JP3395066B2 - Use and treatment of attached organisms such as mussels - Google Patents

Description

Detailed Description of the Invention

[0001] The present invention relates to a method for feeding and fertilizing attached organisms such as mussels, which are unused resources, or treating them as industrial waste.

[0002]

PRIOR ART Attached organisms such as mussels attach to breakwaters and harbor quays provided in the sea, work such as piers, fishing gear such as fixed nets that are installed for a long period of time, especially floats and ropes, and cause coastal damage. In factories and power plants located in the area, they also inhabit the intake pipes for taking in cooling water and the side walls of open channels. The species composition of these periphytes is
As shown in Table 1, in one example that is considered to be average although it varies slightly depending on the season, there are 63 species of 8 animal phyla.

[0003]

[Table 1]

As shown in Table 2, 14 species appear in Mollusca which account for 84% of the total weight ratio. These include not only bivalves but also hard snails of gastropods, of which 4.5 wt / m ² is 9 wt%.
The most common mussels account for 1.3% (76.6% of the total weight). This mussel is a non-native species and is a naturalized animal that is carried by adhering to ships on foreign routes.If anything, it is often found in eutrophic waters, has a long spawning period, and breeds for about a week, which leads to economic development and population growth. In the present situation where eutrophication is progressing with concentration, there is no sign that it will decrease in the future,
The largest amount of deposition is from the bottom of the tide line to the water depth of 5-6.
It is inhabited and attached to m by the foot thread that comes out of the foot thread hole in the center of the foot, and generally adheres in 3 to 5 layers. However, when the environment deteriorates, the byssus naturally moves out of the foreshoe hole and moves, or falls off on the vertical surface.

[0005]

[Table 2]

[0006] In these mussels, floating mud mainly composed of organic matter is buried in the space between the contiguous individuals, and animals such as those shown in Tables 1 and 2 inhabit therein and on the surface of shells. is doing. It forms a population of so-called diverse species.

[0007] Of the above-mentioned populations in such an environment, only the large-grown blue mussels are rarely used as food. This is because the place of adhesion (habitation) is on the surface of water or the depth of water is shallow, and unless it is treated specially, it has an oily odor and cannot be used as food.

From the above, it can be said that the other shellfish which appear here are not used at all at present.

[0009]

By the way, if it adheres to the above-mentioned intake pipe, the pipe may be blocked, and the required amount of water may not be obtained, which may be a nuisance to the operation of various facilities. In addition, on a vertical surface such as an open dock, the thickness of 3 to 5 layers is 15 to
When it reaches 20 cm, the weight and water flow increase resistance due to waves, etc., the withdrawal of the assimilation due to environmental deterioration, the adhesive strength decreases due to death, etc., and it falls off from the adhesion surface and they flow into the main machine part together with seawater. It is feared that it may cause blockage or serious trouble. In addition, the buoyancy of a fixed net or the like reduces the buoyancy, and the rope increases resistance to tidal currents, etc., and in any case the fishing gear sinks and does not function normally.

For this reason, the water intake facility regularly performs stripping work and is landed on land. In fishing gear, the function is restored by replacing the floats. The attached organisms landed by such work are generally carried out and disposed of as industrial waste. In addition, anything attached to the fishing gear will be left in a fishing port net, etc.
Waiting for the decay of the soft body to disappear, the shells are peeled off to recover the fishing gear performance. These attached organisms, etc. are rotted with the passage of time after landing, causing bad odor pollution and causing harmful insects, so that they cannot be actively disposed of.
Although it is partially incinerated, the short-term treatment before decay contains salt (seawater) in addition to water, as shown in Table 3.

[0011]

[Table 3]

Unable to perform efficient processing. Since petroleum and the like are used for incineration in addition to labor and cost, an efficient treatment method is desired in view of the problem of CO ₂ emission. The present invention has been developed in view of the above circumstances, and has an object to easily treat attached organisms such as mussels landed on land in a short period of time, and to separate and extract processing and effective components as useful resources. .

[0013]

In order to achieve the above-mentioned object, in the present invention, adherent organisms such as mussels are crushed, pH and temperature are adjusted, and a proteolytic agent is added to dissolve soft bodies and the like. To a liquid and separate from the shell. Next, the separated liquid is characterized in that pH and water temperature are adjusted and a protein precipitating agent or a flocculating agent is added to precipitate or agglomerate proteins and the like, and they are separated from water by a conventional method, dehydrated and then dried. It is a thing.

[0014]

[Example] As a first step, attached organisms such as mussels are crushed by a crusher or the like in order to easily act a proteolytic agent on the soft body part. The reason why a crusher or the like is used here is that it is also necessary to crush the hard-shelled snail described above. After the treatment, the pH was adjusted to 7.5 to 8.5 and the water temperature was adjusted to 40 to 50 ° C.
About 0.002 to 0.004% of the weight of the soft body portion (almost 1/2 of the total weight) determined by Table 3 is added to a proteolytic agent such as bioprase, protease, biotamylase, and the mixture is stirred to form a liquid body. And Then, the shell is separated and removed by a conventional method such as filtration to obtain a solution of proteins and the like. Then, at this stage, dehydration treatment may be performed by a conventional method.

In the second step, the solution is cooled to about 30 ° C., and at the same time, PH is adjusted to PH (4.0 to 8.5) suitable for a precipitant or a flocculant using calcium, calcium chloride, magnesium sulfate, Aluminium sulfate, polychlorinated aluminum, reninette, glutaminase, proteinase, trichloroacetic acid, sodium alginate, pepsin, casein, synthetic polymeric compounds such as inorganic or organic precipitants or coagulants including enzymes are suitable together with reaction accelerators. Amount (0.002-0.5 of soft body weight)
%) Is added alone or in combination of two or more kinds to precipitate or flocculate proteins and the like to precipitate or float and remove only water by a conventional method. Next, if necessary, moisture is further removed and the product is dried to obtain an isomorph having a water content of 20 to 30% or less. The above method was used. 8 overall
Table 4 shows an example of the results of treatment of mussels and the like, which account for 4% by weight.

[0016]

[Table 4]

By these treatments, about 1/4 volume of the total weight and 1/8 to 1/10 of the same form of protein and the like are used as feed materials, fertilizers or raw materials for pouring out active ingredients.

[0018]

As described above, the present invention has the following effects. (1) The shell part and the soft body part of periphyton such as mussel are easily separated, and the soft part becomes liquid, and the shell part becomes about 1/2 of the total weight and 1/3 to 1/5 in volume. It is easy to treat as industrial waste, the cost and labor required for the treatment can be saved, and the foul odor pollution due to decay can be prevented. (2) A liquid soft body such as protein is precipitated or aggregated, dehydrated and dried to obtain a solid, which can be used as a feed, a fertilizer, or a raw material of an active ingredient. It can be expected that the attached organisms such as mussels will be recycled.

[Brief description of drawings]

FIG. 1 is a flow chart of the present invention.

Claims (2)

(57) [Claims] 1. A method for crushing attached organisms such as mussel
After adjusting the temperature and temperature, a proteolytic agent is added to dissolve the soft body part and peel it from the shell to make proteins etc. sink, and then separate from the shell by a conventional method. Usage and disposal. 2. A liquid such as a protein formed into a liquid by the method according to claim 1 is adjusted in pH and temperature to add a protein precipitating agent or an aggregating agent to precipitate or agglomerate the protein, etc. A method for using and treating adherent organisms such as mussels, characterized by separating and dehydrating and drying.