CN109678233A - A kind of sewage dephosphorization efficient flocculant and preparation method thereof - Google Patents
A kind of sewage dephosphorization efficient flocculant and preparation method thereof Download PDFInfo
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- CN109678233A CN109678233A CN201811626514.2A CN201811626514A CN109678233A CN 109678233 A CN109678233 A CN 109678233A CN 201811626514 A CN201811626514 A CN 201811626514A CN 109678233 A CN109678233 A CN 109678233A
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- sewage
- efficient flocculant
- dephosphorization efficient
- dephosphorization
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Classifications
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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
-
- 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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
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- Chemical & Material Sciences (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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of sewage dephosphorization efficient flocculants comprising: 10-20 parts of ferric trichloride, 22-30 parts of ferrous sulfate, 5-8 parts of triethanolamine, 5-10 parts of hydrogen peroxide, 40-50 parts of deionized water, the sum of parts by weight of above-mentioned each component are 100.Sewage provided by the invention is adaptable with dephosphorization efficient flocculant, it is applied widely, phosphor-removing effect is superior, hydrolysis generate a large amount of hydroxide wadding bodies precipitating, have very big specific surface area and adsorption capacity, to the negatively charged phosphoric acid contained in sewage very, hydrogen phosphate, dihydrogen phosphate have very strong suction-operated, it can be by adsorbing, building bridge, make coacervation of colloid in sewage together, ensure that dephosphorization efficiency, and properties of product are stablized.
Description
Technical field
The invention belongs to water-treatment technology fields, and in particular to a kind of sewage dephosphorization efficient flocculant and its preparation side
Method.
Background technique
Phosphorus is necessary element in organism, while being the main reason for leading to water eutrophication, to answer water body again
Some purification functions are lost, and the production and living environment of the mankind are influenced.Phosphorus From Wastewater content height can cause serious pollution, therefore
It is handled before discharging, reduces the content of Phosphorus From Wastewater.
In recent years, stepping up due to water standard further controls the discharge of pollutant, national by " town sewage
Treatment plant's pollutant emission standard " primary standard in (GB 18918-2002) is further refined as level-one A and level-one B, strictly
Discharge standard the dephosphorization of sewage treatment plant certainly will be put forward higher requirements, carry out chemical dephosphorization on the basis of biological phosphate-eliminating
Work.
Common dephosphorization agent is mainly made of aluminium polychloride single component in the market, is had a single function, mainly with polymeric form
And nonionic exists very much, insufficient with phosphorus-containing compound effect in sewage, phosphor-removing effect is poor, and effect is unstable, and dosage is big,
Higher cost.
Summary of the invention
In consideration of it, the invention proposes a kind of sewage dephosphorization efficient flocculants, it is intended to solve existing dephosphorization agent dephosphorization
The problem of effect is poor, and effect is unstable, higher cost.
On one side, the invention proposes a kind of sewage dephosphorization efficient flocculant, the component including following parts by weight meter:
10-20 parts of ferric trichloride, 22-30 parts of ferrous sulfate, 5-8 parts of triethanolamine, 5-10 parts of hydrogen peroxide, 40-50 parts of deionized water, on
Stating the sum of parts by weight of each component is 100.
Further, above-mentioned sewage dephosphorization efficient flocculant, the component including following parts by weight meter: ferric trichloride 15
Part, 25 parts of ferrous sulfate, 5 parts of triethanolamine, 10 parts of hydrogen peroxide, 45 parts of deionized water.
On the other hand, the invention also provides a kind of sewage preparation methods of dephosphorization efficient flocculant, including walk as follows
It is rapid:
S1: reaction kettle is rinsed well, closes baiting valve, and the water of one third is added into reaction kettle, opens stirring, so
Ferric trichloride is added in backward reaction kettle, stirs and evenly mixs.
S2: after temperature drops to 25-30 DEG C, with hydrochloric acid tune pH value, make solution ph between 2-3, add hydrogen peroxide, make
Ferrous iron in its ferrous sulfate is converted to ferric iron, to ferrous iron less than 0.5% completely after reaction.
S3: being finally added triethanolamine thereto again, stirs 30min, until solution is clarified, solution temperature is down to 25-35 DEG C
Stop stirring afterwards.
S4: baiting valve is opened, stable dephosphorization efficient flocculant is generated.
Further, in preparation method of the above-mentioned sewage with dephosphorization efficient flocculant, each group in the bio-organic fertilizer
Point parts by weight are as follows: 10-20 parts of ferric trichloride, 22-30 parts of ferrous sulfate, 5-8 parts of triethanolamine, 5-10 parts of hydrogen peroxide, go from
Sub- water 40-50 parts, the sum of parts by weight of above-mentioned each component are 100.
Further, in preparation method of the above-mentioned sewage with dephosphorization efficient flocculant, each group in the bio-organic fertilizer
The parts by weight divided are as follows: 15 parts of ferric trichloride, 25 parts of ferrous sulfate, 5 parts of triethanolamine, 10 parts of hydrogen peroxide, 45 parts of deionized water.
Further, in preparation method of the above-mentioned sewage with dephosphorization efficient flocculant, the hydrogen peroxide and ferrous sulfate are complete
The time of full response is 30-60 minutes.
Further, in preparation method of the above-mentioned sewage with dephosphorization efficient flocculant, the mode of the solution cooling is cold
But water cools down.
Compared with prior art, the beneficial effects of the present invention are sewage provided by the invention dephosphorization efficient flocculants
In, ferric trichloride is a kind of covalent compound, can generate insoluble compound with the dissolved phosphorus ions binding in sewage, remove
Phosphorus is more efficient.Ferric trichloride generates a variety of hydrolysates with after hydrate alkalinity effect in water, is combined into afterwards
Fe(OH)3.These hydrolysates have many positive charges, so the negative electrical charge on colloidal particles can be neutralized, and with it is negatively charged
The particulate matter of lotus and three iron hydroxides combine.Due to this binding ability, so there is flocculation ability and form alumen ustum.Tri-chlorination
Hydrogen sulfide (H in iron and water2S), phosphate (PO4), arsenate (AsO4) and hydrate alkalinity (OH) generation chemistry is instead
Sediment should be generated.It can by waste water heavy metal and sulfide precipitation come out, formed its iron oxide alumen ustum can inhale again
It is difficult to the substance degraded in attached water, is the high efficiency low cost flocculant of municipal sewage and Industrial Wastewater Treatment.
Hydrogen peroxide is that there is stronger permeability and oxidation to make containing there are two the liquid of oxygen atom in a kind of each hydrone
With, in the case where pH value is sufficiently low, under the catalytic action of ferrous ion, hydrogen peroxide will decompose generation hydroxyl,
To cause a series of chain reflection.
Ferrous sulfate is mainly used as flocculant: flocculating effect is good, and sinking speed is fast, mud granule is big, sludge volume is small
And it is closely knit, except color effect is good, be highly suitable as the processing of textile wastes such as printing and dyeing, washing, nontoxic and beneficial organism is grown,
It is extremely suitable for use in the subsequent sewage disposal system for having biochemical processing process, without changing original technique, cheap；Also have
There is heavy-metal ion removal, deoil, dephosphorization, the functions such as sterilization.
Especially, the present invention is complexing agent energy and Al using triethanolamine3+,Fe3+,Sn4+Plasma complexing, forms and stablizes
Fe (OH)3, enhance phosphor-removing effect.
Further, sewage of the present invention is adaptable with dephosphorization efficient flocculant, applied widely, and phosphor-removing effect is excellent
More, a large amount of hydroxide wadding bodies precipitating for hydrolyzing generation, has very big specific surface area and adsorption capacity, to what is contained in sewage
Negatively charged phosphoric acid very, hydrogen phosphate, dihydrogen phosphate have very strong suction-operated, sewage can be made by adsorbing, building bridge
In coacervation of colloid together, ensure that dephosphorization efficiency.Ferric trichloride in dephosphorization efficient flocculant is a kind of covalent compound,
Insoluble compound can be generated with the dissolved phosphorus ions binding in sewage, dephosphorization flocculating effect is good, and settling velocity is fast, sludge
Particle is big, and closely knit, has good decoloring ability, can remove removing heavy metals, and properties of product are stablized.
Specific embodiment
Below with reference to specific embodiment, the technical scheme of the present invention will be further described, but claimed range is simultaneously
It is not limited to this.
Embodiment one
Sewage dephosphorization efficient flocculant in the present embodiment, each component including following parts by weight meter: 15 parts of ferric trichloride,
22 parts of ferrous sulfate, 8 parts of triethanolamine, 5 parts of hydrogen peroxide, 50 parts of deionized water, the sum of parts by weight of above-mentioned each component are 100.
Embodiment two
Sewage dephosphorization efficient flocculant in the present embodiment, each component including following parts by weight meter: 18 parts of ferric trichloride,
24 parts of ferrous sulfate, 5 parts of triethanolamine, 5 parts of hydrogen peroxide, 48 parts of deionized water, the sum of parts by weight of above-mentioned each component are 100.
Embodiment three
Sewage dephosphorization efficient flocculant in the present embodiment, each component including following parts by weight meter: ferric trichloride 18
Part, 26 parts of ferrous sulfate, 6 parts of triethanolamine, 10 parts of hydrogen peroxide, 40 parts of deionized water, the sum of the parts by weight of above-mentioned each component are
100。
Example IV
Sewage dephosphorization efficient flocculant in the present embodiment, each component including following parts by weight meter: ferric trichloride 10
Part, 30 parts of ferrous sulfate, 8 parts of triethanolamine, 5 parts of hydrogen peroxide, 47 parts of deionized water, the sum of the parts by weight of above-mentioned each component are
100。
Embodiment five
Sewage dephosphorization efficient flocculant in the present embodiment, each component including following parts by weight meter: ferric trichloride 20
Part, 22 parts of ferrous sulfate, 7 parts of triethanolamine, 10 parts of hydrogen peroxide, 41 parts of deionized water, the sum of the parts by weight of above-mentioned each component are
100。
In the various embodiments described above, sewage dephosphorization efficient flocculant preparation method the following steps are included:
S1: reaction kettle is rinsed well, closes baiting valve, and the water of one third is added into reaction kettle, opens stirring, so
Ferric trichloride is added in backward reaction kettle, stirs and evenly mixs.
S2: after temperature drops to 25-30 DEG C, with hydrochloric acid tune pH value, make solution ph between 2-3, add hydrogen peroxide, make
Ferrous iron in its ferrous sulfate is converted to ferric iron, to ferrous iron less than 0.5% completely after reaction.
S3: being finally added triethanolamine thereto again, stirs 30mi n, until solution is clarified, opens cooling water, temperature is down to
Stop stirring after 25-35 DEG C.
S4: baiting valve is opened, stable dephosphorization efficient flocculant is generated.
In preparation method of the above-mentioned sewage with dephosphorization efficient flocculant, the hydrogen peroxide and ferrous sulfate react completely when
Between be 30-60 minute, the mode of solution cooling is cooling water temperature, raising rate of temperature fall, quickly to generate stabilization
Dephosphorization efficient flocculant.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of sewage dephosphorization efficient flocculant, which is characterized in that the component including following parts by weight meter: ferric trichloride 10-
20 parts, 22-30 parts of ferrous sulfate, 5-8 parts of triethanolamine, 5-10 parts of hydrogen peroxide, 40-50 parts of deionized water, above-mentioned each component
The sum of parts by weight are 100.
2. sewage according to claim 1 dephosphorization efficient flocculant, which is characterized in that the group including following parts by weight meter
Point: 15 parts of ferric trichloride, 25 parts of ferrous sulfate, 5 parts of triethanolamine, 10 parts of hydrogen peroxide, 45 parts of deionized water.
3. a kind of sewage preparation method of dephosphorization efficient flocculant, which comprises the steps of:
S1: reaction kettle is rinsed well, close baiting valve, into reaction kettle be added one third water, open stirring, then to
Ferric trichloride is added in reaction kettle, stirs and evenly mixs；
S2: after temperature drops to 25-30 DEG C, with hydrochloric acid tune pH value, make solution ph between 2-3, add hydrogen peroxide, make its sulphur
Ferrous iron in sour ferrous iron is converted to ferric iron, to ferrous iron less than 0.5% completely after reaction；
S3: being finally added triethanolamine thereto again, stirs 30min, until solution is clarified, opens cooling water, temperature is down to 25-35
Stop stirring after DEG C；
S4: baiting valve is opened, stable dephosphorization efficient flocculant is generated.
4. the sewage according to claim 3 preparation method of dephosphorization efficient flocculant, which is characterized in that the sewage is used
The parts by weight of each component in dephosphorization efficient flocculant are as follows: 10-20 parts of ferric trichloride, 22-30 parts of ferrous sulfate, triethanolamine 5-8
Part, 5-10 parts of hydrogen peroxide, 40-50 parts of deionized water, the sum of parts by weight of above-mentioned each component are 100.
5. the sewage according to claim 3 preparation method of dephosphorization efficient flocculant, which is characterized in that the sewage is used
The parts by weight of each component in dephosphorization efficient flocculant are as follows: 15 parts of ferric trichloride, 25 parts of ferrous sulfate, 5 parts of triethanolamine, hydrogen peroxide
10 parts, 45 parts of deionized water.
6. the sewage according to claim 3 preparation method of dephosphorization efficient flocculant, which is characterized in that in above-mentioned steps
In S2, the hydrogen peroxide is 30-60 minutes with the time that ferrous sulfate reacts completely.
7. the sewage according to claim 3 preparation method of dephosphorization efficient flocculant, which is characterized in that in above-mentioned steps
In S3, the mode of the solution cooling is cooling water temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811626514.2A CN109678233A (en) | 2018-12-28 | 2018-12-28 | A kind of sewage dephosphorization efficient flocculant and preparation method thereof |
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| CN201811626514.2A CN109678233A (en) | 2018-12-28 | 2018-12-28 | A kind of sewage dephosphorization efficient flocculant and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362384A (en) * | 2020-04-13 | 2020-07-03 | 无锡市天嘉科技有限公司 | High-efficiency flocculant and preparation method thereof |
| CN114314782A (en) * | 2021-12-21 | 2022-04-12 | 西安铭鼎盛源环保科技有限公司 | Preparation method of novel efficient phosphorus removal agent for sewage treatment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362384A (en) * | 2020-04-13 | 2020-07-03 | 无锡市天嘉科技有限公司 | High-efficiency flocculant and preparation method thereof |
| CN114314782A (en) * | 2021-12-21 | 2022-04-12 | 西安铭鼎盛源环保科技有限公司 | Preparation method of novel efficient phosphorus removal agent for sewage treatment |
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