CN220520267U - Urban sewage treatment plant sodium hypochlorite adding device taking residual chlorine as control index - Google Patents
Urban sewage treatment plant sodium hypochlorite adding device taking residual chlorine as control index Download PDFInfo
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- CN220520267U CN220520267U CN202321572367.1U CN202321572367U CN220520267U CN 220520267 U CN220520267 U CN 220520267U CN 202321572367 U CN202321572367 U CN 202321572367U CN 220520267 U CN220520267 U CN 220520267U
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- sodium hypochlorite
- residual chlorine
- power pump
- valve
- input end
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- 239000005708 Sodium hypochlorite Substances 0.000 title claims abstract description 58
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 title claims abstract description 58
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000000460 chlorine Substances 0.000 title claims abstract description 49
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract description 49
- 239000010865 sewage Substances 0.000 title claims abstract description 28
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 239000003814 drug Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 230000002550 fecal effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010841 municipal wastewater Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model relates to a sodium hypochlorite adding device for a town sewage treatment plant, which takes residual chlorine as a control index, and comprises a sodium hypochlorite adding box, a first power pump, a residual chlorine online analyzer, a second power pump and a control system; the input end of the second power pump is connected with the outlet of the disinfection tank; the output end of the second power pump is connected with the input end of the residual chlorine online analyzer; the output end of the residual chlorine on-line analyzer is connected with the input end of the control system; the output end of the control system is connected with the input end of the first power pump; the output end of the first power pump is connected with the input end of the sodium hypochlorite dosing tank; the output end of the sodium hypochlorite dosing tank is connected with the inlet of the disinfection tank. The intelligent sodium hypochlorite feeding device is used for a production site, so that intelligent control of sodium hypochlorite feeding is realized, and electric power and labor cost are saved; the utility model reduces carbon emission and energy consumption in the production and use processes of the medicament, thereby promoting the synergistic effect of pollution reduction and carbon reduction.
Description
Technical Field
The utility model belongs to the field of sewage treatment and dosing, and relates to a sodium hypochlorite dosing device for a town sewage treatment plant, which takes residual chlorine as a control index.
Background
The disinfection process is an essential link of the sewage treatment process in urban sewage treatment plants. Among the many disinfection modes, the modes adopted by urban sewage treatment plants in China are mainly four: ultraviolet disinfection, sodium hypochlorite disinfection, chlorine dioxide disinfection and ozone disinfection. Among them, sodium hypochlorite is widely used by urban sewage treatment plants in China because of the advantages of relatively low cost, convenient operation and management and good durability.
The current pollutant emission standard of urban sewage treatment plants (GB 18918-2002) evaluates the disinfection effect based on the number of fecal coliform groups, and the number of fecal coliform groups of the sewage treatment plants executing the first-level A standard is required to be no more than 103/L in each day, and the number of fecal coliform groups of the sewage treatment plants executing the first-level B standard and the second-level standard is required to be no more than 104/L in each day. However, the quality and quantity of the inflow water of the sewage treatment plant often have certain fluctuation, so that the effluent water continuously and stably reaches the standard, and a relatively conservative fixed medicament adding quantity mode is generally adopted in the current water plant, so that sodium hypochlorite is often excessively added.
Three national standard detection methods of the coliform group number of the excrement are respectively a multitube fermentation method, an enzyme substrate method and a filter membrane method, each method can obtain a detection result only by 24-48 hours, and delay exists in the evaluation of the disinfection effect. The sodium hypochlorite adding device of the domestic town sewage treatment plant only comprises an automatic dosing pump and a dosing barrel, and is lack of analysis on residual chlorine.
Disclosure of Invention
In order to solve the problems, the utility model adopts the following technical scheme: the utility model provides an urban sewage treatment plant sodium hypochlorite dosing device with residual chlorine as control index, includes sodium hypochlorite dosing box, first power pump, residual chlorine on-line analyzer, second power pump and control system;
the input end of the second power pump is connected with the outlet of the disinfection tank;
the output end of the second power pump is connected with the input end of the residual chlorine online analyzer;
the output end of the residual chlorine online analyzer is connected with the input end of the control system;
the output end of the control system is connected with the input end of the first power pump;
the output end of the first power pump is connected with the input end of the sodium hypochlorite dosing tank;
the output end of the sodium hypochlorite dosing tank is connected with the inlet of the disinfection tank.
Further: the sodium hypochlorite dosing tank comprises a water tank liquid level meter for detecting the liquid level.
Further: the first power pump (2) adopts a VKV full-automatic intelligent digital integrated dosing machine K20, and the second power pump (4) adopts a three-fish-plate ZBN A;
further: the control system adopts an industrial personal computer-Huwa technology 610L.
Further: the residual chlorine online analyzer adopts WTW CL298.
Further: the input end of the first power pump is provided with a first filter, and the input end of the second power pump is provided with a second filter.
Further: the input end of the first power pump is provided with a first valve, the output end of the first power pump is provided with a second valve, the input end of the second power pump is provided with a third valve, and the output end of the second power pump is provided with a fourth valve.
Further: the first valve, the second valve, the third valve and the fourth valve are all connected with the control system.
Further: the first valve, the second valve, the third valve and the fourth valve are made of PVC materials.
The sodium hypochlorite adding device for the urban sewage treatment plant, which is provided by the utility model, takes the residual chlorine as a control index, realizes the adjustment of the residual chlorine within the range of 0.10-0.50mg/L, more intuitively judges the effluent disinfection effect, and overcomes the limitations of long time, high condition and hysteresis of detecting the fecal coliform group, thereby optimizing the sodium hypochlorite adding amount on the basis of ensuring that the effluent reaches the standard, and has the following advantages:
the intelligent sodium hypochlorite feeding device is used for a production site, so that intelligent control of sodium hypochlorite feeding is realized, and electric power and labor cost are saved;
the utility model reduces the generation of disinfection byproducts and reduces the threat to the ecological environment;
the utility model reduces carbon emission and energy consumption in the production and use processes of the medicament, thereby promoting the synergistic effect of pollution reduction and carbon reduction.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic diagram of a module of a sodium hypochlorite adding device of a municipal wastewater treatment plant, which takes residual chlorine as a control index;
reference numerals: 1-a sodium hypochlorite dosing tank; 2-a first power pump; 3-residual chlorine on-line analyzer; 4-a second power pump; 5-a control system; 6-a tank level gauge; 7-a first filter; 8-a second filter, 9-a first valve; 10-a second valve; 11-a third valve; 12-fourth valve.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other, and the present utility model will be described in detail below with reference to the drawings and the embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.
Fig. 1 is a schematic diagram of a module of a sodium hypochlorite adding device of a municipal wastewater treatment plant, which takes residual chlorine as a control index;
the utility model provides an urban sewage treatment plant sodium hypochlorite dosing device with residual chlorine as control index, includes sodium hypochlorite dosing tank 1, first power pump 2, residual chlorine on-line analyzer 3, second power pump 4 and control system 5;
the input end of the second power pump 4 is connected with the outlet of the disinfection tank;
the output end of the second power pump 4 is connected with the input end of the residual chlorine on-line analyzer 3;
the output end of the residual chlorine online analyzer 3 is connected with the input end of the control system 5;
the output end of the control system 5 is connected with the input end of the first power pump 2;
the output end of the first power pump 2 is connected with the input end of the sodium hypochlorite dosing tank 1;
the output end of the sodium hypochlorite dosing tank 1 is connected with the inlet of the disinfection tank.
The sodium hypochlorite dosing tank 1, the first power pump 2, the residual chlorine on-line analyzer 3, the second power pump 4 and the control system 5 are connected through pipelines;
further: the sodium hypochlorite dosing tank 1 comprises a water tank level gauge 6 for detecting the liquid level.
The first power pump 2 adopts a digital variable frequency metering dosing pump to provide power for dosing of the sodium chlorate dosing tank 1; the first power pump 2 adopts a VKV full-automatic intelligent digital integrated dosing machine K20;
the second power pump 4 is a centrifugal self-priming pump and pumps water in the disinfection tank into the residual chlorine on-line analyzer 3; the second power pump 4 adopts a three-fish board ZBN A;
the control system 5 is provided with an industrial personal computer of a configuration system, and the industrial personal computer of the configuration system adopts an industrial personal computer-Huwa technology 610L; configuration system-configuration king 7.5SP5;
the control system 5 is in communication with the digital variable frequency metering dosing pump 2 and the residual chlorine online analyzer 3, data transmission is carried out, and the data can be displayed in a human-computer interface in real time.
The residual chlorine online analyzer adopts WTW CL298;
a first filter 7 is provided at the input of the first power pump 2 and a second filter 8 is provided at the input of the second power pump 4. The first filter 7 and the second filter 8 are Y-shaped filters;
the input end of the first power pump 2 is provided with a first valve 9, the output end of the first power pump 2 is provided with a second valve 10, the input end of the second power pump 4 is provided with a third valve 11, and the output end of the second power pump 4 is provided with a fourth valve 12.
The first valve 9, the second valve 10, the third valve 11 and the fourth valve 12 are all connected with the control system 5, and the control system 5 controls the opening and closing of the first valve 9, the second valve 10, the third valve 11 and the fourth valve 12;
the first valve 9, the second valve 10, the third valve 11, the fourth valve 12 and all pipelines are made of PVC materials.
The output end of the digital variable frequency metering dosing pump is connected with the upper part of the sodium hypochlorite dosing tank 1An outlet of the sodium hypochlorite dosing tank 1 is connected to an inlet of a disinfection pond of the disinfection room through a pipeline; the water inlet end of the residual chlorine online analyzer 3 passes through a second power pump 4 The water outlet end is connected to the outlet of the disinfection tank through a pipeline; the control system 5 is respectively communicated with the digital variable-frequency metering dosing pump and the residual chlorine on-line analyzer 3 for data transmission, and the data can be displayed in a human-computer interface in real time.
The residual chlorine online analyzer 3 transmits the free residual chlorine data acquired at the outlet of the disinfection tank to the control system 5, inputs data to a PID (proportion-integral-derivative) algorithm therein and obtains a control conclusion, and the control system 5 is connected with the digital variable frequency metering dosing pump in a wireless communication (RS 232, RS485 and the like) mode, so that the dosing flow of the sodium hypochlorite dosing tank 1 is controlled according to the control conclusion.
The implementation principle of the utility model is as follows: the sodium hypochlorite dosing tank 1 doses medicine to the inlet of the disinfection tank through a digital variable frequency metering dosing pump, after a certain residence time, the residual chlorine online analyzer 3 detects instantaneous free residual chlorine data at the outlet of the disinfection tank, the detected value is transmitted to the control system 5, a PID algorithm controller in the control system 5 compares the detected value with a given value r (t), if deviation e (t) is generated, the frequency of the digital variable frequency metering dosing pump is correspondingly controlled, so that the dosing amount of sodium hypochlorite is changed, the deviation e (t) is reduced, and intelligent control of the dosing amount of sodium hypochlorite is realized.
Example 1
The sodium hypochlorite adding device of the embodiment of the utility model is used for realizing intelligent control on adding sodium hypochlorite by taking residual chlorine as a control index, and the device is specifically as follows:
for a town sewage treatment plant performing the first-level A standard, the given value r (t) of free residual chlorine is set to 0.50mg/L. The device is checked to be free, the matched related equipment can normally run, the daily dosing amount of the sodium hypochlorite of the urban sewage treatment plant is 300kg/d, the digital variable frequency metering dosing pump in a certain period of time controls the initial dosing amount of the sodium hypochlorite to be 300kg/d at a certain frequency, after a certain residence time, the residual chlorine online analyzer detects that the instantaneous free residual chlorine data at the water outlet of the disinfection contact tank is 0.65mg/L, the detected value is transmitted to the control system 5, and the PID algorithm controller in the control system 5 compares the detected value to obtain e (t) =0.15 mg/L, so that the frequency of the digital variable frequency metering dosing pump is reduced, the dosing amount of the sodium hypochlorite is further reduced, the deviation is reduced, the intelligent control of the dosing amount of the sodium hypochlorite is realized, and the excessive dosing of the sodium hypochlorite is effectively avoided.
The intelligent control device is used for realizing intelligent control on sodium hypochlorite addition, and saving electric power and labor cost; the generation of disinfection byproducts is reduced, and the threat to the ecological environment is reduced; simultaneously, the carbon emission and the energy consumption in the production and the use processes of the medicament are reduced, and further the pollution and carbon reduction synergy is promoted.
The above embodiment is only a preferred embodiment of the present utility model, but it is not intended to limit the present utility model. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present utility model. Therefore, all the technical schemes obtained by adopting the equivalent substitution or equivalent transformation are within the protection scope of the utility model.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (9)
1. The sodium hypochlorite adding device for the urban sewage treatment plant taking residual chlorine as a control index is characterized by comprising a sodium hypochlorite adding box (1), a first power pump (2), a residual chlorine online analyzer (3), a second power pump (4) and a control system (5);
the input end of the second power pump (4) is connected with the outlet of the disinfection tank;
the output end of the second power pump (4) is connected with the input end of the residual chlorine on-line analyzer (3);
the output end of the residual chlorine on-line analyzer (3) is connected with the input end of the control system (5);
the output end of the control system is connected with the input end of the first power pump (2);
the output end of the first power pump (2) is connected with the input end of the sodium hypochlorite dosing box (1);
the output end of the sodium hypochlorite dosing box (1) is connected with the inlet of the disinfection tank.
2. The town sewage treatment plant sodium hypochlorite feeding device with residual chlorine as a control index of claim 1, wherein: the sodium hypochlorite dosing tank (1) comprises a water tank liquid level meter (6) for detecting the liquid level.
3. The town sewage treatment plant sodium hypochlorite feeding device with residual chlorine as a control index of claim 1, wherein: the first power pump (2) adopts a VKV full-automatic intelligent digital integrated dosing machine K20, and the second power pump (4) adopts a three-fish-plate ZBN A.
4. The town sewage treatment plant sodium hypochlorite feeding device with residual chlorine as a control index of claim 1, wherein: the control system (5) adopts industrial personal computer-Huwa technology 610L.
5. The town sewage treatment plant sodium hypochlorite feeding device with residual chlorine as a control index of claim 1, wherein: the residual chlorine online analyzer (3) adopts WTW CL298.
6. The town sewage treatment plant sodium hypochlorite feeding device with residual chlorine as a control index of claim 1, wherein: the input end of the first power pump (2) is provided with a first filter (7), and the input end of the second power pump (4) is provided with a second filter (8).
7. The town sewage treatment plant sodium hypochlorite feeding device with residual chlorine as a control index of claim 1, wherein: the input end of the first power pump (2) is provided with a first valve (9), the output end of the first power pump (2) is provided with a second valve (10), the input end of the second power pump (4) is provided with a third valve (11), and the output end of the second power pump (4) is provided with a fourth valve (12).
8. The town sewage treatment plant sodium hypochlorite feeding device with residual chlorine as a control index of claim 7, wherein: the first valve (9), the second valve (10), the third valve (11) and the fourth valve (12) are all connected with the control system (5).
9. The town sewage treatment plant sodium hypochlorite feeding device with residual chlorine as a control index of claim 7, wherein: the first valve (9), the second valve (10), the third valve (11) and the fourth valve (12) are made of PVC materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321572367.1U CN220520267U (en) | 2023-06-19 | 2023-06-19 | Urban sewage treatment plant sodium hypochlorite adding device taking residual chlorine as control index |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321572367.1U CN220520267U (en) | 2023-06-19 | 2023-06-19 | Urban sewage treatment plant sodium hypochlorite adding device taking residual chlorine as control index |
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| CN220520267U true CN220520267U (en) | 2024-02-23 |
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| CN202321572367.1U Active CN220520267U (en) | 2023-06-19 | 2023-06-19 | Urban sewage treatment plant sodium hypochlorite adding device taking residual chlorine as control index |
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| Country | Link |
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