JPS62193607A - High molecular flocculant composition - Google Patents
High molecular flocculant compositionInfo
- Publication number
- JPS62193607A JPS62193607A JP61033943A JP3394386A JPS62193607A JP S62193607 A JPS62193607 A JP S62193607A JP 61033943 A JP61033943 A JP 61033943A JP 3394386 A JP3394386 A JP 3394386A JP S62193607 A JPS62193607 A JP S62193607A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- high molecular
- flocculant composition
- molecular flocculant
- polyacrylamide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 8
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 7
- 229920001661 Chitosan Polymers 0.000 claims abstract description 5
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract 4
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000010802 sludge Substances 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000018044 dehydration Effects 0.000 abstract description 4
- 238000006297 dehydration reaction Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 2
- 125000002091 cationic group Chemical group 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006317 cationic polymer Polymers 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はカチオン性高分子凝集剤組成物に関するもので
あり、各種廃水の生物処理工程より発生する有機性汚泥
の脱水に用いられる。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cationic polymer flocculant composition, which is used for dewatering organic sludge generated from biological treatment processes of various wastewaters.
（従来の技術）
ポリアクリルアミドマンニッヒ変性物は従来より汚泥脱
水用高分子凝集剤として用いられている。(Prior Art) Mannich-modified polyacrylamide has been conventionally used as a polymer flocculant for sludge dewatering.
（発明が解決しようとする問題点）
ポリアクリルアミドマンニッヒ変性物は大きなフロック
を生じ初期沢水性は良いもののケーキ含水率が高い欠点
が有る。又、汚泥のＰＨが６以上になると凝集効果が低
下する。(Problems to be Solved by the Invention) Mannich-modified polyacrylamide produces large flocs and has good initial water repellency, but has the drawback of high cake moisture content. Furthermore, when the pH of the sludge becomes 6 or higher, the flocculation effect decreases.
（問題を解決する為の手段）
ポリアクリルアミドマンニッヒ変性物１重量部に対し、
キトザン０．４〜０．６重量部、スルファミン酸１．０
〜２．５重量部を混合する事により、汚泥脱水時の初期
Ｐ水性と脱水ケーキの含水率低下を同時に満足させる汚
泥脱水用高分子凝集剤組成物を得る事ができる。(Means for solving the problem) For 1 part by weight of polyacrylamide Mannich modified product,
Chitozan 0.4-0.6 parts by weight, sulfamic acid 1.0
By mixing ~2.5 parts by weight, it is possible to obtain a polymer flocculant composition for sludge dewatering that simultaneously satisfies the initial P aqueous property during sludge dewatering and the reduction in water content of the dehydrated cake.
本発明に用いるポリアクリルアミドマンニッヒ変性物は
ＰＨ３におけるカチオン当量値が３ｍｅｑ／ｆ以上であ
り、固有粘度が４ｄｔ／ｆ以上である事が望ましい。It is desirable that the polyacrylamide Mannich-modified product used in the present invention has a cation equivalent value of 3 meq/f or more at PH3 and an intrinsic viscosity of 4 dt/f or more.
キトサンは通常汚泥脱水に使用されているカチオン当量
３．５〜４．５ ｍｅ ｑ／７の加水分解率の製品をそ
のまま使用できる。As chitosan, a product with a hydrolysis rate of cation equivalent of 3.5 to 4.5 meq/7, which is normally used for sludge dewatering, can be used as is.
以下実施例により本発明を具体的に説明する。The present invention will be specifically explained below using Examples.
（実施例） 脱水試験に供した凝集剤の組成を表−１に示す。(Example) Table 1 shows the composition of the flocculant used in the dehydration test.
表−１
（脱水試１！！ｊ＋）
下水処理汚泥（ＰＨ： ５．０． Ｓ Ｓ ： ２．９
％、灰分：４０％）に凝集剤を添加し、ベルトプレスに
より脱水した試験結果を表−２及び表−３に示す。（プ
レス圧カニ２Ｋｐ／ｃｒｄ、汚泥供給量： ６ ｍ’／
ｍ、 ｈｒ、 ｆ’布敷島キャンパスＩｊ７ＦＮ１１０
１−ＸＢ）
表−２実施例
表−３比較例
（効 果）
脱水試験の結果で明白な様にキトサンは凝集フロックが
小さく初１θ］ｆ水が悪い。マンニッヒ化ＦＡＡは凝集
フロックは大きく濾過脱水はできるものの、本発明の組
成比をはずれた比較例ではいずれも含水率は７５％以上
であるのに対し本発明実施例においては全て７５％以下
であり車？水性の良さを物胎っている。含水率がこの様
に下がると汚泥脱水ケーキの性状も固くなり、燃焼又は
コンポスト化において空気との接触が良くなり効率が改
善される。Table-1 (Dehydration test 1!!j+) Sewage treatment sludge (PH: 5.0. SS: 2.9
%, ash content: 40%), a flocculant was added, and the test results were dehydrated using a belt press. Tables 2 and 3 show the test results. (Press pressure crab 2Kp/crd, sludge supply amount: 6 m'/
m, hr, f'Fushikishima Campus Ij7FN110
1-XB) Table 2 Examples Table 3 Comparative Examples (Effects) As is clear from the results of the dehydration test, chitosan has small flocs and poor initial 1θ]f water. Although Mannich-formed FAA has large flocs and can be filtered and dehydrated, the water content is 75% or more in all of the comparative examples that differ from the composition ratio of the present invention, whereas it is 75% or less in all of the examples of the present invention. car? It has the goodness of water-based properties. This reduction in water content also makes the sludge dewatered cake harder, allowing better air contact and improved efficiency during combustion or composting.
Claims (1)
末及びスルファミン酸を１：０．４〜０．６：１．０〜
２．５の重量比率で混合する事からなる高分子凝集剤組
成物。Polyacrylamide Mannich modified powder, chitosan powder and sulfamic acid at 1:0.4~0.6:1.0~
A polymer flocculant composition comprising mixing at a weight ratio of 2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61033943A JPS62193607A (en) | 1986-02-20 | 1986-02-20 | High molecular flocculant composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61033943A JPS62193607A (en) | 1986-02-20 | 1986-02-20 | High molecular flocculant composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62193607A true JPS62193607A (en) | 1987-08-25 |
| JPH0557006B2 JPH0557006B2 (en) | 1993-08-23 |
Family
ID=12400588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61033943A Granted JPS62193607A (en) | 1986-02-20 | 1986-02-20 | High molecular flocculant composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62193607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384263A (en) * | 2015-12-07 | 2016-03-09 | 湖北地大热能科技有限公司 | Sulfamic acid modified chitosan water scale inhibitor and preparation method thereof |
| CN108083613A (en) * | 2017-12-27 | 2018-05-29 | 广州再森新材料科技有限公司 | A kind of sewage sludge high-efficiency dehydration agent and its preparation method and application |
-
1986
- 1986-02-20 JP JP61033943A patent/JPS62193607A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384263A (en) * | 2015-12-07 | 2016-03-09 | 湖北地大热能科技有限公司 | Sulfamic acid modified chitosan water scale inhibitor and preparation method thereof |
| CN108083613A (en) * | 2017-12-27 | 2018-05-29 | 广州再森新材料科技有限公司 | A kind of sewage sludge high-efficiency dehydration agent and its preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0557006B2 (en) | 1993-08-23 |
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