CN108435148A - A kind of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent and preparation method thereof - Google Patents
A kind of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent and preparation method thereof Download PDFInfo
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- CN108435148A CN108435148A CN201810642657.6A CN201810642657A CN108435148A CN 108435148 A CN108435148 A CN 108435148A CN 201810642657 A CN201810642657 A CN 201810642657A CN 108435148 A CN108435148 A CN 108435148A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/14—Diatomaceous earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/262—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention discloses a kind of cyclo-dextrin-modified polyacrylamide sewage water inorganic agents, it is made of the raw material of following weight parts：Acrylamide 60 70, dibenzoyl peroxide 1.5 2, cyclodextrin 46, calcium acetylacetonate 0.6 1, diatomite 90 100, trimethylolpropane 24, alum 12, sodium Diacetate 12, polyvinylpyrrolidone 9 10, stearic acid 23, the present invention is handled using cyclo-dextrin-modified, further improve the absorption stability of product handling system agent, the material Safety and Environmental Protection of the present invention is good, and comprehensive performance is superior.
Description
Technical field
The invention belongs to field of environment protection, and in particular to a kind of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent and its preparation
Method.
Background technology
China is that water resource is serious in short supply while being the country of water resource serious waste again, and with urbanization process
Soon, urban industry waste water and sanitary wastewater pollution problem getting worse, the processing for reinforcing sewage disposal especially industrial wastewater are aobvious
It obtains particularly important.According to statistics, the industrial wastewater that China is discharged every year is about 8 × 108m3, wherein not only containing cyanide, chlorophenol etc.
Hypertoxic ingredient, and contain the metal ions such as chromium, zinc, nickel.There are many processing method of waste water, mainly there is chemical precipitation method, electrolysis
Method and membrane processing method etc..Chinese patent CN201210230579.1 discloses a kind of hydroxamic acid modified polyacrylamide lotion flocculation
The preparation method of agent：Use acrylamide with acrylic acid for polymerized monomer, using white oil as continuous phase, water is dispersed phase, with fat
Sour isopropanol amide is that emulsifier obtains the high polymer of molecular weight using staged oxidation reduction initiating system；It is poly- by what is obtained
It closes object lotion to react with hydroxyl sulfate under strongly alkaline conditions, exist in the anti-degradation stabilizer of oiliness and aqueous anti-degradation stabilizer
Under, the modified polymer emulsion product of the oxygen-containing nitrolic acid group of high molecular weight is made, the product is as flocculant extensive use
In fields such as alumina producing, sewage disposals, performance is stable, molecular weight is high, additive amount is small, sinking speed is fast, supernatant clarification
It is transparent.But the invention is narrow as sewage-treating agent application range, some can also cause secondary pollution, the feature of environmental protection poor.
Invention content
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of cyclo-dextrin-modified polyacrylamides
Sewage-treating agent and preparation method thereof.
To achieve the above object, the present invention uses following technical scheme：
A kind of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent, it is made of the raw material of following weight parts：
Acrylamide 60-70, dibenzoyl peroxide 1.5-2, cyclodextrin 4-6, calcium acetylacetonate 0.6-1, diatomite 90-
100, trimethylolpropane 2-4, alum 1-2, sodium Diacetate 1-2, polyvinylpyrrolidone 9-10, stearic acid 2-3.
A kind of preparation method of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent, includes the following steps：
(1) dibenzoyl peroxide is taken, is added in the absolute ethyl alcohol of 7-10 times of its weight, stirs evenly, obtain initiator
Solution；
(2) calcium acetylacetonate is taken, is added in the absolute ethyl alcohol of 13-20 times of its weight, stirs evenly, increasing temperature is
55-60 DEG C, trimethylolpropane is added, insulated and stirred 1-2 hours obtains alcohol dispersion liquid；
(3) diatomite is taken, is added in above-mentioned alcohol dispersion liquid, it is 15-20 minutes ultrasonic, sodium Diacetate is added, stirs evenly,
Obtain diatomite dispersion liquid；
(4) acrylamide is taken, is added in the deionized water of 30-40 times of its weight, stirs evenly, with above-mentioned diatomite point
Dispersion liquid mixes, and is sent in reaction kettle, is passed through nitrogen, and it is 65-70 DEG C to adjust temperature of reaction kettle, insulated and stirred 4-5 hours, discharging
It is cooling, obtain diatomite modified poly solution；
(5) cyclodextrin is taken, is added in above-mentioned diatomite modified poly solution, it is 75-80 DEG C to increase temperature, is added remaining each
Raw material, it is 1-2 hours ultrasonic, filter, filter cake is washed, air drying to get the cyclo-dextrin-modified polyacrylamide sewage water at
Manage agent.
Advantages of the present invention：
Diatomite is distributed in the ethanol solution containing calcium acetylacetonate by the present invention first, then uses trihydroxy methyl third
Alkane processing, can effectively improve diatomaceous surface-active, then it be blended with acrylamide, with dibenzoyl peroxide
For monomer, it polymerize under nitrogen effect, obtains diatomite modified polymer, to effectively improve diatomite between polymer
Dispersion compatibility, then use cyclo-dextrin-modified handle, further improve the absorption stability of product handling system agent, the present invention
Material Safety and Environmental Protection it is good, comprehensive performance is superior.
Specific implementation mode
Embodiment 1
A kind of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent, it is made of the raw material of following weight parts：
Acrylamide 70, dibenzoyl peroxide 2, cyclodextrin 6, calcium acetylacetonate 1, diatomite 100, trimethylolpropane
4, alum 2, sodium Diacetate 2, polyvinylpyrrolidone 10, stearic acid 3.
A kind of preparation method of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent, includes the following steps：
(1) dibenzoyl peroxide is taken, is added in the absolute ethyl alcohol of 10 times of its weight, is stirred evenly, it is molten to obtain initiator
Liquid；
(2) calcium acetylacetonate is taken, is added in the absolute ethyl alcohol of 20 times of its weight, stirs evenly, it is 60 DEG C to increase temperature,
Trimethylolpropane is added, insulated and stirred 2 hours obtains alcohol dispersion liquid；
(3) diatomite is taken, is added in above-mentioned alcohol dispersion liquid, ultrasound 20 minutes is added sodium Diacetate, stirs evenly, obtain
Diatomite dispersion liquid；
(4) acrylamide is taken, is added in the deionized water of 40 times of its weight, stirs evenly, is disperseed with above-mentioned diatomite
Liquid mixes, and is sent in reaction kettle, is passed through nitrogen, and it is 70 DEG C to adjust temperature of reaction kettle, insulated and stirred 5 hours, and discharging cooling obtains
Diatomite modified poly solution；
(5) cyclodextrin is taken, is added in above-mentioned diatomite modified poly solution, it is 80 DEG C to increase temperature, and remaining each original is added
Material, ultrasound 2 hours are filtered, filter cake are washed, air drying is to get the cyclo-dextrin-modified polyacrylamide sewage water inorganic agent.
Embodiment 2
A kind of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent, it is made of the raw material of following weight parts：
Acrylamide 60, dibenzoyl peroxide 1.5, cyclodextrin 4, calcium acetylacetonate 0.6, diatomite 90, trihydroxy methyl
Propane 2, alum 1, sodium Diacetate 1, polyvinylpyrrolidone 9, stearic acid 2.
A kind of preparation method of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent, includes the following steps：
(1) dibenzoyl peroxide is taken, is added in the absolute ethyl alcohol of 7 times of its weight, is stirred evenly, it is molten to obtain initiator
Liquid；
(2) calcium acetylacetonate is taken, is added in the absolute ethyl alcohol of 13 times of its weight, stirs evenly, it is 55 DEG C to increase temperature,
Trimethylolpropane is added, insulated and stirred 1 hour obtains alcohol dispersion liquid；
(3) diatomite is taken, is added in above-mentioned alcohol dispersion liquid, it is 15- minutes ultrasonic, sodium Diacetate is added, stirs evenly, obtains
Diatomite dispersion liquid；
(4) acrylamide is taken, is added in the deionized water of 30 times of its weight, stirs evenly, is disperseed with above-mentioned diatomite
Liquid mixes, and is sent in reaction kettle, is passed through nitrogen, and it is 65 DEG C to adjust temperature of reaction kettle, insulated and stirred 4 hours, and discharging cooling obtains
Diatomite modified poly solution；
(5) cyclodextrin is taken, is added in above-mentioned diatomite modified poly solution, it is 75 DEG C to increase temperature, and remaining each original is added
Material, ultrasound 1 hour are filtered, filter cake are washed, air drying is to get the cyclo-dextrin-modified polyacrylamide sewage water inorganic agent.
Performance test：
Initial sewage：COD average values are 6033mg/l, turbidity 980NTU；
It is detected using method as defined in Hash standard of instruments, by the inorganic agent of the embodiment of the present invention 1, embodiment 2
After handling respectively, the COD average values of obtained water are respectively 130mg/l, 101mg/l, and turbidity is respectively 2.1NTU, 1.9NTU；
It is handled using commercially available common water pollution inorganic agent, is examined using method as defined in Hash standard of instruments
It surveys, the COD average values for obtaining water are 604mg/l, turbidity 7.4NTU；
As can be seen that the sewage-treating agent of the present invention has better treatment effect relative to traditional water treatment agent.
Claims (2)
1. a kind of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent, which is characterized in that it is the raw material group by following weight parts
At：
Acrylamide 60-70, dibenzoyl peroxide 1.5-2, cyclodextrin 4-6, calcium acetylacetonate 0.6-1, diatomite 90-100,
Trimethylolpropane 2-4, alum 1-2, sodium Diacetate 1-2, polyvinylpyrrolidone 9-10, stearic acid 2-3.
2. a kind of preparation method of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent as described in claim 1, which is characterized in that
Include the following steps：
(1) dibenzoyl peroxide is taken, is added in the absolute ethyl alcohol of 7-10 times of its weight, stirs evenly, obtain initiator solution；
(2) calcium acetylacetonate is taken, is added in the absolute ethyl alcohol of 13-20 times of its weight, stirs evenly, raising temperature is 55-60
DEG C, trimethylolpropane is added, insulated and stirred 1-2 hours obtains alcohol dispersion liquid；
(3) diatomite is taken, is added in above-mentioned alcohol dispersion liquid, it is 15-20 minutes ultrasonic, sodium Diacetate is added, stirs evenly, obtains silicon
Diatomaceous earth dispersion liquid；
(4) acrylamide is taken, is added in the deionized water of 30-40 times of its weight, stirs evenly, with above-mentioned diatomite dispersion liquid
Mixing, is sent in reaction kettle, is passed through nitrogen, and it is 65-70 DEG C to adjust temperature of reaction kettle, insulated and stirred 4-5 hours, and discharging is cold
But, diatomite modified poly solution is obtained；
(5) cyclodextrin is taken, is added in above-mentioned diatomite modified poly solution, it is 75-80 DEG C to increase temperature, and remaining each original is added
Material, it is 1-2 hours ultrasonic, it filters, filter cake is washed, air drying is handled to get the cyclo-dextrin-modified polyacrylamide sewage water
Agent.
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| CN201810642657.6A CN108435148A (en) | 2018-06-21 | 2018-06-21 | A kind of cyclo-dextrin-modified polyacrylamide sewage water inorganic agent and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437377A (en) * | 2018-12-05 | 2019-03-08 | 湖南凌辉环保新材料科技有限公司 | A kind of preparation method of sewage treatment flocculating agent |
| CN109809550A (en) * | 2019-02-28 | 2019-05-28 | 长沙埃比林环保科技有限公司 | A kind of preparation method of sewage treating material |
| CN113813929A (en) * | 2021-06-30 | 2021-12-21 | 盘锦富瑞达环保科技有限公司 | Preparation method of oil sludge treatment agent |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3420788A (en) * | 1964-04-29 | 1969-01-07 | Afico Sa | Inclusion resins of cyclodextrin and methods of use |
| EP1124761B1 (en) * | 1998-10-23 | 2004-04-28 | Zodiac Pool Care Inc. | Lanthanide halide water treatment compositions and methods |
| WO2004067453A1 (en) * | 2003-01-31 | 2004-08-12 | Idemitsu Kosan Co., Ltd. | Method of treating wastewater containing hardly decomposable harmful substances |
| US20060027493A1 (en) * | 2001-09-10 | 2006-02-09 | France Paul Amaat Raymond G | Process for treating lipophilic fluid |
| CN101816923A (en) * | 2010-04-07 | 2010-09-01 | 东北林业大学 | Method for preparing metal ion adsorbent |
| CN103819631A (en) * | 2014-02-28 | 2014-05-28 | 西南石油大学 | Oil suction high-molecular material based on host-guest interaction and preparation method |
| CN105536743A (en) * | 2016-02-29 | 2016-05-04 | 太原理工大学 | Preparation of heavy metal ion imprinted material adopting inverse emulsion and application of heavy metal ion imprinted material |
| CN105688845A (en) * | 2016-02-29 | 2016-06-22 | 太原理工大学 | Microwave-assisted inverse emulsion preparing method and application of heavy metal ion imprinting material |
| CN107376833A (en) * | 2017-08-30 | 2017-11-24 | 霍邱金木鱼农业科技有限公司 | A kind of preparation method of micropore composite inorganic material for air purification |
| CN107840395A (en) * | 2017-12-12 | 2018-03-27 | 成都育芽科技有限公司 | A kind of magnetic polyacrylamide is modified sewage-treating agent and preparation method thereof |
| CN107903409A (en) * | 2017-11-27 | 2018-04-13 | 湖南辰砾新材料有限公司 | A kind of photocatalyst composite hydrogel based on cyclodextrin and preparation method thereof |
-
2018
- 2018-06-21 CN CN201810642657.6A patent/CN108435148A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3420788A (en) * | 1964-04-29 | 1969-01-07 | Afico Sa | Inclusion resins of cyclodextrin and methods of use |
| EP1124761B1 (en) * | 1998-10-23 | 2004-04-28 | Zodiac Pool Care Inc. | Lanthanide halide water treatment compositions and methods |
| US20060027493A1 (en) * | 2001-09-10 | 2006-02-09 | France Paul Amaat Raymond G | Process for treating lipophilic fluid |
| WO2004067453A1 (en) * | 2003-01-31 | 2004-08-12 | Idemitsu Kosan Co., Ltd. | Method of treating wastewater containing hardly decomposable harmful substances |
| CN101816923A (en) * | 2010-04-07 | 2010-09-01 | 东北林业大学 | Method for preparing metal ion adsorbent |
| CN103819631A (en) * | 2014-02-28 | 2014-05-28 | 西南石油大学 | Oil suction high-molecular material based on host-guest interaction and preparation method |
| CN105536743A (en) * | 2016-02-29 | 2016-05-04 | 太原理工大学 | Preparation of heavy metal ion imprinted material adopting inverse emulsion and application of heavy metal ion imprinted material |
| CN105688845A (en) * | 2016-02-29 | 2016-06-22 | 太原理工大学 | Microwave-assisted inverse emulsion preparing method and application of heavy metal ion imprinting material |
| CN107376833A (en) * | 2017-08-30 | 2017-11-24 | 霍邱金木鱼农业科技有限公司 | A kind of preparation method of micropore composite inorganic material for air purification |
| CN107903409A (en) * | 2017-11-27 | 2018-04-13 | 湖南辰砾新材料有限公司 | A kind of photocatalyst composite hydrogel based on cyclodextrin and preparation method thereof |
| CN107840395A (en) * | 2017-12-12 | 2018-03-27 | 成都育芽科技有限公司 | A kind of magnetic polyacrylamide is modified sewage-treating agent and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张开诚: "《普通高等教育"十三五"规划教材 化学实验教程》", 28 February 2018, 华中科技大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437377A (en) * | 2018-12-05 | 2019-03-08 | 湖南凌辉环保新材料科技有限公司 | A kind of preparation method of sewage treatment flocculating agent |
| CN109809550A (en) * | 2019-02-28 | 2019-05-28 | 长沙埃比林环保科技有限公司 | A kind of preparation method of sewage treating material |
| CN113813929A (en) * | 2021-06-30 | 2021-12-21 | 盘锦富瑞达环保科技有限公司 | Preparation method of oil sludge treatment agent |
| CN113813929B (en) * | 2021-06-30 | 2023-10-24 | 盘锦富瑞达环保科技有限公司 | Preparation method of oil sludge treatment agent |
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