JPH01260086A - Treatment of drain containing malodorous substance - Google Patents
Treatment of drain containing malodorous substanceInfo
- Publication number
- JPH01260086A JPH01260086A JP8367088A JP8367088A JPH01260086A JP H01260086 A JPH01260086 A JP H01260086A JP 8367088 A JP8367088 A JP 8367088A JP 8367088 A JP8367088 A JP 8367088A JP H01260086 A JPH01260086 A JP H01260086A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- drain
- malodorous substances
- containing malodorous
- malodorous
- 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
- 239000000126 substance Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000004140 cleaning Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000002655 kraft paper Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 abstract description 20
- 239000000498 cooling water Substances 0.000 abstract description 7
- 238000009987 spinning Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 55
- 238000010411 cooking Methods 0.000 description 8
- 238000005406 washing Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
（Ａ）産業上の利用分野
本発明は、クラフトパルプ製造工程から排出される悪臭
物質含有ドレン及び悪臭物質含有ガスの処理方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a method for treating malodorous substance-containing drain and malodorous substance-containing gas discharged from a kraft pulp manufacturing process.
（Ｂ）従来の技術
一般に、クラフトパルプ製造工程から排出される悪臭物
質は、硫化水素（Ｈ２Ｓ ）−メチルメルカプタン（Ｃ
Ｈ３Ｓ）Ｉ） 、硫化メチル（（ＣｈｈＳ） 、二硫化
メチル（（ＣＨ））２Ｓ２ ） 等である。(B) Conventional technology In general, the malodorous substances discharged from the kraft pulp manufacturing process are hydrogen sulfide (H2S)-methyl mercaptan (C
H3S)I), methyl sulfide ((ChhS), methyl disulfide ((CH))2S2), and the like.
悪臭物質は悪臭物質含有ガスとして、蒸解工程、洗浄工
程のブロータンク、黒液のＰ液タンク、ドラム式洗浄機
又はノット分ｍ機、黒液濃縮工程の黒液酸化装置、エバ
ポレーター真空装置から排出される。悪臭物質含有ドレ
ンとしては、蒸解工程の凝縮ドレン、黒液濃縮工程のエ
バポレータードレン、エバポレーター真空装置シール水
等が排出されている。Malodorous substances are discharged as malodorous substance-containing gases from the cooking process, the blow tank in the cleaning process, the P liquid tank for black liquor, the drum-type washer or knot-mixing machine, the black liquor oxidizer in the black liquor concentration process, and the evaporator vacuum device. be done. Examples of drains containing malodorous substances include condensate drains from the cooking process, evaporator drains from the black liquor concentration process, and seal water from evaporator vacuum equipment.
この悪臭物質の処理方法には悪臭物質含有ガスを補集し
燃焼処理する方法がある。この場合、比較的悪臭物質濃
度が富くガス量が少ないものは石灰焼成キルンで燃焼処
理し、悪臭物質濃度が比較的低くガス量が多いものは回
収ボイラーで燃焼する方法がある。A method for treating malodorous substances includes a method of collecting and burning gas containing malodorous substances. In this case, there is a method in which those with a relatively high concentration of malodorous substances and a small amount of gas are burned in a lime kiln, and those with a relatively low concentration of malodorous substances and a large amount of gas are burned in a recovery boiler.
又、悪臭物質含有ドレンをストリッピングする方法は（
イ）エアストリッピング法、（ロ）スチームストリッピ
ング法、（ハ）充填塔で比較的低濃度の悪臭物質含有ガ
スを利用したストリッピング法等がある０例えば特公昭
５７−３９７号公報にはラシしリングを充填したストリ
ッピング塔に悪臭ドレンを供給し、悪臭ガスでストリッ
ピングし、塔より排出された悪臭ガスを冷却して悪臭ガ
ス中の水分を除去する方法が開示されている。In addition, the method for stripping drain containing malodorous substances is (
There are a) air stripping methods, (b) steam stripping methods, and (c) stripping methods that use gas containing malodorous substances at relatively low concentrations in packed towers. For example, Japanese Patent Publication No. 57-397 describes A method is disclosed in which malodorous drain is supplied to a stripping tower filled with a ring, the malodorous gas is stripped, and the malodorous gas discharged from the tower is cooled to remove moisture from the malodorous gas.
又は特開昭５８−１５３５７７号公報には臭気成分含有
コンデンセートを線構造を有する充填塔に送入すると共
に空気を送入することにより臭気成分を分離する方法が
開示されている。Alternatively, JP-A-58-153577 discloses a method for separating odor components by feeding condensate containing odor components into a packed column having a linear structure and also introducing air.
こりらの方法は悪臭物質含有ドレンに対するストリッピ
ング用ガスの比（以下Ｇ／Ｌ比という）、！具物質含有
ドレンのＣＯＤ −ＢＯＤ除去率、設備費又は動力費等
にそれぞれ特徴を持っている。Their method is based on the ratio of stripping gas to drain containing malodorous substances (hereinafter referred to as G/L ratio). Each type has its own characteristics in terms of COD-BOD removal rate, equipment cost, power cost, etc. of drain containing substances.
又、ストリッピング後の悪臭物質含有ドレンを活性汚泥
処理する方法も知られている。Also known is a method of treating drain containing malodorous substances after stripping with activated sludge.
（Ｃ）発明が解決しようとする課題
このちの悪臭物質含有ガスを回収ボイラー又は石灰焼成
キルンで燃焼する場合、冷却し水分を除去し、熱エネル
ギーの効率低下を防止する必要があった。更には低臭気
型ボイラー等の対策が行われている。(C) Problems to be Solved by the Invention When gas containing malodorous substances is to be combusted in a recovery boiler or a lime kiln, it is necessary to cool the gas and remove moisture to prevent a decrease in thermal energy efficiency. Furthermore, measures such as low-odor boilers are being taken.
本発明は、クラフトバルブ製造工程の蒸解工程、洗浄工
程および黒液濃縮工程から発生する悪臭物質含有ガスを
集め、悪臭物質含有ガス冷却塔で悪臭物質含有ガスの冷
却を効率よく行うと同時に、充填塔を用いることなくＧ
／Ｌ比を大きくし、悪臭物質含有ドレンのストリッピン
グを効率よく行うことを目的とする。又、ストリッピン
グ後のガス冷却塔の循環水を洗浄工程の洗浄水として使
用し、製造工程の系外に悪臭物質含有ドレン中の悪臭物
質又はＣＯＤ、ＢＯＤ物質を排出しないことを第２の目
的とする。The present invention collects gas containing malodorous substances generated from the cooking process, cleaning process, and black liquor concentration process of the kraft valve manufacturing process, and efficiently cools the gas containing malodorous substances in a cooling tower for gas containing malodorous substances. G without using a tower
The purpose of this invention is to increase the /L ratio and efficiently strip drain containing malodorous substances. In addition, the second purpose is to use the circulating water of the gas cooling tower after stripping as cleaning water in the cleaning process, and to not discharge malodorous substances or COD and BOD substances in the drain containing malodorous substances to the outside of the manufacturing process system. shall be.
（Ｄ＞問題点を解決するための手段
本発明は、クラフトパルプ製造工程から発生する悪臭物
質含有ドレンの処理方法において、製造工程より発生す
る７＠具物質含有ガスと悪臭物質含有ドレンをガス冷却
塔に送入し、該ガス冷却塔の循環水ラインに冷却器を設
置し、悪臭物質含有ガスの冷却と同時に悪臭物質含有ド
レンをストリッピングすることを特徴とする悪臭物質含
有ドレンの処理方法であり、他の発明は、悪臭物質含有
ドレンをストリッピングした後、該ストリッピング後の
ガス冷却塔の循環水を洗浄工程の洗浄水として使用する
ことを特徴とする悪臭物質含有ドレンの処理方法に関す
るものである。(D> Means for Solving Problems The present invention is a method for treating drainage containing malodorous substances generated from a kraft pulp manufacturing process, in which gas containing substances generated from the manufacturing process and drainage containing malodorous substances are cooled by gas. A method for treating condensate containing malodorous substances, which comprises: supplying the gas to a tower, installing a cooler in the circulating water line of the gas cooling tower, and stripping the condensate containing malodorous substances at the same time as cooling the malodorous substance-containing gas. Another invention relates to a method for treating drain containing malodorous substances, which comprises stripping the drain containing malodorous substances, and then using circulating water of a gas cooling tower after the stripping as cleaning water in a cleaning step. It is something.
（Ｅ）作用
本発明は、ガス冷却塔の循環水ラインに冷却器を設けた
構成により、蒸解工程、洗浄工程又は黒液濃縮工程の悪
臭物質含有ガスを集め、１つのガス冷却器で悪臭物質含
有ガスの冷却を行うと同時に、悪臭物質含有ドレンをス
トリッピングした後の悪臭物質含有ガスの冷却も行うこ
とができる。(E) Effect The present invention has a configuration in which a cooler is provided in the circulating water line of a gas cooling tower, so that gas containing malodorous substances from the cooking process, washing process, or black liquor concentration process is collected, and gases containing malodorous substances are collected in one gas cooler. At the same time as cooling the contained gas, it is also possible to cool the malodorous substance-containing gas after stripping the malodorous substance-containing drain.
又、これと同時に充填塔を用いることなく、蒸解工程、
洗浄工程又は黒液濃縮工程の悪臭物質含有ガスを集め、
Ｊ！Ｗ具物質含有ガスの悪臭物質濃度を低くし、更にＧ
／Ｌ比を大きくすることで悪臭物質含有ドレンのストリ
ッピングを効率よく行うことができる。ＭＩＬ物質含有
ドレンの悪臭物質の除去率はガス冷却塔のフラッティン
グ速度を算出し、フラッティング曲線以下に蒸解工程、
洗浄工程又は黒液濃縮工程の悪臭物質含有ガスを集め、
ＧＺＬ比を大きくすることがより高い除去率を得ること
ができる。更に、ガス冷却塔の多孔板の数を増加するこ
とによっても高い除去率を得ることができる。ストリッ
ピング後の悪臭物質含有ドレン処理液は、低濃度の悪臭
物質を含有するが、これを系外に排出することなく蒸解
工程、洗浄工程の洗浄水等に使用しクローズド化を行う
。At the same time, the cooking process, without using a packed column,
Collect gas containing malodorous substances from the cleaning process or black liquor concentration process,
J! Lowers the concentration of malodorous substances in gas containing W ingredients, and further improves G
By increasing the /L ratio, drain containing malodorous substances can be efficiently stripped. The removal rate of malodorous substances from the drain containing MIL substances is determined by calculating the fluttering rate of the gas cooling tower, and if the rate is below the flatting curve, the cooking process,
Collect gas containing malodorous substances from the cleaning process or black liquor concentration process,
A higher removal rate can be obtained by increasing the GZL ratio. Furthermore, a high removal rate can also be obtained by increasing the number of perforated plates in the gas cooling tower. Although the malodorous substance-containing drain treatment liquid after stripping contains malodorous substances at a low concentration, it is used as washing water in the cooking process, washing process, etc. without discharging it outside the system to achieve a closed system.
これにより実質上悪臭物質又はＣＯＤ、ＢＯＤ成分を含
有する悪臭物質含有ドレン処理液を回収することができ
る、この際悪臭物質含有ドレン処理液の引き抜きは、使
用場所に適した温度で行うことができる、使用温度が高
い場合はガス冷却塔の循環ラインの冷却器の前で引き抜
き、使用温度が低い場合は冷却器の後で引き抜いて使用
することができる。特に冷却器後の温度の低いドレン処
理液は活性汚泥処理にも好都合となる。As a result, the malodorous substance-containing drain treatment liquid that substantially contains malodorous substances or COD and BOD components can be recovered. At this time, the malodorous substance-containing drain treatment liquid can be drawn out at a temperature suitable for the place of use. When the operating temperature is high, it can be extracted before the cooler in the circulation line of the gas cooling tower, and when the operating temperature is low, it can be extracted after the cooler. In particular, the low temperature drain treatment liquid after the cooler is also convenient for activated sludge treatment.
悪臭物質含有ドレンのガス冷却塔への供給は、悪臭物質
含有ドレンの温度により、高い場合は冷却器の前に供給
し、温度の低い場合は冷却器の後に供給することができ
る。又、冷却器の冷却水量を調節して、ストリッピング
後の悪臭物質含有ガスや悪臭物質含有ドレン処理液の温
度をコントロールできる。The malodorous substance-containing condensate can be supplied to the gas cooling tower depending on the temperature of the malodorous condensate, if the temperature is high, it can be supplied before the cooler, and if the temperature is low, it can be supplied after the condenser. Furthermore, by adjusting the amount of cooling water in the cooler, the temperature of the malodorous substance-containing gas and the malodorous substance-containing drain treatment liquid after stripping can be controlled.
（Ｆ）実施例
本発明を第１図に示す悪臭物質含有ガス冷却装置に基づ
いて詳細に説明する。(F) Example The present invention will be explained in detail based on the malodorous substance-containing gas cooling device shown in FIG.
実施例１
．１ｌｌＪｉｉＬ物質含有ガス冷却塔１は直径２４ｍ、
高さ６．６ｍで、容量は３０ｍ３である。Example 1. 1llJiiL material-containing gas cooling tower 1 has a diameter of 24 m,
It is 6.6m high and has a capacity of 30m3.
多孔板は０．６ ｍ間隔で５段とした。循環ポンプ７の
容量は１００ｍ３／時である。The perforated plate was arranged in five stages with an interval of 0.6 m. The capacity of the circulation pump 7 is 100 m3/hour.
悪臭物質含有ガスは悪臭物質含有ガス人口２より悪臭物
質含有ガス冷却塔１に入り、多孔板３を通り悪臭物質含
有ガス出口４より排出される。悪臭物質含有ドレンはド
レン入口９から悪臭物質含有ガス冷却塔１に入り循環ラ
イン中の処理液出口８より排出される。ＷＡ具物質含有
ガスは蒸解工程。The malodorous substance-containing gas enters the malodorous substance-containing gas cooling tower 1 through the malodorous substance-containing gas population 2, passes through the perforated plate 3, and is discharged from the malodorous substance-containing gas outlet 4. The malodorous substance-containing drain enters the malodorous substance-containing gas cooling tower 1 from the drain inlet 9 and is discharged from the treated liquid outlet 8 in the circulation line. The gas containing WA ingredients is used in the cooking process.
洗浄工程のブロータンク、黒液のＰ液タンク、ド ゛ラ
ム式洗浄機及びノット分離機から排出されたものを集め
て使用した。The waste discharged from the blow tank in the cleaning process, black liquor P liquid tank, drum washer, and knot separator was collected and used.
このガス流量は５６００ｍ３／時で、温度は７５℃で、
このガス中の悪臭物質量はａ Ｉ ＴＲ８−Ｋｇ／時で
あった。悪臭物質含有ドレンは黒液濃縮工程 。The gas flow rate was 5600 m3/hour, the temperature was 75°C,
The amount of malodorous substances in this gas was a I TR8-Kg/hour. Drainage containing malodorous substances is processed through the black liquor concentration process.
のエバポレーター真空装置のドレンを使用した。The drain of the evaporator vacuum device was used.
このドレンの流量は３６．５’ｍ ’／時で、温度は４
１℃、このドレン中の悪臭物質量は８．７ ＴＲ３−Ｋ
ｇ／時であった。冷却器には１５℃の４８ｍ３７時の冷
却水が入り、３０℃で取り出した。The flow rate of this drain is 36.5'm'/hour and the temperature is 4
At 1℃, the amount of malodorous substances in this drain is 8.7 TR3-K
g/hour. 48 m of cooling water at 15°C was put into the cooler and taken out at 30°C.
ガス及びドレンのＧ／Ｌ比は１５４であった。The G/L ratio of gas and drain was 154.
ストリッピング後の悪臭物質含有ガスは４０℃に調節さ
れ、回収ボイラーで燃焼処理しな。After stripping, the malodorous substance-containing gas is adjusted to 40°C and is not combusted in a recovery boiler.
又、ストリッピング後の悪臭物質含有ドレン処理液は温
度が４５℃で、水量は３Ｑ、１ｍ３／時で、悪臭物質量
は０．４ ＴＲ８−Ｋｇ／時で、この悪臭物質の除去率
は９５．４％であった。この処理液を洗浄工程のドラム
式洗浄機のシャワー水として、従来使用していた温水量
の５０％の利用として温水に置換して使用し、クローズ
ド化を行った。In addition, the temperature of the drain treatment liquid containing malodorous substances after stripping was 45°C, the water volume was 3Q, 1 m3/hour, the amount of malodorous substances was 0.4 TR8-Kg/hour, and the removal rate of this malodorous substance was 95. It was .4%. This treatment liquid was used as shower water for a drum-type washer in the cleaning process, replacing 50% of the amount of hot water used conventionally with hot water, thereby achieving a closed system.
洗浄度の調査はパルプのドラム式洗浄機の洗浄前後のパ
ルプに付着水分の過マンガン酸カリウム消費量で行った
。洗浄度は９７．６％であった。The degree of cleaning was investigated by measuring the amount of potassium permanganate consumed by the moisture attached to the pulp before and after cleaning with a pulp drum washer. The degree of cleaning was 97.6%.
従来のドラム式洗浄機の温水のみの洗浄度は９７．６％
であり、悪臭物質含有ドレン処理液を洗浄水として使用
してもドラム洗浄機の洗浄度は変わりがなかった。The cleaning efficiency of conventional drum-type washing machines using only warm water is 97.6%.
Therefore, even if the drain treatment liquid containing malodorous substances was used as the cleaning water, the cleaning level of the drum cleaning machine did not change.
実施例２
悪臭物質含有ガスの流量を１２３００ｍ３／時で、温度
は７５℃、このガス中の悪臭物質量は１７、９ ＴＲ８
−Ｋｇ／時で、ａ具物質含有ドレンの流量を３６．１ｍ
’／時で、温度は６５℃で、この冷却水中の悪臭物質量
をａ ９ ＴＲ８−Ｋｇ／時、ガス及び冷却水のＧ／Ｌ
比を３４１として、循環ポンプの容量は２００ｍ３７時
として、冷却器には１５℃の１２５ｍ３７時の冷却水が
入り、３０℃で取り出した。他は実施例１と同じ条件で
行った。 ストリッピング後の悪臭物質含有ドレン処理
液は温度が４５℃で、水量は３Ｑ、２ｍ３／時で、悪臭
物質量は０． Ｉ ＴＲ８−Ｋｇ／時であった。この悪
臭物質の除去率は９ａ９％であった。Example 2 The flow rate of malodorous substance-containing gas was 12,300 m3/hour, the temperature was 75°C, and the amount of malodorous substances in this gas was 17.9 TR8
-Kg/hour, the flow rate of the drain containing the substance a is 36.1m
'/hour, the temperature is 65℃, the amount of malodorous substances in this cooling water is a 9 TR8-Kg/hour, G/L of gas and cooling water.
The ratio was set to 341, the capacity of the circulation pump was set to 200 m37 hours, and 125 m37 hours of cooling water at 15°C entered the cooler and was taken out at 30°C. The other conditions were the same as in Example 1. After stripping, the temperature of the drain treatment liquid containing malodorous substances is 45°C, the water volume is 3Q, 2m3/hour, and the amount of malodorous substances is 0. The ITR was 8-Kg/hour. The removal rate of this malodorous substance was 9a9%.
ドラム洗浄機の洗浄度は９７．７％であった。The cleaning degree of the drum washer was 97.7%.
これらの結果から明らかなように、Ｇ／Ｌ比を１５４以
上にすることにより、悪臭物質の除去率を９５％以上に
することが出来、ストリッピングとして満足すべきもの
である。又、ドラム洗浄機のパルプ洗浄度に差が見られ
ずシャワー水として使用しクローズド化を行うことがで
きる。As is clear from these results, by setting the G/L ratio to 154 or more, the removal rate of malodorous substances can be increased to 95% or more, which is satisfactory for stripping. In addition, there is no difference in the pulp cleaning performance of the drum washer, and it can be used as shower water for closed system operation.
別の方法として、温度の高い悪臭物質含有ドレンはドレ
ン入口５より送液し、！ｌｌＡ１１Ｌ物質含有ドレン処
理液を処理液出口８から引き抜く方法。Another method is to send the drain containing malodorous substances at high temperature through the drain inlet 5. A method for drawing out the drain treatment liquid containing the llA11L substance from the treatment liquid outlet 8.
又は、温度の低い悪臭物質含有ドレンはドレン入口９よ
り送液し、悪臭物質含有ドレン処理液の温度として高い
ものは処理液出口８より、温度の低いものは処理液出口
１０より引き抜くことができる。Alternatively, the malodorous substance-containing drain with a low temperature can be sent through the drain inlet 9, the high-temperature malodorous substance-containing drain treatment liquid can be drawn out through the treatment liquid outlet 8, and the low-temperature one can be pulled out through the treatment liquid outlet 10. .
（Ｇ）発明の効果
本発明は１以上説明したように、クラフトパルプ製造工
程から発生する悪臭物質含有ガスを効率よく冷却すると
同時に、悪臭物質含有ドレンを効率よくストリッピング
することができる。更に、悪臭物質含有ドレン処理液は
洗浄工程の洗浄水として使用することができ、実質上悪
臭物質含有ドレン中の悪臭物質又はＣＯＤ、ＢＯＤ物質
をクラフトパルプ製造工程の系外に排出しないことがで
きる。(G) Effects of the Invention As described above, the present invention can efficiently cool the malodorous substance-containing gas generated from the kraft pulp manufacturing process, and at the same time efficiently strip the malodorous substance-containing drain. Furthermore, the malodorous substance-containing drain treatment liquid can be used as washing water in the cleaning process, and it is possible to substantially prevent malodorous substances or COD and BOD substances in the malodorous substance-containing drain from being discharged outside the system of the kraft pulp manufacturing process. .
第１図は悪臭物質含有ドレンの処理装置の概略図。 １・・・悪臭物質含有ガス冷却塔 ２・・・悪ｍ物質含有ガス入口 ３・・・多孔板 ４・・・悪臭物質含有ガス出口 ５．９・・・悪臭物質含有ドレン入口 ６・・・冷却器 ７・・・循環ポンプ ８．１０・・・処理液出口 FIG. 1 is a schematic diagram of a treatment device for drain containing malodorous substances. 1...Gas cooling tower containing malodorous substances 2...Gas inlet containing harmful substances 3...Perforated plate 4...Gas outlet containing malodorous substances 5.9...Drain inlet containing malodorous substances 6...Cooler 7...Circulation pump 8.10...Processing liquid outlet
Claims (2)
有ドレンの処理方法において、製造工程より発生する悪
臭物質含有ガスと悪臭物質含有ドレンを悪臭物質含有ガ
ス冷却塔に送入し、該ガス冷却塔の循環水ラインに冷却
器を設置し、悪臭物質含有ガスの冷却と同時に悪臭物質
含有ドレンをストリッピングすることを特徴とする悪臭
物質含有ドレンの処理方法。(1) In a method for treating drainage containing malodorous substances generated from the kraft pulp manufacturing process, gas containing malodorous substances and drainage containing malodorous substances generated from the manufacturing process are fed into a gas cooling tower containing malodorous substances, A method for treating drainage containing malodorous substances, characterized by installing a cooler in a circulating water line and stripping the drainage containing malodorous substances at the same time as cooling the gas containing malodorous substances.
有ドレンの処理方法において、製造工程より発生する悪
臭物質含有ガスと悪臭物質含有ドレンを悪臭物質含有ガ
ス冷却塔に送入し、該ガス冷却塔の循環水ラインに冷却
器を設置し、悪臭物質含有ガスの冷却と同時に悪臭物質
含有ドレンをストリッピングした後、該ストリッピング
後のガス冷却塔の循環水を洗浄工程の洗浄水として使用
することを特徴とする悪臭物質含有ドレンの処理方法。(2) In a method for treating drainage containing malodorous substances generated from the kraft pulp manufacturing process, gas containing malodorous substances and drainage containing malodorous substances generated from the manufacturing process are fed into a gas cooling tower containing malodorous substances, A cooler is installed in the circulating water line to strip the drain containing malodorous substances at the same time as cooling the gas containing malodorous substances, and then the circulating water from the gas cooling tower after the stripping is used as cleaning water in the cleaning process. Features: A method for treating drain containing malodorous substances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8367088A JPH01260086A (en) | 1988-04-05 | 1988-04-05 | Treatment of drain containing malodorous substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8367088A JPH01260086A (en) | 1988-04-05 | 1988-04-05 | Treatment of drain containing malodorous substance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01260086A true JPH01260086A (en) | 1989-10-17 |
Family
ID=13808910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8367088A Pending JPH01260086A (en) | 1988-04-05 | 1988-04-05 | Treatment of drain containing malodorous substance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01260086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009221638A (en) * | 2008-03-18 | 2009-10-01 | Oji Paper Co Ltd | Method for producing kraft pulp |
-
1988
- 1988-04-05 JP JP8367088A patent/JPH01260086A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009221638A (en) * | 2008-03-18 | 2009-10-01 | Oji Paper Co Ltd | Method for producing kraft pulp |
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