CN1266821A - Polyaluminium chloride and chitin compounded efficient flocculant and its preparing process - Google Patents

Polyaluminium chloride and chitin compounded efficient flocculant and its preparing process Download PDF

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Publication number
CN1266821A
CN1266821A CN 99102882 CN99102882A CN1266821A CN 1266821 A CN1266821 A CN 1266821A CN 99102882 CN99102882 CN 99102882 CN 99102882 A CN99102882 A CN 99102882A CN 1266821 A CN1266821 A CN 1266821A
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China
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aluminum chloride
chitin
polymerize aluminum
chitosan
inorganic
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CN 99102882
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Chinese (zh)
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汤鸿霄
石宝友
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Research Center for Eco Environmental Sciences of CAS
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Research Center for Eco Environmental Sciences of CAS
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Priority to CN 99102882 priority Critical patent/CN1266821A/en
Publication of CN1266821A publication Critical patent/CN1266821A/en
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Abstract

A compound flocculant of natural organic and inorganic high-molecular substances is prepared from polyaluminium chloride and chitosan through proportioning, mixing, stirring and reaction. Its advantages are excellent electric neutralizing power, high-efficiency bridging action and no toxicity.

Description

Polymerize aluminum chloride and chitin compounded efficient flocculant and preparation method thereof
The present invention relates to a kind of inorganic polymer polymerize aluminum chloride and the chitin compounded polymeric flocculant PACCH of natural organic high-molecular and preparation method thereof, belong to the technical field of water treatment with flocculation agent.
In process water, civilian water and municipal effluent, Industrial Wastewater Treatment, coagulation technology is one of technology of widespread use the most.Coagulation technology can be with removing the particulate form impurity in the water body and be adsorbed on pollutents such as heavy metal on these particulate matter, organism, thereby demand is widely arranged, and is in all the time among the continuous development.Coagulating agent is one of key link of coagulation technology.Can divide into two big class, i.e. inorganic coagulant and organic coagulating agent by its chemical property.Can also further divide into low cohere agent and polymeric flocculant by the molecular weight size simultaneously.
The tradition coagulating agent belongs to low cohere agent, and being mainly aluminium system is salt with iron, as Tai-Ace S 150, iron trichloride etc.In its use, have defectives such as speed of reaction is slow, medicine consumption high and low temperature low-cloudy water treatment effect is not good.New class water treatment agent-inorganic polymer flocculant after the sixties occur, is being represented the leading development trend of inorganic coagulant always, and the trend of alternative traditional inorganic salt class is arranged in giving water treatment.Inorganic polymer flocculant progressively forms series of products as the developing main flow of inorganic coagulant.Wherein polymerize aluminum chloride, polyaluminium sulfate, bodied ferric sulfate have fixed product.The application in water treatment field of contemporaneity, organic polymer coargulator has also obtained rapidly development, particularly in the consumption maximum of industrial sectors such as feedwater, papermaking, iron and steel, metallurgy, chemistry.In recent years, organic polymer is also obtaining growth rapidly aspect its kind, the output.Organic polymer coargulator is compared with inorganic coagulant has following characteristics: (1) consumption is few, the organic polymer coargulator of 1ppm~tens of ppm can be brought into play good flocculating effect, and its consumption only is equivalent to 1/tens~several percent one of inorganic coagulant.(2) ability of clarification water quality is strong, and the organic macromolecule long-chain can be built bridge between the more particles thing, forms bigger flco, thereby effectively net is caught particulate matter tiny in the water, improves the water clarification degree.(3) flocculation rate is fast, just can form bigger condensation product in several seconds, has improved sedimentation greatly, has floated upward and the speed of filter dehydration, has shortened the operating time.(4) flocculating property of organic polymer coargulator is not subject to the interference of the factors such as pH value of water.(5) sludge quantity of Sheng Chenging is few.Yet, also have two principal elements limiting the application of organic polymer coargulator in water treatment, i.e. its toxicity and economy.For example, the acrylamide monomer in the polyacrylamide amine product has very big harm to the neural system of humans and animals, to its content strict control must be arranged; The technology of general synthetic organic polymer flocculation agent is complicated, and raw materials cost is higher, valuable product.And chitin is the natural organic high-molecular that exists on the earth, extensively is distributed in the body surface of arthropods and mollusk etc., is widely used in the food medicine and other fields in recent years, does not have toxicity problem; Nearly 10,000,000,000 tons of the annual biosynthetic chitin of nature is the nitrogenous natural organic-compound of the outer quantity maximum of isolating protein on the earth, has great potential using value.
After the objective of the invention is in the polymerize aluminum chloride to introduce natural organic high-molecular and making composite flocculation agent, on the one hand, it is short to overcome the inorganic flocculating agent molecular chain, builds bridge between particulate matter and forms big flocs unit, sweeps off except that the deficiency aspect the molecule by volume; On the other hand, do not reduce inorganic polymer stronger in and in the ability of particulate matter surface negative charge even increase.
Raw material can be the polymerize aluminum chloride of each class methods production and the chitosan that each class methods is produced.
At the different quality situation, can suitably regulate the basicity of polymerize aluminum chloride and the content of chitin.
Embodiment one:
Take by weighing 30.00g and contain Al 2O 316.54%, basicity is 60% polymerize aluminum chloride, under strong magnetic agitation condition, slowly (deacetylation of chitin is 75% to the acetic acid solution of dropping 1% chitin, molecular weight is about 300,000) 26.20g, rate of addition is 1.0g/min, and the weight ratio (brief note is O/A) of promptly making organism and aluminium is inorganic-organic composite type polymeric flocculant of 0.10.The adding speed of the concentration of the concentration of polymerize aluminum chloride, chitin and chitin can be adjusted according to actual in the preparation process, avoids chitin solution to add back formation flocks and separates out from system.
Embodiment two:
Take by weighing 30.00g and contain Al 2O 316.54%, basicity is 60% polymerize aluminum chloride, under strong magnetic agitation condition, (deacetylation is 75% greater than 100 purpose chitins to drop into the process mechanical disintegration, about molecular weight 300,000) 0.262g, after needing 2-3 hour approximately, chitin is dissolved in the system fully, promptly makes O/A and be inorganic-organic composite type polymeric flocculant of 0.10.
This flocculant contrasts with using separately the aluminium polychloride purifying water effect:
Former water pH7.5,20 ℃ of temperature
The dosage raw water turbidity is surplus turbid
(Al?mg/L) (ntu) (ntu)
This flocculation agent 1.54 90 7.7
Polymerize aluminum chloride 1.54 90 32.9
This flocculation agent 1.67 90 1.7
Polymerize aluminum chloride 1.67 90 9.1
This flocculation agent 2.05 90 0.3
Polymerize aluminum chloride 2.05 90 3.9
This shows that its purifying water effect of flocculation agent of this law preparation significantly is better than polymerize aluminum chloride.

Claims (3)

1, a kind of dynamical polymerize aluminum chloride and natural polymer chitin inorganic-organic composite type polymeric flocculant is characterized in that with polymerize aluminum chloride, chitosan be raw material, and the basicity of used polymerize aluminum chloride is 40-70%, Al 2O 3Content 8-16%, the content of chitin are 0.5-5%, and the deacetylation of chitin is 60-80%.
2, as claimed in claim 1 inorganic-preparation method of organic composite type polymeric flocculant, it is characterized in that with the polymerize aluminum chloride being main component, under normal temperature (or heating below 60 ℃), normal pressure, violent stirring condition, a certain amount of chitosan is incorporated in the polymerize aluminum chloride system.
3, synthetic method as claimed in claim 2 has and it is characterized in that chitin introduces two kinds of feasible modes are arranged in the polymerize aluminum chloride: (1) is dissolved into certain density solution with chitosan with about 1% hydrochloric acid or acetate earlier, and then slowly is incorporated in the polymeric aluminum system and stirs promptly.(2) directly will be added to by a certain percentage in the polymerize aluminum chloride system after the pulverizing of solid chitosan, the stirring that does not stop up to whole dissolvings promptly.
CN 99102882 1999-03-12 1999-03-12 Polyaluminium chloride and chitin compounded efficient flocculant and its preparing process Pending CN1266821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99102882 CN1266821A (en) 1999-03-12 1999-03-12 Polyaluminium chloride and chitin compounded efficient flocculant and its preparing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99102882 CN1266821A (en) 1999-03-12 1999-03-12 Polyaluminium chloride and chitin compounded efficient flocculant and its preparing process

Publications (1)

Publication Number Publication Date
CN1266821A true CN1266821A (en) 2000-09-20

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003010233A1 (en) * 2001-07-26 2003-02-06 Ppg Industries Ohio, Inc. Compositions incorporating chitosan for paint detackification
CN102381746A (en) * 2010-08-30 2012-03-21 东莞市智造生物科技有限公司 Compound water treatment agent
CN102583681A (en) * 2011-01-14 2012-07-18 索尼公司 Plant-sourced flocculant, flocculant mixture, condensation method and method for preparing plant-sourced flocculant
CN101648030B (en) * 2009-09-02 2013-01-02 王建华 Macromolecular deodorizer and preparation process thereof
CN103708568A (en) * 2013-12-11 2014-04-09 山东华亚环保科技有限公司 Papermaking sewage treatment agent
CN104609486A (en) * 2015-01-30 2015-05-13 无锡昊瑜节能环保设备有限公司 Sewage treatment agent and preparation method thereof
CN105084621A (en) * 2015-08-18 2015-11-25 上海艾斯维洗涤机械工程技术有限公司 Recycling method of laundry wastewater
CN106946327A (en) * 2017-03-13 2017-07-14 苏州顶裕生物科技有限公司 A kind of modified humic acid flocculant and preparation method thereof
CN109399772A (en) * 2018-11-15 2019-03-01 浙江海洋大学 A kind of preparation method of natural peach gum composite flocculation agent

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6673263B2 (en) 2001-07-26 2004-01-06 Ppg Industries Ohio, Inc. Compositions incorporating chitosan for paint detackification
US6858093B2 (en) 2001-07-26 2005-02-22 Ppg Industries Ohio, Inc. Method for paint detackification using compositions containing chitosan
WO2003010233A1 (en) * 2001-07-26 2003-02-06 Ppg Industries Ohio, Inc. Compositions incorporating chitosan for paint detackification
CN101648030B (en) * 2009-09-02 2013-01-02 王建华 Macromolecular deodorizer and preparation process thereof
CN102381746A (en) * 2010-08-30 2012-03-21 东莞市智造生物科技有限公司 Compound water treatment agent
CN102381746B (en) * 2010-08-30 2013-08-21 东莞市智造生物科技有限公司 Compound water treatment agent
JP2014505588A (en) * 2011-01-14 2014-03-06 ソニー株式会社 Plant-derived flocculant, flocculant mixture, flocculation method, and method for producing plant-derived flocculant
WO2012094967A1 (en) * 2011-01-14 2012-07-19 索尼公司 Plant-derived flocculant, flocculant mixture, method of flocculation, and method for preparing plant-derived flocculant
CN102583681A (en) * 2011-01-14 2012-07-18 索尼公司 Plant-sourced flocculant, flocculant mixture, condensation method and method for preparing plant-sourced flocculant
CN102583681B (en) * 2011-01-14 2014-07-02 索尼公司 Plant-sourced flocculant, flocculant mixture, condensation method and method for preparing plant-sourced flocculant
JP2016026871A (en) * 2011-01-14 2016-02-18 ソニー株式会社 Flocculation method
US9611157B2 (en) 2011-01-14 2017-04-04 Sony Corporation Plant-derived flocculant, flocculant mixture, method of flocculation, and method for preparing plant-derived flocculant
CN103708568A (en) * 2013-12-11 2014-04-09 山东华亚环保科技有限公司 Papermaking sewage treatment agent
CN103708568B (en) * 2013-12-11 2015-10-14 顾祥茂 A kind for the treatment of agent for papermaking wastewater
CN104609486A (en) * 2015-01-30 2015-05-13 无锡昊瑜节能环保设备有限公司 Sewage treatment agent and preparation method thereof
CN105084621A (en) * 2015-08-18 2015-11-25 上海艾斯维洗涤机械工程技术有限公司 Recycling method of laundry wastewater
CN106946327A (en) * 2017-03-13 2017-07-14 苏州顶裕生物科技有限公司 A kind of modified humic acid flocculant and preparation method thereof
CN109399772A (en) * 2018-11-15 2019-03-01 浙江海洋大学 A kind of preparation method of natural peach gum composite flocculation agent

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