CN108658287A - A kind of Sewage advanced treatment control system and control method - Google Patents
A kind of Sewage advanced treatment control system and control method Download PDFInfo
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- CN108658287A CN108658287A CN201810380860.0A CN201810380860A CN108658287A CN 108658287 A CN108658287 A CN 108658287A CN 201810380860 A CN201810380860 A CN 201810380860A CN 108658287 A CN108658287 A CN 108658287A
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- ntu
- sewage
- coagulant
- nephelometer
- control valve
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
The present invention provides a kind of Sewage advanced treatment control system and control methods, including pipe-line mixer, coagulant drug-adding device, sewage pump, the second nephelometer, the first nephelometer and PLC control centres；The coagulant drug-adding device passes sequentially through dosing pump, the second electric control valve, the second electromagnetic flowmeter and is connect with pipe-line mixer；The sewage pump passes sequentially through the first electric control valve, the first electromagnetic flowmeter, the first nephelometer and is connect with pipe-line mixer；The pipe-line mixer outlet is connected to clear water reserviors, and the second nephelometer is installed on the clear water reserviors；The PLC control centres connect with sewage pump, the second nephelometer, the first nephelometer, dosing pump, the second electric control valve, the second electromagnetic flowmeter, the first electric control valve, the first electromagnetic flowmeter.Increasingly automated dispensing may be implemented in the present invention, reduces the excessive dispensing of drug, can effectively improve sewage treating efficiency to reduce cost.
Description
Technical field
The present invention relates to surface water or micro-polluted water treatment field, more particularly to a kind of Sewage advanced treatment control system and
Control method.
Background technology
China is one with water big country, and with the completion of the engineerings such as the south water to north, capital construction is complete for mating aqueduct
At.Except each scale urban construction Large Water Works, remaining each county also builds middle-size and small-size earth's surface water factory.The earth surface water source in China substantially divides
For two kinds of situations.One is lake, reservoir and pond water sources.Turbidity is relatively low but algae substances are more, in addition because of the stream of its water
Dynamic property is smaller, is easily contaminated, and micro- pollutional condition is often presented in water quality.Another water source is rivers and feed ditch water, muddiness
Degree is higher, and impurities in water is mainly silt particle clay.With the development of water technology, integrated form integrated water treatment equipment is met the tendency of
And give birth to, it acts as under the premise of the treatment process technology of original maturation and guarantee effluent quality, each processing unit is carried out
It combines and optimizes, formation is technologically advanced, operates steadily, the integrated form integration product of economical rationality.
The research in terms of Sewage advanced treatment mainly has at present：Notification number CN201962150 Chinese patents disclose
" a kind of integrated water treatment plant " combines mechanical mixture, stirring flocculation, high density precipitation, the suction of V-type filtering ponds, depth
Annex V technique unit, device structure is compact, small, can industrialized production, but rely solely on historical experience and determine dosing
Amount can have the shortcomings that will go out water management within the scope of an extremely low turbidity.Notification number CN106865803 Chinese patents
A kind of " water cleaning systems and its control method ", including control unit and filter device are disclosed, two branch of control unit pair is passed through
The rate of recovery for control changeable water cleaning systems realizes high-precision clean water treatment, still to adapt to different quality requirement
More complicated, required instrument that there are control units and instrument are various so that the higher disadvantage of whole system cost.
In existing water purifying processing system, since existing water system can only generally be fetched water nearby, so in many situations
Lower source quality variation is complicated, results in the load and difficulty of water process.Simple water cleaning systems are difficult to meet demand, and advanced
Water purifying processing system then there is the shortcomings of complicated, of high cost, it is difficult to large-scale promotion.
Invention content
In response to the deficiencies in the existing technology, the present invention provides a kind of Sewage advanced treatment control system and controlling parties
Increasingly automated dispensing may be implemented in method, reduces the excessive dispensing of drug.PLC control system collection in entire sewage disposal process
Signal processing, process control and fault diagnosis, can effectively improve sewage treating efficiency to reduce cost.
The present invention achieves the above technical objects by the following technical means.
A kind of Sewage advanced treatment control system, including it is pipe-line mixer, coagulant drug-adding device, sewage pump, second turbid
Degree meter, the first nephelometer and PLC control centres；The coagulant drug-adding device pass sequentially through dosing pump, the second electric control valve,
Second electromagnetic flowmeter is connect with pipe-line mixer；The sewage pump passes sequentially through the first electric control valve, the first Electromagnetic Flow
Meter, the first nephelometer are connect with pipe-line mixer；The pipe-line mixer outlet is connected to clear water reserviors, is installed on the clear water reserviors
Second nephelometer；The PLC control centres and sewage pump, the second nephelometer, the first nephelometer, dosing pump, the second motorized adjustment
Valve, the second electromagnetic flowmeter, the first electric control valve, the connection of the first electromagnetic flowmeter.
Further, further include full automatic water purifier and sterilizing equipment decontaminating apparatus, between the pipe-line mixer outlet and clear water reserviors according to
Secondary installation full automatic water purifier and sterilizing equipment decontaminating apparatus.
Further, further include permanent position water tank, perseverance position water tank is between coagulant drug-adding device and dosing pump.
Further, the coagulant in the coagulant drug-adding device is aluminium chloride.
A kind of Sewage advanced treatment control method, includes the following steps：
Coagulant dosing flow determines：The turbidity of sewage NTU input PLC control centres that will be detected, in the PLC controls
Scheming calculates coagulant dosing flow, and specific formula is as follows：
η=1.95 × 10-11NTU4-6.533×10-8NTU3+6.632×10-5NTU2+ 0.005NTU+6.937,
Wherein：M-dosage, kg；
V-makes up a prescription volume, m3；
C-coagulant solubility；
Q-coagulant dosing flow, L/h；
Q-sewage load, m3；
η-coagulant charging quantity, mg/L；
NTU-turbidity of sewage；
Initial coagulant dosing flow determines：The PLC control centres start sewage pump, are examined by first nephelometer
The turbidity of sewage NTU measured1, initial coagulant dosing flow q is calculated in PLC control centres1；PLC control centres will initially mix
Solidifying agent dosing flow q1It tables look-up and obtains the aperture K of the second electric control valve1, it is ensured that beginning coagulant dosing flow is q1Into pipeline
Mixer；
Control 7 valve opening of the second electric control valve：The PLC control centres 14 detect according to the second nephelometer 13
Turbidity of sewage NTU2The aperture K of the second electric control valve of real-time feedback control 72。
Further, the second electric control valve valve opening of the control is specially：Second nephelometer detects clear water
Turbidity of sewage NTU in pond2, the NTU of preset standard in PLC control centress, work as NTU2>NTUsWhen, PLC control centres root
According to NTU2And NTUsCalculate separately out q2And qs, q is obtained respectively by tabling look-up2And qsWhen the second electric control valve aperture K2With
Ks, by PLC control centres by the aperture K of the second electric control valve1It is adjusted to K2；Work as NTU2≤NTUsWhen, it is electronic to close second
Regulating valve.
A kind of design method of Sewage advanced treatment dosage of PAC, it is known that the turbidity of sewage of waste water is NTU, by following
Formula calculates coagulant charging quantity η：
η=1.95 × 10-11NTU4-6.533×10-8NTU3+6.632×10-5NTU2+0.005NTU+6.937
Wherein：
η-coagulant charging quantity, mg/L；
NTU-turbidity of sewage.
The beneficial effects of the present invention are：
1. Sewage advanced treatment control system of the present invention and control method can be set as the core of water treatment plant
It is standby, it primarily can be used for the processing of algae-containing water, low-cloudy water and micro- contaminated industry sewage, wherein delivery turbidity can reach NTU and be
0.5.Valve is accurately controlled in sewage disposal process, so that control system is swift in response and steadily, error is smaller and output is stablized.
2. Sewage advanced treatment control system of the present invention and control method, the integrated design of use, by dosing
Program is pre-set in the closed-loop control system based on PLC, realizes increasingly automated dispensing, reduces the excessive dispensing of drug.
PLC control system integrates signal processing, process control and fault diagnosis in entire sewage disposal process, can effectively improve
Sewage treating efficiency is to reduce cost.
Description of the drawings
Fig. 1 is Sewage advanced treatment control system flow chart of the present invention.
Fig. 2 is Sewage advanced treatment control principle drawing of the present invention.
In figure：
1- sewage pumps；The first electric control valves of 2-；The first electromagnetic flowmeters of 3-；4- coagulant drug-adding devices；5- perseverances position water
Case；6- dosing pumps；The second electric control valves of 7-；The second electromagnetic flowmeters of 8-；9- pipe-line mixers；10- full automatic water purifiers；
11- sterilizing equipment decontaminating apparatus；12- clear water reserviors；The second nephelometers of 13-；14-PLC control centres；The first nephelometers of 15-.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
It is without being limited thereto.
As shown in Figure 1, Sewage advanced treatment control system of the present invention, including pipe-line mixer 9, coagulant dosing
Device 4, sewage pump 1, the second nephelometer 13, the first nephelometer 15 and PLC control centres 14；The coagulant drug-adding device 4 according to
It is secondary to be connect with pipe-line mixer 9 by dosing pump 6, the second electric control valve 7, the second electromagnetic flowmeter 8；The sewage pump 1 according to
It is secondary to be connect with pipe-line mixer 9 by the first electric control valve 2, the first electromagnetic flowmeter 3, the first nephelometer 15；The pipeline
The outlet of mixer 9 is connected to clear water reserviors 12, and the second nephelometer 13 is installed on the clear water reserviors 12；The PLC control centres 14 with
Sewage pump 1, the second nephelometer 13, the first nephelometer 15, dosing pump 6, the second electric control valve 7, the second electromagnetic flowmeter 8,
One electric control valve 2, the connection of the first electromagnetic flowmeter 3.The pipe-line mixer 9 is exported and is installed successively between clear water reserviors 12 entirely
Automatic water-purifying device 10 and sterilizing equipment decontaminating apparatus 11.
Drug is added using gravity, needs the permanent position water tank 5 of setting one to ensure that drug flow is constant, medicament is from solution pool
It is added in pipe-line mixer 9 by dosing pump 6 into permanent position water tank 5.
As shown in Fig. 2, a kind of Sewage advanced treatment control method, includes the following steps：
Initial coagulant dosing flow determines：The PLC control centres 14 start sewage pump 1, and it is electronic to open simultaneously first
Regulating valve 2 reflects the discharge of sewage from the first electromagnetic flowmeter 3 to PLC control system, is detected by first nephelometer 15
Turbidity of sewage NTU1, initial coagulant dosing flow q is calculated in PLC control centres 141；The PLC control centres 14 calculate
Go out coagulant dosing flow, specific formula is as follows：
η=1.95 × 10-11NTU4-6.533×10-8NTU3+6.632×10-5NTU2+ 0.005NTU+6.937,
Wherein：M-dosage, kg；
V-makes up a prescription volume, m3；
C-coagulant solubility；
Q-coagulant dosing flow, L/h；
Q-sewage load, m3；
η-coagulant charging quantity, mg/L；
NTU-turbidity of sewage；
PLC control centres 14 are by initial coagulant dosing flow q1It tables look-up and obtains the aperture K of the second electric control valve 71, really
Guarantor's beginning coagulant dosing flow is q1Into pipe-line mixer 9；At this point, PLC control system 14 starts dosing pump 6, open simultaneously
Second electric control valve 7 reflects drug flux from the second electromagnetic flowmeter to PLC control system；
Sewage and coagulant drug flow into full automatic water purifier 10, hybrid medicine after being sufficiently mixed in pipe-line mixer 9
It is fully precipitated in full automatic water purifier 10, by full automatic water purifier 10 filtering emission to clear water reserviors 12；Described second is turbid
The turbidity of sewage NTU that degree meter 13 detects2。
Control 7 valve opening of the second electric control valve：Second nephelometer 13 detects that the sewage in clear water reserviors 12 is turbid
Spend NTU2, the NTU of preset standard in PLC control centres 14s, work as NTU2>NTUsWhen, the PLC control centres 14 are according to NTU2With
NTUsCalculate separately out q2And qs, q is obtained respectively by tabling look-up2And qsWhen the second electric control valve 7 aperture K2And Ks, pass through
PLC control centres 14 are by the aperture K of the second electric control valve 71It is adjusted to K2；Work as NTU2≤NTUsWhen, close the second motorized adjustment
Valve 7.The NTU of preset standard in PLC control centres 14sIt is 0.5.The PLC control centres 14 can be according to the second nephelometer 13
The turbidity of sewage NTU detected2The aperture of the second electric control valve of real-time feedback control 7.
PLC control centres 14 include：CPU module, main function be to dosage carry out constantly calculate refresh output quantity and
Storage；Input module, main function are input turbidity of sewage, the discharge of sewage, drug flux these signals；Output module, mainly
Effect is the signals such as output control sewage pump, the start and stop of drug pump and valve opening；Programmable device module, main function are direct
Generate the program for calculating dosing flow；Fault diagnosis module, main function are to the operating status of sewage pump, dosing pump and clear
The liquid level in pond etc. carries out breakdown judge and early warning；Power module, main function are to provide 220V AC powers.
A kind of design method of Sewage advanced treatment dosage of PAC, it is known that the turbidity of sewage of waste water is NTU, by following
Formula calculates coagulant charging quantity η：
η=1.95 × 10-11NTU4-6.533×10-8NTU3+6.632×10-5NTU2+0.005NTU+6.937
Wherein：
η-coagulant charging quantity, mg/L；
NTU-turbidity of sewage.
The coagulant is generally aluminium chloride.The formula also is adapted for other of decontamination performance same as aluminium chloride
Coagulant.
The embodiment is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification all belongs to the scope of protection of the present invention.
Claims (8)
1. a kind of Sewage advanced treatment control system, which is characterized in that including pipe-line mixer (9), coagulant drug-adding device
(4), sewage pump (1), the second nephelometer (13), the first nephelometer (15) and PLC control centres (14)；The coagulant dosing dress
It sets (4) and passes sequentially through dosing pump (6), the second electric control valve (7), the second electromagnetic flowmeter (8) and pipe-line mixer (9) even
It connects；The sewage pump (1) pass sequentially through the first electric control valve (2), the first electromagnetic flowmeter (3), the first nephelometer (15) with
Pipe-line mixer (9) connects；Pipe-line mixer (9) outlet is connected to clear water reserviors (12), is installed on the clear water reserviors (12)
Second nephelometer (13)；The PLC control centres (14) and sewage pump (1), the second nephelometer (13), the first nephelometer (15),
Dosing pump (6), the second electric control valve (7), the second electromagnetic flowmeter (8), the first electric control valve (2), the first Electromagnetic Flow
Count (3) connection.
2. Sewage advanced treatment control system according to claim 1, which is characterized in that further include full automatic water purifier
(10) and sterilizing equipment decontaminating apparatus (11) full automatic water purifier, is installed successively between pipe-line mixer (9) outlet and clear water reserviors (12)
(10) and sterilizing equipment decontaminating apparatus (11).
3. Sewage advanced treatment control system according to claim 1, which is characterized in that further include permanent position water tank (5), institute
Permanent position water tank (5) is stated to be located between coagulant drug-adding device (4) and dosing pump (6).
4. Sewage advanced treatment control system according to claim 1, which is characterized in that the coagulant drug-adding device
(4) coagulant in is aluminium chloride.
5. a kind of control method of Sewage advanced treatment control system according to claim 2, which is characterized in that including such as
Lower step：
Coagulant dosing flow determines：The turbidity of sewage NTU input PLC control centres (14) that will be detected, in the PLC controls
The heart (14) calculates coagulant dosing flow, and specific formula is as follows：
η=1.95 × 10-11NTU4-6.533×10-8NTU3+6.632×10-5NTU2+ 0.005NTU+6.937,
Wherein：M-dosage, kg；
V-makes up a prescription volume, m3；
C-coagulant solubility；
Q-coagulant dosing flow, L/h；
Q-sewage load, m3；
η-coagulant charging quantity, mg/L；
NTU-turbidity of sewage；
Initial coagulant dosing flow determines：The PLC control centres (14) start sewage pump (1), pass through first turbidity
The turbidity of sewage NTU that meter (15) detects1, initial coagulant dosing flow q is calculated in PLC control centres (14)1；PLC is controlled
Center (14) is by initial coagulant dosing flow q1It tables look-up and obtains the aperture K of the second electric control valve (7)1, it is ensured that beginning coagulant adds
Medical abortion amount is q1Into pipe-line mixer (9)；
Control the second electric control valve (7) valve opening：The PLC control centres (14) detect according to the second nephelometer (13)
Turbidity of sewage NTU2The aperture K of the second electric control valve of real-time feedback control (7)2。
6. Sewage advanced treatment control method according to claim 5, which is characterized in that the second motorized adjustment of the control
Valve (7) valve opening is specially：Second nephelometer (13) detects the turbidity of sewage NTU in clear water reserviors (12)2, PLC controls
The NTU of the interior preset standard of center (14) processeds, work as NTU2>NTUsWhen, the PLC control centres (14) are according to NTU2And NTUsRespectively
Calculate q2And qs, q is obtained respectively by tabling look-up2And qsWhen the second electric control valve (7) aperture K2And Ks, controlled by PLC
Center (14) processed is by the aperture K of the second electric control valve (7)1It is adjusted to K2；Work as NTU2≤NTUsWhen, close the second motorized adjustment
Valve (7).
7. Sewage advanced treatment control method according to claim 6, which is characterized in that the NTU of the standards=0.5.
8. a kind of design method of Sewage advanced treatment dosage of PAC according to claim 1, which is characterized in that
Know that the turbidity of sewage of waste water is NTU, coagulant charging quantity η is calculated by following formula：
η=1.95 × 10-11NTU4-6.533×10-8NTU3+6.632×10-5NTU2+0.005NTU+6.937
Wherein：
η-coagulant charging quantity, mg/L；
NTU-turbidity of sewage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810380860.0A CN108658287A (en) | 2018-04-25 | 2018-04-25 | A kind of Sewage advanced treatment control system and control method |
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|---|---|---|---|
| CN201810380860.0A CN108658287A (en) | 2018-04-25 | 2018-04-25 | A kind of Sewage advanced treatment control system and control method |
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| Publication Number | Publication Date |
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| CN108658287A true CN108658287A (en) | 2018-10-16 |
Family
ID=63781031
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| CN201810380860.0A Pending CN108658287A (en) | 2018-04-25 | 2018-04-25 | A kind of Sewage advanced treatment control system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186941A (en) * | 2020-04-09 | 2020-05-22 | 山东格润内泽姆环保科技有限公司 | Mine water underground sewage treatment system based on concentration and chromaticity detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717143A (en) * | 2009-11-24 | 2010-06-02 | 河海大学 | Method for controlling automatic flocculant addition |
| CN202609995U (en) * | 2012-03-05 | 2012-12-19 | 长沙理工大学 | Automatic dosing device for clarification tank coagulant |
| CN103011356A (en) * | 2012-08-15 | 2013-04-03 | 重庆水务集团股份有限公司 | Method for controlling automatic chemical dosing of high-turbidity water system |
| CN103964604A (en) * | 2014-05-04 | 2014-08-06 | 施世英 | Water treatment system |
| CN107399794A (en) * | 2016-12-28 | 2017-11-28 | 宁波市自来水有限公司 | A kind of emergent automatic dosing control system of the water factory for tackling typhoon season heavy showers |
-
2018
- 2018-04-25 CN CN201810380860.0A patent/CN108658287A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717143A (en) * | 2009-11-24 | 2010-06-02 | 河海大学 | Method for controlling automatic flocculant addition |
| CN202609995U (en) * | 2012-03-05 | 2012-12-19 | 长沙理工大学 | Automatic dosing device for clarification tank coagulant |
| CN103011356A (en) * | 2012-08-15 | 2013-04-03 | 重庆水务集团股份有限公司 | Method for controlling automatic chemical dosing of high-turbidity water system |
| CN103964604A (en) * | 2014-05-04 | 2014-08-06 | 施世英 | Water treatment system |
| CN107399794A (en) * | 2016-12-28 | 2017-11-28 | 宁波市自来水有限公司 | A kind of emergent automatic dosing control system of the water factory for tackling typhoon season heavy showers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186941A (en) * | 2020-04-09 | 2020-05-22 | 山东格润内泽姆环保科技有限公司 | Mine water underground sewage treatment system based on concentration and chromaticity detection |
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Application publication date: 20181016 |