JPH07256271A - Treatment of waste fluid containing marine organisms - Google Patents
Treatment of waste fluid containing marine organismsInfo
- Publication number
- JPH07256271A JPH07256271A JP7984594A JP7984594A JPH07256271A JP H07256271 A JPH07256271 A JP H07256271A JP 7984594 A JP7984594 A JP 7984594A JP 7984594 A JP7984594 A JP 7984594A JP H07256271 A JPH07256271 A JP H07256271A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- waste fluid
- flocculant
- treatment
- coagulant
- 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
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば魚類、貝類、甲
殻類等の海洋生物を含む廃液の処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating waste liquid containing marine organisms such as fish, shellfish and crustaceans.
【０００２】[0002]
【従来の技術】例えば発電所では、冷却水として海水を
利用しており、海中に取水口を設けて海水を汲上げてい
る。しかし海水中には紫貝等の海洋生物が多量に存在し
ており、これらは取水口に付着しやすいため、そのまま
放置しておくと付着量が多くなり、海水の汲上げ効率が
悪化する。従って紫貝を取水口から定期的に掻き取るこ
とが必要であるが、掻き取った紫貝の量は膨大であり、
この紫貝の廃棄処理も必要となる。2. Description of the Related Art In a power plant, for example, seawater is used as cooling water, and an intake port is provided in the sea to pump seawater. However, a large amount of marine organisms such as purple shellfish exist in seawater, and these easily attach to the intake, so if left as they are, the amount of attachment will increase and the pumping efficiency of seawater will deteriorate. Therefore, it is necessary to periodically scrape the purple shellfish from the water mouth, but the amount of purple shellfish scraped is enormous,
It is also necessary to dispose of this purple shellfish.
【０００３】ここで下水やし尿等の廃水処理では、一般
的に高分子凝集剤を用いる方法が使用されている。この
方法では予め粒子の大きい固形成分等を除去した後、好
気性発酵や嫌気性発酵工程にて、原生動物によるタンパ
ク質成分の分解を行って粒子を小さくし、この後高分子
凝集剤を添加して残りの粒子を凝集させて沈降分離する
ことにより処理を行っている。Here, in the treatment of wastewater such as sewage and night urine, a method using a polymer flocculant is generally used. In this method, after removing solid components with large particles in advance, in the aerobic fermentation or anaerobic fermentation process, the protein components are decomposed by the protozoa to reduce the particles, and then a polymer flocculant is added. The remaining particles are aggregated and separated by sedimentation for treatment.
【０００４】そこで本発明者らは、紫貝を含む海水等か
らなる廃液の処理に、高分子凝集剤を用いる方法を適用
することを試みた。Therefore, the present inventors have tried to apply a method using a polymer flocculant to the treatment of a waste liquid such as seawater containing purple shellfish.
【０００５】[0005]
【発明が解決しようとしている課題】しかしながら、高
分子凝集剤で凝集し得る粒子の大きさは５０００オング
ストローム〜１ｍｍであるが、上記の廃液に含まれる、
紫貝の生身等のタンパク質の粒子の大きさにはばらつき
があって、高分子凝集剤の適用範囲外の大きさを有する
タンパク質粒子も多く存在する。従って上述の廃液処理
方法では、廃液中に含まれるタンパク質粒子の充分な凝
集は得られず、このためこれらを凝集させて除去するこ
とにより廃液を清浄化することは困難であった。However, the size of the particles which can be aggregated by the polymer aggregating agent is 5000 angstrom to 1 mm, and it is included in the above waste liquid.
The size of the protein particles of the fresh sea mussels and the like varies, and there are many protein particles having a size outside the applicable range of the polymer flocculant. Therefore, in the above-mentioned waste liquid treatment method, sufficient aggregation of the protein particles contained in the waste liquid cannot be obtained, and therefore it is difficult to clean the waste liquid by aggregating and removing them.
【０００６】本発明はこのような事情のもとになされた
ものであり、その目的は海洋生物の生身等の凝集作用を
高めることにより、廃液処理の処理効率の向上を図る海
洋生物を含む廃液の処理方法を提供することにある。The present invention has been made under the above circumstances, and its purpose is to enhance the aggregating action of living organisms of marine organisms, thereby improving the treatment efficiency of waste liquid treatment. Is to provide a processing method.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、海洋
生物を含む廃液に無機凝集剤を添加する工程と、この廃
液に高分子凝集剤を添加し、凝集体を形成させる工程
と、当該凝集体を前記廃液から分離させる工程と、から
なることを特徴とする。According to the invention of claim 1, a step of adding an inorganic coagulant to a waste liquid containing marine organisms, a step of adding a polymer coagulant to the waste liquid to form an aggregate, And a step of separating the aggregate from the waste liquid.
【０００８】請求項２の発明は、請求項１に記載の発明
において、海洋生物を含む廃液に無機凝集剤を添加し
て、廃液のｐＨを６．５以下に調整することを特徴とす
る。The invention of claim 2 is characterized in that, in the invention of claim 1, the pH of the waste liquid is adjusted to 6.5 or less by adding an inorganic coagulant to the waste liquid containing marine organisms.
【０００９】[0009]
【作用】海洋生物例えば紫貝を含む廃液には、粒子の大
きさが広範囲に及ぶタンパク質粒子が含まれており、こ
の粒子の表面は負に帯電していて互いに反発しあい凝集
を阻害している。ここに無機凝集剤を添加すると、無機
凝集剤は水中で加水分解されて正の電荷を有する金属イ
オンを生じるので、これによりタンパク質粒子の表面電
荷が中和され、凝集を阻害する力が弱められる。従って
このように凝集体が形成されやすい状態の廃液に高分子
凝集剤を添加すると十分な凝集体が形成されるので、廃
液処理を効率よく行うことができる。[Operation] Marine effluents such as purple shellfish contain protein particles having a wide range of particle sizes, and the surfaces of these particles are negatively charged and repel each other to inhibit aggregation. . When an inorganic coagulant is added to the inorganic coagulant, the inorganic coagulant is hydrolyzed in water to generate a positively charged metal ion, which neutralizes the surface charge of protein particles and weakens the ability to inhibit aggregation. . Therefore, when the polymer flocculant is added to the waste liquid in which the aggregates are easily formed in this manner, sufficient aggregates are formed, so that the waste liquid treatment can be efficiently performed.
【００１０】また無機凝集剤により廃液のｐＨを６．５
以下に調整すると、大きさの異なるタンパク質粒子の表
面電荷も十分に中和されるので、さらに凝集体が形成さ
れやすくなる。Further, the pH of the waste liquid is adjusted to 6.5 by the inorganic coagulant.
When adjusted below, the surface charges of protein particles of different sizes are also sufficiently neutralized, so that aggregates are more likely to be formed.
【００１１】[0011]
【実施例】以下本発明の実施例について説明する。図１
は本発明の方法を実施するための廃液処理装置の一例を
示す図である。図１中は海洋生物を含む廃液を貯留する
ための廃液貯留槽であり、この廃液貯留槽１は途中にバ
ルブ１２、ポンプ１３、バルブ１４が設けられた供給管
１１を介して、撹拌機２１が備えられた無機凝集剤混合
槽２に接続されている。EXAMPLES Examples of the present invention will be described below. Figure 1
FIG. 1 is a diagram showing an example of a waste liquid treatment apparatus for carrying out the method of the present invention. FIG. 1 shows a waste liquid storage tank for storing a waste liquid containing marine organisms. The waste liquid storage tank 1 has a stirrer 21 through a supply pipe 11 provided with a valve 12, a pump 13 and a valve 14 in the middle thereof. It is connected to the inorganic coagulant mixing tank 2 provided with.
【００１２】無機凝集剤混合槽２は廃液に無機凝集剤を
添加して廃液のｐＨを調整するための槽であって、この
槽には、定量ポンプ３２、バルブ３３を備えた供給管３
１を介して無機凝集剤槽３が設けられていると共に、供
給管２２を介して撹拌機４１が備えられた高分子凝集剤
槽４が接続されている。高分子混合槽４はｐＨ調整後の
廃液に高分子凝集剤を添加して凝集体を形成させるため
の槽であり、この槽には、定量ポンプ５２を備えた供給
管５１を介して高分子凝集剤槽５が設けられていると共
に、供給管４２を介して固液分離装置６が接続されてい
る。The inorganic coagulant mixing tank 2 is a tank for adjusting the pH of the waste liquid by adding the inorganic coagulant to the waste liquid, and in this tank, a supply pipe 3 equipped with a metering pump 32 and a valve 33.
1, the inorganic coagulant tank 3 is provided, and the polymer coagulant tank 4 provided with the stirrer 41 is connected via the supply pipe 22. The polymer mixing tank 4 is a tank for adding a polymer coagulant to the waste liquid after pH adjustment to form an aggregate, and in this tank, a polymer is supplied via a supply pipe 51 equipped with a metering pump 52. A flocculant tank 5 is provided, and a solid-liquid separation device 6 is connected via a supply pipe 42.
【００１３】固液分離装置６は凝集体を分離するための
装置であり、例えば遠心分離型や炉布分離型等の装置を
用いることができる。この固液分離装置６は供給管６１
を介して、廃液処理後の液に放流するための最終処理を
行うための槽であるｐＨ調整槽７に接続されており、こ
のｐＨ調整槽７にはアルカリ液貯槽８がバルブ８２、供
給管８１を介して設けられている。The solid-liquid separation device 6 is a device for separating aggregates, and for example, a centrifugal separation type device or a furnace cloth separation type device can be used. The solid-liquid separation device 6 has a supply pipe 61.
Is connected to a pH adjusting tank 7 which is a tank for performing a final treatment for discharging into the liquid after the waste liquid treatment. In the pH adjusting tank 7, an alkaline liquid storage tank 8 is provided with a valve 82 and a supply pipe. It is provided via 81.
【００１４】前記の廃液貯留槽１には、廃液のレベルを
計測するためのレベル計９１が設けられると共に、この
レベル計９１とポンプ１３とはレベルコントロ−ラ９２
を介して電気的に接続されている。また前記の無機凝集
剤混合槽２には廃液のｐＨを測定するためのｐＨ計９３
が設けられると共に、このｐＨ計９３と定量ポンプ３２
とはｐＨコントロ−ラ９４を介して電気的に接続されて
いる。更にｐＨ調整槽７にもｐＨ計９５が設けられてお
り、このｐＨ計９５はバルブ８２と電気的に接続されて
いる。The waste liquid storage tank 1 is provided with a level meter 91 for measuring the level of the waste liquid, and the level meter 91 and the pump 13 are provided with a level controller 92.
Are electrically connected via. The inorganic flocculant mixing tank 2 has a pH meter 93 for measuring the pH of the waste liquid.
Is provided, and the pH meter 93 and the metering pump 32 are provided.
Are electrically connected to each other via a pH controller 94. The pH adjusting tank 7 is also provided with a pH meter 95, and the pH meter 95 is electrically connected to the valve 82.
【００１５】次に上述の廃液処理装置を用いて行われる
本発明方法の一例について述べる。廃液貯留槽１には、
例えば紫貝を含む廃液が貯留されており、この廃液は供
給管１１を介して無機凝集剤混合槽２へ供給される。こ
のとき廃液貯留槽１ではレベル計９１により槽内の廃液
のレベルが計測され、この値はレベルコントロ−ラ９２
に出力される。そして廃液が設定範囲のレベルより低く
なるとレベルコントロ−ラ９２よりポンプ１３へ停止信
号が出力されて、無機凝集剤混合槽２への廃液の供給が
停止される。なおここで紫貝を含む廃液とは、紫貝やフ
ジツボ等の貝類の剥身や貝殻、これらに付着している海
水や雨水、土砂などを含む廃液をいう。Next, an example of the method of the present invention carried out using the above-mentioned waste liquid treatment apparatus will be described. In the waste liquid storage tank 1,
A waste liquid containing, for example, purple shellfish is stored, and this waste liquid is supplied to the inorganic coagulant mixing tank 2 via the supply pipe 11. At this time, in the waste liquid storage tank 1, the level of the waste liquid in the tank is measured by the level meter 91, and this value is measured by the level controller 92.
Is output to. Then, when the waste liquid becomes lower than the level of the set range, the level controller 92 outputs a stop signal to the pump 13 to stop the supply of the waste liquid to the inorganic coagulant mixing tank 2. Here, the waste liquid containing purple shellfish refers to a waste liquid containing the shells and shells of shellfish such as purple shellfish and barnacles, and seawater, rainwater, earth and sand adhering to these.
【００１６】無機凝集剤混合槽２では、無機凝集剤槽３
より供給管３１を介して例えば塩化第二鉄溶液からなる
無機凝集剤が供給されるが、この際ｐＨ計９３より廃液
のｐＨが測定され、この値はｐＨコントロ−ラ９４に出
力される。そして廃液のｐＨが一定値例えば６．５以下
になるとｐＨコントロ−ラ９４より定量ポンプ３２へ停
止信号が出力されて無機凝集剤の供給が停止される。こ
こで無機凝集剤としては、塩化第二鉄溶液以外に、硫酸
バンド、硫酸アルミニウム、硫酸アルミニウムの有水
塩、ポリ塩化アルミニウム、塩化第一鉄、硫酸第一鉄、
硫酸第二鉄等の溶液や、これらを主成分とする溶液、こ
れらの混合溶液等を用いることができる。In the inorganic coagulant mixing tank 2, the inorganic coagulant tank 3 is used.
An inorganic coagulant composed of, for example, ferric chloride solution is supplied from the supply pipe 31. At this time, the pH of the waste liquid is measured by the pH meter 93, and this value is output to the pH controller 94. When the pH of the waste liquid reaches a certain value, for example, 6.5 or less, a stop signal is output from the pH controller 94 to the metering pump 32, and the supply of the inorganic coagulant is stopped. Here, as the inorganic coagulant, other than ferric chloride solution, sulfuric acid band, aluminum sulfate, hydrated salts of aluminum sulfate, polyaluminum chloride, ferrous chloride, ferrous sulfate,
A solution of ferric sulfate or the like, a solution containing them as a main component, a mixed solution thereof, or the like can be used.
【００１７】無機凝集剤混合槽２にてｐＨが調整された
廃液は供給管２２を介して高分子凝集剤混合槽４に供給
され、ここでは、高分子凝集剤槽５より定量ポンプ５
２、供給管５１を介して高分子凝集剤が連続的に添加さ
れて凝集体が形成される。高分子凝集剤としては例えば
アクリル系高分子凝集剤でカチオン系のもの、アクリル
系高分子凝集剤でアニオン系のもの、あるいはカチオン
系とアニオン系を併用したものや両性のものを用いるこ
とができ、またアクリル系高分子凝集剤以外にキトサン
系高分子凝集剤やアルギン酸系高分子凝集剤等を用いる
ことができる。これらの高分子凝集剤は一般に固体状で
あり、例えば水等に溶解して液体状にし、高分子凝集剤
槽５に貯留される。The waste liquid, the pH of which has been adjusted in the inorganic coagulant mixing tank 2, is supplied to the polymer coagulant mixing tank 4 via the supply pipe 22, and here, the polymer coagulant tank 5 is used to supply the constant amount pump 5.
2. The polymer coagulant is continuously added through the supply pipe 51 to form an aggregate. As the polymer coagulant, for example, an acrylic polymer coagulant that is a cation type, an acrylic polymer coagulant that is an anionic type, or a combination of a cation type and an anion type or an amphoteric type can be used. In addition to the acrylic polymer coagulant, a chitosan polymer coagulant, an alginic acid polymer coagulant, or the like can be used. These polymer coagulants are generally in a solid state, for example, dissolved in water or the like to form a liquid and stored in the polymer coagulant tank 5.
【００１８】高分子凝集剤混合槽４にて凝集体を形成さ
せた後、廃液は供給管４２を介して固液分離装置６へ送
液され、凝集体が分離される。次いで凝集体を分離した
後の処理後液は供給管６１を介してｐＨ調製槽７へ送液
され、この槽内にてｐＨ計９５より処理後液のｐＨが測
定される。そしてこの測定値に応じてバルブ８２が開閉
し、アルカリ液貯槽８から供給管８１を介して、ｐＨ調
製槽７に例えば苛性ソ−ダ溶液や水酸化カルシウム溶液
等からなるアルカリ液が供給されて、処理後液のｐＨが
放流規制の範囲内の値となるように調整され、この後ろ
過工程を経て、放流される。なおＣＯＤ対策やＢＯＤ対
策のため、ろ過工程の後、活性炭により吸着処理を行っ
てもよく、また終末処理場を経て公共用水域に放流して
もよい。一方分離された凝集体は、乾燥後焼却されるか
または土壌に埋めて廃棄されたり、コンポスト化、飼料
化される。After forming aggregates in the polymer coagulant mixing tank 4, the waste liquid is sent to the solid-liquid separation device 6 through the supply pipe 42, and the aggregates are separated. Next, the post-treatment liquid after separating the aggregates is sent to the pH adjusting tank 7 through the supply pipe 61, and the pH of the post-treatment liquid is measured by the pH meter 95 in this tank. Then, the valve 82 is opened and closed according to the measured value, and the alkaline solution such as caustic soda solution or calcium hydroxide solution is supplied from the alkaline solution storage tank 8 to the pH adjusting tank 7 through the supply pipe 81. The pH of the post-treatment liquid is adjusted to a value within the range of the discharge regulation, and the liquid is discharged after the filtration step. For COD countermeasures and BOD countermeasures, adsorption treatment may be performed with activated carbon after the filtration step, or the water may be discharged to the public water area through the terminal treatment plant. On the other hand, the separated agglomerates are incinerated after drying, or buried in soil for disposal, composting or feed.
【００１９】次に各混合槽２、４内にて行なわれる凝集
作用について説明する。紫貝を含む廃液には、紫貝の生
身等のタンパク質粒子が存在するが、このタンパク質粒
子の表面は負に帯電しており、粒子は互いに反発しあっ
て凝集を阻害している。また廃液中に含まれるタンパク
質粒子の大きさは数十オングストローム〜数十ｍｍと広
範囲に及んでおり、高分子凝集剤で凝集し得る粒子の大
きさの範囲を超えているので、高分子凝集剤のみでは廃
液に含まれるタンパク質粒子を十分に凝集させることは
できない。Next, the aggregating action performed in each of the mixing tanks 2 and 4 will be described. In the waste liquid containing the pearl oysters, protein particles such as the flesh of the pearl oysters are present, but the surfaces of the protein particles are negatively charged, and the particles repel each other to inhibit aggregation. In addition, the size of the protein particles contained in the waste liquid is as wide as several tens of angstroms to several tens of millimeters, which exceeds the size of the particles that can be aggregated by the polymer coagulant. The protein particles contained in the waste liquid cannot be sufficiently aggregated by themselves.
【００２０】しかしながら廃液に高分子凝集剤を添加す
る前に無機凝集剤を添加すると、無機凝集剤は水中で加
水分解されて正電荷を有する金属イオンを生じるので、
これによりタンパク質粒子の負の表面電荷が中和され、
凝集を阻害する力が弱められる。However, if the inorganic coagulant is added before adding the polymer coagulant to the waste liquid, the inorganic coagulant is hydrolyzed in water to generate a metal ion having a positive charge.
This neutralizes the negative surface charge of protein particles,
The ability to prevent aggregation is weakened.
【００２１】またタンパク質の大粒子と微小粒子との間
では、粒子の大きさの違いにより表面電荷が異なるが、
無機凝集剤を添加して廃液のｐＨを６．５以下となるよ
うに調整すると、大粒子の表面電荷も微粒子の表面電荷
も夫々中和される。従って凝集を阻害する力が緩和さ
れ、高分子凝集剤により凝集体が形成されやすくなる。In addition, although the surface charge differs between large and minute particles of protein due to the difference in particle size,
When the pH of the waste liquid is adjusted to 6.5 or less by adding the inorganic coagulant, both the surface charge of the large particles and the surface charge of the particles are neutralized. Therefore, the force that inhibits aggregation is alleviated, and the polymer coagulant facilitates the formation of aggregates.
【００２２】さらに無機凝集剤は、高分子凝集剤では凝
集効果の乏しい例えば０．１μｍ以下のコロイド領域の
微小粒子を結合させることができるので、この粒子間の
結合により微小粒子を高分子凝集剤で凝集し得る大きさ
まで肥大化させると共に、一方タンパク質の巨大粒子に
対しては粒子の内外表面に有する負電荷を中和させるだ
けで高分子凝集剤が作用することができる。Further, since the inorganic coagulant can bind the microparticles in the colloidal region of, for example, 0.1 μm or less, which has a poor cohesive effect with the polymer coagulant, the microparticles are bonded to each other by the cohesion between the particles. The macromolecular flocculant can act on the large particles of the protein by neutralizing the negative charges on the inner and outer surfaces of the particles while enlarging the particles to a size at which they can aggregate.
【００２３】従って無機凝集剤混合槽２にて、廃液に予
め無機凝集剤を添加して廃液のｐＨを調整し、タンパク
質粒子表面の負電荷を中和して凝集を阻害する力を弱め
ると共に、微小粒子の肥大化、巨大粒子の内外表面の負
電荷の中和を図ることにより、高分子凝集剤によるタン
パク質粒子の凝集が起こりやすい状態に調整した後に、
高分子凝集剤混合槽４にて高分子凝集剤を添加すると、
高分子凝集剤による凝集処理が活性化され、廃液中に含
まれるタンパク質粒子の大きさが広範囲に渡る紫貝を含
む廃液においても凝集体を形成することができる。Therefore, in the inorganic flocculant mixing tank 2, an inorganic flocculant is added to the waste liquid in advance to adjust the pH of the waste liquid to weaken the ability to inhibit aggregation by neutralizing the negative charges on the surface of the protein particles. After adjusting to a state in which the aggregation of protein particles by the polymer aggregating agent is likely to occur by enlarging the microparticles and neutralizing the negative charge on the inner and outer surfaces of the giant particles,
When the polymer coagulant is added in the polymer coagulant mixing tank 4,
The aggregation treatment with the polymer aggregating agent is activated, and aggregates can be formed even in a waste liquid containing purple shellfish in which the size of the protein particles contained in the waste liquid has a wide range.
【００２４】なお高分子凝集体を添加せずに無機凝集剤
のみで凝集処理を行った場合は、凝集力が弱いため凝集
体を形成できず、廃液を処理することは困難である。ま
た高分子凝集剤を無機凝集剤より先に廃液に添加した場
合は、タンパク質粒子の表面に高分子凝集剤が付着し、
この後に無機凝集剤を添加しても、無機凝集剤は高分子
凝集剤に阻まれてタンパク質粒子表面を中和することが
できないため、凝集体を形成することは困難である。When the aggregating treatment is performed only with the inorganic aggregating agent without adding the polymer agglomerates, the agglomerates cannot be formed because the aggregating force is weak and it is difficult to treat the waste liquid. Also, when the polymer flocculant is added to the waste liquid before the inorganic flocculant, the polymer flocculant adheres to the surface of the protein particles,
Even if the inorganic coagulant is added after this, the inorganic coagulant is blocked by the polymer coagulant and cannot neutralize the surface of the protein particles, so that it is difficult to form an aggregate.
【００２５】次に本発明の方法の効果を確認するために
行った実験とその結果について説明する。濁度５００ｐ
ｐｍ、ｐＨ７．９の紫貝を含む廃液に、塩化第二鉄から
なる無機凝集剤を廃液のｐＨが６．０となるまで添加し
た後、商品名ツルフロック（鶴見曹達株式会社製）、商
品名ＭＨ−０９１０（鶴見曹達株式会社製）からなる低
カチオンの高分子凝集剤を６８ｐｐｍ添加した。次いで
この廃液を回転数２００ｒｐｍで６０分間攪拌し、その
後廃液の濁度をポ−タブル濁度計ＰＣ−０６ PORTABLE
COLORIMETER （京都電子工業株式会社製）を用いて測定
した。また無機凝集剤を硫酸バンド、ポリ塩化アルミニ
ウムに変えて同様の実験を行った。Next, an experiment conducted to confirm the effect of the method of the present invention and its result will be described. Turbidity 500p
After adding an inorganic coagulant composed of ferric chloride to a waste liquid containing pm and pH 7.9 of purple shellfish until the pH of the waste liquid reaches 6.0, the product name is Tsurflok (Tsurumi Soda Co., Ltd.), product name A low-cationic polymer flocculant consisting of MH-0910 (Tsurumi Soda Co., Ltd.) was added at 68 ppm. Then, the waste liquid was stirred at a rotation speed of 200 rpm for 60 minutes, and then the turbidity of the waste liquid was measured by a portable turbidimeter PC-06 PORTABLE.
It measured using COLORIMETER (made by Kyoto Electronics Manufacturing Co., Ltd.). Further, the same experiment was conducted by changing the inorganic coagulant to a sulfuric acid band or polyaluminum chloride.
【００２６】なお比較実験として無機凝集剤の代わりに
硫酸を添加して廃液のｐＨを６．０に調整した場合（比
較例１）、無機凝集剤を添加せず、商品名ツルフロック
（鶴見曹達株式会社製）、商品名Ｍ−０９０２（鶴見曹
達株式会社製）からなる中カチオンの高分子凝集剤と上
述のＭＨ−０９１０とをそれぞれ６８ｐｐｍずつ添加し
た場合（比較例２）についても同様の実験を行った。As a comparative experiment, when sulfuric acid was added in place of the inorganic flocculant to adjust the pH of the waste liquid to 6.0 (Comparative Example 1), the inorganic flocculant was not added, and the trade name Tsurfluc (Tsurumi Soda Co., Ltd.) was used. The same experiment was performed in the case of adding 68 ppm each of the medium cation polymer flocculant consisting of the company) and the trade name M-0902 (Tsurumi Soda Co., Ltd.) and the above-mentioned MH-0910 (Comparative Example 2). went.
【００２７】この結果を表１に示す。表１より、無機凝
集剤を添加せず高分子凝集剤のみを添加した場合（比較
例２）は処理後の廃液の濁度が７５ｐｐｍであるのに対
して、無機凝集剤として塩化第二鉄、硫酸バンド、ポリ
塩化アルミニウムを添加した場合は廃液の濁度が０ｐｐ
ｍであったことから、廃液のｐＨを無機凝集剤により調
整した後高分子凝集剤を添加することにより、紫貝を含
む廃液を清浄化できることが確認された。The results are shown in Table 1. From Table 1, when only the polymer flocculant was added without adding the inorganic flocculant (Comparative Example 2), the turbidity of the waste liquid after the treatment was 75 ppm, while the ferric chloride as the inorganic flocculant was used. , Sulfuric acid band, and polyaluminum chloride added, the turbidity of waste liquid is 0pp
Since it was m, it was confirmed that the waste liquid containing purple shellfish can be cleaned by adding the polymer coagulant after adjusting the pH of the waste liquid with the inorganic coagulant.
【００２８】[0028]
【表１】 また無機凝集剤の代わりに硫酸により廃液のｐＨを調整
した場合（比較例１）は、処理後の廃液の濁度は２５ｐ
ｐｍであったことから、無機凝集剤によってタンパク質
粒子の表面の負電荷が中和されると共に、無機凝集剤で
結合し得る微粒子を結合させて、廃液を高分子凝集剤に
より凝集されやすい状態に調整していることが確認され
た。[Table 1] When the pH of the waste liquid was adjusted with sulfuric acid instead of the inorganic coagulant (Comparative Example 1), the turbidity of the waste liquid after the treatment was 25 p.
Since it was pm, the negative charge on the surface of the protein particles is neutralized by the inorganic coagulant, and the fine particles that can be bonded by the inorganic coagulant are bonded to make the waste liquid easily aggregated by the polymer coagulant. It was confirmed that adjustments were made.
【００２９】なお以上において本発明は、紫貝を含む廃
液以外に、ミドイガイ、フジツボ、エビ、カニ、シャコ
等の貝類、甲殻類、魚類を含む廃液の廃液処理に適用で
きる。In addition to the waste liquor containing purple shellfish, the present invention can be applied to waste liquor treatment of waste liquor containing shellfish such as mussel, barnacle, shrimp, crab, and shrimp, shellfish, and fish.
【００３０】[0030]
【発明の効果】請求項１の発明によれば、海洋生物を含
む廃液に無機凝集剤を添加して、高分子凝集剤による凝
集処理を活性化するように廃液を調整した後、高分子凝
集剤を添加して凝集処理を行っているので、タンパク質
粒子の大きさが広範囲に及ぶ廃液においても、充分な凝
集体を形成することができ、廃液処理の処理効率を向上
させることができる。According to the first aspect of the present invention, an inorganic coagulant is added to a waste liquid containing marine organisms, the waste liquid is adjusted so as to activate the coagulation treatment by the polymer coagulant, and then the polymer coagulation is carried out. Since the coagulation treatment is performed by adding the agent, it is possible to form a sufficient aggregate even in the waste liquid having a wide range of protein particle sizes, and it is possible to improve the treatment efficiency of the waste liquid treatment.
【００３１】また請求項２の発明によれば無機凝集剤で
廃液のｐＨを６．５以下に調整しているので、粒子の大
きさが異なるタンパク質の表面電荷が中和され、さらに
凝集体が形成されやすくなる。According to the second aspect of the present invention, since the pH of the waste liquid is adjusted to 6.5 or less with the inorganic coagulant, the surface charges of the proteins having different particle sizes are neutralized, and further the aggregates are formed. It is easily formed.
【図１】本発明方法を実施するための廃液処理装置の一
例を示す構成図である。FIG. 1 is a configuration diagram showing an example of a waste liquid treatment apparatus for carrying out the method of the present invention.
１ 廃液貯留槽 ２ 無機凝集剤混合槽 ３ 無機凝集剤槽 ４ 高分子凝集剤混合槽 ５ 高分子凝集剤槽 ６ 固液分離装置 ７ ｐＨ調製槽 1 Waste Liquid Storage Tank 2 Inorganic Flocculant Mixing Tank 3 Inorganic Flocculant Mixing Tank 4 Polymer Flocculant Mixing Tank 5 Polymer Flocculant Tank 6 Solid-Liquid Separator 7 pH Adjusting Tank
Claims (2)
する工程と、 この廃液に高分子凝集剤を添加し、凝集体を形成させる
工程と、 当該凝集体を前記廃液から分離させる工程と、 からなることを特徴とする海洋生物を含む廃液の処理方
法。1. A step of adding an inorganic coagulant to a waste liquid containing marine organisms, a step of adding a polymer coagulant to the waste liquid to form an aggregate, and a step of separating the aggregate from the waste liquid. A method for treating waste liquid containing marine organisms, which comprises:
して、廃液のｐＨを６．５以下に調整することを特徴と
する請求項１記載の海洋生物を含む廃液の処理方法。2. The method for treating a waste liquid containing marine organisms according to claim 1, wherein the pH of the waste liquid is adjusted to 6.5 or less by adding an inorganic coagulant to the waste liquid containing marine organisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7984594A JPH07256271A (en) | 1994-03-25 | 1994-03-25 | Treatment of waste fluid containing marine organisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7984594A JPH07256271A (en) | 1994-03-25 | 1994-03-25 | Treatment of waste fluid containing marine organisms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07256271A true JPH07256271A (en) | 1995-10-09 |
Family
ID=13701544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7984594A Pending JPH07256271A (en) | 1994-03-25 | 1994-03-25 | Treatment of waste fluid containing marine organisms |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07256271A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010194520A (en) * | 2009-02-27 | 2010-09-09 | Tosoh Corp | Salt water refining method |
| JP2011088051A (en) * | 2009-10-21 | 2011-05-06 | Ihi Corp | Waste liquid treatment equipment and waste liquid treatment method |
-
1994
- 1994-03-25 JP JP7984594A patent/JPH07256271A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010194520A (en) * | 2009-02-27 | 2010-09-09 | Tosoh Corp | Salt water refining method |
| JP2011088051A (en) * | 2009-10-21 | 2011-05-06 | Ihi Corp | Waste liquid treatment equipment and waste liquid treatment method |
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