JP3700619B2 - Jellyfish processing apparatus and processing method - Google Patents
Jellyfish processing apparatus and processing method Download PDFInfo
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- JP3700619B2 JP3700619B2 JP2001225839A JP2001225839A JP3700619B2 JP 3700619 B2 JP3700619 B2 JP 3700619B2 JP 2001225839 A JP2001225839 A JP 2001225839A JP 2001225839 A JP2001225839 A JP 2001225839A JP 3700619 B2 JP3700619 B2 JP 3700619B2
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Description
【0001】
【発明の属する技術分野】
本発明は、くらげの処理装置及び処理方法に係り、特に、工業用冷却水等を採水する海水水路で回収されたくらげを処理する装置及び方法に関する。
【0002】
【従来の技術】
発電所、化学コンビナート、製鉄所等のプラントでは、海水が工業用冷却水として大量に使用されているが、この海水の採水のための海水水路には大量のくらげや海水藻などの浮遊性海棲生物が押し寄せる。このくらげ等の浮遊性海棲生物を放置すると、配管閉塞、海水採水量の低下、冷却効率の低下、ひいては装置故障、発電装置等の装置稼動効率の低下等の様々な障害を引き起こすため、取水路入り口にスクリーンを設け、押し寄せたくらげ等をかき揚げて回収し、処分している。特に、くらげは夏場に異常繁殖し、取水口のスクリーンによって1日に数十トンも捕捉される。
【0003】
従来、滓渣としてのくらげ等は地面に掘った穴に放置されていたが、夏場には量が多いことも相俟って、魚の腐敗したような臭気の発生や、投棄箇所からの汚水の流出といった環境汚染の問題があり、更に投棄場所の確保、投棄場所への運搬コスト等も大きな問題となっていた。
【0004】
回収したくらげを処理する方法として、くらげを破砕して懸濁水とし、この懸濁水を凝集沈殿処理する方法(特開平4−48986号公報)や、くらげを破砕して脱水し、脱水濾液を酸化等により浄化する方法(特公平1−31343号公報)が公知である。
【0005】
【発明が解決しようとする課題】
くらげを処理前の貯留槽に貯留させておくと、特に気温の高い夏季にあっては、腐敗が進行し、臭気が強くなる。また、くらげが溶化して水の処理負荷が高くなり、最終処理水のCODも高くなる。
【0006】
本発明は、貯留槽におけるくらげの腐敗進行を抑制することを第1の目的とする。
【0007】
また、本発明は、くらげを減容化して廃棄物量を低減すると共に、減容化により発生する廃液のCOD負荷を減らして効率的に処理することができる処理装置及び処理方法を提供することを第2の目的とする。
【0008】
【課題を解決するための手段】
本発明は、くらげの貯留槽の温度を低下させることにより貯留槽内のくらげの腐敗を防止するようにしたものであり、本発明のくらげの処理装置は、温度低下手段を備えたくらげの貯留槽と、この貯留槽から取り出されたくらげを破砕する手段と、この破砕物含有水に泡沫固化剤を添加した後、凝集分離処理する手段とを有することを特徴とする。
【0009】
また、本発明のくらげの処理方法は、くらげを貯留槽に貯留し、この貯留槽からくらげを取り出し、破砕した後泡沫固化剤を添加し、その後凝集分離処理するくらげの処理方法であって、該貯留槽に温度低下処理を施すことを特徴とする。
【0010】
このように貯留槽の温度を低下させるには、貯留槽に海水を散水するのが好ましい。この海水は、海から採取した直後の温度の低い海水が好適である。なお、必要に応じ、深度の深い低温海水を採取して散水してもよい。
【0011】
なお、くらげの破砕に伴って泡沫が発生することが多いので、本発明のくらげの処理装置及び処理方法では、くらげの破砕物含有水にミョウバン等の泡沫固化剤を添加した後、凝集分離処理する。このように泡沫固化剤を添加することにより、泡沫分に濃縮されているタンパクなどが凝固する。このため、泡沫が分離し易くなり、さらに泡沫側に濃縮されたタンパクなどが再溶解して液状分のCOD負荷を増大させることを防止する。このため、泡沫分と液状分との分離が容易となると共に、液状分のCOD負荷を減らすことができ、浄化処理が容易になる。
【0012】
本発明では、泡沫固化剤を添加した後、泡沫を分離してもよい。
【0013】
本発明では、泡沫固化剤を添加した後、必要に応じ泡沫を分離し、その後、凝集剤を添加して固液分離し、分離水を浄化してもよい。この場合、分離水は、濾過し、得られた濾過処理水を活性炭で処理することにより浄化することが好ましい。
【0014】
【発明の実施の形態】
以下に図面を参照して本発明の実施の形態を詳細に説明する。
【0015】
図1は本発明のくらげの処理装置及び処理方法の実施の形態を示す系統図である。
【0016】
なお、以下においては、くらげを処理対象とした例を示すが、本発明のくらげの処理装置及び処理方法において、処理対象物中にはくらげ以外の海棲生物が存在していても良い。
【0017】
取水路に押し寄せ、入り口のバースクリーン等に引っかかって回収されたくらげは、くらげ貯留槽1に貯留される。この貯留槽1には、貯留槽1内の温度を低下させるために海水を散水する散水器10が設けられている。なお、海水の散水により貯留槽1内の水位が上昇するが、この水は貯留槽1からオーバーフローされ、海に戻される。
【0018】
この貯留槽1内のくらげは、くらげ破砕手段2で破砕される。くらげを破砕することにより、CODが濃縮された泡沫分とCODの低い液状分とからなるくらげ含有水が得られる。なお、破砕手段として、貯留槽1から泡沫分離槽3に移送する移送路に回転刃のついた破砕ポンプを設け、破砕しながら移送することが好ましい。このようにすれば、くらげ含有水を一定流速で移送できると共に、移送中に破砕も行うことができる。ただし、ミキサーなどの破砕機をポンプとは別個に設置してもよい。
【0019】
本実施の形態では、この破砕後のくらげ含有水に泡沫固化剤を添加して泡沫分と液状分とに分離する。この泡沫固化剤としては、泡沫分の分離性を高めることができるもの、即ち、タンパクを凝固させる作用を有するものであれば良く、特に制限はないが、ミョウバンが好ましく、具体的には、硫酸アルミニウム(Al2(SO4)3)と他の物質との複合塩を用いることができ、複合塩としては、硫酸アルミニウムカリウムAlK(SO4)2(カリウムミョウバン)、硫酸アルミニウムナトリウムAlNa(SO4)2(ナトリウムミョウバン)等が挙げられる。これらのミョウバンは1種を単独で用いても2種以上を併用しても良い。泡沫固化剤としては、特に、泡沫固化効果、腐敗臭防止効果に優れることから、カリウムミョウバンを用いるのが好ましい。
【0020】
このような泡沫固化剤の添加量は、くらげ含有水に対して通常50〜5000mg/L、好ましくは500〜2000mg/L程度であり、例えば、カリウムミョウバンの10重量%水溶液として5000〜20000mg/L程度添加するのが好ましい。
【0021】
泡沫固化剤は、泡沫分離槽3への移送路にて添加されてもよく、泡沫分離槽3内に添加されてもよい。
【0022】
この実施の形態では、破砕及び泡沫固化剤の添加が行われたくらげ含有水は、泡沫分離槽3にて、泡沫固化剤により凝固させた泡沫分と、液状分とに分離する。この泡沫分離槽3としては、例えば、泡沫分をレーキなどで掻き取って分離するものなどを用いることができる。
【0023】
この泡沫分離槽3で分離された泡沫分は、後述の凝集分離槽5の凝集汚泥と共に、凝集剤として高分子凝集剤を好ましくは5〜100mg/L好ましくは20〜50mg/L程度添加して、フィルタプレス、ベルトプレス、遠心脱水機などの脱水機4で脱水処理する。脱水により得られた脱水濾液は上記液状分と混合して処理することが好ましい。脱水ケーキは埋め立て、乾燥、焼却などで処分される。
【0024】
この実施の形態では、泡沫分離槽3からの液状分は、脱水機4の脱水濾液と共に凝集分離槽5に移送し、凝集剤を添加して凝集分離処理する。
【0025】
ここで用いる凝集剤としては、鉄塩、硫酸アルミニウム、ポリ塩化アルミニウムなどの無機凝集剤が好適であり、特に、鉄塩、とりわけ、中性付近で凝集する塩化第二鉄、硫酸第2鉄などの第二鉄塩が最適である。凝集剤の添加量は通常500〜10000mg/L程度、例えば38重量%の塩化第二鉄の場合で1000〜5000mg/L程度で十分である。
【0026】
この凝集処理においては、凝集助剤としてアニオン系高分子凝集剤を併用添加するのが好ましく、その添加量は1〜20mg/L、特に3〜10mg/L程度とするのが好ましい。
【0027】
この凝集分離槽5の形式としては特に制限はないが、くらげの凝集成分は軽くて浮上し易いので加圧浮上による凝集分離槽が好適である。ただし、凝集沈殿槽を用いても良い。凝集汚泥は泡沫分と混合して、或いは混合せずに単独で凝集剤を添加して脱水等を行って埋め立て、焼却などで処分する。好ましくは、凝集汚泥は泡沫分と混合し、凝集剤を添加して脱水処理する。
【0028】
凝集分離槽5の分離水は、濾過器6で濾過した後、活性炭塔7で処理してCODを除去し、処理水は放流する。
【0029】
なお、この分離水の浄化手段としては、凝集分離水中のCODを除去できるものであれば良く、図1のような、濾過器6と活性炭塔7との組み合わせの他、
(1) 酸化処理後、活性炭処理
(2) 生物処理
(3) 酸化処理後、膜濾過処理
(4) 膜濾過処理後、酸化処理、その後活性炭処理
等のようにCODの酸化分解や濾過、吸着処理を適宜組み合わせたものを採用することができる。
【0030】
上記実施の形態では、泡沫固化剤を添加した後、泡沫を分離槽3で分離しているが、図2の通り、この泡沫分離を行わなくてもよい。即ち、くらげ破砕物含有水に泡沫固化剤を添加した後、そのまま(即ち泡沫分離を行うことなく)凝集分離槽5に送ってもよい。図2のその他の処理は図1と同一である。
【0031】
【実施例】
以下に実施例及び比較例を挙げて本発明をより具体的に説明する。
【0032】
実施例1
図1に示すフローに従って、くらげを処理した。
【0033】
海水から分離されたくらげを貯留槽1に貯留した。この貯留槽1内の温度上昇を防ぐために、海から汲み上げた海水を散水器10から散水し、貯留槽1内の温度を25℃に保った。この貯留槽に貯留されたくらげを回転刃のついた破砕ポンプで破砕しながら泡沫分離槽3に移送した。泡沫分離槽3内のくらげ含有水は下部が白濁した液状分で上部が泡沫分となっていた。ここにカリウムミョウバンの10重量%水溶液を5000mg/L添加し(カリウムミョウバン添加量500mg/L)、レーキで泡沫分を掻き取った。次に、泡沫分を掻き取って分離された液状分と脱水機からの濾液に、38重量%の塩化第二鉄水溶液2000mg/Lとアニオン系高分子凝集剤10mg/Lを添加し、加圧浮上分離槽に導入し、凝集浮上汚泥と分離水を得た。この分離水を、上層がアンスラサイト、下層が砂からなる2層濾過器に下向流で通水した後、粒状活性炭を充填した活性炭塔に下向流通水し、処理水を得た。
【0034】
なお、凝集分離汚泥は泡沫分と混合し、高分子凝集剤20mg/Lを添加して、遠心脱水機で脱水処理し、脱水ケーキは廃棄し、濾液は液状分と混合した。
【0035】
この処理において、凝集分離処理前、凝集分離処理後、及び活性炭処理後の処理水のCOD濃度(CODMn)は表1に示す通りであった。
【0036】
比較例1
実施例1において、海水を散水しなかったこと以外は同様にしてくらげを処理した。その結果、貯留槽1の温度は平均35℃となった。各処理水の水質は表1の通りであった。
【0037】
実施例2
図2のフローによりくらげを処理した。これは、実施例1において、カリウムミョウバンを添加後、泡沫分離を行わない処理に相当する。貯留槽1には海水を散水し、貯留槽1の水温を25℃とした点は実施例1と同じである。結果を表1に示した。
【0038】
比較例2
貯留槽1に海水を散水しなかったこと以外は実施例2と同様の操作を行い、結果を表1に示した。なお、貯留槽1の水温は平均35℃にまで上昇した。
【0039】
【表1】
【0040】
表1の実施例1と比較例1との対比及び実施例2と比較例2との対比から明らかな通り、貯留槽1に海水を散水してその水温を低くすることにより、凝集分離前の水のCOD濃度が低くなり、最終処理水のCODも低くなる。これは、くらげの腐敗による溶化が抑制されるためであると推察される。
【0041】
また、実施例1と実施例2との対比から明らかな通り、カリウムミョウバンを添加して泡沫を分離する(実施例1)と、凝集分離前の水のCOD濃度が低くなり、最終処理水のCODも低くなる。この傾向は比較例1と比較例2との対比からも認められる。
【0042】
なお、実施例1,2及び比較例1,2において、それぞれ貯留槽を毎日観察して白濁状態や臭気を観察したところ、実施例1,2は比較例1,2に比べて腐敗の進行がきわめて遅いことが認められた。
【0043】
【発明の効果】
以上詳述した通り、本発明のくらげの処理装置及び処理方法によれば、貯留槽におけるくらげの腐敗が抑制され、この結果、最終処理水の水質も良好なものとなる。
【図面の簡単な説明】
【図1】 本発明のくらげの処理装置及び処理方法の実施の形態を示す系統図である。
【図2】 本発明のくらげの処理装置及び処理方法の別の実施の形態を示す系統図である。
【符号の説明】
1 くらげ貯留槽
2 くらげ破砕手段
3 泡沫分離槽
4 脱水機
5 凝集分離槽
6 濾過器
7 活性炭塔
10 散水器[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a processing apparatus and processing method of the saddle down, in particular, to an apparatus and method for processing the recovered saddle up seawater waterway for water sampling the industrial cooling water or the like.
[0002]
[Prior art]
In plants such as power plants, chemical complexes, and steelworks, seawater is used in large quantities as industrial cooling water, but the seawater channel for sampling seawater has a large amount of floating properties such as jellyfish and seaweed. Marine life rushes. If these floating jellyfish and other floating marine organisms are left unattended, they will cause various obstacles such as pipe blockage, reduction in seawater sampling, cooling efficiency, equipment failure, and equipment operation efficiency such as power generation equipment. A screen is installed at the entrance of the road, and the jellyfish that have been pushed up are collected and disposed of. In particular, jellyfish breed abnormally in the summer, and dozens of tons are captured a day by the screen of the intake.
[0003]
Traditionally, jellyfish, etc., as a residue have been left in holes dug in the ground, but due to the large amount in summer, odors such as spoilage of fish and sewage from dumped places There was a problem of environmental pollution such as spillage, and the problem of securing the dumping site and the cost of transporting it to the dumping site was also a big problem.
[0004]
As a method of treating the collected jellyfish, the jellyfish is crushed into suspension water, the suspension water is agglomerated and precipitated (Japanese Patent Laid-Open No. 4-48986), or the jellyfish is crushed and dehydrated, and the dehydrated filtrate is oxidized. A method of purifying by the above (Japanese Patent Publication No. 1-31343) is known.
[0005]
[Problems to be solved by the invention]
If allowed to store the saddle up in the storage tank of the pretreatment, in a particularly high-temperature summer, corruption proceeds, the odor becomes stronger. Also, the saddle-up is soluble high processing load of water, the higher COD of the final treated water.
[0006]
The present invention is to suppress the rotting progression of saddle up in the storage tank and the first object.
[0007]
Further, the present invention is to provide with reducing waste and volume reduction saddled up, the processing apparatus and processing method can be processed efficiently by reducing the COD load of waste liquid generated by volume reduction Is the second purpose.
[0008]
[Means for Solving the Problems]
The present invention has been to prevent the corruption of jellyfish in the storage tank by lowering the temperature of the reservoir of the jellyfish, processing apparatus jellyfish of the present invention, retention of the jellyfish with a temperature drop means to the vessel, means for crushing the reservoir or al preparative Ride been jellyfish, after addition of foam solidifying agent to the crushed-containing water, wherein the Turkey of having a means for coagulation and separation process .
[0009]
The processing method of the jellyfish of the present invention, storing the jellyfish in the storage tank, taken out jellyfish from the reservoir, the addition of foam solidifying agent after crushing, a method of processing subsequent coagulation and separation processing jellyfish, The storage tank is subjected to a temperature lowering process.
[0010]
Thus, in order to lower the temperature of the storage tank, it is preferable to spray seawater into the storage tank. This seawater is preferably seawater having a low temperature immediately after being collected from the sea. If necessary, deep low-temperature seawater may be collected and sprinkled.
[0011]
In addition, since foam is often generated along with the jellyfish crushing, in the jellyfish processing apparatus and processing method of the present invention, after adding a foam solidifying agent such as alum to the jellyfish crushed material-containing water, agglomeration separation treatment you. By adding the foam solidifying agent in this manner, the protein concentrated in the foam is coagulated. For this reason, it becomes easy to isolate | separate a foam, and also prevents the protein etc. which were concentrated on the foam side redissolving and increasing the COD load of a liquid part. This facilitates separation of the foam and liquid components, reduces the COD load of the liquid components, and facilitates the purification process.
[0012]
In the present invention, the foam may be separated after adding the foam solidifying agent.
[0013]
In this invention, after adding a foam solidification agent, a foam may be isolate | separated as needed, and after that, a flocculant may be added and it may be solid-liquid separated, and purified water may be purified. In this case, it is preferable to purify the separated water by filtering and treating the obtained filtered water with activated carbon.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
FIG. 1 is a system diagram showing an embodiment of a jellyfish processing apparatus and processing method of the present invention.
[0016]
In the following, an example in which the Ku jellyfish processed, the processing apparatus and processing method of the jellyfish of the present invention, may be present sea棲生object other than jellyfish while processing the object .
[0017]
The jellyfish that has been pushed to the intake channel and caught by the bar screen or the like at the entrance is stored in the jellyfish storage tank 1. The storage tank 1 is provided with a
[0018]
The jellyfish in the storage tank 1 is crushed by the jellyfish crushing means 2. By pulverizing the jellyfish, jellyfish-containing water consisting of a foam component in which COD is concentrated and a liquid component having a low COD is obtained. In addition, as a crushing means, it is preferable to provide a crushing pump with a rotary blade in a transfer path for transferring from the storage tank 1 to the foam separation tank 3 and transfer it while crushing. In this way, the jellyfish-containing water can be transferred at a constant flow rate and can be crushed during the transfer. However, a crusher such as a mixer may be installed separately from the pump.
[0019]
In this Embodiment, a foam solidification agent is added to this jellyfish containing water after crushing, and it isolate | separates into a foam part and a liquid part. The foam solidifying agent is not particularly limited as long as it can improve the separation of foam, that is, has a function of coagulating proteins. Alum is preferred, specifically sulfuric acid. A composite salt of aluminum (Al 2 (SO 4 ) 3 ) and another substance can be used. Examples of the composite salt include potassium aluminum sulfate AlK (SO 4 ) 2 (potassium alum), sodium aluminum sulfate AlNa (SO 4). ) 2 (sodium alum) and the like. These alums may be used alone or in combination of two or more. As the foam solidifying agent, it is particularly preferable to use potassium alum since it is excellent in the foam solidifying effect and the rot odor preventing effect.
[0020]
The amount of the foam solidifying agent added is usually about 50 to 5000 mg / L, preferably about 500 to 2000 mg / L with respect to the jellyfish-containing water, for example, 5000 to 20000 mg / L as a 10% by weight aqueous solution of potassium alum. It is preferable to add a certain amount.
[0021]
The foam solidifying agent may be added in the transfer path to the foam separation tank 3 or may be added to the foam separation tank 3.
[0022]
In this embodiment, the jellyfish-containing water that has been crushed and added with the foam solidifying agent is separated into a foam component solidified by the foam solidifying agent and a liquid component in the foam separation tank 3. As this foam separation tank 3, for example, one that scrapes and separates the foam with a rake or the like can be used.
[0023]
The foam separated in the foam separation tank 3 is added with a polymer flocculant, preferably about 5 to 100 mg / L, preferably about 20 to 50 mg / L as a flocculant together with agglomerated sludge in the agglomeration separation tank 5 described later. Then, dehydration is performed by a dehydrator 4 such as a filter press, a belt press, or a centrifugal dehydrator. The dehydrated filtrate obtained by dehydration is preferably mixed with the liquid component and treated. Dehydrated cake is disposed of by landfill, drying, or incineration.
[0024]
In this embodiment, the liquid component from the foam separation tank 3 is transferred to the coagulation / separation tank 5 together with the dehydrated filtrate of the dehydrator 4, and a coagulant is added for coagulation separation treatment.
[0025]
As the flocculant used here, inorganic flocculants such as iron salt, aluminum sulfate, and polyaluminum chloride are suitable. In particular, iron salts, especially ferric chloride and ferric sulfate that aggregate near neutrality. The ferric salt is optimal. The amount of the flocculant added is usually about 500 to 10,000 mg / L, for example, about 1000 to 5000 mg / L in the case of 38 wt% ferric chloride.
[0026]
In this agglomeration treatment, it is preferable to add an anionic polymer flocculant together as an agglomeration aid, and the addition amount is preferably about 1 to 20 mg / L, particularly about 3 to 10 mg / L.
[0027]
Although there is no restriction | limiting in particular as a form of this agglomeration separation tank 5, Since the agglomeration component of a jellyfish is light and it is easy to float, the agglomeration separation tank by pressurization floating is suitable. However, a coagulation sedimentation tank may be used. The agglomerated sludge is mixed with the foam, or without being mixed, the aggregating agent is added alone, dehydrated, etc., and landfilled or incinerated. Preferably, the agglomerated sludge is mixed with the foam, and a flocculant is added for dehydration.
[0028]
The separated water in the flocculation / separation tank 5 is filtered by the filter 6 and then treated by the activated carbon tower 7 to remove COD, and the treated water is discharged.
[0029]
The separation water purification means may be any means that can remove COD in the coagulated separation water. In addition to the combination of the filter 6 and the activated carbon tower 7 as shown in FIG.
(1) After oxidation treatment, activated carbon treatment
(2) Biological treatment
(3) Oxidation treatment, membrane filtration treatment
(4) After membrane filtration treatment, an appropriate combination of COD oxidative decomposition, filtration, and adsorption treatment, such as oxidation treatment and then activated carbon treatment, can be employed.
[0030]
In the said embodiment, after adding a foam solidification agent, although the foam is isolate | separated with the separation tank 3, as FIG. 2 does not need to perform this foam separation. That is, after adding a foam solidification agent to the jellyfish crushed material-containing water, it may be sent to the coagulation separation tank 5 as it is (that is, without performing foam separation). The other processes in FIG. 2 are the same as those in FIG .
[0031]
【Example】
Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples.
[0032]
Example 1
The jellyfish was processed according to the flow shown in FIG.
[0033]
The jellyfish separated from the seawater was stored in the storage tank 1. In order to prevent the temperature in the storage tank 1 from rising, the seawater pumped from the sea was sprinkled from the
[0034]
The agglomerated separation sludge was mixed with the foam, 20 mg / L of the polymer flocculant was added, dewatered with a centrifugal dehydrator, the dehydrated cake was discarded, and the filtrate was mixed with the liquid.
[0035]
In this treatment, the COD concentration (COD Mn ) of the treated water before the aggregation separation treatment, after the aggregation separation treatment, and after the activated carbon treatment was as shown in Table 1.
[0036]
Comparative Example 1
In Example 1, jellyfish were treated in the same manner except that seawater was not sprinkled. As a result, the temperature of the storage tank 1 was 35 ° C. on average. The quality of each treated water was as shown in Table 1.
[0037]
Example 2
The jellyfish was processed according to the flow of FIG. This corresponds to the treatment in Example 1 where the potassium alum was added and no foam separation was performed. The point which sprinkled seawater in the storage tank 1 and set the water temperature of the storage tank 1 to 25 degreeC is the same as Example 1. FIG. The results are shown in Table 1.
[0038]
Comparative Example 2
The same operation as in Example 2 was performed except that seawater was not sprinkled into the storage tank 1, and the results are shown in Table 1. In addition, the water temperature of the storage tank 1 rose to an average of 35 ° C.
[0039]
[Table 1]
[0040]
As is clear from the comparison between Example 1 and Comparative Example 1 in Table 1 and the comparison between Example 2 and Comparative Example 2, by spraying seawater into the storage tank 1 to lower the water temperature, The COD concentration of water becomes low and the COD of final treated water also becomes low. This is presumed to be due to the suppression of solubilization by rot of jellyfish.
[0041]
In addition, as apparent from the comparison between Example 1 and Example 2, when potassium alum is added to separate the foam (Example 1), the COD concentration of water before flocculation and separation becomes low, and the final treated water is reduced. COD is also lowered. This tendency is also recognized from the comparison between Comparative Example 1 and Comparative Example 2.
[0042]
In Examples 1 and 2 and Comparative Examples 1 and 2, the storage tanks were observed daily to observe the cloudiness and odor. As a result, Examples 1 and 2 were more prone to decay than Comparative Examples 1 and 2. It was found to be very slow.
[0043]
【The invention's effect】
As described above in detail, according to the saddle down the processing apparatus and processing method of the present invention, saddle up corruption is suppressed in the reservoir, as a result, the water quality of the final treated water also becomes good.
[Brief description of the drawings]
FIG. 1 is a system diagram showing an embodiment of a jellyfish processing apparatus and processing method of the present invention.
FIG. 2 is a system diagram showing another embodiment of the jellyfish processing apparatus and processing method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Jellyfish storage tank 2 Jellyfish crushing means 3 Foam separation tank 4 Dehydrator 5 Coagulation separation tank 6 Filter 7
Claims (4)
この貯留槽から取り出されたくらげを破砕する手段と、
この破砕物含有水に泡沫固化剤を添加した後、凝集分離処理する手段とを有することを特徴とするくらげの処理装置。 A jellyfish storage tank equipped with temperature lowering means ;
Means for crushing the reservoir or al preparative Ride been jellyfish,
After addition of foam solidifying agent to the crushed containing water, processing device jellyfish characterized by a Turkey that having a means for coagulation and separation process.
該貯留槽に温度低下処理を施すことを特徴とするくらげの処理方法。Storing the jellyfish in the storage tank, taken out jellyfish from the reservoir, the addition of foam solidifying agent after crushing, a method of processing subsequent coagulation and separation processing jellyfish,
A method for treating a jellyfish , characterized by subjecting the storage tank to a temperature reduction treatment.
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