CN106882860A - A kind of preparation method of magnesia-starch Complex Flocculant - Google Patents
A kind of preparation method of magnesia-starch Complex Flocculant Download PDFInfo
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- CN106882860A CN106882860A CN201510945251.1A CN201510945251A CN106882860A CN 106882860 A CN106882860 A CN 106882860A CN 201510945251 A CN201510945251 A CN 201510945251A CN 106882860 A CN106882860 A CN 106882860A
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- starch
- preparation
- magnesia
- complex flocculant
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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
- C02F1/56—Macromolecular compounds
-
- 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
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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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)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of preparation method of magnesia-starch Complex Flocculant, specific preparation method is as follows：A certain amount of built agent starch is added in a certain amount of magnesium salt solution, a certain amount of basifier is subsequently adding, certain pH value is reached, certain hour is stirred, reaction curing certain hour obtains Magnesium Hydroxide-starch Complex Flocculant.Magnesium salts used in the present invention is MgSO4·7H2O、Mg(NO3)2·6H2One kind of O or its mixed solution；The magnesium salts is m (Mg with the quality proportioning of starch2+):M (starch)=1:80~1:100；The basifier used in the preparation process is CaO, and solution PH is controlled 11；The reaction mixing time is 10min~20min, and the curing time is 40~50h.The Magnesium Hydroxide-starch Complex Flocculant that the present invention is obtained, raw material is easy to get, simple to operate, and reaction is gentle, with application value higher.
Description
Technical field
The invention belongs to field of waste water treatment, more particularly to a kind of preparation of magnesia-starch Complex Flocculant
Method.
Background technology
Dyeing waste water is one of China's harmful, difficult industrial wastewater main at present, and major pollutants have
Dyestuff, slurry, auxiliary agent, fiber impurity, finish, soda acid and inorganic salts etc..It is characterized in wastewater flow rate
Greatly, water quality complexity, organic concentration high, difficult for biological degradation, color depth, change of water quality are fast and irregular etc.,
It is wherein especially the most serious with the pollution of dyestuff, even if its remaining dye component concentration is very low, will also result in
The reduction of water body light transmittance, causes the destruction of ecological environment.Treatment of dyeing wastewater difficulty is larger, conventional treatment
It is difficult to up to standard, advanced processes cost is too high, therefore seeks the simple cheap processing method particularly side of decolouring
Method turns into the major subjects of middle-size and small-size printing and dyeing mill.Recent domestic expands the research of magnesium salts, but generally
In the presence for the treatment of investment cost it is big, operating cost is high, treatment effect is not good, color removal is difficult the shortcomings of.
Organic polymer coargulator has that consumption is few, flocculation rate fast, influenceed small excellent by pH value and temperature
Point, but it is expensive, it is difficult to promote the use of, objectively require to develop new substitution product.Cause
This, the development of inorganic-organic composite macromolecular flocculant turns into focus, and it overcomes inorganic and has
The shortcoming of machine flocculant.Inorganic ions makes suspended particulate flocculate and precipitate, macromolecule organic cation
Height build bridge and promote flocculation adsorption speed again, therefore the purpose of Quick purifying can be reached.
Inorganic-organic composite flocculating agent be on the basis of inorganic polymer flocculant add organic complex agent and
Formed (such as aluminium polychloride, bodied ferric sulfate with polyacrylamide).Although polyacrylamide is a kind of
The built agent of function admirable, but acrylamide is nerve intoxicating agent, and nervous system is had damage,
The symptoms such as the powerless, ataxia of human body are shown after poisoning, the secondary pollution of water can be caused.It is natural organic
High polymer coagulant, as New Type Water Treatment Chemicals, is using organisms such as protein, polysaccharide, lignin
The natural organic high-molecular of secretion, is made up of chemical modification.Due to natural organic high-molecular have it is nontoxic
And can be degradable the characteristics of, once causing the attention of scientific research institution, but for many years can be real in this field
It is applied to industrial product simultaneously few.China's starch resource relatively enriches, and starch is natural polymer
Compound, has the advantages that nontoxic, pollution-free, inexpensive, selectivity is big, with starch replace polyacrylamide,
The organic polymer coargulator conduct such as Sodium Polyacrylate, polyoxyethylene, polyvinylamine, polyvinyl sulfonate
Built agent, with extensive Research Prospects.
The content of the invention
In order to improve the treatment effeciency of dyeing waste water, the wastewater treatment of safety non-toxic, non-secondary pollution is obtained
Agent, the present invention provides a kind of preparation method of magnesia-starch Complex Flocculant.
The purpose of the present invention is reached by following measures：A kind of magnesia-starch Complex Flocculant is provided
Preparation method：Appropriate built agent starch is added in a certain amount of magnesium salt solution, is subsequently adding certain
The basifier of amount, reaches certain pH value, stirs certain hour, and reaction curing certain hour is obtained
To Magnesium Hydroxide-starch inorganic-organic composite flocculating agent.
One preferred scheme is：Magnesium salts used is MgSO4·7H2O、Mg(NO3)2·6H2One kind of O
Or its mixed solution.
One preferred scheme is：The magnesium salts is m (Mg with the quality proportioning of starch2+):M (starch)=1:80~
1:100。
One preferred scheme is：Basifier used is CaO, and solution PH is controlled 11.
One preferred scheme is：Reaction mixing time is 10min~20min, and the curing time is 40~50h.
Beneficial effect：The present invention provides a kind of preparation method of magnesia-starch Complex Flocculant, the hydrogen-oxygen of gained
Change the Dye Wastewater Decolorization that magnesium-starch Complex Flocculant can be removed effectively in dyeing waste water, its decolorizing effect is than single
The good decolorizing effect of pure inorganic flocculating agent, and synergy due to composite flocculation agent and compound synergic
Effect, can save the consumption of flocculant, save cost of water treatment.In addition this new inorganic-organic is high
Molecule composite flocculation agent, raw material is easy to get, simple to operate, and reaction is gentle, with application value higher.
Specific embodiment
With reference to embodiment, the present invention is described in detail.
The present invention provides a kind of preparation method of magnesia-starch Complex Flocculant：It is molten in a certain amount of magnesium salts
Appropriate built agent starch is added in liquid, a certain amount of basifier is subsequently adding, certain PH is reached
Value, stirs certain hour, and reaction curing certain hour obtains Magnesium Hydroxide-starch inorganic-organic hybrid wadding
Solidifying agent.
Embodiment
3ml is pipetted, 800mg/l MgSO4 solution adds 0.1g starch, is well mixed, is gradually added into
Basifier CaO, makes solution pH value reach 11, after stirring 10min, places curing 48h, obtains hydrogen-oxygen
Change magnesium-starch inorganic-organic composite flocculating agent.Measure the hydrogen of addition 4ml in the waste water that 30ml contains dyestuff
Magnesia or Magnesium Hydroxide-starch Complex Flocculant, it is 11 that measure controls solution ph, and stirring reaction is quiet
Postpone, take supernatant liquor.20m in are centrifuged under the conditions of 3000r/m in, then take supernatant liquor, survey
Fixed its absorbance, can be found by calculating, multiple using Magnesium Hydroxide-starch inorganic-organic obtained in the present invention
Close flocculant its percent of decolourization to dyeing waste water and can reach 98%, decolorizing effect is splendid.
Above content is the further description done to the present invention with reference to optimal technical scheme, it is impossible to recognized
The specific implementation of fixed invention is only limitted to these explanations.To general technical staff of the technical field of the invention
For, on the premise of design of the invention is not departed from, simple deduction can also be made and replaced, all
Protection scope of the present invention should be considered as.
Claims (5)
1. a kind of preparation method of magnesia-starch Complex Flocculant, it is characterised in that：In a certain amount of magnesium
Appropriate built agent starch is added in salting liquid, a certain amount of basifier is subsequently adding, reached certain
PH value, stir certain hour, reaction curing certain hour, obtain Magnesium Hydroxide-starch it is inorganic-have
Machine composite flocculation agent.
2. the preparation method of a kind of magnesia-starch Complex Flocculant according to claim 1, it is special
Levy and be, the magnesium salts for being used is MgSO4·7H2O、Mg(NO3)2·6H2One kind of O or its mixing
Thing.
3. the preparation method of a kind of magnesia-starch Complex Flocculant according to claim 1, it is special
Levy and be, magnesium salts is m (Mg2+) with the quality proportioning of starch:M (starch)=1:80~1:100.
4. the preparation method of a kind of magnesia-starch Complex Flocculant according to claim 1, it is special
Levy and be, the basifier used in the preparation process is CaO, solution PH is controlled 11.
5. the preparation method of a kind of magnesia-starch Complex Flocculant according to claim 1, it is special
Levy and be, the reaction mixing time is 10min~20min, the curing time is 40~50h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510945251.1A CN106882860A (en) | 2015-12-16 | 2015-12-16 | A kind of preparation method of magnesia-starch Complex Flocculant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510945251.1A CN106882860A (en) | 2015-12-16 | 2015-12-16 | A kind of preparation method of magnesia-starch Complex Flocculant |
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| Publication Number | Publication Date |
|---|---|
| CN106882860A true CN106882860A (en) | 2017-06-23 |
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| CN201510945251.1A Pending CN106882860A (en) | 2015-12-16 | 2015-12-16 | A kind of preparation method of magnesia-starch Complex Flocculant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020143282A1 (en) * | 2019-01-10 | 2020-07-16 | 南京大学 | Composite flocculant for removing phosphorus and turbidity of waste water, preparation method therefor and use thereof |
| CN114797750A (en) * | 2022-04-22 | 2022-07-29 | 河北省科学院能源研究所 | Cross-linked starch-based composite adsorbent and preparation method and application thereof |
| CN115432908A (en) * | 2022-09-15 | 2022-12-06 | 北京尚水清源水处理技术有限公司 | Sludge dewatering agent and preparation method thereof |
-
2015
- 2015-12-16 CN CN201510945251.1A patent/CN106882860A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020143282A1 (en) * | 2019-01-10 | 2020-07-16 | 南京大学 | Composite flocculant for removing phosphorus and turbidity of waste water, preparation method therefor and use thereof |
| CN114797750A (en) * | 2022-04-22 | 2022-07-29 | 河北省科学院能源研究所 | Cross-linked starch-based composite adsorbent and preparation method and application thereof |
| CN114797750B (en) * | 2022-04-22 | 2023-10-13 | 河北省科学院能源研究所 | Crosslinked starch-based composite adsorbent and preparation method and application thereof |
| CN115432908A (en) * | 2022-09-15 | 2022-12-06 | 北京尚水清源水处理技术有限公司 | Sludge dewatering agent and preparation method thereof |
| CN115432908B (en) * | 2022-09-15 | 2023-12-26 | 北京尚水清源水处理技术有限公司 | Sludge dewatering agent and preparation method thereof |
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Application publication date: 20170623 |