CN108002503A - Composite flocculant and preparation method thereof - Google Patents
Composite flocculant and preparation method thereof Download PDFInfo
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- CN108002503A CN108002503A CN201810028540.9A CN201810028540A CN108002503A CN 108002503 A CN108002503 A CN 108002503A CN 201810028540 A CN201810028540 A CN 201810028540A CN 108002503 A CN108002503 A CN 108002503A
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- chitosan
- composite flocculant
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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
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- 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
-
- 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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
- C02F2209/14—NH3-N
Abstract
The invention discloses a kind of composite flocculant and preparation method thereof.The preparation method of this composite flocculant, using aluminium chloride, iron chloride, magnesium sulfate, chitosan, diatomite and polyacrylamide as primary raw material, using water as solvent, then preparation, diatomaceous modification, the preparation of cationic PAM solution of chitosan solution are passed through, each component is mixed to get composite flocculant.Reaction condition of the present invention is gentle, and technique is simple, easy to operate；The composite flocculant being prepared significant effect in textile printing and dyeing wastewater is handled, the flco body of generation is big and structure is closely knit, and sinking speed is fast, and mud amount of sinking is few；It is preferable for the ammonia nitrogen in waste water, total phosphorus, decolorizing effect and CODcr removal effects.
Description
Technical field
The present invention relates to water treatment flocculant technical field, especially a kind of composite flocculant and preparation method thereof.
Background technology
An important sources of the dyeing waste water as industrial wastewater discharge, there is data to suggest that, China's dyeing daily may be used
Give off 3 × 106~4 × 106m3Dyeing waste water.Due to dyeing waste water water is big, organic concentration is high, inorganic salt content is high,
The features such as complicated, biodegradability are poor, decoloration is difficult, processing pay attention to day by day of the printing and dyeing enterprise to waste water.In each of water process
In item technique, it is one of most presently the most common and crucial sport technique segment to carry out coagulation using flocculant.Coagulation effect it is good
It is bad directly to decide the processing procedure of water process follow-up process, while also directly affect final outflow water quality and cost.And
The quality of coagulation effect is critically depend on the selection of flocculant, therefore the research and development for new and effective flocculant are constantly in very
Consequence.
In recent ten years, flocculant develops very rapid in China, and species is various.At present, flocculant according to chemical composition may be used
It is divided into four major class of inorganic, organic, microorganism and composite flocculation agent.Due to the complicated component in dyeing waste water and index of correlation concentration
It is higher, its index of correlation can not have fully been reduced using traditional single inorganic or organic flocculant to reach national row
Standard is put, or needs substantial amounts of traditional single flocculant to be reduced to water outlet and meets relevant criterion, this is often
Mean to add the production cost of the sewage disposal of enterprise.Therefore, exploring a kind of novel efficient complex flocculant has necessarily
Practical guided significance.Composite flocculation agent, as the term suggests just refer to two or more the warp of the material with coagulation
Cross processing to merge, generate a kind of new flocculant.Composite flocculation agent often fully utilizes the high charge density of inorganic flocculating agent
Acted on the absorption crane span structure of organic flocculant, while enhancing both synergistic effects, improving flocculating effect, and compensate for two
Existing deficiency when person is used alone.And composite flocculation agent is when in use, it is only necessary to carries out a step and adds, compared to normal at present
The two step dosing methods seen, save man power and material.In recent years, various composite flocculants are researched and developed, become water process medicine
One of important directions of agent exploitation.
The content of the invention
The technical problem to be solved in the present invention is：Overcome deficiency in the prior art, there is provided a kind of composite flocculant and
Its preparation method.In order to realize the preparation of above-mentioned flocculant, the present invention is with aluminium salt, molysite, magnesium salts, chitosan solution, diatomite
It is raw material with cationic PAM solution, each component mixes according to a certain percentage, you can obtains the flocculant.
The technical solution adopted by the present invention to solve the technical problems is：A kind of preparation method of composite flocculant, tool
Body comprises the following steps：
(1), the preparation of chitosan solution, dissolves chitosan, shell in chitosan solution with the acetum of mass fraction 1%
The mass fraction of glycan is 0.5%~2%；
(2), diatomaceous modification, toasts 2h under 105 DEG C of high temperature by natural diatomaceous earth and is modified processing；
(3), the preparation of cationic PAM solution, cationic PAM are dissolved in distilled water according to 0.5 ‰~1 ‰ dissolution rate
In；
(4), raw material is weighed according to parts by weight：4~7 parts of aluminium chloride, 1~2 part of iron chloride, 0.5~1 part of magnesium sulfate, shell gather
10~20 parts of sugar juice, 3~8 parts of diatomite, 50~80 parts of cationic PAM solution；
(5), above-mentioned each component is slowly added to successively in cationic PAM solution, and be stirred continuously to being completely dissolved, its
Middle aluminium chloride, iron chloride and magnesium sulfate are by the way of solid directly adds, and controlling reaction temperature is at 50~60 DEG C, stirring speed
Spend for 200r/min, reaction time 30min, the preparation of composite flocculant is then completed after static activation 1h.
Further, in the step (3) cationic PAM use molecular weight for 12,000,000 cationic PAM.
A kind of composite flocculant prepared according to above-mentioned preparation method.
The application method of composite flocculant is in the present invention：2ml composite flocculants are added in per 500ml waste water, first
1min is quickly stirred with the rotating speed of 300r/min, then 10min is mixed slowly with the rotating speed of 100r/min, stands 20min.Standing
When observe flco size, sinking speed and heavy mud amount, Aspirate supernatant measure percent of decolourization, COD after the completion of standingcrRemoval rate, ammonia
Nitrogen removal efficiency and total tp removal rate, percent of decolourization is up to more than 92%, CODcrRemoval rate up to more than 73%, ammonia nitrogen removal frank up to 60% with
On, total tp removal rate is up to more than 96%.
The beneficial effects of the invention are as follows：Reaction condition of the present invention is gentle, and technique is simple, easy to operate；What is be prepared answers
Mould assembly flocculant significant effect in textile printing and dyeing wastewater is handled, the flco body of generation is big and structure is closely knit, and sinking speed is fast,
Heavy mud amount is few；It is preferable for the ammonia nitrogen in waste water, total phosphorus, decolorizing effect and CODcr removal effects.
Embodiment
Presently in connection with preferred embodiment, the present invention is further illustrated.
Embodiment 1
A kind of preparation method of composite flocculant, comprises the following steps：
(1), the preparation of chitosan solution, dissolves chitosan, in chitosan solution with the acetum that mass fraction is 1%
The mass concentration of chitosan is 0.5%；
(2), diatomaceous modification, toasts 2h under 105 DEG C of high temperature by natural diatomaceous earth and is modified processing；
(3), the preparation of cationic PAM solution, using molecular weight be 12,000,000 cationic PAM according to 0.5 ‰ dissolving
Rate is dissolved in distilled water；
(4), raw material is weighed according to parts by weight：4 parts of aluminium chloride, 1 part of iron chloride, 0.5 part of magnesium sulfate, chitosan solution 10
Part, 3 parts of diatomite, 50 parts of cationic PAM solution；
(5), above-mentioned each component is slowly added to successively in cationic PAM solution, and be stirred continuously to being completely dissolved, its
By the way of solid directly adds, chitosan uses and adds chitosan-acetic acid solution for middle aluminium chloride, iron chloride and magnesium sulfate
Mode, while controlling reaction temperature, in the range of 50 DEG C, mixing speed 200r/min is reaction time 30min, then static
The preparation of composite flocculant is completed after activation 1h.
Embodiment 2
A kind of preparation method of composite flocculant, comprises the following steps：
(1), the preparation of chitosan solution, dissolves chitosan, in chitosan solution with the acetum that mass fraction is 1%
The mass concentration of chitosan is 2%；
(2), diatomaceous modification, toasts 2h under 105 DEG C of high temperature by natural diatomaceous earth and is modified processing；
(3), the preparation of cationic PAM solution, using molecular weight be 12,000,000 cationic PAM according to 1 ‰ dissolution rate
It is dissolved in distilled water；
(4), raw material is weighed according to parts by weight：7 parts of aluminium chloride, 2 parts of iron chloride, 1 part of magnesium sulfate, 20 parts of chitosan solution,
8 parts of diatomite, 80 parts of cationic PAM solution；
(5), above-mentioned each component is slowly added to successively in cationic PAM solution, and be stirred continuously to being completely dissolved, its
By the way of solid directly adds, chitosan uses and adds chitosan-acetic acid solution for middle aluminium chloride, iron chloride and magnesium sulfate
Mode, while controlling reaction temperature, in the range of 55 DEG C, mixing speed 200r/min is reaction time 30min, then static
The preparation of composite flocculant is completed after activation 1h.
Embodiment 3
A kind of preparation method of composite flocculant, comprises the following steps：
(1), the preparation of chitosan solution, dissolves chitosan, in chitosan solution with the acetum that mass fraction is 1%
The mass concentration of chitosan is 1%；
(2), diatomaceous modification, toasts 2h under 105 DEG C of high temperature by natural diatomaceous earth and is modified processing；
(3), the preparation of cationic PAM solution, using molecular weight be 12,000,000 cationic PAM according to 0.5 ‰ dissolving
Rate is dissolved in distilled water；
(4), raw material is weighed according to parts by weight：6 parts of aluminium chloride, 1.5 parts of iron chloride, 0.7 part of magnesium sulfate, chitosan solution 15
Part, 6 parts of diatomite, 65 parts of cationic PAM solution；
(5), above-mentioned each component is slowly added to successively in cationic PAM solution, and be stirred continuously to being completely dissolved, its
By the way of solid directly adds, chitosan uses and adds chitosan-acetic acid solution for middle aluminium chloride, iron chloride and magnesium sulfate
Mode, while controlling reaction temperature, in the range of 60 DEG C, mixing speed 200r/min is reaction time 30min, then static
The preparation of composite flocculant is completed after activation 1h.
In order to prove beneficial effects of the present invention, above-described embodiment 1-3 composite flocculants prepared are weaved with Mr. Yu
The treatment of dyeing wastewater of factory, takes 3 parts of dyeing waste waters, will according to the ratio that 2ml composite flocculants are added in 500ml waste water
In the composite flocculant input waste water of the present invention, 1min is quickly first stirred with the rotating speed of 300r/min, then with 100r/min's
Rotating speed mixes slowly 10min, static 20min.Flco size, sinking speed and heavy mud amount are observed when standing, after the completion of standing
Aspirate supernatant measure percent of decolourization, CODcrRemoval rate, ammonia nitrogen removal frank and total tp removal rate, test result are as shown in table 1.Wherein
Percent of decolourization is using the measure of reactive blue stimulated dye wastewater progress decolorizing effect, CODcrThe assay method of removal rate is using titration
Method, the assay method of ammonia nitrogen removal frank use Na's reagent, and the assay method of total tp removal rate uses National Standard Method.
Treatment effect of the 1 each embodiment of table for dyeing waste water
As can be seen from Table 1, the present invention prepare composite flocculant processing dyeing waste water when, its percent of decolourization up to 92% with
On, CODcr removal rates are up to more than 73%, and ammonia nitrogen removal frank is up to more than 60%, and total tp removal rate is up to more than 96%, the flco of generation
Body is big and structure is closely knit, and sinking speed is fast, and heavy mud amount is few, and dyeing waste water complies fully with after processing《Integrated wastewater discharge standard》
Discharge standard in GB8978-2002.
In conclusion reaction condition of the present invention is gentle, technique is simple, easy to operate；The composite flocculant being prepared
The significant effect in textile printing and dyeing wastewater is handled, the flco body of generation is big and structure is closely knit, and sinking speed is fast, and mud amount of sinking is few；
It is preferable for the ammonia nitrogen in waste water, total phosphorus, decolorizing effect and CODcr removal effects.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and be carried out, and it is not intended to limit the scope of the present invention, it is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all cover within the scope of the present invention.
Claims (3)
- A kind of 1. preparation method of composite flocculant, it is characterised in that：Specifically include following steps：(1), the preparation of chitosan solution, dissolves chitosan, chitosan in chitosan solution with the acetum of mass fraction 1% Mass fraction be 0.5%~2%；(2), diatomaceous modification, toasts 2h under 105 DEG C of high temperature by natural diatomaceous earth and is modified processing；(3), the preparation of cationic PAM solution, cationic PAM are dissolved in distilled water according to 0.5 ‰~1 ‰ dissolution rate；(4), raw material is weighed according to parts by weight：4~7 parts of aluminium chloride, 1~2 part of iron chloride, 0.5~1 part of magnesium sulfate, chitosan are molten 10~20 parts of liquid, 3~8 parts of diatomite, 50~80 parts of cationic PAM solution；(5), above-mentioned each component is slowly added to successively in cationic PAM solution, and be stirred continuously to being completely dissolved, wherein chlorine Change aluminium, iron chloride and magnesium sulfate by the way of solid directly adds, controlling reaction temperature is in 50~60 DEG C, mixing speed 200r/min, reaction time 30min, then complete the preparation of composite flocculant after static activation 1h.
- 2. the preparation method of composite flocculant according to claim 1, it is characterised in that：Step (3) middle-jiao yang, function of the spleen and stomach from Sub- PAM use molecular weight for 12,000,000 cationic PAM.
- A kind of 3. composite flocculant prepared according to claim 1-2 any one of them method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810028540.9A CN108002503A (en) | 2018-01-12 | 2018-01-12 | Composite flocculant and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810028540.9A CN108002503A (en) | 2018-01-12 | 2018-01-12 | Composite flocculant and preparation method thereof |
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| CN108002503A true CN108002503A (en) | 2018-05-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645418A (en) * | 2020-12-01 | 2021-04-13 | 安徽鸿昌糖业科技有限公司 | Composite flocculant for purifying stevioside |
| CN117566882A (en) * | 2024-01-16 | 2024-02-20 | 新乡化纤股份有限公司 | Method for removing impurities in ionic liquid aqueous solution |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121742A (en) * | 2012-11-12 | 2013-05-29 | 武汉斯隆电气有限公司 | Inorganic-modified chitosan composite type polymeric flocculant |
| WO2017158581A1 (en) * | 2016-03-17 | 2017-09-21 | Gavish-Galilee Bio Applications Ltd. | Method for production of potable water |
| CN107364921A (en) * | 2017-09-11 | 2017-11-21 | 杨帅 | Composite environment-friendly type COD removers and its preparation method and application |
-
2018
- 2018-01-12 CN CN201810028540.9A patent/CN108002503A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121742A (en) * | 2012-11-12 | 2013-05-29 | 武汉斯隆电气有限公司 | Inorganic-modified chitosan composite type polymeric flocculant |
| WO2017158581A1 (en) * | 2016-03-17 | 2017-09-21 | Gavish-Galilee Bio Applications Ltd. | Method for production of potable water |
| CN107364921A (en) * | 2017-09-11 | 2017-11-21 | 杨帅 | Composite environment-friendly type COD removers and its preparation method and application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645418A (en) * | 2020-12-01 | 2021-04-13 | 安徽鸿昌糖业科技有限公司 | Composite flocculant for purifying stevioside |
| CN117566882A (en) * | 2024-01-16 | 2024-02-20 | 新乡化纤股份有限公司 | Method for removing impurities in ionic liquid aqueous solution |
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Application publication date: 20180508 |
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