CN110330085A - Coagulating sedimentation system and technique based on zeta current potential and SS control dosing returned sludge - Google Patents
Coagulating sedimentation system and technique based on zeta current potential and SS control dosing returned sludge Download PDFInfo
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- CN110330085A CN110330085A CN201910650611.3A CN201910650611A CN110330085A CN 110330085 A CN110330085 A CN 110330085A CN 201910650611 A CN201910650611 A CN 201910650611A CN 110330085 A CN110330085 A CN 110330085A
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 40
- 239000010802 sludge Substances 0.000 title claims abstract description 33
- 230000001112 coagulating effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000000701 coagulant Substances 0.000 claims abstract description 44
- 238000010992 reflux Methods 0.000 claims abstract description 22
- 239000003814 drug Substances 0.000 claims abstract description 16
- 238000005189 flocculation Methods 0.000 claims abstract description 12
- 230000016615 flocculation Effects 0.000 claims abstract description 12
- 230000003750 conditioning effect Effects 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 235000006506 Brasenia schreberi Nutrition 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C20/00—Chemoinformatics, i.e. ICT specially adapted for the handling of physicochemical or structural data of chemical particles, elements, compounds or mixtures
- G16C20/10—Analysis or design of chemical reactions, syntheses or processes
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Bioinformatics & Computational Biology (AREA)
- Computing Systems (AREA)
- Theoretical Computer Science (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses the coagulating sedimentation system of the Automatic Dosing returned sludge based on zeta current potential and SS control, water quality monitoring control system includes No.1 transmissometer, No. two transmissometers, zeta potential instrument, No.1 SS instrument, No. two SS instrument, No. three SS instrument；Coagulant dosage point is on mixing pit water inlet pipe；Raw water turbidity sample is on mixing pit water inlet pipe, before coagulant dosage point；Mixing pit sets zeta potentiometer sampled point；No.1 SS instrument sampled point is before flocculation basin water inlet pipe, wadding body reflux point；No. two SS instrument, No. two transmissometer sampled points are set to sedimentation basin outlet pipe；No. three SS instrument sampled points are set at spoil disposal water conditioning tank；No.1 transmissometer, No. two transmissometers, zeta potential instrument, No.1 SS instrument, No. two SS instrument and coagulant dosing system, reflux pump pass through signal wire respectively and connect with server.The present invention adjusts coagulant dosage according to raw water turbidity Xiang Shuizhong dosing coagulant, while by the real time measure mixing pit Zeta potential value, avoids owing medicine or super medicine.
Description
Technical field
The present invention relates to coagulating sedimentation systems and technique based on zeta current potential and SS control dosing returned sludge.
Background technique
Coagulating sedimentation is Xiang Shuizhong dosing coagulant, makes colloidal solid and tiny outstanding through a series of physics, chemical reaction
Floating particles mutually coalesce, and generate bulky grain, and the process of removal is precipitated in sedimentation basin.Coagulating sedimentation contain mixing, it is de- steady,
Flocculation, precipitating three phases, are exceedingly fast wherein taking off steady reaction rate, almost occur simultaneously with mixing.Coagulating sedimentation effect quality,
Be heavily dependent on: whether 1. is completely de- steady in mixing section colloid, generates small wadding body；2. whether small wadding body in flocculation section
Large-sized floc particle can be formed.
When using common process, flocculation section can form big partial size floc particle, largely with processing water in it is small
Wadding body amount is related.Higher concentration is kept in order to make to handle wadding body in water, promotes to generate bulky grain wadding body, part water factory uses
Precipitating sludge is back to flocculation section, increases wadding body concentration by sludge reflux technique, promotes to handle generation bulky grain wadding body in water,
Conducive to precipitating.But the reason of judging coagulant dosage reason or sludge reflux amount only is difficult to sedimentation effect and affects wadding
The generation state of body particle.Lack monitoring to coagulating sedimentation pilot process, causes coagulant dosage and sludge reflux can only be according to
It is controlled by experience.When low turbidity, easily cause dosage higher, regurgitant volume is insufficient；When high concentrtion, dosage is on the low side, regurgitant volume mistake
More problems.
The sedimentation time of high rate settling tank is shorter, is discharged water quality survey coagulation dosing amount with precipitating according to the water quality of raw water,
The purpose of Automatic Dosing can be realized substantially, and this method is also applied to production by part water factory.But to common underload sedimentation basin
Speech detects to effluent quality from mixing (with de- steady), flocculation, precipitating, according to the difference of flow of inlet water, will be about lag one
To two hours.It is a typical Large-lag System.Use automatic control can be with high water quality grade, especially to it
When being that turbidity is substantially increased or declines suddenly.
Summary of the invention
The object of the invention is to lead to dosage and dirt to solve to lack intermediate monitoring means in sludge reflux technique
Mud regurgitant volume cannot accurately control, while coagulating sedimentation has large time delay, be based on raw water quality-precipitating effluent quality tune
Whole medicine consumption is accompanied by high water quality grade, provides a kind of coagulating sedimentation based on zeta current potential and SS control dosing returned sludge
System and technique.
The purpose of the present invention is achieved through the following technical solutions:
The coagulating sedimentation system of Automatic Dosing returned sludge based on zeta current potential and SS control, including water treatment system,
Sludge recirculation system, coagulant medicine system and water quality detection control system；
Water treatment system contains mixing pit, flocculation basin and sedimentation basin；
Sludge recirculation system includes spoil disposal water conditioning tank and reflux pump；
Coagulant medicine system contains coagulant dosing system；
Water quality monitoring control system includes No.1 transmissometer, No. two transmissometers, zeta potential instrument, No.1 SS instrument, No. two SS
No. three SS instrument of instrument；
Coagulant dosage point is on mixing pit water inlet pipe/canal；
Raw water turbidity sample is on mixing pit water inlet pipe/canal, before coagulant dosage point；
Mixing pit sets zeta potentiometer sampled point；
No.1 SS instrument sampled point is before flocculation basin water inlet pipe/canal, wadding body reflux point；
No. two SS instrument, No. two transmissometer sampled points are set to sedimentation basin outlet pipe/canal；
No. three SS instrument sampled points are set at spoil disposal water conditioning tank；
No.1 transmissometer, No. two transmissometers, zeta potential instrument, No.1 SS instrument, No. two SS instrument, No. three SS instrument and coagulant are thrown
Match system, reflux pump pass through signal wire respectively and connect with server.
The technique of the coagulating sedimentation system of Automatic Dosing returned sludge is established former according to previous operating condition or experimental data
The corresponding relationship curve of water turbidity and dosage；
When water inlet, No.1 transmissometer detects raw water turbidity, and server is bent according to the turbidity and dispensing magnitude relation pre-established
Line primary Calculation goes out dosage, and coagulant dosing system is according to calculated value dosing.
It is preferred that zeta potential instrument measures mixing pit water sample Zeta potential value in real time, service is sent data to
Device.Server adjusts coagulant dosage according to Zeta potential value, and control processing water Zeta potential value is in [- 2, -5] range.
It is preferred that control rule is to increase by 5% coagulant dosing when Zeta potential value is less than -5mV
Amount.When Zeta potential value be greater than -2mV when, according to 2% coagulant dosage successively decrease medicine consumption.
It is preferred that No.1 SS instrument measurement mixing pit is discharged SS value, No. three SS instrument measure spoil disposal water conditioning tank SS value；
Server adjusts reflux according to processing water target SS value according to the SS value and current inflow of No.1 SS instrument and the measurement of No. three SS instrument
Pump discharge；
Q " --- sludge reflux flow
Q --- raw water flow
SS --- No.1 SS instrument data
SS ' --- target SS value
SS " --- No. two SS instrument data.
It is preferred that No. two SS instrument and No. two SS transmissometers detect sedimentation basin water quality situation, server is according to No. two
The data of SS instrument and No. two SS transmissometers judge whether effluent quality of sedimentation tank is up to standard.
It is preferred that externally making warning if effluent quality of sedimentation tank is not up to standard.
The beneficial effects of the present invention are:
By increasing intermediate detection instrument and server, solve the problems, such as follows
1. the present invention can be according to raw water turbidity Xiang Shuizhong dosing coagulant, while passing through the real time measure mixing pit Zeta potential
Value adjusts coagulant dosage, avoids owing medicine or super medicine.
2. can be according to water quality it needs to be determined that sludge back flow quantity, it is low or high to avoid sludge back flow quantity, is conducive to bulky grain
Generation and energy saving.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figure 1, the coagulating sedimentation system based on zeta current potential and SS the Automatic Dosing returned sludge controlled, including water
Processing system, sludge recirculation system, coagulant medicine system and water quality detection control system；
Water treatment system contains mixing pit, flocculation basin and sedimentation basin；
Sludge recirculation system includes spoil disposal water conditioning tank and reflux pump；
Coagulant medicine system contains coagulant dosing system, and coagulant dosing system specifically refers to matching for coagulant
System, dosing system, contain the processes such as dissolution, dilution, pumping, the metering of coagulant；
Water quality monitoring control system includes No.1 transmissometer, No. two transmissometers, zeta potential instrument, No.1 SS instrument, No. two SS
No. three SS instrument of instrument；
Coagulant dosage point is on mixing pit water inlet pipe/canal；
Raw water turbidity sample is on mixing pit water inlet pipe/canal, before coagulant dosage point；
Mixing pit sets zeta potentiometer sampled point；
No.1 SS instrument sampled point is before flocculation basin water inlet pipe/canal, wadding body reflux point；
No. two SS instrument, No. two transmissometer sampled points are set to sedimentation basin outlet pipe/canal；
No. three SS instrument sampled points are set at spoil disposal water conditioning tank；
No.1 transmissometer, No. two transmissometers, zeta potential instrument, No.1 SS instrument, No. two SS instrument, No. three SS instrument and coagulant are thrown
Match system, reflux pump pass through signal wire respectively and connect with server.
The technique of the coagulating sedimentation system of Automatic Dosing returned sludge is established former according to previous operating condition or experimental data
The corresponding relationship curve of water turbidity and dosage；
When water inlet, No.1 transmissometer detects raw water turbidity, and server is bent according to the turbidity and dispensing magnitude relation pre-established
Line primary Calculation goes out dosage, and coagulant dosing system is according to calculated value dosing.
In a preferred embodiment, zeta potential instrument measures mixing pit water sample Zeta potential value in real time, and data are transmitted
To server.Server adjusts coagulant dosage according to Zeta potential value, and control processing water Zeta potential value is in [- 2, -5] model
In enclosing.
In a preferred embodiment, control rule is to increase by 5% coagulant when Zeta potential value is less than -5mV
Dosage.When Zeta potential value be greater than -2mV when, according to 2% coagulant dosage successively decrease medicine consumption, until water quality become it is excellent.
In a preferred embodiment, No.1 SS instrument measurement mixing pit is discharged SS value, and No. three SS instrument measurement spoil disposal water are adjusted
Pond SS value；Server is according to the SS value and current inflow of No.1 SS instrument and the measurement of No. three SS instrument, according to processing water target SS value
Adjust reflux pump discharge；
Q " --- sludge reflux flow
Q --- raw water flow
SS --- No.1 SS instrument data
SS ' --- target SS value
SS " --- No. two SS instrument data.
In a preferred embodiment, No. two SS instrument and No. two SS transmissometers detect sedimentation basin water quality situation, server root
Judge whether effluent quality of sedimentation tank is up to standard according to the data of No. two SS instrument and No. two SS transmissometers and (precipitates delivery turbidity control 1
It is considered as within the scope of~6NTU up to standard).
In a preferred embodiment, if effluent quality of sedimentation tank is not up to standard, warning is externally made.
During the present invention solves coagulation-settlement process processing water, lacks intermediate monitoring, cause coagulant dosage
It is inaccurate with the flat control of sludge reflux amount, cause dosage insufficient or waste.It is mixed based on raw water quality-precipitating water outlet Water-quality control
, there is staining effect lag in solidifying automatic medicament feeding system, lead to the consumption delay of adjust automatically medicine, influence to precipitate effluent quality.
The present invention solves the problems, such as that there are large time delay with precipitating water outlet water quality survey coagulation dosing amount according to the water quality of raw water.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in guarantor of the invention
Within the scope of shield.
Claims (7)
1. the coagulating sedimentation system based on zeta current potential and SS the Automatic Dosing returned sludge controlled, it is characterised in that:
Including water treatment system, sludge recirculation system, coagulant medicine system and water quality detection control system；
Water treatment system contains mixing pit, flocculation basin and sedimentation basin；
Sludge recirculation system includes spoil disposal water conditioning tank and reflux pump；
Coagulant medicine system contains coagulant dosing system；
Water quality monitoring control system includes No.1 transmissometer, No. two transmissometers, zeta potential instrument, No.1 SS instrument, No. two SS instrument, three
Number SS instrument；
Coagulant dosage point is on mixing pit water inlet pipe/canal；
Raw water turbidity sample is on mixing pit water inlet pipe/canal, before coagulant dosage point；
Mixing pit sets zeta potentiometer sampled point；
No.1 SS instrument sampled point is before flocculation basin water inlet pipe/canal, wadding body reflux point；
No. two SS instrument, No. two transmissometer sampled points are set to sedimentation basin outlet pipe/canal；
No. three SS instrument sampled points are set at spoil disposal water conditioning tank；
No.1 transmissometer, No. two transmissometers, zeta potential instrument, No.1 SS instrument, No. two SS instrument, No. three SS instrument and coagulant dosing system
System, reflux pump pass through signal wire respectively and connect with server.
2. the technique of the coagulating sedimentation system based on Automatic Dosing returned sludge described in claim 1, it is characterised in that: according to
The corresponding relationship curve of raw water turbidity and dosage is established toward operating condition or experimental data；
When water inlet, No.1 transmissometer detects raw water turbidity, and server is according at the beginning of the turbidity and dosage relation curve pre-established
Step calculates dosage, and coagulant dosing system is according to calculated value dosing.
3. the technique of the coagulating sedimentation system of Automatic Dosing returned sludge according to claim 2, it is characterised in that: Zeta electricity
Position instrument measures mixing pit water sample Zeta potential value in real time, sends data to server.Server is adjusted according to Zeta potential value
Coagulant dosage, control processing water Zeta potential value is in [- 2, -5] range.
4. the technique of the coagulating sedimentation system of Automatic Dosing returned sludge according to claim 3, it is characterised in that: control rule
It is then to increase by 5% coagulant dosage when Zeta potential value is less than -5mV.When Zeta potential value is greater than -2mV, press
According to 2% coagulant dosage successively decrease medicine consumption.
5. the technique of the coagulating sedimentation system of Automatic Dosing returned sludge according to claim 4, it is characterised in that: No.1 SS
Instrument measures mixing pit and is discharged SS value, and No. three SS instrument measure spoil disposal water conditioning tank SS value；Server is according to No.1 SS instrument and No. three SS
The SS value of instrument measurement and current inflow adjust reflux pump discharge according to processing water target SS value；
Q " --- sludge reflux flow
Q --- raw water flow
SS --- No.1 SS instrument data
SS ' --- target SS value
SS " --- No. two SS instrument data.
6. the technique of the coagulating sedimentation system of Automatic Dosing returned sludge according to claim 5, it is characterised in that: No. two SS
Instrument and No. two SS transmissometers detect sedimentation basin water quality situation, and server judges according to the data of No. two SS instrument and No. two SS transmissometers
Whether effluent quality of sedimentation tank is up to standard.
7. the technique of the coagulating sedimentation system of Automatic Dosing returned sludge according to claim 6, it is characterised in that: if heavy
Shallow lake pond effluent quality is not up to standard, externally makes warning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910650611.3A CN110330085A (en) | 2019-07-18 | 2019-07-18 | Coagulating sedimentation system and technique based on zeta current potential and SS control dosing returned sludge |
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| CN201910650611.3A CN110330085A (en) | 2019-07-18 | 2019-07-18 | Coagulating sedimentation system and technique based on zeta current potential and SS control dosing returned sludge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776072A (en) * | 2019-11-04 | 2020-02-11 | 甘肃省膜科学技术研究院有限公司 | Automatic control medicament recycling device for reducing dosage of water supply flocculant and coagulant aid |
| 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 |
| CN115140816A (en) * | 2022-05-27 | 2022-10-04 | 安徽普氏生态环境工程有限公司 | Dosing method, device and equipment for water purification |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776072A (en) * | 2019-11-04 | 2020-02-11 | 甘肃省膜科学技术研究院有限公司 | Automatic control medicament recycling device for reducing dosage of water supply flocculant and coagulant aid |
| 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 |
| CN115140816A (en) * | 2022-05-27 | 2022-10-04 | 安徽普氏生态环境工程有限公司 | Dosing method, device and equipment for water purification |
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Application publication date: 20191015 |