JPH074589B2 - Method for treating colored waste liquid generated from molasses - Google Patents
Method for treating colored waste liquid generated from molassesInfo
- Publication number
- JPH074589B2 JPH074589B2 JP63257847A JP25784788A JPH074589B2 JP H074589 B2 JPH074589 B2 JP H074589B2 JP 63257847 A JP63257847 A JP 63257847A JP 25784788 A JP25784788 A JP 25784788A JP H074589 B2 JPH074589 B2 JP H074589B2
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- molasses
- organic
- reaction
- substance
- 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 - Lifetime
Links
- 239000002699 waste material Substances 0.000 title claims description 56
- 239000007788 liquid Substances 0.000 title claims description 52
- 235000013379 molasses Nutrition 0.000 title claims description 21
- 238000000034 method Methods 0.000 title claims description 12
- 239000000126 substance Substances 0.000 claims description 25
- 239000003054 catalyst Substances 0.000 claims description 10
- 239000005416 organic matter Substances 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 9
- 239000003960 organic solvent Substances 0.000 claims description 8
- 238000004040 coloring Methods 0.000 claims description 6
- 238000003672 processing method Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 18
- 239000007864 aqueous solution Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000007795 chemical reaction product Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 150000002989 phenols Chemical class 0.000 description 4
- 239000002994 raw material Substances 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
- 235000013305 food Nutrition 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
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 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
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001816 cooling Methods 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
- 239000000203 mixture 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
- 238000000926 separation method Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000004280 Sodium formate 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
- 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
- 238000001125 extrusion Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000011521 glass Substances 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
- 150000004780 naphthols Chemical class 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 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
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 1
- 229960001755 resorcinol Drugs 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 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
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000002904 solvent 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)
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 field of application] The present invention holds colored waste liquor generated in molasses as a raw material in the food industry, alcohol industry, etc. at high temperature and high pressure to remove organic matter in the waste liquor as an oil. The present invention relates to a method for dramatically reducing the concentration of organic substances in a waste liquid by separating and recovering it as a substance, 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。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。Conventionally, molasses, which is a by-product of the sugar manufacturing industry, has been used as a raw material for foods and alcohol, and the waste liquid generated from the process contains a large amount of sugar and ash. Furthermore, this waste liquid is deeply colored. As a method for treating this waste liquid, in general, there is a method of concentrating and incinerating in addition to a biological treatment method, but in the former method, there is a problem of deep coloring, and the decolorization problem remains. The treatment of the low-melting salts generated is a problem, and in fact, a considerable amount of waste liquid is dumped into the ocean. Also, although attempts have been made to use waste liquid as fertilizer and feed, it 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有用物質
に変換する処理法を提供する事を目的とする。The present invention separates and recovers the organic matter dissolved in the colored waste liquid generated from molasses from the liquid to recover the BOD and COD of the waste liquid.
It is an object of the present invention to provide a treatment method that reduces the amount of wastewater, decolorizes the waste liquid, and further converts the organic matter in the waste liquid into a useful substance 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、200〜400℃の温度及び20
〜220気圧に保持し、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。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。According to the present invention, colored waste liquor generated from molasses is treated at a temperature of 200 to 400 ° C. and 20
Provided is a method for treating colored waste liquid generated from molasses, which is characterized in that the concentration of the organic matter in the waste liquid is reduced and the waste liquid is decolorized at the same time by holding at ~ 220 atm and separating and collecting the organic matter in the waste liquid as an oily substance. It The molasses is molasses or waste molasses produced as a by-product in the sugar 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。
一般には、COD20000mg/l以上、BOD15000mg/l以上を示
す。In the present invention, the coloring waste liquid generated from molasses used as a raw material to be treated is a coloring liquid containing sugar such as alcohol manufacturing waste liquid and food manufacturing waste liquid using molasses as a raw material.
Generally, COD 20000 mg / l or more and BOD 15000 mg / l or more are shown.
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、高温高圧条件に
保持すればよい。この場合、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、炭酸水素ナト
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重量部、好ましくは20
〜80重量部の割合で水を含む。In order to carry out the method of the present invention, the colored waste liquor produced from molasses may be kept under high temperature and high pressure conditions in the presence of an alkali catalyst, or in some waste liquors without addition of an alkali catalyst. In this case, as the alkaline substance used as a catalyst, for example, an alkali metal compound such as sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium formate, potassium formate, or calcium oxide, Examples thereof include alkaline earth metal compounds such as calcium hydroxide and magnesium hydroxide. The amount of such an alkali catalyst is 0.1 to 50 parts by weight, preferably 1 to 20 parts by weight, based on 100 parts by weight of organic matter (dry matter basis). When the waste liquid already contains the above-mentioned alkali-catalytic substance, the addition of the alkali catalyst can be omitted. The lower the water content of the waste liquid is, the more advantageous it is in terms of energy.
Includes water in a proportion of -80 parts by weight.
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、反応温度は一般には200〜400
℃、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 under high temperature and high pressure, in which case the reaction pressure is generally 20 to 220 atm, preferably 40 to 170 atm, and the reaction temperature is generally 200 to 400 atm.
C., preferably 250 to 350.degree. C., the reaction time is 5 to 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, as the pressure, the self-generated water vapor pressure due to waste water can be used, but if necessary, for example, nitrogen gas, carbon dioxide gas, argon gas or the like can be used for pressurization.
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６〜10になるよう
にアルカリ触媒の添加量や、反応条件を調節するのがよ
い。The reaction product obtained by the present invention is mainly composed of separated organic matter and an aqueous solution, and this aqueous solution has a COD reduced to about one-third or less of the original waste liquid, and its color is originally It is about the same as the waste liquid of 20 times diluted with water. In the present invention, in order to obtain such a reaction product, it is necessary to adjust the amount of the alkali catalyst added and the reaction conditions so that the pH of the separated aqueous phase becomes 4 to 11, preferably 6 to 10. Good.
本発明方法を好ましく実施する場合、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。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。When the method of the present invention is preferably carried out, it is advantageous to use an external heating type or heat exchange type reaction device as the reaction device, that is, a flow reactor equipped with an electric heater or a heating mechanism by a heat medium outside. . In such a reactor,
The colored waste liquid generated from molasses is heated to a predetermined reaction temperature while flowing through the reactor, kept at the reaction temperature for a predetermined time, and then discharged 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、１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 the preferred embodiment of the present invention. In FIG. 1, 1 is a concentrating device, 2 is a reaction device, 3 is a cooling device, and 4 is a separating 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
重量％以下、通常20〜80重量％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
装置２に導入される。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10
から排出され、その間に反応装置内の内容物を加熱す
る。The colored waste liquid generated from molasses is supplied to the concentrating device 1 via the line 5, where it is concentrated and the separated water obtained is removed by the line 6, while the concentrated water 85
Waste liquid of not more than wt%, usually 20 to 80 wt%, is introduced into the reactor 2 through the line 7 after adding the alkali catalyst through the line 8. This reactor is a heat exchange type reactor, in which the heating medium is introduced through line 9 and line 10
Is discharged from the reactor while heating the contents in the reactor.
反応装置２内に導入された廃液及びアルカリ触媒は、反
応装置内を、押出し流れとして、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200〜400℃、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 reaction device 2 flow at a predetermined speed as an extrusion flow in the reaction device and are extracted from the line 11. In the meantime, the waste liquid is subjected to a reaction process, and organic substances are separated from the waste liquid. In the case of the present invention, the temperature of the reaction product withdrawn from the reactor is preferably 200 to 400 ° C, preferably 250 to 350 ° C. The reaction product extracted through line 11 is introduced into a cooling device, where it is cooled to 100 ° C. or lower, and then introduced into separation device 4 through line 12. From the separation device 4, the decolorized aqueous solution whose organic substance concentration is lower than that of the original waste liquid and which is decolorized
The separated organic matter is extracted through line 14
Be pulled out through. This organic substance is oily, its color is black, and it is flammable.
本発明において、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 the reaction system is preferable in terms of promoting the conversion of the organic substance into an oily substance, increasing the fluidity of the oily substance, and improving the decolorizing effect. In this case, examples of the organic solvent include phenolic compounds, aromatic compounds such as benzene, naphthalene and toluene, petroleum 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、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。これらのものは単独又は混合物
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。有機溶
媒の使用量は、廃液100重量部に対し１〜100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 phenolic compound used in the present invention means a compound having a phenolic hydroxyl group, and such compounds include monohydric phenols and dihydric or higher polyhydric phenols. Specific examples include, for example, phenol, cresols, xylenols, naphthols, catechol, resorcin,
There are hydroquinones. These are used alone or in the form of a mixture, and they do not have to be highly pure, and may be a composition containing phenols. The amount of the organic solvent used is 1 to 100 parts by weight, preferably 5 to 50 parts by weight, based on 100 parts by weight of the waste liquid. FIG. 2 shows a flow sheet when an organic solvent is used. In FIG. 2, it has the same reference numeral as that 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. Further, this organic solvent can be separated from the reaction product and reused.
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、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、発熱量約7000kcal/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。ADVANTAGE OF THE INVENTION According to this invention, the organic substance density | concentration of the coloring waste liquid produced from molasses which had conventionally had a problem in processing can be reduced dramatically, and also the coloring can be decolorized. The fact that the waste liquid generated from molasses can be easily purified in this way is a surprising fact found by the present inventors for the first time. In addition, the organic substance separated from the aqueous solution according to the present invention is an oily substance, has a calorific value of about 7,000 kcal / kg, and can be effectively used 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 described 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％、固形分
中有機物含量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1
28000mg/l、CODは480000mg/lであった。Example 1 As a waste liquid generated from molasses, an industrial alcohol manufacturing waste liquid having a water content of 62.4% by weight and an organic matter content of solids of 76.7% by weight was used. This waste liquid is colored black and its chromaticity is 200 with water.
It was 3500 degrees in a diluted state. The BOD of waste liquid is 1
It was 28000 mg / l and COD was 480,000 mg / l.
この廃液46gを加圧反応容器中で、窒素ガスにより120kg
/cm2Ｇに加圧し、昇温速度約10℃／分で300℃まで加熱
した。この場合、反応圧力は、圧力調節弁により120kg/
cm2Ｇ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、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BODは120000mg/l、CODは200000mg
/l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、発熱量約7000k
cal/kgの油状物質1.45gが得られた。46 g of this waste liquid was put into a pressurized reaction vessel, and then 120 kg with nitrogen gas.
The pressure was increased to / cm 2 G and the temperature was raised to 300 ° C. at a temperature rising rate of about 10 ° C./min. In this case, the reaction pressure is 120 kg /
It was kept at cm 2 G. Immediately after reaching this temperature, the reaction product was cooled to room temperature and the reaction product was taken out of the reaction container into a glass container. Although it was in a suspended state immediately after taking it out, phase separation proceeded with the lapse of time and separated into a brown transparent aqueous solution and a black solid content. BOD of aqueous solution is 120,000 mg / l, COD is 200,000 mg
It was / l. The chromaticity of the aqueous solution was 170 degrees when diluted 200 times with water. Also, from the black solid, the calorific value is about 7,000k
1.45 g of an oily substance of cal / kg was obtained.
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、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、発熱量約7000kcal/k
gの油状物質が得られた。表１に、この時の水溶液のBO
D、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 various organic solvents shown in Table 1 were added to 46 g of the same waste liquid as that used in Example 1, and the reaction was carried out under the same conditions as in Example 1. The waste liquid was separated into a brown transparent aqueous solution and a tar-like substance. Also, from tar-like substances, the calorific value is about 7,000 kcal / k
g oily substance was obtained. Table 1 shows the BO of the aqueous solution at this time.
D, COD, chromaticity of 200 times diluted aqueous solution and amount of oily substance are shown.
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 carrying out the present invention,
FIG. 2 shows an example of the change. 1 ... Concentrator, 2 ... Reactor, 3 ... Cooler, 4 ... Separator.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小木 知子 茨城県つくば市小野川16番３ 工業技術院 公害資源研究所内 (72)発明者 内山 宏 東京都文京区本郷５丁目５番16号 オルガ ノ株式会社内 (72)発明者 村上 雅教 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 審判の合議体 審判長 竹内 浩二 審判官 渡辺 弘昭 審判官 佐伯 義文 (56)参考文献 特開 昭56−141890（ＪＰ，Ａ) 特開 昭55−10421（ＪＰ，Ａ) 特公 昭56−31148（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoko Ogi 16-3 Onogawa, Tsukuba-shi, Ibaraki Institute of Pollution Resources Research Institute (72) Inventor Hiroshi Uchiyama 5-5-16 Hongo, Bunkyo-ku, Tokyo Organo Stock In-house (72) Inventor Masanori Murakami 11-1 Haneda Asahi-cho, Ota-ku, Tokyo Ebara Manufacturing Co., Ltd. Judge's collegial body Koji Takeuchi Judge Judge Hiroaki Watanabe Yoshifumi Saeki (56) References 56-141890 (JP, A) JP-A-55-10421 (JP, A) JP-B-56-31148 (JP, B2)
Claims (2)
てアルカリ触媒の存在下で、200〜400℃の温度及び20〜
220気圧に保持し、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. A colored waste liquid produced from molasses, if necessary in the presence of an alkali catalyst, at a temperature of 200 to 400 ° C. and a temperature of 20 to 400 ° C.
A method for treating a colored waste liquid produced from molasses, which is characterized in that the waste liquid is decolorized at the same time by maintaining the atmospheric pressure at 220 atm and separating and collecting the organic substance in the waste liquid as an oily substance to reduce the concentration of the organic substance in the waste liquid.
存在下、必要に応じてアルカリ触媒の存在下で200〜400
℃の温度及び20〜220気圧に保持し、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. A coloring waste liquid produced from molasses is added in the presence of an organic solvent and, if necessary, in the presence of an alkali catalyst to 200 to 400.
A colored waste liquid produced from molasses characterized by decolorizing the waste liquid while maintaining the temperature of 20 ° C and 20 to 220 atm to separate and collect the organic matter in the waste liquid as an oily substance to reduce the concentration of organic substances in the waste liquid. Processing method.
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 JPH02102776A (en) | 1990-04-16 |
| JPH074589B2 true 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) |
Family Cites Families (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 |
| JPS6022373B2 (en) * | 1979-08-24 | 1985-06-01 | 三菱電機株式会社 | Program conversion mechanism for programmable control equipment |
| 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
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02102776A (en) | 1990-04-16 |
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