JPH0425079B2 - - Google Patents
Info
- Publication number
- JPH0425079B2 JPH0425079B2 JP12771286A JP12771286A JPH0425079B2 JP H0425079 B2 JPH0425079 B2 JP H0425079B2 JP 12771286 A JP12771286 A JP 12771286A JP 12771286 A JP12771286 A JP 12771286A JP H0425079 B2 JPH0425079 B2 JP H0425079B2
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen sulfide
- reaction tank
- tank
- methane
- bacteria
- 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 - Lifetime
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 66
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 230000029553 photosynthesis Effects 0.000 claims description 24
- 238000010672 photosynthesis Methods 0.000 claims description 24
- 238000000855 fermentation Methods 0.000 claims description 23
- 230000004151 fermentation Effects 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 16
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- 241000894006 Bacteria Species 0.000 claims description 13
- 239000002351 wastewater Substances 0.000 claims description 12
- 230000000243 photosynthetic effect Effects 0.000 claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 239000010800 human waste Substances 0.000 claims description 5
- 239000010842 industrial wastewater Substances 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 230000002194 synthesizing effect Effects 0.000 claims description 2
- 230000002503 metabolic effect Effects 0.000 claims 1
- 230000002062 proliferating effect Effects 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 12
- 239000011593 sulfur Substances 0.000 description 12
- 238000011282 treatment Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 229910001868 water Inorganic materials 0.000 description 9
- 230000001580 bacterial effect Effects 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 235000005985 organic acids Nutrition 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000191368 Chlorobi Species 0.000 description 2
- 241000190834 Chromatiaceae Species 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 235000012539 Bacterium linens Nutrition 0.000 description 1
- 244000177578 Bacterium linens Species 0.000 description 1
- -1 HS - Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000002699 waste material 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、有機物を多く含む廃水である下水、
屎尿、産業廃水等をメタン醗酵による嫌気性処理
を行なう廃水処理方法の改良に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to sewage, which is wastewater containing a large amount of organic matter;
This invention relates to the improvement of a wastewater treatment method that performs anaerobic treatment of human waste, industrial wastewater, etc. by methane fermentation.
従来、メタン醗酵は、屎尿、下水汚泥、高濃度
産業廃水に適用されているが、処理水として窒
素、リンを含む外、硫化水素に代表される硫黄の
還元物を多く含み、臭気を発生したり、生物に阻
害を与えたりする。そのため、下水処理場ではメ
タン醗酵の脱水後の絞り液を活性汚泥槽で再処理
している。屎尿処理では硝化、脱窒処理を行なう
必要がある。
Traditionally, methane fermentation has been applied to human waste, sewage sludge, and highly concentrated industrial wastewater, but the treated water contains not only nitrogen and phosphorus, but also a large amount of sulfur reduction products such as hydrogen sulfide, which generates odors. or cause harm to living organisms. Therefore, at sewage treatment plants, the squeezed fluid after dehydration from methane fermentation is reprocessed in activated sludge tanks. When processing human waste, it is necessary to perform nitrification and denitrification treatments.
然し、これらの後処理工程は、酸素を溶解する
ために動力が必要となること、還元性物質を酸化
するための酸素が必要となること、硫黄により生
物の増殖や代謝が阻害されること、生物を生育さ
せるために補助的な基質の添加が必要となること
といつた問題点を有している。 However, these post-treatment steps require power to dissolve oxygen, oxygen is required to oxidize reducing substances, and sulfur inhibits the growth and metabolism of organisms. It has problems such as the need to add an auxiliary substrate to grow organisms.
そこで、窒素成分を含む汚水を嫌気性処理工程
で処理した時に発生する硫化水素を硝化脱窒工程
で自栄養細菌を利用して脱窒することが提案され
ている（特公昭60−3876号公報参照）。 Therefore, it has been proposed to denitrify hydrogen sulfide generated when wastewater containing nitrogen components is treated in an anaerobic treatment process using autotrophic bacteria in a nitrification-denitrification process (Japanese Patent Publication No. 3876/1983). reference).
然し、特公昭60−3876号公報に係る発明は、脱
窒する点に於て優れているが、硝化工程を含むた
めに酸素を溶解するための動力が必要となる。
又、汚水中のリンを除去することが出来ず、而
も、補助的な基質を必要とする場合がある等の不
具合があつた。
However, although the invention disclosed in Japanese Patent Publication No. 60-3876 is superior in denitrification, it requires power to dissolve oxygen because it includes a nitrification step.
In addition, there were other problems such as the inability to remove phosphorus from wastewater and the need for an auxiliary substrate.
本発明は斯かる従来の問題点を解決するために
為されたもので、その目的は、嫌気性下で光合成
反応を行ない硫化水素を硫酸へ転換する紅色硫黄
細菌や緑色硫黄細菌の働きにより生物細胞材料と
して除去することにより脱窒とリンの除去を行な
うことにある。
The present invention was made to solve these conventional problems, and its purpose is to improve the production of living organisms through the action of purple sulfur bacteria and green sulfur bacteria, which carry out photosynthetic reactions under anaerobic conditions and convert hydrogen sulfide into sulfuric acid. The purpose is to denitrify and remove phosphorus by removing it as cell material.
本発明に係る廃水の処理方法は、下水、屎尿、
産業廃水等を、メタン醗酵槽に供給し、ここでメ
タン醗酵し、硫化水素を含むメタンガスと処理液
とに分離し、処理液を光合成反応槽に供給すると
共に、硫化水素を含むメタンガスを光合成反応槽
へ吹き込み、光合成反応槽に於て、嫌気性下で光
を照射することによつて、紅色硫酸細菌又は緑色
硫酸細菌の一種若しくは数種を優先的に培養し、
この細菌の代謝、増殖活動により、光合成反応を
行い、硫化水素を硫酸に転換すると共に、ATP
を合成することによつて、遊離リン酸を細胞内に
固定化し、窒素、リンを除去するものである。
The wastewater treatment method according to the present invention includes sewage, human waste,
Industrial wastewater is supplied to a methane fermentation tank, where methane is fermented, separated into methane gas containing hydrogen sulfide and a treated liquid, and the treated liquid is supplied to a photosynthesis reaction tank, where methane gas containing hydrogen sulfide is subjected to photosynthesis reaction. By blowing into a tank and irradiating light under anaerobic conditions in a photosynthesis reaction tank, one or more types of purple sulfate bacteria or green sulfate bacteria are preferentially cultivated,
Through the metabolism and growth activities of this bacterium, photosynthetic reactions occur, converting hydrogen sulfide to sulfuric acid, and ATP
By synthesizing this, free phosphoric acid is immobilized within cells and nitrogen and phosphorus are removed.
又、本発明に於て、メタン醗酵による処理は、
廃水の有機物分解率が高く、処理水のCODcrの
80％以上が揮発性有機酸であり、有機物のメタン
への転換率が高く、処理液中の窒素に対する
CODの割合が10以下になるような廃水を処理す
るものとする。 In addition, in the present invention, the treatment by methane fermentation is
The organic matter decomposition rate of wastewater is high, and the CODcr of treated water is low.
More than 80% of the organic acids are volatile organic acids, and the conversion rate of organic matter to methane is high.
Wastewater shall be treated so that the COD ratio is less than 10.
更に、本発明に於て、メタン醗酵による処理
は、処理液中の全硫黄量が50mg／以上の濃度で
含まれる廃水を処理するものとする。 Furthermore, in the present invention, the treatment by methane fermentation is intended to treat wastewater in which the total amount of sulfur in the treatment liquid is contained in a concentration of 50 mg/or more.
更に、本発明に於て、メタン醗酵の処理水で懸
濁物質を多く含む場合は、沈降分離フイルタによ
り処理する。又、汚泥状のものは、凝集、脱水等
の処理を行なう。 Furthermore, in the present invention, if the treated water for methane fermentation contains a large amount of suspended solids, it is treated using a sedimentation separation filter. In addition, sludge-like material is subjected to treatments such as coagulation and dewatering.
又、本発明に於て、光合成を行なう光合成バイ
オリアクタに供給される液は、必要な場合は、沈
降分離フイルタにより処理するか、又は、汚泥状
のものは、凝集、脱水等の処理を行ない、比較的
透明になつたもので、少なくとも光が透過するも
のとする。 In addition, in the present invention, the liquid supplied to the photosynthetic bioreactor that performs photosynthesis is treated with a sedimentation separation filter, if necessary, or the liquid in the form of sludge is subjected to treatments such as coagulation and dehydration. , which is relatively transparent and allows at least light to pass through it.
本発明の光合成反応で除去される有機物は、揮
発性有機酸の中でも酢酸がその主なものである。
硫化水素と炭酸ガスと水より、細胞材料が合成さ
れる反応は次式で示される。 Among the volatile organic acids, acetic acid is the main organic substance removed in the photosynthetic reaction of the present invention.
The reaction in which cell materials are synthesized from hydrogen sulfide, carbon dioxide, and water is shown by the following equation.
これにより、アンモニア性窒素１モルを除去す
るのに必要な硫化水素の量は2.5モルとなる。 As a result, the amount of hydrogen sulfide required to remove 1 mole of ammonia nitrogen is 2.5 moles.
このように硫化水素を多量に必要とするため、
硫黄の含有量の少ない一般的廃水の場合、処理水
を前段のメタン醗酵槽に返送したり、前段のメタ
ン醗酵槽で発生したガスを光合成槽へ吹き込んだ
り、硫化物を添加したりする工夫をする。この場
合、発生ガス中の脱硫も同時に行なわれる。又、
紅色硫黄細菌や緑色硫黄細菌以外の嫌気性光合成
細菌を同一の反応槽内で培養することにより、除
去する。 Because a large amount of hydrogen sulfide is required in this way,
In the case of general wastewater with a low sulfur content, methods such as returning the treated water to the methane fermentation tank in the previous stage, blowing the gas generated in the methane fermentation tank in the previous stage to the photosynthesis tank, and adding sulfide are considered. do. In this case, desulfurization in the generated gas is also carried out at the same time. or,
Anaerobic photosynthetic bacteria other than purple sulfur bacteria and green sulfur bacteria are removed by culturing them in the same reaction tank.
又、光合成を行なうことにより細菌は、ATP
を合成するため、遊離リン酸を細胞内に固定す
る。よつて、リンの含有量は他の細菌に比してか
なり大きい。 Also, by photosynthesizing, bacteria produce ATP.
In order to synthesize free phosphate, it is fixed inside the cell. Therefore, the phosphorus content is quite large compared to other bacteria.
本発明に於ては、酸素溶解に必要なブロアー等
の動力は全く必要とせず、それに代わつて極めて
僅かの光源ですむ。又、これらの細菌は硫黄化合
物（H2S、HS-、Ｓ、S2O3、SO2- 4）に極めて強
い耐性を持つ。更に、光合成により炭酸塩
（HCO- 3、CO2- 3）等を同化して増殖に必要な有機
物を合成するため、補助的な有機物の添加を全く
必要としない。
In the present invention, there is no need for any power such as a blower necessary for dissolving oxygen, and instead, only a very small number of light sources are required. Furthermore, these bacteria have extremely strong resistance to sulfur compounds (H 2 S, HS - , S, S 2 O 3 , SO 2-4 ). Furthermore, since the organic matter necessary for growth is synthesized by assimilating carbonates (HCO - 3 , CO 2-3 ), etc. through photosynthesis, there is no need to add any auxiliary organic matter.
以下、本発明の実施例を図面に基づいて説明す
る。
Embodiments of the present invention will be described below based on the drawings.
第１図は一般的な廃液（硫黄の含有量が窒素の
含有量より小さい場合）の好適な処理フローを示
す。 FIG. 1 shows a preferred treatment flow for a typical waste liquid (where the sulfur content is lower than the nitrogen content).
先ず、廃水はメタン醗酵槽１に供給され、此処
で分解されてメタンガスと処理液に分離される。
次いで、処理液は固液分離器（消火汚泥のような
高濃度のものは脱水機等で処理する）２によつて
不溶性物質や菌体が分離される。そして、分離さ
れて比較的透明になつた液体は、光合成反応槽３
に供給される。 First, wastewater is supplied to the methane fermentation tank 1, where it is decomposed and separated into methane gas and treated liquid.
Next, insoluble substances and bacterial cells are separated from the treated liquid by a solid-liquid separator 2 (highly concentrated sludge such as fire extinguishing sludge is treated with a dehydrator or the like). The separated and relatively transparent liquid is then transferred to the photosynthesis reaction tank 3.
supplied to
光合成反応槽３は光源４を装備しており、反応
槽内に5000ux以上の照度を与えることができ
る。更に、メタン醗酵槽１で発生した消火ガス
は、ライン５を通つてデイフユーザ６から細泡と
して光合成反応槽３内に供給され、ガスの中の硫
化水素が液に溶解する。これにより、発生ガス中
の硫化水素が除去され、光合成反応槽３内の菌体
に付与される。この光合成反応槽３内を通り抜け
たガスは、ガス貯留槽１０に貯留され、エネルギ
ーとして利用される。 The photosynthesis reaction tank 3 is equipped with a light source 4, which can provide illuminance of 5000ux or more into the reaction tank. Furthermore, the extinguishing gas generated in the methane fermentation tank 1 is supplied from the diffuser 6 through the line 5 into the photosynthesis reaction tank 3 as fine bubbles, and the hydrogen sulfide in the gas is dissolved in the liquid. Thereby, hydrogen sulfide in the generated gas is removed and applied to the bacterial cells in the photosynthesis reaction tank 3. The gas that has passed through the photosynthesis reaction tank 3 is stored in a gas storage tank 10 and used as energy.
又、光合成反応槽３内では、細菌がATPを合
成して、遊離リン酸を細胞内に固定するため、リ
ンの除去が効果的に為される。 Furthermore, in the photosynthesis reaction tank 3, bacteria synthesize ATP and fix free phosphoric acid within the cells, so that phosphorus is effectively removed.
更に、光合成反応槽３により処理された処理水
は、固液分離槽７で菌体が分離され、一部は光合
成反応槽３へ返送され、余剰の菌体は別途処理さ
れる。液は更にSS等を除去する場合は砂濾過器
８で処理され、放流される。 Furthermore, the treated water treated by the photosynthesis reaction tank 3 has bacterial cells separated in a solid-liquid separation tank 7, a part of which is returned to the photosynthesis reaction tank 3, and excess bacteria are treated separately. The liquid is further treated with a sand filter 8 to remove SS and the like, and then discharged.
尚、硫黄の濃度が低い場合には、処理水返送ラ
イン９を設置し、光合成反応槽３に供給される硫
黄の濃度を窒素濃度の1/2以上に保つて置くこと
が望ましい。 In addition, when the concentration of sulfur is low, it is desirable to install a treated water return line 9 to maintain the concentration of sulfur supplied to the photosynthesis reaction tank 3 at 1/2 or more of the nitrogen concentration.
第２図は窒素濃度に比べて硫黄を多く含む廃水
を処理する場合の処理フローを示す。 FIG. 2 shows a processing flow when wastewater containing a higher concentration of sulfur than nitrogen is treated.
先ず、廃水はメタン醗酵槽２１に供給される。
このフローでは、メタン醗酵槽２１のガスをブロ
ワ２６でライン２５を介してデイフユーザ２７で
光合成反応槽２３に吹き込み、戻りのガスをライ
ン２８を介してメタン醗酵槽２１に吹き込んでそ
の撹拌に役立てる。メタン醗酵は硫化物の阻害を
受けるため、光合成反応槽２３で硫黄を除去する
ことによりメタン醗酵槽２１の硫黄濃度を低下す
ることができ、より効率の高いメタン醗酵を行な
うことができる。生成したメタンはメタン醗酵槽
２１に連結するガス貯留槽２１に貯留される。 First, wastewater is supplied to the methane fermentation tank 21.
In this flow, gas from the methane fermentation tank 21 is blown into the photosynthesis reaction tank 23 by a diffuser 27 via a line 25 using a blower 26, and the returned gas is blown into the methane fermentation tank 21 via a line 28 to be used for stirring. Since methane fermentation is inhibited by sulfides, the sulfur concentration in the methane fermentation tank 21 can be lowered by removing sulfur in the photosynthesis reaction tank 23, and more efficient methane fermentation can be performed. The generated methane is stored in a gas storage tank 21 connected to a methane fermentation tank 21.
尚、メタン醗酵槽３１で分離された処理液は、
固液分離液２２によつて不溶性物質や菌体が分離
され、液体は光合成反応槽２３に供給される。光
合成反応槽２３は閉塞されていると共に、光源２
４を装備しており、反応槽内に500ux以上の照
度を与えることができる。更に、光合成反応槽２
３により処理された処理水は、固液分離槽２９で
菌体が分離され、一部は光合成反応槽２３へ返送
され、余剰の菌体は別途処理される。液は更に
SS等を除去する場合は砂濾過器３０で処理され、
放流される。 The treated liquid separated in the methane fermentation tank 31 is
Insoluble substances and bacterial cells are separated by the solid-liquid separation liquid 22, and the liquid is supplied to the photosynthesis reaction tank 23. The photosynthetic reaction tank 23 is closed, and the light source 2
4 and can provide illuminance of 500ux or more inside the reaction tank. Furthermore, photosynthesis reaction tank 2
In the treated water treated in step 3, bacterial cells are separated in a solid-liquid separation tank 29, a part of which is returned to the photosynthetic reaction tank 23, and excess bacterial cells are processed separately. The liquid is further
When removing SS etc., it is processed with a sand filter 30,
It is released into the river.
実施例
合成廃水、BOD10000mg／、Ｔ−N200mg／
、Ｔ−S100mg／、Ｔ−P50mg／を第１図の
フローで処理したところ、メタン醗酵槽１の滞留
時間12hr、光合成処理槽３の滞留時間3hr程度で
処理した。この時、生成ガス中には、硫化水素は
検出されず、処理水のＴ−Ｎは５mg／以下、Ｔ
−Ｐも５mg／以下であつた。光合成槽３内には
紅色の細菌が500mg−VS／程度得られた。Example Synthetic wastewater, BOD 10000mg/, T-N 200mg/
, T-S 100 mg/, and T-P 50 mg/ were treated according to the flow shown in FIG. 1, and the residence time in the methane fermentation tank 1 was about 12 hours, and the residence time in the photosynthesis treatment tank 3 was about 3 hours. At this time, no hydrogen sulfide was detected in the generated gas, and the T-N of the treated water was less than 5 mg/T.
-P was also less than 5 mg/. Approximately 500 mg-VS/red bacteria were obtained in photosynthesis tank 3.
以上のように本発明は、メタン醗酵と硫黄を硫
酸に転換する嫌気性光合成を主体と為す光合成反
応を組み合わせることにより、有機物をメタンと
して回収するだけでなく、硫黄による阻害を防
ぎ、硫化水素を硫酸に転換し、窒素、リンを除去
するといつた非常に有効な廃水処理法である。
As described above, the present invention not only recovers organic matter as methane by combining methane fermentation with a photosynthetic reaction mainly consisting of anaerobic photosynthesis that converts sulfur into sulfuric acid, but also prevents inhibition by sulfur and generates hydrogen sulfide. This is a very effective wastewater treatment method that converts it into sulfuric acid and removes nitrogen and phosphorus.
第１図及び第２図は本発明の処理フローを示す
図である。
１，２１……メタン醗酵槽、２，７，２２，２
９……固液分離器、３，２３……光合成反応槽、
４，２４……光源、５，９，２５，２８……ライ
ン、６，２７……デイフユーザ、８，３０……砂
濾過器、１０，３１……ガス貯留槽。
1 and 2 are diagrams showing the processing flow of the present invention. 1, 21...Methane fermentation tank, 2, 7, 22, 2
9...Solid-liquid separator, 3,23...Photosynthesis reaction tank,
4, 24... light source, 5, 9, 25, 28... line, 6, 27... diffuser, 8, 30... sand filter, 10, 31... gas storage tank.
Claims (1)
供給し、ここでメタン醗酵し、硫化水素を含むメ
タンガスと処理液とに分離し、処理液を光合成反
応槽に供給すると共に、硫化水素を含むメタンガ
スを光合成反応槽へ吹き込み、光合成反応槽に於
て、嫌気性下で光を照射することによつて、紅色
硫酸細菌又は緑色硫酸細菌の一種若しくは数種を
優先的に培養し、その細菌の代謝、増殖活動によ
り、光合成反応を行い、硫化水素を硫酸に転換す
ると共に、ATPを合成することによつて、遊離
リン酸を細胞内に固定化し、窒素、リンを除去す
ることを特徴とする廃水の処理方法。1 Sewage, human waste, industrial wastewater, etc. are supplied to a methane fermentation tank, where methane is fermented, separated into methane gas containing hydrogen sulfide and a treated liquid, and the treated liquid is supplied to a photosynthesis reaction tank, and hydrogen sulfide is By blowing the containing methane gas into a photosynthetic reaction tank and irradiating it with light under anaerobic conditions, one or more types of purple sulfuric acid bacteria or green sulfuric acid bacteria are preferentially cultivated, and the bacteria are grown. The metabolic and proliferative activities of the cells carry out photosynthetic reactions, converting hydrogen sulfide to sulfuric acid, and by synthesizing ATP, free phosphoric acid is immobilized within cells and nitrogen and phosphorus are removed. How to treat wastewater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61127712A JPS62282695A (en) | 1986-06-02 | 1986-06-02 | Treatment of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61127712A JPS62282695A (en) | 1986-06-02 | 1986-06-02 | Treatment of waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62282695A JPS62282695A (en) | 1987-12-08 |
| JPH0425079B2 true JPH0425079B2 (en) | 1992-04-28 |
Family
ID=14966840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61127712A Granted JPS62282695A (en) | 1986-06-02 | 1986-06-02 | Treatment of waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62282695A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4631043B2 (en) * | 2003-09-04 | 2011-02-16 | 国立大学法人 筑波大学 | Methane generation method and two-phase methane generator used therefor |
| JP2005288371A (en) * | 2004-04-01 | 2005-10-20 | Sumitomo Heavy Ind Ltd | Wastewater treatment method |
| JP2006035094A (en) * | 2004-07-27 | 2006-02-09 | Takashi Yamaguchi | Method and apparatus for treating high concentration waste water |
| JP2006212467A (en) * | 2005-02-01 | 2006-08-17 | National Institute Of Advanced Industrial & Technology | Organic waste treatment method |
| JP2007125490A (en) * | 2005-11-02 | 2007-05-24 | National Institute Of Advanced Industrial & Technology | Anaerobic ammonia treatment method |
| JP2013119073A (en) * | 2011-12-08 | 2013-06-17 | Toshiba Corp | Water treatment apparatus |
| CN103922488B (en) * | 2014-05-06 | 2016-01-20 | 常州市生活废弃物处理中心 | A kind of Concentrated liquid recharge technique |
| JP7262750B2 (en) * | 2018-02-28 | 2023-04-24 | 学校法人 創価大学 | Method for treating methane fermentation product |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55156588A (en) * | 1979-05-26 | 1980-12-05 | Nippon Carbide Ind Co Ltd | Method for culturing photosynthetic bacteria, and covering material using therefor |
| JPS6087835A (en) * | 1983-10-19 | 1985-05-17 | Atsuhiro Honda | Process and apparatus for desulfurization of methane fermentation gas using activated sludge |
-
1986
- 1986-06-02 JP JP61127712A patent/JPS62282695A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55156588A (en) * | 1979-05-26 | 1980-12-05 | Nippon Carbide Ind Co Ltd | Method for culturing photosynthetic bacteria, and covering material using therefor |
| JPS6087835A (en) * | 1983-10-19 | 1985-05-17 | Atsuhiro Honda | Process and apparatus for desulfurization of methane fermentation gas using activated sludge |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62282695A (en) | 1987-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100196556B1 (en) | Process for the treatment of water containing sulphur compounds | |
| Golueke et al. | Anaerobic digestion of algae | |
| EP0051888B1 (en) | Process for the purification of waste water and/or waste water sludge | |
| JP2005522399A (en) | Animal fertilizer treatment method and treatment apparatus | |
| JP3821011B2 (en) | Wastewater treatment method and treatment apparatus | |
| FR2586411A1 (en) | METHOD AND DEVICE FOR REDUCING THE TOXICITY OF SULPHITES | |
| KR100807219B1 (en) | Purification apparatus and method for high organic wastewater | |
| JPH0425079B2 (en) | ||
| KR100274534B1 (en) | Nitrogen and phosphorus removal methods with using fermented organic wastes | |
| JP3856218B2 (en) | Startup method of activated sludge treatment equipment | |
| CN110963658B (en) | Method for recycling livestock and poultry waste | |
| JP2003053309A (en) | Method of treating organic solid waste | |
| JP2511326B2 (en) | Method for treating organic wastewater with photosynthetic microorganisms | |
| JP2001232388A (en) | Method and apparatus for treating waste liquor | |
| JP3364018B2 (en) | Wastewater treatment method | |
| KR100350051B1 (en) | Removal of nitrogen and phosphorus by metabolism of aquatic plant and method for efficiently treating wastewater by using aquatic plant as electron donor in denitrification reaction | |
| JP2511325B2 (en) | Method for treating organic wastewater with photosynthetic microorganisms | |
| JP7262750B2 (en) | Method for treating methane fermentation product | |
| JP3444560B2 (en) | Aerobic nitrification denitrification method | |
| EP0634370A1 (en) | Process for treatment of nitrogenous effluents using sludges as substrate | |
| JP2603392B2 (en) | Treatment method for sulfur compound-containing water | |
| Toprak | Methane emissions originating from the anaerobic waste stabilization ponds case study: Izmir wastewater treatment system | |
| JP2000107787A (en) | Method for treating wastewater | |
| JPH0691289A (en) | Method for treating drainage containing dimethyl sulfoxide | |
| JPH11128985A (en) | Treatment of separated liquid by wet oxidizing treatment |