JPH044879Y2 - - Google Patents
Info
- Publication number
- JPH044879Y2 JPH044879Y2 JP16077085U JP16077085U JPH044879Y2 JP H044879 Y2 JPH044879 Y2 JP H044879Y2 JP 16077085 U JP16077085 U JP 16077085U JP 16077085 U JP16077085 U JP 16077085U JP H044879 Y2 JPH044879 Y2 JP H044879Y2
- Authority
- JP
- Japan
- Prior art keywords
- tank body
- tank
- water
- containing solids
- aeration
- 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 24
- 239000007787 solid Substances 0.000 claims description 23
- 238000005273 aeration Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000010802 sludge Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、汚水処理において発生する汚泥、そ
の他の粒状、フレーク状の含水固形物を省エネル
ギー的に乾燥することが可能な、新規な構造の通
気乾燥装置に関するものである。[Detailed description of the invention] [Field of industrial application] The present invention is a novel structure that can dry sludge and other granular and flaky water-containing solids generated in sewage treatment in an energy-saving manner. This invention relates to an aeration drying device.
従来の通気乾燥装置（通気バンド乾燥器が代表
的機種）は、乾燥用の温風を供給するブロワーの
吐出圧が数100mmAq以下であるため、含水固形物
の供給部や乾燥物の排出部からのリークガス量は
問題にならず、そのため含水固形物の供給部、乾
燥物の排出部の構造に格別の工夫を要することな
く、ロータリーバルブ、スクリユーフイーダなど
のガスシール性が不十分な開閉機構でも十分対応
することができた。
In conventional ventilation drying equipment (the typical model being a ventilation band dryer), the discharge pressure of the blower that supplies warm air for drying is several hundred mmAq or less. The leakage gas amount is not a problem, and therefore no special measures are required for the structure of the wet solids supply section and dry matter discharge section, and the opening and closing of rotary valves, screw feeders, etc. with insufficient gas sealing properties can be avoided. The organization was also able to respond adequately.
しかしながら、下水、し尿などの活性汚泥処理
工程のエアレーシヨンタンクに曝気用空気を供給
するための曝気ブロワー吐出空気の圧縮熱（温度
60〜90℃程度）を利用して、含水固形物の乾燥を
行おうとすると、曝気ブロワー吐出空気の圧力
は、エアレーシヨンタンクにおける散気水深が５
ｍの場合には、ゲージ圧0.6〜0.7Kgｆ／cm2程度の
圧力となる。したがつて、ゲージ圧力が0.1Kg
ｆ／cm2以下の温風が供給される従来の通気乾燥装
置では、含水固形物の供給部と乾燥物の排出部か
らの多量の空気がリークしてしまい、採用不可能
であつた。さらに、通気乾燥装置内にはゲージ圧
0.6Kgｆ／cm2程度の圧力が加わるため、装置内に
含水固形物供給するときや、乾燥物を排出すると
きに、多量の空気が系外に放出される結果、エア
レーシヨンタンクに曝気用の空気を供給すること
ができなくなるので、その対策をたてる必要があ
る。
However, the heat of compression (temperature
When attempting to dry water-containing solids using a temperature of approximately 60 to 90°C, the pressure of the air discharged from the aeration blower will be lower than the depth of the aeration water in the aeration tank.
In the case of m, the pressure is about 0.6 to 0.7 Kgf/cm 2 in gauge pressure. Therefore, the gauge pressure is 0.1Kg
Conventional aerated drying equipment in which hot air of less than f/cm 2 is supplied cannot be used because a large amount of air leaks from the supply section for water-containing solids and the discharge section for dry matter. In addition, there is a gauge pressure inside the ventilation dryer.
Because a pressure of about 0.6 kgf/cm 2 is applied, a large amount of air is released outside the system when water-containing solids are supplied into the equipment or when dry materials are discharged. Since it will not be possible to supply the same amount of air, it is necessary to take countermeasures.
また、従来の通気乾燥装置は含水固形物を支持
する多孔板、ネツトなどの支持床を必要とし、構
造的にも複雑であつた。 Further, the conventional aeration drying apparatus requires a supporting bed such as a perforated plate or a net to support the water-containing solid material, and is structurally complex.
さらにまた、移動層状態で運転する従来の「通
気竪型乾燥器」と称するものでは、石炭、米粒、
麦、プラスチツクペレツトのように、強度が大
で、互いに癒着する性質をもたず、流動性のよい
粒状物に対してしか適用できず、汚泥脱水ケーキ
のようなべとつきが強く相互に癒着する性質をも
ち、流動性が悪い含水固形物に対しては全く適用
不能であつた。 Furthermore, in the conventional "ventilated vertical dryer" which operates in a moving bed state, coal, rice grains,
It can only be applied to granular materials that are strong and have good fluidity, such as wheat and plastic pellets, and do not have the property of adhering to each other.They are sticky and adhere to each other, such as sludge dewatering cake. However, it was completely unapplicable to water-containing solids that have such properties and poor fluidity.
本考案は、曝気ブロワー吐出空気という高圧温
風をも効率よく利用することができ、熱利用効率
の向上と構造の簡略化を図ることができる新型式
の通気乾燥装置を提供しようとするものである。 The present invention aims to provide a new type of ventilation drying device that can efficiently utilize high-pressure hot air called aeration blower discharge air, improve heat utilization efficiency, and simplify the structure. be.
本考案は、槽体底部を逆錐状に形成し、槽体頂
部とその上部の含水固形物の供給部とを空間部を
介在させて対向配備した弁を介して連結し、槽体
底部に乾燥物排出弁を設け、槽体内下部に温風供
給口を開口すると共に槽体内上部に排気口を開口
し、さらに槽体内高さ方向中間部に含水固形物の
充填層の界面検知器を設け、該検知器の信号を前
記乾燥物排出弁の閉鎖駆動部に連絡せしめたこと
を特徴とする通気乾燥装置であつて、乾燥物の排
出を、充填層の界面位置を検知器によつて検知し
たときに停止し、乾燥の進んだ充填層下部だけを
排出し、まだ水分の高い充填層上部を残留させて
次に供給される含水固形物の支持床たらしめ、ま
た含水固形物を少量ずつ供給することによつて常
に通気性のよい充填層を保持させるものである。
In the present invention, the bottom of the tank body is formed into an inverted conical shape, and the top of the tank body and the water-containing solids supply section above the tank body are connected via valves arranged facing each other with a space interposed between them. A dry matter discharge valve is installed, a hot air supply port is opened at the bottom of the tank, and an exhaust port is opened at the top of the tank, and an interface detector for the filled layer of water-containing solids is installed at the middle of the tank in the height direction. , a ventilation drying device characterized in that a signal from the detector is communicated with a closing drive section of the dried material discharge valve, wherein the discharge of the dried material is detected by the detector at the interface position of the packed bed. When this happens, the system stops, and only the dry lower part of the packed bed is discharged, leaving the upper part of the packed bed with high moisture content to serve as a supporting bed for the next water-containing solids. By supplying it, a packed bed with good air permeability can be maintained at all times.
本考案の一実施例を図面を参照しながら説明す
れば、１は保温された槽体で、槽体１の底部は逆
錐状に形成されている、槽体１の頂部には弁２
（圧力ガスのシール性が優れているバタフライ弁、
ボール弁などが適している）が設けられ、弁２の
上部には空間部４を介在させて弁３（弁２と同様
のものがよい）が対向配備され、弁３の上部に含
水固形物の供給ホツパー５が設けられている。ま
た、槽体１の底部にもバタフライ弁、ボール弁な
どの圧力ガスのシール性のよい乾燥物排出弁６が
設置されており、この乾燥物排出弁６は、例えば
空気圧駆動のエアシリンダによるアクチユエータ
（図示せず）で開閉可能になつている。
An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a heat-retaining tank body, the bottom of which is formed into an inverted conical shape, and a valve 2 at the top of the tank 1.
(Butterfly valve with excellent pressure gas sealing properties,
A ball valve or the like is suitable), and a valve 3 (preferably similar to valve 2) is disposed opposite to the upper part of the valve 2 with a space 4 interposed therebetween. A supply hopper 5 is provided. Further, a dry matter discharge valve 6 such as a butterfly valve or a ball valve with good sealing performance for pressure gas is installed at the bottom of the tank body 1, and this dry matter discharge valve 6 is equipped with an actuator using, for example, a pneumatically driven air cylinder. (not shown) can be opened and closed.
また、槽体１内の下部には温風供給管７が開口
されており、槽体１内上部には排気管８が開口さ
れている。この温風供給管７はブロワー９の吐出
口に連通されるが、有機性汚水の好気性生物処理
工程のエアレーシヨンタンクに曝気用空気を供給
する曝気ブロワーの吐出空気配管を利用すること
ができ、排気管８を図示しないエアレーシヨンタ
ンク内の散気器（デイスクフユーザー、スパージ
ヤーなど）に連通させることができる。 Further, a hot air supply pipe 7 is opened in the lower part of the tank body 1, and an exhaust pipe 8 is opened in the upper part of the tank body 1. This hot air supply pipe 7 is communicated with the discharge port of the blower 9, but it is also possible to use the discharge air pipe of the aeration blower that supplies aeration air to the aeration tank in the aerobic biological treatment process of organic wastewater. The exhaust pipe 8 can be connected to a diffuser (not shown) in an aeration tank (such as a disk user or a sparger).
さらに、槽体１内の高さ方向の中間部には、含
水固形物の充填層１０の界面を検知するセンサー
１１が設けられ、センサー１１の信号が乾燥物排
出弁６を駆動するエアシリンダ等の駆動機の閉鎖
駆動部に入力されるように連絡されている。 Furthermore, a sensor 11 that detects the interface of the filled bed 10 of water-containing solids is provided in the middle part of the tank body 1 in the height direction, and the signal of the sensor 11 drives the dry matter discharge valve 6, etc. is connected to be input to the closing drive part of the drive machine.
図中、１２は乾燥物排出弁６を開放するときに
温風をバイパスさせるべく槽体１外で温風供給管
７と排気管８とを連結したバイパス管で、破線矢
印は槽体１内の温風の流過方向を示すものであ
る。 In the figure, 12 is a bypass pipe that connects the hot air supply pipe 7 and the exhaust pipe 8 outside the tank body 1 in order to bypass the hot air when opening the dry matter discharge valve 6, and the broken line arrow indicates the inside of the tank body 1. This shows the direction in which warm air flows.
また、槽体１の逆錐状底部の構造としては、底
面上方に空間部１３を形成するように逆錐状部材
１４（この部材面に通気口を複数個穿設してもよ
い）を配備し、この空間部１３に温風供給管７を
開口し、中央で槽体１内部と連通させておけば、
供給された温風は槽体１の中央部から上向流で流
過拡散してゆくので、槽体１の内壁に沿つた偏流
を回避することができる。 In addition, as for the structure of the inverted cone-shaped bottom of the tank body 1, an inverted cone-shaped member 14 (a plurality of vent holes may be provided in the surface of this member) is provided so as to form a space 13 above the bottom surface. However, if the hot air supply pipe 7 is opened in this space 13 and communicated with the inside of the tank body 1 at the center,
Since the supplied warm air flows upward from the center of the tank 1 and diffuses, it is possible to avoid drifting along the inner wall of the tank 1.
しかして、乾燥されるべき含水固形物、例えば
含水率75％以下程度の粒状の汚泥脱水ケーキを、
頂部の供給ホツパー５にスクリユーコンベアなど
でほぼ定量的に供給しながら弁３を開放して、下
部の空間部４に落し込み、その後弁３を閉じて弁
２を開放するというサイクルを繰り返すことによ
つて、ケーキを所定量ずつ（少しずつ）槽体１内
に供給し、ケーキの充填層１０を形成させる。こ
のときの弁２，３の開閉は、タイマー等で自動的
に連動させると便利である。次いでブロワー９に
より温風供給管７から温風を供給すると、温風は
上向流にて充填層１０内を通気し、充填層１０は
下部から通気乾燥され、排ガスは湿度100％の湿
球温度状態となつて排気管８から槽外へ排出され
る。 Therefore, the water-containing solids to be dried, for example, granular sludge dewatering cake with a water content of about 75% or less, are
While supplying almost quantitatively to the supply hopper 5 at the top using a screw conveyor or the like, the valve 3 is opened, the product is dropped into the space 4 at the bottom, and then the cycle of closing the valve 3 and opening the valve 2 is repeated. Accordingly, a predetermined amount of cake (little by little) is fed into the tank 1 to form a packed layer 10 of cake. It is convenient if the opening and closing of the valves 2 and 3 at this time are automatically linked using a timer or the like. Next, when hot air is supplied from the hot air supply pipe 7 by the blower 9, the hot air passes through the packed bed 10 in an upward flow, the packed bed 10 is dried through ventilation from the bottom, and the exhaust gas is discharged into a wet bulb with 100% humidity. It reaches a temperature state and is discharged from the exhaust pipe 8 to the outside of the tank.
この乾燥の進行度は充填層１０の下方部が大き
く上方部ほど小さいので、所定時間経過後乾燥物
排出弁６を或る時間（およそ数10秒以下でよい）
開放したのち閉鎖することによつて、充填層１０
の乾燥が進んだ下部だけを排出し、まだ水分が高
い充填層１０の上部を槽体１内に残留させる。乾
燥物排出弁６の開放時間は、充填層１０が下が
り、センサー１１が充填層１０の界面を検知した
ときに、乾燥物排出弁６の閉鎖駆動部に信号を送
り乾燥物排出弁６を速やかに閉鎖する。 The degree of progress of this drying is large in the lower part of the packed bed 10 and smaller in the upper part, so after a predetermined period of time has elapsed, the dry matter discharge valve 6 is closed for a certain period of time (approximately several tens of seconds or less).
By opening and then closing, the packed bed 10
Only the lower part of the packed layer 10 which has progressed to dryness is discharged, and the upper part of the packed bed 10, which is still high in moisture, remains in the tank body 1. The opening time of the dry matter discharge valve 6 is such that when the packed bed 10 is lowered and the sensor 11 detects the interface of the packed bed 10, a signal is sent to the closing drive section of the dry matter discharge valve 6 to immediately close the dry matter discharge valve 6. Closed on.
このように、含水固形物の供給を少量ずつ連続
的に槽体１内に供給して充填層１０を形成させる
一方、乾燥が進んだ充填層１０の下部だけを回分
的に排出し、充填層１０が下がつてその界面がセ
ンサー１１による設定位置にくることによつて排
出を停止し、含水固形物の一部を槽体１内に意図
的に残留させ、次に供給される含水固形物の支持
床たらしめ、温風のリークを微量にし、常に通気
性のよい充填層１０が保持され、癒着性の強い含
水固形物でも高い熱利用効率で乾燥することがで
きる。 In this way, the water-containing solids are continuously fed into the tank body 1 little by little to form the packed bed 10, while only the lower part of the packed bed 10, which has been dried, is discharged in batches. 10 is lowered and its interface reaches the position set by the sensor 11, discharging is stopped, and a part of the water-containing solids is intentionally left in the tank body 1, and the water-containing solids to be supplied next. As a supported bed, leakage of hot air is minimized, a well-ventilated packed bed 10 is always maintained, and even highly adhesive water-containing solids can be dried with high heat utilization efficiency.
なお、この通気乾燥装置を下水、し尿、各種産
業廃水などの有機性汚水の処理過程で発生する含
水固形物の乾燥に使用するときは、きわめて省エ
ネルギー的に有利となる。即ち、有機性汚水の活
性汚泥処理を代表とする好気性生物処理用の曝気
層には、多量の曝気用空気がブロワーから供給さ
れているが、従来このブロワーは単に好気性生物
処理に必要な空気を供給するという単一機能しか
利用されていなかつた。しかし、曝気ブロワー吐
出空気の温風は、熱力学における気体の断熱圧縮
理論に示されるように、ブロワー吸込空気の温度
よりも著しく上昇し、60〜90℃にも達するもので
ある。 Note that when this aerated drying device is used for drying water-containing solids generated during the treatment of organic wastewater such as sewage, human waste, and various industrial wastewaters, it is extremely advantageous in terms of energy saving. In other words, a large amount of aeration air is supplied from a blower to the aeration layer for aerobic biological treatment, typically activated sludge treatment of organic sewage, but conventionally, this blower simply supplies the air necessary for aerobic biological treatment. Only one function was used: supplying air. However, as shown in the adiabatic compression theory of gases in thermodynamics, the temperature of the hot air discharged from the aeration blower is significantly higher than that of the blower suction air, reaching 60 to 90°C.
したがつて、曝気用空気を供給する曝気ブロワ
ーの吐出空気を、温風供給管７から槽体１内に供
給し、その保有熱を含水固形物の充填層１０の乾
燥用熱源として利用したのち、降温し排気管８か
ら排気される排ガス（空気）を曝気層内の散気器
に供給するようにすれば、乾燥用熱源をノーコス
トで入手できるから、きわめて省エネルギー的に
なり、排気管８から排気される排ガス（空気）中
の悪臭は曝気槽内で生物学的に脱臭されるから、
特別の脱臭装置、脱臭経費が不要になる。 Therefore, the air discharged from the aeration blower that supplies aeration air is supplied into the tank body 1 from the hot air supply pipe 7, and the retained heat is used as a heat source for drying the packed bed 10 of the water-containing solids. If the exhaust gas (air) which has cooled down and is exhausted from the exhaust pipe 8 is supplied to the diffuser in the aeration layer, a heat source for drying can be obtained at no cost, resulting in extremely energy saving. Bad odors in the exhaust gas (air) are biologically deodorized in the aeration tank.
Special deodorizing equipment and deodorizing costs become unnecessary.
以上述べたように本考案によれば、次のような
有益なる効果を生ずるものである。
As described above, the present invention provides the following beneficial effects.
従来、乾燥用熱源としては不適当とされてい
た高圧温風を利用してもリークは微量であり、
べとつき、癒着性の強い含水固形物をを高い熱
利用効率下で連続的に乾燥することができる。 Even when using high-pressure hot air, which was previously considered to be inappropriate as a heat source for drying, there is only a small amount of leakage.
Water-containing solids that are sticky and highly adhesive can be continuously dried with high heat utilization efficiency.
乾燥物の回分的排出時に、乾燥物の一部を意
図的に装置内に残留させることによつて、含水
固形物の支持床が不要になり、構造が著しく簡
単になる。 By intentionally leaving a portion of the dry material in the device during the batchwise discharge of the dry material, a supporting bed of wet solids is no longer required and the construction is considerably simplified.
べとつきが強く、強度の弱い含水固形物を一
挙に大量投入すると、充填層下部がその重みに
よつて圧密されてしまい通気性を確保できなく
なるというトラブルを発生するが、本考案では
含水固形物を少量ずつ連続的に供給するので充
填密度が小さく、通気性のよい充填層を形成す
ることができる。 If a large amount of highly sticky and weak water-containing solids are introduced all at once, the lower part of the packed bed will be compacted by the weight, making it impossible to ensure ventilation, but in this invention, water-containing solids are Since it is continuously supplied in small amounts, it is possible to form a packed bed with a low packing density and good air permeability.
図面は本考案の一実施例を示す縦断面図であ
る。
１……槽体、２，３……弁、４……空間部、５
……供給ポツパー、６……乾燥物排出弁、７……
温風供給管、８……排気管、９……ブロワー、１
０……充填層、１１……センサー、１２……バイ
パス管、１３……空間部、１４……逆錐状部材。
The drawing is a longitudinal sectional view showing an embodiment of the present invention. 1... Tank body, 2, 3... Valve, 4... Space part, 5
...Supply popper, 6...Dry material discharge valve, 7...
Hot air supply pipe, 8...Exhaust pipe, 9...Blower, 1
0...Filled bed, 11...Sensor, 12...Bypass pipe, 13...Space, 14...Inverted conical member.
Claims (1)
上部の含水固形物の供給部とを空間部を介在さ
せて対向配備した弁を介して連結し、槽体底部
に乾燥物排出弁を設け、槽体内下部に温風供給
口を開口すると共に槽体内上部に排気口を開口
し、さらに槽体内高さ方向中間部に含水固形物
の充填層の界面検知器を設け、該検知器の信号
を前記乾燥物排出弁の閉鎖駆動部に連絡せしめ
たことを特徴とする通気乾燥装置。 ２ 前記槽体の逆錐状底部を空間部を介在させた
二重構造とし、該空間部に前記温風供給口を開
口して槽体内部と連通せしめたものである実用
新案登録請求の範囲第１項記載の通気乾燥装
置。 ３ 前記温風供給口を曝気ブロワーの吐出口に連
結し、前記排気口をエアレーシヨンタンクに連
結したものである実用新案登録請求の範囲第１
項又は第２項記載の通気乾燥装置。[Claims for Utility Model Registration] 1. The bottom of the tank is formed into an inverted conical shape, and the top of the tank and the supply section for water-containing solids above the tank are connected via valves arranged facing each other with a space interposed therebetween. A dry matter discharge valve is provided at the bottom of the tank body, a warm air supply port is opened at the bottom of the tank body, and an exhaust port is opened at the top of the tank body, and a packed bed of water-containing solids is installed at the middle part of the tank body in the height direction. A ventilation drying device, comprising: an interface detector, and a signal from the detector is communicated to a closing drive section of the dry matter discharge valve. 2 Claims for registration of a utility model in which the inverted conical bottom of the tank body has a double structure with a space interposed therebetween, and the hot air supply port is opened in the space to communicate with the inside of the tank body. The ventilation drying device according to item 1. 3. Utility model registration claim 1, in which the warm air supply port is connected to the discharge port of the aeration blower, and the exhaust port is connected to the aeration tank.
The ventilation drying device according to item 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16077085U JPH044879Y2 (en) | 1985-10-22 | 1985-10-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16077085U JPH044879Y2 (en) | 1985-10-22 | 1985-10-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6272200U JPS6272200U (en) | 1987-05-08 |
| JPH044879Y2 true JPH044879Y2 (en) | 1992-02-12 |
Family
ID=31086460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16077085U Expired JPH044879Y2 (en) | 1985-10-22 | 1985-10-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH044879Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6482913B2 (en) * | 2015-03-16 | 2019-03-13 | メタウォーター株式会社 | Energy-saving sludge treatment system |
-
1985
- 1985-10-22 JP JP16077085U patent/JPH044879Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6272200U (en) | 1987-05-08 |
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