CN105084499A - Composite high-molecular sewage treatment flocculant for treating printing and dyeing sewage and preparation method thereof - Google Patents

Composite high-molecular sewage treatment flocculant for treating printing and dyeing sewage and preparation method thereof Download PDF

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Publication number
CN105084499A
CN105084499A CN201510529741.3A CN201510529741A CN105084499A CN 105084499 A CN105084499 A CN 105084499A CN 201510529741 A CN201510529741 A CN 201510529741A CN 105084499 A CN105084499 A CN 105084499A
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weight
starch
composite
distilled water
dyeing
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CN201510529741.3A
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CN105084499B (en
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蒋金香
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蒋金香
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Abstract

The invention relates to a composite high-molecular sewage treatment flocculant for treating printing and dyeing sewage and a preparation method thereof. Raw materials adopted to prepare the flocculant have the advantages of easiness in degradation and low cost, and starch which is specially proportioned and modified is used as a raw material to cooperate with a compound additive, so that flocculation effect of the flocculant is improved greatly, and suspended matter, COD and BOD in sewage can be removed effectively.

Description

A kind of process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent and preparation method thereof

Technical field

The present invention relates to a kind of composite high-molecular sewage treatment flocculating agent, particularly one process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent.

The invention still further relates to the preparation method of above-mentioned flocculation agent.

Background technology

Flocculation agent precipitation is the method adopting many process trade effluents at present, effectively can remove suspended substance and deliquescent biochemical oxygen demand thing (COD), biological oxygen consumption thing (BOD) by adding flocculation agent in waste water, thus reach the object of purifying waste water.Current polymeric flocculant is mainly divided into inorganic polymer flocculant, as Polyferric Sulfate, poly-aluminium etc.; Natural macromolecule flocculating agent, as chitin, treated starch etc.; Synthetic polymeric flocculant, as polyacrylamide etc.Because polyacrylamide price is higher, therefore in the past few years many improvement are all modified polyacrylamide for how, or use multiple flocculation agent compound to prepare composite flocculation agent.Such as in Chinese patent CN1110254A, disclose a kind of compound sewage flocculating agent, primarily of Tai-Ace S 150, ferrous sulfate, calcium oxide, potassium permanganate, polyacrylamide composition.The wastewater treatment efficiency of this composite flocculation agent is unsatisfactory, and use procedure is complicated.Chinese patent CN1951834A discloses a kind of sewage flocculant, and it is primarily of bauxite or polyacrylamide composition, and its flocculating effect is not good, and the COD surplus ratio of paper waste is greater than 2%, BOD surplus ratio and is also greater than 2%.Some flocculation agent in addition, due to adopted raw material itself also exist price high, not easily degrade, to defects such as environment are unfriendly, no longer enumerate here.

Summary of the invention

The present invention completes to solve above-mentioned deficiency of the prior art, the object of this invention is to provide a kind of process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent, the raw material that this flocculation agent adopts has the features such as easy degraded, low price, and by using the raw material of special proportioning, special modification, and use composite assistant to produce synergy, substantially increase its throwing out, effectively remove the suspended substance in sewage, COD, BOD.The present invention simultaneously also provides the preparation method of above-mentioned flocculation agent.

Technical scheme of the present invention is as described below:

A kind of process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent, is characterized in that described flocculation agent is composed of the following components:

Acrylamide 15-30 weight part

Mixed and modified starch mixture 50-100 weight part

Activated carbon 0.2-1.0 weight part

Sodium hydroxide 1-4 weight part

Chitosan 3-6 weight part

Composite assistant 24-57 weight part

Described one process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent, it is characterized in that, composite modified starch mixture is made up of mercaptosuccinic acid treated starch and acrylamide graft starch, and its weight ratio is 1:2-2:5.

Described one process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent, it is characterized in that, described composite assistant is made up of walnut shell flour 3-8 part, PAFS 10-20 part, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride 3-9 part, benzyl trimethyl ammonium chloride 8-20 part.

Described one process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent, it is characterized in that, described mercaptosuccinic acid treated starch adds with the Xylo-Mucine of the phospho-wolframic acid of starch total amount 5wt% and 0.2wt% and mercaptosuccinic acid in about 35 DEG C of distilled water by starch, reaction stirring 6 hours, described starch and mercaptosuccinic acid rub, the mol ratio of distilled water is 1:10:3, filter its reacted product, obtain filter cake, use distilled water flushing is clean, dry.

Described one process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent, it is characterized in that described acrylamide graft starch is by the acrylamide solution room temperature reaction 1 hour of powder starch and 20wt%, weight ratio is 1:3, add excessive methanol precipitation, and use distilled water wash for several times, dry.

The present invention also provides the preparation method of above-mentioned flocculation agent, and described a kind of preparation method processing dyeing and printing sewage composite high-molecular sewage treatment flocculating agent, is characterized in that comprising the following steps:

Described a kind of preparation method processing dyeing and printing sewage composite high-molecular sewage treatment flocculating agent, is characterized in that:

Step 1: add in about 35 DEG C of distilled water with the phospho-wolframic acid of starch total amount 5% and 0.2% Xylo-Mucine and mercaptosuccinic acid, reaction stirring 6 hours, described starch and mercaptosuccinic acid rub, the mol ratio of distilled water is 1:10:3, filter its reacted product, obtain filter cake, use distilled water flushing is clean, dry;

Step 2: by the acrylamide solution room temperature reaction 1 hour of powder starch and 20wt%, part by weight is 1:3, adds excessive methanol precipitation, uses distilled water wash for several times, dry;

Step 3: get the starch 50-100 weight part that step 1 and 2 obtains, both weight ratios are 1:2-2:5, add acrylamide 15-30 weight part, stir 30 minutes at 30 DEG C, then add activated carbon 0.2-1.0 weight part, sodium hydroxide 1-4 weight part, chitosan 3-6 weight part, composite assistant 24-57 weight part, by above-mentioned substance in a nitrogen atmosphere temperature remain on 40-50 DEG C of stirring reaction 2 hours, then 70-90 DEG C of reaction 1 hour is warmed up to, discharging after naturally cooling.

Embodiment

Below in conjunction with embodiment and comparative example, the present invention is described in detail, and following embodiment is only used for the detailed explanation to specification sheets, not as restriction of the present invention.

Comparative example 1

Step 1: add in about 35 DEG C of distilled water with the phospho-wolframic acid of starch total amount 5% and 0.2% Xylo-Mucine and mercaptosuccinic acid, reaction stirring 6 hours, described starch and mercaptosuccinic acid rub, the mol ratio of distilled water is 1:10:3, filter its reacted product, obtain filter cake, use distilled water flushing is clean, dry;

Step 2: starch 100 weight part getting step 1, add acrylamide 30 weight part, stir 30 minutes at 30 DEG C, then activated carbon 1.0 weight part is added, sodium hydroxide 4 weight part, chitosan 6 weight part, composite assistant 57 weight part, by above-mentioned substance in a nitrogen atmosphere temperature remain on 50 DEG C of stirring reactions 2 hours, be then warmed up to 90 DEG C reaction 1 hour, discharging after naturally cooling.

Comparative example 2

Step 1: by the acrylamide solution room temperature reaction 1 hour of powder starch and 20wt%, part by weight is 1:3, adds excessive methanol precipitation, and washing for several times, dry; ;

Step 2: starch 100 weight part getting step 1, add acrylamide 30 weight part, stir 30 minutes at 30 DEG C, then activated carbon 1.0 weight part is added, sodium hydroxide 4 weight part, chitosan 6 weight part, composite assistant 57 weight part, by above-mentioned substance in a nitrogen atmosphere temperature remain on 50 DEG C of stirring reactions 2 hours, be then warmed up to 90 DEG C reaction 1 hour, discharging after naturally cooling.

Embodiment 1

Step 1: add in about 35 DEG C of distilled water with the phospho-wolframic acid of starch total amount 5% and 0.2% Xylo-Mucine and mercaptosuccinic acid, reaction stirring 6 hours, described starch and mercaptosuccinic acid rub, the mol ratio of distilled water is 1:10:3, filter its reacted product, obtain filter cake, use distilled water flushing is clean, dry;

Step 2: by the acrylamide solution room temperature reaction 1 hour of powder starch and 20wt%, part by weight is 1:3, adds excessive methanol precipitation, and washing for several times, dry;

Step 3: get starch 50 weight part that step 1 and 2 obtains, both weight ratios are 2:5, add acrylamide 30 weight part, stir 30 minutes at 30 DEG C, then add activated carbon 1.0 weight part, sodium hydroxide 4 weight part, chitosan 6 weight part, composite assistant 57 weight part, by above-mentioned substance in a nitrogen atmosphere temperature remain on 50 DEG C of stirring reactions 2 hours, then 90 DEG C of reactions 1 hour is warmed up to, discharging after naturally cooling.

Embodiment 2

Step 1: add in 35 DEG C of distilled water with the phospho-wolframic acid of starch total amount 5% and 0.2% Xylo-Mucine and mercaptosuccinic acid, reaction stirring 6 hours, described starch and mercaptosuccinic acid rub, the mol ratio of distilled water is 1:10:3, filter its reacted product, obtain filter cake, use distilled water flushing is clean, dry;

Step 2: by the acrylamide solution room temperature reaction 1 hour of powder starch and 20wt%, part by weight is 1:3, adds excessive methanol precipitation, and washing for several times, dry;

Step 3: get starch 50 weight part that step 1 and 2 obtains, both weight ratios are 2:5, add acrylamide 15 weight part, stir 30 minutes at 30 DEG C, then add activated carbon 0.2 weight part, sodium hydroxide 1 weight part, chitosan 3 weight part, composite assistant 24 weight part, by above-mentioned substance in a nitrogen atmosphere temperature remain on 40 DEG C of stirring reactions 2 hours, then 70 DEG C of reactions 1 hour is warmed up to, discharging after naturally cooling

Comparative example 3

Step 1: add in about 35 DEG C of distilled water with the phospho-wolframic acid of starch total amount 5% and 0.2% Xylo-Mucine and mercaptosuccinic acid, reaction stirring 6 hours, described starch and mercaptosuccinic acid rub, the mol ratio of distilled water is 1:10:3, filter its reacted product, obtain filter cake, use distilled water flushing is clean, dry;

Step 2: by the acrylamide solution room temperature reaction 1 hour of powder starch and 20wt%, part by weight is 1:3, adds excessive methanol precipitation, and washing for several times, dry;

Step 3: get starch 100 weight part that step 1 and 2 obtains, both weight ratios are 2:5, add acrylamide 30 weight part, stir 30 minutes at 30 DEG C, then add activated carbon 1.0 weight part, sodium hydroxide 4 weight part, chitosan 6 weight part, by above-mentioned substance in a nitrogen atmosphere temperature remain on 50 DEG C of stirring reactions 2 hours, be then warmed up to 90 DEG C reaction 1 hour, discharging after naturally cooling.

Comparative example 4

Common hydroxymethyl starch 100 weight part, adds acrylamide 30 weight part, stirs 30 minutes, then add activated carbon 1.0 weight part, sodium hydroxide 4 weight part, chitosan 6 weight part, composite assistant 57 weight part at 30 DEG C.By above-mentioned substance in a nitrogen atmosphere temperature remain on 50 DEG C of stirring reactions 2 hours, be then warmed up to 90 DEG C reaction 1 hour, discharging after naturally cooling.

Wherein the difference of comparative example 1,2 and embodiment 1,2 is, comparative example 1 and comparative example 2 are for individually to use a kind of treated starch, and embodiment 1 and embodiment 2 are for employing composite modified starch.

The difference of comparative example 3 and embodiment 1 is that comparative example 3 does not use composite assistant.

Comparative example 4 only only used common modifications starch with the comparative example 4 that is distinguished as of embodiment 1.

List comparative example 1-4 in table 1,2 below, the clean effect data of embodiment 1, which includes suspended substance, COD, BOD are adding the value before and after flocculation agent.

Table 1

Table 2

Can be found out by above-mentioned numerical value, the product soil removability obtained when to use composite modified starch and composite assistant is simultaneously the strongest.That is can be found out to there is synergy between two kinds of treated starches and composite assistant, facilitate mutually the clean effect of the finished product by the data in table 1,2.

In addition comprise in a nitrogen atmosphere in preparation method of the present invention, also to the soil removability of the finished product, there is certain influence in the reaction times of specified temp.

beneficial effect

Therefore adopt of the present invention by using the treated starch of compound, and add composite assistant and obtain by controlling the technique means such as temperature of reaction in a nitrogen atmosphere the flocculation agent being obviously better than soil removability in prior art, compared with prior art there is the advantages such as COD, BOD removal effect is good, cost is low, product environment-friendly degradable.

Above-mentionedly only several specific embodiments in the present invention to be illustrated; but can not as protection scope of the present invention; every according to the change of the equivalence done by design spirit in the present invention or to modify or equal proportion zooms in or out, all should think and fall into protection scope of the present invention.

Claims (6)

1. process a dyeing and printing sewage composite high-molecular sewage treatment flocculating agent, it is characterized in that described flocculation agent is composed of the following components:
Acrylamide 15-30 weight part
Mixed and modified starch mixture 50-100 weight part
Activated carbon 0.2-1.0 weight part
Sodium hydroxide 1-4 weight part
Chitosan 3-6 weight part
Composite assistant 24-57 weight part.
2. one process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent according to claim 1, it is characterized in that, composite modified starch mixture is made up of mercaptosuccinic acid treated starch and acrylamide graft starch, and its weight ratio is 1:2-2:5.
3. one process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent according to claim 1, it is characterized in that, described composite assistant is made up of walnut shell flour 3-8 part, PAFS 10-20 part, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride 3-9 part, benzyl trimethyl ammonium chloride 8-20 part.
4. one process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent according to claim 2, it is characterized in that, described mercaptosuccinic acid treated starch adds with the Xylo-Mucine of the phospho-wolframic acid of starch total amount 5wt% and 0.2wt% and mercaptosuccinic acid in about 35 DEG C of distilled water by starch, reaction stirring 6 hours, described starch and mercaptosuccinic acid rub, the mol ratio of distilled water is 1:10:3, filter its reacted product, obtain filter cake, use distilled water flushing is clean, dry.
5. one process dyeing and printing sewage composite high-molecular sewage treatment flocculating agent according to claim 2, it is characterized in that described acrylamide graft starch is by the acrylamide solution room temperature reaction 1 hour of powder starch and 20wt%, weight ratio is 1:3, add excessive methanol precipitation, and use distilled water wash for several times, dry.
6. a kind of preparation method processing dyeing and printing sewage composite high-molecular sewage treatment flocculating agent according to claim 1-5, is characterized in that:
Step 1: add in about 35 DEG C of distilled water with the phospho-wolframic acid of starch total amount 5% and 0.2% Xylo-Mucine and mercaptosuccinic acid, reaction stirring 6 hours, described starch and mercaptosuccinic acid rub, the mol ratio of distilled water is 1:10:3, filter its reacted product, obtain filter cake, use distilled water flushing is clean, dry;
Step 2: by the acrylamide solution room temperature reaction 1 hour of powder starch and 20wt%, part by weight is 1:3, adds excessive methanol precipitation, uses distilled water wash for several times, dry;
Step 3: get the starch 50-100 weight part that step 1 and 2 obtains, both weight ratios are 1:2-2:5, add acrylamide 15-30 weight part, stir 30 minutes at 30 DEG C, then add activated carbon 0.2-1.0 weight part, sodium hydroxide 1-4 weight part, chitosan 3-6 weight part, composite assistant 24-57 weight part, by above-mentioned substance in a nitrogen atmosphere temperature remain on 40-50 DEG C of stirring reaction 2 hours, then 70-90 DEG C of reaction 1 hour is warmed up to, discharging after naturally cooling.
CN201510529741.3A 2015-08-26 2015-08-26 A kind of processing dyeing and printing sewage composite high-molecular sewage treatment flocculating agent and preparation method thereof CN105084499B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105688827A (en) * 2016-01-31 2016-06-22 常州大学 Application of porous starch/mercaptosuccinic acid composite xerogel to adsorption of gardenia yellow molecules in water
CN105776577A (en) * 2016-05-26 2016-07-20 许婷 Printing and dyeing wastewater treating agent and preparing method thereof
CN106277509A (en) * 2016-11-04 2017-01-04 金福兴 A kind of processing method containing azo dye wastewater
CN107828062A (en) * 2017-11-15 2018-03-23 顺德职业技术学院 Water-soluble di cation type polymer molecular brush dyestuff catches sedimentation agent and preparation method thereof and its application

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101503239A (en) * 2009-03-23 2009-08-12 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
CN103641247A (en) * 2013-12-27 2014-03-19 姚为 Domestic sewage treatment 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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101503239A (en) * 2009-03-23 2009-08-12 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
CN103641247A (en) * 2013-12-27 2014-03-19 姚为 Domestic sewage treatment 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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105688827A (en) * 2016-01-31 2016-06-22 常州大学 Application of porous starch/mercaptosuccinic acid composite xerogel to adsorption of gardenia yellow molecules in water
CN105688827B (en) * 2016-01-31 2017-11-10 常州大学 Porous-starch/thiomalic acid composite xerogel is applied to the Gardenia Yellow molecule in absorption water
CN105776577A (en) * 2016-05-26 2016-07-20 许婷 Printing and dyeing wastewater treating agent and preparing method thereof
CN106277509A (en) * 2016-11-04 2017-01-04 金福兴 A kind of processing method containing azo dye wastewater
CN107828062A (en) * 2017-11-15 2018-03-23 顺德职业技术学院 Water-soluble di cation type polymer molecular brush dyestuff catches sedimentation agent and preparation method thereof and its application

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