JPH02102776A - Treatment of colored waste liquid generated from molasses - Google Patents
Treatment of colored waste liquid generated from molassesInfo
- Publication number
- JPH02102776A JPH02102776A JP25784788A JP25784788A JPH02102776A JP H02102776 A JPH02102776 A JP H02102776A JP 25784788 A JP25784788 A JP 25784788A JP 25784788 A JP25784788 A JP 25784788A JP H02102776 A JPH02102776 A JP H02102776A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- molasses
- line
- colored
- reactor
- 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.)
- Granted
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 64
- 239000007788 liquid Substances 0.000 title claims description 57
- 235000013379 molasses Nutrition 0.000 title claims description 21
- 239000003054 catalyst Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims description 20
- 239000005416 organic matter Substances 0.000 claims description 13
- 239000003960 organic solvent Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 10
- 239000003513 alkali Substances 0.000 description 6
- 239000007795 chemical reaction product Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 150000002989 phenols Chemical class 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004280 Sodium formate Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- 150000001341 alkaline earth metal compounds Chemical class 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001896 cresols Chemical class 0.000 description 1
- MIHINWMALJZIBX-UHFFFAOYSA-N cyclohexa-2,4-dien-1-ol Chemical class OC1CC=CC=C1 MIHINWMALJZIBX-UHFFFAOYSA-N 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 125000000687 hydroquinonyl group Chemical class C1(O)=C(C=C(O)C=C1)* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000004780 naphthols Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- WFIZEGIEIOHZCP-UHFFFAOYSA-M potassium formate Chemical compound [K+].[O-]C=O WFIZEGIEIOHZCP-UHFFFAOYSA-M 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 150000003739 xylenols Chemical class 0.000 description 1
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、糖蜜類を原料とした食品工業、或いはアルコ
ール工業などで発生する着色廃液を、高温高圧に保持し
、廃液中の有機物を油状物質として分離回収することに
よって廃液の有機物濃度を飛躍的に低減すると同時に廃
液を脱色する方法に関するものである。Detailed Description of the Invention [Industrial Application Field] The present invention maintains colored waste liquid generated in the food industry, alcohol industry, etc. using molasses as a raw material at high temperature and pressure, and converts organic matter in the waste liquid into an oily state. The present invention relates to a method of dramatically reducing the concentration of organic matter in a waste liquid by separating and recovering the substances, and at the same time decolorizing the waste liquid.
従来、製糖工業の副産物である糖蜜類は食品やアルコー
ルの原料として利用されており、その工程から発生する
廃液には多量の糖分、灰分が含まれている。さらにこの
廃液は濃厚に着色している。Traditionally, molasses, a byproduct of the sugar manufacturing industry, has been used as a raw material for food and alcohol, and the waste liquid generated from this process contains large amounts of sugar and ash. Furthermore, this waste liquid is deeply colored.
この廃液の処理方法としては、一般的には生物処理方法
の他、濃縮して焼却する方法があるが、前者の方法では
濃厚に着色し、その脱色の問題が残り、後者の方法では
焼却時に発生する低融点塩類の処理が問題になっており
、実際にはかなりの量の廃液が海洋投棄されている。ま
た、廃液の肥料化や飼料化も試みられてはいるが、実用
化には至ってない。In general, there are biological treatment methods and methods for concentrating and incinerating this waste liquid, but the former method produces a thick color and the problem of decolorization remains, while the latter method Disposal of the low-melting point salts generated has become a problem, and a considerable amount of waste liquid is actually dumped into the ocean. There have also been attempts to turn waste liquid into fertilizer and feed, but this has not been put to practical use.
本発明は糖蜜類から生ずる着色廃液中に溶存する有機物
を、液中から分離回収することによって廃液のＢＯＤ、
ＣＯＤを低減すると同時に、廃液の脱色を行い、さら
に廃液中の有機物をエネルギー源として有効利用し得る
石川物質に変換する処理法を提供する事を目的とする。The present invention improves the BOD of the waste liquid by separating and recovering organic substances dissolved in the colored waste liquid generated from molasses.
The purpose of the present invention is to provide a treatment method that reduces COD, decolorizes waste liquid, and converts organic matter in waste liquid into Ishikawa substances that can be effectively used as an energy source.
本発明によれば、糖蜜類から生ずる着色廃液を、必要に
応じてアルカリ触媒の存在下、高温高圧に保持し、廃液
中の有機物を油状物質として分離回収することによって
廃液の有機物濃度を低減化すると同時に廃液を脱色する
ことを特徴とする糖蜜類から生ずる着色廃液の処理方法
が提供される。According to the present invention, the concentration of organic matter in the waste liquid is reduced by holding the colored waste liquid produced from molasses at high temperature and high pressure in the presence of an alkaline catalyst as necessary, and separating and recovering the organic substances in the waste liquid as oily substances. A method for treating a colored waste liquid produced from molasses is provided, which comprises simultaneously decolorizing the waste liquid.
なお糖蜜類とは製糖工業において副産物として生ずる糖
蜜あるいは廃糖蜜である。Molasses is molasses or blackstrap molasses produced as a by-product in the sugar manufacturing industry.
本発明において被処理原料として用いる糖蜜類から生ず
る着色廃液とは、糖蜜類を原料として用いるアルコール
製造廃液、食品製造廃液等の糖分を含む着色液である。The colored waste liquid produced from molasses used as a raw material to be treated in the present invention is a colored liquid containing sugar, such as alcohol manufacturing waste liquid and food manufacturing waste liquid using molasses as a raw material.
一般には、 ＣＯＤ２００００ｍｇ／Ｑ以上、１１０Ｄ
１５０００ｍｇ／４以上を示す。Generally, COD 20000mg/Q or more, 110D
Indicates 15000mg/4 or more.
本発明の方法を実施するには、糖蜜類から生ずる着色廃
液を、アルカリ触媒の存在下で、或いは廃液によっては
特にアルカリ触媒を添加することなく、高ｍｉ圧条件に
保持すればよい。この場合。To carry out the method of the present invention, the colored waste liquid produced from molasses may be maintained at high mi pressure conditions in the presence of an alkali catalyst or, depending on the waste liquid, without the addition of an alkali catalyst. in this case.
触媒として用いるアルカリ性物質としては、例えば、水
酸化ナトリウム、水酸化カリウム、炭酸ナトリウム、炭
酸カリウム、炭醸水索ナトリウム、炭酸水素カリウム、
ギ酸ナトリウム、ギ酸カリウム等のアルカリ金属化合物
や、酸化カルシウム、水酸化カルシウム、水酸化マグネ
シウム等のアルカリ土類金属化合物等が挙げられる。こ
のようなアルカリ触媒の量は、有機物１００重量部（乾
燥物基準）に対し、０．１〜５０重量部、好ましくは１
〜２０重量部の割合である。廃液中に前記のようなアル
カリ触媒作用物質が既に含まれている場合には、アルカ
リ触媒の添加は省略し得る。廃液の含水率は低い方がエ
ネルギー的に有利であるが、一般には、廃液１００重量
部に対し１０〜９９重斌部、好ましくは２０〜８０重斌
部の割合で水を含む。Examples of alkaline substances used as catalysts include sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium charcoal, potassium hydrogen carbonate,
Examples include alkali metal compounds such as sodium formate and potassium formate, and alkaline earth metal compounds such as calcium oxide, calcium hydroxide, and magnesium hydroxide. The amount of such alkali catalyst is 0.1 to 50 parts by weight, preferably 1 part by weight, per 100 parts by weight of organic matter (on a dry matter basis).
~20 parts by weight. If the waste liquid already contains an alkaline catalytically active substance as described above, the addition of the alkaline catalyst can be omitted. Although the lower the water content of the waste liquid, the more advantageous it is in terms of energy, it generally contains water at a ratio of 10 to 99 parts by weight, preferably 20 to 80 parts by weight, per 100 parts by weight of the waste liquid.
本発明における反応処理は、高温高圧下で実施されるが
、この場合、反応圧力は一般に２０〜２２０気圧、好ま
しくは４０−１７０気圧であり１反応器度は一般には２
００−４００℃、好ましくは２５０〜３５０℃、反応時
間は５〜１８０分である。The reaction treatment in the present invention is carried out at high temperature and high pressure. In this case, the reaction pressure is generally 20 to 220 atm, preferably 40 to 170 atm, and 1 reactor degree is generally 2
The temperature is 00-400°C, preferably 250-350°C, and the reaction time is 5-180 minutes.
本発明において、圧力は、廃水による自己発生水蒸気圧
を利用する事ができるが、必要に応じ、例えば、窒素ガ
ス、炭酸ガス、アルゴンガス等を用いて加圧する事もで
きる。In the present invention, self-generated water vapor pressure from waste water can be used as the pressure, but if necessary, the pressure can also be increased using, for example, nitrogen gas, carbon dioxide gas, argon gas, or the like.
本発明により得られた反応生成物は、主として分離され
た有機物と水溶液とからなるが、この水溶液はもとの廃
液の約３分の１以下にＣＯＤが低減化されており、色は
もとの廃液を水で２０倍に希釈したものと同程度になる
。本発明において、このような反応生成物を得るには、
分離された水相のｐＨが４−１１．好ましくは６〜ｌＯ
になるようにアルカリ触媒の添加址や、反応条件を調節
するのがよい。The reaction product obtained by the present invention mainly consists of separated organic substances and an aqueous solution, but this aqueous solution has a COD reduced to about one-third or less of the original waste liquid, and the color is different from the original. It is equivalent to diluting the waste liquid 20 times with water. In the present invention, to obtain such a reaction product,
The pH of the separated aqueous phase is 4-11. Preferably 6-1O
It is best to adjust the amount of alkali catalyst added and the reaction conditions so that
本発明方法を好まし〈実施する場合、反応装置としては
、外部加熱型または熱交換型反応装置、即ち、外部に電
熱ヒータや、熱媒体による加熱機構を備えた流通反応器
を用いるのが有利である。When carrying out the method of the present invention, it is advantageous to use an external heating type or heat exchange type reaction apparatus, that is, a flow reactor equipped with an external electric heater or a heating mechanism using a heat medium. It is.
このような反応装置では、糖蜜類から生ずる着色廃液は
、その反応器を流通する間に所定の反応温度に加熱され
ると共に、その反応温度に所定時間保持された後、反応
器から抜出される。In such a reactor, the colored waste liquid produced from molasses is heated to a predetermined reaction temperature while flowing through the reactor, and is held at that reaction temperature for a predetermined time before being extracted from the reactor. .
次に、本発明の好ましい実施態様について、第１図にそ
のフローシートを示す。第１図において、■は濃縮装置
、２は反応装置、３は冷却装置、４は分離装置を各示す
。Next, FIG. 1 shows a flow sheet of a preferred embodiment of the present invention. In FIG. 1, ■ indicates a concentration device, 2 a reaction device, 3 a cooling device, and 4 a separation device.
糖蜜類から生ずる着色廃液はライン５を介して濃縮装置
１に供給され、ここで濃縮処理され、得られた分離水゛
はライン６により除去され、一方、濃縮処理された水分
８５重景％以下、通常２０〜８０重景％の廃液は、ライ
ン８によりアルカリ触媒を添加された後、ライン７を通
って反応器Ｍ２に導入される。The colored waste liquid produced from molasses is supplied to the concentrator 1 through line 5, where it is concentrated, and the resulting separated water is removed through line 6, while the concentrated water content is below 85%. The waste liquid, usually 20 to 80% by weight, is introduced into the reactor M2 through line 7 after addition of an alkali catalyst through line 8.
この反応装置は、熱交換型反応装置であり、加熱媒体が
ライン９から導入され、ラインｌＯから排出され、その
間に反応装置内の内容物を加熱する。This reactor is a heat exchange type reactor, in which a heating medium is introduced through line 9 and discharged through line IO, during which time the contents within the reactor are heated.
反応装置２内に導入された廃液及びアルカリ触媒は５反
応装置内を、押出し流１しとして、所定速度で流通し、
ライン１１より抜出される。その間に廃液は反応処理を
受け、廃液から有機物が分離される。本発明の場合、反
応装置から抜出される反応生成物の温度は２００〜４０
０℃、好ましくは２５０〜３５０℃に規定するのがよい
。ライン１１によって抜出された反応生成物は、冷却装
置に導入され、ここで１００℃以下に冷却された後、ラ
イン１２を通って分離装置４に導入される。分離装置４
からは、元の廃液に比して有機物濃度が低下し、脱色さ
れた水溶液がライン１３を通って抜出され、一方、分離
された有機物がライン１４を通って抜出される。この有
機物は、油状のものであり、その色は黒色であり、可燃
性を示す。The waste liquid and the alkali catalyst introduced into the reactor 2 flow through the reactor 5 as an extrusion stream 1 at a predetermined speed,
It is extracted from line 11. During this time, the waste liquid undergoes a reaction treatment to separate organic substances from the waste liquid. In the case of the present invention, the temperature of the reaction product extracted from the reactor is between 200 and 40°C.
The temperature is preferably set to 0°C, preferably 250 to 350°C. The reaction product extracted through line 11 is introduced into a cooling device, where it is cooled to below 100° C., and then introduced into separation device 4 through line 12. Separation device 4
From there, a decolorized aqueous solution with a reduced concentration of organic matter compared to the original waste liquid is withdrawn through line 13, while separated organic matter is withdrawn through line 14. This organic substance is oily, black in color, and flammable.
本発明において１反応系に有機溶媒を存在させることは
、有機物の油状物質への変換を促進させるとともに油状
物質の流動性を増し、脱色効果を向上させる点で好まし
いことである。この場合、有機溶媒としては、フェノー
ル性化合物、ベンゼン、ナフタレン、トルエン等の芳香
族化合物、ケロシン、ソルベントナフサ等の石油類等が
挙げられる。In the present invention, the presence of an organic solvent in one reaction system is preferable in that it promotes the conversion of organic matter into an oily substance, increases the fluidity of the oily substance, and improves the decolorizing effect. In this case, examples of the organic solvent include phenolic compounds, aromatic compounds such as benzene, naphthalene, and toluene, and petroleum compounds such as kerosene and solvent naphtha.
本発明において用いるフェノール性化合物は。The phenolic compound used in the present invention is:
フェノール性水酸基を有する化合物を意味し、このよう
なものとしては、１価フェノール類及び２価以上の多価
フェノール類が包含され、このようなフェノール性化合
物の具体例としては、例えば、フェノール、クレゾール
類、キシレノール類、ナフトール類、カテコール、レゾ
ルシン、ヒドロキノン類がある。これらのものはｒＢ独
又は混合物の形で用いられ、また、高純度のものである
必要はなく、フェノール類を含む組成物であってもよい
。It means a compound having a phenolic hydroxyl group, and such compounds include monohydric phenols and polyhydric phenols of dihydric or higher hydration. Specific examples of such phenolic compounds include, for example, phenol, These include cresols, xylenols, naphthols, catechol, resorcinol, and hydroquinones. These substances may be used alone or in the form of a mixture, and they do not need to be of high purity, and may be compositions containing phenols.
有機溶媒の使用量は、廃液１００重壕部に対し１−１０
０重量部、好ましくは５〜５０重量部である。第２図に
有機溶媒を用いた場合のフローシートを示す。第２図に
おいて、第１図に示したものと同一符号の意味を有する
。The amount of organic solvent used is 1-10 per 100 trenches of waste liquid.
0 parts by weight, preferably 5 to 50 parts by weight. FIG. 2 shows a flow sheet when an organic solvent is used. In FIG. 2, the same symbols have the same meanings as those shown in FIG.
この第２図に示したフローシートにおいては、有機溶媒
はライン１５を通ってライン７に導入される。また、こ
の有機溶媒は反応生成物から分離し、循環使用すること
ができる。In the flow sheet shown in FIG. 2, the organic solvent is introduced into line 7 through line 15. Moreover, this organic solvent can be separated from the reaction product and recycled.
本発明によれば、従来、処理に問題があった糖蜜類から
生ずる着色廃液の有機物濃度を飛躍的に低減化させるこ
とができ、さらにその着色を脱色することができる。糖
蜜類から生ずる廃液がこのように簡便に浄化されること
は本発明者らが初めて見出した意外な事実である。その
上１本発明により水溶液から分離される有機物は油状物
質であり、発熱破約７０００ｋｃａＱ／ ｋｇを示し、
エネルギー源として有効利用する事も可能である。According to the present invention, it is possible to dramatically reduce the organic matter concentration of colored waste liquid produced from molasses, which has conventionally been problematic to treat, and furthermore, the coloring can be removed. It is an unexpected fact discovered for the first time by the present inventors that waste liquid generated from molasses can be purified easily in this way. Furthermore, the organic substance separated from the aqueous solution according to the present invention is an oily substance and exhibits an exothermic breakdown of 7000 kcaQ/kg;
It is also possible to use it effectively as an energy source.
次に本発明を実施例によりさらに詳細に説明する。 Next, the present invention will be explained in more detail with reference to Examples.
実施例１
糖蜜類から生ずる廃液として含水率６２．４重量で、固
形分中有搬物含量７６．７重量％の工業用アルコール製
造廃液を用いた。この廃液は黒色に着色し、その色度は
水で２００倍に希釈した状態で３５００度であった。ま
た廃液のＢＯＤは１２８０００ｍｇ／Ｌ ＣＯＤは４８
００００ｍｇ／Ｑであった。Example 1 An industrial alcohol production waste liquid having a water content of 62.4 weight and a solid content of 76.7 weight % was used as a waste liquid generated from molasses. This waste liquid was colored black, and its chromaticity was 3500 degrees when diluted 200 times with water. Also, the BOD of waste liquid is 128,000 mg/L and the COD is 48.
It was 0000mg/Q.
この廃液４６ｇを加圧反応容器中で、窒素ガスにより１
２０ｋｇ／ｃｊＧに加圧し、昇温速度約１０℃７分で３
００℃まで加熱した。この場合、反応圧力は、圧力調節
弁により１２０１ｇ（／ａ＃Ｇに保った。この温度に到
達直後に常温まで冷却し、反応生成物を反応容器からガ
ラス容器に取り出した。取り出し直後は懸濁状態であっ
たが１時間の経過とともに相分離が進行し、茶色透明な
水溶液と黒色固形分に分離した。水溶液のＢＵＤは１２
００００＋＋＋ｇ／Ｑ、 ＣＯＤは２０００００ｍｇ、
／αであった。水溶液の色度は水で２００倍に希釈した
状態で１７０度であった。また黒色固形物から。46 g of this waste liquid was heated in a pressurized reaction vessel with nitrogen gas to
Pressurize to 20kg/cjG, heat up at approximately 10°C for 7 minutes.
It was heated to 00°C. In this case, the reaction pressure was maintained at 1201 g (/a #G) by a pressure control valve. Immediately after reaching this temperature, it was cooled to room temperature and the reaction product was taken out from the reaction vessel into a glass container. Immediately after taking out, it was suspended. However, phase separation progressed over the course of 1 hour, and a brown transparent aqueous solution and a black solid were separated.The BUD of the aqueous solution was 12.
0000+++g/Q, COD is 200000mg,
/α. The chromaticity of the aqueous solution was 170 degrees when diluted 200 times with water. Also from black solids.
発熱社約７０００ｋｃａｌ／ｋｇの油状物質１．４５ｇ
が得られた。1.45g of oily substance with about 7000kcal/kg
was gotten.
実施例２
実施例１で用いたものと同一の廃液４６ｇに表１に示す
各種の有機溶媒を４ｇ添加し、実施例１と同一条件で１
反応を行った。廃液は茶色透明な水溶液とタール状物質
とに分離した。またタール状物質から１発熱量約７００
０ｋｃａｌ／ｋｇの油状物質が得られた０表１に、この
時の水溶液のＢＯＤ、ＣＯＤ、２００倍に希釈した水溶
液の色度及び、油状物質の量を示す。Example 2 4 g of the various organic solvents shown in Table 1 were added to 46 g of the same waste liquid as used in Example 1, and the mixture was heated under the same conditions as Example 1.
The reaction was carried out. The waste liquid was separated into a brown transparent aqueous solution and a tar-like substance. Also, the calorific value of one tar-like substance is approximately 700
Table 1 shows the BOD and COD of the aqueous solution, the chromaticity of the 200-fold diluted aqueous solution, and the amount of the oily substance.
表 ■table ■
第１図は本発明を実施する場合のフローシートを示し、
第２図はその変更例を示す。
１・・・濃縮装置、２・・・反応装置、３・・・冷却装
置、４・・・分離装置。FIG. 1 shows a flow sheet for implementing the present invention,
FIG. 2 shows an example of the modification. 1... Concentration device, 2... Reaction device, 3... Cooling device, 4... Separation device.
Claims (1)
カリ触媒の存在下で、高温高圧に保持し、廃液中の有機
物を油状物質として分離回収することにより廃液の有機
物濃度を低減化すると同時に廃液を脱色する事を特徴と
する糖蜜類から生ずる着色廃液の処理方法。（２）糖蜜
類から生ずる着色廃液を、有機溶媒の存在下、必要に応
じてアルカリ触媒の存在下で高温高圧に保持し、廃液中
の有機物を油状物質として分離回収することにより廃液
の有機物濃度を低減化すると同時に廃液を脱色する事を
特徴とする糖蜜類から生ずる着色廃液の処理方法。(1) Colored waste liquid produced from molasses is maintained at high temperature and pressure in the presence of an alkaline catalyst if necessary, and the organic matter in the waste liquid is separated and recovered as an oily substance, thereby reducing the concentration of organic matter in the waste liquid. A method for treating colored waste liquid produced from molasses, which is characterized by decolorizing the waste liquid. (2) Colored waste liquid produced from molasses is held at high temperature and pressure in the presence of an organic solvent and, if necessary, an alkaline catalyst, and the organic matter in the waste liquid is separated and recovered as an oily substance, thereby increasing the concentration of organic matter in the waste liquid. A method for treating colored waste liquid produced from molasses, which is characterized by reducing the amount of water and decolorizing the waste liquid at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63257847A JPH074589B2 (en) | 1988-10-13 | 1988-10-13 | Method for treating colored waste liquid generated from molasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63257847A JPH074589B2 (en) | 1988-10-13 | 1988-10-13 | Method for treating colored waste liquid generated from molasses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02102776A true JPH02102776A (en) | 1990-04-16 |
| JPH074589B2 JPH074589B2 (en) | 1995-01-25 |
Family
ID=17311978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63257847A Expired - Lifetime JPH074589B2 (en) | 1988-10-13 | 1988-10-13 | Method for treating colored waste liquid generated from molasses |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074589B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50156262A (en) * | 1974-06-07 | 1975-12-17 | ||
| JPS529971A (en) * | 1975-07-14 | 1977-01-25 | Daiki Gomme Kogyo Kk | Process and device for disposing of waste water with blood |
| JPS5631148A (en) * | 1979-08-24 | 1981-03-28 | Mitsubishi Electric Corp | Program converting mechanism for programable control device |
| JPS59169590A (en) * | 1983-03-17 | 1984-09-25 | Toray Ind Inc | Treatment of liquid waste from washing finish of printed board coated with washing finish photosensitive resin |
-
1988
- 1988-10-13 JP JP63257847A patent/JPH074589B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50156262A (en) * | 1974-06-07 | 1975-12-17 | ||
| JPS529971A (en) * | 1975-07-14 | 1977-01-25 | Daiki Gomme Kogyo Kk | Process and device for disposing of waste water with blood |
| JPS5631148A (en) * | 1979-08-24 | 1981-03-28 | Mitsubishi Electric Corp | Program converting mechanism for programable control device |
| JPS59169590A (en) * | 1983-03-17 | 1984-09-25 | Toray Ind Inc | Treatment of liquid waste from washing finish of printed board coated with washing finish photosensitive resin |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH074589B2 (en) | 1995-01-25 |
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