JPH0156811B2 - - Google Patents
Info
- Publication number
- JPH0156811B2 JPH0156811B2 JP59151676A JP15167684A JPH0156811B2 JP H0156811 B2 JPH0156811 B2 JP H0156811B2 JP 59151676 A JP59151676 A JP 59151676A JP 15167684 A JP15167684 A JP 15167684A JP H0156811 B2 JPH0156811 B2 JP H0156811B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- filtration
- water
- submersible pump
- solar drying
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 15
- 239000010802 sludge Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Description
【発明の詳細な説明】
本発明は、従来の天日乾燥床のろ過能力を、真
空圧により増大させ、汚泥の脱水効率の向上を計
らんとする装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for increasing the filtration capacity of a conventional solar drying bed by using vacuum pressure, thereby improving the efficiency of dewatering sludge.
従来の天日乾燥床は、設備が簡単で、作業が容
易で、建設費が安い反面、脱水効率が悪く、その
ため、広大な用地を必要とするのが大きな欠点と
されて来た。 Although conventional solar drying beds have simple equipment, are easy to work with, and have low construction costs, they have poor dewatering efficiency and therefore require a large amount of land, which has been considered a major drawback.
本発明は、天日乾燥床の、ろ過、沈降、蒸発の
脱水課程のうちのろ過能力を、真空圧を利用して
大巾に増大させ、従来の、大きな欠点を除去せん
とするものである。 The present invention aims to greatly increase the filtration capacity of the dehydration process of filtration, sedimentation, and evaporation of a solar drying bed by using vacuum pressure, and to eliminate the major drawbacks of the conventional method. .
次に、本発明の一実施例を、第１図より第４図
に基づいて説明する。 Next, one embodiment of the present invention will be described based on FIGS. 1 to 4.
本発明は、図の如く、底面にろ過層１と、その
下に集水管２を配し、汚泥３を貯留できるコンク
リート製の天日乾燥池４と、集水管２に連なり、
約10ｍ下位の一方の管内に、水中ポンプ５を内蔵
するＵ字管６とよりなる、真空圧による汚泥の脱
水装置である。 As shown in the figure, the present invention has a filtration layer 1 on the bottom and a water collection pipe 2 below it, which is connected to a concrete solar drying pond 4 that can store sludge 3 and the water collection pipe 2.
This is a sludge dewatering device using vacuum pressure, which consists of a U-shaped pipe 6 with a submersible pump 5 built into one pipe about 10 m below.
天日乾燥池４に汚泥３が搬入されると、ろ過層
１の空隙、集中管２内、Ｕ字管６内の空気は、ろ
過層１でろ過された汚泥３の含有水により追出さ
れ、空隙及び流管内は、ろ過された水で完全に満
たされる。しかる後、Ｕ字管６の一方の管内の水
中ポンプ５を運転し、同管内の排水を始める。 When the sludge 3 is carried into the solar drying pond 4, the air in the voids in the filtration layer 1, in the central pipe 2, and in the U-shaped pipe 6 is driven out by the water contained in the sludge 3 filtered by the filtration layer 1. , the voids and flow tubes are completely filled with filtered water. Thereafter, the submersible pump 5 in one of the U-shaped pipes 6 is operated to begin draining water inside the pipe.
水封されたろ過層１の空隙内の水位は、次第に
低下し、水位が、Ｕ字管６の他方の管の上端まで
下がると水中ポンプ５の運転を一端休止する。ろ
過水が排除されたろ過層１内の空隙は、図４の如
く、約10ｍの水頭差(h)で大気と遮断され、漏気の
全くない、間隙内温度相当の僅かな飽和水蒸気の
みが存在する、周囲を水封された真空々間とな
る。 The water level in the pores of the water-sealed filtration layer 1 gradually decreases, and when the water level drops to the upper end of the other U-shaped tube 6, the operation of the submersible pump 5 is temporarily stopped. The pores in the filter layer 1 from which the filtered water has been removed are isolated from the atmosphere with a water head difference (h) of about 10 m, as shown in Figure 4, and there is no air leakage, with only a small amount of saturated water vapor equivalent to the temperature inside the pores. It exists in a vacuum surrounded by water.
この状態を作り出すには、水中ポンプ５の排水
能力が、ろ過能力より大であらねばならないこと
は云うまでもない。 Needless to say, in order to create this condition, the drainage capacity of the submersible pump 5 must be greater than the filtration capacity.
かくしてできた真空圧は、従来の回転式ドラム
型ろ過機のろ過能力が示すように、従来の天日乾
燥床に較べ、大巾にろ過能力を増大することがで
きる。 The vacuum pressure created in this way can greatly increase the filtration capacity compared to a conventional solar drying bed, as shown by the filtration capacity of a conventional rotary drum type filter.
水中ポンプ５の運転休止中も、真空圧によりろ
過は進行し、真空に接する水位は徐々に上昇す
る。 Even when the submersible pump 5 is out of operation, filtration continues due to the vacuum pressure, and the water level in contact with the vacuum gradually rises.
図４の如く、真空々間が消滅しない程度の、一
定の高さ、水頭差（h′）の状態の水位まで上昇し
たら、水中ポンプ５の運転を再開し、水位が休止
前の水頭差(h)の状態に戻るまで排水を続ける。こ
の作業を繰返して汚泥の脱水作業を進める。 As shown in Fig. 4, when the water level rises to a certain height and head difference (h') that does not eliminate the vacuum gap, the operation of the submersible pump 5 is restarted, and the water level increases to the head difference (h') before stopping. Continue draining until the condition returns to h). This process is repeated to proceed with the sludge dewatering process.
本発明は、以上の如く実施できるので、従来の
天日乾燥床に、小型水中ポンプを内蔵するＵ字管
の簡単な設備の追加のみで、汚泥の大巾な脱水効
率を期待できるものである。 Since the present invention can be implemented as described above, it is possible to expect great sludge dewatering efficiency by simply adding a U-shaped pipe with a built-in small submersible pump to a conventional solar drying bed. .
従来の、回転式ドラム型真空ろ過機と、天日乾
燥床のろ過性能を、含水率95％の消化汚泥ろ過に
ついて比較すると、前者は、固形質量10Kg／m2・
ｈ年m2当りに換算すると約90t、後者は、年m2当
り65％の含水率汚泥量1.8m3、固形質量にすると
約1tで真空圧を利用する前者は、後者の約90倍、
従つて真空圧利用の本発明も大巾な脱水効果が期
待できるものである。 Comparing the filtration performance of a conventional rotary drum type vacuum filtration machine and a solar drying bed for digested sludge filtration with a water content of 95%, the former has a solid mass of 10 kg/m 2 .
Converted to approximately 90 tons per m2 per year, the latter has an amount of 1.8 m3 of sludge with a moisture content of 65% per m2 per year, and the former, which uses vacuum pressure, has a solid mass of approximately 1 t, which is approximately 90 times that of the latter.
Therefore, the present invention, which utilizes vacuum pressure, can also be expected to have a wide dehydration effect.
又、本発明は、下水汚泥の脱水のみならず、無
振動抗打工のベントナイト汚泥他、諸々の汚泥の
脱水にも容易に利用できるものである。 Furthermore, the present invention can be easily utilized not only for dewatering sewage sludge, but also for dewatering various sludges, including bentonite sludge produced by non-vibration casing.
第１図は、平面図、第２，３図は、Ａ−Ａ、Ｂ
−Ｂ断面図、第４図は、Ｕ字管詳細図、
符号説明、１……ろ過層、２……集水管、３…
…汚泥、４……天日乾燥池、５……水中ポンプ、
６……Ｕ字管。
Figure 1 is a plan view, Figures 2 and 3 are A-A and B.
-B sectional view, Figure 4 is a detailed view of the U-shaped pipe, symbol explanation, 1...filtration layer, 2...water collection pipe, 3...
…Sludge, 4…Solar drying pond, 5…Submersible pump,
6...U-shaped tube.
Claims (1)
し、汚泥３を貯留できる天日乾燥池４と、集水管
２に連なり、約10ｍ下位の一方の管内に、水中ポ
ンプ５を内蔵するＵ字管６で構成される真空圧に
よる汚泥等の脱水装置。1 A filtration layer 1 is placed on the bottom, a water collection pipe 2 is placed below it, and a solar drying pond 4 that can store sludge 3 is connected to the water collection pipe 2, with a built-in submersible pump 5 in one of the pipes approximately 10 m below. A dewatering device for sludge, etc. using vacuum pressure, which is composed of a U-shaped pipe 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15167684A JPS6133205A (en) | 1984-07-20 | 1984-07-20 | Dehydrator for sludge or the like by vacuum pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15167684A JPS6133205A (en) | 1984-07-20 | 1984-07-20 | Dehydrator for sludge or the like by vacuum pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6133205A JPS6133205A (en) | 1986-02-17 |
| JPH0156811B2 true JPH0156811B2 (en) | 1989-12-01 |
Family
ID=15523809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15167684A Granted JPS6133205A (en) | 1984-07-20 | 1984-07-20 | Dehydrator for sludge or the like by vacuum pressure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6133205A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH022808A (en) * | 1988-06-16 | 1990-01-08 | Ito Seisakusho:Kk | Method and device for draining sand |
| JPH082437B2 (en) * | 1989-12-28 | 1996-01-17 | 三谷セキサン株式会社 | High concentration mud water treatment method and dehydrator |
-
1984
- 1984-07-20 JP JP15167684A patent/JPS6133205A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6133205A (en) | 1986-02-17 |
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