JPS63151400A - Deodorization equipment of sludge storage tank - Google Patents
Deodorization equipment of sludge storage tankInfo
- Publication number
- JPS63151400A JPS63151400A JP61297336A JP29733686A JPS63151400A JP S63151400 A JPS63151400 A JP S63151400A JP 61297336 A JP61297336 A JP 61297336A JP 29733686 A JP29733686 A JP 29733686A JP S63151400 A JPS63151400 A JP S63151400A
- Authority
- JP
- Japan
- Prior art keywords
- storage tank
- sludge storage
- hydrogen sulfide
- ferric chloride
- sludge
- 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 42
- 238000004332 deodorization Methods 0.000 title claims abstract description 15
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 25
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims abstract description 14
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 14
- 238000001179 sorption measurement Methods 0.000 claims description 16
- 239000010865 sewage Substances 0.000 claims description 5
- 230000001877 deodorizing effect Effects 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 12
- 239000007924 injection Substances 0.000 abstract description 12
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000003463 adsorbent Substances 0.000 description 7
- 235000019645 odor Nutrition 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Treating Waste Gases (AREA)
- Activated Sludge Processes (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、下水処理場の汚泥濃縮槽および貯留槽などの
汚泥貯槽から悪臭成分ガスが発生し近隣に拡散すること
を防止するため、悪臭発生源において汚泥貯槽からの悪
臭ガス成分を吸着除去する技術の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is aimed at preventing malodorous component gas from being generated from sludge storage tanks such as sludge thickening tanks and storage tanks in sewage treatment plants and dispersing into the vicinity. This invention relates to improvements in technology for adsorbing and removing malodorous gas components from sludge storage tanks at the source.
（従来の技術）
前記の悪臭成分ガスの吸着除去装置として、実願昭５７
−８５０４２ （実開昭５８−１８２８６９） 、実願
昭５９−５６２１８ （実開昭６０−１６８５２８ ）
を出願した。(Prior art) As an adsorption/removal device for the above-mentioned malodorous component gas,
-85042 (Utility patent application Sho 58-182869), Utility application Sho 59-56218 (Utility patent application Sho 60-168528)
has been applied for.
これ等の装置は各種悪臭ガス成分に対応する吸着剤の種
類の選択とその交換時期を適切に予測する保守管理によ
シ悪臭拡散防止の目的をよく達成し、大川すな湿式脱臭
装置の運転の面倒さがない点で好まれている。These devices successfully achieve the purpose of preventing the spread of bad odors by selecting the type of adsorbent that corresponds to the various malodorous gas components and by maintenance management that appropriately predicts when to replace it. It is preferred because there is no hassle.
（発明が解決しようとする問題点）
汚泥濃縮槽および貯留槽などの排ガスには、平常時にお
いて悪臭ガス成分として硫化水素１〜１０ｐｐｍ、アン
モニア、メルカプタン最大１〜２ｐｐｍ程度の濃度で含
まれている。(Problems to be Solved by the Invention) Exhaust gas from sludge thickening tanks, storage tanks, etc. normally contains hydrogen sulfide as malodorous gas components at a concentration of 1 to 10 ppm, ammonia, and mercaptan at a maximum of 1 to 2 ppm. .
しかしこれらの汚泥貯槽の排ガスは汚泥投入時などにお
いて一時的に硫化水素濃度が１００〜１０００ ｐｐｍ
程度に高くなる。その結果、吸着脱臭装置の吸着剤に対
する負荷が増大し、その寿命が極端に短かくなり、早い
時期に硫化水素の漏洩拡散が起るという問題がある。However, the exhaust gas from these sludge storage tanks temporarily has a hydrogen sulfide concentration of 100 to 1000 ppm, such as when sludge is added.
to a certain extent. As a result, the load on the adsorbent of the adsorption/deodorization device increases, its life becomes extremely short, and hydrogen sulfide leaks and diffuses at an early stage.
本発明は従来技術のこの問題を解決することにより、下
水処理場の汚泥貯槽の悪臭成分ガス吸着除去装置の信頼
性を向上さ亡ることを目的とする。An object of the present invention is to improve the reliability of a malodorous component gas adsorption/removal device for a sludge storage tank in a sewage treatment plant by solving this problem of the prior art.
Ｃ問題点を解決するだめの手段）
前記目的達成のため、本発明の汚泥貯槽の脱臭装置は、
構成上、下水処理場の汚泥貯槽に乾式吸着脱臭塔を接続
して汚泥貯槽からの排ガスを脱臭する場合に、吸着脱臭
塔の入口側に硫化水素濃度計を設け、その計測濃度の上
昇に応じて塩化第２鉄貯槽の塩化第２鉄の汚泥貯槽への
注入量を制御するようにしたことを特徴とする。(Means for Solving Problem C) In order to achieve the above object, the sludge storage tank deodorizing device of the present invention has the following features:
Due to the structure, when a dry adsorption deodorization tower is connected to the sludge storage tank of a sewage treatment plant to deodorize the exhaust gas from the sludge storage tank, a hydrogen sulfide concentration meter is installed at the entrance side of the adsorption deodorization tower, and a hydrogen sulfide concentration meter is installed on the inlet side of the adsorption deodorization tower, and the hydrogen sulfide concentration meter is The present invention is characterized in that the amount of ferric chloride injected into the sludge storage tank from the ferric chloride storage tank is controlled.
（作用）
汚泥貯槽の汚泥中に注入された塩化第２鉄Ｆｅｅｌ ｍ
はこれらの汚泥貯槽には沈降防止用攪拌機がついている
のでＦｅＣ１ｓの濃厚液の注入でよく、攪拌を受けて汚
泥とよく混合し、塩化第２鉄と水中の硫化水素Ｈ，Ｓと
は次の反応式の反応を起して硫化鉄Ｆｅ＊Ｓｇに変化す
る。 この反応速度は大である。(Function) Ferric chloride Feelm injected into sludge in sludge storage tank
Since these sludge storage tanks are equipped with an agitator to prevent sedimentation, it is sufficient to inject a concentrated liquid of FeC1s, which mixes well with the sludge through agitation, and the ferric chloride and hydrogen sulfide H and S in the water are The reaction according to the reaction formula occurs and it changes to iron sulfide Fe*Sg. This reaction rate is high.
３Ｉ（ｘｓ ” ２ＦｅＯ１ｓ” ＦｅｘＳ ＋ ６Ｈ
＊０その結果、汚泥から硫化水素ガスの発生は抑制され
、吸着脱臭装置の吸着剤に対する硫化水素ガスの負荷が
軽減され、寿命が延長される。。3I(xs ” 2FeO1s” FexS + 6H
*0 As a result, the generation of hydrogen sulfide gas from sludge is suppressed, the load of hydrogen sulfide gas on the adsorbent of the adsorption/deodorization device is reduced, and its life is extended. .
次表は試験室におけるＦ ｅ ０１ ｇによるＩ（２８
発生防止実験の結果を示す。、Ｔ（２Ｓは広ロビン剣定
法による揮発性硫化水素の値である。ＰＨを併記した。The following table shows the I(28
The results of the prevention experiment are shown. , T (2S is the value of volatile hydrogen sulfide according to the Hiro-Robin-ken method. PH is also written.
上表からＦｅｅｌｓは１０ ｐｐｍ程度の添加で充分な
効果をあられすことが知られる。過剰添加しないよう制
御すべきである。From the above table, it is known that the addition of Feels at about 10 ppm produces sufficient effects. It should be controlled to avoid excessive addition.
（実施例）
以下、本発明を添付図を参照し実施例に即して具体的に
説明する。添付図は本発明実施例の長寿命吸着式脱臭装
置のフローを示す。(Examples) Hereinafter, the present invention will be specifically described based on examples with reference to the accompanying drawings. The attached diagram shows the flow of a long-life adsorption deodorizing device according to an embodiment of the present invention.
下水処理場の臭気源である汚泥ａｍ槽、貯留槽などの汚
泥貯槽（１）は内部の臭気ガスが放散しないように、た
だし外気の流入が許される程度に密閉される。汚泥貯槽
（１）には汚泥の沈降を防止するだめの緩速攪拌機（２
）が通常装備されている０
沈泥貯槽（１）はファン（３）を備える排ガス経路（４
）によシ吸着脱臭塔（５）に接続される。吸着吸臭基（
５）には各臭気ガス成分に対応する吸着剤（６ンがカー
トリッジ等の交換方式により装填されておシ、ファン（
３）によシ汚泥貯槽（１）から吸出された排ガスは吸着
脱臭塔（５）に押込まれて全量吸着剤（６）の層を通過
しその間に排ガス中の硫化水素、アンモニア、メルカプ
タン等の各臭気ガス成分は吸着除去され、放出口（７）
より外部に放出される。A sludge storage tank (1) such as a sludge am tank or a storage tank, which is a source of odor in a sewage treatment plant, is sealed to prevent the internal odor gas from dissipating, but to the extent that outside air is allowed to flow in. The sludge storage tank (1) is equipped with a slow stirrer (2) to prevent the sludge from settling.
) is usually equipped with a silt storage tank (1) which is connected to an exhaust gas path (4) with a fan (3)
) is connected to an adsorption deodorization tower (5). Adsorption odor absorbing group (
5) is loaded with adsorbents (6 liters) corresponding to each odor gas component using an exchange method such as a cartridge, and is installed in a cylinder or a fan (
3) The exhaust gas sucked out from the sludge storage tank (1) is pushed into the adsorption deodorization tower (5) and passes through a layer of adsorbent (6), during which hydrogen sulfide, ammonia, mercaptans, etc. in the exhaust gas are removed. Each odor gas component is adsorbed and removed, and the discharge port (7)
released to the outside.
本発明の装備として、吸着脱臭塔（５）の入口側の排ガ
ス経路（４）に硫化水素濃度計（８）を接続し、また高
濃度、′例えば６８％の塩化第２鉄を収容する塩化第２
鉄貯槽（９）を設け、それから注入ポンプαＯを備える
注入経路ＣＩηを汚泥貯槽（１）に導く。As equipment of the present invention, a hydrogen sulfide concentration meter (8) is connected to the exhaust gas path (4) on the inlet side of the adsorption deodorization tower (5), and a hydrogen sulfide concentration meter (8) is connected to the exhaust gas path (4) on the inlet side of the adsorption deodorization tower (5). Second
An iron storage tank (9) is provided, from which an injection path CIη with an injection pump αO is led to the sludge storage tank (1).
こうして硫化水素濃度計（８）で計測した硫化水素濃度
信号を伝送制御経路＠を経て注入ポンプ００に送シ注入
ポンプ００の制御運転によシ汚泥貯槽（１）に塩化第２
鉄を前記関係に従う注入量を制御注入するようにする。In this way, the hydrogen sulfide concentration signal measured by the hydrogen sulfide concentration meter (8) is sent to the injection pump 00 via the transmission control path @, and the controlled operation of the injection pump 00 is used to send the sludge storage tank (1) to the sludge storage tank (1).
Iron is injected in a controlled amount according to the above relationship.
硫化水素濃度の増加がなければ注入ポンプα１は停止し
ているが、汚泥投入時等に汚泥貯槽（１）の排ガス中の
硫化水素濃度が一時的に高くなろうとすると、硫化水素
濃度計（７）はその濃度上昇を検知して注入ポンプ（１
０を制御運転して塩化第２鉄を汚泥中に注入し、注入さ
れた塩化第２鉄は緩速攪拌機によシ攪拌されて汚泥中に
均等に混合して硫化鉄を形成し、硫化水素の発生を効果
的に抑制する。If there is no increase in the hydrogen sulfide concentration, the injection pump α1 will stop, but if the hydrogen sulfide concentration in the exhaust gas of the sludge storage tank (1) becomes temporarily high during sludge injection, the hydrogen sulfide concentration meter (7) will stop. ) detects the increase in concentration and sends the infusion pump (1
The ferric chloride is injected into the sludge by controlled operation of 0, and the injected ferric chloride is stirred by a slow stirrer and evenly mixed into the sludge to form iron sulfide, and hydrogen sulfide. effectively suppress the occurrence of
（発明の効果）
本発明装置によると、汚泥貯槽の排ガス中の硫化水素の
一時的増加はその都度抑制されるので、吸着剤の寿命短
縮は防止され、硫化水素の漏洩拡散は防止され、そのだ
めの設備は塩化第２鉄を高濃度で使用できるので貯槽容
量は小さくて済み汚泥貯槽に攪拌機を特設する必要がな
いので設備費は小額で済み、操作費用も少くて添付図は
本発明実施例の汚泥貯槽の脱臭装置のフロー線図である
。(Effects of the invention) According to the device of the present invention, the temporary increase in hydrogen sulfide in the exhaust gas of the sludge storage tank is suppressed each time, so shortening of the life of the adsorbent is prevented, and leakage and diffusion of hydrogen sulfide is prevented. Since the sludge equipment can use ferric chloride at a high concentration, the storage tank capacity is small, and there is no need to specially install an agitator in the sludge storage tank, so the equipment cost is small, and the operation cost is also low. FIG. 2 is a flow diagram of an example sludge storage tank deodorizing device.
（１）・・汚泥貯槽、（２）・・攪拌機、（３）・・フ
ァン、（４）・・排ガス経路、（５）・・吸着脱臭塔、
（６）・・吸着剤、（７）・・放出口、（８）・・硫化
水素濃度計、（９）・・塩化第２鉄貯槽、００・・注入
ポンプ、ＣＩυ・・注入経路、＠・・信号伝送制御経□
路。(1)...Sludge storage tank, (2)...Agitator, (3)...Fan, (4)...Exhaust gas route, (5)...Adsorption deodorization tower,
(6)... Adsorbent, (7)... Outlet, (8)... Hydrogen sulfide concentration meter, (9)... Ferric chloride storage tank, 00... Injection pump, CIυ... Injection route, @・・Signal transmission control □
Road.
Claims (1)
貯槽からの排ガスを脱臭する場合に、吸着脱臭塔の入口
側に硫化水素濃度計を設け、その計測濃度の上昇に応じ
て塩化第２鉄貯槽の塩化第２鉄の汚泥貯槽への注入量を
制御するようにしたことを特徴とする汚泥貯槽の脱臭装
置。When a dry adsorption deodorization tower is connected to a sludge storage tank in a sewage treatment plant to deodorize exhaust gas from the sludge storage tank, a hydrogen sulfide concentration meter is installed on the inlet side of the adsorption deodorization tower, and the chloride concentration meter is A deodorizing device for a sludge storage tank, characterized in that the amount of ferric chloride injected into the sludge storage tank is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61297336A JPS63151400A (en) | 1986-12-13 | 1986-12-13 | Deodorization equipment of sludge storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61297336A JPS63151400A (en) | 1986-12-13 | 1986-12-13 | Deodorization equipment of sludge storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63151400A true JPS63151400A (en) | 1988-06-23 |
Family
ID=17845199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61297336A Pending JPS63151400A (en) | 1986-12-13 | 1986-12-13 | Deodorization equipment of sludge storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63151400A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02119997A (en) * | 1988-10-28 | 1990-05-08 | Kurita Water Ind Ltd | Sludge deodorizer |
| JPH02120000A (en) * | 1988-10-28 | 1990-05-08 | Kurita Water Ind Ltd | Sludge deodorizer |
| JPH02119998A (en) * | 1988-10-28 | 1990-05-08 | Kurita Water Ind Ltd | Sludge deodorizer |
| JPH0435718A (en) * | 1990-05-31 | 1992-02-06 | Kurita Water Ind Ltd | Sludge deodorizing apparatus |
| EP0714856A1 (en) * | 1994-11-25 | 1996-06-05 | Tioxide Group Services Limited | Sewage treatment |
| WO1997007064A1 (en) * | 1995-08-16 | 1997-02-27 | University Of Southampton | Magnetic separation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341056A (en) * | 1976-09-27 | 1978-04-14 | Mitsubishi Heavy Ind Ltd | Sludge water treatment process |
| JPS5919599A (en) * | 1982-07-23 | 1984-02-01 | Toshiba Corp | Anaerobic digestion |
-
1986
- 1986-12-13 JP JP61297336A patent/JPS63151400A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341056A (en) * | 1976-09-27 | 1978-04-14 | Mitsubishi Heavy Ind Ltd | Sludge water treatment process |
| JPS5919599A (en) * | 1982-07-23 | 1984-02-01 | Toshiba Corp | Anaerobic digestion |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02119997A (en) * | 1988-10-28 | 1990-05-08 | Kurita Water Ind Ltd | Sludge deodorizer |
| JPH02120000A (en) * | 1988-10-28 | 1990-05-08 | Kurita Water Ind Ltd | Sludge deodorizer |
| JPH02119998A (en) * | 1988-10-28 | 1990-05-08 | Kurita Water Ind Ltd | Sludge deodorizer |
| JPH0435718A (en) * | 1990-05-31 | 1992-02-06 | Kurita Water Ind Ltd | Sludge deodorizing apparatus |
| EP0714856A1 (en) * | 1994-11-25 | 1996-06-05 | Tioxide Group Services Limited | Sewage treatment |
| WO1997007064A1 (en) * | 1995-08-16 | 1997-02-27 | University Of Southampton | Magnetic separation |
| US6071407A (en) * | 1995-08-16 | 2000-06-06 | University Of Southampton | Magnetic separation |
| GB2304301B (en) * | 1995-08-16 | 2000-06-14 | Univ Southampton | Magnetic separation |
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