JP4787486B2 - Method for producing liquid fertilizer - Google Patents
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- JP4787486B2 JP4787486B2 JP2004317585A JP2004317585A JP4787486B2 JP 4787486 B2 JP4787486 B2 JP 4787486B2 JP 2004317585 A JP2004317585 A JP 2004317585A JP 2004317585 A JP2004317585 A JP 2004317585A JP 4787486 B2 JP4787486 B2 JP 4787486B2
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- liquid fertilizer
- marine waste
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- 239000007788 liquid Substances 0.000 title claims description 47
- 239000003337 fertilizer Substances 0.000 title claims description 41
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000002699 waste material Substances 0.000 claims description 51
- 239000000052 vinegar Substances 0.000 claims description 25
- 235000021419 vinegar Nutrition 0.000 claims description 25
- 150000001413 amino acids Chemical class 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 13
- 238000010792 warming Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 24
- 238000000034 method Methods 0.000 description 9
- 241000251468 Actinopterygii Species 0.000 description 8
- 235000019688 fish Nutrition 0.000 description 8
- 238000000855 fermentation Methods 0.000 description 6
- 230000004151 fermentation Effects 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 230000005654 stationary process Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 240000005979 Hordeum vulgare Species 0.000 description 2
- 235000007340 Hordeum vulgare Nutrition 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 210000001835 viscera Anatomy 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000252203 Clupea harengus Species 0.000 description 1
- 241000555825 Clupeidae Species 0.000 description 1
- 244000141359 Malus pumila Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 244000098338 Triticum aestivum Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 235000021016 apples Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 235000019514 herring Nutrition 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 235000019512 sardine Nutrition 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Fertilizers (AREA)
Description
本発明は、原料に水産廃棄物を用いた液体肥料に関し、特に、アミノ酸を含んだ液体肥料およびその製造方法に関する。 The present invention relates to a liquid fertilizer using marine waste as a raw material, and more particularly to a liquid fertilizer containing an amino acid and a method for producing the same.
魚を解体する際に生じる魚の頭や内臓などの水産廃棄物は、腐敗しやすく放置すると悪臭が発生するため、窒素などの肥料成分が含まれているにもかかわらず、主に焼却処分されている。 Marine wastes such as fish heads and internal organs that are generated during the dismantling of fish tend to be spoiled and produce bad odors when left untreated. Yes.
しかし、ゴミの減量化と資源の有効利用の観点から、水産廃棄物を肥料として有効利用する方法が研究されている。そして、水産廃棄物を煮沸して固形物を取り除き、この固形物を取り除いた煮汁に硝酸を添加して煮汁の水素イオン指数（以下、ｐＨという）を１．４ないし２．０程度に調整して液体肥料を製造する方法が提案されている（例えば、特許文献１参照）。 However, from the viewpoint of waste reduction and effective use of resources, methods for effectively using marine waste as fertilizer are being studied. Then, the aquatic waste is boiled to remove solids, and nitric acid is added to the broth from which these solids have been removed to adjust the hydrogen ion index (hereinafter referred to as pH) of the broth to about 1.4 to 2.0. Thus, a method for producing liquid fertilizer has been proposed (see, for example, Patent Document 1).
一方、原料に水産廃棄物が用いられた液体肥料は、農林物資の規格化および品質表示の適正化に関する法律（いわゆるＪＡＳ法）の改正に伴い、化学的に合成された物質を添加しないで製造することが望まれている。そこで、水産廃棄物を煮沸して得た煮汁に、発酵法で製造した有機酸を添加してｐＨを４．８ないし５．７に調整する液体肥料の製造方法が提案されている（例えば、特許文献２参照）。
しかしながら、前記特許文献１に係る製造方法で製造された液体肥料は、ｐＨが１．２ないし２．８と低いため、そのままでは使用できない。そこで、この液体肥料は、ｐＨが約７になるように、水酸化カリウムなどの化学的に合成された物質が添加されている。そのために、この液体肥料は、農林物資の規格化および品質表示の適正化に関する法律に適合せず、用途が限定される。 However, since the liquid fertilizer manufactured with the manufacturing method according to Patent Document 1 has a low pH of 1.2 to 2.8, it cannot be used as it is. Therefore, a chemically synthesized substance such as potassium hydroxide is added to the liquid fertilizer so that the pH is about 7. For this reason, this liquid fertilizer does not comply with the law on the standardization of agricultural and forestry materials and the appropriateness of quality labeling, and its use is limited.
また、前記特許文献２に係る製造方法は、水産廃棄物を煮沸して固形物を取り除く作業を繰り返し、煮汁に含まれる魚のエキスを３％ないし４％に減らしている。そのために、この製造方法で製造された液体肥料は、肥料として利用できる成分が少ないので、尿素などの肥料成分を別に加える必要がある。 Moreover, the manufacturing method according to Patent Document 2 repeats the operation of boiling marine waste to remove solids, and reduces the fish extract contained in the broth to 3% to 4%. Therefore, since the liquid fertilizer manufactured with this manufacturing method has few components which can be used as a fertilizer, it is necessary to add fertilizer components, such as urea, separately.
そこで、本発明では、前記した課題を解決し、醸造酢でもって水産廃棄物の腐敗を防いで、肥料成分に富む液体肥料を提供することを目的とする。 Therefore, an object of the present invention is to provide a liquid fertilizer rich in fertilizer components by solving the above-described problems and preventing the rot of marine waste with brewed vinegar.
請求項１に係る発明は、原料に水産廃棄物を用いて、ｐＨが５．０〜７．５の弱酸性から中性の性質を有し、アミノ酸が少なくとも５％以上含まれる液体肥料を製造する方法であって、ｐＨが５．０〜５．５となるように水産廃棄物に醸造酢を加える添加工程と、前記添加工程で醸造酢を加えた水産廃棄物を２５℃ないし４２℃で温める加温工程と、前記加温工程で温めた水産廃棄物が液体と個体に分離するまで３ヶ月以上常温で静かに置いて前記液体のｐＨを５．０〜７．５とする静置工程とを有する方法である。 The invention according to claim 1 uses aquatic waste as a raw material to produce a liquid fertilizer having a pH of 5.0 to 7.5 and having a weakly acidic to neutral property and containing at least 5% of amino acids. And adding the brewing vinegar to the marine waste so that the pH is 5.0 to 5.5, and the marine waste adding the brewing vinegar in the adding step at 25 ° C. to 42 ° C. A warming step for warming, and a stationary step for setting the pH of the liquid to 5.0 to 7.5 by gently placing it at room temperature for 3 months or longer until the marine waste heated in the warming step is separated into a liquid and a solid. It is the method which has these.
請求項１に係る発明によれば、水産廃棄物に醸造酢を加えて液体肥料を製造するので、農林物資の規格化および品質表示の適正化に関する法律の条件を満たすことができる。また、水産廃棄物に含まれる魚のエキスを取り除かずに液体肥料を製造するので、肥料成分に富む液体肥料を製造することもできる。さらに、醸造酢に含まれる酢酸でもって水産廃棄物を酢酸発酵させ、タンパク質が植物の吸収しやすいアミノ酸に分解するので、肥料を速やかに効かせることもできる。また、醸造酢の殺菌作用でもって水産廃棄物の腐敗を抑えるので、悪臭の発生を防止することもできる。 According to the first aspect of the present invention, liquid fertilizer is produced by adding brewed vinegar to aquatic waste, so that it is possible to satisfy the conditions of the law on the standardization of agricultural and forestry materials and the optimization of quality display. Moreover, since liquid fertilizer is manufactured without removing the fish extract contained in marine waste, liquid fertilizer rich in fertilizer components can also be manufactured. Furthermore, since the marine waste is fermented with acetic acid with acetic acid contained in the brewed vinegar and the protein is decomposed into amino acids that are easily absorbed by plants, the fertilizer can be used quickly. Moreover, since the rot of the marine waste is suppressed by the sterilizing action of the brewed vinegar, the generation of malodor can be prevented.
次に、本発明のアミノ酸入りの液体肥料およびその製造方法の実施形態について、適宜図面を参照しながら詳細に説明する。図１は、本実施形態に係るアミノ酸入りの液体肥料の製造工程を示すフローチャート図である。図１に示すように、本実施形態の製造方法は、原料の水産廃棄物を細かく砕く破砕工程Ｓ１と、水産廃棄物に醸造酢を加える添加工程Ｓ２と、水産廃棄物を温める加温工程Ｓ３と、この加温工程Ｓ３で温めた水産廃棄物が液体と個体に分離するまで常温で静かに置く静置工程Ｓ４と、分離した液体を抜き取る抜取り工程Ｓ５とを有する。 Next, embodiments of the liquid fertilizer containing amino acids and the method for producing the same according to the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 is a flowchart showing the steps for producing an amino acid-containing liquid fertilizer according to this embodiment. As shown in FIG. 1, the manufacturing method of this embodiment includes a crushing step S1 for finely crushing raw marine waste, an addition step S2 for adding brewed vinegar to the marine waste, and a heating step S3 for warming the marine waste. And a stationary step S4 that gently puts the marine waste heated in the heating step S3 at room temperature until it is separated into a liquid and a solid, and an extraction step S5 that extracts the separated liquid.
破砕工程Ｓ１は、原料の水産廃棄物を細かく砕く工程である。原料は、魚を解体する際に生じる魚の頭や内臓などの水産廃棄物であれば良いが、数の子に加工されるニシンが好ましい。また、水産廃棄物以外にも、イワシなどの収穫量の多い魚や利用価値の低い魚をそのまま用いることもできる。この破砕工程Ｓ１は、水産廃棄物を公知のチョッパーでみじん切りの状態に細かく砕く工程であるが、水産廃棄物が既に細かく砕かれた状態であれば省略することもできる。 The crushing step S1 is a step of crushing raw marine waste. The raw material may be marine waste such as fish heads and internal organs generated when the fish is dismantled, but herring processed into a number of offspring is preferred. In addition to marine waste, fish with a high yield such as sardines and fish with low utility value can be used as they are. The crushing step S1 is a step of finely crushing the marine waste into a chopped state with a known chopper, but may be omitted if the aquatic waste is already finely crushed.
添加工程Ｓ２は、原料の水産廃棄物に醸造酢を加える工程である。添加する醸造酢は、米や小麦などを原料に発酵作用で製造した酢であれば良いが、大麦を原料にした醸造酢が好ましい。なお、醸造酢は前記のような穀物酢に限られず、リンゴなどを原料にした果実酢でも良い。水産廃棄物に加える醸造酢の量は、醸造酢の種類で異なるが、醸造酢を加えた後の水産廃棄物のｐＨが５ないし５．５になるように添加する。なお、大麦を原料にした醸造酢の場合には、水産廃棄物に対して重量比で１５％ないし１６％の量を添加すれば良い。添加工程Ｓ２では、水産廃棄物に殺菌効果のある醸造酢を加えることで、雑菌の増殖を抑えて、水産廃棄物の腐敗を防ぐことができる。 The addition step S2 is a step of adding brewed vinegar to the raw marine waste. The brewed vinegar to be added may be any vinegar produced by fermentation using rice or wheat as a raw material, but brewed vinegar made from barley is preferred. The brewed vinegar is not limited to the grain vinegar as described above, but may be fruit vinegar made from apples or the like. The amount of brewing vinegar added to the marine waste varies depending on the type of brewing vinegar, but is added so that the pH of the marine waste after the brewing vinegar is added is 5 to 5.5. In the case of brewed vinegar using barley as a raw material, an amount of 15% to 16% by weight may be added to the marine waste. In addition process S2, the proliferation of miscellaneous bacteria can be suppressed by adding the brewing vinegar which has a bactericidal effect to marine waste, and the decay of marine waste can be prevented.
加温工程Ｓ３は、醸造酢を加えた水産廃棄物を温める工程である。この加温工程Ｓ３は、換気口を備えてタンク内部の空気を交換するようにした公知の加温タンクで行う。加温工程Ｓ３では、発酵に適した２５℃ないし４２℃に水産廃棄物を温めるが、４０℃に温めることが好ましい。この加温工程Ｓ３は、個体と液体とが混ざり合った状態の水産廃棄物が、個体と液体とに分離し始めるまで行うことが必要である。この加温時間は、２４時間以上が好ましいが、より好ましくは７２時間以上である。加温工程Ｓ３では、水産廃棄物を発酵に適した２５℃ないし４２℃に温めることで、醸造酢に含まれる酢酸でもって酢酸発酵が円滑に始まる。なお、水産廃棄物の温度が２５℃より下がると、個体と液体とに分離を始めるまでの時間が、２５℃ないし４２℃に加温する場合に比べて長くかかる。一方、水産廃棄物を４２℃より高い温度に温めると、水産廃棄物が固まり円滑に個体と液体とに分離しない。 The heating step S3 is a step of heating the marine waste to which brewed vinegar is added. This warming step S3 is performed in a known warming tank provided with a ventilation port to exchange the air inside the tank. In the heating step S3, the marine waste is warmed to 25 ° C. to 42 ° C. suitable for fermentation, but is preferably warmed to 40 ° C. This heating step S3 needs to be performed until the marine waste in a state where the solid and the liquid are mixed begins to separate into the solid and the liquid. The warming time is preferably 24 hours or longer, more preferably 72 hours or longer. In the heating step S3, by heating the marine waste to 25 ° C. to 42 ° C. suitable for fermentation, acetic acid fermentation starts smoothly with acetic acid contained in the brewed vinegar. In addition, when the temperature of aquatic waste falls below 25 degreeC, it will take long compared with the case where it heats to 25 degreeC thru | or 42 degreeC until it separates into a solid and a liquid. On the other hand, when the marine waste is heated to a temperature higher than 42 ° C., the marine waste is hardened and is not smoothly separated into a solid and a liquid.
静置工程Ｓ４は、加温工程Ｓ３で温めた水産廃棄物を常温で静かに置く工程である。この静置工程Ｓ４は、換気口を備えてタンク内部の空気を交換するようにした公知の貯留タンクで行う。静置工程Ｓ４は常温で行うが、冬の期間には水産廃棄物が凍結しないように、タンクを加温するなどの凍結防止対策を行うことが好ましい。静置工程Ｓ４は、この貯留タンクに入れた水産廃棄物が、液体と個体とに分離するまで行う。より詳細に説明すれば、この静置工程Ｓ４で、水産廃棄物がその表層から脂質、液体、個体の順に層状に分離する。なお、静置工程Ｓ４の静置期間は、この工程を行う地域や季節で異なるが、３ヶ月以上が好ましく、より好ましくは半年以上である。静置工程Ｓ４では、醸造酢に含まれる酢酸でもって水産廃棄物を酢酸発酵させ、タンパク質を植物の吸収しやすいアミノ酸に分解することができる。 The standing step S4 is a step of gently placing the marine waste heated in the heating step S3 at room temperature. This stationary step S4 is performed in a known storage tank that is provided with a ventilation port to exchange air inside the tank. The stationary step S4 is performed at room temperature, but it is preferable to take anti-freezing measures such as heating the tank so that the marine waste is not frozen during the winter period. The stationary step S4 is performed until the marine waste put in the storage tank is separated into liquid and solid. If it demonstrates in detail, in this stationary process S4, aquatic waste will isolate | separate into a layer form in order of a lipid, a liquid, and a solid from the surface layer. In addition, although the stationary period of stationary process S4 changes with the area and season which perform this process, 3 months or more are preferable, More preferably, it is 6 months or more. In the stationary step S4, the marine waste can be fermented with acetic acid with acetic acid contained in the brewed vinegar, and the protein can be decomposed into amino acids that are easily absorbed by plants.
抜取り工程５は、分離した液体部分を貯留タンクから抜き取る工程である。抜き取られた液体は、容器に詰められて液体肥料として利用される。この液体肥料は、使用する植物の種類に応じて最適な濃度に希釈することが好ましく、例えば、野菜などの農作物に使用する場合には約５００倍に希釈することが好ましい。 The extraction process 5 is a process of extracting the separated liquid portion from the storage tank. The extracted liquid is packed in a container and used as liquid fertilizer. This liquid fertilizer is preferably diluted to an optimum concentration according to the type of plant to be used. For example, when used for agricultural crops such as vegetables, it is preferably diluted about 500 times.
以上のような製造方法で製造された液体肥料は、肥料成分のうちで主な要素である窒素を２．０％ないし６．０％、リン酸を０．２％ないし１．５％、カリウムを０．３％ないし１．０％の割合で含んでおり、ｐＨが５．０ないし７．５であり弱酸性から中性の性質を有している。また、アミノ酸を５％ないし１５％の割合で含んでいる。 The liquid fertilizer manufactured by the manufacturing method as described above is composed of 2.0% to 6.0% nitrogen, 0.2% to 1.5% phosphoric acid, potassium, which are main components among the fertilizer components. In a proportion of 0.3% to 1.0%, and has a pH of 5.0 to 7.5 and has a weakly acidic to neutral nature. It also contains amino acids at a rate of 5% to 15%.
本実施形態に係る液体肥料の製造方法では、水産廃棄物を煮沸して固形物を取り除くことなく液体肥料を製造できるので、肥料成分に富む液体肥料を製造することができる。また、水産廃棄物を従来のようにｐＨ１．４ないし２．０に調整しなくても、ｐＨ５ないし５．５に調整して液体肥料を製造できるので、化学的に合成された物質を加えることなく植物の生育に適したｐＨである５．５ないし７．０に近い値の液体肥料を製造することができる。なお、本実施形態に係る液体肥料のｐＨは、５．０ないし７．５であるが、より好ましくは植物の生育に適したｐＨである５．５ないし７．０である。 In the method for producing liquid fertilizer according to the present embodiment, liquid fertilizer can be produced without boiling solid waste and removing solid matter, so that liquid fertilizer rich in fertilizer components can be produced. Also, it is possible to produce liquid fertilizer by adjusting the pH to 5 to 5.5 without adjusting the fishery waste to pH 1.4 to 2.0 as before, so add a chemically synthesized substance. Therefore, it is possible to produce a liquid fertilizer having a value close to 5.5 to 7.0, which is a pH suitable for plant growth. In addition, although the pH of the liquid fertilizer which concerns on this embodiment is 5.0 to 7.5, More preferably, it is 5.5 to 7.0 which is pH suitable for plant growth.
また、最近の研究では、植物は無機物だけでなく、有機物の分解過程で発生するアミノ酸なども吸収し、このアミノ酸には即効性があることが示唆されている。また、アミノ酸が土壌中の微生物の繁殖を促し、微生物の活動によって土壌が肥沃になることが知られている。そこで、本実施形態に係る液体肥料の製造方法では、醸造酢に含まれる酢酸でもって水産廃棄物を酢酸発酵させ、タンパク質がアミノ酸に分解することで、アミノ酸を含む液体肥料を製造することができる。本実施形態に係る液体肥料に含まれるアミノ酸の割合は、５％ないし１５％であるが、この割合は静置工程Ｓ４の期間が長くなるほど高くなる傾向が確認できる。例えば、静置工程Ｓ４を６ヶ月間行った場合には、アミノ酸を１２％の割合で含んでいた。なお、液体肥料にアミノ酸が含まれる割合は、植物の生育試験の結果から、少なくとも５％あれば良く、より好ましくは１０％以上である。 In addition, recent research suggests that plants absorb not only inorganic substances but also amino acids generated during the decomposition of organic substances, and that these amino acids have immediate effects. In addition, it is known that amino acids promote the growth of microorganisms in the soil, and the soil becomes fertile due to the activity of the microorganisms. Therefore, in the method for producing a liquid fertilizer according to the present embodiment, a liquid fertilizer containing an amino acid can be produced by subjecting a marine waste to acetic acid fermentation with acetic acid contained in brewed vinegar and decomposing the protein into amino acids. . The proportion of amino acids contained in the liquid fertilizer according to the present embodiment is 5% to 15%, and it can be confirmed that this proportion increases as the period of the stationary step S4 increases. For example, when the standing step S4 was performed for 6 months, the amino acid was included at a rate of 12%. In addition, the ratio in which an amino acid is contained in liquid fertilizer should just be at least 5% from the result of the growth test of a plant, More preferably, it is 10% or more.
以上、本発明の実施形態について説明したが、本発明は前記実施形態には限定されない。例えば、各製造過程に必要な時間は、加温温度などに応じて異なるため、水産廃棄物が所望の状態になるように適宜変更することができる。 As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, since the time required for each manufacturing process varies depending on the heating temperature and the like, it can be appropriately changed so that the marine waste is in a desired state.
Ｓ１ 破砕工程
Ｓ２ 添加工程
Ｓ３ 加温工程
Ｓ４ 静置工程
Ｓ５ 抜取り工程
S1 crushing process S2 addition process S3 heating process S4 stationary process S5 sampling process
Claims (1)
ｐＨが５．０〜５．５となるように水産廃棄物に醸造酢を加える添加工程と、
前記添加工程で醸造酢を加えた水産廃棄物を２５℃ないし４２℃で温める加温工程と、
前記加温工程で温めた水産廃棄物が液体と個体に分離するまで３ヶ月以上常温で静かに置いて前記液体のｐＨを５．０〜７．５とする静置工程とを有することを特徴とする液体肥料の製造方法。 A method for producing a liquid fertilizer using aquatic waste as a raw material, having a pH of 5.0 to 7.5 and having a weakly acidic to neutral property and containing at least 5% of amino acids,
an addition step of adding brewed vinegar to the marine waste so that the pH is 5.0 to 5.5 ;
A heating step of warming the marine waste to which brewing vinegar has been added in the addition step at 25 ° C. to 42 ° C . ;
A stationary step of setting the pH of the liquid to 5.0 to 7.5 by gently placing it at room temperature for 3 months or more until the marine waste heated in the heating step is separated into a liquid and a solid. A method for producing liquid fertilizer.
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