JPH0535714B2 - - Google Patents
Info
- Publication number
- JPH0535714B2 JPH0535714B2 JP61162752A JP16275286A JPH0535714B2 JP H0535714 B2 JPH0535714 B2 JP H0535714B2 JP 61162752 A JP61162752 A JP 61162752A JP 16275286 A JP16275286 A JP 16275286A JP H0535714 B2 JPH0535714 B2 JP H0535714B2
- Authority
- JP
- Japan
- Prior art keywords
- fermentation
- tank
- human waste
- air
- sawdust
- 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.)
- Expired - Fee Related
Links
- 238000000855 fermentation Methods 0.000 claims description 38
- 230000004151 fermentation Effects 0.000 claims description 38
- 239000010800 human waste Substances 0.000 claims description 20
- 239000003337 fertilizer Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 10
- 235000007164 Oryza sativa Nutrition 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000010903 husk Substances 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 235000009566 rice Nutrition 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 229920005610 lignin Polymers 0.000 claims description 6
- 239000010802 sludge Substances 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 4
- 239000005416 organic matter Substances 0.000 claims description 4
- 238000009264 composting Methods 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000007664 blowing Methods 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 7
- 241000209094 Oryza Species 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000002361 compost Substances 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012851 eutrophication Methods 0.000 description 3
- 235000003642 hunger Nutrition 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000037351 starvation Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical group N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000005070 ripening Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 244000000000 soil microbiome Species 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Fertilizers (AREA)
- Activated Sludge Processes (AREA)
- Treatment Of Sludge (AREA)
Description
［産業上の利用分野］
本発明は、人や家畜の排せつした屎尿をコンポ
スト化して肥料として再生利用の可能な処理法に
関する。
［発明の目的］
（従来の技術）
一般に、屎尿のコンポスト化に当たつては、固
液を分離して、その液体分を活性汚泥法で処理す
る方法が主として採られているが、この方法は
BODの改善が主体であつて窒素、燐酸等の処理
効率は十分でなく、その廃棄水を放流すると富栄
養化の問題を惹起し、且つその処理装置も高価で
ある等難点の多いものであつた。
従つて、屎尿を固液分離せず、そのまま処理す
ることはコンポスト化として理想の形態であり、
そして、これを肥料として再利用することが富栄
養化等の汚染問題を回避し得て、最も望ましいと
されてきた。
しかし、従来これが実現されないのは、一つに
屎尿を完全堆肥化することが難しく、もし未熟の
まま施肥すると、微生物が土中の窒素分を逆吸収
し、農作物自体が窒素飢餓となる等の問題を惹起
するからである。
そこで、従来この完熟肥料化を促す一手段とし
て、おが屑等を糞中に投入し、水分調整により発
酵を促す方法が知られある程度の効果を挙げてい
る。
しかし、そのおが屑の投入する手段にも欠点が
有り、もし投入したおが屑自体が完全堆肥化され
ないと前記未熟堆肥が起こす窒素飢餓の問題をさ
らに助長し、深刻化させてしまうのである。そし
て、事実おが屑はリグニン等の難分解質を多く含
み、その処理が困難であり、従つておが屑の投入
量には一定の限界が生じるものとなり、前記水分
調整機能も満足な効果の期待できるものではなか
つた。さらに、完全肥料化には通常半年程度の非
常な長期間を要し、実用化にも経済上の問題があ
る等の諸々の欠点を有するものであつた。
（本発明の解決しようとする問題点）
本発明は、上記実情に鑑みてなされたもので、
第一に屎尿を固液分離せずそのまま処理し肥料化
する形態のコンポスト化処理を目的とし、第二に
その具体化にあつて上記おが屑等利用の技術に着
目しつつこれを改良し、微生物相の遷移に応じて
適切な発酵条件を段階的に組み合わせて相互の連
関を図ることにより発酵効率を向上させ、上記欠
点となるリグニン等の難分解質の分解及び発酵の
短期化を図つたものである。
［発明の構成］
以下工程順に本発明の方法を説明する。
(1) 予備発酵
屎尿収集物を、主として人糞を対象とした糞と
尿の混合物のまま（含水率的95％）、まず投入槽
に貯留させた後、沈砂池を通してスクリーン等で
荒い濾過を行ない、次いで予備発酵槽内に流入さ
せる。
該槽内には、訓化した活性汚泥を予め含ませ、
且つ底部から液中に溶融した有機物を分解消化さ
せるに必要な空気量を調整して泡状で送る。この
好気性菌発酵を促す為の消化反応は、十分なる酸
素と40℃程度の高温条件とが望ましいが、過剰空
気の送付は逆に冷却を惹起するので、596〜745
Kg／m3程度の酸素、即ち空気量に換算して0.16〜
２m3／minに調整し、約５日間発酵させる。
本槽内において、予め投与した活性汚泥の好気
性菌が作用し、液肥中の有機性成分を炭酸ガス、
アンモニア等に分解する。しかし、固体分の分解
は未だ行なわれない。
(2) 高温発酵
次ぎに、予備発酵の終了した屎尿を、定量回分
的に撹拌発酵槽に移し、次ぎの条件下で高温発酵
を促す。
即ち、
イ おが屑、もみ殻を用意し、その含水率を15％
以下になるまで乾燥させ、
ロ その乾燥後のおが屑、もみ殻混合物を、屎尿
投後のＣ／Ｎ比が25〜30となる割合で配合し、
（おが屑10〜50wt％：もみ殻50〜90wt％）
ハ 該混合物を、屎尿100に対し30％〜40％wtの
割合で投入し、つまり見掛け水分を62％〜68％
とし、液相の屎尿をゲル状相に相状態を転換さ
せ、固体内部まで空気の侵入可能な相構造と
し、
ニ 該撹はん発酵槽には、空気混合の為のロータ
リー型の撹拌羽根を設けると共に、その槽内底
部から発酵酸素供給のため必要空気量を供給
し、約10日間の高温発酵を促す。
該槽内において、当初液相の屎尿が乾燥おが屑
等の投入でゲル状相に転換するため固体内部まで
必要酸素の供給が可能となり、かつ添加おが屑等
のＣ／Ｎ比を25〜30とすれば微生物は炭素(C)をエ
ネルギーに窒素(N)を利用して細胞形成を行なうの
で、最も適した増殖環境とし得る。そして、前記
予備発酵で約70℃に昇温した温度環境を利用し
て、直ちに高温菌の発酵発熱が開始し、65℃−70
℃まで昇温し、且つこの発酵でNH4−Ｎの発生
が衰弱しNO3−Ｎの発生に変換される。その際、
撹拌羽根による切り返し混合と、槽底部からの空
気供給により十分に酸素が満たされ、前記予備発
酵では不可能であつた固体分の分解発酵が行なわ
れる。その発酵に要する期間も予備発酵での昇温
を利用し10日程度と短期間である。但し、おが屑
等に含まれるリグニン等の難分解質の分解が残
る。
(3) 熟成
さらに熟成の発酵に移り、上記高温発酵の終了
した屎尿を熟成槽に移行させ、堆積させた屎尿に
槽内の底部より空気を供給し、35〜40℃程度の温
度環境を保ちつつ、約30日間発酵を促す。
該槽内で、前記リグニン等の難分解質が中温菌
の働きで分解され、且つもし高温発酵で残留した
アンモニア性窒素が存すれば中温菌がこれを分解
し硝酸性窒素に分解し、Ｃ／Ｎ比を15以下に完熟
化し、肥料化した場合に土中の窒素不足等の弊害
を防止し得る。
尚、上記予備発酵、高温発酵、及び熟成の各発
酵過程で生じた炭酸ガス、アンモニア等のガス体
は、吸引ダクトにより土壌槽に導き、土壌菌の生
物的化学作用で脱臭処理して、外部には放散させ
ないものとする。
（実施例）
屎尿1.8klを収集し、沈砂池を経て、予備処理
槽内に貯留させ、槽内底部より、666Kg／ｍの空
気を供給し、約40℃で５日間発酵させた、次い
で、高温発酵槽に移行させ、おが屑840Kg、もみ
殻840Kgを含水率７％に乾燥させた混合物を投入
し（Ｃ／Ｎ比＝30）0.179Kg／minの空気を槽底
部より供給し且つ槽内撹拌羽根で撹拌しつつ、℃
で日間発酵させた。さらに、第３次処理槽に移行
させ、槽内底部より空気を供給し、約32℃で日間
発酵完熟させた。
この結果、下記の屎尿の性状と、肥料としての
成分率を得た。
[Industrial Application Field] The present invention relates to a processing method that enables human and livestock excretion to be composted and reused as fertilizer. [Purpose of the invention] (Prior art) Generally, when composting human waste, a method is mainly adopted in which solid and liquid are separated and the liquid is treated using an activated sludge method. teeth
The main objective is to improve BOD, and the treatment efficiency of nitrogen, phosphoric acid, etc. is not sufficient, and discharging the waste water causes problems of eutrophication, and the treatment equipment is expensive. Ta. Therefore, processing human waste as it is without solid-liquid separation is the ideal form of composting.
Reusing this as fertilizer has been considered the most desirable since it can avoid pollution problems such as eutrophication. However, one of the reasons why this has not been achieved in the past is that it is difficult to completely compost human waste, and if fertilizer is applied while it is still immature, microorganisms will absorb the nitrogen in the soil and the crops themselves will become nitrogen starved. This is because it causes problems. Therefore, as a conventional method for promoting the conversion into fully ripened fertilizer, a method has been known in which sawdust or the like is added to the feces to promote fermentation by adjusting the moisture content, and this method has been effective to some extent. However, the method of introducing the sawdust has its drawbacks, and if the introduced sawdust itself is not completely composted, the problem of nitrogen starvation caused by the immature compost will be further exacerbated and aggravated. In fact, sawdust contains a large amount of difficult-to-decompose substances such as lignin, which makes it difficult to process.Therefore, there is a certain limit to the amount of sawdust that can be input, and the water adjustment function described above cannot be expected to have a satisfactory effect. It wasn't. Furthermore, it has various drawbacks, such as it usually takes a very long time, about half a year, to make it into a complete fertilizer, and there are economical problems in putting it into practical use. (Problems to be solved by the present invention) The present invention has been made in view of the above circumstances.
Firstly, we aim to compost human waste in the form of fertilizer by processing it as it is without solid-liquid separation.Secondly, in realizing this process, we will focus on the technology of using sawdust, etc. mentioned above, improve it, and develop microorganisms. The fermentation efficiency is improved by combining appropriate fermentation conditions in stages according to the phase transition and linking them to each other, thereby decomposing difficult-to-decompose substances such as lignin, which are the drawbacks mentioned above, and shortening the fermentation time. It is. [Structure of the Invention] The method of the present invention will be explained below in order of steps. (1) Prefermentation The collected human waste is stored as a mixture of feces and urine (moisture content: 95%) in an input tank, and then passed through a settling tank and subjected to rough filtration with a screen, etc. and then flowed into the pre-fermenter. The tank is pre-filled with activated sludge,
In addition, the amount of air necessary to decompose and digest the organic matter molten in the liquid is adjusted from the bottom and sent in the form of foam. For the digestive reaction to promote this aerobic bacterial fermentation, it is desirable to have sufficient oxygen and high temperature conditions of about 40°C, but supplying excess air will cause cooling, so
Kg/ m3 of oxygen, i.e. 0.16~ in terms of air volume
Adjust to 2 m 3 /min and ferment for about 5 days. In this tank, aerobic bacteria in the activated sludge that has been administered in advance acts to convert organic components in the liquid fertilizer into carbon dioxide gas and
Decomposes into ammonia, etc. However, the decomposition of solids has not yet been carried out. (2) High-temperature fermentation Next, the human waste that has undergone pre-fermentation is transferred in quantitative batches to a stirring fermenter, and high-temperature fermentation is promoted under the following conditions. That is, (a) Prepare sawdust and rice husks and reduce their moisture content to 15%.
(2) Blend the dried sawdust and rice husk mixture in a ratio such that the C/N ratio after dumping the human waste is 25 to 30,
(10 to 50 wt% of sawdust: 50 to 90 wt% of rice husks) C. The mixture is added at a ratio of 30 to 40% wt to 100 human waste, which means that the apparent moisture is 62 to 68%.
The liquid phase of human waste is transformed into a gel phase, creating a phase structure that allows air to penetrate into the solid interior. (d) The stirring fermenter is equipped with a rotary type stirring blade for air mixing. At the same time, the necessary amount of air is supplied from the bottom of the tank to supply oxygen for fermentation, promoting high temperature fermentation for about 10 days. In this tank, the human waste, which is initially in a liquid phase, is converted to a gel phase by adding dried sawdust, etc., so that the necessary oxygen can be supplied to the inside of the solid, and the C/N ratio of the added sawdust, etc. is set to 25 to 30. Since microorganisms form cells using carbon (C) as energy and nitrogen (N), this can be the most suitable growth environment. Using the temperature environment raised to approximately 70°C in the preliminary fermentation, the thermophilic bacteria immediately begin to generate fermentation heat, and the temperature rises to 65°C - 70°C.
The temperature is raised to 0.degree. C., and during this fermentation, the generation of NH4-N is attenuated and converted to the generation of NO3-N. that time,
Oxygen is sufficiently filled by the mixing by the stirring blade and the supply of air from the bottom of the tank, and the decomposition and fermentation of the solids, which was impossible in the preliminary fermentation, is carried out. The period required for fermentation is also short, about 10 days, using the temperature increase during preliminary fermentation. However, the decomposition of difficult-to-decompose substances such as lignin contained in sawdust remains. (3) Maturation Moving on to further fermentation, the human waste that has undergone the high-temperature fermentation is transferred to the aging tank, and air is supplied to the accumulated human waste from the bottom of the tank to maintain a temperature environment of about 35 to 40 degrees Celsius. This will encourage fermentation for about 30 days. In this tank, the hard-to-decompose substances such as lignin are decomposed by the action of mesophilic bacteria, and if there is ammonia nitrogen remaining from high-temperature fermentation, the mesophilic bacteria decompose it into nitrate nitrogen, and C /N ratio of 15 or less, and when used as fertilizer, it can prevent adverse effects such as nitrogen deficiency in the soil. Gases such as carbon dioxide and ammonia generated during the pre-fermentation, high-temperature fermentation, and ripening processes are led to the soil tank through a suction duct, deodorized by the biological chemical action of soil bacteria, and then transported to the outside. shall not be dissipated. (Example) 1.8 kl of human waste was collected, passed through a settling tank, and stored in a pretreatment tank. 666 Kg/m of air was supplied from the bottom of the tank, and fermented at about 40°C for 5 days. A mixture of 840 kg of sawdust and 840 kg of rice husks dried to a moisture content of 7% was introduced into a high-temperature fermentation tank (C/N ratio = 30), and 0.179 kg/min of air was supplied from the bottom of the tank while stirring inside the tank. While stirring with a blade,
It was fermented for a day. Furthermore, it was transferred to a tertiary treatment tank, where air was supplied from the bottom of the tank, and fermentation was completed at approximately 32°C for one day. As a result, the following properties of human waste and component ratio as fertilizer were obtained.
【表】【table】
【表】
［発明の効果］
本発明は以上のようで、
(イ) 予備発酵、高温発酵、及び熟成発酵を段階的
に分設させることで、夫々に液肥、固形肥、及
び難分解質の発酵分解を図るので、固液を分離
することなく一体に処理が可能となつた。即
ち、固液分離の装置が不要で、且つ放流される
処理液が皆無であるから、従来放流水の処理に
要していた膨大な手間と装置を省略できること
で経済的効果が大で、その放流水が惹起する富
栄養化等の問題も解消することができる。
(ロ) 又、上記各工程の相互連関により、微生物の
相の遷移による発酵を極めて効率的に促すこと
ができる。即ち、予備処理の活性汚泥処理は、
液肥中に占める有機物の発酵分解を促すと共
に、発酵熱による昇温で、後の高温菌が発酵に
移る際に直ちに高温発酵を出発させることがで
きる。又、この高温菌の作用は後の熟成工程で
の温度管理を容易とし、全体で通常半年程度か
かる完熟堆肥の生成を約1.5月に短縮化するこ
とができる。
(ハ) おが屑、もみ殻を乾燥処理して水分調整し且
つそのＣ／Ｎ比を25〜30程度としたもので、微
生物の細胞形成が活発で、且つ固形分の内部ま
で酸素が供給され、高温菌の水分、酸素、温度
の各条件が最適化し、固形分の内部まで高温菌
の増殖発酵が速やかに進み、約10日間でアンモ
ニア性窒素の９割以上が硝酸性窒素に変換され
る。
そしてその活発な発酵作用により、おが屑、
もみ殻を比較的多量に投入しても窒素飢餓の問
題が生じないので、従来制限下で不十分であつ
たおが屑、もみ殻の水分調整機能を十二分に発
揮させることができる。
(ニ) さらに、熟成処理によつて、肥料化する際に
悪影響のあるリグニン等の難分解質も分解され
て屎尿は完全腐熟化し、土中に施肥した際に土
中窒素飢餓を惹起することは皆無となり、土壌
改良材として貫重な有機肥料となる。[Table] [Effects of the Invention] The present invention is as described above. (a) By separating preliminary fermentation, high-temperature fermentation, and aging fermentation in stages, liquid fertilizer, solid fertilizer, and difficult-to-decompose substances can be produced respectively. Since fermentation and decomposition are aimed at, it has become possible to process the solid and liquid together without separating them. In other words, since there is no need for solid-liquid separation equipment and no treated liquid is discharged, it has a great economic effect by omitting the enormous amount of labor and equipment that was conventionally required for treating discharged water. Problems such as eutrophication caused by discharged water can also be resolved. (b) Furthermore, due to the mutual interaction of each of the above steps, fermentation due to phase transition of microorganisms can be promoted extremely efficiently. In other words, the pre-treatment activated sludge treatment is
In addition to promoting the fermentation and decomposition of organic matter in the liquid fertilizer, the temperature is raised by the heat of fermentation, so that high-temperature fermentation can be started immediately when the later thermophilic bacteria move on to fermentation. In addition, the action of these thermophilic bacteria facilitates temperature control during the subsequent ripening process, making it possible to shorten the total production time of fully ripened compost, which normally takes about half a year, to about 1.5 months. (c) Sawdust and rice husks are dried to adjust their moisture content and have a C/N ratio of about 25 to 30, where microbial cell formation is active and oxygen is supplied to the inside of the solid content. The moisture, oxygen, and temperature conditions for the thermophilic bacteria are optimized, and the growth and fermentation of the thermophilic bacteria quickly progresses to the inside of the solid content, converting more than 90% of the ammonia nitrogen into nitrate nitrogen in about 10 days. Due to its active fermentation, sawdust,
Even if a relatively large amount of rice husk is input, the problem of nitrogen starvation does not occur, so the moisture regulating function of sawdust and rice husk, which was insufficient under conventional restrictions, can be fully exerted. (iv) Furthermore, due to the aging process, difficult-to-decompose substances such as lignin, which have a negative effect on turning into fertilizer, are decomposed and the human waste becomes completely rotten, causing nitrogen starvation in the soil when fertilizer is applied to the soil. It becomes a comprehensive organic fertilizer as a soil conditioner.
図面は本発明の実施例を示すもので、第１図は
本発明のフローシート図である。
The drawings show embodiments of the present invention, and FIG. 1 is a flow sheet diagram of the present invention.
Claims (1)
貯留させ、該槽内底部に0.16〜２m3／minの必要
空気量を送り40℃程度に液温の上昇を図り液肥中
の有機物を活性汚泥で分解する予備発酵を行な
い、 次いで、おが屑ともみ殻との混合物をその含水
率が15％以下になるまで乾燥させ、該乾燥物を屎
尿中への投入後のＣ／Ｎ比が25〜30となる割合で
配合した後、屎尿100に対し35wt％〜45％の割合
で投入し、撹拌羽根による撹拌とその槽内底部か
らの空気送風による酸素供給下で固形分の分解を
促す高温発酵を行ない、 さらに、堆積させた屎尿に槽内の底部より空気
を供給し、35〜40℃の温度環境でリグニン等の難
分解質及び残留有機物の分解を促す熟成発酵を行
なうことを特徴とする屎尿のコンポスト化処理
法。[Claims] 1. The collected human waste is stored as a solid-liquid mixture in a pre-fermentation tank, and a required amount of air of 0.16 to 2 m 3 /min is sent to the bottom of the tank to raise the liquid temperature to about 40°C. Prefermentation is carried out to decompose the organic matter in the liquid fertilizer with activated sludge, and then the mixture of sawdust and rice husks is dried until its moisture content becomes 15% or less, and the dry matter is added to the human waste. /N ratio of 25 to 30, and then added at a ratio of 35 wt% to 45% to 100 parts of human waste, and the solid content was reduced by stirring with a stirring blade and supplying oxygen by air blowing from the bottom of the tank. Furthermore, air is supplied from the bottom of the tank to the accumulated human waste, and aging fermentation is carried out in a temperature environment of 35 to 40°C to promote the decomposition of difficult-to-decompose substances such as lignin and residual organic matter. A method for composting human waste, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61162752A JPS6321274A (en) | 1986-07-10 | 1986-07-10 | Excrement composting treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61162752A JPS6321274A (en) | 1986-07-10 | 1986-07-10 | Excrement composting treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6321274A JPS6321274A (en) | 1988-01-28 |
| JPH0535714B2 true JPH0535714B2 (en) | 1993-05-27 |
Family
ID=15760580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61162752A Granted JPS6321274A (en) | 1986-07-10 | 1986-07-10 | Excrement composting treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6321274A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06312199A (en) * | 1992-08-31 | 1994-11-08 | Gunma Hoola Kk | Digestion treatment method of organic concentrated sludge by combination of traveling type stirring machine and wood-based bio-agent |
| JP3036753U (en) * | 1996-10-14 | 1997-05-02 | 正行 中家 | Microbial decomposition treatment toilet tank |
| JPH10151433A (en) * | 1996-11-25 | 1998-06-09 | Hoei Bussan Kk | Fermentation stirring device for manure etc. |
-
1986
- 1986-07-10 JP JP61162752A patent/JPS6321274A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6321274A (en) | 1988-01-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |