JPH11159722A - Sludge incinerating method - Google Patents
Sludge incinerating methodInfo
- Publication number
- JPH11159722A JPH11159722A JP9324024A JP32402497A JPH11159722A JP H11159722 A JPH11159722 A JP H11159722A JP 9324024 A JP9324024 A JP 9324024A JP 32402497 A JP32402497 A JP 32402497A JP H11159722 A JPH11159722 A JP H11159722A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- slag
- melting furnace
- gas
- oxygen
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Gasification And Melting Of Waste (AREA)
- Incineration Of Waste (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主に下水処理で発
生する汚泥を焼却処理する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for incinerating sludge generated mainly in sewage treatment.
【０００２】[0002]
【従来の技術】下水汚泥は、脱水後、あるいはさらに乾
燥処理して、汚泥中の有機物の燃焼熱を用い、不足する
場合は補助燃料を用いて、流動層を用いて焼却して、汚
泥中の灰分はフライアッシュ状の焼却灰を集塵機で捕集
して処理しているのが一般的であるが、フライアッシュ
状になった焼却灰の処理が輸送、利用面で困難な問題が
ある。2. Description of the Related Art Sewage sludge is dewatered or further dried, and the heat of combustion of organic matter in the sludge is used. In general, fly ash-like incinerated ash is collected by a dust collector and treated, but there is a problem in that handling of fly ash-like incinerated ash is difficult in terms of transportation and utilization.
【０００３】焼却灰の処理を容易にするため、集塵機で
捕集した焼却灰に補助燃料を用いて溶融炉で加熱してス
ラグ状に処理する方法が、特開平１−８４０１４号公報
に提案されている。しかし、この方法では、焼却灰は土
木建設資材として有効に利用出来るが、焼却炉の他に溶
融炉が必要で、さらに補助燃料も必要になるという問題
がある。焼却と溶融を１段で行う方法として、特開平５
−２９４６４２５号公報では、汚泥を層状に供給して、
汚泥の上面にバーナーを配置して汚泥を表面から燃焼し
て溶融する方法が提案されている。この方法は、焼却と
溶融を同時に行える点は有利であるが、補助燃料が必要
であり、灰分を溶融するため、１３００〜１５００℃の
高温で燃焼することから、汚泥中に４〜６％含まれる窒
素がＮＯｘに転化して排ガス中のＮＯｘが増加する問題
がある。また、汚泥の燃焼反応は、表面でしか燃焼しな
いため、溶融炉が大きくなる欠点もある。[0003] In order to facilitate the treatment of incinerated ash, a method is proposed in JP-A-1-84014 in which incinerated ash collected by a dust collector is heated into a slag by using an auxiliary fuel in a melting furnace. ing. However, in this method, incineration ash can be effectively used as a civil engineering construction material, but there is a problem that a melting furnace is required in addition to the incinerator, and an auxiliary fuel is also required. As a method of performing incineration and melting in one stage, see Japanese Patent Application Laid-Open
In Japanese Patent No.-2946425, sludge is supplied in layers,
A method has been proposed in which a burner is arranged on the upper surface of sludge to burn and melt the sludge from the surface. This method is advantageous in that incineration and melting can be performed at the same time, but requires an auxiliary fuel and burns at a high temperature of 1300 to 1500 ° C. to melt ash, so 4 to 6% is contained in sludge. There is a problem that the generated nitrogen is converted into NOx and NOx in the exhaust gas increases. Further, since the sludge combustion reaction burns only on the surface, there is a disadvantage that the melting furnace becomes large.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、従来法で必
須とされる補助燃料を使用しないで、１段の処理で汚泥
の燃焼と溶融を行う汚泥の焼却方法を提供するととも
に、さらに汚泥から有益な燃料ガスを生成・回収するこ
とを目的とする。SUMMARY OF THE INVENTION The present invention provides a method for incinerating sludge in which sludge is burned and melted in a single-stage treatment without using an auxiliary fuel which is essential in the conventional method. The purpose is to generate and recover useful fuel gas from fuel cells.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
の、本発明の手段は以下の通りである。 （１）下水汚泥等を乾燥して、気流搬送して溶融炉に吹
き込み、酸素又は酸素富化空気で汚泥中の有機物を部分
燃焼して高温の還元ガスを生成すると同時に、汚泥中の
無機物を溶融してスラグ状の固形物を回収することを特
徴とする汚泥焼却方法。 （２）前記溶融炉を気流層溶融炉とし、溶融炉の底部に
スラグ排出口を設けて、さらにその下部に水ポットを設
けて、溶融炉で溶融状態になったスラグを落下させて冷
却、固化して回収することを特徴とする（１）項記載の
汚泥焼却方法。 （３）前記溶融炉の酸素または酸素富化空気の流量を、
汚泥中の有機物がガス化するのに必要な流量以上とし、
かつ汚泥の灰分の溶流点以上の温度になるように供給す
ることを特徴とする（１）又は（２）項記載の汚泥焼却
方法。Means of the present invention for solving the above problems are as follows. (1) Sewage sludge is dried, transported by air stream and blown into a melting furnace, and organic matter in the sludge is partially burned by oxygen or oxygen-enriched air to generate high-temperature reducing gas, and at the same time, inorganic matter in the sludge is removed. A sludge incineration method characterized by recovering a slag-like solid by melting. (2) The melting furnace is an air-bed melting furnace, a slag discharge port is provided at the bottom of the melting furnace, and a water pot is further provided at a lower portion thereof, and the slag melted in the melting furnace is dropped and cooled. The sludge incineration method according to (1), wherein the sludge is solidified and recovered. (3) The flow rate of oxygen or oxygen-enriched air in the melting furnace is
The flow rate must be higher than that required for gasification of organic matter in sludge,
The sludge incineration method according to (1) or (2), wherein the sludge is supplied so as to have a temperature equal to or higher than the melting point of the ash content of the sludge.
【０００６】本発明においては、汚泥燃焼炉の熱バラン
スに着目して、燃焼排ガスによる出熱がほとんどを占め
ることから、酸素又は酸素富化空気を用いて燃焼するこ
とで、燃焼排ガス量を減少することが可能になり、補助
燃料を使用しないで、かつ汚泥中の有機物を完全燃焼し
なくても、汚泥中の灰分が溶融してスラグになる燃焼温
度が得られる条件を見いだし、汚泥から有益な燃料ガス
を回収することが可能になる。In the present invention, since the heat generated by the flue gas occupies the most part by focusing on the heat balance of the sludge combustion furnace, the amount of the flue gas is reduced by burning using oxygen or oxygen-enriched air. It is possible to find conditions where the ash in the sludge can be melted and slag can be obtained without using auxiliary fuel and without completely burning the organic matter in the sludge. It is possible to recover a suitable fuel gas.
【０００７】すなわち、汚泥のガス化したガスには、Ｃ
Ｏ2 、Ｈ2 Ｏの他にＣＯ，Ｈ2 の可燃性成分を含んだガ
スが回収できることになる。酸素または酸素富化空気
は、汚泥中の有機物をガス化するのに必要な量（汚泥中
のＣをＣＯにする量）以上で、かつガス化ガス温度を汚
泥中の灰分を溶融して溶融炉の下部から排出する温度
（灰分の溶流点）以上になるように供給する。さらに、
溶融炉の燃焼反応を促進するために、気流層でガス化す
ることで微粉の汚泥が分散した状態で燃焼させることに
なり、表面溶融方式に比べ、反応面積が大きくなって短
時間で反応することが可能になり、コンパクトな溶融炉
で処理が可能になる。さらに、溶融したフライアッシュ
状の灰分は、溶融炉内で旋回している燃焼ガスの力で側
壁に衝突して、溶融炉の側壁を伝わってスラグを溶融炉
の底部のスラグ排出口から排出することが可能になる。That is, the sludge gasified gas contains C
A gas containing combustible components of CO and H 2 in addition to O 2 and H 2 O can be recovered. The amount of oxygen or oxygen-enriched air is greater than the amount required to gasify organic matter in the sludge (the amount of C in the sludge to CO) and the gasification gas temperature is melted to melt the ash in the sludge. It is supplied so that the temperature discharged from the lower part of the furnace becomes higher than the melting point of the ash. further,
In order to promote the combustion reaction in the melting furnace, gasification in the gas stream layer will burn fine sludge in a dispersed state, and the reaction area will be large and react in a short time compared to the surface melting method And processing in a compact melting furnace becomes possible. Further, the molten fly ash-like ash collides with the side wall by the force of the combustion gas swirling in the melting furnace, and travels along the side wall of the melting furnace to discharge slag from the slag outlet at the bottom of the melting furnace. It becomes possible.
【０００８】[0008]
【発明の実施の形態】図１は、本発明の方法を実施する
ための装置の一実施例である。本装置は、乾燥機１、供
給装置２、溶融炉３、冷却炉４、サイクロン５、ボイラ
ー６、集塵装置７を図示の如く関連させて配設し構成さ
れる。FIG. 1 shows an embodiment of an apparatus for carrying out the method of the present invention. This apparatus is configured by arranging a dryer 1, a supply device 2, a melting furnace 3, a cooling furnace 4, a cyclone 5, a boiler 6, and a dust collecting device 7 in association with each other as shown in the figure.
【０００９】乾燥機１は、脱水した汚泥の水分を減少さ
せる装置で、蒸気加熱式、気流乾燥式の乾燥機等が使用
できる。供給装置２は、ホッパーと定量切り出し装置か
ら構成され、ロックホッパーシステムで乾燥汚泥を加圧
して気流搬送し、次の溶融炉３へ供給する。溶融炉３
は、乾燥機１で乾燥した汚泥を燃焼ガス化すると同時に
灰分を溶融する装置で、側壁に２本以上のバーナー８を
有し、溶融炉３の上方には生成したガスを排出するスロ
ート９が設けられる。溶融炉３の下部にはスラグ排出口
１０が設けられ、さらに下方には水ポット１１を設置す
る。The dryer 1 is a device for reducing the moisture content of dewatered sludge, and a steam-heating type, flash-drying type dryer or the like can be used. The supply device 2 is composed of a hopper and a fixed amount cut-out device. The dry sludge is pressurized by a lock hopper system, transported by air flow, and supplied to the next melting furnace 3. Melting furnace 3
Is a device that burns sludge dried by the dryer 1 and simultaneously melts ash. It has two or more burners 8 on the side wall, and a throat 9 for discharging generated gas is provided above the melting furnace 3. Provided. A slag discharge port 10 is provided at a lower portion of the melting furnace 3, and a water pot 11 is provided further below.
【００１０】バーナー８は、図２に示す如く、燃焼ガス
が溶融炉３で旋回するように炉壁に対し平面的に一定の
角度をもって配置される。本実施例ではバーナー４本の
例を示しているが、バーナー８は２本以上あれば旋回流
が得られる。冷却炉４には、その側面に水等を吹き込む
冷却ノズル１２が設けられ、冷却炉４の後段にサイクロ
ン５、ボイラー６、集塵装置７が順に接続されている。As shown in FIG. 2, the burner 8 is arranged at a predetermined angle with respect to the furnace wall so that the combustion gas is swirled in the melting furnace 3. In the present embodiment, an example of four burners is shown, but if there are two or more burners, a swirling flow can be obtained. The cooling furnace 4 is provided with a cooling nozzle 12 for blowing water or the like into a side surface thereof, and a cyclone 5, a boiler 6, and a dust collector 7 are sequentially connected to a stage subsequent to the cooling furnace 4.
【００１１】脱水した汚泥は、乾燥機１で、流動性があ
り、気流搬送できる水分まで乾燥する。乾燥した汚泥
は、供給装置２から定量切り出しされて、空気又は窒素
ガスでバーナー８に気流搬送され、溶融炉３内に送られ
る。バーナー８において、乾燥汚泥と酸素又は酸素富化
空気を吹き込んで汚泥をガス化する。このガス化ガス
は、溶融炉３の上部のスロート９から冷却炉４に入る。
溶融した微粉のスラグは、バーナー８の旋回力で溶融炉
３の側壁に衝突して液状になり、底部のスラグ排出口１
０から水ポット１１に落下して、冷却、固化後排出され
る。冷却炉４では、冷却ノズル１２から水又は生成ガス
を冷却後昇圧したガスを吹き込んで高温のガスを冷却し
て、溶融炉３からガスに同伴された溶融スラグを冷却、
固化する。本実施例では、水スプレーノズルで冷却する
方法を示しているが、冷却した生成ガスを循環して冷却
する方法もあり、ボイラー６の熱回収量は増加するが、
設備が複雑になる。冷却炉４は、輻射型のボイラーで冷
却する方法も併用できる。[0011] The dewatered sludge is dried in the dryer 1 until it has fluidity and can be transported by air flow. The dried sludge is cut out in a fixed amount from the supply device 2, transported by air or nitrogen gas to the burner 8, and sent into the melting furnace 3. In the burner 8, the sludge is gasified by blowing dry sludge and oxygen or oxygen-enriched air. This gasification gas enters the cooling furnace 4 from the throat 9 on the upper part of the melting furnace 3.
The slag of the melted fine powder collides with the side wall of the melting furnace 3 by the swirling force of the burner 8 to become liquid, and the slag discharge port 1 at the bottom is formed.
The water drops from 0 to the water pot 11 and is discharged after cooling and solidification. In the cooling furnace 4, water or generated gas is cooled from the cooling nozzle 12 and then pressurized gas is blown thereinto to cool the high-temperature gas, thereby cooling the molten slag entrained by the gas from the melting furnace 3.
Solidify. In this embodiment, a method of cooling with a water spray nozzle is shown, but there is also a method of cooling by circulating the cooled product gas, and the heat recovery amount of the boiler 6 increases,
Equipment becomes complicated. The cooling furnace 4 can be used in combination with a cooling method using a radiation boiler.
【００１２】冷却されたガスは、サイクロン５でスラグ
を除去して、ボイラー６で熱回収して集塵装置７でサイ
クロンで捕集できなかったスラグを除去する。サイクロ
ン５、集塵装置７で除去したスラグは、微粉状なので、
乾燥汚泥に混合して再度溶融処理して粒状のスラグで回
収することが、灰分を全量粒状のスラグで回収出来る点
から好ましい。サイクロン５は、省略することは可能で
あるが、ボイラー６の伝熱管の磨耗を考慮すると設置す
る方が好ましい。集塵装置７は、バグフィルター等の集
塵効率の高い方式が好ましい。ボイラー６で回収した蒸
気は、乾燥機の熱源として利用可能で、回収ガスはＣ
Ｏ，Ｈ2 を主成分とする可燃性ガスで燃料として有効利
用出来る。The cooled gas removes slag by the cyclone 5, recovers heat by the boiler 6, and removes slag that could not be collected by the cyclone by the dust collector 7. Since the slag removed by the cyclone 5 and the dust collector 7 is in the form of fine powder,
It is preferable that the ash is mixed with the dried sludge, melted again, and recovered as granular slag, since the entire amount of ash can be recovered as granular slag. The cyclone 5 can be omitted, but is preferably installed in consideration of wear of the heat transfer tube of the boiler 6. The dust collecting device 7 is preferably of a type having a high dust collecting efficiency such as a bag filter. The steam recovered by the boiler 6 can be used as a heat source for the dryer, and the recovered gas is C
It is a combustible gas containing O and H 2 as main components and can be effectively used as fuel.
【００１３】なお、溶融炉３に使用する酸化剤は、酸素
ガスの他に、酸素富化空気を使用することも可能である
が、高カロリーのガスを回収でき、回収ガス量を減少で
きることで排ガス処理設備をコンパクトにできる酸素の
使用が好ましい。As the oxidizing agent used in the melting furnace 3, oxygen-enriched air can be used in addition to oxygen gas, but high calorie gas can be recovered and the amount of recovered gas can be reduced. It is preferable to use oxygen which can make the exhaust gas treatment equipment compact.
【００１４】[0014]
【実施例】次に、図１に示した本発明装置を用いて、下
水汚泥を処理した実施例を示す。汚泥は、表１に示す組
成を乾量で２０Ｔ／Ｄ処理した。含水率８０％の汚泥を
乾燥機で含水率２０％まで乾燥したものを溶融炉でガス
化した。溶融炉には純度９５％の酸素４５０Nm3 /Hを使
用して約１４００℃で汚泥をガス化して、灰分をスラグ
化出来た。酸素は、汚泥中の有機物をガス化するのに必
要な量は１８０Nm3/Hであるが、温度を約１４００℃に
して灰分を溶融して排出するために４５０Nm3 /Hを使用
した。スラグは、溶融炉に投入した灰分の約９０％がス
ラグ排出口から回収でき、残りの約１０％がガスに同伴
されたが、サイクロン、集塵装置で捕集してリサイクル
することで、ほぼ１００％をスラグの形で回収すること
が出来た。Next, an embodiment in which sewage sludge is treated using the apparatus of the present invention shown in FIG. 1 will be described. The sludge was subjected to the composition shown in Table 1 by a dry amount of 20 T / D. Sludge having a water content of 80% was dried to a water content of 20% with a dryer and gasified in a melting furnace. Sludge was gasified at about 1400 ° C. by using 450 Nm 3 / H of 95% pure oxygen in the melting furnace to convert ash to slag. The amount of oxygen required to gasify the organic matter in the sludge is 180 Nm 3 / H, but 450 Nm 3 / H was used to melt and discharge the ash at a temperature of about 1400 ° C. About 90% of the ash input to the melting furnace could be recovered from the slag discharge port, and the remaining about 10% was entrained by the gas. 100% could be recovered in the form of slag.
【００１５】冷却炉では、水を５７５kg/H噴霧して８０
０℃に冷却後、ボイラーで蒸気１．２Ｔ／Ｈを回収でき
た。生成ガス量は、乾量で表２に示す組成のガス１１９
５Nm3 /Hを回収でき、汚泥発熱量の５９％を可燃ガスで
回収することが出来た。回収ガスには、ＮＯｘは含まれ
ず、ＮＯｘの原因になるアンモニアも約２０ppm で、汚
泥に含まれている窒素のほとんどは窒素ガスに転化して
無害化されている。In the cooling furnace, 575 kg / H of water is sprayed and 80
After cooling to 0 ° C., 1.2 T / H of steam could be recovered by the boiler. The amount of generated gas was a gas 119 having a composition shown in Table 2 in dry weight.
5 Nm 3 / H could be recovered, and 59% of the sludge calorific value could be recovered with combustible gas. The recovered gas does not contain NOx, and the ammonia that causes NOx is also about 20 ppm. Most of the nitrogen contained in the sludge is converted to nitrogen gas and rendered harmless.
【００１６】[0016]
【表１】 [Table 1]
【表２】 [Table 2]
【００１７】[0017]
【発明の効果】本発明によれば、乾燥汚泥を酸素又は酸
素富化空気でガス化することで、補助燃料を使用しない
で１段で焼却、スラグ化することが可能になり、さら
に、燃料として有効利用出来るガスを回収することが可
能になる。According to the present invention, gasification of dry sludge with oxygen or oxygen-enriched air makes it possible to incinerate and slag in a single step without using an auxiliary fuel. As a result, it is possible to collect gas that can be effectively used.
【図１】本発明の汚泥焼却炉の説明図である。FIG. 1 is an explanatory view of a sludge incinerator according to the present invention.
【図２】本発明の溶融炉のバーナー配置の説明図であ
る。FIG. 2 is an explanatory view of a burner arrangement of the melting furnace of the present invention.
１ 乾燥機 ２ 供給装置 ３ 溶融炉 ４ 冷却炉 ５ サイクロン ６ ボイラー ７ 集塵装置 ８ バーナー ９ スロート １０ スラグ排出口 １１ 水ポット １２ 冷却ノズル DESCRIPTION OF SYMBOLS 1 Dryer 2 Supply device 3 Melting furnace 4 Cooling furnace 5 Cyclone 6 Boiler 7 Dust collector 8 Burner 9 Throat 10 Slag discharge port 11 Water pot 12 Cooling nozzle
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｆ２３Ｇ 7/00 ＺＡＢ Ｆ２３Ｇ 7/00 ＺＡＢ １０４ １０４Ａ Ｆ２３Ｊ 1/02 Ｆ２３Ｊ 1/02 Ａ Ｆ２３Ｌ 7/00 Ｆ２３Ｌ 7/00 Ｂ ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI F23G 7/00 ZAB F23G 7/00 ZAB 104 104A F23J 1/02 F23J 1/02 A F23L 7/00 F23L 7/00 B
Claims (3)
融炉に吹き込み、酸素又は酸素富化空気で汚泥中の有機
物を部分燃焼して高温の還元ガスを生成すると同時に、
汚泥中の無機物を溶融してスラグ状の固形物を回収する
ことを特徴とする汚泥焼却方法。Claims: 1. A sewage sludge is dried, air-flowed and blown into a melting furnace to partially burn organic matter in the sludge with oxygen or oxygen-enriched air to generate a high-temperature reducing gas.
A sludge incineration method characterized by recovering slag-like solid matter by melting inorganic matter in sludge.
の底部にスラグ排出口を設けて、さらにその下部に水ポ
ットを設けて、溶融炉で溶融状態になったスラグを落下
させて冷却、固化して回収することを特徴とする請求項
１記載の汚泥焼却方法。2. The melting furnace is an air-bed melting furnace, a slag discharge port is provided at the bottom of the melting furnace, and a water pot is further provided at a lower part thereof, and the slag in a molten state is dropped by the melting furnace. 2. The sludge incineration method according to claim 1, wherein the sludge is cooled and solidified.
流量を、汚泥中の有機物がガス化するのに必要な流量以
上とし、かつ汚泥の灰分の溶流点以上の温度になるよう
に供給することを特徴とする請求項１又は２記載の汚泥
焼却方法。3. The flow rate of the oxygen or oxygen-enriched air in the melting furnace is set to be equal to or higher than a flow rate required for gasifying organic substances in the sludge and to be equal to or higher than a melting point of ash of the sludge. The sludge incineration method according to claim 1 or 2, wherein the sludge is supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9324024A JPH11159722A (en) | 1997-11-26 | 1997-11-26 | Sludge incinerating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9324024A JPH11159722A (en) | 1997-11-26 | 1997-11-26 | Sludge incinerating method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006183001A Division JP2007010309A (en) | 2006-07-03 | 2006-07-03 | Recovery method of inflammable gas from sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11159722A true JPH11159722A (en) | 1999-06-15 |
Family
ID=18161306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9324024A Pending JPH11159722A (en) | 1997-11-26 | 1997-11-26 | Sludge incinerating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11159722A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4509210B1 (en) * | 2009-04-03 | 2010-07-21 | 勝彦 太田 | Improved treatment method for construction sludge |
| KR101228227B1 (en) * | 2011-02-11 | 2013-01-31 | 한밭대학교 산학협력단 | wastewater and waste sludge recycling apparatus and method for |
| CN110925773A (en) * | 2019-12-13 | 2020-03-27 | 重庆科技学院 | Two segmentation waste drying and incineration disposal system |
-
1997
- 1997-11-26 JP JP9324024A patent/JPH11159722A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4509210B1 (en) * | 2009-04-03 | 2010-07-21 | 勝彦 太田 | Improved treatment method for construction sludge |
| JP2010240567A (en) * | 2009-04-03 | 2010-10-28 | Katsuhiko Ota | Improvement treatment method of construction sludge |
| KR101228227B1 (en) * | 2011-02-11 | 2013-01-31 | 한밭대학교 산학협력단 | wastewater and waste sludge recycling apparatus and method for |
| CN110925773A (en) * | 2019-12-13 | 2020-03-27 | 重庆科技学院 | Two segmentation waste drying and incineration disposal system |
| CN110925773B (en) * | 2019-12-13 | 2024-03-22 | 重庆科技学院 | Two-section type waste drying and incineration treatment system |
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