JPH01275489A - Device for composting sludge - Google Patents
Device for composting sludgeInfo
- Publication number
- JPH01275489A JPH01275489A JP10405688A JP10405688A JPH01275489A JP H01275489 A JPH01275489 A JP H01275489A JP 10405688 A JP10405688 A JP 10405688A JP 10405688 A JP10405688 A JP 10405688A JP H01275489 A JPH01275489 A JP H01275489A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- fermenter
- fertilizer
- dried
- reduced
- 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 31
- 238000009264 composting Methods 0.000 title claims abstract description 9
- 239000003337 fertilizer Substances 0.000 claims abstract description 19
- 238000000855 fermentation Methods 0.000 claims abstract description 14
- 230000004151 fermentation Effects 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 abstract description 6
- 241000894006 Bacteria Species 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 244000052616 bacterial pathogen Species 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 238000010564 aerobic fermentation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 238000011218 seed culture Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明は、蒸発加熱により乾燥した脱水汚泥を発酵槽で
発酵させ肥料化する汚泥のコンポスト装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention (Industrial Field of Application) The present invention relates to a sludge composting apparatus that ferments dehydrated sludge dried by evaporative heating in a fermentation tank and converts it into fertilizer.
（従来の技術）
従来、汚泥を肥料化する場合は、１ａ械脱水機にて約８
０〜７０％の含水率まで脱水を行なった脱水ケーキを発
酵槽に投入し好気性発酵を行い有機物を分解安定化させ
て、肥料として利用している。(Conventional technology) Conventionally, when converting sludge into fertilizer, approximately 8
The dehydrated cake, which has been dehydrated to a moisture content of 0 to 70%, is put into a fermenter and subjected to aerobic fermentation to decompose and stabilize organic matter, which is used as fertilizer.
（発明が解決しようとする課Ｍ） ところが機械脱水機で脱水した脱水ケーキは。(Problem M that the invention seeks to solve) However, the dehydrated cake that was dehydrated with a mechanical dehydrator.
含水率が高いため発酵槽での有機物の分解が効率良くで
きない、従って含水率を低下させ、かつ空気の流通性を
向上させるために、もみがら、または、おがくず等の添
加剤を脱水ケーキにまぜて発酵を行っている。そのため
、添加剤の価格が肥料製造価格に加わり、また出来上が
った肥料を水田に施用する場合は、おがくずが浮遊する
などの不具合があり、かつ地域によっては、添加剤の供
給が必ずしも安定していないため添加剤の使用は好まし
いことではない。Due to the high moisture content, organic matter cannot be decomposed efficiently in the fermenter. Therefore, in order to reduce the moisture content and improve air circulation, additives such as rice husks or sawdust are mixed with the dehydrated cake. fermentation is carried out. Therefore, the price of additives is added to the fertilizer manufacturing price, and when the finished fertilizer is applied to paddy fields, there are problems such as floating sawdust, and in some regions, the supply of additives is not always stable. Therefore, the use of additives is not preferred.
また、脱水ケーキには１種々の雑菌が含まれているなめ
そのままでは必ずしも発酵槽での発酵が効率よく行われ
ないため１発酵した肥料の一部を種菌として発酵槽の入
口に戻し発酵効率を高めている。従って脱水汚泥に含ま
れる雑菌が多いほど多量の肥料を発酵槽の入口に返送す
ることになり発酵効率が下がることになる。In addition, since the dehydrated cake contains various types of bacteria, fermentation in the fermenter will not necessarily take place efficiently if it is left as it is, so a portion of the fermented fertilizer is returned to the inlet of the fermenter as a starter to increase fermentation efficiency. It's increasing. Therefore, the more germs contained in the dehydrated sludge, the more fertilizer will be returned to the inlet of the fermenter, resulting in lower fermentation efficiency.
本発明は、汚泥コンポスト化の効率を向上させることを
目的とする。The present invention aims to improve the efficiency of sludge composting.
［発明の構成］
（課題を解決するための手段）
本発明は機械脱水機の代わりに汚泥乾燥機を使用した汚
泥のコンポスト装置である。[Structure of the Invention] (Means for Solving the Problems) The present invention is a sludge composting apparatus that uses a sludge dryer instead of a mechanical dehydrator.
（作用）
発酵槽は発酵に最も適した含水率（約７０％〜５０％）
で、かつ加熱乾燥することにより雑菌の少ない汚泥を発
酵槽で発酵させる。(Function) The fermenter has the most suitable moisture content for fermentation (approximately 70% to 50%)
By heating and drying the sludge, it is fermented in a fermentation tank with less bacteria.
（実施例） 以下本発明を第１図に示ず一実施例について説明する。(Example) The present invention will be described below with reference to an embodiment not shown in FIG.
汚泥スラッジ１３を乾燥機１１で蒸発乾燥した乾燥汚泥
１５を発酵槽１２に投入し２発酵槽内で前記乾燥汚泥を
好気性発酵させ有機物を分解し安定した肥料１４を製造
する。Dried sludge 15 obtained by evaporating and drying sludge 13 in a dryer 11 is put into a fermenter 12, and the dried sludge is aerobically fermented in the second fermenter to decompose organic matter and produce a stable fertilizer 14.
同時に発酵槽で製造された肥料の一部を発酵槽入口に返
送することにより返送肥料１６が種菌として作用する。At the same time, by returning a portion of the fertilizer produced in the fermenter to the inlet of the fermenter, the returned fertilizer 16 acts as a seed culture.
従って発酵槽に投入する汚泥の含水率を最も発酵に適し
た含水率に低下させることにより添加剤を加える必要が
なくなるため２発酵槽を従来と比べて小さくすることが
可能となり、肥料の製造価格の低減が図れる。また乾燥
機は、高温（１００’Ｃ以上）で汚泥を加熱乾燥するた
めに汚泥に含まれる雑菌の量が低減される。従って発酵
槽での返送肥料による稲苗の効果が向上し、返送肥料の
量を低減することが可能となり発酵効率の向上が図れる
。Therefore, by lowering the water content of the sludge fed into the fermenter to the water content most suitable for fermentation, there is no need to add additives, making it possible to make the two fermenters smaller than before, and the production cost of fertilizer increases. can be reduced. Further, since the dryer heats and dries the sludge at a high temperature (100'C or higher), the amount of germs contained in the sludge is reduced. Therefore, the effect of the returned fertilizer on rice seedlings in the fermenter is improved, the amount of returned fertilizer can be reduced, and the fermentation efficiency can be improved.
［発明の効果］
以上本発明によれば９発酵に最も適した含水率（約７０
％〜５０％）で、かつ加熱乾燥することにより雑菌の少
ない汚泥を発酵槽で発酵さぜることになり、効率の良い
汚泥のコンポスト装置が供給される。[Effects of the Invention] According to the present invention, the moisture content most suitable for 9 fermentation (approximately 70
% to 50%), and by heating and drying, sludge containing few germs is fermented in a fermentation tank, and an efficient sludge composting device is provided.
第１図は本発明の一実施例を示すコンポスト装置の構成
図である。
１１・・・・・・乾燥機
１２・・・・・・発酵槽
１３・・・・・・汚泥スラッジ
１４・・・・・・肥料FIG. 1 is a configuration diagram of a composting apparatus showing an embodiment of the present invention. 11...Dryer 12...Fermentation tank 13...Sludge sludge 14...Fertilizer
Claims (1)
機で乾燥した乾燥汚泥を発酵させ肥料化する発酵槽とで
構成される汚泥のコンポスト装置。This sludge composting device consists of a dryer that evaporates and dries sludge using steam heating, and a fermentation tank that ferments the dried sludge dried in the dryer and turns it into fertilizer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10405688A JPH01275489A (en) | 1988-04-28 | 1988-04-28 | Device for composting sludge |
| US07/343,588 US5079852A (en) | 1988-04-28 | 1989-04-27 | Sludge treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10405688A JPH01275489A (en) | 1988-04-28 | 1988-04-28 | Device for composting sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01275489A true JPH01275489A (en) | 1989-11-06 |
Family
ID=14370535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10405688A Pending JPH01275489A (en) | 1988-04-28 | 1988-04-28 | Device for composting sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01275489A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0810742A (en) * | 1994-06-28 | 1996-01-16 | Ito Seikan Kogyo Kk | Fermentation treatment of organic waste and device therefor |
| EP2155629A1 (en) * | 2007-04-19 | 2010-02-24 | Savaterra OY | Method of producing fertilizer out of sludge |
-
1988
- 1988-04-28 JP JP10405688A patent/JPH01275489A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0810742A (en) * | 1994-06-28 | 1996-01-16 | Ito Seikan Kogyo Kk | Fermentation treatment of organic waste and device therefor |
| EP2155629A1 (en) * | 2007-04-19 | 2010-02-24 | Savaterra OY | Method of producing fertilizer out of sludge |
| EP2155629A4 (en) * | 2007-04-19 | 2014-10-29 | Savaterra Oy | Method of producing fertilizer out of sludge |
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