JPH01258788A - Method and device for separating oil and water - Google Patents
Method and device for separating oil and waterInfo
- Publication number
- JPH01258788A JPH01258788A JP8534188A JP8534188A JPH01258788A JP H01258788 A JPH01258788 A JP H01258788A JP 8534188 A JP8534188 A JP 8534188A JP 8534188 A JP8534188 A JP 8534188A JP H01258788 A JPH01258788 A JP H01258788A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- water
- fats
- oils
- tanks
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title description 7
- 239000003921 oil Substances 0.000 claims abstract description 43
- 239000003925 fat Substances 0.000 claims abstract description 34
- 238000007667 floating Methods 0.000 claims abstract description 11
- 239000010865 sewage Substances 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims description 38
- 235000014593 oils and fats Nutrition 0.000 claims description 30
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
Landscapes
- Removal Of Floating Material (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、事業場廃水、レストランあるいは食堂等の厨
房廃水等の汚水の油水を分離する方法とその実施に直接
使用する装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for separating oily water from sewage such as industrial wastewater and kitchen wastewater from restaurants and cafeterias, and an apparatus directly used for carrying out the method.
従来、汚水の油水分離は、水と油脂類との比重差により
油脂類を分離浮上させ、単にそれを回収するようにして
いる。Conventionally, in the oil-water separation of wastewater, oils and fats are separated and floated due to the difference in specific gravity between water and oils, and the oils and fats are simply collected.
第８１；Ａ及び第９図は従来公知のグリストラップを示
す。３は内部を仕切壁ｌ・・・・・・によって４個の油
水分離槽２・・・・・・に仕切った水槽で、流入管４か
ら流入する油脂類を含んだ汚水を、各仕切壁１・・・・
・・に架設した移流管５を通じて順次次段の油水分離槽
２に緩慢に移流させ、最後に送出管６から送出するまで
の間に、油脂類を比重差により分離浮上させる構造をな
している。81;A and FIG. 9 show a conventionally known grease trap. 3 is a water tank whose interior is partitioned into four oil-water separation tanks 2 by partition walls L, and the wastewater containing oils and fats flowing in from the inflow pipe 4 is separated from each partition wall. 1...
It has a structure in which oils and fats are separated and floated due to the difference in specific gravity until they are slowly advected sequentially to the next oil-water separation tank 2 through the advection pipe 5 installed in ... and finally sent out from the delivery pipe 6. .
（発明が解決しようとする課題）
しかし、上記においては、分離浮上した油脂類は、これ
を単に引き抜き処分するものであるため含水率が高く、
その引き抜き処分量が多くなる。(Problem to be Solved by the Invention) However, in the above method, the separated and floated oils and fats have a high moisture content because they are simply extracted and disposed of.
The amount to be extracted and disposed of increases.
また十分な管理が行われないと槽内に浮上堆積した油脂
類が流出するおそれがあり、引き抜き作業を相当頻繁に
行う必要がある等の欠点があった。Furthermore, if sufficient management is not carried out, there is a risk that the oils and fats floating and depositing in the tank will flow out, and there are drawbacks such as the need to carry out extraction work quite frequently.
本発明の目的は、このような欠点を解消し、かつ安定し
た水質の送出水とすることにある。An object of the present invention is to eliminate such drawbacks and to provide delivered water of stable water quality.
」二記目的を達成するために採用した本発明方法の構成
は次のとおりである。The structure of the method of the present invention adopted to achieve the second objective is as follows.
ｌη水を油水分離槽７〜９に導入し、油脂類をその比重
差によって分離浮上させ、その浮上油脂類を油脂類貯留
槽７″〜９＃に強制的に送り込む。lη water is introduced into the oil-water separation tanks 7-9, the oils and fats are separated and floated due to the difference in specific gravity, and the floating oils and fats are forcibly sent to the oil-and-fat storage tanks 7''-9#.
そして、油脂類貯留槽７′〜９′内の中間水だけを油水
分離槽７に返戻する。Then, only the intermediate water in the oil and fat storage tanks 7' to 9' is returned to the oil/water separation tank 7.
また、本発明装置の構成は次のとおりである。Further, the configuration of the device of the present invention is as follows.
油水分離槽７〜９と油脂類貯留槽７“〜９＃とを越流壁
７′〜９′を介して隣接設置している。The oil/water separation tanks 7 to 9 and the oil and fat storage tanks 7'' to 9# are installed adjacent to each other via overflow walls 7' to 9'.
上記油水分離槽７〜９内に浮上油脂類を油脂類貯留槽７
“〜９“に強制的に送り込む装置２５〜２７を設置して
いる。The oils and fats floating in the oil-water separation tanks 7 to 9 are stored in the oil storage tank 7.
Devices 25 to 27 for forcibly sending the liquid to "~9" are installed.
油脂類貯留槽７″〜９′と油水分離槽７〜９との間に中
間水汲み上げ装置２９を設けている。An intermediate water pumping device 29 is provided between the oil and fat storage tanks 7''-9' and the oil-water separation tanks 7-9.
かつ上記油水分離槽７〜９に水位変更装置３１を介して
濾過槽１１を接続設置している。A filtration tank 11 is connected to the oil-water separation tanks 7 to 9 through a water level changing device 31.
油水分離槽７〜９において分離浮上した油脂類は、油脂
類貯留槽７′〜９＃に強ａ１的に送り込まれ、かつそこ
の中間水を油水分離槽７〜９に返戻することにより含水
率を減じ濃縮される。The oils and fats separated and floated in the oil-water separation tanks 7-9 are forcefully fed into the oil-and-fat storage tanks 7'-9#, and the intermediate water therein is returned to the oil-water separation tanks 7-9 to reduce the water content. is reduced and concentrated.
したがって、油脂類の引き抜き処分量は、従来にくらべ
て著しく低減し、また、送出水の水質は安定する。Therefore, the amount of oil and fats to be extracted and disposed of is significantly reduced compared to the conventional method, and the quality of the delivered water is stabilized.
以下本発明を実施例について詳細に説明する。 The present invention will be described in detail below with reference to examples.
まず、本発明装置の構成は次のとおりである。First, the configuration of the device of the present invention is as follows.
ａは水槽で、内部に、第一乃至第三油水分離槽７〜９、
これらに越流壁７′〜９′を隔てて隣接する第一乃至第
三油脂類貯留槽７″〜９＃、水位調整槽ｌＯ１濾過槽１
１及び中間水槽１２を区画形成している。a is a water tank, inside which are first to third oil-water separation tanks 7 to 9;
Adjacent to these with overflow walls 7' to 9' are the first to third oil storage tanks 7'' to 9#, the water level adjustment tank 1O1, the filtration tank 1
1 and an intermediate water tank 12 are partitioned.
１３は、第一油水分離槽７に設けた導入管で、この導入
管１３から第一油水分離槽７に導入された汚水は、仕切
壁１４〜１６に架設の移流管１７〜１９を通じて第二油
水分離槽８、第三油水分離槽９、水位調整槽１０へと緩
（移流したのち、連通孔２０を介し、濾過槽１１に設け
た送出管２１から送出する構造になっている。13 is an introduction pipe provided in the first oil-water separation tank 7, and the wastewater introduced from this introduction pipe 13 into the first oil-water separation tank 7 is transferred to the second oil-water separation tank 7 through advection pipes 17-19 installed on the partition walls 14-16. After being slowly (advectioned) to the oil-water separation tank 8, the third oil-water separation tank 9, and the water level adjustment tank 10, it is sent out from the delivery pipe 21 provided in the filtration tank 11 via the communication hole 20.
２２〜２４は、仕切壁１４〜１６の第一乃至第三油脂類
貯留槽７＃〜９′を仕切っている部分の下半部に設けた
移流口で、第一乃至第三油脂類貯留槽７″〜９′は、こ
れら移流口２２〜２４により中間水［１２に連通してい
る。Reference numerals 22 to 24 denote advection ports provided in the lower half of the parts of the partition walls 14 to 16 that partition the first to third oil and fat storage tanks 7# to 9';7'' to 9' communicate with the intermediate water [12] through these advection ports 22 to 24.
２５〜２７は、第一乃至第三油水分離槽７〜９内であっ
て第一乃至第三油脂類貯留槽７″〜９′とは反対側の底
面近くに設置された、上記油水分離槽に浮上油脂類を油
脂類貯留槽に強制的に送り込む装置たる散気管で、送風
機２８に各別に所要のバルブを介して配管接続している
。Reference numerals 25 to 27 refer to the oil/water separation tanks 7 to 9, which are installed near the bottom on the opposite side from the first to third oil/fat storage tanks 7'' to 9'. An aeration pipe is a device for forcibly feeding the floating oils and fats into the oil storage tank, and is connected to the blower 28 through respective required valves.
２９は中間水槽１２に架設した中間水汲み上げ装置たる
エアリフトポンプ装置で、それは同じく送風機２８に所
要のバルブを介して接続し、中間水槽１２の中間水を汲
み上げて返送管３０を通じ第一油水分離槽７に返送する
ためのものである。Reference numeral 29 denotes an air lift pump device, which is an intermediate water pumping device installed in the intermediate water tank 12. It is also connected to the blower 28 via a required valve, and pumps up the intermediate water from the intermediate water tank 12 to the first oil-water separation tank through the return pipe 30. 7 to be sent back.
３１は水位調整槽１０に設置した水位変更装置で、隔壁
３２の凹欠部３３に調整板３４を抜き差し自在に装架し
てなる。Reference numeral 31 denotes a water level changing device installed in the water level adjusting tank 10, in which an adjusting plate 34 is mounted in a recessed notch 33 of a partition wall 32 so as to be freely inserted and removed.
３５は濾過槽１１に張架内装した油脂類濾過材である。Reference numeral 35 denotes an oil and fat filter material which is installed in the filter tank 11 in a suspended manner.
上記構成の本発明装置による油水分離は次のように行わ
れる。Oil-water separation by the apparatus of the present invention having the above configuration is performed as follows.
水位変更袋Ｗ ３１ （’） ｔＮ整板３４を凹欠部３
３に挿着し、導入管１３から導入された汚水が、第−乃
至第三油水分離槽７〜９から越流壁７′〜９′を越えて
第一乃至第三油脂類貯留槽７″〜９″に流入する状態に
まで、水位を上昇させる（第５図）とともに、各散気管
２５〜２７から一斉に散気する。Water level change bag W 31 (') tN adjustment plate 34 with concave notch 3
3, and the sewage introduced from the inlet pipe 13 flows from the first to third oil/water separation tanks 7 to 9 over the overflow walls 7' to 9' to the first to third oil and fat storage tanks 7''. 9'' (Fig. 5), and air is diffused all at once from each of the aeration pipes 25 to 27.
これにより、第一乃至第三油水分離槽７〜９の各々には
、各散気管２５〜２７のところで上昇し、上面では第一
乃至第三油脂類貯留槽７″〜９″に向かう循環水流を生
じ、各油水分離槽７〜９内で水面に浮上した油脂類は、
その水流によって、対応の油脂類貯留槽７″〜９＃に強
制的に送り込まれる（第６図）。As a result, in each of the first to third oil/water separation tanks 7 to 9, a circulating water flow rises at each diffuser pipe 25 to 27 and heads toward the first to third oil and fat storage tanks 7'' to 9'' at the upper surface. The oils and fats that surfaced on the water surface in each oil-water separation tank 7 to 9 are
The water flow forces the oil into the corresponding oil and fat storage tanks 7'' to 9# (FIG. 6).
所要の時期（各油水分離槽７〜９内の浮遊油脂類量を観
察して適宜法める）に、調整板３４を凹欠部３３から引
き抜き、各油水分離槽７〜９の水位を下げることによっ
て、その油水分離槽７〜９と油脂類貯留槽７＃〜９＃を
越流壁７′〜９′で隔離する（第７図）。At the required time (observe the amount of floating oils and fats in each oil-water separation tank 7-9 and adjust accordingly), pull out the adjustment plate 34 from the recessed part 33 to lower the water level in each oil-water separation tank 7-9. As a result, the oil/water separation tanks 7 to 9 and the oil and fat storage tanks 7# to 9# are separated by overflow walls 7' to 9' (FIG. 7).
そして、エアリフトポンプ装置２９を作動し、中間水槽
１２の中間水を返送管３０により第一油水分離槽７に返
送し、これにより、各油脂類貯留槽７″〜９″内の油脂
類の含水率を下げ濃縮する。Then, the air lift pump device 29 is operated to return the intermediate water in the intermediate water tank 12 to the first oil-water separation tank 7 through the return pipe 30, thereby causing the water content of the oils and fats in each of the oils and fats storage tanks 7'' to 9''. Reduce the rate and concentrate.
このとき、必要に応じ所要の分解酵素を投入し上記油脂
類の分解あるいは自己消化を促進させる。At this time, necessary degrading enzymes are added as necessary to promote decomposition or self-digestion of the fats and oils.
これによって、油脂類の引き抜き処分量は著しく減少す
るものである。As a result, the amount of oils and fats to be extracted and disposed of is significantly reduced.
特に、上記分解酵素の投入は、本発明では流れのない油
脂類貯留槽７″〜９″に行うので、従来の油水分離槽の
゛流水中に投入する場合のように、流出しやすく分解効
果をあまり期待できないというようなことなく、持続効
果があるとともに投入量を大幅に減らすこともでき、経
済的である。In particular, in the present invention, the above-mentioned degrading enzyme is introduced into the oil and fat storage tank 7'' to 9'', which has no flow, so it easily flows out and has no decomposition effect, unlike when it is introduced into the flowing water of a conventional oil-water separation tank. It is economical because it has a long-lasting effect and the amount of input can be significantly reduced without giving rise to any negative expectations.
一方、水位調整槽１０から濾過槽１１に流入したｔη水
は、さらに残留油脂類を油脂ｔＵｔ過材３５で濾過され
たあと、送出管２１から安定した水質の送出水として送
出される。On the other hand, the tη water flowing into the filtration tank 11 from the water level adjustment tank 10 is further filtered to remove residual oils and fats by the oil tUt filter material 35, and then sent out from the delivery pipe 21 as delivery water of stable water quality.
以上述べたところから明らかなように、本発明方法は、
汚水を油水分離槽に導入して油脂類を分離浮上させ、そ
の浮上油脂類を油脂類貯留槽に強制的に送り込むととも
に、該油脂類貯留槽の中間水を油水分離槽に返送するも
のであるから、油脂類貯留槽に貯留の油脂類は、含水率
が低く、したがって、従来の方法にくらべて抜き取り処
分量を著しく少なくでき、かつまた送出水の水質を安定
したものにすることができる。As is clear from the above, the method of the present invention
Sewage is introduced into an oil-water separation tank to separate and float oils and fats, and the floating oils and fats are forcibly sent to an oil-and-fats storage tank, and intermediate water in the oil-and-fats storage tank is returned to the oil-water separation tank. Therefore, the oils and fats stored in the oils and fats storage tank have a low moisture content, so the amount of extraction and disposal can be significantly reduced compared to the conventional method, and the quality of the delivered water can be stabilized.
また、本発明装置によれば、上記方法の実施を効果的に
行うことができるのに加え、送出水はその送出直前に濾
過槽で濾過されるので、油脂類の含有率が種度に低くな
り、安定した水質となる。Furthermore, according to the apparatus of the present invention, in addition to being able to carry out the above-mentioned method effectively, the delivered water is filtered in the filter tank immediately before being delivered, so the content of oils and fats is extremely low. This results in stable water quality.
図面は本発明の実へ例を示すもので、第１図は平面図、
第２．３．４図はそれぞれ第１図のＩ−■線、ｎ−ｎ線
、ｍ−ｍ線断面図、第５図は油水分離槽の水位上昇時の
要部断面図、第６図は分離浮上油脂類を貯留槽に送り込
んでいる時の要部断面図、第７図は油水分離槽の水位下
降時の要部断面図、第８図は従来公知のグリストラップ
の平面図、第９図は同上の断面図である。
７〜９・・・・・・油水分離槽、７１〜９′・・・・・
・油脂類貯留槽、７′〜９′・・・・・・越流壁、２５
〜２７・・・・・・浮上油脂類を油脂類貯留槽に送り込
む装置たる散気管、２９・・・・・・中間水汲み上げ装
置たるエアリフトポンプ装置、３１・・・・・・水位変
更装置、１１・・・・・・濾過槽。
第２図
汁３図
第４図The drawings show examples of the present invention; FIG. 1 is a plan view;
Figures 2, 3, and 4 are cross-sectional views taken along lines I-■, n-n, and m-m in Figure 1, Figure 5 is a cross-sectional view of the main parts of the oil-water separation tank when the water level rises, and Figure 6 7 is a sectional view of the main part when separating and floating oils and fats are being sent to the storage tank, FIG. 7 is a sectional view of the main part when the water level of the oil-water separation tank is falling, and FIG. FIG. 9 is a sectional view of the same as above. 7-9...Oil water separation tank, 71-9'...
・Oils and fats storage tank, 7' to 9'... Overflow wall, 25
〜27... Air diffuser pipe serving as a device for feeding floating oils and fats into the oil storage tank, 29... Air lift pump device serving as an intermediate water pumping device, 31... Water level changing device, 11...Filtration tank. Figure 2 Soup 3 Figure 4
Claims (1)
せ、その浮上油脂類を油脂類貯留槽に強制的に送り込む
とともに、油脂類貯留槽の中間水だけを油水分離槽に返
戻することを特徴とする油水分離方法。 ２、油水分離槽と油脂類貯留槽とを越流壁を介して隣接
設置するとともに、上記油水分離槽に浮上油脂類を油脂
類貯留槽に強制的に送り込む装置を設置し、油脂類貯留
槽と油水分離槽との間に中間水汲み上げ装置を設け、か
つ上記油水分離槽に水位変更装置を介して濾過槽を接続
設置してなることを特徴とする油水分離装置。[Claims] 1. Sewage is introduced into an oil-water separation tank to separate and float the oils and fats, and the floating oils and fats are forcibly sent to the oils and fats storage tank, and only the intermediate water in the oils and fats storage tank is removed. An oil-water separation method characterized by returning the oil to a water-separation tank. 2. An oil-water separation tank and an oil-and-fats storage tank are installed adjacent to each other via an overflow wall, and a device is installed in the oil-water separation tank to forcibly feed the floating oils and fats into the oil-and-fats storage tank. An oil-water separator comprising: an intermediate water pumping device provided between the oil-water separator and an oil-water separator; and a filtration tank connected to the oil-water separator via a water level change device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8534188A JPH01258788A (en) | 1988-04-08 | 1988-04-08 | Method and device for separating oil and water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8534188A JPH01258788A (en) | 1988-04-08 | 1988-04-08 | Method and device for separating oil and water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01258788A true JPH01258788A (en) | 1989-10-16 |
| JPH0420641B2 JPH0420641B2 (en) | 1992-04-06 |
Family
ID=13855953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8534188A Granted JPH01258788A (en) | 1988-04-08 | 1988-04-08 | Method and device for separating oil and water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01258788A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010097084A (en) * | 2000-04-20 | 2001-11-08 | 김무영 | Sludge and oil sepanator and a method thereof |
| JP2012055812A (en) * | 2010-09-07 | 2012-03-22 | Chugoku Electric Power Co Inc:The | Oil/water separation method and oil/water separation system |
-
1988
- 1988-04-08 JP JP8534188A patent/JPH01258788A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010097084A (en) * | 2000-04-20 | 2001-11-08 | 김무영 | Sludge and oil sepanator and a method thereof |
| JP2012055812A (en) * | 2010-09-07 | 2012-03-22 | Chugoku Electric Power Co Inc:The | Oil/water separation method and oil/water separation system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0420641B2 (en) | 1992-04-06 |
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