CN204417281U - A kind of sewage disposal is met an urgent need preposition chemical dephosphorization Automatic Dosing control device - Google Patents
A kind of sewage disposal is met an urgent need preposition chemical dephosphorization Automatic Dosing control device Download PDFInfo
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- CN204417281U CN204417281U CN201420683104.2U CN201420683104U CN204417281U CN 204417281 U CN204417281 U CN 204417281U CN 201420683104 U CN201420683104 U CN 201420683104U CN 204417281 U CN204417281 U CN 204417281U
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Abstract
The utility model relates to a kind of sewage disposal and to meet an urgent need preposition chemical dephosphorization Automatic Dosing control device, comprise: total phosphorus on-line computing model, PH meter, under meter, central processing unit, medicament automatic adding device and display unit, wherein, total phosphorus on-line computing model, PH meter and under meter are all connected with central processing unit; The sewage total phosphorus concentration of total phosphorus on-line computing model to preliminary sedimentation tank water outlet place carries out sampling monitoring; PH counts the pH value of on-line monitoring preliminary sedimentation tank water inlet place; Under meter measures flooding velocity.The utility model on the one hand, is controlled by robot control system(RCS), when the preliminary sedimentation tank water outlet total phosphorus concentration that total phosphorus on-line computing model records exceedes certain value, adds dephosphorization chemical agent, achieve the automated operation accurately added of medicament in the water inlet of trend Sewage Plant; On the other hand, by monitoring preliminary sedimentation tank water inlet pH value, remind in time and add PH conditioning agent, avoid because the excessive Dephosphorization reagent that adds causes the pH of sewage too low, and affect the biological respinse of subsequent bio reaction tank.
Description
Technical field
The utility model relates to technical field of sewage, particularly relates to a kind of sewage disposal and to meet an urgent need preposition chemical dephosphorization Automatic Dosing control device.
Background technology
Along with the development of Science & Society, for improving quality of water environment, reduce water body eutrophication degree.China's most area urban wastewater treatment firm water outlet total phosphorus must reach " urban wastewater treatment firm pollutant emission standard " (GB 18918-2002) first level A, namely must be less than 0.5mg/L.Domestic and international existing technology of phosphorus removal from wastewater is biological phosphate-eliminating and chemical dephosphorization two kinds mainly.Compared with chemical treatment method, bioremediation have running cost compared with low, excess sludge production is few, have the advantages such as biological denitrificaion simultaneously, therefore, urban wastewater treatment firm generally adopts Biological Phosphorus Removal Processes.According to practical operating experiences both domestic and external, in biological treatment system, owing to there is carbon source competition, nitrate between biological denitrificaion and biological phosphate-eliminating to contradictory problems such as dephosphorization impacts, if when the water inlet total phosphorus concentration of biological reaction tank exceeds biological treatment most degradation value, only adopt Biological Phosphorus Removal Processes, be difficult to meet effluent quality requirement.For guaranteeing water outlet total phosphorus qualified discharge, urban wastewater treatment firm increases chemical auxiliary dephosphorization system usually on biological denitrification phosphorous removal technique basis, improves total phosphorus removal ability further by adding chemical agent.
Receive the town sewage plant that trade effluent accounting is larger, often its to enter factory's sewage quality fluctuation larger.When total phosphorus concentration of intaking far exceedes biological reaction tank biochemical treatment most degradation value, chemical agent just must be added to ensure water outlet.When employing adds chemical agent in aeration tank, the biological phosphate-eliminating ability of a large amount of chemical dephosphorization medicaments to system causes potential vicious cycle: add → gather phosphorus absorbed dose minimizing → polyP bacteria amount minimizing → biological phosphate-eliminating amount in a large number and reduce → need increasing dosage → polyP bacteria amount minimizing.For avoiding the generation of above-mentioned situation, when Sewage Plant water inlet total phosphorus exceedes certain value, preposition emergent chemical dephosphorization should be adopted, reduce the load of biological reaction tank, ensureing the stable of biological reaction tank.
At present, preposition emergent chemical dephosphorization often adopts Artificial Control to add.The method is by monitoring water inlet TP instrumented data, when TP data exceed certain value, determining chemical added amount of chemical according to stoichiometric relation, then add to Sewage treatment systems by chemical agent by dosing pump, realize chemical process dephosphorization.But in sewage work's actual moving process, the settlement action of preliminary sedimentation tank also can remove part phosphorus containg substances in sewage, if enter factory TP concentration according to sewage, add chemical agent, dosage will be obviously higher, and manually add, and chemical feeding quantity cannot accurately control, the waste of chemical agent should be caused, increase operation cost.If it is too much to add chemical dephosphorization medicament, the sewage PH value that enters in biological reaction tank may be caused too low, affect the biological respinse of biological reaction tank.
Utility model content
Technical problem to be solved in the utility model is the deficiency of preposition chemical dephosphorization robot control system(RCS) of meeting an urgent need for existing urban wastewater treatment firm, there is provided a kind of and can realize the Automatic continuous control that chemical agent adds process, ensure that biological reaction tank water inlet total phosphorus is within allowed band, thus reduce the total phosphorus load of biological reaction tank, ensure the stability of biological reaction tank, and then ensure the key issue of sewage effluents stably reaching standard discharge.
For this purpose, the utility model proposes a kind of sewage disposal and to meet an urgent need preposition chemical dephosphorization Automatic Dosing control device, comprising:
Total phosphorus on-line computing model, PH meter, under meter, central processing unit, medicament automatic adding device and display unit, wherein, described total phosphorus on-line computing model, described PH meter and described under meter are all connected with described central processing unit;
Wherein, the sewage total phosphorus concentration of described total phosphorus on-line computing model to preliminary sedimentation tank water outlet place carries out sampling monitoring; Described PH counts the pH value of on-line monitoring preliminary sedimentation tank water inlet place; Described under meter measures Sewage Plant flooding velocity.
Particularly, described central processing unit adopts programmable controller PLC.
Particularly, described medicament automatic adding device comprises: container for storing liquid, liquor box, liquidometer and volume pump, wherein, described container for storing liquid is connected with described volume pump by pipeline with described liquor box, described container for storing liquid and described liquor box install described liquidometer respectively, and described volume pump, described liquidometer are connected with described central processing unit.
Particularly, described display unit is connected with described central processing unit, real-time monitoring data and display presupposed information.
The utility model discloses a kind of sewage disposal and to meet an urgent need preposition chemical dephosphorization Automatic Dosing control device, and the sewage total phosphorus concentration of total phosphorus on-line computing model to preliminary sedimentation tank water outlet place carries out sampling monitoring; PH counts the pH value of on-line monitoring preliminary sedimentation tank water inlet place; Under meter measures Sewage Plant flooding velocity.And the parameter signal of above-mentioned acquisition is sent to central processing unit.The utility model on the one hand, is controlled by robot control system(RCS), when the preliminary sedimentation tank water outlet total phosphorus concentration that total phosphorus on-line computing model records exceedes certain value, adds dephosphorization chemical agent, achieve the automated operation accurately added of medicament in the water inlet of trend Sewage Plant; On the other hand, by monitoring preliminary sedimentation tank water inlet pH value, remind in time and add PH conditioning agent, avoid because the excessive Dephosphorization reagent that adds causes the pH of sewage too low, and affect the biological respinse of subsequent bio reaction tank.
Accompanying drawing explanation
Can understanding feature and advantage of the present utility model clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the utility model, in the accompanying drawings:
Fig. 1 a kind of sewage disposal shown in the utility model embodiment is met an urgent need the structural representation of preposition chemical dephosphorization Automatic Dosing control device;
In figure: 1, inlet pumping station and grid, 2, settling pit, 3, preliminary sedimentation tank, 4, biological reaction tank, 5, second pond, 6, antisepsis contact tank, 7, under meter, 8, PH meter, 9, total phosphorus on-line computing model, 10, drug volume pump, 11, liquor box, 12, enter medicine volume pump, 13, container for storing liquid, 14, liquid tank level meter, 15, liquor box liquidometer, 16, central processing unit, 17, display unit.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in detail; but illustrate that protection domain of the present utility model is not limited to the concrete scope of the present embodiment simultaneously; based on the embodiment in the utility model; those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model relates to technical field of sewage, and particularly relating to a kind of sewage disposal and to meet an urgent need preposition chemical dephosphorization Automatic Dosing control device, is carry out chemical dephosphorization to town sewage plant sewage.
Shown in accompanying drawing 1 with accompanying drawing 2, embodiment of the present utility model is described in detail.
A kind of sewage disposal is met an urgent need preposition chemical dephosphorization Automatic Dosing control device, comprising: total phosphorus on-line computing model, PH meter, under meter, central processing unit, medicament automatic adding device and display unit.Wherein, total phosphorus on-line computing model, PH meter is all connected with central processing unit with under meter, and central processing unit adopts programmable controller PLC.
Particularly, the sewage total phosphorus concentration of total phosphorus on-line computing model to preliminary sedimentation tank water outlet place carries out sampling monitoring, PH counts the pH value of on-line monitoring preliminary sedimentation tank water inlet place, under meter measures flooding velocity, and the parameter signal of above-mentioned acquisition is sent to central processing unit, central processing unit carries out analyzing and processing in real time to the parameter transmitted, and converts data to electrical signal and export to medicament automatic adding device and display unit.
Further, medicament automatic adding device comprises container for storing liquid, liquor box, liquidometer and volume pump.Wherein, container for storing liquid is connected with volume pump by pipeline with liquor box, and container for storing liquid and liquor box install liquidometer respectively, and volume pump, liquidometer are connected with central processing unit.Particularly; medicament automatic adding device is by receiving the data of central processing unit process; automatically the frequency of adjustment volume pump realizes the dosage controlling medicament in real time in real time; when liquor box liquidometer is lower than protection liquid level, automatically input medicament from container for storing liquid to liquor box, when container for storing liquid is lower than protection liquid level; give the alarm; remind and supplement medicament in container for storing liquid, automatically from the automatic feeding carrying out medicament, adding of agent point is positioned at inlet pumping station water inlet position place.
Further, display unit is connected with central processing unit, and particularly, display unit is by receiving the signal of central processing unit, show all real-time monitoring data and the information of display setting, break down once total phosphorus on-line computing model, PH meter or medicament automatic adding device and just report to the police.
A kind of sewage disposal that the utility model proposes is met an urgent need preposition chemical dephosphorization Automatic Dosing control device, at preliminary sedimentation tank water outlet position sampling analysis total phosphorus concentration.If the sewage traditionally enters factory TP concentration, add chemical agent, dosage will be obviously higher, cause the waste of chemical agent, increase operation cost; And further, on the one hand, controlled by robot control system(RCS), achieve the automated operation accurately added of medicament; On the other hand, by monitoring preliminary sedimentation tank water inlet pH value, remind in time and add PH conditioning agent, avoid because the excessive medicament that adds causes follow-up chemical dephosphorization reaction and the biological respinse of biological reaction tank.
In order to better understand and apply a kind of sewage disposal that the utility model proposes and to meet an urgent need preposition chemical dephosphorization Automatic Dosing control device, carry out the illustrated example that following concrete related work runs, the utility model does not limit to following example.
Particularly, the utility model selects liquor ferri trichloridi as chemical dephosphorization medicament, sample detecting is carried out by the sewage total phosphorus concentration of total phosphorus on-line computing model to preliminary sedimentation tank water outlet place, and using PH to count the pH value of on-line monitoring preliminary sedimentation tank water inlet place, under meter measures flooding velocity simultaneously, wherein, in sewage disposal, chemical auxiliary dephosphorization Automatic Dosing control is: Sewage treatment systems comprises the inlet pumping station and grid that are linked in sequence successively, settling pit, preliminary sedimentation tank, biological reaction tank (A
2o technique), select liquor ferri trichloridi as chemical dephosphorization medicament, carry out sampling monitoring by the sewage total phosphorus concentration of total phosphorus on-line computing model to preliminary sedimentation tank water outlet place, and use PH to count the pH value of on-line monitoring preliminary sedimentation tank water inlet place, under meter measures flooding velocity simultaneously.
Added amount of chemical=β × 162.5/31 × ([TP]-[TP]
0) × Q, wherein: added amount of chemical unit is mg/s; β for adding coefficient, actual when adding suggestion determine by adding test, generally get 1.5; [TP] is the total phosphorus concentration of preliminary sedimentation tank water outlet place, [TP]
0for biological reaction tank water inlet allows total phosphorus concentration, determine according to each factory practical situation, unit mg/L; Q is flooding velocity, unit L/s.
Further, inlet pumping station water inlet position place is located in adding of agent point position, adds, add the reaction times of medicament compared at preliminary sedimentation tank irrigation channel, medicament is mixed more even.Judge whether to add medicament according to the total phosphorus concentration of preliminary sedimentation tank water outlet place, although there is regular hour hysteresis quality, but it is shorter compared to the residence time of biological reaction tank, i.e. general preliminary sedimentation tank residence time 1.5h-2h, the residence time more than the 10h of biological reaction tank, in addition consider the internal reflux of biological reaction tank and the effect of external reflux, its impact can be ignored.If enter factory TP concentration according to sewage, add chemical agent, dosage will be obviously higher, cause the waste of chemical agent, increase operation cost.
In conjunction with as shown in Figure 1, emergent preposition chemical dephosphorization Automatic Dosing control device in sewage disposal of the present utility model, adding of agent point is positioned at inlet pumping station water inlet position place, comprise under meter 7, PH and count 8, total phosphorus on-line computing model 9, drug volume pump 10, liquor box 11, enters medicine volume pump 12, container for storing liquid 13, liquid tank level meter 14, liquor box liquidometer 15, central processing unit 16, display unit 17.Central processing unit 16 adopts programmable controller PLC.Under meter 7, PH counts 8, and total phosphorus on-line computing model 9, drug volume pump 10, enters medicine volume pump 12, liquid tank level meter 14, liquor box liquidometer 15, and display unit 17 is connected with central processing unit.
Further, the layout of urban wastewater treatment firm generally comprises inlet pumping station and grid 1, settling pit 2, preliminary sedimentation tank 3, biological reaction tank 4, second pond 5, antisepsis contact tank 6 from front to back successively.Particularly, sampling monitoring is carried out by the sewage total phosphorus concentration of total phosphorus on-line computing model 9 pairs of preliminary sedimentation tank water outlets place, PH counts the pH value of 8 on-line monitoring preliminary sedimentation tank water inlets place, under meter 7 measures flooding velocity, and by above-mentioned parameter signal transmission to central processing unit, central processing unit carries out analyzing and processing in real time to the parameter transmitted, and convert data to electrical signal and export to medicament automatic adding device and display unit, medicament automatic adding device is by receiving the data of central processing unit process, and the frequency of adjustment volume pump realizes the dosage controlling medicament in real time in real time automatically.When pH value is lower than certain value, give the alarm, remind and manually add PH conditioning agent.The liquid level of container for storing liquid and liquor box monitored respectively by liquid tank level meter 14, liquor box liquidometer 15.When liquor box liquidometer is lower than protection liquid level, automatically input medicament from container for storing liquid to liquor box, when container for storing liquid (pond) is lower than protection liquid level, gives the alarm, remind and manually add medicament.Particularly, due to FeCl
3solution is acid, the pH value of sewage can be reduced when dosage is larger, consider that chemical dephosphorization and follow-up biochemical reaction are to PH requirement, when preliminary sedimentation tank water inlet pH value lower than 7 time, report to the police, remind the PH conditioning agents such as artificial feeding lime water to improve sewage PH value.
Further, program in central processing unit 16, the total phosphorus concentration of preliminary sedimentation tank 2 water outlet that the flooding velocity of monitoring with under meter 7, total phosphorus on-line computing model 9 are monitored, for input variable, with required added amount of chemical for output variable, calculates added amount of chemical as follows:
Added amount of chemical=β × 162.5/31 × ([TP]-[TP]
0) × Q,
Wherein: added amount of chemical unit is mg/s, [TP] is the total phosphorus concentration of preliminary sedimentation tank water outlet place, and Q is flooding velocity, unit L/s.[TP]
0for biological reaction tank water inlet allows total phosphorus concentration, unit mg/L; β, for adding coefficient, generally gets 1.5; The practical situation of these two each factories of parameter are determined.Wherein β suggestion is determined by adding test.
Medicament is iron trichloride, and the reaction of iron(ic) chloride and phosphate from sewage is:
FeCl
3+PO
4 3-→FePO
4↓+3Cl
-，
Chemically react, ferric ion and phosphate ion are the reactions carried out with equimolar ratio, so the dosage of medicament depends on the concentration of total phosphorus, again because the hydroxide ion in sewage and medicament react, and the impact of mixing condition etc. in actual applications, the dosage of iron(ic) chloride need be multiplied by according to its mol ratio and add factor beta.In above-mentioned formula 162.5 is tertiary iron phosphate (FeCl
3) molar mass, 31 is molar masss of phosphorus (P).
Meanwhile, when pH value is lower than certain value, central processing unit 16 gives the alarm, and reminds and manually adds medicament.The liquid level of container for storing liquid and liquor box monitored respectively by liquid tank level meter 14, liquor box liquidometer 15.When liquor box liquidometer is lower than protection liquid level, automatically input medicament from container for storing liquid to liquor box, when container for storing liquid (pond) is lower than protection liquid level, gives the alarm, remind and manually add medicament.
In sum, the utility model discloses a kind of sewage disposal and to meet an urgent need preposition chemical dephosphorization Automatic Dosing control device, wherein, Sewage treatment systems comprises the inlet pumping station and grid that are linked in sequence successively, settling pit, preliminary sedimentation tank, biological reaction tank (A
2o technique), second pond, filter tank, antisepsis contact tank, by using the total phosphorus concentration of total phosphorus on-line computing model monitoring primary settling tank of sewage plant water outlet place, PH counts the pH value of on-line monitoring preliminary sedimentation tank water inlet place, the flooding velocity of use traffic meter monitoring simultaneously; According to total phosphorus concentration and the flooding velocity determination medicament chemical feeding quantity of preliminary sedimentation tank water outlet place; By the monitoring that PH counts, remind and manually add PH conditioning agent, ensure the effect of chemical dephosphorization and subsequent bio reaction, make the chemical feeding quantity determined more economically, rationally, biological phosphate-eliminating load is reduced by preposition chemical dephosphorization, improve the stability of biological reaction tank, ensure that sewage disposal plant effluent total phosphorus is up to standard, stable effluent quality.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its objective is to allow and is familiar with these those skilled in the art and can understands content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalents done by the utility model spirit or modification, all should be encompassed within protection domain of the present utility model.
Although describe embodiment of the present utility model by reference to the accompanying drawings, but those skilled in the art can make various modifications and variations when not departing from spirit and scope of the present utility model, such amendment and modification all fall into by within claims limited range.
Claims (4)
1. a sewage disposal is met an urgent need preposition chemical dephosphorization Automatic Dosing control device, it is characterized in that, comprise: total phosphorus on-line computing model, PH meter, under meter, central processing unit, medicament automatic adding device and display unit, wherein, described total phosphorus on-line computing model, described PH meter and described under meter are all connected with described central processing unit;
Wherein, the sewage total phosphorus concentration of described total phosphorus on-line computing model to preliminary sedimentation tank water outlet place carries out sampling monitoring; Described PH counts the pH value of on-line monitoring preliminary sedimentation tank water inlet place; Described under meter measures Sewage Plant flooding velocity.
2. device as claimed in claim 1, is characterized in that, described central processing unit adopts programmable controller PLC.
3. device as claimed in claim 1, it is characterized in that, described medicament automatic adding device comprises: container for storing liquid, liquor box, liquidometer and volume pump, wherein, described container for storing liquid is connected with described volume pump by pipeline with described liquor box, described container for storing liquid and described liquor box install described liquidometer respectively, and described volume pump, described liquidometer are connected with described central processing unit.
4. device as claimed in claim 1, it is characterized in that, described display unit is connected with described central processing unit, real-time monitoring data and display presupposed information.
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|---|---|---|---|
| CN201420683104.2U CN204417281U (en) | 2014-11-14 | 2014-11-14 | A kind of sewage disposal is met an urgent need preposition chemical dephosphorization Automatic Dosing control device |
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|---|---|---|---|
| CN201420683104.2U CN204417281U (en) | 2014-11-14 | 2014-11-14 | A kind of sewage disposal is met an urgent need preposition chemical dephosphorization Automatic Dosing control device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905842A (en) * | 2018-06-25 | 2018-11-30 | 山东大学 | Rhodamine B fluorescent tracer, which automatically configures, launches control device and operating method |
| CN108946901A (en) * | 2018-08-31 | 2018-12-07 | 浦华控股有限公司 | The automatic regulating system of Dephosphorization reagent dosage in a kind of sewage treatment |
| CN113896374A (en) * | 2021-09-22 | 2022-01-07 | 河海大学 | Underground pipeline sewage leakage dynamic monitoring and in-situ treatment system and operation method |
-
2014
- 2014-11-14 CN CN201420683104.2U patent/CN204417281U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905842A (en) * | 2018-06-25 | 2018-11-30 | 山东大学 | Rhodamine B fluorescent tracer, which automatically configures, launches control device and operating method |
| CN108905842B (en) * | 2018-06-25 | 2021-08-27 | 山东大学 | Rhodamine B fluorescent tracer full-automatic configuration and feeding control device and operation method |
| CN108946901A (en) * | 2018-08-31 | 2018-12-07 | 浦华控股有限公司 | The automatic regulating system of Dephosphorization reagent dosage in a kind of sewage treatment |
| CN113896374A (en) * | 2021-09-22 | 2022-01-07 | 河海大学 | Underground pipeline sewage leakage dynamic monitoring and in-situ treatment system and operation method |
| CN113896374B (en) * | 2021-09-22 | 2022-09-02 | 河海大学 | Underground pipeline sewage leakage dynamic monitoring and in-situ treatment system and operation method |
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Granted publication date: 20150624 Termination date: 20211114 |