CN101525440B - Preparation method of high molecular compound polyacrylamide flocculant - Google Patents
Preparation method of high molecular compound polyacrylamide flocculant Download PDFInfo
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- CN101525440B CN101525440B CN 200910048826 CN200910048826A CN101525440B CN 101525440 B CN101525440 B CN 101525440B CN 200910048826 CN200910048826 CN 200910048826 CN 200910048826 A CN200910048826 A CN 200910048826A CN 101525440 B CN101525440 B CN 101525440B
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Abstract
The invention relates to a preparation method of a high molecular compound polyacrylamide flocculant. The method comprises the following steps: (1) respectively dissolving PAM1 with the molecular weight of 5-7 million and the ionic degree of 10-30%, PAM2 with the molecular weight of 6-8 million and the ionic degree of 30-50% and PAM3 with the molecular weight of 7-9 million and the ionic degree of 50-80% to prepare solutions with PAM1:PAM2:PAM3 mass ratio equal 0-30%:20-40%:30-60%; and (2) mixing substances in the step (1) at normal temperature and stirring evenly to obtain the flocculant. The preparation method is simple and has low cost; the prepared flocculant is easy to use and be applied at a time to purify sewage, which lowers COD, and reduces space, process steps and labor; and the flocculant can purify the sewage in different statuses by adjusting proportions of the PAM1, the PAM2 and the PAM3.
Description
Technical field
The invention belongs to the polyacrylamide flocculant field, particularly relate to a kind of preparation method of high molecular compound polyacrylamide flocculant.
Background technology
The research of chemical flocculation scientific theory and method is the important research field of water treatment always, also is one of requisite unit operation in the water treatment.Chemical flocculation mainly is to remove colloid and the suspended particle that is formed by insoluble substance in the water, has turbidity removal and removes the algae function; Have effects such as toxic organic compound, heavy metal, pathogenic microorganism and radioactive substance in the water of removal simultaneously, also can be used for sludge dewatering.For some dissolved matter, can adopt some method that it is become colloidalmaterial earlier, and then be removed with flocculence.In addition, in some cases, adsorptivity flocculation phenomenon can take place with some dissolved matter absorption in throwing out formed flco on it; But want directly to remove the solvability impurity in the water, also be difficult to obtain especially effectively result at present with single chemical flocculation method.
China municipal sewage plant uses Activated Sludge Process always; Flocculation agent has very important effect in wastewater treatment, it can be used for reducing the sense index such as turbidity, colourity of former water, removes multiple macromolecule organic; Some heavy metal and radioactive substance; It can have independently treatment system of one's own, can make up with other processing unit process again, as pre-treatment, intermediate treatment and final treating processes; But also be usually used in the concentration process before the sludge dewatering, to improve the dewatering of mud.
Water through after the flocculation agent harmless processing can reuse. and 1,000,000 tons of current domestic annual process waters, city water, WWT demand flocculation agent, therefore studying flocculation agent has very important meaning.
SEPIGEL 305 (PAM) has a macromolecular compound water-soluble with and main chain on active acyl group; Thereby have widely in industries such as oil production, water treatment, textile printing and dyeing, papermaking, ore dressing, coal washing, medicine, sugaring, breed, building materials, agriculturals and to use, the title of " all trades auxiliary agent ", " omnipotent product " is arranged.
The application of PAM in water treatment industry mainly comprises aspect 3 of former water treatment, WWT and the Treatment of Industrial Water.In former water treatment, PAM and gac etc. is used, and can be used for the cohesion and the clarification of suspended particle in the life water; In WWT.PAM can be used for sludge dewatering; In Treatment of Industrial Water, mainly as prescription medicament.In former water treatment, replace inorganic flocculating agent with organic floculant PAM, even do not transform settling bowl, the water purification ability also can improve more than 20%.So present many big and medium-sized cities when water supply gets or water quality are relatively poor, all adopt PAM as replenishing.In WWT, adopt PAM can increase water reuse round-robin rate of utilization.
But the general dispensing system that adopts of Sewage Plant is the three-box type automated dispensing system; The shortcoming of this system is that medicament does not also have dissolving fully (particularly temperature is lower than below 10 degree; And the dissolution time of medicament was generally more than 45 minutes) just begin the flocculation of entrance pressure filter and mud; Because dissolving does not cause failing to cause unnecessary waste with the mud flocculation for the dissolved medicament fully; Do not have the medicament of flocculation also can not glue filter cloth, cause sludge press filtration bad, and do not have the dissolved medicament to be mixed in the mud the inside also can to cause secondary pollution.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of high molecular compound polyacrylamide flocculant, and this preparation method is simple, and cost is low; The flocculation agent of preparation can once be thrown in decontamination; Through regulating PAM1, the ratio of PAM2 and PAM3 can purify the sewage of different states.
The preparation method of a kind of high molecular compound polyacrylamide flocculant of the present invention comprises:
(1) PAM1: (molecular weight is at 500-700 ten thousand for the high polymer polyacrylamide flocculation agent of processing preliminary sedimentation tank sewage; Ion degree is at 10-30%); PAM2: (molecular weight is at 600-800 ten thousand for the high polymer polyacrylamide flocculation agent of processing second pond sewage; Ion degree is at 30-50%), PAM3: the high polymer polyacrylamide flocculation agent (molecular weight is at 700-900 ten thousand, and ion degree is at 50-80%) of handling three heavy pond sewage; Wherein mass percent does, PAM1: PAM2: PAM3=0-30%: 20-40%: 30-60%; They are dissolved wiring solution-forming separately;
(2) material with step (1) mixes at normal temperatures, stirs, and promptly gets.
Described PAM1: PAM2: PAM3=1: 2: 3, be mass ratio.
Through regulating PAM1, the ratio of PAM2 and PAM3 can purify the sewage of different states, also can purify the sewage that other medicament can not purify.
Prepared high molecular compound polyacrylamide flocculant is got into stirred pot through dosing mouth shown in Figure 1, and the working method according to routine can obtain tap water then, has so promptly saved the space, has reduced process step again.
Beneficial effect
(1) preparation method of the present invention is simple, and cost is low;
(2) the prepared flocculation agent of the present invention is easy to use, can once throw in decontamination, has reduced COD, has saved the space, has reduced process step again, saves manpower.
Description of drawings
Fig. 1 workshop schema that dewaters.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
(1) PAM1: (molecular weight is at 500-700 ten thousand for the high polymer polyacrylamide flocculation agent of processing preliminary sedimentation tank sewage; Ion degree is at 10-30%), PAM2: the high polymer polyacrylamide flocculation agent (molecular weight is at 600-800 ten thousand, and ion degree is at 30-50%) of handling second pond sewage; PAM3: (molecular weight is at 700-900 ten thousand for the high polymer polyacrylamide flocculation agent of processing three heavy pond sewage; Ion degree is at 50-80%), wherein mass percent does, PAM1: PAM2: PAM3=5%: 35%: 60%; They are dissolved wiring solution-forming separately;
(2) material with step (1) mixes at normal temperatures, stirs, and promptly gets.
Embodiment 2
(1) PAM1: (molecular weight is at 500-700 ten thousand for the high polymer polyacrylamide flocculation agent of processing preliminary sedimentation tank sewage; Ion degree is at 10-30%), PAM2: the high polymer polyacrylamide flocculation agent (molecular weight is at 600-800 ten thousand, and ion degree is at 30-50%) of handling second pond sewage; PAM3: (molecular weight is at 700-900 ten thousand for the high polymer polyacrylamide flocculation agent of processing three heavy pond sewage; Ion degree is at 50-80%), wherein mass percent does, PAM1: PAM2: PAM3=10%: 40%: 50%; They are dissolved wiring solution-forming separately;
(2) material with step (1) mixes at normal temperatures, stirs, and promptly gets.
Embodiment 3
(1) PAM1: (molecular weight is at 500-700 ten thousand for the high polymer polyacrylamide flocculation agent of processing preliminary sedimentation tank sewage; Ion degree is at 10-30%), PAM2: the high polymer polyacrylamide flocculation agent (molecular weight is at 600-800 ten thousand, and ion degree is at 30-50%) of handling second pond sewage; PAM3: (molecular weight is at 700-900 ten thousand for the high polymer polyacrylamide flocculation agent of processing three heavy pond sewage; Ion degree is at 50-80%), wherein mass percent does, PAM1: PAM2: PAM3=30%: 15%: 55%; They are dissolved wiring solution-forming separately;
(2) material with step (1) mixes at normal temperatures, stirs, and promptly gets.
Claims (3)
1. the preparation method of a high molecular compound polyacrylamide flocculant comprises:
(1) molecular weight is that 500-700 ten thousand, ion degree are the PAM1 of 10-30%; Molecular weight is that 600-800 ten thousand, ion degree are the PAM2 of 30-50%; Molecular weight is that 700-900 ten thousand, ion degree are the PAM3 of 50-80%; Wherein mass percent does, PAM1: PAM2: PAM3=0-30%: 20-40%: 30-60%; They are dissolved wiring solution-forming separately;
(2) PAM1, PAM2 and the PAM3 solution with step (1) mixes at normal temperatures, stirs, and promptly gets.
2. the preparation method of a kind of high molecular compound polyacrylamide flocculant according to claim 1 is characterized in that: described PAM1: PAM2: PAM3=1: 2: 3, be mass ratio.
3. the preparation method of a kind of high molecular compound polyacrylamide flocculant according to claim 1 is characterized in that: through regulating PAM1, the ratio of PAM2 and PAM3 can purify the sewage of different states.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910048826 CN101525440B (en) | 2009-04-03 | 2009-04-03 | Preparation method of high molecular compound polyacrylamide flocculant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910048826 CN101525440B (en) | 2009-04-03 | 2009-04-03 | Preparation method of high molecular compound polyacrylamide flocculant |
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| Publication Number | Publication Date |
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| CN101525440A CN101525440A (en) | 2009-09-09 |
| CN101525440B true CN101525440B (en) | 2012-12-19 |
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| CN 200910048826 Expired - Fee Related CN101525440B (en) | 2009-04-03 | 2009-04-03 | Preparation method of high molecular compound polyacrylamide flocculant |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| AR108480A1 (en) * | 2016-05-27 | 2018-08-22 | Dow Global Technologies Llc | METHOD OF TREATMENT OF MINERAL SUSPENSIONS WITH HIGH CONTENT OF SOLIDS WITH POLYMER FLOCULANTS |
| CN106746484A (en) * | 2017-03-03 | 2017-05-31 | 上海绿美环保科技有限公司 | A kind of system of selection of environmentally friendly sludge dewatering preferred agents |
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2009
- 2009-04-03 CN CN 200910048826 patent/CN101525440B/en not_active Expired - Fee Related
Non-Patent Citations (8)
| Title |
|---|
| "The Effect of Anionic Polyacrylamide Molecular Conformation and Configuration on Flocculation Effectiveness";J.A.Caskey et al.;《Environmental Progress》;19860531;第5卷(第2期);第98-103页 * |
| "含油污泥絮凝试验及机理研究";任毛毛等;《化学工程师》;20081231;第159卷(第12期);第23-25页 * |
| "聚丙烯酰胺对氨水中有机悬浮物絮凝作用的研究";杨春光;《应用化工》;20060630;第35卷(第6期);第431-434页 * |
| "阳离子聚丙烯酰胺的制备及其净化含油污水的研究";赵娜娜等;《河北化工》;20070630;第30卷(第6期);第34-35页 * |
| J.A.Caskey et al.."The Effect of Anionic Polyacrylamide Molecular Conformation and Configuration on Flocculation Effectiveness".《Environmental Progress》.1986,第5卷(第2期), |
| 任毛毛等."含油污泥絮凝试验及机理研究".《化学工程师》.2008,第159卷(第12期), |
| 杨春光."聚丙烯酰胺对氨水中有机悬浮物絮凝作用的研究".《应用化工》.2006,第35卷(第6期), |
| 赵娜娜等."阳离子聚丙烯酰胺的制备及其净化含油污水的研究".《河北化工》.2007,第30卷(第6期), |
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