CN106219708B - It is a kind of to be flowed back coagulating treatment system and method based on the reinforcement sludge that automatically controls - Google Patents
It is a kind of to be flowed back coagulating treatment system and method based on the reinforcement sludge that automatically controls Download PDFInfo
- Publication number
- CN106219708B CN106219708B CN201610836589.8A CN201610836589A CN106219708B CN 106219708 B CN106219708 B CN 106219708B CN 201610836589 A CN201610836589 A CN 201610836589A CN 106219708 B CN106219708 B CN 106219708B
- Authority
- CN
- China
- Prior art keywords
- signal
- raw water
- sludge
- preset value
- plc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C02F1/5209—Regulation methods for flocculation or precipitation
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of based on the reinforcement sludge automatically controlled backflow coagulating treatment system and method, using the regulating reservoir being sequentially connected in series, mixing pit, flocculation basin, sedimentation basin, storage basin, quenched pool water treatment structures.Sludge reflux automatic control subsystem includes sludge reflux pump, mud discharging pump and PLC, and coagulation administration automatic control subsystem includes Monitoring technique Flocculation Detector, variable-frequency speed-regulating controller and PLC.Sludge quality on-line detector detects the sludge quality concentration in quenched pond in real time, and online transmissometer detects raw water turbidity and raw water and returned sludge mixed liquor turbidity after regulating reservoir in real time, and raw water flow meter detects raw water flow in real time.The present invention can realize effective control of sludge reflux technique, and optimised coagulation control process realizes the synthetical automatic control of sludge reflux and coagulation process, ensures that technical process is in optimum range；The present invention optimizes suitable for the coagulation process of water factory, suitable for proposing mark transformation and the application of newly-built water factory in existing water factory.
Description
Technical field
It is more particularly to a kind of to utilize automatic control system reinforcement sludge backflow coagulation the invention belongs to water-treatment technology field
The system and method for processing.
Background technology
Coagulation is to feed water and one of most common key link is applied in waste water treatment process, and the quality of coagulation effect is very
Operating condition, final outflow water water quality and the integrated artistic operating cost of follow-up process are affected in big degree, is water all the time
Important research topic in process field.Under many circumstances, coagulation effect is by the hydrolysis rate of traditional coagulant, water temperature and original
The influence of the factors such as water turbidity is very big so that flco growth rate is slow, flco density that is being formed is small, sinking speed is slow, solid-liquid point
, sedimentation time length poor from effect etc., subsequent technique load is aggravated, and final process effect is deteriorated.The backflow reinforcing of water purification precipitating sludge
Coagulation technology can be effectively improved the coagulation effect of raw water, be one of focus of Recent study.Water purification precipitating sludge is usually contained
Substantial amounts of aluminium, ferrous metal hydroxide and suspension colloid particulate matter, mixing pit or wadding are back to by the precipitating sludge after concentration
Solidifying pond, on the one hand can increase particle concentration in water, improve the effective collision probability of particle, increase flocculation core；The opposing party
Remaining metal hydroxides still has coagulation in face, sludge, can reduce dosage of PAC, improves coagulation effect.However,
The operational factor of sludge reflux technique, such as sludge reflux amount, excess sludge discharge capacity, storage mud time and returned sludge are in process
The factor such as cycle-index directly affect coagulation effect and effluent quality.
The content of the invention
In order to solve the above-mentioned technical problem, returned the invention provides a kind of sludge based on sludge reflux technique robot control system(RCS)
The enhanced coagulation control system and method for stream, realize effective control of sludge reflux technique, the effect of enhanced coagulation depollution,
Guarantee.
The technical scheme that is used of system of the present invention is：It is a kind of to be flowed back coagulating treatment based on the reinforcement sludge that automatically controls
System, it is characterised in that：Including raw water pump, regulating reservoir, mixing pit, flocculation basin, sedimentation basin, storage basin, quenched pond, sludge reflux
Pump, the first mud discharging pump, sludge quality concentration on-line detector, Monitoring technique flocculation sensor, Monitoring technique flocculation detection
Instrument, variable-frequency speed-regulating controller, measuring pump, medicinal cupping, online transmissometer, raw water flow meter, PLC, the second mud discharging；
The regulating reservoir, mixing pit, flocculation basin, sedimentation basin, storage basin, quenched pond are sequentially connected in series by pipeline, are constituted at water
Manage structures；Raw water is pumped into the regulating reservoir by the raw water；The sludge of the storage basin passes through first sludge
Outside emptying pump discharge system；The sludge part in the quenched pond is pumped into the regulating reservoir by the sludge reflux, separately
A part by the second mud discharging pump discharge system outside；
Monitoring technique flocculation sensor is arranged in the flocculation basin, the Monitoring technique Flocculation Detector with it is described
Monitoring technique flocculation sensor connection, the detection for fluctuating signal in flocculation process；
The online transmissometer be separately positioned on raw water water inlet pipe and mixing pit water inlet pipe on, the raw water flow
Meter is arranged on raw water water inlet pipe；
The medicinal cupping adds coagulant by measuring pump into the mixing pit；The variable-frequency speed-regulating controller and the meter
Pump connection is measured, the control of revolution speed is measured for coagulant；
The PLC is arranged with the sludge reflux pump, the first mud discharging pump, variable-frequency speed-regulating controller, the second sludge respectively
Put connection, for sludge reflux pump, the first mud discharging pump, the second mud discharging pump signal reception and regulation, and sludge
The detection of mass concentration；
The PLC respectively with the sludge quality concentration on-line detector, Monitoring technique Flocculation Detector, online turbidity
Instrument, the connection of raw water flow meter, for the reception and regulation of variable-frequency speed-regulating controller, the signal of Monitoring technique Flocculation Detector, with
And the detection of raw water turbidity and flow.
Preferably, the water after the sedimentation basin precipitation is handled by subsequent processing units.
The technical scheme that is used of method of the present invention is：It is a kind of to be flowed back coagulating treatment based on the reinforcement sludge that automatically controls
Method, it is characterised in that comprise the following steps：
Step 1：Sludge reflux revolution speed is set on PLC and the pulsation detection signal of Monitoring technique Flocculation Detector is pre-
If value；
Step 2：The signal transmission that online transmissometer, raw water flow meter and sludge quality concentration on-line detector instrument are detected
Into PLC；
Step 3：PLC receives signal and the raw water flow corresponding to sludge reflux revolution speed preset value, raw water by step 2
Turbidity and sludge quality concentration are compared, if meeting values, and PLC continues by the control of original control signal output valve
Sludge reflux pump, if not meeting values, PLC proportionally-Integrated Derivative control mode regulation Analog control signal
Output valve, changes sludge reflux amount under new instruction；
Step 4：The pulsation detection signal preset value institute that step 2 is received signal and Monitoring technique Flocculation Detector by PLC is right
The turbid ity signal of raw water flow, raw water and the returned sludge mixed liquor answered is compared, if meeting values, PLC
Continue by original control signal output valve control metering revolution speed；If not meeting values, PLC proportionally regulative modes
Analog control signal value output is controlled, changes metering revolution speed under new instruction, changes coagulant charging quantity.
Preferably, in step 3, when sludge quality concentration is 700mg/L~3000mg/L, raw water flow and sludge matter
When the value detection signal of amount concentration is differed with the raw water flow corresponding to preset value and sludge quality concentration signal less than ± 5%,
The signal fluctuation of raw water turbidity is more than 10%, and turbidity value is when being still below 50.0NTU：If 1. Turbidity measurement signal is than preset value pair
The turbid ity signal answered is higher, then PLC proportionally-Integrated Derivative control mode reduce control signal output valve, reduction sludge return
Revolution speed is flowed to 0.5~0.75 times of original sludge reflux revolution speed, until the raw water turbidity signal detected is in preset value pair
In the range of answering；If 2. Turbidity measurement signal turbid ity signal more corresponding than preset value is relatively low, PLC proportionally-Integrated Derivative control
Mode processed improves control signal output valve, improves the rotating speed of sludge reflux pump to the 1.25~1.5 of original sludge reflux revolution speed
Times, until the raw water turbidity signal detected is in preset value correspondence scope.
Preferably, in step 3, when sludge quality concentration is 700mg/L~3000mg/L, raw water turbidity and sludge matter
Amount concentration signal is differed with the raw water turbidity corresponding to preset value and sludge quality concentration signal less than ± 5%, and turbidity value is still
During less than 50.0NTU, when the fluctuation of raw water flow signal value is more than 10%：If 1. raw water flow detection signal is more corresponding than preset value
Raw water flow signal is higher, then PLC proportionally-Integrated Derivative control mode reduce control signal output valve, reduction sludge return
Revolution speed is flowed to 0.5~0.75 times of original sludge reflux revolution speed, until the raw water flow signal detected is in preset value pair
In the range of answering；If 2. more corresponding than the preset value raw water flow signal of raw water flow detection signal is relatively low, PLC proportionally-product
Point-differential control mode improves control signal output valve, improves the rotating speed of sludge reflux pump to original sludge reflux revolution speed
1.25~1.5 times, until the raw water flow signal detected is in preset value correspondence scope.
Preferably, in step 3, when sludge quality concentration is 700mg/L~3000mg/L, the flow and turbidity of raw water
When signal is all higher than ± the 10% of raw water flow corresponding to preset value and turbid ity signal, stop backflow.
Preferably, in step 4, the detection signal of raw water flow and the signal phase corresponding to pulsation detection signal preset value
When difference is less than ± 5%, when the turbid ity signal of mixed liquor exceedes 5%~15% of signal corresponding to pulsation detection signal preset value：
If 1. the Turbidity measurement signal of mixed liquor turbid ity signal more corresponding than pulsation detection signal preset value is higher, PLC is proportionally
Regulative mode reduces control signal output valve, in the ratio reduction metering revolution speed of increase signal and original signal；If 2. mixing
The Turbidity measurement signal of liquid turbid ity signal more corresponding than pulsation detection signal preset value is relatively low, then PLC proportionally regulative modes
Control signal output valve is improved, metering revolution speed is improved in the ratio of reduction signal and original signal.
Preferably, in step 4, the turbid ity signal of mixed liquor is differed with the signal corresponding to pulsation detection signal preset value
During less than ± 5%, when the detection signal of raw water flow exceedes 10%~20% of signal corresponding to pulsation detection signal preset value：
If 1. the detection signal of raw water flow signal more corresponding than pulsation detection signal preset value is higher, the PLC proportionally sides of regulation
Formula increases control signal output valve, and metering revolution speed is improved in the ratio of increase signal and original signal；If 2. raw water flow
Detect that signal signal more corresponding than pulsation detection signal preset value is relatively low, then proportionally regulative mode reduces control signal to PLC
Output valve, in the ratio reduction metering revolution speed of reduction signal and original signal.
Advantages of the present invention：
1) present invention can realize effective control of sludge reflux technique, and optimised coagulation control process realizes sludge reflux
And the synthetical automatic control of coagulation process, ensure that technical process is in optimum range；
2) present invention optimizes suitable for the coagulation process of water factory, suitable for carrying mark transformation and newly-built water factory in existing water factory
Using.
Brief description of the drawings
Fig. 1：The schematic diagram of device of the embodiment of the present invention；
Fig. 2：The method flow diagram of the embodiment of the present invention.
Embodiment
Understand for the ease of those of ordinary skill in the art and implement the present invention, below in conjunction with the accompanying drawings and embodiment is to this hair
It is bright to be described in further detail, it will be appreciated that implementation example described herein is merely to illustrate and explain the present invention, not
For limiting the present invention.
It is related to sludge back flow quantity, returned sludge mass concentration, excess sludge discharge capacity in sludge reflux coagulation process, and
The parameters such as raw water quality, water, coagulant charging quantity, influence factor is more, and control is complicated, and coagulation effect and effluent quality are difficult to control
System, so far also without effective control technology.The present invention is established a kind of flowed back using automatic control system come reinforcement sludge and mixed
The method of solidifying processing.On the basis of existing conventional coagulation, depositing technology, transported by crucial raw water quality index and sludge reflux
The observing and controlling of row parameter, sludge reflux technological parameter and coagulant administration amount are automatically adjusted come strong using programmable controller (PLC)
Change the effect of coagulation depollution, reduce subsequent technique operating load.
See Fig. 1, it is a kind of based on the reinforcement sludge automatically controlled backflow coagulating treatment system, including original that the present invention is provided
Water pump 1, regulating reservoir 2, mixing pit 3, flocculation basin 4, sedimentation basin 5, subsequent processing units 6, storage basin 7, quenched pond 8, sludge reflux
Pump 9, the first mud discharging pump 10, sludge quality concentration on-line detector 11, Monitoring technique flocculation sensor 12, Monitoring technique wadding
Solidifying detector 13, variable-frequency speed-regulating controller 14, measuring pump 15, medicinal cupping 16, online transmissometer 17, raw water flow meter 18, PLC19,
Second mud discharging pump 20；Regulating reservoir 2, mixing pit 3, flocculation basin 4, sedimentation basin 5, storage basin 7, quenched pond 8 are gone here and there successively by pipeline
Connection, constitutes water treatment building；Raw water is sent into regulating reservoir 2 by raw water pump 1；The sludge of storage basin 7 is arranged by the first sludge
Put outside the discharge system of pump 10；The sludge part in quenched pond 8 is sent into regulating reservoir 2 by sludge reflux pump 9, and another part passes through
Outside the discharge system of second mud discharging pump 20；Online transmissometer 17 is separately positioned on raw water water inlet pipe and mixing pit 3 enters water
On pipeline, raw water flow meter 18 is arranged on raw water water inlet pipe；Monitoring technique flocculation sensor 12 is arranged in flocculation basin 4,
Monitoring technique Flocculation Detector 13 is connected with Monitoring technique flocculation sensor 12, and PLC19 is dirty with sludge reflux pump 9, first respectively
Mud emptying pump 10, variable-frequency speed-regulating controller 14, the second mud discharging pump 20 are connected；PLC19 is online with sludge quality concentration respectively
Detector 11, Monitoring technique Flocculation Detector 13, online transmissometer 17, raw water flow meter 18 are connected；Medicinal cupping 16 passes through measuring pump
15 add coagulant into mixing pit 3；Variable-frequency speed-regulating controller 14 is intended to measuring pump 15 and connected, and the water after the precipitation of sedimentation basin 5 is by rear
Continuous processing unit 6 is handled.
See Fig. 2, it is a kind of based on the reinforcement sludge automatically controlled backflow coagulation treatment method that the present invention is provided, including with
Lower step：
Step 1：The pulsation detection of the rotating speed of sludge reflux pump 9 and Monitoring technique Flocculation Detector 13 is set on PLC19
Signal preset value；
Sludge reflux revolution speed preset value is determined by raw water flow, turbidity and sludge quality concentration three；Pulsation detection is believed
Number preset value is determined as both raw water flow, raw water and returned sludge mixed liquor turbidity.
Step 2：The letter that online transmissometer 17, raw water flow meter 18 and the instrument of sludge quality concentration on-line detector 11 are detected
Number transmit into PLC19；
Step 3：PLC19 by the raw water flow received corresponding to signal and the rotating speed preset value of sludge reflux pump 9 of step 2,
Raw water turbidity and sludge quality concentration are compared, if meeting values, and PLC19 continues by the output of original control signal
Value control sludge reflux pump 9, if not meeting values, PLC proportionally-Integrated Derivative control mode regulation analog quantity
Control signal output valve, changes sludge reflux amount under new instruction；
(I) when sludge quality concentration is 700mg/L~3000mg/L, the signal inspection of raw water flow and sludge quality concentration
When measured value is differed with the raw water flow corresponding to preset value and sludge quality concentration signal less than ± 5%, the signal of raw water turbidity
Fluctuation is more than 10%, and turbidity value is when being still below 50.0NTU：If 1. Turbidity measurement signal turbid ity signal more corresponding than preset value is inclined
Height, then PLC proportionally-Integrated Derivative control mode reduces control signal output valve, reduction sludge reflux revolution speed is to original
0.5~0.75 times of sludge reflux revolution speed, until the raw water turbidity signal detected is in preset value correspondence scope；If 2. turbid
More corresponding than the preset value turbid ity signal of degree detection signal is relatively low, then PLC proportionally-Integrated Derivative control mode improves control
Signal value output, improves the rotating speed of sludge reflux pump to 1.25~1.5 times of original sludge reflux revolution speed, until what is detected
Raw water turbidity signal is in preset value correspondence scope.
(II) when sludge quality concentration is 700mg/L~3000mg/L, raw water turbidity and sludge quality concentration signal with
Raw water turbidity and sludge quality concentration signal difference corresponding to preset value are less than ± 5%, and turbidity value is still below 50.0NTU
When, when the fluctuation of raw water flow signal value is more than 10%：If 1. raw water flow detection signal raw water flow more corresponding than preset value is believed
It is number higher, then PLC proportionally-Integrated Derivative control mode reduces control signal output valve, reduction sludge reflux revolution speed is extremely
0.5~0.75 times of original sludge reflux revolution speed, until the raw water flow signal detected is in preset value correspondence scope；②
If more corresponding than the preset value raw water flow signal of raw water flow detection signal is relatively low, PLC proportionally-Integrated Derivative control
Mode improves control signal output valve, improves the rotating speed of sludge reflux pump to 1.25~1.5 times of original sludge reflux revolution speed,
Until the raw water flow signal detected is in preset value correspondence scope.
(III) when sludge quality concentration is 700mg/L~3000mg/L, the flow and turbid ity signal of raw water are all higher than pre-
If the corresponding raw water flow of value and turbid ity signal ± 10% when, stop backflow.
Step 4：PLC9 receives step 2 the pulsation detection signal preset value institute of signal and Monitoring technique Flocculation Detector 13
The turbid ity signal of corresponding raw water flow, raw water and returned sludge mixed liquor is compared, if meeting values,
PLC9 continues to control the rotating speed of measuring pump 15 by original control signal output valve；If not meeting values, PLC9 is proportionally
Regulative mode controls Analog control signal value output, changes the rotating speed of measuring pump 15 under new instruction, changes coagulant dosage
Amount.
(I) when the detection signal of raw water flow is differed with the signal corresponding to pulsation detection signal preset value less than ± 5%,
When the turbid ity signal of mixed liquor exceedes 5%~15% of signal corresponding to pulsation detection signal preset value：If 1. mixed liquor is turbid
Degree detection signal turbid ity signal more corresponding than pulsation detection signal preset value is higher, then proportionally regulative mode reduces control to PLC
Signal value output processed, in the ratio reduction metering revolution speed of increase signal and original signal；If 2. the Turbidity measurement of mixed liquor is believed
Number turbid ity signal more corresponding than pulsation detection signal preset value is relatively low, then PLC proportionally regulative mode to improve control signal defeated
Go out value, metering revolution speed is improved in the ratio of reduction signal and original signal.
(II) when the turbid ity signal of mixed liquor is differed with the signal corresponding to pulsation detection signal preset value less than ± 5%,
When the detection signal of raw water flow exceedes 10%~20% of signal corresponding to pulsation detection signal preset value：If 1. raw water flow
Detection signal signal more corresponding than pulsation detection signal preset value it is higher, then PLC proportionally regulative mode increase control letter
Number output valve, metering revolution speed is improved in the ratio of increase signal and original signal；If 2. the detection signal of raw water flow compares arteries and veins
Dynamic to detect that the corresponding signal of signal preset value is relatively low, then proportionally regulative mode reduces control signal output valve to PLC, by reduction
The ratio reduction metering revolution speed of signal and original signal.
The present invention can further reduce pollutant release in returned sludge by the regulation of follow-up coagulant charging quantity and produce
Raw negative effect.
The present invention is further elaborated by the following examples, the start and stop for the frequency control measuring pump selected in embodiment
And rotating speed passes through PLC controls, measuring pump input signal：4-20mA, output flow：0-0.6L/h, it is linear with control signal
Relation.Light transmittance pulsation detection instrument uses submersed sensor and multifunctional measurement and control instrument.Raw water flow meter range ability be 0~
800L/h, 4-20mA analog output, it is linear with control signal.Online transmissometer range ability is 0.00-
100.00NTU, 4-20mA analog outputs.Sludge quality concentration on-line detector range ability is 0-9999mg/L, 4-20mA
Analog output.PLC selects Siemens S7-224 type main frames, configures TP177A type touch control screens.Sludge reflux pump and discharge
Revolution speed is adjustable in 0~100rmp, 4-20mA analog outputs.Using Siemens's winCC configuration softwares to reflux technique and
Flocculation process is controlled.The auxiliary control of system also includes mud discharging pump start and stop, sludge reflux pump start and stop, frequency control control
Device start and stop processed, battery main switch etc..Lift three examples and illustrate embodiment, but scope of the presently claimed invention not office
It is limited to this.
Embodiment 1：
Raw water turbidity is 20.0NTU, and raw water flow is 500.0L/h and the sludge quality concentration in quenched pond is
700mg/L, now the corresponding capacity of returns of sludge reflux revolution speed preset value is 31.9L/h (volume reflux ratio 6%).Draw satisfaction
Pulsation detection signal preset value after heavy corresponding to water water quality requirement is 3.5 ± 0.5V, and corresponding metering pump discharge is 5ml/
min.When the raw water turbidity detected is 45.0NTU, raw water flow is 520.0L/h and the mass concentration of sludge is 720mg/L
When, because now raw water turbidity rises 25.0NTU, PLC is compared the signal detected with preset value, reduces sludge reflux amount
To 21.7L/h (reflux ratio is 4%).Meanwhile, it is 3.4V to find pulsation detection value detection signal, meets preset requirement, it is not necessary to
Change measuring pump rotational speed regulation consuming amount of concrete.The raw water turbidity detected again is 5.0NTU, and raw water flow is 480.0L/h
When with the mass concentration of sludge being 680mg/L, because now raw water turbidity reduces 15.0NTU, PLC by the signal detected with
Preset value compares, and improves sludge reflux amount to 41.7L/h (reflux ratio is 8%).Meanwhile, it is found that pulsation detection value detection signal is
3.8V, meets preset requirement, it is not necessary to change measuring pump rotational speed regulation consuming amount of concrete.When the turbidity for detecting raw water is
18.0NTU, and raw water flow is 510L/h and the mass concentration of sludge is 710mg/L, now due to raw water turbidity, flowed fluctuation
Very small, PLC is compared the signal detected with preset value, maintains original sludge reflux amount, now pulsation detection signal detection
It is 3.6V in values to be worth, and meets preset requirement.
Embodiment 2：
Raw water flow is detected for 600.0L/h by raw water measuring pump, raw water turbidity is detected for 10.0NTU, and adjusted
Sludge quality concentration in matter pond is 1200mg/L, and now the corresponding capacity of returns of sludge reflux revolution speed preset value is 52.2L/h
(volume reflux ratio 8%).And draw meet it is heavy after pulsation detection signal preset value corresponding to water water quality requirement for 4.0 ±
0.5V, corresponding metering pump discharge is 5ml/min.When reflux technique runs to certain phase, the flow for detecting raw water is
550.0L/h, and raw water turbidity is 12.0NTU and the mass concentration of sludge is 1250mg/L, now because raw water flow is reduced
8.3%, PLC are compared the signal detected with preset value, improve sludge reflux amount to 64.4L/h (reflux ratio is 10%).Together
When, it is 3.8V to find pulsation detection value detection signal, meets sets requirement, it is not necessary to change metering revolution speed.When detecting original
The flow of water is 650L/h, and raw water turbidity is 15.0NTU and the mass concentration of sludge is 1350mg/L, now due to raw water stream
Amount adds 8.3%, PLC and is compared the signal detected with preset value, and reducing sludge reflux amount, (reflux ratio is to 27.1L/h
4%).Meanwhile, it is 4.2V to find pulsation detection value detection signal, meets sets requirement, it is not necessary to change metering revolution speed.Work as inspection
The flow for measuring raw water is 610L/h, and raw water turbidity is 12.0NTU and the mass concentration of sludge is 1050mg/L, now due to
Raw water flow fluctuation is smaller, and PLC is compared the signal detected with preset value, maintains original sludge reflux amount.Meanwhile, find arteries and veins
Dynamic detection value detection signal is 4.2V, meets sets requirement, it is not necessary to change metering revolution speed.
Embodiment 3：
Raw water flow is detected for 550.0L/h by raw water measuring pump, raw water turbidity is detected for 25.0NTU, and adjusted
Sludge quality concentration in matter pond is 3000mg/L, and now the corresponding capacity of returns of sludge reflux revolution speed preset value is 35.1L/h
(volume reflux ratio 6%).And draw meet it is heavy after pulsation detection signal preset value corresponding to water water quality requirement for 3.0 ±
0.5V, corresponding metering pump discharge is 5ml/min.When the raw water turbidity value detected is 100.0NTU, raw water flow is still
During 550.0L/h, stop backflow, the mixed liquor turbidity change being detected simultaneously by is little, adjustment metering revolution speed is 1.7ml/min,
Reduce consuming amount of concrete；When the raw water turbidity detected is 23.0NTU, and raw water flow is 1000.0L/h, stop backflow, adjust
Whole metering revolution speed is 9.1ml/min, and increase coagulant charging quantity makes coagulation effect optimal.
Although this specification more used raw water pump 1, regulating reservoir 2, mixing pit 3, flocculation basin 4, sedimentation basin 5, follow-up
Processing unit 6, storage basin 7, quenched pond 8, sludge reflux pump 9, the first mud discharging pump 10, sludge quality concentration on-line detector
11st, Monitoring technique flocculation sensor 12, Monitoring technique Flocculation Detector 13, variable-frequency speed-regulating controller 14, measuring pump 15, medicinal cupping
16th, the term such as online transmissometer 17, raw water flow meter 18, PLC19, second mud discharging 20, but be not precluded from using other arts
The possibility of language.It is used for the purpose of more easily describing the essence of the present invention using these terms, is construed as any one
Additional limitation is planted all to disagree with spirit of the present invention.
It should be appreciated that the part that this specification is not elaborated belongs to prior art.
It should be appreciated that the above-mentioned description for preferred embodiment is more detailed, therefore it can not be considered to this
The limitation of invention patent protection scope, one of ordinary skill in the art is not departing from power of the present invention under the enlightenment of the present invention
Profit is required under protected ambit, can also be made replacement or be deformed, each fall within protection scope of the present invention, this hair
It is bright scope is claimed to be determined by the appended claims.
Claims (8)
1. it is a kind of based on the reinforcement sludge automatically controlled backflow coagulating treatment system, it is characterised in that：Including raw water pump（1）, adjust
Save pond（2）, mixing pit（3）, flocculation basin（4）, sedimentation basin（5）, storage basin（7）, quenched pond（8）, sludge reflux pump（9）, first
Mud discharging pump（10）, sludge quality concentration on-line detector（11）, Monitoring technique flocculation sensor（12）, Monitoring technique flocculation
Detector（13）, variable-frequency speed-regulating controller（14）, measuring pump（15）, medicinal cupping（16）, online transmissometer（17）, raw water flow meter
（18）、PLC（19）, the second mud discharging pump（20）；
The regulating reservoir（2）, mixing pit（3）, flocculation basin（4）, sedimentation basin（5）, storage basin（7）, quenched pond（8）By pipeline successively
Series connection, constitutes water treatment building；Raw water passes through the raw water pump（1）Send into the regulating reservoir（2）It is interior；The storage basin（7）
Sludge pass through first mud discharging pump（10）Outside discharge system；The quenched pond（8）Sludge a part by described
Sludge reflux pump（9）Send into the regulating reservoir（2）Interior, another part passes through second mud discharging pump（20）Discharge system
Outside；
The Monitoring technique flocculation sensor（12）It is arranged on the flocculation basin（4）It is interior, the Monitoring technique Flocculation Detector
（13）With Monitoring technique flocculation sensor（12）Connection, the detection for fluctuating signal in flocculation process；
The online transmissometer（17）It is separately positioned on raw water water inlet pipe and mixing pit（3）On water inlet pipe, the raw water
Flowmeter（18）It is arranged on raw water water inlet pipe；
The medicinal cupping（16）Pass through measuring pump（15）To the mixing pit（3）Interior addition coagulant；The variable-frequency speed-regulating controller
（14）With the measuring pump（15）Connection, the control for measuring revolution speed；
The PLC（19）Respectively with the sludge reflux pump（9）, the first mud discharging pump（10）, sludge quality concentration examines online
Survey instrument（11）, the second mud discharging pump（20）Connection, for sludge reflux pump（9）, the first mud discharging pump（10）, the second sludge
Emptying pump（20）The reception and regulation of signal, and sludge quality concentration detection；
The PLC（19）Respectively with the variable-frequency speed-regulating controller（14）, Monitoring technique Flocculation Detector（13）, online transmissometer
（17）, raw water flow meter（18）Connection, for variable-frequency speed-regulating controller（14）, Monitoring technique Flocculation Detector（13）Signal
Receive and adjust, and raw water turbidity and flow detection；
Described sludge quality concentration on-line detector（11）Quenched pond is detected in real time（8）Sludge quality concentration, online turbidity
Instrument（17）Raw water turbidity is detected in real time and positioned at regulating reservoir（2）Raw water afterwards and returned sludge mixed liquor turbidity, raw water flow
Meter（18）Raw water flow is detected in real time.
2. it is according to claim 1 based on the reinforcement sludge automatically controlled backflow coagulating treatment system, it is characterised in that：Institute
State sedimentation basin（5）Water after precipitation is by subsequent processing units（6）Processing.
3. returned using reinforcement sludge is carried out based on the reinforcement sludge backflow coagulating treatment system automatically controlled described in claim 1
Flow coagulation treatment method, it is characterised in that comprise the following steps：
Step 1：In PLC（19）Upper setting sludge reflux pump（9）Rotating speed and Monitoring technique Flocculation Detector（13）Pulsation inspection
Survey signal preset value；
Step 2：Online transmissometer（17）, raw water flow meter（18）With sludge quality concentration on-line detector（11）What instrument was detected
Signal is transmitted to PLC（19）In；
Step 3：PLC（19）By the reception signal and sludge reflux pump of step 2（9）Raw water flow corresponding to rotating speed preset value,
Raw water turbidity and sludge quality concentration are compared, if meeting values, PLC（19）Continue defeated by original control signal
Go out value control sludge reflux pump（9）If not meeting values, PLC proportionally-Integrated Derivative control mode regulation mould
Analog quantity control signal output valve, changes sludge reflux amount under new instruction；
Step 4：PLC（9）Step 2 is received into signal and Monitoring technique Flocculation Detector（13）Pulsation detection signal preset value institute
The turbid ity signal of corresponding raw water flow, raw water and returned sludge mixed liquor is compared, if meeting values,
PLC（9）Continue to control measuring pump by original control signal output valve（15）Rotating speed；If not meeting values, PLC（9）Press
Analog control signal value output is controlled according to proportion adjustment mode, measuring pump is changed under new instruction（15）Rotating speed, changes mixed
Solidifying agent dosage.
4. method according to claim 3, it is characterised in that：In step 3, when sludge quality concentration be 700mg/L ~
During 3000mg/L, raw water flow and sludge matter corresponding to the value detection signal and preset value of raw water flow and sludge quality concentration
When measuring concentration signal difference and being less than ± 5%, the signal fluctuation of raw water turbidity is more than 10%, and turbidity value is when being still below 50.0NTU：①
If Turbidity measurement signal turbid ity signal more corresponding than preset value is higher, PLC proportionally-Integrated Derivative control mode reduce
Control signal output valve, 0.5 ~ 0.75 times of reduction sludge reflux revolution speed to original sludge reflux revolution speed, until detecting
Raw water turbidity signal preset value correspondence scope in；If 2. Turbidity measurement signal turbid ity signal more corresponding than preset value is relatively low,
Then PLC proportionally-Integrated Derivative control mode improves control signal output valve, improves the rotating speed of sludge reflux pump to original
1.25 ~ 1.5 times of sludge reflux revolution speed, until the raw water turbidity signal detected is in preset value correspondence scope.
5. method according to claim 3, it is characterised in that：In step 3, when sludge quality concentration be 700mg/L ~
During 3000mg/L, raw water turbidity and sludge quality concentration signal are believed with the raw water turbidity and sludge quality concentration corresponding to preset value
Number difference is less than ± 5%, and turbidity value is when being still below 50.0NTU, when the fluctuation of raw water flow signal value is more than 10%：If 1. raw water stream
More corresponding than the preset value raw water flow signal of amount detection signal is higher, then PLC proportionally-Integrated Derivative control mode reduces
Control signal output valve, 0.5 ~ 0.75 times of reduction sludge reflux revolution speed to original sludge reflux revolution speed, until detecting
Raw water flow signal preset value correspondence scope in；If 2. raw water flow detection signal raw water flow more corresponding than preset value is believed
It is number relatively low, then PLC proportionally-Integrated Derivative control mode improves control signal output valve, improves the rotating speed of sludge reflux pump
To 1.25 ~ 1.5 times of original sludge reflux revolution speed, until the raw water flow signal detected is in preset value correspondence scope.
6. method according to claim 3, it is characterised in that：In step 3, when sludge quality concentration be 700mg/L ~
During 3000mg/L, the flow and turbid ity signal of raw water are all higher than ± the 10% of raw water flow corresponding to preset value and turbid ity signal
When, stop backflow.
7. method according to claim 3, it is characterised in that：In step 4, the detection signal and pulsation detection of raw water flow
When signal difference corresponding to signal preset value is less than ± 5%, the turbid ity signal of mixed liquor exceedes pulsation detection signal preset value institute
During to the 5% ~ 15% of induction signal：If the 1. Turbidity measurement signal of mixed liquor turbid ity signal more corresponding than pulsation detection signal preset value
Higher, then proportionally regulative mode reduces control signal output valve to PLC, based on the ratio reduction of increase signal and original signal
Measure revolution speed；If 2. the Turbidity measurement signal of mixed liquor turbid ity signal more corresponding than pulsation detection signal preset value is relatively low, PLC
Proportionally regulative mode improves control signal output valve, and metering revolution speed is improved in the ratio of reduction signal and original signal.
8. method according to claim 3, it is characterised in that：In step 4, turbid ity signal and the pulsation detection of mixed liquor are believed
When signal difference corresponding to number preset value is less than ± 5%, the detection signal of raw water flow exceedes pulsation detection signal preset value institute
During to the 10% ~ 20% of induction signal：If 1. the detection signal of raw water flow signal more corresponding than pulsation detection signal preset value is higher,
Then proportionally regulative mode increases control signal output valve to PLC, and measuring pump is improved in the ratio of increase signal and original signal
Rotating speed；If 2. the detection signal of raw water flow signal more corresponding than pulsation detection signal preset value is relatively low, PLC is proportionally adjusted
Section mode reduces control signal output valve, in the ratio reduction metering revolution speed of reduction signal and original signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610836589.8A CN106219708B (en) | 2016-09-21 | 2016-09-21 | It is a kind of to be flowed back coagulating treatment system and method based on the reinforcement sludge that automatically controls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610836589.8A CN106219708B (en) | 2016-09-21 | 2016-09-21 | It is a kind of to be flowed back coagulating treatment system and method based on the reinforcement sludge that automatically controls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106219708A CN106219708A (en) | 2016-12-14 |
| CN106219708B true CN106219708B (en) | 2017-08-08 |
Family
ID=58076520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610836589.8A Active CN106219708B (en) | 2016-09-21 | 2016-09-21 | It is a kind of to be flowed back coagulating treatment system and method based on the reinforcement sludge that automatically controls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106219708B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111138004A (en) * | 2020-01-14 | 2020-05-12 | 山东省城市供排水水质监测中心 | Coagulant adding control system and method |
| CN113479978B (en) * | 2021-06-01 | 2022-04-01 | 华能(浙江)能源开发有限公司玉环分公司 | Seawater pretreatment method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003053352A (en) * | 2001-08-21 | 2003-02-25 | Ebara Corp | Flocculating and solid-liquid separating treatment facility |
| CN101805050B (en) * | 2010-03-17 | 2012-03-28 | 上海大学 | Method and system for controlling coagulant dosing through on-line prediction of turbidity after flocculation water sedimentation |
| CN102385315B (en) * | 2011-09-01 | 2013-05-01 | 深圳市开天源自动化工程有限公司 | Intelligent coagulation chemical dosing control system for water plant and control method thereof |
-
2016
- 2016-09-21 CN CN201610836589.8A patent/CN106219708B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106219708A (en) | 2016-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110862188B (en) | Chemical phosphorus removal accurate dosing system and control method | |
| US8262914B2 (en) | Wastewater treatment system | |
| US9493370B2 (en) | Wastewater treatment system | |
| CN103011356A (en) | Method for controlling automatic chemical dosing of high-turbidity water system | |
| CN104298259B (en) | Carbon source addition feedforward-feedback control device and method | |
| CN107540069A (en) | A kind of full-automatic coagulant dosage system | |
| CN103570190B (en) | Method for controlling feeding amount of chemical phosphorus removal reagents of water reclamation plants based on fuzzy control | |
| CN114230110B (en) | Short-range intelligent phosphorus removal and medicine addition control method, equipment and system for sewage treatment | |
| CN104238527A (en) | Precise control method of sewage treatment plant aeration total quantity | |
| CN106219708B (en) | It is a kind of to be flowed back coagulating treatment system and method based on the reinforcement sludge that automatically controls | |
| CN102531131A (en) | System and method for controlling adding amount of flocculant | |
| CN114275876A (en) | Accurate and intelligent carbon source adding control system and method | |
| CN206051650U (en) | It is a kind of based on automatically control reinforcement sludge backflow coagulating treatment system | |
| CN114538612A (en) | External carbon source accurate dosing system and control method thereof | |
| CN211078571U (en) | Flocculation precipitation system for water plant | |
| CN114380378B (en) | Intelligent phosphorus control drug feeding method and device and storage medium | |
| CN201749385U (en) | Water plant dosage control system for feedforward-feedback composite control | |
| CN1270219C (en) | Self-adaptive control administration apparatus and process thereof | |
| CN105731728A (en) | Method and process device for improving activated sludge settling performance | |
| KR20030003172A (en) | A best control cohesion machine of a water purification plant and its best contol method | |
| CN111732187A (en) | Intelligent control method for sewage treatment water quality based on sludge reflux ratio | |
| CN114940533B (en) | Intelligent control system and method for adding medicament in magnetic coagulation sedimentation system | |
| CN207525035U (en) | Novel mechanical stirs clarification system | |
| CN1557737A (en) | Intelligent flocculation chemical dosing system | |
| CN108658287A (en) | A kind of Sewage advanced treatment control system and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430074 No. 3 Huangjiahu University Town, Hongshan District, Wuhan City, Hubei Province Patentee after: Junji Environmental Technology Co.,Ltd. Address before: 430074 No. 3 Huangjiahu University Town, Hongshan District, Wuhan City, Hubei Province Patentee before: HUBEI JUNJI WATER TREATMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A system and method of enhanced sludge return coagulation treatment based on automatic control Effective date of registration: 20210628 Granted publication date: 20170808 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: Junji Environmental Technology Co.,Ltd. Registration number: Y2021420000052 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230627 Granted publication date: 20170808 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: Junji Environmental Technology Co.,Ltd. Registration number: Y2021420000052 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |