CN107540069A - A kind of full-automatic coagulant dosage system - Google Patents
A kind of full-automatic coagulant dosage system Download PDFInfo
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- CN107540069A CN107540069A CN201710990233.4A CN201710990233A CN107540069A CN 107540069 A CN107540069 A CN 107540069A CN 201710990233 A CN201710990233 A CN 201710990233A CN 107540069 A CN107540069 A CN 107540069A
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Abstract
The invention discloses a kind of full-automatic coagulant dosage system, including the feedforward system and the reponse system of delivery port located at water inlet, the water inlet data that PLC control system detects according to feedforward system control measuring pump to launch coagulant in water process point, and the amount of coagulant is launched further according to the water outlet data correction measuring pump of feedback system measures.It is accurate the invention enables coagulant charging quantity, greatly save the cost of water process；Sewage feedback control system monitors effluent quality in real time, and the chemical feeding quantity of coagulant adjusts in real time, and effluent quality is secure safely.Its is simple in construction, and old water factory is applicable without carrying out larger transformation to original sewage treatment process, and operating system is easily understood, management is convenient, the efficiency of water treatment is greatly improved, saves substantial amounts of manpower and materials and financial resources, there is very strong practicality and wide applicability.
Description
Technical field
The present invention relates to a kind of coagulant dosage system, and in particular to a kind of full-automatic coagulant dosage system.
Background technology
With the propulsion of China's industrialization and urbanization, the discharge capacity of municipal sewage is continuously increased, water resource growing tension,
Advanced treatment of wastewater problem is increasingly becoming the focus of people's care.
Economic, efficient advanced treatment of wastewater for improve water environment, improve the quality of life of people have it is particularly significant
Influence.Advanced treatment of wastewater typically has several handling process such as coagulating sedimentation filtering and micro flocculating filter, for reducing turbidity,
Remove secondary effluent pollutant, the wherein proportion shared by total nitrogen and solid suspension is relatively large, and sewage disposal whether
The important indicator of discharge standard can be reached.Coagulation dosing is the core link in sewage disposal, the effect pair of its coagulating sedimentation
There is direct influence in the quality of effluent quality.Its course of reaction is more complicated, and with non-linear, the multi input factor, no
The features such as certainty, ambiguity and time variation.Manual adjustment mode is difficult accurately to hold for the chemical feeding quantity of coagulant, coagulation
Agent adds very few, effluent quality can be caused not reach standard；Coagulant dosage is excessive, not only wastes, will not heighten removal effect,
Excessive sludge can also be produced.
Quite a few sewage treatment plant's coagulant dosing method of China still uses manual adjustment mode, this method at present
It is not obvious enough for the total nitrogen in nowadays sewage, the removal effect of solid suspension.
Therefore a Coagulant Automatic Dosing System is established in the change based on turbidity, total nitrogen and solid suspension, for accelerating
Wastewater treatment in China factory development process is of great practical significance.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of coagulation added in water treatment procedure
The more rationally accurate full-automatic coagulant dosage system of agent dosage.
The present invention adopts the following technical scheme that to achieve the above object：
A kind of full-automatic coagulant dosage system, including feedforward system and the reponse system of delivery port located at water inlet, PLC controls
The water inlet data that system processed detects according to feedforward system control measuring pump to launch coagulant in water process point, further according to reponse system
The water outlet data correction measuring pump of detection launches the amount of coagulant.
Above-mentioned feedforward system includes：Detect the flow instrument of flow of inlet water, the transmissometer of detection influent turbidity, detection water inlet always
Online TP monitors, the online SS detectors of detection water inlet solid suspension content of phosphorus content.
Above-mentioned reponse system includes：Detect the transmissometer of delivery turbidity.
A kind of operating method of above-mentioned full-automatic coagulant dosage system, comprises the following steps：
S1, feedforward system detection water inlet data, including flow of inlet water Q, influent turbidity, water inlet total phosphorus content P, enter water solid suspension
Thing content S；
S2, PLC control system receive water inlet data, and after the parameter that formula is determined according to influent turbidity, coagulant is calculated by formula
Dosage；
S3, PLC control system control measuring pump to launch coagulant in water process point according to coagulant charging quantity；
S4, feedback system measures water outlet data, including delivery turbidity；
S5, PLC control system receive water outlet data, calculate the value of delta of delivery turbidity and turbidity discharge standard 1NTU；
S6, PLC control system adjust formula according to δ,
(1) if, δ ＞ 0, be applicable formula one；
(2) if, ﹣ 0.5≤δ≤0, be applicable formula two；
(3) if, the ＜ δ ＜ ﹣ 0.5 of ﹣ 1, be applicable formula one；
S7, circulation above-mentioned steps S1-S6, meet discharge standard to delivery turbidity.
Further, above-mentioned formula one is：
XMedicament=Q×D×(P/L)m×(S/G)n×k + Q×D×(δ/G)；
Formula two is： XMedicament=Q×D×(P/L)m×(S/G)n×k；
In formula, XMedicamentFor coagulant charging quantity, Q is flow of inlet water（Cube m/hour）, D is flow unit consumption coefficient（Chemical feeding quantity/cube
Rice）, P is water inlet total phosphorus content, and L is the setting value of water outlet total phosphorus content, and m is total phosphorus correction factor, and S is water inlet solid suspension
Content, G are the setting value of water outlet solid suspension content, and n is solid suspension correction factor, and k is correction factor.
Further, the parameter in above-mentioned steps S2 includes：Total phosphorus correction factor m, solid suspension correction factor n, repair
Positive coefficient k, value are respectively：0.9≤m≤1.0；When influent turbidity is 0 ~ 100NTU, 0≤n≤0.2,1≤k≤1.2；Water inlet
During turbidity ＞ 100NTU, 0.2≤n≤0.4,1.2≤k≤1.5.
The present invention is advantageous in that：
A kind of full-automatic coagulant dosage system of the present invention, the indices of sewage are detected according to sewage feedforward system（Enter
Water number evidence）, PLC control system calculates suitable chemical feeding quantity according to testing result.According to the difference of influent turbidity, parameter is 0
Different spans is applicable respectively under two kinds of turbidity of ~ 100NTU and ＞ 100NTU so that the injected volume of the coagulant calculated
It is more accurate.Finally, delivery turbidity is judged by sewage reponse system, whether detection draining water quality meets discharge standard.
Do not meet such as, PLC control system is modified according to actual water drain confrontation parameter and formula, launches more appropriate coagulation
Agent.
Sewage treatment plant is according to a kind of full-automatic coagulant dosage system of the present invention, and first, coagulant chemical feeding quantity can be with
It is well controlled, coagulant charging quantity is accurate, avoids causing coagulant charging quantity excessive or insufficient situation, greatlys save
The cost of water process.In the case where ensuring water quality safety, save coagulant charging quantity and reach 25%.Secondly, effluent quality peace
It is complete secure, sewage feedback control system, effluent quality is monitored in real time, and feed back in time so that system fading margin parameter, adjustment are mixed
The reasonable chemical feeding quantity of solidifying agent.Again, structure of the invention is simple, and old water factory need not carry out big transformation, Automatic Dosing control system
System to original sewage treatment process without carrying out larger change.Finally, operating system of the invention is easily understood, and management is convenient,
The efficiency of water treatment is greatly improved, saves substantial amounts of manpower and materials and financial resources, with very strong practicality and extensively
Applicability.
Brief description of the drawings
Fig. 1 is a kind of structural representation of full-automatic coagulant dosage system of the present invention.
Embodiment
Make specific introduce to the present invention below in conjunction with the drawings and specific embodiments.
A kind of full-automatic coagulant dosage system, including feedforward system and the reponse system of delivery port located at water inlet；
The water inlet data that PLC control system detects according to feedforward system control measuring pump to launch coagulant in water process point, further according to anti-
The water outlet data correction measuring pump of feedback system detection launches the amount of coagulant, and measuring pump connects medicine storehouse.
Feedforward system includes：The flow instrument for detecting flow of inlet water, the transmissometer, the detection water inlet total phosphorus that detect influent turbidity contain
Online TP monitors, the online SS detectors of detection water inlet solid suspension content of amount.
Reponse system includes：Detect the transmissometer of delivery turbidity.
Operating method is：
S1, feedforward system detection water inlet data, including flow of inlet water Q, influent turbidity, water inlet total phosphorus content P, enter water solid suspension
Thing content S；
S2, PLC control system receive water inlet data, and parameters of formula is determined according to influent turbidity（Total phosphorus correction factor m, solid hang
Float correction factor n, correction factor k）Afterwards, coagulant charging quantity is calculated by formula；
0.9≤m≤1.0；
When turbidity is 0 ~ 100NTU, 0≤n≤0.2,1≤k≤1.2；
During turbidity ＞ 100NTU, 0.2≤n≤0.4,1.2≤k≤1.5；
S3, PLC control system control measuring pump to launch coagulant in water process point according to result of calculation；
S4, feedback system measures water outlet data, including delivery turbidity；
S5, PLC control system receive water outlet data, calculate the value of delta of delivery turbidity and turbidity discharge standard 1NTU；
S6, PLC control system adjust formula according to δ,
If 1. during 1 ＜ δ ＜ ﹣ 0.5 of δ ＞ 0 or ﹣, step S2 is applicable formula one：
XMedicament=Q×D×(P/L)m×(S/G)n×k + Q×D×(δ/G)；
If 2. ﹣ 0.5≤δ≤0, step S2 is applicable formula two：
XMedicament=Q×D×(P/L)m×(S/G)n×k；
S7, circulation above-mentioned steps S1-S6, meet discharge standard to delivery turbidity.
Under original state, no draining, acquiescence meets discharge standard, and δ values are 0, and step S2 is applicable formula two.
Embodiment：
Exemplified by ether lakeside sewage treatment plant, the sewage treatment plant carries out upgrading to its original handling process, and use is micro-
Flocculation technique uses aluminium polychloride as sewerage advanced treatment process, coagulant（PAC）.The flow of inlet water of the sewage treatment plant
For 5000m3/h, according to national relevant regulations, according to sewage disposal one-level A standards, TP concentration is 0.5 ㎎/L, SS concentration
For 10 ㎎/L, the chemical feeding quantity of aluminium polychloride is drawn according to formula.
System operation, flowmeter, online TP monitors, online SS detectors, nephelometer detect every water quality index（Water inlet
Data）, numerical value is passed to PLC control system,
First influent turbidity be 50NTU, PLC system according to formula two, coefficient in the case where turbidity is 0 ~ 100NTU, take D=
8.21、m=0.950、n=0.100、k=1.1；
XPAC=Q×8.21×(P/0.5)0.950×(S/10)0.100×1.1
PLC control system calculates chemical feeding quantity and is sent to measuring pump, and coagulant is added to chemical feeding points by measuring pump.
Transmissometer detection delivery turbidity before exit, effluent quality 3NTU, δ 2NTU, then n, k fine settings, δ according to
As 1 ＜ δ ＜ ﹣ 0.5 of δ ＞ 0 or ﹣,
XMedicament=Q×D×(P/L)m×(S/G)n×k + Q×D×(δ/G)；
Draw, XPAC =Q×8.21×(P/0.5)0.950×(S/G)0.113×1.12 + Q×8.21×(2/10)；
After running a period of time, coefficient is constantly adjusted and stablized within limits, and this small range parameter is to be adapted to this
The coagulant of water factory's water quality launches operational factor.
For factory original 5000T sewage disposal coagulant dosage in 175 ㎏ or so, existing coagulant charging quantity be 133kg, is saved
About coagulant 24%.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the invention is not limited in any way for above-described embodiment, all to be obtained by the way of equivalent substitution or equivalent transformation
Technical scheme, all fall within protection scope of the present invention.
Claims (6)
- A kind of 1. full-automatic coagulant dosage system, it is characterised in that including the feedforward system located at water inlet and delivery port Reponse system, the water inlet data that PLC control system detects according to feedforward system control measuring pump to launch coagulant in water process point, The amount of coagulant is launched further according to the water outlet data correction measuring pump of feedback system measures.
- A kind of 2. full-automatic coagulant dosage system according to claim 1, it is characterised in that the feedforward system bag Include：Detect flow of inlet water flow instrument, detect influent turbidity transmissometer, detection water inlet total phosphorus content online TP monitors, The online SS detectors of detection water inlet solid suspension content.
- A kind of 3. full-automatic coagulant dosage system according to claim 1, it is characterised in that the reponse system bag Include：Detect the transmissometer of delivery turbidity.
- 4. according to a kind of operating method of any described full-automatic coagulant dosage systems of claim 1-3, it is characterised in that Comprise the following steps：S1, feedforward system detection water inlet data, including flow of inlet water Q, influent turbidity, water inlet total phosphorus content P, enter water solid suspension Thing content S；S2, PLC control system receive water inlet data, and after the parameter that formula is determined according to influent turbidity, coagulant is calculated by formula Dosage；S3, PLC control system control measuring pump to launch coagulant in water process point according to coagulant charging quantity；S4, feedback system measures water outlet data, including delivery turbidity；S5, PLC control system receive water outlet data, calculate the value of delta of delivery turbidity and turbidity discharge standard 1NTU；S6, PLC control system adjust formula according to δ,（1）If, δ ＞ 0, be applicable formula one；（2）If, ﹣ 0.5≤δ≤0, be applicable formula two；（3）If, the ＜ δ ＜ ﹣ 0.5 of ﹣ 1, be applicable formula one；S7, circulation above-mentioned steps S1-S6, meet discharge standard to delivery turbidity.
- 5. a kind of full-automatic coagulant dosage system according to claim 4, it is characterised in that the formula one is：XMedicament =Q×D×(P/L)m×(S/G)n×k + Q×D×(δ/G)；Formula two is： XMedicament=Q×D×(P/L)m×(S/G)n×k；In formula, XMedicamentFor coagulant charging quantity, Q is flow of inlet water（Cube m/hour）, D is flow unit consumption coefficient（Chemical feeding quantity/cube Rice）, P is water inlet total phosphorus content, and L is the setting value of water outlet total phosphorus content, and m is total phosphorus correction factor, and S is water inlet solid suspension Content, G are the setting value of water outlet solid suspension content, and n is solid suspension correction factor, and k is correction factor.
- A kind of 6. full-automatic coagulant dosage system according to claim 4, it is characterised in that the ginseng in the step S2 Number includes：Total phosphorus correction factor m, solid suspension correction factor n, correction factor k, value are respectively：0.9≤m≤1.0；When influent turbidity is 0 ~ 100NTU, 0≤n≤0.2,1≤k≤1.2；During influent turbidity ＞ 100NTU, 0.2≤n≤0.4,1.2≤k≤1.5.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108502998A (en) * | 2018-03-23 | 2018-09-07 | 湖州新龙潭净水设备有限公司 | A kind of purifier coagulant dosage device |
| CN109592760A (en) * | 2019-01-23 | 2019-04-09 | 重庆工程职业技术学院 | The intelligent dosing system of clean water treatment factory |
| CN110183027A (en) * | 2019-06-03 | 2019-08-30 | 太平洋水处理工程有限公司 | A kind of adaptive magnetic medium coagulating sedimentation water process autocontrol method |
| CN111320246A (en) * | 2020-03-12 | 2020-06-23 | 青岛道斯康环保科技有限公司 | Coagulant intelligent accurate adding control system based on multivariable control |
| CN112723669A (en) * | 2020-12-18 | 2021-04-30 | 逸文环境发展有限公司 | Sewage intelligent detection processing system based on municipal construction |
| CN112794426A (en) * | 2021-04-13 | 2021-05-14 | 湖南熙湘实业有限公司 | Flocculating agent dosing system for water treatment based on two-way multi-parameter online detection |
| CN113204204A (en) * | 2021-03-19 | 2021-08-03 | 河海大学 | Full-automatic soil water-retaining agent adding system and operation method thereof |
| CN113772755A (en) * | 2021-08-26 | 2021-12-10 | 江西铜业股份有限公司 | Method and system for optimizing reagent feeding for treating mining and beneficiation wastewater pollutants |
| CN114940533A (en) * | 2022-06-20 | 2022-08-26 | 中建三局绿色产业投资有限公司 | Intelligent control system and method for adding medicament in magnetic coagulation sedimentation system |
| CN116216807A (en) * | 2023-02-24 | 2023-06-06 | 青岛张村河水务有限公司 | Intelligent dosing system based on sewage treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108502998A (en) * | 2018-03-23 | 2018-09-07 | 湖州新龙潭净水设备有限公司 | A kind of purifier coagulant dosage device |
| CN109592760A (en) * | 2019-01-23 | 2019-04-09 | 重庆工程职业技术学院 | The intelligent dosing system of clean water treatment factory |
| CN109592760B (en) * | 2019-01-23 | 2021-09-21 | 重庆工程职业技术学院 | Intelligent dosing system of water purification plant |
| CN110183027A (en) * | 2019-06-03 | 2019-08-30 | 太平洋水处理工程有限公司 | A kind of adaptive magnetic medium coagulating sedimentation water process autocontrol method |
| CN111320246A (en) * | 2020-03-12 | 2020-06-23 | 青岛道斯康环保科技有限公司 | Coagulant intelligent accurate adding control system based on multivariable control |
| CN112723669A (en) * | 2020-12-18 | 2021-04-30 | 逸文环境发展有限公司 | Sewage intelligent detection processing system based on municipal construction |
| CN113204204A (en) * | 2021-03-19 | 2021-08-03 | 河海大学 | Full-automatic soil water-retaining agent adding system and operation method thereof |
| CN112794426A (en) * | 2021-04-13 | 2021-05-14 | 湖南熙湘实业有限公司 | Flocculating agent dosing system for water treatment based on two-way multi-parameter online detection |
| CN113772755A (en) * | 2021-08-26 | 2021-12-10 | 江西铜业股份有限公司 | Method and system for optimizing reagent feeding for treating mining and beneficiation wastewater pollutants |
| CN113772755B (en) * | 2021-08-26 | 2023-09-08 | 江西铜业股份有限公司 | Reagent throwing optimization method and system for treating pollutants in mineral separation wastewater |
| CN114940533A (en) * | 2022-06-20 | 2022-08-26 | 中建三局绿色产业投资有限公司 | Intelligent control system and method for adding medicament in magnetic coagulation sedimentation system |
| CN114940533B (en) * | 2022-06-20 | 2023-03-31 | 中建三局绿色产业投资有限公司 | Intelligent control system and method for adding medicament in magnetic coagulation sedimentation system |
| CN116216807A (en) * | 2023-02-24 | 2023-06-06 | 青岛张村河水务有限公司 | Intelligent dosing system based on sewage treatment |
| CN116216807B (en) * | 2023-02-24 | 2023-09-01 | 青岛张村河水务有限公司 | Intelligent Dosing System Based on Sewage Treatment |
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Application publication date: 20180105 |