CN104261651A - Polyacrylamide sludge dehydrating agent and preparation method thereof - Google Patents
Polyacrylamide sludge dehydrating agent and preparation method thereof Download PDFInfo
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- CN104261651A CN104261651A CN201410481056.3A CN201410481056A CN104261651A CN 104261651 A CN104261651 A CN 104261651A CN 201410481056 A CN201410481056 A CN 201410481056A CN 104261651 A CN104261651 A CN 104261651A
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- parts
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- dehydrating agent
- sludge dehydrating
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical 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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Abstract
The invention relates to a polyacrylamide sludge dehydrating agent and a preparation method thereof, belonging to the technical field of dehydrating agents. The polyacrylamide sludge dehydrating agent comprises the following components in parts by weight: 40-50 parts of acrylamide, 4-8 parts of vinyl acetate, 3-5 parts of dimethyldiallylammonium chloride, 2-4 parts of oxirene, 2-4 parts of maleic anhydride, 4-5 parts of tall oil acid, 2-4 parts of acrylic acid, 4-9 parts of inorganic base, 2-3 parts of accelerant, 2-3 parts of chelating agent, 2-4 parts of surfactant and 60-80 parts of water. No poisonous raw materials are used in the production process of the polyacrylamide sludge dehydrating agent provided by the invention, and the prepared dehydrating agent is excellent in performance.
Description
Technical field
The present invention relates to a kind of polyacrylamide sludge dehydrating agent and preparation method thereof, belong to dewatering agent technical field.
Background technology
Along with the development of Environmental Protection in China cause, strict requirement be it is also proposed to the improvement of the three wastes.For this reason, the first heavy mud produced in wastewater treatment process and residue property mud and in the precipitation process of coagulation of feedwater the mud that produces all should deal carefully with, otherwise secondary public hazards will be caused, the general water ratio of these mud higher (95-98%), mostly needs to carry out concentrating, dewatering in treating processes.The Treatment stations of current China, carries out except sludge dehydrating and drying except some sanitary sewage fields have employed drying bed, most of sewage farm (comprising Industrial Waste Water Treatments field), all unprocessed and drain with current to produced mud.Because natural drying bed floor space is large, sanitary condition is poor, if mismanagement or a run of wet weather also can cause secondary pollution, therefore domestic many sewage farms, all prepares to adopt mechanical dehydration method to dewater to mud.Pharmaceutical chemicals in the past for sludge dewatering is mostly inorganic coagulant and coagulant aids etc.Along with the development of chemical industry, the kind of polymeric flocculant constantly expands, and output is also in continuous increase.And compared with inorganic coagulant, polymeric flocculant has in sludge dewatering that consumption is low, effective, applied widely, sludge output is little and the mud that produces such as easily to dispose at many advantages.Some dewatering machine then must use polymeric flocculant could obtain satisfied treatment effect; Some dehydration, thickening equipment, after employing polymeric flocculant, greatly can be accelerated dehydration, settling velocity, thus raise the efficiency, and reduce equipment volume.
CN1247838A discloses a kind of a kind of cationic high-molecular flocculant for sewage disposal aspect; it adopts the air in reactor by after nitrogen replacement; to complete reaction under nitrogen protection; and reaction raw materials formaldehyde, dimethylamine adopt the mode that adds of segmentation, technological process is loaded down with trivial details.CN1769221A discloses with positively charged ion or non-ionic polyacrylamide, formaldehyde, organic amine, fresh water as raw material, be aided with sequestrant, reaction promotor, terminator, regulate its pH value by mineral alkali, the obtained amine methyl polyacrylamide of reaction is at a certain temperature the colloid aqueous solution of main component.Adopt many organic performance compositions in the method, be unfavorable for environment protection, and sludge treatment poor effect.
Summary of the invention
The object of this invention is to provide a kind of polyacrylamide sludge dehydrating agent with good dewatering.
Technical scheme:
Polyacrylamide sludge dehydrating agent, includes following component by weight: acrylamide 40 ~ 50 parts, vinyl acetate between to for plastic 4 ~ 8 parts, dimethyl diallyl ammonium chloride 3 ~ 5 parts, oxyethylene 2 ~ 4 parts, MALEIC ANHYDRIDE 2 ~ 4 parts, tall oil acid 4 ~ 5 parts, 2 ~ 4 parts, vinylformic acid, mineral alkali 4 ~ 9 parts, promotor 2 ~ 3 parts, sequestrant 2 ~ 3 parts, 2 ~ 4 parts, tensio-active agent, 60 ~ 80 parts, water.
Mineral alkali is sodium hydroxide or potassium hydroxide.
Promotor is persulfuric acid acid ammonium.
Sequestrant is ethylenediamine tetraacetic acid (EDTA).
Tensio-active agent is Sodium dodecylbenzene sulfonate.
Present invention also offers the preparation method of above-mentioned polyacrylamide sludge dehydrating agent, comprise the steps: to add water, promotor, sequestrant, mineral alkali, tensio-active agent in a kettle., stir, be warming up to 50 ~ 60 DEG C, add vinyl acetate between to for plastic, dimethyl diallyl ammonium chloride, oxyethylene, MALEIC ANHYDRIDE, tall oil acid, vinylformic acid, acrylamide again, stir, be incubated 4 ~ 8 hours, let cool, to obtain final product.
beneficial effect
Polyacrylamide sludge dehydrating agent production process provided by the invention does not use toxic raw materials, obtained dewatering agent excellent performance.
Embodiment
embodiment 1
The preparation method of polyacrylamide sludge dehydrating agent, first takes following raw material: acrylamide 40Kg, vinyl acetate between to for plastic 4Kg, dimethyl diallyl ammonium chloride 3Kg, oxyethylene 2Kg, MALEIC ANHYDRIDE 2Kg, tall oil acid 4Kg, vinylformic acid 2Kg, mineral alkali 4Kg, promotor 2Kg, sequestrant 2Kg, tensio-active agent 2Kg, water 60Kg; Mineral alkali is sodium hydroxide or potassium hydroxide; Promotor is persulfuric acid acid ammonium; Sequestrant is ethylenediamine tetraacetic acid (EDTA); Tensio-active agent is Sodium dodecylbenzene sulfonate.Add water, promotor, sequestrant, mineral alkali, tensio-active agent in a kettle., stir, be warming up to 50 DEG C, add vinyl acetate between to for plastic, dimethyl diallyl ammonium chloride, oxyethylene, MALEIC ANHYDRIDE, tall oil acid, vinylformic acid, acrylamide again, stir, be incubated 4 hours, let cool, to obtain final product.
embodiment 2
The preparation method of polyacrylamide sludge dehydrating agent, first takes following raw material: acrylamide 40 ~ 50Kg, vinyl acetate between to for plastic 8Kg, dimethyl diallyl ammonium chloride 5Kg, oxyethylene 4Kg, MALEIC ANHYDRIDE 4Kg, tall oil acid 5Kg, vinylformic acid 4Kg, mineral alkali 9Kg, promotor 3Kg, sequestrant 3Kg, tensio-active agent 4Kg, water 80Kg; Mineral alkali is sodium hydroxide or potassium hydroxide; Promotor is persulfuric acid acid ammonium; Sequestrant is ethylenediamine tetraacetic acid (EDTA); Tensio-active agent is Sodium dodecylbenzene sulfonate.Add water, promotor, sequestrant, mineral alkali, tensio-active agent in a kettle., stir, be warming up to 60 DEG C, add vinyl acetate between to for plastic, dimethyl diallyl ammonium chloride, oxyethylene, MALEIC ANHYDRIDE, tall oil acid, vinylformic acid, acrylamide again, stir, be incubated 8 hours, let cool, to obtain final product.
embodiment 3
The preparation method of polyacrylamide sludge dehydrating agent, first takes following raw material: acrylamide 45Kg, vinyl acetate between to for plastic 6Kg, dimethyl diallyl ammonium chloride 4Kg, oxyethylene 3Kg, MALEIC ANHYDRIDE 3Kg, tall oil acid 4Kg, vinylformic acid 3Kg, mineral alkali 5Kg, promotor 2Kg, sequestrant 3Kg, tensio-active agent 3Kg, water 70Kg; Mineral alkali is sodium hydroxide or potassium hydroxide; Promotor is persulfuric acid acid ammonium; Sequestrant is ethylenediamine tetraacetic acid (EDTA); Tensio-active agent is Sodium dodecylbenzene sulfonate.Add water, promotor, sequestrant, mineral alkali, tensio-active agent in a kettle., stir, be warming up to 55 DEG C, add vinyl acetate between to for plastic, dimethyl diallyl ammonium chloride, oxyethylene, MALEIC ANHYDRIDE, tall oil acid, vinylformic acid, acrylamide again, stir, be incubated 6 hours, let cool, to obtain final product.
reference examples 1
Be with the difference of embodiment 3: do not add oxyethylene.
The preparation method of polyacrylamide sludge dehydrating agent, first takes following raw material: acrylamide 45Kg, vinyl acetate between to for plastic 6Kg, dimethyl diallyl ammonium chloride 4Kg, MALEIC ANHYDRIDE 3Kg, tall oil acid 4Kg, vinylformic acid 3Kg, mineral alkali 5Kg, promotor 2Kg, sequestrant 3Kg, tensio-active agent 3Kg, water 70Kg; Mineral alkali is sodium hydroxide or potassium hydroxide; Promotor is persulfuric acid acid ammonium; Sequestrant is ethylenediamine tetraacetic acid (EDTA); Tensio-active agent is Sodium dodecylbenzene sulfonate.Add water, promotor, sequestrant, mineral alkali, tensio-active agent in a kettle., stir, be warming up to 55 DEG C, add vinyl acetate between to for plastic, dimethyl diallyl ammonium chloride, MALEIC ANHYDRIDE, tall oil acid, vinylformic acid, acrylamide again, stir, be incubated 6 hours, let cool, to obtain final product.
reference examples 2
Be with the difference of embodiment 3: do not add tall oil acid.
The preparation method of polyacrylamide sludge dehydrating agent, first takes following raw material: acrylamide 45Kg, vinyl acetate between to for plastic 6Kg, dimethyl diallyl ammonium chloride 4Kg, oxyethylene 3Kg, MALEIC ANHYDRIDE 3Kg, vinylformic acid 3Kg, mineral alkali 5Kg, promotor 2Kg, sequestrant 3Kg, tensio-active agent 3Kg, water 70Kg; Mineral alkali is sodium hydroxide or potassium hydroxide; Promotor is persulfuric acid acid ammonium; Sequestrant is ethylenediamine tetraacetic acid (EDTA); Tensio-active agent is Sodium dodecylbenzene sulfonate.Add water, promotor, sequestrant, mineral alkali, tensio-active agent in a kettle., stir, be warming up to 55 DEG C, add vinyl acetate between to for plastic, dimethyl diallyl ammonium chloride, oxyethylene, MALEIC ANHYDRIDE, vinylformic acid, acrylamide again, stir, be incubated 6 hours, let cool, to obtain final product.
reference examples 3
Be with the difference of embodiment 3: do not add MALEIC ANHYDRIDE.
The preparation method of polyacrylamide sludge dehydrating agent, first takes following raw material: acrylamide 45Kg, vinyl acetate between to for plastic 6Kg, dimethyl diallyl ammonium chloride 4Kg, oxyethylene 3Kg, tall oil acid 4Kg, vinylformic acid 3Kg, mineral alkali 5Kg, promotor 2Kg, sequestrant 3Kg, tensio-active agent 3Kg, water 70Kg; Mineral alkali is sodium hydroxide or potassium hydroxide; Promotor is persulfuric acid acid ammonium; Sequestrant is ethylenediamine tetraacetic acid (EDTA); Tensio-active agent is Sodium dodecylbenzene sulfonate.Add water, promotor, sequestrant, mineral alkali, tensio-active agent in a kettle., stir, be warming up to 55 DEG C, add vinyl acetate between to for plastic, dimethyl diallyl ammonium chloride, oxyethylene, tall oil acid, vinylformic acid, acrylamide again, stir, be incubated 6 hours, let cool, to obtain final product.
reference examples 4
Be with the difference of embodiment 3: do not add vinyl acetate between to for plastic.
The preparation method of polyacrylamide sludge dehydrating agent, first takes following raw material: acrylamide 45Kg, dimethyl diallyl ammonium chloride 4Kg, oxyethylene 3Kg, MALEIC ANHYDRIDE 3Kg, tall oil acid 4Kg, vinylformic acid 3Kg, mineral alkali 5Kg, promotor 2Kg, sequestrant 3Kg, tensio-active agent 3Kg, water 70Kg; Mineral alkali is sodium hydroxide or potassium hydroxide; Promotor is persulfuric acid acid ammonium; Sequestrant is ethylenediamine tetraacetic acid (EDTA); Tensio-active agent is Sodium dodecylbenzene sulfonate.Add water, promotor, sequestrant, mineral alkali, tensio-active agent in a kettle., stir, be warming up to 55 DEG C, add dimethyl diallyl ammonium chloride, oxyethylene, MALEIC ANHYDRIDE, tall oil acid, vinylformic acid, acrylamide again, stir, be incubated 6 hours, let cool, to obtain final product.
performance test
As follows to the disposal of oily sludge test-results of certain refinery:
As can be seen from the table, the polyacrylamide sludge dehydrating agent prepared in embodiment 1-embodiment 3 can make the moisture content in mud remove preferably, and COD content after filter in liquid and oil-contg less, be easy to follow-up biochemical treatment.And carry out modification owing to not adding oxyethylene in reference examples 1, make the whole structure of dewatering agent slightly be worse than embodiment; In reference examples 2, owing to not adding tall oil acid, make the content comparatively embodiment of the COD filtering rear water, slightly higher; In reference examples 3, carry out modification owing to not adding MALEIC ANHYDRIDE to dewatering agent, comparatively embodiment is slightly high to make the water content of the mud after process; In reference examples 4, owing to not adding vinyl acetate between to for plastic, modification is carried out to dewatering agent, make dehydration rate lower slightly; In addition, as can be seen from above-mentioned test-results, after carrying out modification to polyacrylamide, its dehydrating effect is better than traditional polyacrylamide dewatering agent.
Claims (6)
1. polyacrylamide sludge dehydrating agent, it is characterized in that, include following component by weight: acrylamide 40 ~ 50 parts, vinyl acetate between to for plastic 4 ~ 8 parts, dimethyl diallyl ammonium chloride 3 ~ 5 parts, oxyethylene 2 ~ 4 parts, MALEIC ANHYDRIDE 2 ~ 4 parts, tall oil acid 4 ~ 5 parts, 2 ~ 4 parts, vinylformic acid, mineral alkali 4 ~ 9 parts, promotor 2 ~ 3 parts, sequestrant 2 ~ 3 parts, 2 ~ 4 parts, tensio-active agent, 60 ~ 80 parts, water.
2. polyacrylamide sludge dehydrating agent according to claim 1, is characterized in that: mineral alkali is sodium hydroxide or potassium hydroxide.
3. polyacrylamide sludge dehydrating agent according to claim 1, is characterized in that: described promotor is persulfuric acid acid ammonium.
4. polyacrylamide sludge dehydrating agent according to claim 1, is characterized in that: described sequestrant is ethylenediamine tetraacetic acid (EDTA).
5. polyacrylamide sludge dehydrating agent according to claim 1, is characterized in that: described tensio-active agent is Sodium dodecylbenzene sulfonate.
6. the preparation method of the polyacrylamide sludge dehydrating agent described in any one of Claims 1 to 5, it is characterized in that, comprise the steps: to add water, promotor, sequestrant, mineral alkali, tensio-active agent in a kettle., stir, be warming up to 50 ~ 60 DEG C, then add vinyl acetate between to for plastic, dimethyl diallyl ammonium chloride, oxyethylene, MALEIC ANHYDRIDE, tall oil acid, vinylformic acid, acrylamide, stir, be incubated 4 ~ 8 hours, let cool, to obtain final product.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106316069A (en) * | 2016-08-24 | 2017-01-11 | 宁波鑫涌环保技术有限公司 | Efficient slurry dehydrating agent |
| CN106430904A (en) * | 2016-08-24 | 2017-02-22 | 宁波鑫涌环保技术有限公司 | Slurry dehydrant |
| CN107265825A (en) * | 2017-06-21 | 2017-10-20 | 中国石油化工股份有限公司 | A kind of dewatering of oily sludge dehydrating agent and preparation method thereof and oily sludge |
| CN107902857A (en) * | 2017-12-14 | 2018-04-13 | 张亚欣 | A kind of sludge stabilization agent for handling heavy metal and its preparation method and application |
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| JP2006291024A (en) * | 2005-04-11 | 2006-10-26 | Hymo Corp | Sludge dehydrating agent composition and method for dehydrating sludge |
| CN103304015A (en) * | 2013-05-20 | 2013-09-18 | 秦小林 | PAC-PDMDAAC composite polymer coagulant for water treatment and preparation method thereof |
| CN103319652A (en) * | 2013-06-08 | 2013-09-25 | 山东瑞特精细化工有限公司 | Preparation method of hydrophobic modified cationic polyacrylamide flocculant |
| CN103964557A (en) * | 2014-05-21 | 2014-08-06 | 山东大学 | Method for preparing cationic organic flocculant by using paper-making sludge |
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2014
- 2014-09-19 CN CN201410481056.3A patent/CN104261651B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006291024A (en) * | 2005-04-11 | 2006-10-26 | Hymo Corp | Sludge dehydrating agent composition and method for dehydrating sludge |
| CN103304015A (en) * | 2013-05-20 | 2013-09-18 | 秦小林 | PAC-PDMDAAC composite polymer coagulant for water treatment and preparation method thereof |
| CN103319652A (en) * | 2013-06-08 | 2013-09-25 | 山东瑞特精细化工有限公司 | Preparation method of hydrophobic modified cationic polyacrylamide flocculant |
| CN103964557A (en) * | 2014-05-21 | 2014-08-06 | 山东大学 | Method for preparing cationic organic flocculant by using paper-making sludge |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106316069A (en) * | 2016-08-24 | 2017-01-11 | 宁波鑫涌环保技术有限公司 | Efficient slurry dehydrating agent |
| CN106430904A (en) * | 2016-08-24 | 2017-02-22 | 宁波鑫涌环保技术有限公司 | Slurry dehydrant |
| CN106430904B (en) * | 2016-08-24 | 2019-10-29 | 宁波国谱环保科技有限公司 | Slurry dewatering agent |
| CN107265825A (en) * | 2017-06-21 | 2017-10-20 | 中国石油化工股份有限公司 | A kind of dewatering of oily sludge dehydrating agent and preparation method thereof and oily sludge |
| CN107265825B (en) * | 2017-06-21 | 2021-01-26 | 中国石油化工股份有限公司 | Oily sludge dehydrating agent, preparation method thereof and dehydration method of oily sludge |
| CN107902857A (en) * | 2017-12-14 | 2018-04-13 | 张亚欣 | A kind of sludge stabilization agent for handling heavy metal and its preparation method and application |
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| CN104261651B (en) | 2015-12-30 |
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Effective date of registration: 20190719 Address after: No. 31 Guangxing Road, Guangrao Economic Development Zone, Guangrao County, Dongying City, Shandong Province Patentee after: GREEN CHEMICAL (DONGYING) CO., LTD. Address before: 257 300 West of Yuehe Road and North of Guangxing Road, Guangrao County Economic Development Zone, Dongying City, Shandong Province Patentee before: Shandong Ruite Fine Chemicals Co., Ltd. |
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Denomination of invention: Polyacrylamide sludge dehydrating agent and preparation method thereof Effective date of registration: 20211223 Granted publication date: 20151230 Pledgee: Guangrao sub branch of Dongying Bank Co., Ltd Pledgor: GREEN CHEMICAL (DONGYING) Co.,Ltd. Registration number: Y2021980015782 |