JPH02227197A - Deodorizing sludge solidifying agent - Google Patents
Deodorizing sludge solidifying agentInfo
- Publication number
- JPH02227197A JPH02227197A JP1048884A JP4888489A JPH02227197A JP H02227197 A JPH02227197 A JP H02227197A JP 1048884 A JP1048884 A JP 1048884A JP 4888489 A JP4888489 A JP 4888489A JP H02227197 A JPH02227197 A JP H02227197A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- sludge
- lime
- solidifying agent
- dihydroxy
- 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 44
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 25
- 230000001877 deodorizing effect Effects 0.000 title claims abstract description 18
- 239000004568 cement Substances 0.000 claims abstract description 37
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 28
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 28
- 239000004571 lime Substances 0.000 claims abstract description 28
- YLVACWCCJCZITJ-UHFFFAOYSA-N 1,4-dioxane-2,3-diol Chemical compound OC1OCCOC1O YLVACWCCJCZITJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 20
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 18
- 229910021529 ammonia Inorganic materials 0.000 description 10
- 229940015043 glyoxal Drugs 0.000 description 9
- 239000002781 deodorant agent Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000011398 Portland cement Substances 0.000 description 5
- 238000004898 kneading Methods 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- JHUUPUMBZGWODW-UHFFFAOYSA-N 3,6-dihydro-1,2-dioxine Chemical compound C1OOCC=C1 JHUUPUMBZGWODW-UHFFFAOYSA-N 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- FCTDKZOUZXYHNA-UHFFFAOYSA-N 1,4-dioxane-2,2-diol Chemical compound OC1(O)COCCO1 FCTDKZOUZXYHNA-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は防臭性汚泥固化剤に係り、特にセメント又は石
灰系の汚泥固化剤において、アンモニア系悪臭物質によ
る臭気発生を効果的に抑制する防臭性汚泥固化剤に関す
る。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an odor-proofing sludge solidifying agent, and in particular to a cement- or lime-based sludge solidifying agent, an odor-proofing agent that effectively suppresses odor generation caused by ammonia-based malodorous substances. Regarding sludge solidifying agents.
［従来の技術］
し尿や下水等の汚泥の処理方法の一つとして、汚泥をセ
メントや石灰等で固化する方法がある。[Prior Art] One method for treating sludge such as human waste and sewage is to solidify the sludge with cement, lime, or the like.
即ち、この方法は、汚泥からの硫化水素やメチルメルカ
プタンなど硫黄系悪臭物質の発生を抑制し、また、汚泥
を固化して搬出等を容易にするために、セメントや石灰
を汚泥に添加混合して固化するものである。In other words, this method involves adding and mixing cement and lime to the sludge in order to suppress the generation of sulfur-based malodorous substances such as hydrogen sulfide and methyl mercaptan from the sludge, and to solidify the sludge and make it easier to transport. It solidifies.
、［発明が解決しようとする課題］
しかしながら、汚泥にセメントや石灰を添加混合する際
には、刺激性が強く、不快度の強いアンモニア主体の臭
気が発生し、作業環境を悪化させるのみならず、この臭
気が風に流されて付近住民からの悪臭苦情の原因となる
などの問題が生じてくる。, [Problem to be solved by the invention] However, when adding and mixing cement and lime to sludge, a highly irritating and unpleasant ammonia-based odor is generated, which not only worsens the working environment but also Problems arise, such as this odor being blown away by the wind and causing complaints from nearby residents.
この対策として、一般には、汚泥にセメントや石灰を混
合した後、消臭剤を散布したり、その周囲から囲むよう
に消臭剤を噴霧するノズルを配置して、消臭剤を噴霧す
る方法がとられるが、このような方法はいずれも、いわ
ば後追い的消臭法であるため、効率的な消臭法とはいえ
ない、即ち、汚泥とセメントや石灰とを混合すると、直
ちにアンモニアの発生が始まるため、作業上、消臭剤を
散布するのが回能となる。しかも、アンモらアの発生が
開始した後から、消臭剤を散布するのでは、十分な消臭
効果が得られない、しかも、固化剤添加後、消臭剤散布
という煩雑な作業を必要とする、また、周囲を囲って消
臭剤を噴霧する方法では、ノズルの配置上、当然臭気が
濡れ出るところが生じ、消臭効果が行きわたらないこと
がある上に、設備費、作業性等の面でも不利である。As a countermeasure against this, the general method is to spray the deodorizer after mixing cement or lime with the sludge, or by arranging nozzles that spray the deodorant in a surrounding manner. However, all of these methods are so-called follow-up deodorization methods, so they cannot be said to be efficient deodorization methods.In other words, when sludge is mixed with cement or lime, ammonia is immediately generated. Because of this, it becomes necessary to spray deodorant during work. Moreover, spraying deodorizers after the onset of ammonia formation does not provide sufficient deodorizing effects; furthermore, it requires the tedious work of spraying the deodorant after adding the solidifying agent. Furthermore, with the method of spraying deodorant around the surrounding area, due to the arrangement of the nozzles, there are places where the odor naturally leaks out, and the deodorizing effect may not be widespread, and it also reduces equipment costs, work efficiency, etc. It is also disadvantageous in terms of
そこで、セメントや石灰に酸性物質や消臭剤を予め混合
しておくことが考えられるが、この方法はセメントや石
灰とこれに混合された酸性物質や消臭剤とが化学反応を
起こしたり、セメントや石灰の固化が始まってしまうな
どの不具合があるため、実現不可能である。例えば、汚
泥をセメントや石灰で固化する際に発生するアンモニア
主体の臭気に非常に有効な液体消臭剤として、グリオキ
ザールが良く用いられているが、グリオキザールをセメ
ントや石灰と混合すると、酸であるグリオキザールと、
アルカリであるセメントや石灰とが著しく反応し、両者
ともにそれぞれの機能が失なわれてしまう、このような
ことから、グリオキザールをセメントと混合して使用す
ることはできない。Therefore, it may be possible to mix cement or lime with an acidic substance or deodorant in advance, but this method may cause a chemical reaction between the cement or lime and the acidic substance or deodorant mixed with it. This is not possible due to problems such as the cement and lime starting to solidify. For example, glyoxal is often used as a liquid deodorant that is very effective against the ammonia-based odor that is generated when sludge is solidified with cement or lime. However, when glyoxal is mixed with cement or lime, it becomes an acid. glyoxal and
Glyoxal cannot be used in combination with cement because it reacts significantly with cement and lime, which are alkaline, and both lose their respective functions.
本発明は上記従来の問題点を解決し、優れた防、とする
。The present invention solves the above-mentioned conventional problems and provides excellent protection.
［課題を解決するための手段］
本発明の防臭性汚泥固化剤は、セメント及び／又は石灰
に２．３−ジヒドロキシ−１，４−ジオキサンを混合し
てなることを特徴とする。[Means for Solving the Problems] The deodorizing sludge solidifying agent of the present invention is characterized by being made by mixing cement and/or lime with 2,3-dihydroxy-1,4-dioxane.
以下に本発明の詳細な説明する。The present invention will be explained in detail below.
本発明において、セメントとしてはポルトランドセメン
トが好適であり、普通ポルトランドセメント、早強ポル
トランドセメント、超早強ポルトランドセメント、中庸
熱ポルトランドセメントなどが例示される。In the present invention, Portland cement is suitable as the cement, and examples thereof include ordinary Portland cement, early strength Portland cement, ultra early strength Portland cement, moderate heat Portland cement, and the like.
石灰としては生石灰（Ｃａｂ） 消石灰（Ｃａ （Ｏ
Ｈ）２ ） 石灰石（ＣａＣＯｓ）が好適であるが、
ドロマイト（Ｃａ ＣＯ５ＭｇＣＯ５） 焼成ドロマ
イト（ＣａＯＭｇＯ）やその水和物などＣａＯを主要成
分として含有するものであれば適宜採用できる。Lime includes quicklime (Cab), slaked lime (Ca (O
H)2) Limestone (CaCOs) is preferred, but
Dolomite (CaCO5MgCO5) Any material containing CaO as a main component, such as calcined dolomite (CaOMgO) or its hydrate, can be used as appropriate.
本発明の防臭性汚泥固化剤において、セメント及び／又
は石灰と２．３−ジヒドロキシ−１，４−ジオキサンと
の混合割合には特に制限はないが、セメント及び／又は
石灰の割合が多過ぎ、２．３−ジヒドロキシ−１，４−
ジオキサンの割合が少ないと十分な防臭効果が得られな
い、逆にセメント及び／又は石灰の割合が少な過ぎ、２
゜３−ジヒドロキシ−１，４−ジオキサンの割合が多過
ぎると固化性能が低下する。従って、両者の混合割合は
セメント及び／又は石灰１ｏｏ重量部に対して２，３−
ジヒドロキシ−１，４−ジオキサンを２０〜１００重量
部とするのが好ましい。In the deodorizing sludge solidifying agent of the present invention, there is no particular restriction on the mixing ratio of cement and/or lime and 2,3-dihydroxy-1,4-dioxane, but if the ratio of cement and/or lime is too high, 2,3-dihydroxy-1,4-
If the proportion of dioxane is too low, sufficient deodorizing effect cannot be obtained; conversely, if the proportion of cement and/or lime is too small,
If the proportion of 3-dihydroxy-1,4-dioxane is too large, the solidification performance will deteriorate. Therefore, the mixing ratio of both is 2,3-10 parts by weight of cement and/or lime.
Preferably, the amount of dihydroxy-1,4-dioxane is 20 to 100 parts by weight.
このような本発明の防臭性汚泥固化剤は、セメント及び
／又は石灰と２．３−ジヒドロキシ−１，４−ジオキサ
ンの粉末との所定量を常法により混合することにより容
易に調製することができる。The deodorizing sludge solidifying agent of the present invention can be easily prepared by mixing predetermined amounts of cement and/or lime and 2,3-dihydroxy-1,4-dioxane powder in a conventional manner. can.
なお、本発明の防臭性汚泥固化剤は、セメント及び／又
は石灰の固化性能や２．３−ジヒドロキシ−１，４−ジ
オキサンの防臭性能を損なうことがない範囲において、
速硬剤等の他の添加剤を含有していても良い。In addition, the deodorizing sludge solidifying agent of the present invention can be used within the range that does not impair the solidifying performance of cement and/or lime or the deodorizing performance of 2,3-dihydroxy-1,4-dioxane.
It may also contain other additives such as quick hardening agents.
このような本発明の防臭性汚泥固化剤は、処理する汚泥
の含水量等によっても異なるが、通常、汚泥重量に対し
て、本発明の防臭性汚泥固化剤はセメント及び／又は石
炭が３〜１０重量％になるように添加混合することによ
り、臭気を防止して、効率的な汚泥の固化処理を行なう
ことが可能とされる。Although the odor-preventing sludge solidifying agent of the present invention differs depending on the water content of the sludge to be treated, etc., the odor-preventing sludge solidifying agent of the present invention usually has a content of cement and/or coal of 3 to 3% relative to the weight of the sludge. By adding and mixing at a concentration of 10% by weight, it is possible to prevent odor and perform efficient sludge solidification treatment.
［作用］
下記反応により、グリオキザールとエチレングリコール
を反応させて得られる２、３−ジヒドロキシ−１，４−
ジオキサンは粉末状固体であり、セメントや石灰によく
混合し、長期に安定している。[Action] 2,3-dihydroxy-1,4- obtained by reacting glyoxal and ethylene glycol by the following reaction.
Dioxane is a powdered solid that mixes well with cement and lime and is stable over long periods of time.
そして、この２．３−ジヒドロキシ−１，４−ジオキサ
ンは、水分にあうと、再びグリオキザールとエチレング
リコールに分解し、グリオキザールの防臭効果を発揮す
る。When this 2,3-dihydroxy-1,4-dioxane encounters moisture, it decomposes into glyoxal and ethylene glycol again, exerting the deodorizing effect of glyoxal.
本発明の防臭性汚泥固化剤は、このような２゜３−ジヒ
ドロキシ−１，４−ジオキサンをセメント及び／又は石
灰と混合したものであるため、製造時及び保存時におい
ては、両者は反応を起こしたり変質したりすることなく
、安定かつ良好な状態で製造、保存される。Since the deodorizing sludge solidifying agent of the present invention is a mixture of such 2゜3-dihydroxy-1,4-dioxane with cement and/or lime, there is no reaction between the two during manufacturing and storage. Manufactured and stored in stable and good condition without causing any damage or deterioration.
しかして、その使用に際しては、汚泥に本発明の防臭性
汚泥固化剤を混合すると、防臭性汚泥固化剤中の２．３
−ジヒドロキシ−１，４−ジオキサンが直ちに汚泥中の
水分により分解してグリオキザールとなり、これがアン
モニア系の臭気の発生を抑制する０本発明の防臭性汚泥
固化剤はセメント及び／又は石灰と２．３−ジヒドロキ
シ−１，４−ジオキサンが予め混合されたものであるた
め、これを同時に汚泥中に存在させることができる。こ
のため、汚泥にセメント及び／又は石灰を混合するとす
ぐに発生してくるアンモニア系の臭気を効率的に抑制す
ることができる。Therefore, when using it, when the odor-proofing sludge solidifying agent of the present invention is mixed with sludge, 2.3% of the odor-proofing sludge solidifying agent is
-Dihydroxy-1,4-dioxane is immediately decomposed by water in the sludge to form glyoxal, which suppresses the generation of ammonia-based odor. Since -dihydroxy-1,4-dioxane is premixed, it can be present in the sludge at the same time. Therefore, it is possible to efficiently suppress the ammonia-based odor that is generated immediately when cement and/or lime are mixed with sludge.
［実施例］
以下に実施例及び比較例を挙げて、本発明をより具体的
に説明する。[Example] The present invention will be described in more detail by giving Examples and Comparative Examples below.
実施例１
セメントと２．３−ジヒドロキシ−１，４−ジオキサン
とを２：１（３！量比）の割合で混合して、本発明の防
臭性汚泥固化剤を調製した。この防臭性汚泥固化剤を下
水処理場で発生した脱水ケーキに対して、セメント５重
量％、２．３−ジヒドロキシ−１，４−ジオキサン２．
５重量％となる量添加混練した。混練後、直ちに固化汚
泥２００ｇを３００ｍ１容のビーカー（表面積：約４４
ｃｒｒ？）に採り、このビーカーを５Ｉｔ容の密閉容器
に入れ、アンモニア濃度と臭気濃度（三点比較式実装法
による官能試験）の測定を行なった。Example 1 A deodorizing sludge solidifying agent of the present invention was prepared by mixing cement and 2,3-dihydroxy-1,4-dioxane at a ratio of 2:1 (3! quantitative ratio). This deodorizing sludge solidifying agent was added to the dehydrated cake generated at a sewage treatment plant in an amount of 5% by weight of cement, 2.3-dihydroxy-1,4-dioxane and 2.
It was added and kneaded in an amount of 5% by weight. Immediately after kneading, 200g of solidified sludge was poured into a 300ml beaker (surface area: approx.
crrr? ), and the beaker was placed in a 5 It capacity airtight container, and the ammonia concentration and odor concentration (sensory test using a three-point comparison mounting method) were measured.
結果を第１表に示す。The results are shown in Table 1.
比較例１
セメントのみを混練したこと以外は、実施例１と同様に
して臭気試験を行ない、結果を第１表に示した。Comparative Example 1 An odor test was conducted in the same manner as in Example 1, except that only cement was kneaded, and the results are shown in Table 1.
比較例２
セメントのみを混練し、混線後固化汚泥の表面にグリオ
キザール液（４０重量％）を３ ｍ１１７４４ｃｍ”散
布したこと以外は、実施例１と同様にして臭気試験を行
ない、結果を第１表に示した。Comparative Example 2 An odor test was conducted in the same manner as in Example 1, except that only cement was kneaded and glyoxal solution (40% by weight) was sprayed on the surface of the solidified sludge after mixing. It was shown to.
比較例３
セメントのみを混練し、混練後固化汚泥の表面に２．３
−ジヒドロキシ−１，４−ジオキサンを３ ｇ ／ ４
４ ｃ ｒｎ’散布したこと以外は、実施例１と同様に
して臭気試験を行ない、結果を第１表に示した。Comparative Example 3 Only cement was mixed, and after mixing, 2.3% of the solidified sludge was mixed.
-dihydroxy-1,4-dioxane at 3 g/4
An odor test was conducted in the same manner as in Example 1, except that 4 crn' was sprayed, and the results are shown in Table 1.
実施例２
消石灰と２．３−ジヒドロキシ−１，４−ジオキサンと
を２：１（重量比）の割合で混合し、これを脱水ケーキ
に対して消石灰１０重量％、２゜３−ジヒドロキシ−１
，４−ジオキサン５重量％となる量添加混練した。その
後、実施例１と同様の臭気試験を行ない、結果を第１表
に示した。Example 2 Slaked lime and 2.3-dihydroxy-1,4-dioxane were mixed at a ratio of 2:1 (weight ratio), and this was added to the dehydrated cake in an amount of 10% by weight of slaked lime and 2.3-dihydroxy-1,4-dioxane.
, 4-dioxane was added in an amount of 5% by weight and kneaded. Thereafter, an odor test similar to that in Example 1 was conducted, and the results are shown in Table 1.
第１表
第１表より明らかなように、セメント及び／又は石灰を
混練することにより、１回の混練作業のみで、汚泥固化
と臭気抑制とを同時に行なうことができ、臭気濃度を無
処理（比較例１）の場合に比べて大幅に低減することが
できる。なお、２゜３−ジヒドロキシ−１，４−ジオキ
サンを散布した場合（比較例３）は、固化汚泥のほぼ全
面を２．３−ジヒドロキシ−１，４−ジオキサンで被覆
しているため、防臭効果は高いが、この場合にはセメン
ト混線後、２．３−ジヒドロキシ−１゜４−ジオキサン
の散布を行なうため作業性が悪いとともに、セメント混
練時のアンモニア発生は抑制できない。Table 1 As is clear from Table 1, by kneading cement and/or lime, sludge solidification and odor suppression can be performed simultaneously with only one kneading operation, and the odor concentration can be reduced without treatment ( This can be significantly reduced compared to the case of Comparative Example 1). In addition, when 2゜3-dihydroxy-1,4-dioxane was sprayed (Comparative Example 3), almost the entire surface of the solidified sludge was covered with 2.3-dihydroxy-1,4-dioxane, so the odor control effect was reduced. However, in this case, 2,3-dihydroxy-1°4-dioxane is sprayed after the cement is mixed, resulting in poor workability and the generation of ammonia during cement mixing cannot be suppressed.
［発明の効果］
以上詳述した通り、本発明の防臭性汚泥固化剤は、汚泥
の固化とアンモニア系臭気の発生抑制とを１回の混練作
業により同時に達成することができる。このため、固化
剤の混練後、消臭剤を散布したり、消臭剤の散布設備を
設けたりする必要もなく、少ない作業数にて低コストで
効率的に臭気の発生を抑制した状態で汚泥の固化処理を
行なうことができ、作業環境を良好に保つことが可能と
される。[Effects of the Invention] As detailed above, the deodorizing sludge solidifying agent of the present invention can simultaneously achieve solidification of sludge and suppression of generation of ammonia odor by one kneading operation. Therefore, after kneading the solidifying agent, there is no need to spray deodorizer or install deodorant spraying equipment, and odor generation can be efficiently suppressed at low cost with a small number of operations. It is possible to solidify sludge and maintain a good working environment.
Claims (1)
−１，４−ジオキサンを混合してなることを特徴とする
防臭性汚泥固化剤。(1) A deodorizing sludge solidifying agent characterized by being made by mixing cement and/or lime with 2,3-dihydroxy-1,4-dioxane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1048884A JPH02227197A (en) | 1989-03-01 | 1989-03-01 | Deodorizing sludge solidifying agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1048884A JPH02227197A (en) | 1989-03-01 | 1989-03-01 | Deodorizing sludge solidifying agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02227197A true JPH02227197A (en) | 1990-09-10 |
Family
ID=12815711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1048884A Pending JPH02227197A (en) | 1989-03-01 | 1989-03-01 | Deodorizing sludge solidifying agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02227197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0360786A (en) * | 1989-07-31 | 1991-03-15 | Kenro Motoda | Method and device for treating garbage or the like |
-
1989
- 1989-03-01 JP JP1048884A patent/JPH02227197A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0360786A (en) * | 1989-07-31 | 1991-03-15 | Kenro Motoda | Method and device for treating garbage or the like |
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