CN107324463A - Multinuclear composite dephosphorizing agent and preparation method thereof - Google Patents
Multinuclear composite dephosphorizing agent and preparation method thereof Download PDFInfo
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- CN107324463A CN107324463A CN201710453403.5A CN201710453403A CN107324463A CN 107324463 A CN107324463 A CN 107324463A CN 201710453403 A CN201710453403 A CN 201710453403A CN 107324463 A CN107324463 A CN 107324463A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Activated Sludge Processes (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Multinuclear composite dephosphorizing agent of the present invention and preparation method thereof, sewage treatment area.Its purpose is to provide a kind of multinuclear composite dephosphorizing agent for being easy to storage to transport and use and preparation method thereof, the multinuclear composite dephosphorizing agent has the effect of flocculant and dephosphorization agent concurrently.Multinuclear composite dephosphorizing agent of the present invention includes according to mass fraction：10~30 parts of 3.2~6.4 parts of hydrochloric acid, 50~80 parts of aluminium polychloride, 80~120 parts of anhydrous calcium chloride, 70~90 parts of anhydrous magnesium chloride and triethanolamine.The multinuclear composite dephosphorizing agent usage amount of the present invention is few, easy to use, and flocculating effect is good, dephosphorization efficiency is high, on the clearance of total phosphorus, multinuclear composite dephosphorizing agent, and more than at least 70% 80% are higher by than aluminium polychloride.
Description
Technical field
It is more particularly to a kind of to be used to remove specific dissolved compound in decontaminated water the present invention relates to sewage treatment area
Composition and preparation method thereof.
Background technology
Due in recent years, phosphor in sewage it is exceeded gradually cause severe contamination to environment, be directed to this, country has
Pass department has carried out increasingly stricter control for the index of phosphor in sewage.Because many sewage treatment plants and some ecologies are adjusted
The water outlet total phosphorus at water center exceedes the one-level A class standards of national regulation, adds after traditional medicament, from long-term operation and processing cost
See, traditional medicament can not meet water factory's requirement.
The content of the invention
The present invention is that a kind of multinuclear for being easy to storage to transport and use provided to solve above technical problem is combined
Dephosphorization agent and preparation method thereof, the multinuclear composite dephosphorizing agent has the effect of flocculant and dephosphorization agent concurrently.
The present invention relates to a kind of multinuclear composite dephosphorizing agent, the dephosphorization agent includes according to mass fraction：Hydrochloric acid 3.2~6.4
Part, 50~80 parts of aluminium polychloride, 80~120 parts of anhydrous calcium chloride, 70~90 parts of anhydrous magnesium chloride and triethanolamine 10~30
Part.
Preferably, the dephosphorization agent includes according to mass fraction：4~5.6 parts of hydrochloric acid, 58~72 parts of aluminium polychloride, nothing
15~25 parts of 95~105 parts of water calcium chloride, 75~85 parts of anhydrous magnesium chloride and triethanolamine.
Preferably, the dephosphorization agent includes according to mass fraction：4.8 parts of hydrochloric acid, 65 parts of aluminium polychloride, anhydrous calcium chloride
20 parts of 100 parts, 80 parts of anhydrous magnesium chloride and triethanolamine.
Preferably, the dephosphorization agent also includes 650~1040 parts of water according to mass fraction.
The invention further relates to a kind of preparation method of multinuclear composite dephosphorizing agent, the preparation method comprises the following steps：
(1) calcium chloride is added to the water with magnesium chloride, stirring forms suspension, is the first solution,
(2) hydrochloric acid is instilled into the first solution, is the second solution to colourless transparent liquid is formed；
(3) the second solution is mixed with aluminium polychloride, is heated to 45~55 DEG C, be the 3rd solution；
(4) the 3rd solution is cooled to after room temperature, triethanolamine is added dropwise, be many of the present invention to stablizing solution is formed
Core composite dephosphorizing agent.
Preferably, 50 DEG C are heated in the step (3).
Multinuclear composite dephosphorizing agent of the present invention and preparation method thereof difference from prior art is：
1st, from transport, from the point of view of use, the compound dephosphorization agent of multinuclear of the invention is liquid condition, using above can be with
Directly use, it is not necessary to dilute, be easy to reduce cost of labor.
2nd, in terms of total phosphorus is handled, product of the invention can make water quality reaching standard under relatively small number of dosage, and its
He does not reach water quality requirement then by medicament under same dosage, is even more to be substantially better than other medicaments in terms of clearance
3rd, most important two indices in use, sedimentation time and chemical mud volume are considerably less than other medicaments
Advantage, shows during water factory runs, and the compound dephosphorization agent of multinuclear will not only bring operational inconvenience and two to producer
Secondary pollution, and intractability can be reduced in water factory is used for a long time and run, the operation cost of water factory is made indirectly to be reduced.
4th, multinuclear composite dephosphorizing agent of the present invention has the effect of flocculation, dephosphorization concurrently, and empirical tests are combined using the multinuclear of the present invention
Dephosphorization agent usage amount is few, easy to use, and flocculating effect is good, dephosphorization efficiency is high, on the clearance of total phosphorus, multinuclear composite dephosphorization
Agent, at least more than 70%-80% is higher by than aluminium polychloride.
Brief description of the drawings
Fig. 1 is flocculating effect figure of the multinuclear composite dephosphorizing agent of the present invention to the raw water in checking test 1；
Fig. 2 is to add the curve map of each medicament total phosphorus content in checking test 2.
Embodiment
Further is made to multinuclear composite dephosphorizing agent of the present invention and preparation method thereof by following examples and checking test
Explanation.
Embodiment 1
The preparation method of the multinuclear composite dephosphorizing agent of this implementation is carried out according to the following steps：
(1) calcium chloride is added to the water with magnesium chloride, stirring forms suspension, is the first solution,
(2) hydrochloric acid is instilled into the first solution, is the second solution to colourless transparent liquid is formed；
(3) the second solution is mixed with aluminium polychloride, is heated to 52 DEG C, be the 3rd solution；
(4) the 3rd solution is cooled to after room temperature, triethanolamine is added dropwise, formed stablizing solution, that is, the present embodiment is made
Multinuclear composite dephosphorizing agent.
The consumption of each raw material is as shown in table 1 in the present embodiment.
Embodiment 2
The preparation method of the multinuclear composite dephosphorizing agent of this implementation is carried out according to the following steps：
(1) calcium chloride is added to the water with magnesium chloride, stirring forms suspension, is the first solution,
(2) hydrochloric acid is instilled into the first solution, is the second solution to colourless transparent liquid is formed；
(3) the second solution is mixed with aluminium polychloride, is heated to 50 DEG C, be the 3rd solution；
(4) the 3rd solution is cooled to after room temperature, triethanolamine is added dropwise, formed stablizing solution, that is, the present embodiment is made
Multinuclear composite dephosphorizing agent.
The consumption of each raw material is as shown in table 1 in the present embodiment.
Embodiment 3
The preparation method of the multinuclear composite dephosphorizing agent of this implementation is carried out according to the following steps：
(1) calcium chloride is added to the water with magnesium chloride, stirring forms suspension, is the first solution,
(2) hydrochloric acid is instilled into the first solution, is the second solution to colourless transparent liquid is formed；
(3) the second solution is mixed with aluminium polychloride, is heated to 48 DEG C, be the 3rd solution；
(4) the 3rd solution is cooled to after room temperature, triethanolamine is added dropwise, formed stablizing solution, that is, the present embodiment is made
Multinuclear composite dephosphorizing agent.
The consumption of each raw material is as shown in table 1 in the present embodiment.
Embodiment 4
The preparation method of the multinuclear composite dephosphorizing agent of this implementation is carried out according to the following steps：
(1) calcium chloride is added to the water with magnesium chloride, stirring forms suspension, is the first solution,
(2) hydrochloric acid is instilled into the first solution, is the second solution to colourless transparent liquid is formed；
(3) the second solution is mixed with aluminium polychloride, is heated to 55 DEG C, be the 3rd solution；
(4) the 3rd solution is cooled to after room temperature, triethanolamine is added dropwise, formed stablizing solution, that is, the present embodiment is made
Multinuclear composite dephosphorizing agent.
The consumption of each raw material is as shown in table 1 in the present embodiment.
Embodiment 5
The preparation method of the multinuclear composite dephosphorizing agent of this implementation is carried out according to the following steps：
(1) calcium chloride is added to the water with magnesium chloride, stirring forms suspension, is the first solution,
(2) hydrochloric acid is instilled into the first solution, is the second solution to colourless transparent liquid is formed；
(3) the second solution is mixed with aluminium polychloride, is heated to 45 DEG C, be the 3rd solution；
(4) the 3rd solution is cooled to after room temperature, triethanolamine is added dropwise, formed stablizing solution, that is, the present embodiment is made
Multinuclear composite dephosphorizing agent.
The consumption of each raw material is as shown in table 1 in the present embodiment.
Consumption (the unit of each raw material in the embodiment 1-5 of table 1：g)
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Aluminium polychloride | 65 | 80 | 72 | 50 | 58 |
| Anhydrous calcium chloride | 95 | 80 | 120 | 100 | 105 |
| Anhydrous magnesium chloride | 70 | 90 | 85 | 80 | 75 |
| Triethanolamine | 15 | 30 | 20 | 25 | 10 |
To verify the effect of product of the present invention, following checking test is carried out using product made from embodiment 1-5.
Checking test 1
Test site：Jin Yang sewage treatment plant
1.1 experiment purpose
Understand after site technique, it is experiment raw water to take aerobic outlet water at tail end, with product made from above-described embodiment 1-5 ---
Multinuclear composite dephosphorizing agent does parallel contrast test with aluminium polychloride as Dephosphorization reagent, and this time lab beaker test objective exists
In：Under quantitative added amount of chemical, detect whether each medicament can be handled the aerobic outlet water at tail end of AAO to country-level A classes
Standard, if film can be gone out to water process to the class water of earth's surface four；Detect the water body change after dosing；And multinuclear of the present invention is obtained to answer
Close the comparative test result of dephosphorization agent and traditional medicament.
1.2 processs of the test and step：
Take appropriate raw water to detect its initial data, and record after detection the data obtained as a comparison according to basis.Wherein originally
Total phosphorus yield is basic in experiment is carried out according in ammonium molybdate spectrophotometric (GB11893-89).Raw water data record is table 2.
2 checking test Central Plains water number evidences of table
| Index name | Membrane cisterna phosphate | AAO phosphate |
| Index (mg/L) | 2.498 | 0.872 |
The physicochemical property contrast of product and control group of the present invention is as shown in table 3.
The physicochemical property contrast of the product of the present invention of table 3 and control group
| Title | Multinuclear composite dephosphorizing agent | Aluminium polychloride |
| PH value | 2.87 | 2.85 |
| Color | Bronzing | Khaki |
| Outward appearance | Liquid, no precipitation | Liquid, there is precipitation |
Raw water adds after quantitative pharmacy respectively, water quality index and water body change contrast：
Flocculation sediment process on Beaker Test, simulated production is carried out using the agitator of constant temperature magnetic force six.Take respectively
500mL film production water and the aerobic outlet water at tail end of AAO, is put into each beaker, and reference number.Added successively into each beaker
Multinuclear composite dephosphorizing agent：Stoste (is diluted ten times, added to 900mL raw waters by 40mg/L, 60mg/L, 80mg/L, 100mg/L
In, volume is respectively：0.36mL, 0.54mL, 0.72mL, 0.9mL), aluminium polychloride：100mg/L、200mg/L、400mg/L、
800mg/L, 1000mg/L (i.e. by the polymeric aluminum chlorides solution that mass fraction is 10%, are added into 900mL raw water, volume
Respectively：0.09mL, 0.18mL, 0.36mL, 0.72mL, 0.9mL) added as gradient dosage, to prevent from mixing up, respectively
Individual beaker labelling is indicated.
In order to realize parallel contrast test as far as possible, the rotating speed of unified adjustment agitator stirs 1~2min for 60r/min, so
After stand 30min, during this period, the size of flco, compactness, agglomerating speed, sedimentation in each beaker water body after observation dosing
Performance, the change of the suspension of supernatant simultaneously keeps a record.Flocculation Results are as shown in figure 1, after filtering, total phosphorus contains in detection filtered fluid
Amount.
1.3 experimental data
As shown in table 4, wherein the result of multinuclear composite dephosphorizing agent is respectively to produce in embodiment 1-5 for the result of above-mentioned checking test
The average value of product the data obtained.
Total phosphorus correction data table after the dosing of table 4
Note：The mass fraction that wherein aluminium polychloride is counted using aluminum oxide is 10%.
1.4 experiment conclusion
The handling process of clear water source Jin Yang sewage treatment plant is AAO+MBR, and processing water is 100,000 sides within AAO days, at MBR days
Reason water is 90,000 sides.Processing water source is sanitary sewage, and raw water total phosphorus is 2.498mg/l.Because biochemical dephosphorization efficiency is limited, therefore
Compensation process is used as using chemical dephosphorization.The film of the factory goes out water process standard for the class of surface water IV, i.e. total phosphorus content≤0.3mg/
L.AAO goes out the one-level A class standards that water process standard is national regulation, i.e. total phosphorus content≤0.3mg/L.
The factory had tested various chemical medicaments dephosphorization, fallen flat, above table is dephosphorization since found the factory
Chemicals are tested, and in MBR handling process, multinuclear composite dephosphorizing agent adds 100mg/L, and total phosphorus is that can reach the class of surface water IV,
Really accomplish efficient drop phosphorus, and aluminium polychloride adds 1000mg/L and is all not up to below 0.3mg/L, comes from clearance
See, multinuclear composite dephosphorizing agent is when adding 40mg/L, and clearance is 63.57%, aluminium polychloride dosage is in 20 times of multinuclears
In the case of composite dephosphorizing agent, clearance is only 60.44%, also the slightly below clearance of multinuclear composite dephosphorizing agent.In AAO processing
In technique, when multinuclear composite dephosphorizing agent adds 40mg/L, phosphate content is that can reach below 0.3mg/L, far beyond
The Effluent criteria of the factory, and aluminium polychloride, when need to add 400mg/L, phosphate can reach 0.437, just reach 0.5mg/
Below L, dosage is 10 times of multinuclear composite dephosphorizing agent.From clearance, in the case of identical dosage, multinuclear
Composite dephosphorizing agent is higher than aluminium polychloride by 88.08%.
Relative to other traditional medicaments, multinuclear composite dephosphorizing agent can make water up to standard under relatively low dosage, moreover it is possible to
When using medicament in running afterwards, dosage can suitably be reduced according to water factory's practical operation situation, so as to reduce
Medicament usage amount, has saved cost.On the clearance of total phosphorus, multinuclear composite dephosphorizing agent is higher by least than aluminium polychloride
More than 70%-80%, so in terms of sewage treatment plant's dephosphorization, product of the present invention has absolute predominance.
Checking test 2
Test site：Jin Yang sewage treatment plant
2.1 experiment purpose
Understanding after site technique, the water inlet of enchashment water factory is experiment raw water, with product of the present invention --- multinuclear is compound to be removed
Phosphorus agent, with traditional medicament bodied ferric sulfate, aluminium polychloride, PAFC, parallel contrast test is done as Dephosphorization reagent,
This time lab beaker test objective is：Under quantitative added amount of chemical, detect whether each medicament can be by the total of sewage
Phosphorus processing is arrived below country-level A index request；Detect the water body change after dosing；And the multinuclear for obtaining the present invention is combined
The comparative test result of type dephosphorization agent and traditional medicament.
2.2 test equipments and medicament：
722 visible spectrophotometers, nephelometer, six agitators, electronic balance, pH meter, 500mL beakers, 500mL amounts
Cylinder, 250 triangular flasks, 0.45 μm of filter membrane.
The medicine used in this experiment of table 5
| Nomenclature of drug | Rank |
| Sodium hydroxide | Analysis is pure |
| Potassium peroxydisulfate | Analysis is pure |
| Concentrated hydrochloric acid | Analysis is pure |
| The concentrated sulfuric acid | Analysis is pure |
| Ascorbic acid | Analysis is pure |
| Molybdate | Analysis is pure |
| Potassium dihydrogen phosphate | Analysis is pure |
2.3 analysis method
The equipment used in this experiment of table 6
| Index name | Analysis method |
| TP | The anti-reduction photometry of alkaline potassium per-sulfate digestion-molybdenum antimony |
| PH value | PH meter method |
| Turbidity | Transmissometer is determined |
| Colourity | Platinum-cobalt method |
| Chemical mud volume | Graduated cylinder is measured |
| The filterability of film | The water method that unit interval passes through film |
2.4 experimentations and step
Take appropriate raw water to detect its initial data, and record after detection the data obtained as a comparison according to basis.Wherein originally
Total phosphorus yield is basic in experiment is carried out according in ammonium molybdate spectrophotometric (GB11893-89), and pH value, turbidity are straight using instrument
Connect measure.Raw water data record is table 7.
7 checking test Central Plains water number evidences of table
| Index name | Total phosphorus | PH | Turbidity | Colourity |
| Index (mg/L) | 2.1 | 7~8 | 3.5 | 90 |
The physicochemical property contrast of product and control group of the present invention is as shown in table 8.
The physicochemical property contrast of the product of the present invention of table 8 and control group
| Title | Multinuclear composite dephosphorizing agent | Bodied ferric sulfate | Aluminium polychloride | PAFC |
| PH value | 2.87 | 2.54 | 2.85 | 2.93 |
| Color | Bronzing | Yellowish-brown | Khaki | Yellow |
| Outward appearance | Liquid, no precipitation | Liquid, microprecipitation | Liquid, there is precipitation | Liquid, microprecipitation |
Raw water adds after quantitative pharmacy respectively, water quality index and water body change contrast：
Flocculation sediment process on Beaker Test, simulated production is carried out using the agitator of constant temperature magnetic force six.Take respectively
500mL film production water and the aerobic outlet water at tail end of AAO, is put into each beaker, and reference number.Added successively into each beaker
Multinuclear composite dephosphorizing agent：Stoste (is diluted ten times, added to 900mL raw waters by 40mg/L, 60mg/L, 80mg/L, 100mg/L
In, volume is respectively：0.36mL, 0.54mL, 0.72mL, 0.9mL), aluminium polychloride：100mg/L、200mg/L、400mg/L、
800mg/L, 1000mg/L (i.e. by the polymeric aluminum chlorides solution that mass fraction is 10%, are added into 900mL raw water, volume
Respectively：0.09mL, 0.18mL, 0.36mL, 0.72mL, 0.9mL) added as gradient dosage, to prevent from mixing up, respectively
Individual beaker labelling is indicated.
In order to realize parallel contrast test as far as possible, the rotating speed of unified adjustment agitator stirs 1~2min for 60r/min, so
After stand 30min, during this period, the size of flco, compactness, agglomerating speed, sedimentation in each beaker water body after observation dosing
Performance, the change of the suspension of supernatant simultaneously keeps a record.Stand after 30min, flocculation terminates, and takes the supernatant in each beaker,
Then its total phosphorus, colourity and turbidity are detected, as a result as shown in table 8, the curve map of total phosphorus content is shown in Fig. 2.
2.5 experimental data
As shown in table 9, wherein the result of multinuclear composite dephosphorizing agent is respectively to produce in embodiment 1-5 for the result of above-mentioned checking test
The average value of product the data obtained.
Total phosphorus correction data table after the dosing of table 9
Note：Polyaluminum sulfate iron content is that mass fraction is 11% in terms of full iron, quality of the aluminium polychloride in terms of aluminum oxide
Fraction is 10%, and PAFC is that mass fraction is 2% in terms of full iron, and the mass fraction counted using aluminum oxide is 8%.
Can be drawn by data above, the compound dephosphorization agent of multinuclear of the invention, dosage be 80mg/L when, water it is total
Phosphorus value already close to national regulation one-level A class standards, when dosage be 100mg/L when, it is up to standard beyond desired value.Relative to
Other traditional medicaments, the compound dephosphorization agent of multinuclear can make water up to standard under relatively low dosage, moreover it is possible to operation afterwards
During when using medicament, dosage can suitably be reduced according to water factory's practical operation situation, so as to reduce medicament usage amount,
Cost is saved.On the clearance of total phosphorus, the compound dephosphorization agent of multinuclear is higher by least more than 10% than other medicaments, so
In terms of the ecological water factory's dephosphorization in Shunyi, product of the present invention has absolute predominance.
Water factory uses pharmaceutical quantities daily：
Consumption per day is set to T, units/kg；
Day processing water is set to V, unit m3；
Dosage is set to X, unit mg/l；
Then consumption per day calculation formula is；
T=V × X/1000.
2.6 experiment conclusion
2.6.1 from the point of view of transport, use, the compound dephosphorization agent of multinuclear is liquid condition, above can be direct using
Use, it is not necessary to dilute, be easy to reduce cost of labor.
2.6.2 in terms of total phosphorus is handled, water quality reaching standard can be made under relatively small number of dosage, and other medicaments are same
Do not reach water quality requirement then under the dosage of sample, be even more to be substantially better than other medicaments in terms of clearance.
2.6.3 most important two indices in use, sedimentation time and chemical mud volume are considerably less than other medicines
The advantage of agent, shows during water factory runs, the compound dephosphorization agent of multinuclear will not only bring operational inconvenience to producer
And secondary pollution, and intractability can be reduced in water factory is used for a long time and run, the operation cost of water factory is made indirectly to be reduced.
In summary, the compound dephosphorization agent of multinuclear of the invention, no matter in water quality treatment index exceeding standard effect, or
Overall to be used for a long time in cost, other medicaments are by clear superiority in all relatively this time testing.
Although the foregoing describing the embodiment of the present invention, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
On the premise of principle and essence from the present invention, various changes or modifications can be made to these embodiments, but these are changed
Protection scope of the present invention is each fallen within modification.
Claims (6)
1. a kind of multinuclear composite dephosphorizing agent, it is characterised in that：The dephosphorization agent includes according to mass fraction：Hydrochloric acid 3.2~6.4
Part, 50~80 parts of aluminium polychloride, 80~120 parts of anhydrous calcium chloride, 70~90 parts of anhydrous magnesium chloride and triethanolamine 10~30
Part.
2. multinuclear composite dephosphorizing agent according to claim 1, it is characterised in that：The dephosphorization agent is according to mass fraction bag
Include：4~5.6 parts of hydrochloric acid, 58~72 parts of aluminium polychloride, 95~105 parts of anhydrous calcium chloride, 75~85 parts of anhydrous magnesium chloride and three
15~25 parts of monoethanolamine.
3. multinuclear composite dephosphorizing agent according to claim 2, it is characterised in that：The dephosphorization agent is according to mass fraction bag
Include：20 parts of 4.8 parts of hydrochloric acid, 65 parts of aluminium polychloride, 100 parts of anhydrous calcium chloride, 80 parts of anhydrous magnesium chloride and triethanolamine.
4. multinuclear composite dephosphorizing agent according to claim 3, it is characterised in that：The dephosphorization agent is according to mass fraction
Also include 650~1040 parts of water.
5. a kind of preparation method of multinuclear composite dephosphorizing agent, it is characterised in that：The preparation method comprises the following steps：
(1) calcium chloride is added to the water with magnesium chloride, stirring forms suspension, is the first solution,
(2) hydrochloric acid is instilled into the first solution, is the second solution to colourless transparent liquid is formed；
(3) the second solution is mixed with aluminium polychloride, is heated to 45~55 DEG C, be the 3rd solution；
(4) the 3rd solution is cooled to after room temperature, triethanolamine is added dropwise, be that multinuclear of the invention is answered to stablizing solution is formed
Close dephosphorization agent.
6. the preparation method of multinuclear composite dephosphorizing agent according to claim 5, it is characterised in that：Add in the step (3)
Heat is to 50 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109081412A (en) * | 2018-09-10 | 2018-12-25 | 南京工业大学 | Preparation method and application of polyaluminium magnesium chloride coagulant |
| CN110877923A (en) * | 2018-09-06 | 2020-03-13 | 中国石油天然气股份有限公司 | Composite flocculant for treating refinery sewage and treatment method of refinery sewage |
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