is a first target substance standard removal rate, and Vs is a real-time removal rate.
Further, the water purification controller obtains the real-time removal rate of the first target substance, judges the real-time removal rate according to the standard removal rate of the first target substance,
when the real-time removal rate of the first target substances is smaller than the standard removal rate, the water purification controller judges the real-time ozone concentration in the wastewater to be treated so as to determine whether to start the dissolved air pump to carry out deep catalytic oxidation water purification;
when the real-time removal rate of the first target substance is greater than the standard removal rate, the water purification controller controls the tail gas ozone concentration meter to detect the ozone concentration in the tail gas so as to determine whether the water purification controller needs to adjust the real-time ozone generation amount of the ozone generator.
Further, a first preset ozone concentration and a second preset ozone concentration are arranged in the water purifying controller, the real-time ozone concentration in the wastewater to be treated is obtained through the wastewater measuring instrument, when the real-time removal rate of the first target substance is smaller than the standard removal rate, the real-time ozone concentration is judged according to the first preset ozone concentration and the second preset ozone concentration,
when the real-time ozone concentration is smaller than the first preset ozone concentration, the water purification controller adjusts the real-time ozone generation amount of the ozone generator to Cs';
When the real-time ozone concentration is between the first preset ozone concentration and the second preset ozone concentration, the water purification controller judges the current treatment duration in the reaction tank to determine whether the water purification controller controls the opening of the dissolved air pump;
when the real-time ozone concentration is larger than a second preset ozone concentration, the water purification controller controls the dissolved air pump to be started, and the waste water to be treated at the bottom of the reaction tank is pumped by the dissolved air pump and is conveyed to the sprayer for spraying;
wherein Cs '=cs× [1+ (Vb-Vs)/Vb ], cs' is the adjusted real-time ozone generation amount of the ozone generator, cs is the real-time ozone generation amount of the ozone generator, vb is the first target substance standard removal rate, and Vs is the first target substance real-time removal rate.
Further, the water purification controller is internally provided with a standard treatment duration of a first water purification stage, when the real-time ozone concentration is between a first preset ozone concentration and a second preset ozone concentration, the water purification controller obtains the current treatment duration of the reaction tank,
when the current treatment time length of the reaction tank is longer than or equal to the standard treatment time length of the first water purification stage, the water purification controller controls the dissolved air pump to be started, the waste water to be treated at the bottom of the reaction tank is pumped by the dissolved air pump and is conveyed to the sprayer for spraying, and ozone generated by the ozone generator is filled into the pumped waste water to be treated.
Further, the water purification controller is provided with a second target substance standard concentration and a second target substance initial concentration, when the dissolved air pump is started, the water purification controller obtains the second target substance real-time concentration in the wastewater to be treated, and judges the second target substance real-time concentration according to the second target substance standard concentration,
when the real-time concentration of the second target substance is less than or equal to the standard concentration of the second target substance, the water purifying controller discharges the treated wastewater from the water outlet, and the water purifying treatment is finished;
and when the real-time concentration of the second target substance is larger than the standard concentration of the second target substance, the water purification controller calculates the real-time catalytic removal rate of the second target substance according to the initial concentration of the second target substance and the real-time concentration of the second target substance so as to determine whether to rotationally adjust the catalyst layer.
Further, the water purification controller is also provided with a second target substance standard catalytic removal rate, when the real-time concentration of the second target substance is larger than the second target substance standard concentration, the water purification controller calculates the second target substance real-time catalytic removal rate and judges the second target substance real-time catalytic removal rate according to the second target substance standard catalytic removal rate,
And when the real-time catalytic removal rate of the second target substance is smaller than the standard catalytic removal rate of the second target substance, the water purification controller rotates the catalyst layer by 35-45 degrees.
Further, a standard reaction time length is set in the water purification controller, when the water inlet discharges waste water to be treated, the ion instrument detects the concentration of a first target substance in the waste water to be treated passing through the water inlet in real time, and calculates the total amount of the first target substance in a sectional manner according to the concentration of the first target substance and the volume of the waste water to be treated, and the water purification controller calculates a standard removal rate according to the calculated total amount of the first target substance and the standard reaction time length;
wherein m=cz×qq, vb=m/t, M is the total amount of the first target substance, cz is the first target substance concentration, qq is the volume of wastewater to be treated discharged, t is the standard reaction time period, and Vb is the standard removal rate of the first target substance.
Further, the initial ozone generation amount X of the ozone generator is determined according to the total amount M of the first target substances, a first preset ozone amount X1, a second preset ozone amount X2, a third preset ozone amount X3, the total amount M1 of the first target substances, the total amount M2 of the second preset first target substances, a first preset time T1, a second preset time T2 and a third preset time T3 are arranged in the water purifying controller, when the water inlet discharges the wastewater to be treated, the water purifying controller compares the total amount M of the first target substances with the total amount M1 of the first preset first target substances and the total amount M2 of the second preset first target substances,
When M is less than or equal to M1, selecting a first preset ozone amount X1 as an initial ozone generation amount X in the water purification controller, and selecting a first preset time T1 as an initial treatment duration T;
when M1 is more than M and less than or equal to M2, selecting a second preset ozone amount X2 as an initial ozone generation amount X in the water purification controller, and selecting a second preset time T2 as an initial treatment duration T;
when M is more than M2, the water purifying controller selects a third preset ozone amount X3 as an initial ozone generation amount X, and selects a third preset time T3 as an initial treatment duration T.
Further, the water purification controller is internally provided with a tail gas standard ozone concentration, when the real-time removal rate of the first target substance is larger than the standard removal rate, the water purification controller obtains the real-time ozone concentration of the tail gas through the tail gas concentration meter, judges the real-time ozone concentration of the tail gas according to the standard ozone concentration of the tail gas,
when the real-time ozone concentration of the tail gas is larger than the standard ozone concentration of the tail gas, the water purifying controller reduces the real-time ozone generation amount of the ozone generator;
wherein CCs '=ccs× [1- (CCs-CCd)/CCd ], CCs' is the real-time ozone generation amount of the reduced ozone generator, CCs is the real-time ozone generation amount of the ozone generator when detecting the second target substance, and CCd is the standard ozone concentration of the tail gas.
Compared with the prior art, the method has the beneficial effects that the treatment of the wastewater is divided into two stages, the first stage is the direct oxidation treatment of the organic wastewater substances which are easy to degrade, the second stage is the catalytic oxidation treatment of the organic wastewater substances which are difficult to degrade, whether the real-time ozone generation amount of the ozone generator is regulated and whether the dissolved air pump is started to enter the deep catalytic oxidation water purification of the second stage is judged according to the real-time removal rate detected in real time and the calculated real-time removal rate difference by the water purification controller, the ozone generation amount is regulated according to the real-time condition of the wastewater treatment, so that the ozone is always put at a proper value, the condition that the ozone amount is insufficient or is wasted when the direct oxidation is not excessive or insufficient is avoided, the dissolved air pump is started to introduce a catalyst after the direct oxidation is completed, the catalytic oxidation of the organic substances which are difficult to degrade in the wastewater is further carried out, the state of the treatment is detected in real time is regulated, the ozone amount and the area of the wastewater and the catalyst are regulated, the accuracy of the ozone amount is ensured, the wastewater pollutant is completely oxidized, and the ozone consumption is avoided.
Further, the real-time removal rate difference is calculated according to the standard removal rate and the real-time removal rate of the first target substance by the water purification controller, then the time removal rate difference is judged according to the standard removal rate difference of the first target substance, the water purification controller can not adjust the current running state of the wastewater treatment system within the range of the standard removal rate difference, the running state is normal, if the running state exceeds the range of the standard removal rate difference, the wastewater treatment state in the reaction tank is determined through the specific real-time removal rate, and the condition that the state in the reaction tank is monitored in real time is ensured to be set with the standard removal rate difference, so that certain fault tolerance exists in the process of monitoring the reaction state.
Further, the real-time concentration of the first target substance is obtained in real time through the water purification controller, the real-time removal rate of the first target substance is calculated, whether the real-time ozone generation amount of the ozone generator is regulated or whether the water purification is performed by deep catalytic oxidation by starting the dissolved air pump is judged according to the standard removal rate of the first target substance, so that ozone loss caused when other substances cannot be rapidly oxidized after substances which are difficult to directly oxidize are avoided, and the catalytic oxidation of the second target substance can be effectively and directly performed after the first target substance is oxidized.
Further, when the water purification controller detects that the real-time removal rate of the first target substance is smaller than the standard removal rate, the real-time ozone concentration is obtained, whether the ozone is reduced and needs to be increased at the moment is judged, or whether the direct oxidation in the first stage is finished and the dissolved air pump is required to be started to enter the catalytic oxidation in the second stage is judged, the ozone concentration in the wastewater is monitored in real time, and the accuracy of the ozone input amount and the accuracy of the catalytic oxidation entering the next reaction stage are ensured.
Particularly, when the water purification controller is started at the dissolved air pump, namely, the catalytic oxidation stage is started, the water purification controller obtains the real-time concentration of the second target substance in the wastewater to be treated, and when the real-time concentration of the second target substance is smaller than or equal to the standard concentration of the second target substance, the catalytic oxidation process is finished at the moment, the continuous oxidation is not needed, and the water purification controller discharges the wastewater after the treatment from the water outlet; if the real-time concentration of the second target substance is larger than the standard concentration of the second target substance, the water purifying controller calculates the real-time catalytic removal rate of the second target substance, judges whether the current catalytic removal rate still meets the standard, avoids insufficient catalytic oxidation, ensures that the second target substance cannot be effectively removed, avoids mistakenly filling more ozone, and ensures the accuracy of the ozone input amount.
Particularly, when the treatment time length of the reaction tank is longer than or equal to the standard treatment time length of the first water purification stage, the dissolved air pump is started, ozone generated by the ozone generator is filled into the extracted wastewater to be treated, and the dissolved air pump is adopted for ozone addition, so that the continuous supplement of the ozone amount is realized, and the ozone amount required in the catalytic oxidation process is ensured.
Further, by determining the initial ozone generation amount and the treatment time period of the ozone generator according to the total amount M of the first target substances, the ozone generation amount and the treatment time period corresponding to different qualities are enabled to be larger when the quality is larger, sufficient ozone and reaction time are ensured when the substances are oxidized, and the accuracy of the ozone and the time is ensured when the substances are oxidized.
Further, by arranging the ozone concentration meter at the top of the reaction tank, the residual ozone amount in the tail gas is monitored, the material consumption is reduced, the emission of harmful gas is avoided, the real-time ozone concentration in the tail gas is larger than the standard ozone concentration in the tail gas, the real-time ozone generation amount of the ozone generator is reduced by the water purifying controller, the situation that more harmful gas cannot be discharged is ensured, the waste of ozone is avoided, and the accuracy of ozone feeding is improved.
In particular, the catalyst layer can rotate along two rotating shafts in the reaction tank, and the contact area between the waste water sprayed by the sprayer and the catalyst is controlled by rotating a certain angle, so that the phenomenon that the sprayed waste water and the catalyst are not completely fused is avoided, and the catalyst can more effectively act on the purified waste water.
Drawings
FIG. 1 is a schematic diagram of a wastewater treatment system based on an ozone generator according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a control connection of an ozone generator based wastewater treatment system according to an embodiment of the present invention;
FIG. 3 is a logic diagram of an overall ozone generator-based wastewater treatment system according to an embodiment of the present invention;
FIG. 4 is a logic diagram of catalytic oxidation of an ozone generator based wastewater treatment system according to an embodiment of the present invention;
fig. 5 is a side view of a catalyst layer according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, which is a schematic structural diagram of an ozone generator-based wastewater treatment system according to an embodiment of the present invention, the embodiment provides an ozone generator-based wastewater treatment system, which includes a water inlet 1, an ion meter 11, a reaction tank 2, a sprayer 21, a catalyst layer 22, an ozone generator 3, an exhaust gas concentration meter 4, a dissolved air pump 5, and a water outlet 6.
Referring to fig. 2, a schematic diagram of control connection of an ozone generator-based wastewater treatment system according to an embodiment of the present invention is shown, wherein a water inlet 1 is used for discharging wastewater to be treated, and an ion meter 11 is disposed in the water inlet 1 for detecting a first target substance concentration in the wastewater to be treated passing through the water inlet 1;
the reaction tank 2 is connected with the water inlet 1 and is used for storing wastewater to be treated discharged from the water inlet 1, a sprayer 21 is arranged at the top of the reaction tank 2, a catalyst layer 22 is arranged at the lower part of the sprayer 21, and the catalyst layer 22 is used for catalyzing ozone in the wastewater to be treated sprayed by the sprayer 21;
an ozone generator 3 connected with the reaction tank 2 for generating ozone and introducing ozone into the reaction tank 2, wherein the real-time ozone generation amount of the ozone generator 3 can be adjusted;
the wastewater determinator is arranged at the bottom of the reaction tank 2 and is used for detecting the real-time ozone concentration, the real-time concentration of the first target substance and the real-time concentration of the second target substance of the wastewater to be treated in the reaction tank 2;
the tail gas concentration meter 4 is arranged at the top end of the interior of the reaction tank 2 and is used for detecting the real-time ozone concentration in the air in the reaction tank 2;
The dissolved air pump 5 is arranged on one side of the reaction tank 2 and is connected with the ozone generator 3, the dissolved air pump 5 is used for extracting wastewater to be treated at the bottom of the reaction tank 2 and conveying the wastewater to the sprayer 21 for spraying, and the dissolved air pump 5 can also be used for filling ozone generated by the ozone generator 3 into the extracted wastewater to be treated;
a water outlet 6 for discharging the treated wastewater;
the water purification controller is respectively connected with the water inlet 1, the reaction tank 2, the ozone generator 3, the wastewater measuring instrument, the tail gas concentration meter 4, the dissolved air pump 5 and the water outlet 6, and is used for determining whether to start the dissolved air pump 5 for deep catalytic oxidation water purification or whether to adjust the real-time ozone generation amount according to the real-time ozone concentration under a first preset condition, determining whether to start the dissolved air pump 5 according to the current treatment duration of the reaction tank 2 under a second preset condition, and filling ozone generated by the ozone generator 3 into the extracted wastewater to be treated;
the first preset condition is that the real-time removal rate difference of the first target substance is larger than the standard removal rate difference and the real-time removal rate of the first target substance is smaller than the standard removal rate;
The second preset condition is that the real-time removal rate difference of the first target substance is larger than the standard removal rate difference, the real-time removal rate of the first target substance is smaller than the standard removal rate, and the real-time ozone concentration is between the first preset ozone concentration and the second preset ozone concentration.
The method comprises the steps of dividing wastewater treatment into two stages, wherein the first stage is direct oxidation treatment of organic wastewater substances which are easy to degrade, the second stage is catalytic oxidation treatment of organic wastewater substances which are difficult to degrade, and judging whether the real-time ozone generation amount of an ozone generator is regulated and whether a dissolved air pump is started to enter the deep catalytic oxidation purified water of the second stage or not according to the real-time removal rate detected in real time and the calculated real-time removal rate difference by a purified water controller.
Specifically, referring to FIG. 3, which is an overall logic diagram of an ozone generator-based wastewater treatment system according to an embodiment of the present invention, a first target substance standard removal rate difference DeltaVb is provided in the water purification controller, the water purification controller is capable of calculating a first target substance standard removal rate Vb based on a detection result of an ion meter at the water inlet, the water purification controller is further capable of calculating a real-time removal rate Vs based on a first target substance real-time concentration of wastewater to be treated detected by the wastewater meter, the water purification controller calculates a real-time removal rate difference DeltaVs, deltaVs= |Vs-Vb| based on the first target substance standard removal rate Vb and determines a real-time removal rate difference DeltaVs based on the standard removal rate difference DeltaVb,
when DeltaVs is less than or equal to Deltavb, the water purification controller judges that the difference of the real-time removal rates of the first target substances is less than or equal to the standard removal rate difference, and the water purification controller does not adjust the current running state of the wastewater treatment system;
when DeltaVs > DeltaVb, the water purification controller judges that the real-time removal rate difference of the first target substance is larger than the standard removal rate difference, and the water purification controller compares and judges the standard removal rate Vb of the first target substance with the real-time removal rate Vs to determine the wastewater treatment state in the reaction tank.
The ion instrument detects that the concentration of a first target substance in wastewater to be treated is the initial concentration CCCC of the first target substance, and the water purification controller can record the reaction time, wherein Vs= (CCCs-CCCC)/t 1, vs is the real-time removal rate, t1 is the time taken from the initial concentration of the first target substance to the real-time concentration of the first target substance, CCCs is the real-time concentration of the first target substance, and CCCC is the initial concentration of the first target substance.
In this embodiment, the difference in the standard removal rate of the first target substance is affected by factors such as the substance concentration and the throughput of the reaction tank, and should be specifically set in conjunction with practical situations, and in this embodiment, the throughput of the reaction tank is 60 cubic meters, the difference in the standard removal rate of the first target substance is ±20 g/min, and the initial concentration of the first target substance is 0.4 g/l.
The real-time removal rate difference is calculated according to the standard removal rate and the real-time removal rate of the first target substances through the water purification controller, then the time removal rate difference is judged according to the standard removal rate difference of the first target substances, the water purification controller can not adjust the current running state of the wastewater treatment system within the range of the standard removal rate difference, the running state is normal, if the running state exceeds the range of the standard removal rate difference, the wastewater treatment state in the reaction tank is determined through the specific real-time removal rate, and the condition in the reaction tank is guaranteed to be monitored in real time, and the standard removal rate difference is set so that a certain fault tolerance exists in the process of monitoring the reaction state.
Specifically, the water purification controller acquires a first target substance real-time removal rate Vs, and makes a determination based on a first target substance standard removal rate Vb,
when Vs is smaller than Vb, the water purification controller judges that the real-time removal rate of the first target substance is smaller than the standard removal rate, and judges the real-time ozone concentration in the wastewater to be treated so as to determine whether to start the dissolved air pump to carry out deep catalytic oxidation water purification;
when Vs > Vb, the water purification controller judges that the real-time removal rate of the first target substance is larger than the standard removal rate, and the water purification controller controls the tail gas ozone concentration meter to detect the ozone concentration in the tail gas so as to determine whether the water purification controller needs to adjust the real-time ozone generation amount of the ozone generator.
In this embodiment, the first target substance standard removal rate is affected by factors such as the substance concentration and the ozone generation amount, and should be specifically set in conjunction with the actual situation, and in this embodiment, the first target substance standard removal rate is 260 g/min.
The real-time concentration of the first target substance is obtained in real time through the water purification controller, the real-time removal rate of the first target substance is calculated, whether the real-time ozone generation amount of the ozone generator is regulated or whether the deep catalytic oxidation water purification is carried out by starting the dissolved air pump is judged according to the standard removal rate of the first target substance, so that ozone loss caused when other substances cannot be oxidized rapidly after substances which are easy to oxidize are avoided, and the catalytic oxidation of the second target substance can be effectively and directly carried out after the first target substance is oxidized.
Specifically, a first preset ozone concentration C1 and a second preset ozone concentration C2 are arranged in the water purification controller, the real-time ozone concentration Cs in the wastewater to be treated is obtained through the wastewater measuring instrument, when the real-time removal rate of the first target substance is smaller than the standard removal rate, the real-time ozone concentration Cs is judged according to the first preset ozone concentration C1 and the second preset ozone concentration C2,
when Cs is smaller than C1, the water purification controller judges that the real-time ozone concentration is smaller than the first preset ozone concentration, and the water purification controller adjusts the real-time ozone generation amount of the ozone generator to Cs';
when C1 is less than or equal to Cs and less than or equal to C2, the water purification controller judges that the real-time ozone concentration is between a first preset ozone concentration and a second preset ozone concentration, and the water purification controller judges the current treatment duration in the reaction tank to determine whether the water purification controller controls the opening of the dissolved air pump;
when Cs is more than C2, the water purification controller judges that the real-time ozone concentration is more than a second preset ozone concentration, the water purification controller controls the dissolved air pump to be started, and the waste water to be treated at the bottom of the reaction tank is pumped by the dissolved air pump and is conveyed to the sprayer for spraying;
Wherein Cs '=cs× [1+ (Vb-Vs)/Vb ], cs' is the adjusted real-time ozone generation amount of the ozone generator, cs is the real-time ozone generation amount of the ozone generator, vb is the first target substance standard removal rate, and Vs is the first target substance real-time removal rate.
In this embodiment, the preset ozone concentration is affected by the first target substance concentration, the ozone generating amount, and other factors, and should be specifically set in combination with practical situations, in this embodiment, the first preset ozone concentration is 5 g/l, and the second preset ozone concentration is 7 g/l.
When the water purification controller detects that the real-time removal rate of the first target substance is smaller than the standard removal rate, the real-time ozone concentration is obtained, whether the ozone is reduced and needs to be increased at the moment is judged, or whether the direct oxidation in the first stage is finished and the dissolved air pump is required to be started to enter the catalytic oxidation in the second stage is judged, the ozone concentration in the wastewater is monitored in real time, and the accuracy of the ozone input amount and the accuracy of the catalytic oxidation entering the next reaction stage are ensured.
Specifically, the water purification controller is internally provided with a standard treatment duration Tb of a first water purification stage, when the real-time ozone concentration is between a first preset ozone concentration and a second preset ozone concentration, the water purification controller obtains the current treatment duration Ts of the reaction tank,
When Ts is smaller than Tb, the water purification controller judges that the current treatment duration of the reaction tank is smaller than the standard treatment duration of the first water purification stage, and the water purification controller does not adjust the current running state of the wastewater treatment system;
when Ts is more than or equal to Tb, the water purification controller judges that the current treatment time length of the reaction tank is more than or equal to the standard treatment time length of the first water purification stage, the water purification controller controls the dissolved air pump to be started, the waste water to be treated at the bottom of the reaction tank is pumped by the dissolved air pump and is conveyed to the sprayer for spraying, and ozone generated by the ozone generator is filled into the pumped waste water to be treated.
In this embodiment, the standard treatment duration is affected by factors such as the ozone generation amount and the total amount of the first target substance, and the preset time is correspondingly selected, and the initial treatment duration is taken as the standard treatment duration.
When the treatment time length of the reaction tank is longer than or equal to the standard treatment time length of the first water purification stage, the dissolved air pump is started, ozone generated by the ozone generator is filled into the extracted wastewater to be treated, and ozone is added by adopting the dissolved air pump, so that the continuous supplement of the ozone amount is realized, and the ozone amount required in the catalytic oxidation process is ensured.
Referring to fig. 4, which is a logic diagram of catalytic oxidation of the wastewater treatment system based on the ozone generator according to the embodiment of the invention, specifically, the water purification controller is provided with a second target substance standard concentration C2b and a second target substance initial concentration C2C, when the dissolved air pump is turned on, the water purification controller obtains a second target substance real-time concentration C2s in the wastewater to be treated, and determines the second target substance real-time concentration C2s according to the second target substance standard concentration C2b,
when C2s is less than or equal to C2b, the water purification controller judges that the real-time concentration of the second target substance is less than or equal to the standard concentration of the second target substance, the water purification controller discharges the treated wastewater from the water outlet, and the water purification treatment is finished;
when C2s is more than C2b, the water purification controller judges that the real-time concentration of the second target substance is more than the standard concentration of the second target substance, and calculates the real-time catalytic removal rate of the second target substance according to the initial concentration of the second target substance and the real-time concentration of the second target substance so as to determine whether to rotate and adjust the catalyst layer.
The water purification controller can record the reaction time of each stage, when the dissolved air pump is started, the water purification controller obtains that the real-time concentration C2s of the second target substance in the wastewater to be treated is the initial concentration C2C of the second target substance, wherein V2 s= (C2 s-C2C)/t 2, V2s is the real-time catalytic removal rate, t2 is the time taken from the initial concentration of the second target substance to the real-time concentration of the second target substance, C2C is the initial concentration of the second target substance, and C2s is the real-time concentration of the second target substance.
In this embodiment, the standard concentration of the second target substance is affected by factors such as ozone generation amount and wastewater quality, and should be specifically set in combination with practical situations, and the standard concentration of the second target substance in this embodiment is 0.036 g/l.
When the water purification controller is started, namely, a catalytic oxidation stage is carried out, the water purification controller obtains the real-time concentration of a second target substance in the wastewater to be treated, and when the real-time concentration of the second target substance is smaller than or equal to the standard concentration of the second target substance, the catalytic oxidation process is finished at the moment, continuous oxidation is not needed, and the water purification controller discharges the wastewater after the treatment from a water outlet; if the real-time concentration of the second target substance is larger than the standard concentration of the second target substance, the water purifying controller calculates the real-time catalytic removal rate of the second target substance, judges whether the current catalytic removal rate still meets the standard, avoids insufficient catalytic oxidation, ensures that the second target substance cannot be effectively removed, avoids mistakenly filling more ozone, and ensures the accuracy of the ozone input amount.
Specifically, the water purification controller is also provided with a second target substance standard catalytic removal rate V2b, when the real-time concentration of the second target substance is larger than the second target substance standard concentration, the water purification controller calculates the second target substance real-time catalytic removal rate V2s, and judges the second target substance real-time catalytic removal rate V2s according to the second target substance standard catalytic removal rate V2b,
When V2s is smaller than V2b, the water purification controller judges that the real-time catalytic removal rate of the second target substance is smaller than the standard catalytic removal rate of the second target substance, and the water purification controller rotates the catalyst layer by 35-45 degrees;
when V2s is more than or equal to V2b, the water purification controller judges that the real-time catalytic removal rate of the second target substance is more than or equal to the standard catalytic removal rate of the second target substance, and the water purification controller does not adjust the current running state of the wastewater treatment system.
In this embodiment, the standard catalytic removal rate of the second target substance is affected by factors such as ozone generation amount and wastewater quality, and should be specifically set in combination with practical situations, and in this embodiment, the standard catalytic removal rate of the second target substance is 23.6 g/min.
In the catalytic oxidation process, the water purification controller monitors the real-time concentration of the second target substance to judge whether the catalyst layer needs to be adjusted or not, so that the effective catalytic oxidation is ensured, and when the real-time catalytic removal rate of the second target substance is smaller than the standard catalytic removal rate of the second target substance, the catalyst layer is rotationally adjusted, so that the contact area of sprayed wastewater and the catalyst is increased, and the catalytic oxidation efficiency of the wastewater is promoted.
Specifically, a standard reaction time t is set in the water purification controller, when the water inlet discharges waste water to be treated, the ion meter detects the concentration of a first target substance in the waste water to be treated passing through the water inlet in real time, and calculates the total amount of the first target substance in a sectional manner according to the concentration of the first target substance and the volume of the waste water to be treated, and the water purification controller calculates a standard removal rate Vb according to the calculated total amount M of the first target substance and the standard reaction time t (the standard reaction time t is the same as the standard treatment time Tb);
wherein m=cz×qq, vb=m/t, M is the total amount of the first target substance, cz is the first target substance concentration, qq is the volume of wastewater to be treated discharged, t is the standard reaction time period, and Vb is the standard removal rate of the first target substance.
Specifically, the initial ozone generation amount X of the ozone generator is determined according to the total amount M of first target substances, a first preset ozone amount X1, a second preset ozone amount X2, a third preset ozone amount X3, the total amount M1 of first target substances, the total amount M2 of second preset first target substances, a first preset time T1, a second preset time T2 and a third preset time T3 are arranged in the water purifying controller, when the water inlet discharges wastewater to be treated, the water purifying controller compares the total amount M of first target substances with the total amount M1 of first preset first target substances and the total amount M2 of second preset first target substances,
When M is less than or equal to M1, selecting a first preset ozone amount X1 as an initial ozone generation amount X in the water purification controller, and selecting a first preset time T1 as an initial treatment duration T;
when M1 is more than M and less than or equal to M2, selecting a second preset ozone amount X2 as an initial ozone generation amount X in the water purification controller, and selecting a second preset time T2 as an initial treatment duration T;
when M is more than M2, the water purifying controller selects a third preset ozone amount X3 as an initial ozone generation amount X, and selects a third preset time T3 as an initial treatment duration T.
In this embodiment, the preset ozone amount is affected by the quality of the wastewater, the wastewater treatment time, and other factors, and should be specifically set according to the actual situation, where in this embodiment, the first preset ozone amount is 5.5 kg/min, the second preset ozone amount is 6 kg/min, and the third preset ozone amount is 8 kg/min; the total amount of the first preset first target substances is 15 kg, and the total amount of the second preset first target substances is 23 kg; the first preset time is 50 minutes, the second preset time is 70 minutes, and the third preset time is 80 minutes.
The initial ozone generation amount and the treatment time length of the ozone generator are determined according to the total amount M of the first target substances, so that different qualities correspond to corresponding ozone generation amounts and treatment time lengths, more ozone generation amounts and longer treatment time lengths are corresponding to larger qualities, sufficient ozone and reaction time are ensured when the substances are oxidized, and the accuracy of the ozone and time is ensured when the substances are oxidized.
Specifically, the water purification controller is internally provided with a tail gas standard ozone concentration CCd, when the real-time removal rate of the first target substance is larger than the standard removal rate, the water purification controller obtains the real-time ozone concentration CCs of the tail gas through the tail gas concentration meter, judges the real-time ozone concentration CCs of the tail gas according to the standard ozone concentration CCd of the tail gas,
when CCs is less than or equal to CCd, the water purification controller judges that the real-time ozone concentration of the tail gas is less than or equal to the standard ozone concentration of the tail gas, and the water purification controller does not adjust the current running state of the wastewater treatment system;
when CCs is larger than CCd, the water purification controller judges that the real-time ozone concentration of the tail gas is larger than the standard ozone concentration of the tail gas, and the water purification controller reduces the real-time ozone generation amount of the ozone generator;
wherein CCs '=ccs× [1- (CCs-CCd)/CCd ], CCs' is the real-time ozone generation amount of the reduced ozone generator, CCs is the real-time ozone generation amount of the ozone generator when detecting the second target substance, and CCd is the standard ozone concentration of the tail gas.
In this embodiment, the set standard ozone concentration of the tail gas is the standard concentration in the air inside the reaction tank, and is generally set to 0.15 to 0.25 kg/cu m, and the corresponding ozone purification device or ozone recovery device needs to be set at the exhaust position of the reaction tank, where the set standard ozone concentration of the tail gas can be set correspondingly according to the operation efficiency of the ozone purification device or ozone recovery device, and if the corresponding ozone purification device or ozone recovery device is not set at the exhaust position of the reaction tank, the standard ozone concentration of the tail gas should be accurately controlled to be not more than 0.15 mg/cu m.
Through being equipped with ozone concentration meter at the reaction tank top, residual ozone volume in the control tail gas reduces the material consumption and has also avoided harmful gas's emission, is greater than tail gas standard ozone concentration at tail gas real-time ozone concentration, and the real-time ozone volume of taking place of ozone generator is reduced to the water purification controller, has ensured can not discharge more harmful gas, has also avoided the waste of ozone, has improved the accuracy of throwing in ozone.
Specifically, referring to fig. 5, a side view of a catalyst layer according to an embodiment of the present invention is shown, wherein two ends of the catalyst layer are connected to a side wall of a reaction tank through rotating shafts, the catalyst layer can rotate in the reaction tank along the two rotating shafts, and the contact area between the waste water sprayed by a sprayer and the catalyst is controlled by rotating a certain angle, so that the phenomenon of incomplete fusion of the sprayed waste water and the catalyst is avoided, and the catalyst can more effectively act on the purified waste water.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An ozone generator-based wastewater treatment system, characterized by comprising,
the ion meter is arranged in the water inlet and used for detecting the concentration of a first target substance in the wastewater to be treated, which passes through the water inlet;
the reaction tank is connected with the water inlet and used for storing wastewater to be treated discharged from the water inlet, a sprayer is arranged at the top of the reaction tank, a catalyst layer is arranged at the lower part of the sprayer, and the catalyst layer is used for catalyzing ozone in the wastewater to be treated sprayed by the sprayer;
the ozone generator is connected with the reaction tank and used for generating ozone and introducing the ozone into the reaction tank, and the real-time ozone generation amount of the ozone generator can be adjusted;
the wastewater determinator is arranged at the bottom of the reaction tank and used for detecting the real-time ozone concentration, the real-time first target substance concentration and the real-time second target substance concentration of the wastewater to be treated in the reaction tank;
The tail gas concentration meter is arranged at the top end of the interior of the reaction tank and is used for detecting the real-time ozone concentration in the air in the reaction tank;
the dissolved air pump is arranged on one side of the reaction tank and connected with the ozone generator, and is used for extracting wastewater to be treated at the bottom of the reaction tank, conveying the wastewater to the sprayer and spraying the wastewater, and the dissolved air pump can also charge ozone generated by the ozone generator into the extracted wastewater to be treated;
the water purification controller is respectively connected with the water inlet, the reaction tank, the ozone generator, the wastewater measuring instrument, the tail gas concentration meter and the dissolved air pump, and is used for determining whether to start the dissolved air pump to carry out deep catalytic oxidation water purification or whether to adjust the real-time ozone generation amount according to the real-time ozone concentration under a first preset condition, determining whether to start the dissolved air pump according to the current treatment duration of the reaction tank under a second preset condition, and filling ozone generated by the ozone generator into the extracted wastewater to be treated;
the first preset condition is that the real-time removal rate difference of the first target substance is larger than the standard removal rate difference and the real-time removal rate of the first target substance is smaller than the standard removal rate;
The second preset condition is that the real-time removal rate difference of the first target substance is larger than the standard removal rate difference, the real-time removal rate of the first target substance is smaller than the standard removal rate, and the real-time ozone concentration is between the first preset ozone concentration and the second preset ozone concentration;
the method comprises the steps of dividing the treatment of wastewater into two stages, wherein the first stage is the direct oxidation treatment of organic wastewater substances which are easy to degrade, the second stage is the catalytic oxidation treatment of organic wastewater substances which are difficult to degrade, and when the water purification controller detects that the real-time removal rate of a first target substance is smaller than the standard removal rate, the real-time ozone concentration is obtained to judge whether the ozone is reduced and needs to be increased at the moment or whether the direct oxidation of the first stage is ended and the gas dissolving pump is started to enter the catalytic oxidation of the second stage;
the method comprises the steps that the ion instrument detects that the concentration of a first target substance in wastewater to be treated is a first target substance initial concentration CCcc, and the water purification controller can record reaction time, wherein Vs= (CCCs-CCCC)/t 1, vs is a real-time removal rate, t1 is the time taken from the first target substance initial concentration to the first target substance real-time concentration, CCCs is the first target substance real-time concentration, and CCCC is the first target substance initial concentration;
The water purification controller calculates a real-time removal rate difference DeltaVs, deltaVs= |Vs-vb| according to the first target substance standard removal rate Vb and the real-time removal rate Vs, and the first target substance standard removal rate and the standard removal rate difference are set in combination with the actual situation.
2. The ozone generator-based wastewater treatment system according to claim 1, wherein the water purification controller is provided with a first target substance standard removal rate difference, the water purification controller is capable of calculating a first target substance standard removal rate according to a detection result of the ion meter at the water inlet, calculating a real-time removal rate according to a real-time first target substance concentration of wastewater to be treated detected by the wastewater measuring meter, calculating a real-time removal rate difference according to the first target substance standard removal rate and the real-time removal rate,
when the real-time removal rate difference of the first target substances is larger than the standard removal rate difference, the water purification controller compares and judges the standard removal rate of the first target substances with the real-time removal rate so as to determine the wastewater treatment state in the reaction tank;
wherein Δvs= |vs-vb|, Δvs is a real-time removal rate difference, vb is a first target substance standard removal rate, and Vs is a real-time removal rate.
3. The ozone generator based wastewater treatment system of claim 2, wherein the water purification controller obtains a first target material real-time removal rate and determines the real-time removal rate based on a first target material standard removal rate,
when the real-time removal rate of the first target substances is smaller than the standard removal rate, the water purification controller judges the real-time ozone concentration in the wastewater to be treated so as to determine whether to start the dissolved air pump to carry out deep catalytic oxidation water purification;
when the real-time removal rate of the first target substance is greater than the standard removal rate, the water purification controller controls the tail gas ozone concentration meter to detect the ozone concentration in the tail gas so as to determine whether the water purification controller needs to adjust the real-time ozone generation amount of the ozone generator.
4. The ozone generator-based wastewater treatment system according to claim 3, wherein the water purification controller is internally provided with a first preset ozone concentration and a second preset ozone concentration, and the real-time ozone concentration in the wastewater to be treated is obtained by the wastewater measuring instrument, and when the real-time removal rate of the first target substance is smaller than the standard removal rate, the real-time ozone concentration is determined according to the first preset ozone concentration and the second preset ozone concentration,
When the real-time ozone concentration is smaller than the first preset ozone concentration, the water purification controller adjusts the real-time ozone generation amount of the ozone generator to Cs';
when the real-time ozone concentration is between the first preset ozone concentration and the second preset ozone concentration, the water purification controller judges the current treatment duration in the reaction tank to determine whether the water purification controller controls the opening of the dissolved air pump;
when the real-time ozone concentration is larger than a second preset ozone concentration, the water purification controller controls the dissolved air pump to be started, and the waste water to be treated at the bottom of the reaction tank is pumped by the dissolved air pump and is conveyed to the sprayer for spraying;
wherein Cs '=cs× [1+ (Vb-Vs)/Vb ], cs' is the adjusted real-time ozone generation amount of the ozone generator, cs is the real-time ozone generation amount of the ozone generator, vb is the first target substance standard removal rate, and Vs is the first target substance real-time removal rate.
5. The ozone generator based wastewater treatment system of claim 4, wherein the water purification controller is configured with a standard treatment duration of the first water purification stage, wherein the water purification controller is configured to obtain a current treatment duration of the reaction tank when the real-time ozone concentration is between a first preset ozone concentration and a second preset ozone concentration,
When the current treatment time length of the reaction tank is longer than or equal to the standard treatment time length of the first water purification stage, the water purification controller controls the dissolved air pump to be started, the waste water to be treated at the bottom of the reaction tank is pumped by the dissolved air pump and is conveyed to the sprayer for spraying, and ozone generated by the ozone generator is filled into the pumped waste water to be treated.
6. The ozone generator-based wastewater treatment system according to claim 5, wherein the water purification controller is provided with a second target substance standard concentration and a second target substance initial concentration, and when the dissolved air pump is turned on, the water purification controller obtains a second target substance real-time concentration in the wastewater to be treated and determines the second target substance real-time concentration based on the second target substance standard concentration,
when the real-time concentration of the second target substance is less than or equal to the standard concentration of the second target substance, the water purifying controller discharges the treated wastewater from the water outlet, and the water purifying treatment is finished;
when the real-time concentration of the second target substance is larger than the standard concentration of the second target substance, the water purification controller calculates the real-time catalytic removal rate of the second target substance according to the initial concentration of the second target substance and the real-time concentration of the second target substance so as to determine whether to rotationally adjust the catalyst layer;
When the water purification controller starts the dissolved air pump, the water purification controller obtains that the real-time concentration C2s of the second target substance in the wastewater to be treated is the initial concentration C2C of the second target substance, wherein V2 s= (C2 s-C2C)/t 2, V2s is the real-time catalytic removal rate, t2 is the time taken from the initial concentration of the second target substance to the real-time concentration of the second target substance, C2C is the initial concentration of the second target substance, and C2s is the real-time concentration of the second target substance.
7. The ozone generator based wastewater treatment system of claim 6, wherein the water purification controller is further provided with a second target substance standard catalytic removal rate, wherein the water purification controller calculates the second target substance real-time catalytic removal rate when the second target substance real-time concentration is greater than the second target substance standard concentration, and determines the second target substance real-time catalytic removal rate based on the second target substance standard catalytic removal rate,
when the real-time catalytic removal rate of the second target substance is smaller than the standard catalytic removal rate of the second target substance, the water purification controller rotates the catalyst layer by 35-45 degrees;
wherein, the standard catalytic removal rate of the second target substance is set in combination with the actual situation.
8. The wastewater treatment system based on an ozone generator according to claim 2, wherein a standard reaction time is set in the water purification controller, when the water inlet discharges wastewater to be treated, the ion meter detects the concentration of a first target substance in the wastewater to be treated passing through the water inlet in real time, and calculates the total amount of the first target substance in a sectional manner according to the concentration of the first target substance and the volume of the wastewater to be treated, and the water purification controller calculates a standard removal rate according to the calculated total amount of the first target substance and the standard reaction time;
wherein m=cz×qq, vb=m/t, M is the total amount of the first target substance, cz is the first target substance concentration, qq is the volume of wastewater to be treated discharged, t is the standard reaction time period, and Vb is the standard removal rate of the first target substance.
9. The ozone generator-based wastewater treatment system according to claim 8, wherein the initial ozone generation amount X of the ozone generator is determined according to the total amount M of the first target substances, a first preset ozone amount X1, a second preset ozone amount X2, a third preset ozone amount X3, a first preset total amount M1 of the first target substances, a second preset total amount M2 of the first target substances, a first preset time T1, a second preset time T2, and a third preset time T3 are provided in the water purification controller, the water purification controller compares the total amount M of the first target substances with the total amount M1 of the first preset first target substances, the total amount M2 of the second preset first target substances when the water inlet discharges the wastewater to be treated,
When M is less than or equal to M1, selecting a first preset ozone amount X1 as an initial ozone generation amount X in the water purification controller, and selecting a first preset time T1 as an initial treatment duration T;
when M1 is more than M and less than or equal to M2, selecting a second preset ozone amount X2 as an initial ozone generation amount X in the water purification controller, and selecting a second preset time T2 as an initial treatment duration T;
when M is more than M2, the water purifying controller selects a third preset ozone amount X3 as an initial ozone generation amount X, and selects a third preset time T3 as an initial treatment duration T.
10. The wastewater treatment system based on an ozone generator according to claim 3, wherein the water purification controller is internally provided with a standard ozone concentration of the tail gas, and when the real-time removal rate of the first target substance is greater than the standard removal rate, the water purification controller obtains the real-time ozone concentration of the tail gas through the tail gas concentration meter and judges the real-time ozone concentration of the tail gas according to the standard ozone concentration of the tail gas,
when the real-time ozone concentration of the tail gas is larger than the standard ozone concentration of the tail gas, the water purifying controller reduces the real-time ozone generation amount of the ozone generator;
wherein CCs '=ccs× [1- (CCs-CCd)/CCd ], CCs' is the real-time ozone generation amount of the reduced ozone generator, CCs is the real-time ozone generation amount of the ozone generator when detecting the second target substance, and CCd is the standard ozone concentration of the tail gas.
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