CN105016448B - One kind processing papermaking wastewater composite high-molecular sewage treatment flocculating agent and preparation method thereof - Google Patents
One kind processing papermaking wastewater composite high-molecular sewage treatment flocculating agent and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to one kind to handle papermaking wastewater composite high-molecular sewage treatment flocculating agent, the raw material that the flocculant uses has the characteristics that degradable, cheap, and by using special proportioning, the starch material of special modification, synergy is produced with composite assistant, its flocculation is substantially increased, effectively removes suspension, COD, BOD in sewage.
Description
Technical field
The present invention relates to one kind to handle papermaking wastewater composite high-molecular sewage treatment flocculating agent, more particularly to a kind of processing
Papermaking wastewater composite high-molecular sewage treatment flocculating agent.
The invention further relates to the preparation method of above-mentioned flocculant.
Background technology
Flocculant precipitation is the current method using more processing industrial wastewaters, by adding flocculant in waste water
Oil removal and deliquescent biochemical oxygen demand thing can effectively be removed（COD）, biological oxygen consumption thing (BOD), it is dirty so as to reach purification
The purpose of water.High polymer coagulant is broadly divided into inorganic polymer flocculant, such as Polyferric Sulfate, poly-aluminium at present；Natural polymer is wadded a quilt with cotton
Solidifying agent, such as chitin, modified starch etc.；Synthetic polymeric flocculant, such as polyacrylamide.Due to polyacrylamide price compared with
Height, thus come year in year out it is many improve both for how modified polyacrylamide, or using a variety of flocculants it is compound prepare it is multiple
Close flocculant.Such as a kind of compound sewage flocculating agent is disclosed in Chinese patent CN1110254A, mainly by aluminum sulfate, sulfuric acid
Ferrous iron, calcium oxide, potassium permanganate, polyacrylamide composition.The wastewater treatment efficiency of the composite flocculation agent is unsatisfactory, and makes
It is complicated with process.Chinese patent CN1951834A discloses a kind of sewage flocculant, and it is mainly by bauxite or polyacrylamide
Composition, its flocculating effect is bad, and the COD surplus ratios of paper waste are more than 2%, BOD surplus ratios also greater than 2%.In addition with one
Partial flocculation agent, because used raw material also has the defects of price is high, not degradable, unfriendly to environment in itself, here
No longer enumerate.
The content of the invention
The present invention is completed to solve above-mentioned deficiency of the prior art, at one kind
Papermaking wastewater composite high-molecular sewage treatment flocculating agent is managed, the raw material that the flocculant uses has degradable, cheap etc.
Feature, and by using special proportioning, the raw material of special modification, and synergy is produced using composite assistant, greatly improve
Its flocculation, effectively remove suspension, COD, BOD in sewage.The present invention also provides the preparation of above-mentioned flocculant simultaneously
Method.
Technical scheme is as described below：
One kind processing papermaking wastewater composite high-molecular sewage treatment flocculating agent, it is characterised in that the flocculant is by following
Component forms：
Acrylamide 8-15 parts by weight
Mixed and modified starch mixture 65-100 parts by weight
Activated carbon 0.2-1.5 parts by weight
Sodium hydroxide 3-5 parts by weight
Chitosan 2-7 parts by weight
Composite assistant 17-50 parts by weight
Described a kind of processing papermaking wastewater composite high-molecular sewage treatment flocculating agent, it is characterised in that composite modified
Starch mixture is made up of thiomalic acid modified starch and acrylamide graft starch, and its weight ratio is 3:4-3:5.
Described a kind of processing papermaking wastewater composite high-molecular sewage treatment flocculating agent, it is characterised in that described compound
Auxiliary agent is by walnut shell powder 1-7 parts, PAFS 12-21 parts, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride 2-6 parts, benzyl
Base trimethyl ammonium chloride 2-16 parts form.
Described a kind of processing papermaking wastewater composite high-molecular sewage treatment flocculating agent, it is characterised in that described thio
Malic acid-modified starch is the phosphotungstic acid and 0.2wt% for adding the 5wt% in terms of starch total amount in about 35 DEG C of distilled water by starch
Sodium carboxymethylcellulose and thiomalic acid, reaction stirring 6 hours, the starch rubs with thiomalic acid, distilled water rubs
You are than being 1:10:5, its reacted product is filtered, obtains filter cake, it is clean using distilled water flushing, dry.
A kind of described processing papermaking wastewater composite high-molecular sewage treatment flocculating agent, it is characterised in that the acryloyl
It is to react at room temperature powder starch and 20wt% acrylamide aqueous solution 1 hour that amine grafting, which is formed sediment, and weight ratio is 1：3, add excessive
Methanol extraction, and using distillation water washing for several times, dry.
The present invention also provides the preparation method of above-mentioned flocculant, and a kind of described processing papermaking wastewater is dirty with composite high-molecular
The preparation method of water treatment flocculant, it is characterised in that comprise the following steps：
A kind of preparation method of described processing papermaking wastewater composite high-molecular sewage treatment flocculating agent, its feature exist
In：
Step 1：In terms of starch total amount 5% phosphotungstic acid and 0.2% carboxymethyl cellulose is added in about 35 DEG C of distilled water
Sodium and thiomalic acid, reaction stirring 6 hours, the starch rubs with thiomalic acid, the mol ratio of distilled water is 1:10:5,
Its reacted product is filtered, obtains filter cake, it is clean using distilled water flushing, dry；
Step 2：Powder starch and 20wt% acrylamide aqueous solution are reacted at room temperature 1 hour, part by weight 1：3, add
Enter excessive methanol precipitation, using distillation water washing for several times, dry；
Step 3：Step 1 and 2 obtained starch 65-100 parts by weight are taken, both weight ratios are 3:4-3:5, add propylene
Acid amides 8-15 parts by weight, stirred at 30 DEG C 30 minutes, then add activated carbon 0.2-1.5 parts by weight, sodium hydroxide 3-5 weight
Part, chitosan 2-7 parts by weight, composite assistant 17-50 parts by weight, by above-mentioned substance, temperature is maintained at 40- in a nitrogen atmosphere
50 DEG C of stirring reactions 2 hours, then it is warming up to 70-90 DEG C and reacts 1 hour, discharged after natural cooling.
Embodiment
With reference to embodiment and comparative example, the present invention is described in detail, and following embodiments are only used for specification
Explain in detail, be not intended as the limitation for the present invention.
Comparative example 1
Step 1：In terms of starch total amount 5% phosphotungstic acid and 0.2% carboxymethyl cellulose is added in about 35 DEG C of distilled water
Sodium and thiomalic acid, reaction stirring 6 hours, the starch rubs with thiomalic acid, the mol ratio of distilled water is 1:10:5,
Its reacted product is filtered, obtains filter cake, it is clean using distilled water flushing, dry；
Step 2：The parts by weight of starch 100 of step 1 are taken, the parts by weight of acrylamide 20 is added, is stirred 30 minutes at 30 DEG C,
Then the parts by weight of activated carbon 0.5 are added, the parts by weight of sodium hydroxide 4, the parts by weight of chitosan 5, the parts by weight of composite assistant 53 will be above-mentioned
Temperature is maintained at 50 DEG C of stirring reactions 2 hours to material in a nitrogen atmosphere, is then warming up to 90 DEG C and reacts 1 hour, natural cooling
After discharge.
Comparative example 2
Step 1：Powder starch and 20wt% acrylamide aqueous solution are reacted at room temperature 1 hour, part by weight 1：3, add
Enter excessive methanol precipitation, and wash for several times, dry；；
Step 2：The parts by weight of starch 100 of step 1 are taken, the parts by weight of acrylamide 15 is added, is stirred 30 minutes at 30 DEG C,
Then the parts by weight of activated carbon 1.5 are added, the parts by weight of sodium hydroxide 5, the parts by weight of chitosan 7, the parts by weight of composite assistant 50 will be above-mentioned
Temperature is maintained at 50 DEG C of stirring reactions 2 hours to material in a nitrogen atmosphere, is then warming up to 90 DEG C and reacts 1 hour, natural cooling
After discharge.
Embodiment 1
Step 1：In terms of starch total amount 5% phosphotungstic acid and 0.2% carboxymethyl cellulose is added in about 35 DEG C of distilled water
Sodium and thiomalic acid, reaction stirring 6 hours, the starch rubs with thiomalic acid, the mol ratio of distilled water is 1:10:5,
Its reacted product is filtered, obtains filter cake, it is clean using distilled water flushing, dry；
Step 2：Powder starch and 20wt% acrylamide aqueous solution are reacted at room temperature 1 hour, part by weight 1：3, add
Enter excessive methanol precipitation, and wash for several times, dry；
Step 3：Step 1 and the 2 obtained parts by weight of starch 100 are taken, both weight ratios are 3:5, add the weight of acrylamide 15
Part is measured, is stirred at 30 DEG C 30 minutes, then adds the parts by weight of activated carbon 1.5, the parts by weight of sodium hydroxide 5, the weight of chitosan 7
Part, the parts by weight of composite assistant 50, by above-mentioned substance, temperature is maintained at 50 DEG C of stirring reactions 2 hours in a nitrogen atmosphere, Ran Housheng
Temperature is reacted 1 hour to 90 DEG C, is discharged after natural cooling.
Embodiment 2
Step 1：In terms of starch total amount 5% phosphotungstic acid and 0.2% sodium carboxymethylcellulose is added in 35 DEG C of distilled water
And thiomalic acid, reaction stirring 6 hours, the starch rubs with thiomalic acid, the mol ratio of distilled water is 1:10:5, mistake
Its reacted product is filtered, obtains filter cake, it is clean using distilled water flushing, dry；
Step 2：Powder starch and 20wt% acrylamide aqueous solution are reacted at room temperature 1 hour, part by weight 1：3, add
Enter excessive methanol precipitation, and wash for several times, dry；
Step 3：Step 1 and the 2 obtained parts by weight of starch 65 are taken, both weight ratios are 3:5, add the weight of acrylamide 8
Part, stir 30 minutes at 30 DEG C, then the addition parts by weight of activated carbon 0.2, the parts by weight of sodium hydroxide 3, the parts by weight of chitosan 2,
The parts by weight of composite assistant 17, by above-mentioned substance, temperature is maintained at 40 DEG C of stirring reactions 2 hours in a nitrogen atmosphere, is then warming up to
70 DEG C are reacted 1 hour, are discharged after natural cooling
Comparative example 3
Step 1：In terms of starch total amount 5% phosphotungstic acid and 0.2% carboxymethyl cellulose is added in about 35 DEG C of distilled water
Sodium and thiomalic acid, reaction stirring 6 hours, the starch rubs with thiomalic acid, the mol ratio of distilled water is 1:10:5,
Its reacted product is filtered, obtains filter cake, it is clean using distilled water flushing, dry；
Step 2：Powder starch and 20wt% acrylamide aqueous solution are reacted at room temperature 1 hour, part by weight 1：3, add
Enter excessive methanol precipitation, and wash for several times, dry；
Step 3：Step 1 and the 2 obtained parts by weight of starch 100 are taken, both weight ratios are 3:5, add the weight of acrylamide 15
Part is measured, is stirred at 30 DEG C 30 minutes, then adds the parts by weight of activated carbon 1.5, the parts by weight of sodium hydroxide 5, the weight of chitosan 7
Part, by above-mentioned substance, temperature is maintained at 50 DEG C of stirring reactions 2 hours in a nitrogen atmosphere, is then warming up to 90 DEG C and reacts 1 hour,
Discharged after natural cooling.
Comparative example 4
The common parts by weight of hydroxymethyl starch 100, add the parts by weight of acrylamide 15, stir 30 minutes at 30 DEG C, then
Add the parts by weight of activated carbon 1.5, the parts by weight of sodium hydroxide 5, the parts by weight of chitosan 7, the parts by weight of composite assistant 50.By above-mentioned substance
Temperature is maintained at 50 DEG C of stirring reactions 2 hours in a nitrogen atmosphere, is then warming up to 90 DEG C and reacts 1 hour, goes out after natural cooling
Material.
The difference of wherein comparative example 1, comparative example 2 and embodiment 1 is that comparative example 1 and comparative example 2 are individually to use
A kind of modified starch, embodiment 1 are to have used composite modified starch.
The difference of comparative example 3 and embodiment 1 is that comparative example 3 is no and uses composite assistant.
The comparative example 4 that is distinguished as of comparative example 4 and embodiment 1 only only used common modifications starch.
List comparative example 1-4 in table 1 below, 2, the clean effect data of embodiment 1, which includes suspension,
The value of COD, BOD before and after flocculant is added.
Table 1
Table 2
The product decontamination obtained when simultaneously using composite modified starch and composite assistant can be seen that by above-mentioned numerical value
Ability is most strong.That is by the data in table 1,2, it can be seen that two kinds have association between modified starch and composite assistant
Same-action, the clean effect of final products is promoted mutually.
In addition included in preparation method of the invention in a nitrogen atmosphere, specified temp reaction time also to final
The dirt-removing power of product has certain influence.
Beneficial effect
Therefore using the present invention by using compound modified starch, and composite assistant is added and by nitrogen
The technological means such as controlling reaction temperature has obtained being substantially better than the flocculant of dirt-removing power in the prior art under atmosphere, with existing skill
Art, which is compared, has the advantages that COD, BOD removal effect are good, cost is low, product environment-friendly degradable.
It is above-mentioned that only several specific embodiments in the present invention are illustrated, but can not be as the protection model of the present invention
Enclose, the equivalent change or modification or equal proportion made by every design spirit according in the present invention zoom in or out, all should
Think to fall into protection scope of the present invention.
Claims (1)
1. one kind processing papermaking wastewater composite high-molecular sewage treatment flocculating agent, it is characterised in that the flocculant is by with the following group
It is grouped into：
Acrylamide 8-15 parts by weight
Composite modified starch mixture 65-100 parts by weight
Activated carbon 0.2-1.5 parts by weight
Sodium hydroxide 3-5 parts by weight
Chitosan 2-7 parts by weight
Composite assistant 17-50 parts by weight；
The composite modified starch mixture is made up of thiomalic acid modified starch and acrylamide graft starch, its weight ratio
For 3:4-3:5；
The composite assistant is by walnut shell powder 1-7 parts, PAFS 12-21 parts, methylacryoyloxyethyl trimethyl chlorine
Change ammonium 2-6 parts, benzyltrimethylammonium chloride 2-16 parts composition；
Its preparation process is as follows：
Step 1：In 35 DEG C of distilled water add in terms of starch total amount 5% phosphotungstic acid and 0.2% sodium carboxymethylcellulose and
The mol ratio of thiomalic acid, reaction stirring 6 hours, the starch and thiomalic acid, distilled water is 1:10:5, it is anti-to filter its
Product after answering, obtains filter cake, clean using distilled water flushing, dries；
Step 2：Starch and 20wt% acrylamide aqueous solution are reacted at room temperature 1 hour, part by weight 1：3, add excessive
Methanol extraction, using distillation water washing for several times, dry；
Step 3：Step 1 and 2 obtained starch 65-100 parts by weight are taken, both weight ratios are 3:4-3:5, add acrylamide
8-15 parts by weight, stir 30 minutes at 30 DEG C, then add activated carbon 0.2-1.5 parts by weight, sodium hydroxide 3-5 parts by weight,
Chitosan 2-7 parts by weight, composite assistant 17-50 parts by weight, by above-mentioned substance, temperature is maintained at 40-50 DEG C in a nitrogen atmosphere
Stirring reaction 2 hours, then it is warming up to 70-90 DEG C and reacts 1 hour, discharged after natural cooling.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105776576A (en) * | 2016-05-26 | 2016-07-20 | 许婷 | Papermaking wastewater treating agent and preparing method thereof |
| CN105776577A (en) * | 2016-05-26 | 2016-07-20 | 许婷 | Printing and dyeing wastewater treating agent and preparing method thereof |
| CN105776579A (en) * | 2016-05-26 | 2016-07-20 | 许婷 | Waste plastic recovery processing sewage treating agent and preparation method thereof |
| CN106006906A (en) * | 2016-07-02 | 2016-10-12 | 杨奇 | Biodegradable flocculating agent |
| CN106277254A (en) * | 2016-09-08 | 2017-01-04 | 合肥智慧殿投资管理有限公司 | One way of life sewage coagulant and its production and use |
| CN106865782A (en) * | 2017-02-27 | 2017-06-20 | 苏州顶裕节能设备有限公司 | It is a kind of to be added with sewage-treating agent of butyl titanate and preparation method thereof |
| CN107445275A (en) * | 2017-09-08 | 2017-12-08 | 安徽玄同工业设计有限公司 | A kind for the treatment of agent for papermaking wastewater and preparation method thereof |
| CN108298772A (en) * | 2017-09-08 | 2018-07-20 | 安徽玄同工业设计有限公司 | A kind of processing method for papermaking wastewater |
| CN107963700A (en) * | 2017-11-17 | 2018-04-27 | 侯英 | Sewage flocculant and preparation method thereof |
| CN111792750B (en) * | 2020-06-17 | 2022-04-15 | 中国科学院青岛生物能源与过程研究所 | Fermentation liquor pretreatment method by coupling flocculation adsorption |
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| JPH10202269A (en) * | 1997-01-20 | 1998-08-04 | Kanebo Ltd | Treatment of waste liquid |
| CN101503239B (en) * | 2009-03-23 | 2012-05-30 | 中国科学院生态环境研究中心 | Multicomponent composite flocculating setting agent and use in arsenic contamination water treatment |
| CN103641247B (en) * | 2013-12-27 | 2016-04-06 | 沧州市利达环保工程有限公司 | One way of life sewage-treating agent and preparation method thereof |
| CN104071880A (en) * | 2014-06-27 | 2014-10-01 | 南昌格润环保科技有限公司 | Extensive wastewater treatment capture agent |
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Inventor after: Ling Jing Inventor after: Gao Jun Inventor after: Nicholas Bwas Inventor before: Liu Guangli |
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Effective date of registration: 20171214 Address after: 225442 Binjiang North Road, Taixing Economic Development Zone, Taizhou City, Jiangsu Province, No. 6 Applicant after: Essen (Chinese) Co. Ltd Address before: 674100 Yunnan City, Lijiang, China Sea Lane Ankang Lane No. 173 Yuquan garden, building 4, door 201, 1 Applicant before: Liu Guangli |
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