JPS5851997A - Method of dehydrating sludge - Google Patents
Method of dehydrating sludgeInfo
- Publication number
- JPS5851997A JPS5851997A JP56147962A JP14796281A JPS5851997A JP S5851997 A JPS5851997 A JP S5851997A JP 56147962 A JP56147962 A JP 56147962A JP 14796281 A JP14796281 A JP 14796281A JP S5851997 A JPS5851997 A JP S5851997A
- Authority
- JP
- Japan
- Prior art keywords
- organic
- metal compound
- multivalent metal
- sodium alginate
- sludge
- 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.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 7
- 150000002736 metal compounds Chemical class 0.000 claims abstract description 8
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 7
- 239000000661 sodium alginate Substances 0.000 claims abstract description 7
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 7
- 239000010842 industrial wastewater Substances 0.000 claims abstract description 4
- 239000010865 sewage Substances 0.000 claims abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 208000005156 Dehydration Diseases 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 239000010800 human waste Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229920000620 organic polymer Polymers 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 3
- 239000000920 calcium hydroxide Substances 0.000 abstract description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 3
- 235000011116 calcium hydroxide Nutrition 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001577 copolymer Polymers 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 abstract description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 abstract 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 229940117913 acrylamide Drugs 0.000 abstract 1
- 244000144992 flock Species 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
- 238000007796 conventional method Methods 0.000 description 4
- 238000009264 composting Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229920002401 polyacrylamide Polymers 0.000 description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 229920001059 synthetic polymer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000001341 alkaline earth metal compounds Chemical class 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、有機性汚泥の機械脱水処理法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for mechanical dewatering of organic sludge.
脱水ケーキを最終処分したりコンポスト化する場合、脱
水ケーキの含水率が高いと次のような問題点が生じる。When the dehydrated cake is finally disposed of or composted, the following problems arise if the moisture content of the dehydrated cake is high.
（イ）脱水ケーキの容積が大きくなり、運搬費用が増大
し投棄用の土地面積が広くなり投棄費用も−１−Ａ＾１
かさむ。(b) The volume of the dehydrated cake increases, transportation costs increase, the land area for dumping becomes larger, and the dumping cost increases by -1-A^1.
（ロ）乾燥・焼却処分する場合、補助燃料経費がかさむ
。(b) When drying and incinerating, the cost of auxiliary fuel increases.
（ハ）脱水ケーキのハンドリングが面倒になる。(c) Handling the dehydrated cake becomes troublesome.
に） コンポスト化する場合含水率を６５％以下とする
必要があるが、乾燥工程を必要としたり、もみがら、お
がくず等の混ぜ物を必要とする。(b) When composting, the moisture content must be kept below 65%, but this requires a drying process and the addition of mixtures such as rice husks and sawdust.
本発明は、このような問題点を解消するため従来の方法
と比較して低含水率のケーキを得ることができる汚泥脱
水方法を提供することを目的とするものであり、下水、
し尿その他産業廃水から生じる有機性汚泥に多価金属化
合物およびアルギン酸ソーダを添加したのち、さらに有
機高分子凝集剤を添加して該汚泥を調質して機械脱水処
理することを特徴とする汚泥の脱水処理法である。In order to solve these problems, the present invention aims to provide a sludge dewatering method that can obtain a cake with a lower water content compared to conventional methods.
A method of producing sludge characterized by adding a polyvalent metal compound and sodium alginate to organic sludge produced from human waste and other industrial wastewater, and then further adding an organic polymer flocculant to refine the sludge and subjecting it to mechanical dewatering. This is a dehydration treatment method.
本発明の実施態様を説明すると、有機性汚泥にまず多価
金属化合物を添加し、よく混合する。前記多価金属化合
物の具体例としてはポリ硫酸鉄。To explain an embodiment of the present invention, a polyvalent metal compound is first added to organic sludge and mixed well. A specific example of the polyvalent metal compound is polyferrous sulfate.
硫酸第２鉄、硫酸第１鉄、塩化第２鉄などの鉄化合物、
消石灰、塩化カルシウム、水酸化マグネシー ２ ＝
ラムなど、のアルカリ土類金属化合物、ポリ塩化アルミ
ニウム、硫酸パン土などのアルミニウム化合物などがあ
げられるが、好ましくは鉄系化合物がよい。Iron compounds such as ferric sulfate, ferrous sulfate, ferric chloride,
Examples include alkaline earth metal compounds such as slaked lime, calcium chloride, and magnesium hydroxide, and aluminum compounds such as polyaluminum chloride and sulfuric acid clay. Preferably, iron-based compounds are used.
次に攪拌しながらアルギン酸ソーダを加え、多価金属と
アルギン酸ソーダとの繊維を形成させると共に凝集させ
る。なお、この添加順序を変えても何ら支障はなく、ま
た同時に添加してもよい。Next, sodium alginate is added while stirring to form and aggregate fibers of the polyvalent metal and sodium alginate. Note that there is no problem even if the order of addition is changed, and they may be added at the same time.
次に、微細フロックを有機合成高分子凝集剤を添加する
ことにより大きく、堅固なフロック（あるいはベレット
）とし、ロールプレス、加圧脱水機。Next, the fine flocs are made into large, firm flocs (or pellets) by adding an organic synthetic polymer flocculant, and then processed using a roll press and pressure dehydrator.
スクリュウプレス、遠心脱水機などの機械脱水機にかけ
脱水する。有機合成高分子凝集剤としては例えばアクリ
ルアミド、アクリル酸ソーダ共重合物、変性ポリアクリ
ルアミド、ポリアクリルアミドの部分加水分解物、ポリ
アクリルアミド、ポリエチレンイミン、ポリアミン、ポ
リアクリル酸ソーダなどが使用できる。Dehydrate by using a mechanical dehydrator such as a screw press or centrifugal dehydrator. Examples of organic synthetic polymer flocculants that can be used include acrylamide, sodium acrylate copolymer, modified polyacrylamide, partially hydrolyzed polyacrylamide, polyacrylamide, polyethyleneimine, polyamine, and sodium polyacrylate.
次に、本発明の実施例を下表に示す。なお、供試汚泥は
し尿余剰汚泥で汚泥濃度は２６Ｖｔである。Next, examples of the present invention are shown in the table below. The sludge under test was excrement surplus sludge, and the sludge concentration was 26Vt.
が本発明によるものであり、いずれも加圧脱水機により
試験した。are according to the present invention, and all were tested using a pressure dehydrator.
上表に示したとうり、本発明によれば大幅な含水率の低
下がみられた。その結果、流動焼却炉で焼却する場合、
従来法では１６７ Ｉ／ｌ−ｎ、ｓ ｔ １１６１Ｌ／
ｌ−ｎ、ｓの助燃油を必要とするのに対し、本発明によ
ればＰＡＣを使用した場合で４ＫＶｔ−Ｄ、８１その他
では自燃域に入り助燃油を全く必要とせず焼却に要する
経費が大幅に節減できる。また、塩化第２鉄、消石灰を
使用した場合焼却灰がかなり増量するが、本発明によれ
ばわずかな増量にすぎず、焼却灰の運搬・処分費用も節
減可能となる。As shown in the table above, according to the present invention, a significant decrease in water content was observed. As a result, when incinerating in a fluidized incinerator,
In the conventional method, 167 I/l-n, s t 1161L/
According to the present invention, when PAC is used, 4KVt-D, 81 and others are in the self-combustion range and do not require any auxiliary oil, reducing the cost of incineration. Significant savings can be made. Further, when ferric chloride and slaked lime are used, the amount of incinerated ash increases considerably, but according to the present invention, the amount increases only slightly, and the cost of transporting and disposing of incinerated ash can be reduced.
一方、汚泥をコンポスト化する場合、ケーキ含水率を６
５チ以下にすることが要求されており、従来法によれば
乾燥あるいはもみがら、おがくず等の混ぜ物をする必要
がある。しかし本発明によれば、含水率は６５％以下で
あり、全く前述の操作を必要とせずコンポスト化できる
。On the other hand, when composting sludge, the moisture content of the cake is 6
It is required to be less than 5 inches, and conventional methods require drying or mixing with rice husks, sawdust, etc. However, according to the present invention, the moisture content is 65% or less, and composting can be performed without any of the above-mentioned operations.
また、脱水ケーキを埋立・投棄処分する場合においても
、本発明によれば従来法に比較してケーキの減容化がで
きることにより運搬・投棄費用が安価となる。Further, even when the dehydrated cake is disposed of in a landfill or dumped, the present invention allows the volume of the cake to be reduced compared to the conventional method, thereby reducing transportation and dumping costs.
以上のように、本発明により簡便な操作で的確に低含水
率ケーキを得ることができ、幾多のメリットが生じる。As described above, according to the present invention, a low moisture content cake can be accurately obtained with a simple operation, resulting in numerous advantages.
特許出願人 荏原インフィルコ株式会社代理人弁理士
端 山 五 −
同 千 １） 稔 ７
−
４９９−Patent applicant: Patent attorney representing Ebara Infilco Co., Ltd.
Hayama 5 - 1,000 1) Minoru 7
-499-
Claims (1)
に多価金属化合物およびアルギン酸ソーダを添加したの
ち、さらに有機高分子凝集剤を添加して該汚泥を調質し
て機械脱水処理することを特徴とする汚泥の脱水処理法
。 ２、上記多価金属化合物として鉄系化合物を用いる特許
請求の範囲第１項記載の脱水処理法。[Claims] 1. After adding a polyvalent metal compound and sodium alginate to organic sludge generated from sewage, human waste, and other industrial wastewater, an organic polymer flocculant is further added to refine the sludge, and the sludge is machined. A sludge dewatering method characterized by dewatering. 2. The dehydration treatment method according to claim 1, wherein an iron-based compound is used as the polyvalent metal compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56147962A JPS5851997A (en) | 1981-09-21 | 1981-09-21 | Method of dehydrating sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56147962A JPS5851997A (en) | 1981-09-21 | 1981-09-21 | Method of dehydrating sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5851997A true JPS5851997A (en) | 1983-03-26 |
Family
ID=15442018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56147962A Pending JPS5851997A (en) | 1981-09-21 | 1981-09-21 | Method of dehydrating sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5851997A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966713A (en) * | 1989-04-13 | 1990-10-30 | Fmc Corporation | Process for the treatment of waste water from food processing plants |
| KR20000024296A (en) * | 2000-02-03 | 2000-05-06 | 정무웅 | emulsion type weist water treatment |
| CN101863611A (en) * | 2010-06-13 | 2010-10-20 | 东南大学 | Method for deeply dehydrating sludge |
| CN102627386A (en) * | 2012-04-10 | 2012-08-08 | 无锡国联环保科技有限公司 | Method for adding conditioner for dehydrating sludge |
| CN108905965A (en) * | 2018-07-04 | 2018-11-30 | 桂林理工大学 | The method that sludge bioleaching-pyrolysis Combined Treatment prepares heavy metal absorbent |
-
1981
- 1981-09-21 JP JP56147962A patent/JPS5851997A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966713A (en) * | 1989-04-13 | 1990-10-30 | Fmc Corporation | Process for the treatment of waste water from food processing plants |
| KR20000024296A (en) * | 2000-02-03 | 2000-05-06 | 정무웅 | emulsion type weist water treatment |
| CN101863611A (en) * | 2010-06-13 | 2010-10-20 | 东南大学 | Method for deeply dehydrating sludge |
| CN102627386A (en) * | 2012-04-10 | 2012-08-08 | 无锡国联环保科技有限公司 | Method for adding conditioner for dehydrating sludge |
| CN108905965A (en) * | 2018-07-04 | 2018-11-30 | 桂林理工大学 | The method that sludge bioleaching-pyrolysis Combined Treatment prepares heavy metal absorbent |
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