JPH089513B2 - Fertilizer manufacturing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for producing a fertilizer from shochu dust and starch dust.

[Conventional technology]

The technology for producing shochu and starch is progressing day by day through technological innovation, and shochu and starch are produced in large quantities and are being enjoyed. Especially shochu is produced and consumed in large quantities due to the shochu boom of today.

However, the large amount of debris generated by their production is not suitable for other uses (for example, feed and fertilizer),
Even if they are discarded, there is no suitable means for treating these wastes and waste liquids, which is a big social problem at present.

 The present invention solves such a problem.

[Means for solving the problem]

The present invention puts shochu dust and starch dregs in a storage tank and aerates, adds animal bone powder, boiles, mixes, cools, dehydrates, and aerates the liquid after separating the solid content to effectively use animal bone powder. Add a coagulant as a component to react, separate into liquid and sludge, add an additive to sludge to make it weakly alkaline, granulate,
This is a fertilizer manufacturing method characterized by drying.

Shochu debris and starch dregs are the organic substances remaining after removing shochu and starch, such as proteins, sugars, alcohols, organic acids,
It has a property of dissolving in water, and PH is about 2-3.

Hereinafter, the method for producing fertilizer will be described with reference to the process diagrams of FIGS. 1 and 2.

In the present invention, first, shochu dust and starch dust are put into a storage tank and aerated (step S1).

Specifically, for example, water is added to these dregs and waste liquid to dilute them, and thereby the concentration and PH are adjusted (normally, the concentration is about 30 to 50
%, PH about 3-4).

Then, the liquid obtained by diluting is aerated. At this time, the water added to the storage tank may be ordinary water, but if the regenerated water generated in the regeneration treatment step S9 described later is used, the water can be effectively used.

Animal bone powder as an additive is added to the liquid after aeration, and PH7
After approximately neutralizing before and after, it is boiled and mixed (step S2).
At this time, a small amount of water is added to supplement the amount evaporated by boiling.

As the animal bone meal used here, bones that have been mostly discarded in the past at livestock farms, particularly animal bones mainly composed of hard bones such as cows, horses, and sheep, are adopted.

Raw bones of these animals are cut into sizes that are easy to burn,
Then, put it in a pressure cooker and boil at about 200 to 400 ° C for about 90 minutes. Then put this bone in the firing furnace, 900 ~ 1100
Bake for about 60 to 180 minutes at about ℃, and naturally cool in the furnace for about 60 minutes to return to room temperature or a state close to this. It is important to remove the organic substances such as gelatin, fats, proteins, and glues other than the bone components remaining in the bones because they may cause oxidative rot.

By the above-mentioned boiling step, most of the organic substances attached not only to the outside but also inside the pores can be separated and removed from the bone.

Then, by passing through the above-mentioned firing step, the remaining organic matter can be completely removed, and at the same time, the humidity (water content) in the bone can be lowered to several% or less, preferably to almost 0%. According to the above-mentioned firing conditions, the bone is whitened and maintains the original tissue state having numerous pores.

After baking and cooling, the bone is crushed and powdered.
About 20 to 200 mesh, and particularly preferably 50 to 100 mesh powdery bone meal.

In the case of bovine bone, the above-mentioned bone meal gives a yield of about 40% by weight compared to raw bone as a raw material. The particles are mainly composed of calcium (about 33% by weight), phosphorus (about 16.7%), barium (about
1.03%), sodium (about 0.76%), sulfur (about 0.64)
%) In addition to magnesium, potassium, chlorine, amine, iron, etc., and countless micropores are continuously present inside and outside the particles. This bone meal is alkaline because it contains calcium.

Next, the liquid after boiling is cooled (step S3). This cooling is usually by natural cooling.

Next, the cooled liquid is dehydrated and separated into a solid content and a liquid (step S4). This separation does not require precise separation, and can be performed by using a simple method such as centrifugation.

The solid content separated here is granulated by adding a granulation aid such as zeolite and a filler, as well as an additive having a nutrient content as feed (step S5), and drying (step S6) to obtain feed. be able to. For the convenience of handling, this feed is preferably weighed (step S7), packed in a bag (step S8), and made into a product in that state.

On the other hand, a large amount of organic substances and the like are melted in the liquid separated in the above step S4 and cannot be discharged or discarded as it is. Therefore, the fertilizer is obtained from this liquid, and a regeneration treatment is performed to obtain clean recycled water (step S9).

FIG. 2 is a process diagram showing in detail the process of regenerating process, that is, the process of manufacturing fertilizer.

First, the liquid from which solids have been separated and removed in step S4 in FIG. 1 is introduced into the adjustment tank, and air is sent to perform aeration (step
11).

Next, the aerated liquid is introduced into a reaction tank, and an aggregating material containing animal bone powder as an active ingredient is added to cause reaction and separation (step S1.
2).

 The same animal bone powder as above is used.

Further, as the aggregating material containing animal bone powder as an active ingredient, there is a solution of animal bone powder or a mixture of animal bone powder and incineration ash, etc. dissolved in an acid, and it is used together with an alkaline agent as necessary.

The liquid in the reaction tank is further separated into a liquid and sludge (aggregate) by adding a flocculant and reacting, and the sludge is precipitated at the bottom of the tank.

The sludge separated by precipitation is mixed with an additive to make it weakly alkaline (step S13).

Any additive may be used as long as it makes the sludge alkaline,
For example, animal bone meal can be mentioned. In addition to granulation aids such as zeolite and fillers, nutrients as fertilizers are added.

Next, the sludge to which the above additive is added is granulated to obtain fertilizer (step S14).

The fertilizer obtained is weighed for convenience of handling (process S1
5), bagging (step 16), and then, for example, natural drying (step S17) is preferable to obtain a product.

The fertilizer thus obtained may be dried, then weighed and packed in a bag. Of course, it is possible to use this fertilizer as a soil conditioner.

On the other hand, the liquid separated in the upper part of the tank in the reaction step of the step S12 is taken out as clean reclaimed water with high transparency by filtering (step S18). This reclaimed water is used as water for diluting shochu debris and starch debris in step S1 of FIG. This makes it possible to effectively use water resources.

〔effect〕

According to the present invention, it is possible to solve the problem of treating shochu dust and starch dust, which has been a problem in treating waste.

Further, by applying a specific treatment means to shochu dust and starch dregs, which were not conventionally suitable as fertilizers, they can be made into fertilizers, and effective use of resources can be achieved.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a process of separating the graphic component of shochu dust and starch dregs and water according to the present invention, and FIG. 2 is a process for explaining a method (regeneration treatment) of the fertilizer of the present invention. It is a figure.

Claims (1)

[Claims] 1. A shochu residue and a starch residue are put into a storage tank and aerated, and animal bone powder is added and boiled, mixed, cooled, dehydrated, and the liquid after the solid content is separated is aerated to obtain animal bone powder. Add a coagulant as an active ingredient to react, separate into liquid and sludge, add additive to sludge to make it weakly alkaline, granulate,
A fertilizer manufacturing method characterized by being dried.