CN113428957A - Polyaluminum chloride adding method suitable for river water - Google Patents
Polyaluminum chloride adding method suitable for river water Download PDFInfo
- Publication number
- CN113428957A CN113428957A CN202110739812.8A CN202110739812A CN113428957A CN 113428957 A CN113428957 A CN 113428957A CN 202110739812 A CN202110739812 A CN 202110739812A CN 113428957 A CN113428957 A CN 113428957A
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- CN
- China
- Prior art keywords
- water
- polyaluminium chloride
- reference value
- turbidity
- per hour
- 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.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 110
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- -1 hydroxide ions Chemical class 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000000126 substance 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a polyaluminium chloride adding method suitable for river water, which is used for purifying water supply and drainage and relates to the technical field of water purification treatment; the method comprises the following steps: s1, sampling, and measuring the pH, turbidity and water temperature of source water; s2, calculating the adding amount of the polyaluminium chloride: according to the display of a raw water turbidity online instrument, selecting a reference value, polyaluminium chloride density, polyaluminium chloride concentration and water inflow, and calculating the dosage per hour; the specific calculation formula is as follows: the adding amount of the polyaluminium chloride is a reference value/the density of the polyaluminium chloride is the concentration of the polyaluminium chloride is the water inlet flow rate/1000, and the actual adding amount per hour is calculated through the reference value; s3, production and application: performing application addition according to the actual addition amount per hour calculated in the step S2 to purify the source water; the addition according to the addition method can ensure that the water quality meets the national standard and reduce the consumption of the polyaluminium chloride.
Description
Technical Field
The invention discloses a polyaluminium chloride adding method suitable for river water, which is used for purifying water supply and drainage and relates to the technical field of water purification treatment.
Background
PAC is polymeric alumina, polyaluminium for short, inorganic high molecular water treatment coagulant with large molecular weight and high charge is produced due to the bridging action of hydroxide ions and the polymerization action of polyvalent anions, the PAC chemical phosphorus removal mainly aims at phosphate, most orthophosphate is removed, and some organic phosphorus and polyphosphate are adsorbed and removed, so that the proportion of orthophosphate is further reduced, the phosphorus removal mechanism is divided into chemical precipitation, the adsorption action of precipitates and the adsorption action of complexes, and the standard of total phosphorus in the discharged water is ensured.
According to the turbidity change of different raw water of a Liuyang river, aiming at adopting 10 percent of raw liquid polyaluminium chloride (PAC), leading the pH value of the raw water to be within 7.5-8.5 and leading the raw water to be within four types of water, the polyaluminium chloride adding method suitable for river water is designed.
Disclosure of Invention
The invention aims to: the polyaluminium chloride adding method suitable for river water is provided, the turbidity stability of the effluent is guaranteed, and the medicament consumption is reduced.
The technical scheme adopted by the invention is as follows: a polyaluminium chloride adding method suitable for river water comprises the following steps:
s1, sampling, and measuring the pH, turbidity and water temperature of source water;
s2, calculating the adding amount of the polyaluminium chloride: according to the display of a raw water turbidity online instrument, selecting a reference value, polyaluminium chloride density, polyaluminium chloride concentration and water inflow, and calculating the dosage per hour; the specific calculation formula is as follows: the adding amount of the polyaluminium chloride is a reference value/the density of the polyaluminium chloride is the concentration of the polyaluminium chloride is the water inlet flow rate/1000, and the actual adding amount per hour is calculated through the reference value;
s3, production and application: and (4) performing application addition according to the actual addition amount per hour calculated in the step S2 to purify the source water.
The reference value is 7.6-11mg/L when the turbidity of the raw water is 5-15 ℃;
when the turbidity of raw water is 15-30 ℃, the reference value is 11-15 mg/L;
when the turbidity of raw water is 30-50 ℃, the reference value is 15-18 mg/L;
when the turbidity of raw water is 50-200 ℃, the reference value is 18-22 mg/L;
when the turbidity of the raw water is 200-500 ℃, the reference value is 22-28 mg/L;
when the turbidity of raw water is above 500, the reference value is 28-32 mg/L.
The polyaluminum chloride density was 1.24.
The concentration of the polyaluminium chloride adopts 10 percent of original liquid polyaluminium chloride.
And step S1, measuring the pH value of the source water, and controlling the pH value of the source water within the range of 7.5-8.5 through measurement and dosing treatment.
The working principle of the invention is as follows: in order to ensure the internal control standard of water quality, the turbidity before filtration needs to be controlled within 3NTU, the dosage per hour is measured and calculated by combining the density of the polyaluminium chloride and the concentration of the polyaluminium chloride according to the feedback value of an online instrument and a calculation formula, the qualified water quality is ensured to be accurate to 11ppm of the dosage per ton of water, the turbidity stability of the outlet water and the consumption of medicaments are ensured to be reduced, the polyaluminium chloride is added by the adding method in the last year, and the consumption of the polyaluminium chloride is reduced by 20-30 percent compared with the consumption of the polyaluminium chloride in thousands of tons of water in the last year.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention reduces the dosage of the polyaluminium chloride, reduces the cost of purified water, reduces the head loss, reduces the load of the filter and prolongs the filtering period of the filter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A polyaluminium chloride adding method suitable for river water comprises the following steps:
s1, sampling, and measuring the pH, turbidity and water temperature of source water;
s2, calculating the adding amount of the polyaluminium chloride: according to the display of a raw water turbidity online instrument, selecting a reference value, polyaluminium chloride density, polyaluminium chloride concentration and water inflow, and calculating the dosage per hour;
when the turbidity of raw water is 5-15 degrees, the reference value is 7.6-11 mg/L;
when the turbidity of raw water is 15-30 ℃, the reference value is 11-15 mg/L;
when the turbidity of raw water is 30-50 ℃, the reference value is 15-18 mg/L;
when the turbidity of raw water is 50-200 ℃, the reference value is 18-22 mg/L;
when the turbidity of the raw water is 200-500 ℃, the reference value is 22-28 mg/L;
when the turbidity of raw water is more than 500, the reference value is 28-32 mg/L;
the density of the polyaluminum chloride is 1.24;
the concentration of the polyaluminium chloride adopts 10 percent of original liquid polyaluminium chloride; when in calculation, the value is 1;
and step S1, measuring the pH value of the source water, and controlling the pH value of the source water within the range of 7.5-8.5 through measurement and dosing treatment.
The specific calculation formula is as follows: the adding amount of the polyaluminium chloride is a reference value/the density of the polyaluminium chloride is the concentration of the polyaluminium chloride is the water inlet flow rate/1000, and the actual adding amount per hour is calculated through the reference value;
s3, production and application: and (4) performing application addition according to the actual addition amount per hour calculated in the step S2 to purify the source water.
Example 1
S1, sampling: measuring the pH, turbidity and water temperature of source water; selecting Xiangjiang river water as source water, and measuring the pH to be 7.77, the turbidity to be 15NTU and the water temperature to be 20.2 ℃; water inflow 2000m3/h；
S2, calculating the adding amount of the polyaluminium chloride: turbidity 15NTU, reference 7.6-15mg/L, 11mg/L, according to the present example, and the formula:
the adding amount of the polyaluminium chloride is divided into a reference value, the density of the polyaluminium chloride is multiplied by the concentration of the polyaluminium chloride, the water inflow rate is divided into 1000, 11, 1.24, 1, 2000, 1000, 17.74L/h;
s3, production and application: and (4) performing application addition according to the actual addition amount of 17.74L/h in each hour calculated in the step S2 to purify the source water.
Example 2
S1, sampling: measuring the pH, turbidity and water temperature of source water; selecting Xiangjiang river water as source water, and measuring the pH to be 7.6, the turbidity to be 25NTU and the water temperature to be 20.2 ℃; water inflow 2000m3/h；
S2, calculating the adding amount of the polyaluminium chloride: turbidity was 25NTU, reference value was 11-15.1mg/L, reference value 15mg/L was used in this example, and the formula was fit:
the adding amount of the polyaluminium chloride is divided into a reference value, the density of the polyaluminium chloride is multiplied by the concentration of the polyaluminium chloride, the water inflow rate is divided into 1000, 15, 1.24, 1, 2000, 1000, 24.19L/h;
s3, production and application: and (4) performing application addition according to the actual addition amount per hour of 24.19L/h calculated in the step S2 to purify the source water.
Example 3
S1, sampling: measuring the pH, turbidity and water temperature of source water; selecting Xiangjiang river water as source water, and measuring the pH to be 7.9, the turbidity to be 35NTU and the water temperature to be 20.2 ℃; water inflow 2000m3/h；
S2, calculating the adding amount of the polyaluminium chloride: turbidity was 35NTU, reference value was 15-18mg/L, and the example takes reference value 18mg/L, and fits into the formula:
the adding amount of the polyaluminium chloride is a reference value, the density of the polyaluminium chloride is multiplied by the concentration of the polyaluminium chloride, the water inflow rate is multiplied by 1000, 18, 1.24, 1, 2000, 1000, 29.03L/h;
s3, production and application: and (4) performing application addition according to the actual addition amount per hour (29.03L/h) calculated in the step S2 to purify the source water.
Example 4
S1, sampling: measuring the pH, turbidity and water temperature of source water; selecting Xiangjiang river water as source water, and measuring the pH to be 7.9, the turbidity to be 100NTU and the water temperature to be 20.2 ℃; water inflow 2000m3/h；
S2, calculating the adding amount of the polyaluminium chloride: turbidity was 100NTU, reference value was 18-22mg/L, and this example was taken as reference value 22mg/L and fit into the formula:
the adding amount of the polyaluminium chloride is divided into a reference value, the density of the polyaluminium chloride is multiplied by the concentration of the polyaluminium chloride, the water inflow rate is divided into 1000, 22, 1.24, 1, 2000, 1000, 35.48L/h;
s3, production and application: and (4) performing application and addition according to the actual adding amount 35.48L/h of the water per hour calculated in the step S2 to purify the source water.
The consumption of the polyaluminium chloride is reduced by 20 to 30 percent compared with the consumption of thousands of tons of water polyaluminium chloride in the past year by adding the polyaluminium chloride by the adding method.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, and the scope of the present invention is defined by the appended claims, and all changes that come within the meaning and range of equivalency of the specification are therefore intended to be embraced therein.
Claims (5)
1. A polyaluminium chloride adding method suitable for river water is characterized by comprising the following steps:
s1, sampling, and measuring the pH value, turbidity and water temperature of source water;
s2, calculating the adding amount of the polyaluminium chloride: according to the display of a raw water turbidity online instrument, selecting a reference value, polyaluminium chloride density, polyaluminium chloride concentration and water inflow, and calculating the dosage per hour; the specific calculation formula is as follows: the adding amount of the polyaluminium chloride is a reference value/the density of the polyaluminium chloride is the concentration of the polyaluminium chloride is the water inlet flow rate/1000, and the actual adding amount per hour is calculated through the reference value;
s3, production and application: and (4) performing application addition according to the actual addition amount per hour calculated in the step S2 to purify the source water.
2. The polyaluminium chloride adding method suitable for river water as claimed in claim 1, wherein the reference value is 7.6-11mg/L when the turbidity of raw water is 5-15 degrees;
when the turbidity of raw water is 15-30 ℃, the reference value is 11-15 mg/L;
when the turbidity of raw water is 30-50 ℃, the reference value is 15-18 mg/L;
when the turbidity of raw water is 50-200 ℃, the reference value is 18-22 mg/L;
when the turbidity of the raw water is 200-500 ℃, the reference value is 22-28 mg/L;
when the turbidity of raw water is above 500, the reference value is 28-32 mg/L.
3. The method for adding polyaluminium chloride suitable for river water, as claimed in claim 1, wherein the polyaluminium chloride has a density of 1.24.
4. The method for adding polyaluminium chloride suitable for river water, as claimed in claim 1, wherein the polyaluminium chloride is 10% original polyaluminium chloride.
5. The method as claimed in claim 1, wherein the pH of the source water is measured in step S1 and controlled to be in the range of 7.5-8.5 by measurement and dosing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110739812.8A CN113428957A (en) | 2021-06-29 | 2021-06-29 | Polyaluminum chloride adding method suitable for river water |
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| CN202110739812.8A CN113428957A (en) | 2021-06-29 | 2021-06-29 | Polyaluminum chloride adding method suitable for river water |
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| CN113428957A true CN113428957A (en) | 2021-09-24 |
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| CN202110739812.8A Pending CN113428957A (en) | 2021-06-29 | 2021-06-29 | Polyaluminum chloride adding method suitable for river water |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000093990A (en) * | 1998-09-28 | 2000-04-04 | Mitsubishi Chemicals Corp | Treatment of sewage by activated sludge |
| CN1683254A (en) * | 2005-03-17 | 2005-10-19 | 哈尔滨工业大学 | Intelligent monitoring and control method for coagulation process based on multisource information fusion technology |
| JP2005329359A (en) * | 2004-05-21 | 2005-12-02 | Ffc Ltd | System for controlling injection of flocculant and system for controlling injection of alkali agent in water purification plant |
| DE102005028646A1 (en) * | 2005-06-20 | 2007-02-15 | Meyer, Heinz F. | Adjusting allowance quantity of suspension coagulant/flocculant, e.g. for industrial sludge drainage, requires measurement of turbidity values of suspension to derive relative control value for adjusting allowance quantity |
| CN102531131A (en) * | 2012-02-15 | 2012-07-04 | 泰山医学院 | System and method for controlling adding amount of flocculant |
| KR101197400B1 (en) * | 2011-10-25 | 2012-11-05 | 김규태 | System for optimizing coagulant dosage through water turbidity measurement |
| CN103011356A (en) * | 2012-08-15 | 2013-04-03 | 重庆水务集团股份有限公司 | Method for controlling automatic chemical dosing of high-turbidity water system |
| CN105301960A (en) * | 2015-10-10 | 2016-02-03 | 杨晓林 | Method for controlling input amount of tap water flocculating agent |
| CN106115881A (en) * | 2016-07-28 | 2016-11-16 | 阎小宁 | A kind of muddy water treatment agent full automatic feeding adding method |
| WO2021038222A1 (en) * | 2019-08-30 | 2021-03-04 | Environmental Monitoring Solutions Limited | Autonomous wastewater treatment system |
-
2021
- 2021-06-29 CN CN202110739812.8A patent/CN113428957A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000093990A (en) * | 1998-09-28 | 2000-04-04 | Mitsubishi Chemicals Corp | Treatment of sewage by activated sludge |
| JP2005329359A (en) * | 2004-05-21 | 2005-12-02 | Ffc Ltd | System for controlling injection of flocculant and system for controlling injection of alkali agent in water purification plant |
| CN1683254A (en) * | 2005-03-17 | 2005-10-19 | 哈尔滨工业大学 | Intelligent monitoring and control method for coagulation process based on multisource information fusion technology |
| DE102005028646A1 (en) * | 2005-06-20 | 2007-02-15 | Meyer, Heinz F. | Adjusting allowance quantity of suspension coagulant/flocculant, e.g. for industrial sludge drainage, requires measurement of turbidity values of suspension to derive relative control value for adjusting allowance quantity |
| KR101197400B1 (en) * | 2011-10-25 | 2012-11-05 | 김규태 | System for optimizing coagulant dosage through water turbidity measurement |
| CN102531131A (en) * | 2012-02-15 | 2012-07-04 | 泰山医学院 | System and method for controlling adding amount of flocculant |
| CN103011356A (en) * | 2012-08-15 | 2013-04-03 | 重庆水务集团股份有限公司 | Method for controlling automatic chemical dosing of high-turbidity water system |
| CN105301960A (en) * | 2015-10-10 | 2016-02-03 | 杨晓林 | Method for controlling input amount of tap water flocculating agent |
| CN106115881A (en) * | 2016-07-28 | 2016-11-16 | 阎小宁 | A kind of muddy water treatment agent full automatic feeding adding method |
| WO2021038222A1 (en) * | 2019-08-30 | 2021-03-04 | Environmental Monitoring Solutions Limited | Autonomous wastewater treatment system |
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Application publication date: 20210924 |