JPH0440287A - Treatment of sludge water formed in breeding fishing ground - Google Patents
Treatment of sludge water formed in breeding fishing groundInfo
- Publication number
- JPH0440287A JPH0440287A JP2148170A JP14817090A JPH0440287A JP H0440287 A JPH0440287 A JP H0440287A JP 2148170 A JP2148170 A JP 2148170A JP 14817090 A JP14817090 A JP 14817090A JP H0440287 A JPH0440287 A JP H0440287A
- Authority
- JP
- Japan
- Prior art keywords
- water
- sludge
- sludge water
- sodium alginate
- calcium
- 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 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 238000009395 breeding Methods 0.000 title abstract 3
- 230000001488 breeding effect Effects 0.000 title abstract 3
- 229940043430 calcium compound Drugs 0.000 claims abstract description 25
- 150000001674 calcium compounds Chemical class 0.000 claims abstract description 25
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 19
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 19
- 239000000661 sodium alginate Substances 0.000 claims abstract description 19
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 19
- 239000002253 acid Substances 0.000 claims abstract description 5
- 239000008346 aqueous phase Substances 0.000 claims abstract description 4
- 238000009360 aquaculture Methods 0.000 claims description 29
- 244000144974 aquaculture Species 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 17
- 239000002245 particle Substances 0.000 abstract description 30
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 12
- 239000000292 calcium oxide Substances 0.000 abstract description 6
- 235000012255 calcium oxide Nutrition 0.000 abstract description 6
- 239000000920 calcium hydroxide Substances 0.000 abstract description 4
- 235000011116 calcium hydroxide Nutrition 0.000 abstract description 4
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 abstract description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract description 3
- 235000011148 calcium chloride Nutrition 0.000 abstract description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 3
- -1 calcium halide Chemical class 0.000 abstract description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 3
- UNMYWSMUMWPJLR-UHFFFAOYSA-L Calcium iodide Chemical compound [Ca+2].[I-].[I-] UNMYWSMUMWPJLR-UHFFFAOYSA-L 0.000 abstract description 2
- 239000011575 calcium Substances 0.000 abstract description 2
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 abstract description 2
- 239000001639 calcium acetate Substances 0.000 abstract description 2
- 235000011092 calcium acetate Nutrition 0.000 abstract description 2
- 229960005147 calcium acetate Drugs 0.000 abstract description 2
- 229910001622 calcium bromide Inorganic materials 0.000 abstract description 2
- 239000001110 calcium chloride Substances 0.000 abstract description 2
- 229910001628 calcium chloride Inorganic materials 0.000 abstract description 2
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 abstract description 2
- 229940046413 calcium iodide Drugs 0.000 abstract description 2
- 229910001640 calcium iodide Inorganic materials 0.000 abstract description 2
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 19
- 239000010419 fine particle Substances 0.000 description 18
- 239000006228 supernatant Substances 0.000 description 10
- 241000251468 Actinopterygii Species 0.000 description 7
- 235000019688 fish Nutrition 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 241000972773 Aulopiformes Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 229940072056 alginate Drugs 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 235000010410 calcium alginate Nutrition 0.000 description 1
- 239000000648 calcium alginate Substances 0.000 description 1
- 229960002681 calcium alginate Drugs 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 235000019515 salmon Nutrition 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
Landscapes
- Farming Of Fish And Shellfish (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
発明の技術分野
本発明は、養殖漁場に堆積した汚泥の処理方法に関し、
さらに詳しくは養殖漁場に堆積した汚泥粒子の内でも特
に沈降分離処理が難しいとされている攪乱により懸濁化
し易い微粒子群を含む汚泥粒子群を凝集固化して水と分
離処理を行ない、これにより養殖漁場の水を浄化する方
法に関する。[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a method for treating sludge accumulated in an aquaculture fishing ground.
More specifically, among the sludge particles accumulated in aquaculture fishing grounds, sludge particles, including fine particles that are easily suspended due to disturbance, which are said to be particularly difficult to settle and separate, are coagulated and solidified and separated from water. Concerning methods for purifying water in aquaculture and fishing grounds.
発明の技術的背景ならびにその問題点
養殖漁場においては、養殖魚類に投与した過剰の餌や魚
類か排泄した糞、あるいは稚魚の死骸等か海底・湖底・
川床に堆積し、さらにはこれ等の各種有機物か腐敗して
汚泥粒子群を形成している。Technical background of the invention and its problems In aquaculture fishing areas, excessive feed given to farmed fish, feces excreted by fish, carcasses of young fish, etc.
These various organic substances are deposited on riverbeds and further decomposed to form sludge particles.
この汚泥粒子群は養殖漁場を泳き回る養殖魚類の動き、
海流、水流等により攪乱され、その一部か微粒子群とな
って水中に懸濁した状態で存在している。そしてこの内
の各種有機物の腐敗微粒子群や腐敗の過程で生じるメタ
ンガス等の有機ガス、溶存酸素の消耗等を原因として養
殖魚類か発病したり死滅したりするなどの養殖業者にと
って致命的な被害か生したり、あるいは水質か低下して
独特の悪臭を放つようになるなとの養殖漁場の環境悪化
が進行し、大きな問題となっている。This sludge particle group reflects the movement of farmed fish swimming around the aquaculture fishing grounds.
Disturbed by ocean currents, water currents, etc., some of them exist in the form of fine particles suspended in water. Among these, it is possible that the aquaculture fish may become ill or die due to the decomposition of various organic particles, organic gas such as methane gas generated during the decomposition process, and the depletion of dissolved oxygen, which can be fatal to aquaculture farmers. The deterioration of the environment in aquaculture areas has become a major problem, with the problem of growing fish being left unfinished or the quality of the water declining and emitting a unique odor.
また、この養殖漁場の水中に懸濁する微粒子群は、これ
を含む水を汲み上げて容器内に採取し、１２時間放置し
ても透明な上澄液を得ることかてきない。さらに無機お
よび／または有機の１種または２種以上の従来使用され
ている凝集剤、例えば蛋白質を凝集させることで知られ
ているポリアクリル酸ナトリウム、あるいは大雨による
河川の濁りを除去するために必要に応じて硫酸パン土と
併用されるアルギン酸ナトリウム等を添加しても一旦撹
乱により水中に懸濁化した微粒子群は水中に懸濁した状
態で残存し、充分に凝集分離して除去することができな
いのが現状である。Furthermore, it is not possible to obtain a clear supernatant liquid from the fine particles suspended in the water of this aquaculture fishing ground even if the water containing the particles is pumped up, collected in a container, and left for 12 hours. In addition, one or more conventionally used flocculants, inorganic and/or organic, such as sodium polyacrylate, which is known to flocculate proteins, or necessary to remove turbidity in rivers caused by heavy rains, are added. Even if sodium alginate, etc., which is used in combination with sulfuric acid bread soil, is added depending on the situation, fine particles that have been suspended in water due to disturbance will remain suspended in water and cannot be removed by sufficient coagulation and separation. The current situation is that this is not possible.
これに対し、本発明者等はこのような微粒子群が懸濁化
した水中に水溶性カルシウム化合物を添加すると、懸濁
化した微粒子群が短時間の内に凝集分離することを見出
し、本発明に先立ち、養殖漁場から採取した汚泥水に水
溶性カルシウム化合物を添加することを特徴とする養殖
漁場に形成された汚泥水の処理方法を出願している。In contrast, the present inventors have discovered that when a water-soluble calcium compound is added to water in which such fine particles are suspended, the suspended fine particles coagulate and separate within a short period of time. Prior to this, an application has been filed for a method for treating sludge water collected from aquaculture and fishing grounds, which is characterized by adding a water-soluble calcium compound to the sludge water collected from the aquaculture and fishing grounds.
まお、ここでいう汚泥水とは上述したような養殖魚類の
餌、糞およびこれ等が腐敗したものなどの有機物を主体
とする汚泥粒子群を含む汚水を意味する。By the way, sludge water here refers to sewage containing sludge particles mainly composed of organic matter such as food, feces, and rotten materials of farmed fish as mentioned above.
しかしながら、この汚泥水の処理方法では上記微粒子を
含む汚泥粒子群を水と分離することができるものの、水
と分離した汚泥粒子群か充分に固化することができず、
このため水と分離した後の汚泥粒子群の処理に難点があ
った。However, although this sludge water treatment method can separate the sludge particles containing the fine particles from water, the sludge particles separated from water cannot be sufficiently solidified.
For this reason, there was a difficulty in processing the sludge particles after separation from water.
発明の目的
本発明は、上記のような従来技術に伴なう問題点を解決
しようとするものであって、水溶性カルシウム化合物を
添加することにより水と分離した後の養殖漁場に形成さ
れた汚泥水の処理を容易にすることを目的とする。Purpose of the Invention The present invention aims to solve the problems associated with the prior art as described above. The purpose is to facilitate the treatment of sludge water.
発明の概要
本発明の養殖漁場に形成され汚泥水の処理方法は、養殖
漁場から採取した汚泥水にアルギン酸ナトリウムを添加
し、次いで水溶性カルシウム化合物を添加することを特
徴としている。Summary of the Invention The method for treating sludge water formed in an aquaculture fishing ground according to the present invention is characterized in that sodium alginate is added to the sludge water collected from the aquaculture fishing ground, and then a water-soluble calcium compound is added thereto.
そして、このようにすることにより、水溶性カルシウム
化合物が汚泥水中で溶解してイオン化し、この過程にお
いて生じたＣａ＋＋か撹乱により懸濁化し易い比重の軽
い微粒子群を凝集して撹乱しても懸濁化し難い粗大粒子
に変えるとともに凝集粒子の比重を大きくし、水溶性カ
ルシウム化合物が溶解した汚泥水中でアルギン酸ナトリ
ウムか前記Ｃａ＋＋によって凝集して沈降した微粒子群
を含む汚泥粒子群をケル化して固化する。そしてこの凝
集過程においてアルギン酸カルシウムか生成しているも
のと推定される。By doing this, the water-soluble calcium compound dissolves and ionizes in the sludge water, and the Ca++ generated in this process aggregates fine particles with a light specific gravity that are easily suspended by the disturbance. The sludge particles, including the fine particles that are flocculated and settled by sodium alginate or the Ca++ in the sludge water in which water-soluble calcium compounds are dissolved, are transformed into coarse particles that are difficult to become turbid, and the specific gravity of the flocculated particles is increased, and the sludge particles are kelized and solidified. . It is presumed that calcium alginate is produced during this aggregation process.
本発明の養殖漁場に形成された汚泥水の処理方法におい
ては、養殖漁場から採取した汚泥水にアルギン酸ナトリ
ウムおよび水溶性カルシウム化合物を順次添加し、しか
る後に酸を添加して水相を中和することか好ましい。In the method of treating sludge water formed in an aquaculture fishing ground according to the present invention, sodium alginate and a water-soluble calcium compound are sequentially added to sludge water collected from an aquaculture fishing ground, and then an acid is added to neutralize the aqueous phase. That's preferable.
発明の詳細な説明
以下、本発明に係る養殖漁場に形成された汚泥水の処理
方法について具体的に説明する。DETAILED DESCRIPTION OF THE INVENTION A method for treating sludge water formed in an aquaculture fishing ground according to the present invention will be specifically described below.
本発明の養殖漁場に形成された汚泥水の処理方法は、養
殖漁場から採取した汚泥水にアルギン酸アルカリ金属塩
を添加し、次いで水溶性カルシウム化合物を順次添加す
るものである。The method of treating sludge water formed in an aquaculture fishing ground according to the present invention is to add an alginate alkali metal salt to the sludge water collected from an aquaculture fishing ground, and then sequentially add a water-soluble calcium compound.
本発明の養殖漁場に形成された汚泥水の処理方法に用い
られるアルギン酸ナトリウムの適性な添加量は、処理対
象の汚泥水に占める汚泥粒子の割合や水溶性カルシウム
化合物の種類などに応して異なるか、例えば水溶性カル
シウム化合物か生石灰であって汚泥水の採取かポンプに
よって汚泥水を汲み上げる通常の方法で行なわれる場合
、固形分総量でこの際の撹乱により微粒子群か懸濁化し
た汚泥水１Ω当りｌｐｐｍ〜５００ｐｐｍとすることか
好ましい。The appropriate amount of sodium alginate used in the method of treating sludge water formed in an aquaculture fishing ground of the present invention varies depending on the proportion of sludge particles in the sludge water to be treated, the type of water-soluble calcium compound, etc. For example, if water-soluble calcium compounds or quicklime are used, and the sludge water is collected by the usual method of collecting sludge water or pumping sludge water, the total solid content will be 1Ω of sludge water in which fine particles are suspended due to the disturbance. It is preferable that the amount is 1 ppm to 500 ppm.
また、本発明の養殖漁場に形成されたどり泥水の処理方
法に用いられる水溶性カルシウム化合物としては、生石
灰、消石灰、あるいは塩化カルシウム、臭化カルシウム
、ヨウ化カルシウム等のノ＼ロゲン化カルシウム、硝酸
カルシウム、酢酸カルシウム等の水溶性カルシウム塩か
挙げられ、特に生石灰および消石灰が撹乱により懸濁化
し易い微粒子群を凝集する能力に優れ、凝集した微粒子
の比重を大きくする上、入手かし易く安価であるなどの
点において好ましい。In addition, water-soluble calcium compounds used in the method of treating muddy water formed in aquaculture and fishing grounds of the present invention include quicklime, slaked lime, calcium chlorides such as calcium chloride, calcium bromide, and calcium iodide, and calcium nitrate. , water-soluble calcium salts such as calcium acetate, etc., especially quicklime and slaked lime, which have excellent ability to aggregate fine particles that are easily suspended by disturbance, increase the specific gravity of aggregated fine particles, and are easily available and inexpensive. It is preferable in these respects.
これ等の水溶性カルシウム化合物の添加量は、処理対象
となっている汚泥水に占める撹乱により懸濁化し易い微
粒子群の量や水溶性カルシウム化合物の種類などに応じ
て異なるが、例えば水溶性カルシウム化合物が生石灰で
あって汚泥水の採取がポンプによって汚泥水を汲み上げ
る通常の方法で行なわれる場合、この際の撹乱により微
粒子群が懸濁化した汚泥水１ｇ当り０．１ｇ〜１．０ｇ
とすることが好ましい。The amount of these water-soluble calcium compounds added varies depending on the amount of fine particles that are easily suspended by disturbance in the sludge water to be treated and the type of water-soluble calcium compounds. When the compound is quicklime and the sludge water is collected by the usual method of pumping up the sludge water, the amount of fine particles suspended due to the disturbance at this time is 0.1 to 1.0 g per 1 g of sludge water.
It is preferable that
これ等の水溶性カルシウム化合物は粉末状で添加するこ
ともできるし、あるいは石灰乳のごときスラリー状また
はペースト状で添加することもでき、通常、これ等の水
溶性カルシウム化合物の添加は処理対象の汚泥水を攪拌
しながら行われる。These water-soluble calcium compounds can be added in powder form, or they can be added in slurry or paste form, such as milk of lime. This is done while stirring the sludge water.
本発明の養殖漁場に形成された汚泥水の処理方法は、以
下のようにして行われる。The method of treating sludge water formed in an aquaculture fishing ground according to the present invention is carried out as follows.
養殖漁場から採取した汚泥水にアルギン酸ナトリウムを
添加し、次いで水溶性カルシウム化合物を添加する。Sodium alginate is added to sludge water collected from aquaculture farms, and then a water-soluble calcium compound is added.
そしてこのようにして養殖漁場に形成された汚泥水に水
溶性カルシウム化合物を添加することにより汚泥水中に
懸濁化した微粒子群が短時間の内に沈降して汚泥粒子群
と水が分離され、清澄な水が得られると同時に、水溶性
カルシウム化合物が溶解した汚泥水中でアルギン酸ナト
リウムが前記Ｃａ によって凝集して沈降した微粒子
群を含む汚泥粒子をゲル化して固化する。By adding a water-soluble calcium compound to the sludge water formed in the aquaculture fishing grounds in this way, the fine particles suspended in the sludge water settle within a short time, and the sludge particles and water are separated. At the same time as clear water is obtained, sodium alginate in the sludge water in which a water-soluble calcium compound is dissolved is agglomerated by the Ca, and sludge particles containing precipitated fine particles are gelled and solidified.
好ましくは養殖漁場から採取した汚泥水にアルギン酸ナ
トリウムを添加し、次いで水溶性カルシウム化合物を添
加した後に酸を添加して水相を採取した汚泥水が真水の
場合にはｐＨが６．５〜８．５となるまで、採取した汚
泥水が海水の場合にはｐＨが７．８〜８．３となるまで
酸により中和する。Preferably, sodium alginate is added to sludge water collected from an aquaculture fishing ground, then a water-soluble calcium compound is added, and then an acid is added to collect the aqueous phase. If the sludge water is fresh water, the pH is 6.5 to 8. If the collected sludge water is seawater, it is neutralized with an acid until the pH becomes 7.8 to 8.3.
なお、この中和は汚泥処理後の清澄化した水を再び養殖
漁場が設けられている河川、湖沼または海に戻す前に行
なうもので、上記真水の場合のｐＨ値の範囲は、生活環
境の保全に関する環境基準の水産１〜３級河川、水産１
〜３級湖沼に対して定められた範囲に相当し、上記海水
の場合のｐＨ値の範囲は、水産１．２級海域に対して定
められた範囲に相当する。Note that this neutralization is performed before returning the clarified water after sludge treatment to the rivers, lakes, or oceans where aquaculture and fishing grounds are established. Fisheries class 1 to 3 rivers and fisheries 1 according to environmental standards for conservation
This corresponds to the range specified for ~3rd class lakes and marshes, and the pH value range for seawater corresponds to the range specified for 1.2nd class fisheries sea areas.
発明の効果
以上に説明してきたように本発明によれば、養殖漁場か
ら採取した汚泥水に添加した水溶性カルシウム化合物に
よって汚泥水中に懸濁化した微粒子群が短時間の内に沈
降して汚泥粒子群と水が分離され、同時に水溶性カルシ
ウム化合物が溶解した汚泥水中に添加したアルギン酸ナ
トリウムによって前記処理で沈降した微粒子群を含む汚
泥粒子群がゲル化して固化し、水と分離した汚泥粒子群
の処理が容易に行なえるようになる。Effects of the Invention As explained above, according to the present invention, fine particles suspended in the sludge water are precipitated in a short period of time due to the water-soluble calcium compound added to the sludge water collected from the aquaculture fishing area, thereby forming sludge. The particles and water are separated, and at the same time, the sludge particles containing the fine particles precipitated in the above treatment are gelled and solidified by sodium alginate added to the sludge water in which the water-soluble calcium compound is dissolved, and the sludge particles are separated from the water. processing becomes easier.
実施例
以下に実施例を示し、本発明をさらに具体的に説明する
。EXAMPLES The present invention will be explained in more detail with reference to Examples below.
（実施例）
銀サケの養殖場の底部に堆積した汚泥水５００ｇを２０
００ｃｃの海水に混合して懸濁化したものを試料とした
。(Example) 500g of sludge water accumulated at the bottom of a silver salmon farm was
A sample was prepared by mixing and suspending the sample in 00 cc of seawater.
この試料１００ｍｊｌｌを１００ｍ１ｌのメスシリンダ
ーに移し、このメスシリンダー中の試料に、アルギン酸
ナトリウム１．０ｍｇを水１ｇに溶解したアルギン酸ナ
トリウム水溶液１０ｃｃを添加し、次いで０．３ｇのＣ
ａＯを添加した後、Ｈ２ＳＯ４を加えてｐＨを７とした
。Transfer 100ml of this sample to a 100ml measuring cylinder, add 10cc of a sodium alginate aqueous solution in which 1.0mg of sodium alginate is dissolved in 1g of water, and then add 0.3g of C.
After adding aO, H2SO4 was added to bring the pH to 7.
このようにしてメスシリンダー中の試料がｐＨ７となっ
た時点から試料を静置すると、静置してから２分経過し
た時点でメスシリンダー中の試料は、既に透明な上澄液
部分と汚泥粒子群が懸濁化した不透明液部分とに分離さ
れ、この境を示すメスシリンダーの目盛の値は３６ｍ、
７７てあった。If the sample in the graduated cylinder is allowed to stand after the pH reaches 7 in this way, the sample in the graduated cylinder will already have a transparent supernatant part and sludge particles after 2 minutes have passed. The group is separated into a suspended opaque liquid part, and the scale value of the graduated cylinder indicating this boundary is 36 m.
There was 77.
また、静置してから１ｏ分経過した時点における前記透
明な上澄液部分と汚泥粒子群が懸濁化した不透明液部分
との境を示すメスシリンダーの目盛の値は２２ｍ、１７
てあり、この時点でメスシリンダーを水平になるまで傾
斜したところ、メスシリンダー中の汚泥粒子群が懸濁化
した不透明液部分はほとんど流動することなく固化して
おり、透明な上澄液部分と汚泥粒子群が懸濁化した不透
明液部分との完全な分離が行なえた。Furthermore, at the time when 10 minutes had passed after being allowed to stand still, the values on the scale of the graduated cylinder indicating the boundary between the transparent supernatant liquid portion and the opaque liquid portion in which sludge particles were suspended were 22 m, 17 m.
At this point, when the graduated cylinder was tilted until it became horizontal, the opaque liquid part in which the sludge particles were suspended in the graduated cylinder had solidified with almost no flow, and was separated from the transparent supernatant liquid part. It was possible to completely separate the sludge particles from the opaque liquid part in which they were suspended.
（比較例１）
上記実施例と同様の試料１００ｒｒ３ｊ７を収容した１
００ｍ、１７のメスシリンダー中に、０．３ｇのＣａＯ
を添加し、次いでＨ２ＳＯ４を加えてｐＨを７とした後
、アルギン酸ナトリウム１．０ｍｇを水１ｇに溶解した
アルギン酸ナトリウム水溶液１０ｃｃを添加してから試
料を静置すると、静置してから２分経過した時点でメス
シリンダー中の試料は、既に透明な上澄液部分と汚泥粒
子群か懸濁化した不透明液部分とに分離され、この境を
示すメスシリンダーの目盛の値は３６ｍ１ｌであった。(Comparative Example 1) 1 containing 100rr3j7 of the same sample as in the above example
00m, 0.3g of CaO in a 17 graduated cylinder
was added, then H2SO4 was added to adjust the pH to 7, and then 10 cc of a sodium alginate aqueous solution in which 1.0 mg of sodium alginate was dissolved in 1 g of water was added, and the sample was allowed to stand for 2 minutes. At this point, the sample in the graduated cylinder was already separated into a transparent supernatant liquid part and an opaque liquid part containing suspended sludge particles, and the value on the scale of the graduated cylinder indicating this boundary was 36 ml.
また、静置してから１０分経過した時点における前記透
明な上澄液部分と汚泥粒子群が懸濁化した不透明液部分
との境を示すメスシリンダーの目盛の値は２２ｍ１）で
あり、この時点てメスシリンダーを水平になるまで傾斜
したところ、メスシリンダー中の汚泥粒子群が懸濁化し
た不透明液部分は流動し、その１部が透明な上澄液部分
と共にメスシリンダーから流出した。In addition, the value on the scale of the measuring cylinder indicating the boundary between the transparent supernatant liquid portion and the opaque liquid portion in which sludge particles are suspended after 10 minutes of standing is 22 m1). At this point, the graduated cylinder was tilted until it became horizontal, and the opaque liquid portion in which the sludge particles were suspended in the graduated cylinder flowed, and a portion of it flowed out of the graduated cylinder along with the transparent supernatant liquid portion.
（比較例２）
アルギン酸ナトリウムをポリアクリルアミドに代えた以
外は実施例と同様に°してｐＨ調整後の静置試料を観察
した。(Comparative Example 2) A stationary sample after pH adjustment was observed in the same manner as in Example except that sodium alginate was replaced with polyacrylamide.
その結果、静置してから２分経過した時点てメスシリン
ダー中の試料後は、既に透明な上澄液部分と汚泥粒子群
が懸濁化した不透明液部分とに分離され、この境を示す
メスシリンダーの目盛の値は３６ｍ１）であった。As a result, after 2 minutes of standing, the sample in the graduated cylinder was already separated into a transparent supernatant liquid part and an opaque liquid part in which sludge particles were suspended, and this boundary was marked. The scale value of the graduated cylinder was 36 m1).
また、静置してから１０分経過した時点における前記透
明な上澄液部分と汚泥粒子群が懸濁化した不透明液部分
との境を示すメスシリンダーの目盛の値は２２ｒ＋ｌで
あり、この時点でメスシリンダーを水平になるまで傾斜
したところ、メスシリンダー中の汚泥粒子群が懸濁化し
た不透明液部分は流動し、そのほとんどが透明な上澄液
部分と共にメスシリンダーから流出した。Furthermore, the value on the scale of the measuring cylinder indicating the boundary between the transparent supernatant liquid portion and the opaque liquid portion in which sludge particles are suspended is 22r+l at the time when 10 minutes have elapsed since the sludge particles have been suspended. When the graduated cylinder was tilted until it became horizontal, the opaque liquid portion in which the sludge particles were suspended in the graduated cylinder flowed, and most of it flowed out of the graduated cylinder along with the transparent supernatant liquid portion.
Claims (2)
ウムを添加し、次いで水溶性カルシウム化合物を添加す
ることを特徴とする養殖漁場に形成された汚泥水の処理
方法。(1) A method for treating sludge water formed in an aquaculture/fishing ground, which comprises adding sodium alginate to the sludge water collected from the aquaculture/fishing ground, and then adding a water-soluble calcium compound.
加し、次いで水溶性カルシウム化合物を添加し、しかる
後に酸を添加して水相を中和することを特徴とする請求
項１記載の養殖漁場に形成された汚泥水の処理方法。The aquaculture fishing ground according to claim 1, characterized in that sodium alginate is added to the sludge water collected from (2), then a water-soluble calcium compound is added, and then an acid is added to neutralize the aqueous phase. How to treat the formed sludge water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2148170A JPH0440287A (en) | 1990-06-06 | 1990-06-06 | Treatment of sludge water formed in breeding fishing ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2148170A JPH0440287A (en) | 1990-06-06 | 1990-06-06 | Treatment of sludge water formed in breeding fishing ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0440287A true JPH0440287A (en) | 1992-02-10 |
Family
ID=15446814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2148170A Pending JPH0440287A (en) | 1990-06-06 | 1990-06-06 | Treatment of sludge water formed in breeding fishing ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0440287A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003045847A3 (en) * | 2001-11-16 | 2003-07-17 | Technocon Gmbh | Method for biological treatment of water by adding macromolecular carbohydrates |
| CN108299066A (en) * | 2017-09-25 | 2018-07-20 | 路德环境科技股份有限公司 | The production method of Chinese garden planting soil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5011191A (en) * | 1973-05-28 | 1975-02-05 |
-
1990
- 1990-06-06 JP JP2148170A patent/JPH0440287A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5011191A (en) * | 1973-05-28 | 1975-02-05 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003045847A3 (en) * | 2001-11-16 | 2003-07-17 | Technocon Gmbh | Method for biological treatment of water by adding macromolecular carbohydrates |
| CN1312054C (en) * | 2001-11-16 | 2007-04-25 | 泰克诺孔有限公司 | Water bio-treatment method by adding macromolecular carbohydrate compound |
| US7247239B2 (en) | 2001-11-16 | 2007-07-24 | Technocon Gmbh | Method for biological treatment of water by adding macromolecular carbohydrates |
| CN108299066A (en) * | 2017-09-25 | 2018-07-20 | 路德环境科技股份有限公司 | The production method of Chinese garden planting soil |
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