JP6750930B2 - Wastewater purification system - Google Patents
Wastewater purification system Download PDFInfo
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- JP6750930B2 JP6750930B2 JP2016195425A JP2016195425A JP6750930B2 JP 6750930 B2 JP6750930 B2 JP 6750930B2 JP 2016195425 A JP2016195425 A JP 2016195425A JP 2016195425 A JP2016195425 A JP 2016195425A JP 6750930 B2 JP6750930 B2 JP 6750930B2
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- 239000002351 wastewater Substances 0.000 title claims description 211
- 238000000746 purification Methods 0.000 title claims description 112
- 239000012528 membrane Substances 0.000 claims description 163
- 238000007254 oxidation reaction Methods 0.000 claims description 145
- 230000003647 oxidation Effects 0.000 claims description 141
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 123
- 238000000926 separation method Methods 0.000 claims description 115
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 89
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 84
- 239000010865 sewage Substances 0.000 claims description 50
- 238000011282 treatment Methods 0.000 claims description 50
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 27
- 239000007787 solid Substances 0.000 claims description 27
- 241000894006 Bacteria Species 0.000 claims description 26
- 238000005868 electrolysis reaction Methods 0.000 claims description 24
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- 238000001471 micro-filtration Methods 0.000 claims description 6
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- 238000001223 reverse osmosis Methods 0.000 claims description 6
- 238000000108 ultra-filtration Methods 0.000 claims description 5
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- 239000001301 oxygen Substances 0.000 description 10
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- 238000002347 injection Methods 0.000 description 9
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- 239000002699 waste material Substances 0.000 description 5
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 210000003608 fece Anatomy 0.000 description 4
- 239000008235 industrial water Substances 0.000 description 4
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- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000001954 sterilising effect Effects 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 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 3
- 239000003905 agrochemical Substances 0.000 description 3
- PPNXXZIBFHTHDM-UHFFFAOYSA-N aluminium phosphide Chemical compound P#[Al] PPNXXZIBFHTHDM-UHFFFAOYSA-N 0.000 description 3
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- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000007348 radical reaction Methods 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
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- 239000000852 hydrogen donor Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
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- 229920000388 Polyphosphate Polymers 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
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- 229920001222 biopolymer Polymers 0.000 description 1
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- 230000003197 catalytic effect Effects 0.000 description 1
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- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
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- 244000000010 microbial pathogen Species 0.000 description 1
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- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
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- 239000013049 sediment Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Biological Treatment Of Waste Water (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
- Physical Water Treatments (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Description
本発明は,汚排水浄化システムに関する。さらに詳しくいうと本発明は,糞便等の有機物の分解等が可能であって,故障しにくく分解能を向上させた,自己完結式の汚排水浄化システムに関する。 The present invention relates to a wastewater purification system. More specifically, the present invention relates to a self-contained sewage/wastewater purification system capable of decomposing organic matter such as feces and the like, which is less likely to malfunction and has improved resolution.
糞便などの有機物(以下,単に「有機物」という)を分解・処理することは,極めて重要である。
すなわち,有機物を放置すると環境的に不衛生な状態となるため,これを適切に処理する必要がある。有機物の処理として,下水に流すことが方法として考えられるが,下水設備が整っていない環境においては,下水に流すことはできない。このことから,そのような環境においては,有機物を,その場において,分解・処理する必要が生じる。
しかるに,下水設備が整っていない環境では,電気や水道などの他の設備も整っておらず,処理に必要なエネルギーや水の供給が十分でないことも多い。このことから,分解・処理を行う方法としては,できる限り自己完結的な方法であることが好ましい。例えば,特許文献1に,このような自己完結式の汚排水浄化システムに関する技術が開示されている。
It is extremely important to decompose and treat organic matter such as feces (hereinafter simply referred to as “organic matter”).
In other words, if organic matter is left untreated, it becomes environmentally unsanitary, so it is necessary to properly treat it. As a method of treating organic substances, it is possible to use sewage as a method, but in an environment where sewage facilities are not in place, it cannot be sewage. Therefore, in such an environment, it is necessary to decompose and process organic matter on the spot.
However, in an environment without sewage facilities, other facilities such as electricity and water are not available, and the energy and water required for treatment are often insufficient. From this, it is preferable that the method of disassembling and treating is as self-contained as possible. For example, Patent Document 1 discloses a technique related to such a self-contained wastewater purification system.
特許文献1に開示の技術(先行技術)は,本願発明者により開発された技術であり,システムのコンパクト化を図り,経済的な無給水の循環式トイレ装置を実現しうる点において有用な技術である。
しかるに,かかる先行技術にも課題が残されていた。すなわち,先行技術においては,図14に示すように,システムを構成する各槽が配管で繋がれている。そして,各槽間は比較的距離が空いていることから,輸送時や日常使用時における揺れや振動などにより,各槽間の位置関係にゆがみが生じることとなる。そのため,隙間を通して配置される配管にズレが生じ,あるいは,配管と槽との結合部分にヒビが生じることとなり,故障などにつながってしまう。このように,先行技術は,システム全体が,耐久性やメンテナンス性に乏しいという課題を有していた。
The technology disclosed in Patent Document 1 (prior art) is a technology developed by the inventor of the present application, and is useful in that the system can be made compact and an economical unpaid water circulating toilet device can be realized. Is.
However, there are still problems in such prior art. That is, in the prior art, as shown in FIG. 14, each tank constituting the system is connected by a pipe. Since the tanks are relatively distant from each other, the positional relationship between the tanks is distorted due to shaking or vibration during transportation or daily use. Therefore, the pipes arranged through the gap may be displaced or the joint between the pipe and the tank may be cracked, leading to a failure or the like. As described above, the prior art has a problem that the entire system is poor in durability and maintainability.
上記事情を背景として,本発明では,特許文献1の技術を進化させ,耐久性やメンテナンス性をより向上させるとともに,分解能を更に向上させた自己完結式の汚排水浄化システムの開発を課題とする。 Against the background described above, the present invention aims to develop the technique of Patent Document 1 to develop a self-contained wastewater purification system that further improves durability and maintainability, and further improves resolution. ..
発明者は,鋭意研究の結果,浄化処理などを行う各槽を近接配置して,配管の長さをできるだけ短縮するとともに,促進酸化槽を設けて分解能を更に向上させた汚排水浄化システムに想到し,発明を完成させたものである。 As a result of diligent research, the inventor has conceived a wastewater purification system in which the tanks for purification treatment are arranged in close proximity to each other to shorten the length of the pipe as much as possible, and an accelerated oxidation tank is provided to further improve the resolution. And completed the invention.
すなわち,本発明の汚排水浄化システムは,各槽を近接して配置することにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となる。結果として,本発明の汚排水浄化システムは,配管のズレや歪みが極めて生じにくい構造となっているものである。
加えて,本発明の汚排水浄化システムは,促進酸化槽において酸化による有機物の分解とともに,槽内に流入・発生した固形物を浮遊させ,スカムポンプによって返送する構成となっており,酸化による分解と固形物の浮遊分離を可能とするものである。
That is, in the sewage and wastewater purification system of the present invention, by arranging the tanks close to each other, it is possible to almost eliminate the positional deviation between the tanks and to shorten the length of the pipe as much as possible. .. As a result, the sewage purification system of the present invention has a structure in which displacement and distortion of piping are extremely unlikely to occur.
In addition, the sewage purification system of the present invention is configured such that the organic matter is decomposed by oxidation in the accelerated oxidation tank, and the solid matter that has flowed in/generated in the tank is suspended and returned by the scum pump. It enables the floating separation of solid matter.
本発明は,以下の構成からなる。
本発明の第一の構成は,
汚排水発生源から供給される汚排水を嫌気性菌により浄化処理する嫌気槽と,
前記嫌気槽で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽と,
前記無酸素槽で浄化処理された汚排水を硝化菌により浄化処理する好気槽と,
前記好気槽で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽と,
を備え,
これら各槽が他のいずれか又は複数の槽に近接して配置され,各槽における水位が同一に保持される汚排水浄化システムであって,
前記嫌気槽には,断続的に起動する水中ポンプが設置され,
前記水中ポンプには,他端が固液分離機の流入口に接続された第一移送管の一端が接続され,
前記固液分離機の流出口には,他端が前記無酸素槽内に位置する第二移送管の一端が接続され,
前記促進酸化槽には,スカムポンプが浮設され,
前記スカムポンプには,他端が前記嫌気槽内に位置する返送管の一端が接続されていることを特徴とする汚排水浄化システムである。
The present invention has the following configurations.
The first configuration of the present invention is
An anaerobic tank for purifying sewage discharged from a sewage generation source with anaerobic bacteria,
An oxygen-free tank for purifying the wastewater purified by the anaerobic tank with denitrifying bacteria,
An aerobic tank for purifying the wastewater purified by the oxygen-free tank with nitrifying bacteria;
An accelerated oxidation tank for purifying the wastewater purified by the aerobic tank by oxidative decomposition;
Equipped with
A wastewater purification system in which each of these tanks is placed in proximity to any one or more of the other tanks, and the water level in each tank is kept the same,
An intermittent submersible pump is installed in the anaerobic tank,
One end of a first transfer pipe, the other end of which is connected to the inlet of the solid-liquid separator, is connected to the submersible pump,
The solid-liquid separator has an outlet connected to one end of a second transfer pipe, the other end of which is located in the oxygen-free tank.
A scum pump is floated in the accelerated oxidation tank,
The scum pump is connected to one end of a return pipe whose other end is located inside the anaerobic tank.
本発明の第二の構成は,前記促進酸化槽における酸化分解が,過酸化水素の供給,高分子有機酸(高電子密度有機酸)の供給,オゾンの供給のいずれか又は複数を組み合わせることによって行われることを特徴とする第一の構成に記載の汚排水浄化システムである。
本発明の第三の構成は,前記高分子有機酸が,フルボ酸(fulvic acid),フミン酸(humic acid)のいずれか又は複数を少なくとも含むことを特徴とする第二の構成に記載の汚排水浄化システムである。
本発明の第四の構成は,前記促進酸化槽における酸化分解が,さらに電気分解を組み合わせることによって行われることを特徴とする第二又は第三の構成に記載の汚排水浄化システムである。
本発明の第五の構成は,前記促進酸化槽が,その中心部に電気分解槽を備えることを特徴とする第四の構成に記載の汚排水浄化システムである。
本発明の第六の構成は,マイクロバブル発生器をさらに備え,前記促進酸化槽の底部においてマイクロバブルを発生させることにより,固形物を浮遊させることを特徴とする第一から第五の構成に記載の汚排水浄化システムである。
本発明の第七の構成は,前記促進酸化槽と前記電気分解槽が,同心の円筒状に形成されていることを特徴とする第五又は第六の構成に記載の汚排水浄化システムである。
In the second configuration of the present invention, the oxidative decomposition in the accelerated oxidation tank is performed by any one or a combination of hydrogen peroxide supply, high molecular organic acid (high electron density organic acid) supply, and ozone supply. The wastewater purification system according to the first configuration is characterized by being performed.
In the third constitution of the present invention, the high molecular organic acid contains at least one or more of fulvic acid and humic acid, and the second constitution is the pollution. It is a wastewater purification system.
A fourth configuration of the present invention is the wastewater purification system according to the second or third configuration, wherein the oxidative decomposition in the accelerated oxidation tank is performed by further combining electrolysis.
A fifth structure of the present invention is the wastewater purification system according to the fourth structure, wherein the accelerated oxidation tank is provided with an electrolysis tank at the center thereof.
A sixth configuration of the present invention further comprises a micro-bubble generator, wherein the solid matter is suspended by generating micro-bubbles at the bottom of the accelerated oxidation tank. It is the wastewater purification system described.
A seventh structure of the present invention is the wastewater purification system according to the fifth or sixth structure, wherein the accelerated oxidation tank and the electrolysis tank are formed in a concentric cylindrical shape. ..
本発明の第八の構成は,
前記促進酸化槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,
前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,
前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,をさらに備えたことを特徴とする第一から第七の構成に記載の汚排水浄化システムである。
本発明の第九の構成は,前記生物活性炭槽で浄化処理された汚排水を膜分離により浄化処理する第二膜分離槽をさらに備えたことを特徴とする第八の構成に記載の汚排水浄化システムである。
本発明の第十の構成は,前記促進酸化槽で浄化処理された汚排水を生物処理により浄化処理する生物曝気槽と,前記生物曝気槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,をさらに備えたことを特徴とする第一から第七の構成に記載の汚排水浄化システムである。
本発明の第十一の構成は,生物活性炭槽で浄化処理された汚排水を貯める処理水槽と,前記処理水槽に貯められた処理水が移送され,当該処理水を膜分離により浄化処理する第二膜分離槽をさらに備えたことを特徴とする第十の構成に記載の汚排水浄化システムである。
本発明の第十二の構成は,前記第一膜分離槽ないし第二膜分離槽において用いられる膜が,MF膜(精密ろ過膜),UF膜(限外ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)のいずれか又は複数から選択されることを特徴とする第九又は第十一の構成に記載の汚排水浄化システムである。
The eighth configuration of the present invention is
A first membrane separation tank for purifying the wastewater purified by the accelerated oxidation tank by membrane separation;
An ozone contact tank for purifying the wastewater purified by the first membrane separation tank with ozone,
The biological waste carbon purification system according to any one of the first to seventh configurations, further comprising: a biological activated carbon tank that purifies the waste water purified by the ozone contact tank with biological activated carbon.
The ninth constitution of the present invention further comprises a second membrane separation tank for purifying the wastewater purified by the biological activated carbon tank by membrane separation, and the wastewater described in the eighth constitution. It is a purification system.
A tenth configuration of the present invention is a biological aeration tank for purifying the wastewater purified by the accelerated oxidation tank by biological treatment and a wastewater discharged by the biological aeration tank for purification by membrane separation. A first membrane separation tank, an ozone contact tank for purifying the wastewater purified by the first membrane separation tank with ozone, and an organism for purifying the wastewater purified by the ozone contact tank with biological activated carbon The wastewater purification system according to any one of the first to seventh configurations, further comprising an activated carbon tank.
An eleventh configuration of the present invention is that a treated water tank for storing dirty wastewater purified by a biological activated carbon tank and the treated water stored in the treated water tank are transferred to purify the treated water by membrane separation. The wastewater purification system according to the tenth configuration, further comprising a two-membrane separation tank.
In a twelfth configuration of the present invention, the membrane used in the first membrane separation tank or the second membrane separation tank is MF membrane (microfiltration membrane), UF membrane (ultrafiltration membrane), NF membrane (nanofiltration). Membrane) to RO membrane (reverse osmosis membrane) or a plurality of them are provided in the wastewater purification system according to the ninth or eleventh configuration.
本発明により,特許文献1の技術を進化させ,耐久性やメンテナンス性をより向上させるとともに,分解能をより向上させた自己完結式の汚排水浄化システムの提供が可能となった。 According to the present invention, it is possible to provide a self-contained sewage and effluent purification system that has evolved the technology of Patent Document 1 to further improve durability and maintainability and further improve resolution.
以下,好適な実施の形態を用いて本発明をさらに具体的に説明する。但し,下記の実施の形態は本発明を具現化した例に過ぎず,本発明はこれに限定されるものではない。 Hereinafter, the present invention will be described more specifically by using preferred embodiments. However, the following embodiments are merely examples embodying the present invention, and the present invention is not limited thereto.
<<I.汚排水浄化システムの概要>>
本発明の汚排水浄化システムは,浄化処理などを行う各槽を近接配置して,配管の長さをできるだけ短縮するとともに,促進酸化槽を設けて分解能を更に向上させたことを特徴とする。
<<I. Overview of dirty water purification system>>
The sewage and wastewater purification system of the present invention is characterized by arranging the respective tanks for purification treatment in close proximity to each other to shorten the length of the pipe as much as possible, and further providing an accelerated oxidation tank to further improve the resolution.
すなわち,本発明の汚排水浄化システムは,各槽を近接して配置することにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となるものである。
そして,これらの構成により,本発明の汚排水浄化システムは,配管のズレや歪みが極めて生じにくい構造となっているものである。
なお,本発明において,「近接して配置」とは,各槽間が接している,もしくは,移動や日常使用時における各槽間の位置のズレが故障に繋がらないほど近接していることとして定義される。
That is, in the sewage and wastewater purification system of the present invention, by arranging the tanks close to each other, it is possible to almost eliminate the positional deviation between the tanks and to shorten the length of the pipe as much as possible. It is a thing.
With these configurations, the sewage and wastewater purification system of the present invention has a structure in which pipe displacement and distortion are extremely unlikely to occur.
In the present invention, “arranged in close proximity” means that the respective tanks are in contact with each other, or that they are so close that the positional deviation between the respective tanks during movement or daily use does not lead to a failure. Is defined.
また,促進酸化槽は,酸化によって有機物を分解するとともに,槽内に流入・発生した固形物を浮遊させ,スカムポンプによって嫌気槽に返送する構成となっており,酸化による分解と固形物の浮遊分離を可能とするものである。 In addition, the accelerated oxidation tank is configured to decompose organic matter by oxidation, suspend the solid matter that flows into and is generated in the tank, and return it to the anaerobic tank by a scum pump. Decomposition by oxidation and floating separation of solid matter Is possible.
本発明の汚排水浄化システムは,必須の構成要素として,嫌気槽,無酸素槽,好気槽,促進酸化槽を備える。これらの必須の構成要素は,汚排水浄化システムにおいて,汚排水の分解処理とシステムからの固形物の除去を主として担う役割を果たすものである。
本発明の汚排水浄化システムにおいては,他の構成要素を備えることもできる。このような任意の構成要素としては,促進酸化槽に続いて配置される,第一膜分離槽,オゾン接触槽,生物活性炭槽,第二膜分離槽を挙げることができる。これらの構成要素を備えることにより,促進酸化槽までで浄化処理された汚排水についてさらに浄化処理を行い,法的規制をクリアできる程度,もしくは,飲料水や洗浄水として利用できる程度にまで浄化処理することが可能となるので,本発明の汚排水浄化システムの有用性を向上させることができるという効果が得られる。
The wastewater purification system of the present invention includes an anaerobic tank, anoxic tank, aerobic tank, and accelerated oxidation tank as essential components. These essential components play a major role in the wastewater purification system for decomposing wastewater and removing solids from the system.
The sewage and drainage purification system of the present invention may include other components. Examples of such optional components include a first membrane separation tank, an ozone contact tank, a biological activated carbon tank, and a second membrane separation tank, which are arranged following the accelerated oxidation tank. By including these components, the sewage and wastewater that has been purified by the accelerated oxidation tank is further purified so that it can pass legal regulations or be used as drinking water or wash water. Therefore, it is possible to improve the usefulness of the wastewater purification system of the present invention.
本発明において必須および任意の構成要素とされる各槽は,一つもしくは複数の他の槽と近接して配置される。また,各槽は,その上部もしくは底部で直接繋がっているか,もしくは,適宜,移送管ないし返送管が配置され,これにより,各槽間における処理水の移動が可能となっている。さらには,各槽における水位が同一に保持される構成となっている。そして,これらの構成によれば,重力に従った処理水の移動が可能となり,移動のための最小限のエネルギーで自己完結式の汚排水浄化システムとして機能させることが可能になるという効果が得られる。
なお,本発明において,「水位が同一に保持」とは,重力によって処理水の移動が生じうる程度の同一であればよく,この意味において,厳密に同一であることを必ずしも必要とするものではない。
Each tank, which is an essential and optional component in the present invention, is arranged in proximity to one or more other tanks. In addition, each tank is directly connected to the top or bottom of the tank, or a transfer pipe or a return pipe is appropriately arranged, whereby the treated water can be moved between the tanks. Furthermore, the water level is kept the same in each tank. Further, according to these configurations, it is possible to move the treated water according to gravity, and it is possible to function as a self-contained wastewater purification system with a minimum amount of energy for movement. To be
In the present invention, “holding the same water level” means that the water is the same to the extent that gravity can cause the treated water to move, and in this sense, it does not necessarily mean that the water is strictly the same. Absent.
本発明の汚染水浄化システムにおいては,これを種々の用途で使用することが可能である。
すなわち,図6などに例示されるように畜舎や簡易トイレなどにおける糞尿処理,簡易ハウスにおける糞尿ならびに生活排水処理など,有機物の分解に関わる種々の用途として用いることができる。
The polluted water purification system of the present invention can be used for various purposes.
That is, as illustrated in FIG. 6 and the like, it can be used for various applications related to decomposition of organic substances, such as manure treatment in livestock sheds and simple toilets, manure and domestic wastewater treatment in simple houses.
以下,本発明の汚排水浄化システムにおける各槽の構成等について説明する。
[嫌気槽]
嫌気槽は,汚排水発生源から供給される汚排水を嫌気性菌により浄化処理する機能を果たす。また,嫌気槽は,固液分離機に連結されており,これに原水あるいは処理水を供給することにより,システムからの固形物の除去を補助する機能を果たす。嫌気槽は,これらの機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
嫌気槽は,典型的には,図2,図3に示すように,円筒状の形状であって,内部に嫌気性菌を備えるとともに,水中ポンプとこれに接続された移送管により,固液分離機に連結された構成とすればよい。
The configuration of each tank in the wastewater purification system of the present invention will be described below.
[Anaerobic tank]
The anaerobic tank functions to purify the sewage discharged from the wastewater generation source by anaerobic bacteria. The anaerobic tank is connected to a solid-liquid separator, and by supplying raw water or treated water to the solid-liquid separator, the anaerobic tank fulfills a function of assisting removal of solids from the system. The anaerobic tank is not particularly limited as long as it fulfills these functions, and various configurations can be adopted.
The anaerobic tank typically has a cylindrical shape, as shown in FIGS. 2 and 3, and is provided with anaerobic bacteria therein, and a submersible pump and a transfer pipe connected to the anaerobic tank are used to form a solid-liquid tank. It may be configured to be connected to the separator.
[無酸素槽]
無酸素槽は,嫌気槽から供給される汚排水中の窒素成分を脱窒菌により浄化処理する機能を果たす。無酸素槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
無酸素槽は,典型的には,図2,図3に示すように,円筒状の形状であって,内部に脱窒菌を備えた構成とすればよい。
[Oxygen-free tank]
The anoxic tank functions to purify the nitrogen components in the wastewater supplied from the anaerobic tank by denitrifying bacteria. The oxygen-free tank is not particularly limited as long as it performs such a function, and various configurations can be adopted.
The anoxic tank typically has a cylindrical shape as shown in FIGS. 2 and 3, and may be configured to have denitrifying bacteria inside.
[好気槽]
好気槽は,無酸素槽から供給される汚排水を好気性菌により有機物の浄化処理する機能を果たす。好気槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。このような好気性菌として,例えば,枯草菌,ポリリン酸蓄積細菌(PAO)や後述する硝化菌などを用いることができる。
好気槽は,典型的には,図2,図3に示すように,円筒状の形状であって,内部に好気性菌を備えた構成とすればよい。
[Aerobic tank]
The aerobic tank functions to purify the wastewater supplied from the anoxic tank with organic substances by aerobic bacteria. The aerobic tank is not particularly limited as long as it performs such a function, and various configurations can be adopted. As such aerobic bacteria, for example, Bacillus subtilis, polyphosphate accumulating bacteria (PAO), nitrifying bacteria described below, and the like can be used.
The aerobic tank typically has a cylindrical shape as shown in FIGS. 2 and 3, and may be configured to have aerobic bacteria inside.
[促進酸化槽]
促進酸化槽は,好気槽から供給される汚排水を酸化分解により浄化処理する機能と,槽内に流入・発生した固形物をスカムポンプによって嫌気槽に返送する機能と,を果たす。促進酸化槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
また,促進酸化槽においては,・OH Radical(単に「ヒドロキシルラジカル」と略する)をはじめとする種々の反応がなされることから,ラジカル反応に対して耐性の高い素材を用いることが好ましく,例えば,ステンレス素材のものなどを用いることが好ましい。
[Promoted oxidation tank]
The accelerated oxidation tank has a function of purifying the wastewater supplied from the aerobic tank by oxidative decomposition and a function of returning the solid matter flowing into and generated in the tank to the anaerobic tank by a scum pump. The accelerated oxidation tank is not particularly limited as long as it performs such a function, and various configurations can be adopted.
Further, in the accelerated oxidation tank, various reactions such as OH Radical (simply abbreviated as “hydroxyl radical”) are performed, so it is preferable to use a material having high resistance to radical reaction. It is preferable to use a stainless steel material.
促進酸化槽における酸化分解については,酸化分解が可能な限り,特に限定されるものではなく,種々の手法を採用することができる。
促進酸化の手法については,オゾン(O3)の供給,過酸化水素(H2O2)の供給,高分子有機酸(高電子密度有機酸)の供給,UVの照射,超音波装置,これらを単独もしくは複数組み合わせて用いることができる。これにより,促進酸化を効果的に行うことができるという効果が得られる。
高分子有機酸については,槽内におけるPHを調整するとともに,オゾンとの反応によってラジカルを発生させる高電子密度を持つ有機酸である限り,特に限定されるものではなく,種々の高分子有機酸を用いることができる。このような高分子有機酸としては,典型的には,フルボ酸(fulvic acid),フミン酸(humic acid)を用いることができ,これらのいずれか又は複数を少なくとも含んでいることが好ましい。
高分子有機酸は,下記式に例示されるように,オゾンとの電子移動反応を通じて,ヒドロキシルラジカルなどのラジカル体を発生し,促進酸化槽における酸化反応を促すことが可能となる。
(式1)O3+高電子密度有機酸 → O3・有機酸(オゾン付加体有機酸)
(式2)O3・有機酸(オゾン付加体有機酸) → O3 -+有機酸+
(式3)O3 -+H+ →HO3 →OH+O2
The oxidative decomposition in the accelerated oxidation tank is not particularly limited as long as the oxidative decomposition is possible, and various methods can be adopted.
Regarding the method of accelerated oxidation, ozone (O 3 ) supply, hydrogen peroxide (H 2 O 2 ) supply, high molecular organic acid (high electron density organic acid) supply, UV irradiation, ultrasonic equipment, etc. Can be used alone or in combination. As a result, the effect that the accelerated oxidation can be effectively performed is obtained.
The high molecular organic acid is not particularly limited as long as it is an organic acid having a high electron density that adjusts the pH in the tank and generates radicals by reacting with ozone, and various high molecular organic acids can be used. Can be used. As such a high molecular organic acid, typically, fulvic acid and humic acid can be used, and it is preferable to contain at least one of them.
As shown in the following formula, the high molecular weight organic acid can generate radicals such as hydroxyl radicals through an electron transfer reaction with ozone to promote the oxidation reaction in the accelerated oxidation tank.
(Formula 1) O 3 + high electron density organic acid → O 3 · organic acid (ozone adduct organic acid)
(Formula 2) O 3 ·organic acid (ozone adduct organic acid) → O 3 − + organic acid +
(Formula 3) O 3 − +H + →HO 3 →OH+O 2
促進酸化槽における酸化分解は,さらに電気分解を組み合わせることによって行うことが好ましい。かかる好ましい構成によれば,促進酸化槽における酸化分解をさらに効率良く行うことができるという効果が得られる。
この場合,促進酸化槽は,その中心部に,電気分解を行う電気分解槽を備えることが好ましい。かかる好ましい構成によれば,中心部における促進酸化による分解の機能と,外部における浮遊分離の機能と,を分けることが可能となるので,汚排水の酸化分解と固形物の除去を効率良く行うことができるという効果が得られる。
The oxidative decomposition in the accelerated oxidation tank is preferably performed by further combining electrolysis. According to this preferable configuration, the effect that the oxidative decomposition in the accelerated oxidation tank can be performed more efficiently can be obtained.
In this case, the accelerated oxidation tank is preferably provided with an electrolysis tank for performing electrolysis at the center thereof. According to such a preferable configuration, it is possible to separate the function of decomposition by the accelerated oxidation in the central part and the function of floating separation in the outside, so that the oxidative decomposition of wastewater and the removal of solid matter can be efficiently performed. The effect that can be obtained is obtained.
本発明においては,マイクロバブル発生器をさらに備え,促進酸化槽の底部においてマイクロバブルを発生させることが好ましい。かかる好ましい構成によれば,促進酸化槽内に流入・発生した固形物を浮遊させ,スカムポンプによって嫌気槽に返送しやすい構成とすることが可能となるので,システムからの固形物の除去を促進させることができるという効果が得られる。
マイクロバブル発生器については,促進酸化槽の底部におけるマイクロバブルの発生が可能な限り,特に限定されるものではなく,種々の性能のものを採用することができ,また,種々の位置に設置することができる。マイクロバブル発生器は,典型的には,図2,図4に示すように,促進酸化槽の上部に設置することができる。
In the present invention, it is preferable that a microbubble generator is further provided to generate microbubbles at the bottom of the accelerated oxidation tank. According to such a preferable configuration, it is possible to suspend the solid matter that has flowed in and generated in the accelerated oxidation tank and return it to the anaerobic tank by the scum pump, so that the removal of the solid matter from the system is promoted. The effect that can be obtained is obtained.
The microbubble generator is not particularly limited as long as the generation of microbubbles at the bottom of the accelerated oxidation tank is possible, and various performances can be adopted and installed at various positions. be able to. The micro-bubble generator can be typically installed at the top of the accelerated oxidation tank, as shown in FIGS.
本発明においては,促進酸化槽と電気分解槽が,同心の円筒状に形成されていることが好ましい。かかる好ましい構成によれば,促進酸化槽の底部で発生したマイクロバブルによる上部への水流を,抵抗の少ない状態で上部まで到達させることが可能となるので,固形物の浮遊分離を促進させることができるという効果が得られる。 In the present invention, the accelerated oxidation tank and the electrolysis tank are preferably formed in concentric cylindrical shapes. According to this preferable configuration, the water flow to the upper part due to the microbubbles generated at the bottom of the accelerated oxidation tank can reach the upper part with less resistance, so that the floating separation of solid matter can be promoted. The effect that can be obtained is obtained.
これら一連の促進酸化により,意図的にヒドロキシルラジカルを発生させ,酸化力を向上・促進させることが可能となる。
すなわち,オゾンや過酸化水素,さらには図5に示すような紫外線(UV)などを組み合わせて用いることにより,強力な酸化剤であるヒドロキシルラジカルを発生させ,水中の難分解性汚染物質を分解・除去することが可能となる。特に,ダイオキシン類や環境ホルモン,農薬などの微料汚染物質の分解・除去に優れた効果を発揮することが期待できる。
さらに,オゾンや過酸化水素,UVなどによる分解が行われた後の主たる生成物は,酸素や水であるため,二次廃棄物がほとんど発生しないという効果が得られる。
また,促進酸化槽で発生したヒドロキシルラジカルを用いることにより,汚排水における脱色や脱臭,COD低減,殺菌などの効果も同時にもたらすことが可能となる。
By this series of accelerated oxidation, it becomes possible to intentionally generate hydroxyl radicals and improve/promote the oxidizing power.
That is, by using ozone, hydrogen peroxide, and also ultraviolet rays (UV) as shown in FIG. 5 in combination, hydroxyl radicals, which are strong oxidizers, are generated to decompose and decompose persistent pollutants in water. It can be removed. In particular, it can be expected to exert an excellent effect in decomposing/removing minute pollutants such as dioxins, environmental hormones, and agricultural chemicals.
Furthermore, since the main products after being decomposed by ozone, hydrogen peroxide, UV, etc. are oxygen and water, it is possible to obtain the effect that almost no secondary waste is generated.
In addition, by using hydroxyl radicals generated in the accelerated oxidation tank, it is possible to simultaneously bring about effects such as decolorization and deodorization in wastewater and wastewater, COD reduction, and sterilization.
[第一膜分離槽]
第一膜分離槽は,促進酸化槽から供給される汚排水を膜分離により浄化処理する機能を果たす。第一膜分離槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
また,第一膜分離槽は,後述する第二膜分離槽と比較すると,いわゆる粗分離としての性質を有するものであり,第一膜分離槽ないし第二膜分離槽において用いられる膜としては,MF膜(精密ろ過膜),UF膜(限外ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)を適宜組み合わせて用いればよい。第一膜分離槽においては,典型的には,UF膜を用いればよい。
[First membrane separation tank]
The first membrane separation tank performs the function of purifying the wastewater discharged from the accelerated oxidation tank by membrane separation. The first membrane separation tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
Further, the first membrane separation tank has a so-called rough separation property as compared with a second membrane separation tank described later, and as a membrane used in the first membrane separation tank or the second membrane separation tank, MF membrane (microfiltration membrane), UF membrane (ultrafiltration membrane), NF membrane (nanofiltration membrane) or RO membrane (reverse osmosis membrane) may be used in appropriate combination. A UF membrane may be typically used in the first membrane separation tank.
[オゾン接触槽]
オゾン接触槽は,第一膜分離槽から供給される汚排水をオゾンにより浄化処理する機能を果たす。オゾン接触槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
[Ozone contact tank]
The ozone contact tank has the function of purifying the wastewater discharged from the first membrane separation tank with ozone. The ozone contact tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
[生物活性炭槽]
生物活性炭槽は,オゾン接触槽から供給される汚排水を生物活性炭により浄化処理する機能を果たす。生物活性炭槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
[Bioactive carbon tank]
The biological activated carbon tank has the function of purifying the sewage and wastewater supplied from the ozone contact tank with biological activated carbon. The biological activated carbon tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
[第二膜分離槽]
第二膜分離槽は,生物活性炭槽から供給される汚排水を膜分離により浄化処理する機能を果たす。第二膜分離槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
第二膜分離槽は,処理水を最終的にシステム外へ放出する出口として機能するものであり,放出された処理水の使用用途に応じて,適宜,用いる膜を選択することができる。
[Second membrane separation tank]
The second membrane separation tank fulfills the function of purifying the wastewater discharged from the biological activated carbon tank by membrane separation. The second membrane separation tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
The second membrane separation tank functions as an outlet for finally discharging the treated water to the outside of the system, and the membrane to be used can be appropriately selected according to the intended use of the discharged treated water.
<<II.実施の形態>>
[実施の形態1]
以下,本発明の実施の形態1における汚排水浄化システムの構成について,図1から図5を参照しながら説明する。
<<II. Embodiment>>
[Embodiment 1]
Hereinafter, the configuration of the wastewater purification system according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5.
図1は本発明の実施の形態1における汚排水浄化システムの構成と流れを示す概念図,図2は当該汚排水浄化システムの全体構成を示す立面図,図3は当該汚排水浄化システムの全体構成を示す平面図,図4は当該汚排水浄化システムを構成する促進酸化槽を示す図((a)は立面図,(b)は平面図),図5は当該汚排水浄化システムを構成する促進酸化循環装置(マイクロバブル発生器)を示す立面図である。 1 is a conceptual diagram showing the configuration and flow of a wastewater purification system according to Embodiment 1 of the present invention, FIG. 2 is an elevational view showing the overall configuration of the wastewater purification system, and FIG. 3 is a view of the wastewater purification system. FIG. 4 is a plan view showing the entire structure, FIG. 4 is a diagram showing an accelerated oxidation tank constituting the wastewater purification system ((a) is an elevation view, (b) is a plan view), and FIG. 5 is the wastewater purification system. It is an elevation view which shows the accelerated oxidation circulation device (micro bubble generator) which comprises.
図1から図3に示すように,本実施の形態の汚排水浄化システム1は,上流側(汚排水発生源側)から順に配置された,汚排水発生源から供給される汚排水(原水)を浄化処理する原水集水槽2(図2,図3では不図示)と,原水集水槽2で浄化処理された汚排水を嫌気性菌により浄化処理する嫌気槽3と,嫌気槽3で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽4と,無酸素槽4で浄化処理された汚排水を好気性菌により浄化処理する好気槽5と,好気槽5で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽6と,促進酸化槽6で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽7と,第一膜分離槽7で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽8と,オゾン接触槽8で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽9と,生物活性炭槽9で浄化処理された汚排水を膜分離により浄化処理する第二膜分離槽10(図2,図3では不図示)と,第二膜分離槽10で浄化処理されて得られた処理水を貯水する処理水貯水槽11(図2では不図示)と,を備えている。
原水集水槽2,嫌気槽3,無酸素槽4,好気槽5,促進酸化槽6は,それぞれ,円筒タンクからなり,これらは縦置きにされている。
また,第一膜分離槽7,オゾン接触槽8,生物活性炭槽9,第二膜分離槽10,処理水貯水槽11は,それぞれ,角筒タンクからなり,これらも縦置きにされている。
なお,これらの円筒タンクや角筒タンクの素材については特に限定する必要はなく,典型的には,PVC(ポリ塩化ビニル)製のものを用いればよい。
また,促進酸化槽6やオゾン接触槽8においては,ラジカル反応などに対して耐性の高い素材を用いる必要があり,典型的には,ステンレス素材などを用いればよい。
As shown in FIG. 1 to FIG. 3, the wastewater purification system 1 of the present embodiment has wastewater (raw water) supplied from the wastewater source arranged in order from the upstream side (wastewater source side). Raw water collection tank 2 (not shown in FIGS. 2 and 3) for purifying water, anaerobic tank 3 for purifying sewage and wastewater purified by raw water collection tank 2 with anaerobic bacteria, and purification processing for anaerobic tank 3 Anoxic tank 4 that purifies the treated wastewater by denitrifying bacteria, aerobic tank 5 that purifies the wastewater that has been purified by anoxic tank 4 by aerobic bacteria, and that is purified by aerobic tank 5. The accelerated oxidation tank 6 for purifying the treated wastewater by oxidative decomposition, the first membrane separation tank 7 for purifying the wastewater purified by the accelerated oxidation tank 6 by membrane separation, and the first membrane separation tank 7 for purification An ozone contact tank 8 for purifying the treated wastewater treated with ozone, a biological activated carbon tank 9 for purifying the wastewater treated by the ozone contact tank 8 with bioactive carbon, and a biological activated carbon tank 9 were used for purification. A second membrane separation tank 10 (not shown in FIGS. 2 and 3) for purifying dirty wastewater by membrane separation, and a treated water storage tank for storing the treated water obtained by the purification treatment in the second membrane separation tank 10. 11 (not shown in FIG. 2).
The raw water collection tank 2, the anaerobic tank 3, the oxygen-free tank 4, the aerobic tank 5, and the accelerated oxidation tank 6 each consist of a cylindrical tank, which are vertically arranged.
The first membrane separation tank 7, the ozone contact tank 8, the biological activated carbon tank 9, the second membrane separation tank 10, and the treated water storage tank 11 are each formed of a rectangular cylinder tank, and these are also arranged vertically.
There is no particular limitation on the material of the cylindrical tank and the rectangular tube tank, and typically, a material made of PVC (polyvinyl chloride) may be used.
Further, in the accelerated oxidation tank 6 and the ozone contact tank 8, it is necessary to use a material having high resistance to radical reaction and the like, and typically, a stainless material or the like may be used.
これら各槽は,他のいずれか又は複数の槽に近接して配置されている。そして,嫌気槽3と無酸素槽4,ならびに,無酸素槽4と好気槽5は,それぞれ,底部で連通孔12,13を介して直接繋がっている。また,好気槽5と促進酸化槽6,促進酸化槽6と第一膜分離槽7,オゾン接触槽8と生物活性炭槽9,生物活性炭槽9と第二膜分離槽10,ならびに,第二膜分離槽10と処理水貯水槽11は,それぞれ,上部で連通管14,15,16等を介して連通されている。ここで,連通管14,15,16等は,各槽の底面からほぼ同じ高さの位置に設けられており,これにより,各槽における水位が同一に保持される構成となっている。
以上の構成により,重力に従った自然流荷原理により処理水の移動が可能となり,移動のための最小限のエネルギーで自己完結式の汚排水浄化システムとして機能させることが可能になる。
また,各槽が近接して配置されていることにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となる。そして,かかる構成により,配管のズレや歪みが極めて生じにくい汚排水浄化システムを実現することが可能となる。
Each of these tanks is arranged close to any one or a plurality of other tanks. The anaerobic tank 3 and the anoxic tank 4, and the anoxic tank 4 and the aerobic tank 5 are directly connected to each other through communication holes 12 and 13 at the bottom. Further, the aerobic tank 5 and the accelerated oxidation tank 6, the accelerated oxidation tank 6 and the first membrane separation tank 7, the ozone contact tank 8 and the biological activated carbon tank 9, the biological activated carbon tank 9 and the second membrane separation tank 10, and the second The membrane separation tank 10 and the treated water storage tank 11 are communicated with each other via communication pipes 14, 15, 16 and the like at the top. Here, the communication pipes 14, 15, 16 and the like are provided at substantially the same height from the bottom surface of each tank, whereby the water level in each tank is kept the same.
With the above configuration, it is possible to move the treated water according to the principle of natural load according to gravity, and it is possible to function as a self-contained wastewater purification system with the minimum energy for movement.
Further, since the tanks are arranged close to each other, it is possible to almost eliminate the positional deviation between the tanks and to shorten the length of the pipe as much as possible. With such a configuration, it becomes possible to realize a wastewater purification system in which displacement and distortion of the piping are extremely unlikely to occur.
本実施の形態の汚排水浄化システム1においては,原水集水槽2に汚排水(原水)が一定量溜まると,汚水ポンプ(不図示)が自動的に起動し,原水集水槽2内の汚排水が移送パイプ17を介して嫌気槽3へ圧送されるように構成されている。そして,嫌気槽3に汲み上げられた汚排水は,連通孔12,13および連通管14,15を介して無酸素槽4,好気槽5,促進酸化槽6,第一膜分離槽7の順に移動する。このように,原水集水槽2内の汚排水の水位が上がると,当該汚排水が自動的に嫌気槽3,無酸素槽4,好気槽5,第一膜分離槽7の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
また,第一膜分離槽7内の汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている。そして,オゾン接触槽8に汲み上げられた汚排水は,連通管16等を介して生物活性炭槽9,第二膜分離槽10,処理水貯水槽11の順に移動する。このように,第一膜分離槽7内の汚排水は,自動的にオゾン接触槽8,生物活性炭槽9,第二膜分離槽10,処理水貯水槽11の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
なお,ここでは,第一膜分離槽7内の汚排水が,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている場合を例に挙げて説明したが,必ずしもかかる構成に限定されるものではない。例えば,第一膜分離処理後の汚排水を,重力に従ってオゾン接触槽8に移動させるための連通孔(不図示)を底部に設けるようにしてもよい。
In the wastewater purification system 1 of the present embodiment, when a certain amount of wastewater (raw water) is collected in the raw water collection tank 2, a wastewater pump (not shown) is automatically activated, and the wastewater in the raw water collection tank 2 is discharged. Is pressure-fed to the anaerobic tank 3 via the transfer pipe 17. Then, the wastewater discharged into the anaerobic tank 3 is passed through the communication holes 12 and 13 and the communication pipes 14 and 15 in the order of the oxygen-free tank 4, the aerobic tank 5, the accelerated oxidation tank 6, and the first membrane separation tank 7. Moving. Thus, when the water level of the wastewater in the raw water collection tank 2 rises, the wastewater automatically moves in the order of the anaerobic tank 3, the oxygen-free tank 4, the aerobic tank 5, and the first membrane separation tank 7. Even if the flow rate adjusting tank is not provided separately, there will be no problem in the flow of sewage. As a result, the wastewater purification system can be made compact.
Further, the waste water in the first membrane separation tank 7 is pumped up to the ozone contact tank 8 by the self-priming pump 18. Then, the dirty wastewater pumped up to the ozone contact tank 8 moves to the biological activated carbon tank 9, the second membrane separation tank 10, and the treated water storage tank 11 in this order through the communication pipe 16 and the like. In this way, the wastewater in the first membrane separation tank 7 automatically moves in the order of the ozone contact tank 8, the biological activated carbon tank 9, the second membrane separation tank 10, and the treated water storage tank 11, so that the flow rate adjustment tank Even if it is not provided separately, there will be no problem in the flow of wastewater. As a result, the wastewater purification system can be made compact.
In addition, here, the case where the wastewater in the first membrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by the self-priming pump 18 has been described as an example. It is not limited. For example, a communication hole (not shown) may be provided at the bottom for moving the wastewater after the first membrane separation process to the ozone contact tank 8 according to gravity.
原水集水槽2は,汚排水発生源から供給される汚排水(原水)から夾雑固形物を除去するスクリーン機能を有している。そして,夾雑固形物が除去された後の汚排水は,嫌気槽3,無酸素槽4,好気槽5において嫌気性菌による嫌気性分解,好気性菌による好気性分解等を受けて浄化処理される。 The raw water collection tank 2 has a screen function of removing contaminant solids from the wastewater (raw water) supplied from the wastewater generation source. Then, the sewage drainage after the contaminant solids are removed is subjected to anaerobic decomposition by anaerobic bacteria, aerobic decomposition by aerobic bacteria in the anaerobic tank 3, the anoxic tank 4, and the aerobic tank 5 to be purified. To be done.
嫌気槽3には嫌気性菌が投入されている。そして,原水集水槽2から嫌気槽3に汲み上げられた汚排水は,当該嫌気槽3内において,嫌気性菌による嫌気性分解(還元反応)を受けて浄化処理される。
また,嫌気槽3内には,断続的に起動する水中ポンプ19が設置されている。そして,当該水中ポンプ19には,他端が固液分離機(デカンタ)20の流入口に接続された第一移送管21の一端が接続され,固液分離機20の流出口には,他端が無酸素槽4内に位置する第二移送管22の一端が接続されている。これにより,嫌気槽3に汲み上げられた汚排水に含まれている微細固形物を,固液分離機20の吐出口から吐出して除去できるようにされている。
図2中,参照符号23は,嫌気槽3中の嫌気菌により有機物の嫌気分解処理と好気槽から返送されたPAO菌によりリン処理を促進させるために嫌気槽3内を撹拌する撹拌用ポンプを示している。
Anaerobic bacteria are put in the anaerobic tank 3. Then, the wastewater drained from the raw water collection tank 2 to the anaerobic tank 3 is subjected to anaerobic decomposition (reduction reaction) by anaerobic bacteria in the anaerobic tank 3 to be purified.
A submersible pump 19 that is intermittently activated is installed in the anaerobic tank 3. The submersible pump 19 is connected to one end of a first transfer pipe 21 whose other end is connected to the inlet of a solid-liquid separator (decanter) 20, and the outlet of the solid-liquid separator 20 to another. One end of the second transfer pipe 22 whose end is located in the oxygen-free tank 4 is connected. As a result, the fine solid matter contained in the wastewater pumped up to the anaerobic tank 3 can be discharged and removed from the discharge port of the solid-liquid separator 20.
In FIG. 2, reference numeral 23 is a stirring pump that stirs the inside of the anaerobic tank 3 in order to promote anaerobic decomposition treatment of organic substances by anaerobic bacteria in the anaerobic tank 3 and phosphorus treatment by PAO bacteria returned from the aerobic tank Is shown.
嫌気槽3で浄化処理された汚排水は,固液分離機20および連通孔12を介して無酸素槽4に移動される。
無酸素槽4の上部には,自吸式ポンプ24が設置されている。そして,自吸式ポンプ24の流入口には,他端が後段の好気槽5内に位置する第一返送管25の一端が接続され,自吸式ポンプ24の流出口には,他端が無酸素槽4の水面に位置する第二返送管26の一端が接続されている。これにより,無酸素槽4には,好気槽5で増殖された硝化菌によってアンモニア態窒素が硝化されることで硝酸態窒素や亜硝酸態窒素が返送され,無酸素槽内で増殖された脱窒菌と無酸素状態で接触する。そして,脱窒菌が汚排水中の有機物成分を水素供与体として脱窒を行うことにより,汚排水中の硝酸態窒素が窒素ガスに変化して除去される。
図2中,参照符号27は,無酸素槽4中の窒素除去処理を促進させるために無酸素槽4内を撹拌する撹拌用ポンプを示している。
The wastewater purified by the anaerobic tank 3 is moved to the oxygen-free tank 4 through the solid-liquid separator 20 and the communication hole 12.
A self-priming pump 24 is installed above the oxygen-free tank 4. The self-priming pump 24 has an inlet connected to one end of a first return pipe 25, the other end of which is located in the rear aerobic tank 5, and the self-priming pump 24 has an outlet connected to the other end. Is connected to one end of a second return pipe 26 located on the water surface of the oxygen-free tank 4. As a result, nitrate nitrogen and nitrite nitrogen were returned to the anoxic tank 4 by nitrifying the ammonia nitrogen by the nitrifying bacteria grown in the aerobic tank 5, and they were propagated in the anoxic tank. Contact with denitrifying bacteria in anoxic condition. Then, the denitrifying bacteria perform denitrification by using the organic component in the wastewater as a hydrogen donor, whereby the nitrate nitrogen in the wastewater is converted into nitrogen gas and removed.
In FIG. 2, reference numeral 27 indicates a stirring pump for stirring the inside of the oxygen-free tank 4 in order to accelerate the nitrogen removal processing in the oxygen-free tank 4.
無酸素槽4で浄化処理された汚排水は,連通孔13を介して好気槽5に移動される。この好気槽5には,好気性菌である硝化菌が投入されている。そして,無酸素槽4で浄化処理された汚排水は,好気槽5内で曝気処理され,好気槽5に投入培養された好気性菌による有機物の酸化分解が行われるとともに,アンモニアはアンモニア酸化菌と亜硝酸酸化菌によって硝酸,亜硝酸になる硝化反応が行われる。
無酸素槽4の上方には,自吸式ポンプ28が設置されている。そして,自吸式ポンプ28の流入口には,他端が好気槽5内に位置する第三返送管29の一端が接続され,自吸式ポンプ28の流出口には,他端が嫌気槽3の水面の真上に位置する第四返送管30の一端が接続されている。これにより,嫌気槽3,無酸素槽4,好気槽5での一連の浄化処理を繰り返し行うことができるので,浄化処理の品質を高めることが可能となる。
なお,好気槽5は,上流側の好気槽5aと,下流側の好気槽5bと,からなっている。そして,無酸素槽4と上流側の好気槽5aとが,底部で連通孔13を介して直接繋がっている。また,第一返送管25の他端は,上流側の好気槽5a内に位置している。また,第三返送管29の他端は,下流側の好気槽5b内に位置している。
また,嫌気槽3,無酸素槽4,好気槽5においては,遠赤外線を通じて微生物の活性化と保温断熱効果が高められるように工夫されている。
The wastewater purified by the oxygen-free tank 4 is moved to the aerobic tank 5 through the communication hole 13. The aerobic tank 5 is charged with nitrifying bacteria which are aerobic bacteria. Then, the wastewater purified by the anoxic tank 4 is aerated in the aerobic tank 5, and the oxidative decomposition of the organic substances by the aerobic bacteria introduced and cultured in the aerobic tank 5 is performed. Nitrification reaction to form nitric acid and nitrite is performed by oxidizing bacteria and nitrite oxidizing bacteria.
A self-priming pump 28 is installed above the oxygen-free tank 4. The other end is connected to the inflow port of the self-priming pump 28, and the other end is anaerobic at the outflow port of the self-priming pump 28. One end of the fourth return pipe 30 located directly above the water surface of the tank 3 is connected. Thus, a series of purification treatments in the anaerobic tank 3, the oxygen-free tank 4, and the aerobic tank 5 can be repeatedly performed, so that the quality of the purification processing can be improved.
The aerobic tank 5 is composed of an upstream aerobic tank 5a and a downstream aerobic tank 5b. The anoxic tank 4 and the aerobic tank 5a on the upstream side are directly connected to each other at the bottom via the communication hole 13. The other end of the first return pipe 25 is located in the upstream aerobic tank 5a. The other end of the third return pipe 29 is located inside the aerobic tank 5b on the downstream side.
Further, in the anaerobic tank 3, the oxygen-free tank 4, and the aerobic tank 5, it is devised so that the activation of microorganisms and the heat insulation effect can be enhanced through far infrared rays.
好気槽5で浄化処理された汚排水は,連通管14を介して促進酸化槽6に移動される。そして,好気槽5で浄化処理された汚排水は,促進酸化槽6内で酸化分解により浄化処理される。
図2から図4に示すように,促進酸化槽6には,スカムポンプ31が浮設され,当該スカムポンプ31には,他端が嫌気槽3の水面の真上に位置する第五返送管32の一端が接続されている。これにより,促進酸化槽6内に流入・発生した微細固形物を,嫌気槽3に返送し,固液分離機20の吐出口から吐出して除去できるようにされている。
The dirty waste water purified in the aerobic tank 5 is moved to the accelerated oxidation tank 6 via the communication pipe 14. Then, the wastewater purified by the aerobic tank 5 is purified by oxidative decomposition in the accelerated oxidation tank 6.
As shown in FIGS. 2 to 4, a scum pump 31 is floated in the accelerated oxidation tank 6, and the other end of the scum pump 31 of the fifth return pipe 32 located directly above the water surface of the anaerobic tank 3. One end is connected. As a result, the fine solid matter that has flowed into and generated in the accelerated oxidation tank 6 can be returned to the anaerobic tank 3 and discharged from the discharge port of the solid-liquid separator 20 to be removed.
図2から図5に示すように,本実施の形態の汚排水浄化システム1は,促進酸化循環装置(マイクロバブル発生器)34を備えており,促進酸化槽6の底部においてマイクロバブルを発生させることができるようにされている。かかる構成によれば,促進酸化槽6内に流入・発生した微細固形物を浮遊させ,スカムポンプ31によって嫌気槽3に返送しやすくなるので,システムからの微細固形物の除去を促進させることができる。 As shown in FIGS. 2 to 5, the sewage and wastewater purification system 1 of the present embodiment is provided with the accelerated oxidation circulation device (micro bubble generator) 34, and generates micro bubbles at the bottom of the accelerated oxidation tank 6. Has been made possible. According to this structure, the fine solid matter that has flowed into and generated in the accelerated oxidation tank 6 can be suspended and easily returned to the anaerobic tank 3 by the scum pump 31, so that the removal of the fine solid material from the system can be promoted. ..
より具体的には,促進酸化循環装置(マイクロバブル発生器)34は,促進酸化循環装置本体35と,促進酸化槽6内に設置され,揚水管36を介して促進酸化循環装置本体35の一端に接続された水中ポンプ37と,促進酸化循環装置本体35の他端に接続され,先端のマイクロバブル放出部38aが促進酸化槽6内の底部に配置される放出管38と,を備えている。
促進酸化循環装置本体35は,揚水管36に接続された微細気泡発生ノズル39と,当該微細気泡発生ノズル39と放出管38との間に順に配置された,UVランプ40,TiO2 ボール41が封入された石英管42,気液混合管43と,を備えており,微細気泡発生ノズル39部分に過酸化水素(H2O2),高分子有機酸(フルボ酸,フミン酸など),オゾン(O3)を単独もしくは複数組み合わせて送り込むことができるようにされている。
促進酸化槽6内には,PVC(ポリ塩化ビニル)製の円筒タンクからなる電気分解槽33が同心状に配置されており,電気分解槽33の内周面には,TiO2陽陰極板46a,46bが配置されている。そして,促進酸化槽6と電気分解槽33は,底部で連通孔47を介して直接繋がっている。また,電気分解槽33と促進酸化槽6は,上部で連通管48を介して連通されている。ここで,連通管48は,上述した連通管14,15,16等とほぼ同じ高さの位置に設けられている。
More specifically, the accelerated oxidation circulation device (microbubble generator) 34 is installed in the accelerated oxidation circulation device body 35 and the accelerated oxidation tank 6, and one end of the accelerated oxidation circulation device body 35 is provided via a pumping pipe 36. And a submersible pump 37 connected to the main body 35 of the accelerated oxidation circulation device, and a discharge pipe 38 connected to the other end of the main body 35 of the accelerated oxidation circulation device and having a microbubble discharging portion 38a at the tip disposed at the bottom of the accelerated oxidation tank 6. ..
The main body 35 of the accelerated oxidation circulation device includes a fine bubble generating nozzle 39 connected to the pumping pipe 36, and a UV lamp 40 and a TiO 2 ball 41 arranged in order between the fine bubble generating nozzle 39 and the discharge pipe 38. A quartz tube 42 and a gas-liquid mixing tube 43, which are enclosed, are provided, and hydrogen peroxide (H 2 O 2 ), high molecular organic acid (fulvic acid, humic acid, etc.), ozone are provided in the fine bubble generating nozzle 39. (O 3 ) can be sent alone or in combination.
Inside the accelerated oxidation tank 6, an electrolysis tank 33 composed of a cylindrical tank made of PVC (polyvinyl chloride) is concentrically arranged, and on the inner peripheral surface of the electrolysis tank 33, a TiO2 positive cathode plate 46a, 46b is arranged. The accelerated oxidation tank 6 and the electrolysis tank 33 are directly connected to each other at the bottom via the communication hole 47. Further, the electrolysis tank 33 and the accelerated oxidation tank 6 are communicated with each other via a communication pipe 48 at the upper part. Here, the communication pipe 48 is provided at a position substantially the same height as the above-mentioned communication pipes 14, 15, 16 and the like.
以上の構成を備えた促進酸化槽6により,意図的にOHラジカルを発生させ,酸化力を向上・促進させることが可能となる。すなわち,オゾンや過酸化水素,さらには紫外線(UV)などを組み合わせて用いることにより,強力な酸化剤であるヒドロキシルラジカルを発生させ,水中の難分解性汚染物質を分解・除去することが可能となる。特に,ダイオキシン類や環境ホルモン,農薬などの微料汚染物質の分解・除去に優れた効果を発揮することが期待できる。また,オゾンや過酸化水素,高分子有機酸の組み合わせにより,分解後の主たる生成物は,酸素や水であるため,二次廃棄物がほとんど発生しないという効果が得られる。さらに,オゾンを用いるなどにより,汚排水における脱色や脱臭,COD低減,殺菌などの効果も同時にもたらすことが可能となる。
また,促進酸化槽6における酸化分解において,上記のように,さらに電気分解を組み合わせることにより,促進酸化槽6における酸化分解をさらに効率良く行うことが可能となる。
With the accelerated oxidation tank 6 having the above configuration, it is possible to intentionally generate OH radicals and improve/promote the oxidizing power. In other words, it is possible to decompose and remove persistent pollutants in water by generating hydroxyl radicals, which are strong oxidizers, by using ozone, hydrogen peroxide, and ultraviolet (UV) in combination. Become. In particular, it can be expected to exert an excellent effect in decomposing/removing minute pollutants such as dioxins, environmental hormones, and agricultural chemicals. Also, due to the combination of ozone, hydrogen peroxide, and high molecular weight organic acid, the main products after decomposition are oxygen and water, so that the effect that almost no secondary waste is generated is obtained. Furthermore, by using ozone, it is possible to bring about effects such as decolorization and deodorization in wastewater, COD reduction, and sterilization at the same time.
Further, in the oxidative decomposition in the accelerated oxidation tank 6, by further combining electrolysis as described above, the oxidative decomposition in the accelerated oxidation tank 6 can be performed more efficiently.
図1から図3に示すように,促進酸化槽6で浄化処理された汚排水は,連通管15を介して第一膜分離槽7に移動される。そして,促進酸化槽6で浄化処理された汚排水は,第一膜分離槽7内で膜分離により浄化処理される。
第一膜分離槽7は,後述する第二膜分離槽10と比較すると,いわゆる粗分離としての性質を有するものであり,膜(メンブレイン)としてはUF膜(限外ろ過膜)49が用いられている。
図2中,参照符号50は散気管を示しており,当該散気管50は,活性汚泥への酸素供給と気泡の上昇流による膜面洗浄の機能を果たす。
なお,第一膜分離槽7で捕捉された固形物や剥離した生物膜は,逆洗水として嫌気槽3へ移送される。
As shown in FIGS. 1 to 3, the sewage drainage purified by the accelerated oxidation tank 6 is transferred to the first membrane separation tank 7 via the communication pipe 15. Then, the dirty wastewater purified in the accelerated oxidation tank 6 is purified in the first membrane separation tank 7 by membrane separation.
The first membrane separation tank 7 has a so-called rough separation property as compared with a second membrane separation tank 10 described later, and a UF membrane (ultrafiltration membrane) 49 is used as a membrane (membrane). Has been.
In FIG. 2, reference numeral 50 indicates an air diffusing tube, and the air diffusing tube 50 performs the function of supplying oxygen to the activated sludge and cleaning the membrane surface by the upward flow of bubbles.
The solid matter captured in the first membrane separation tank 7 and the separated biofilm are transferred to the anaerobic tank 3 as backwash water.
第一膜分離槽7で浄化処理された汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられる。そして,第一膜分離槽7で浄化処理された汚排水は,オゾン接触槽8内でオゾンにより浄化処理される。
図2中,参照符号51は水中ポンプ式のナノマイクロバブルインジェックトを示しており,当該ナノマイクロバブルインジェックト51により,オゾンを含むナノマイクロバブルを発生させて,第一膜分離槽7で浄化処理された汚排水をさらに浄化処理することができるようにされている。
The wastewater that has been purified in the first membrane separation tank 7 is pumped to the ozone contact tank 8 by the self-priming pump 18. Then, the wastewater purified by the first membrane separation tank 7 is purified by ozone in the ozone contact tank 8.
In FIG. 2, reference numeral 51 indicates a submersible pump type nano-micro bubble injector, and the nano-micro bubble injector 51 generates ozone-containing nano micro-bubbles to generate the first membrane separation tank 7 The sewage and wastewater that has been purified by the above method can be further purified.
オゾン接触槽8で浄化処理された汚排水は,連通管16を介して生物活性炭槽9に移動される。そして,オゾン接触槽8で浄化処理された汚排水は,生物活性炭槽9内で生物活性炭52により浄化処理される。 The dirty wastewater purified by the ozone contact tank 8 is moved to the biological activated carbon tank 9 through the communication pipe 16. Then, the sewage drainage purified in the ozone contact tank 8 is purified in the biological activated carbon tank 9 by the biological activated carbon 52.
図1に示すように,生物活性炭槽9で浄化処理された汚排水は,第二膜分離槽10に移動される。そして,生物活性炭槽9で浄化処理された汚排水は,第二膜分離槽10内で膜分離により浄化処理される。
第二膜分離槽10における膜としては,得られる処理水の使用用途に応じて,MF膜(精密ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)などが用いられる。
As shown in FIG. 1, the wastewater purified by the biological activated carbon tank 9 is moved to the second membrane separation tank 10. Then, the wastewater that has been purified in the biological activated carbon tank 9 is purified in the second membrane separation tank 10 by membrane separation.
As the membrane in the second membrane separation tank 10, an MF membrane (microfiltration membrane), an NF membrane (nanofiltration membrane), an RO membrane (reverse osmosis membrane), or the like is used depending on the intended use of the treated water.
図1,図3に示すように,第二膜分離槽10で浄化処理されて得られた処理水は,処理水貯水槽11に貯められる。処理水貯水槽11に貯められた処理水は,水質が政令で定める技術上の基準に適合していれば,河川等に放流してもよい。また,河川等に放流することなく,敷地内で処理するようにしてもよい(再使用)。 As shown in FIGS. 1 and 3, the treated water obtained by the purification treatment in the second membrane separation tank 10 is stored in the treated water storage tank 11. The treated water stored in the treated water storage tank 11 may be discharged to a river or the like as long as the quality of the water conforms to the technical standards specified by the Cabinet Order. In addition, it may be disposed on site without being discharged to rivers (reuse).
本実施の形態の汚排水浄化システム1は,例えば,トイレ室の汚水槽(汚排水発生源)から供給される汚排水の浄化処理に適用することができる。また,図6に示すように,畜舎から供給される汚排水の浄化処理に適用することもでき,この場合,原水集水槽2で除去された夾雑固形物や嫌気槽3で除去された微細固形物を堆肥化することができる。 The wastewater purification system 1 of the present embodiment can be applied to, for example, a purification process of wastewater supplied from a wastewater tank (sewage source) in a toilet room. Further, as shown in FIG. 6, it can also be applied to the purification treatment of dirty wastewater supplied from a livestock house, and in this case, contaminant solids removed in the raw water collection tank 2 or fine solids removed in the anaerobic tank 3 Things can be composted.
[実施の形態2]
次に,本発明の実施の形態2における汚排水浄化システムの構成について,図7から図13を参照しながら説明する。
[Second Embodiment]
Next, the configuration of the wastewater purification system in the second embodiment of the present invention will be described with reference to FIGS. 7 to 13.
図7は本発明の実施の形態2における汚排水浄化システムの構成と流れを示す概念図,図8は当該汚排水浄化システムの全体構成を示す立面図,図9は当該汚排水浄化システムの全体構成を示す平面図,図10は当該汚排水浄化システムを構成する促進酸化槽を示す図((a)は立面図,(b)は平面図),図11は当該汚排水浄化システムを構成する促進酸化装置(マイクロバブル発生器)を示す立面図((a)はオゾンガスと過酸化水素水混合注入型,(b)はオゾン水と過酸化水素水分離注入型),図12および図13は当該汚排水浄化システムを構成する促進酸化槽の構造に起因する効果を説明するための図である。 FIG. 7 is a conceptual diagram showing the configuration and flow of the wastewater purification system according to Embodiment 2 of the present invention, FIG. 8 is an elevational view showing the overall configuration of the wastewater purification system, and FIG. 9 is the wastewater purification system. FIG. 10 is a plan view showing the overall configuration, FIG. 10 is a diagram showing an accelerated oxidation tank constituting the wastewater purification system ((a) is an elevation view, (b) is a plan view), and FIG. 11 is the wastewater purification system. FIG. 12 and an elevation view showing a constituent accelerated oxidizer (micro bubble generator) ((a) is a mixture injection type of ozone gas and hydrogen peroxide solution, (b) is a separate injection type of ozone water and hydrogen peroxide solution). FIG. 13 is a diagram for explaining the effect resulting from the structure of the accelerated oxidation tank that constitutes the wastewater purification system.
図7から図9に示すように,本実施の形態の汚排水浄化システム53は,上流側(汚排水発生源側)から順に配置された,汚排水発生源から供給される汚排水(原水)を浄化処理する原水集水槽2(図8では不図示)と,原水集水槽2で浄化処理された汚排水を嫌気性菌により浄化処理する嫌気槽3と,嫌気槽3で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽4と,無酸素槽4で浄化処理された汚排水を好気性菌により浄化処理する好気槽5と,好気槽5で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽6と,促進酸化槽6で浄化処理された汚排水を生物処理により浄化処理する生物曝気槽54と,生物曝気槽54で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽7と,第一膜分離槽7で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽8と,オゾン接触槽8で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽9と,を備えている。
生物活性炭槽9で浄化処理された汚排水は,処理水槽55(図8では不図示)に貯められる。処理水槽55に貯められた処理水は,第二膜分離槽10(図8では不図示)に移送され,MF膜(精密ろ過膜),NF膜(ナノろ過膜)などを用いた膜分離により浄化処理されて処理水槽55に返送される。そして,水質が政令で定める技術上の基準に適合していれば,河川等に放流される。一方,水質が政令で定める技術上の基準に適合していなければ,河川等に放流されることなく,産業用水として使用される。また,第二膜分離槽10でRO膜(逆浸透膜)を用いた膜分離により浄化処理されて得られた処理水は,精製水槽56に貯められ,精製水(飲用水)として使用される。
As shown in FIG. 7 to FIG. 9, the wastewater purification system 53 of the present embodiment is a wastewater (raw water) supplied from the wastewater generation source, which is arranged in order from the upstream side (sewage generation source side). Raw water collection tank 2 (not shown in FIG. 8) for purifying the water, anaerobic tank 3 for purifying the wastewater purified by the raw water collection tank 2 with anaerobic bacteria, and dirt purified by the anaerobic tank 3. Anoxic tank 4 for purifying wastewater with denitrifying bacteria, aerobic tank 5 for purifying dirty wastewater purified with anoxic tank 4 with aerobic bacteria, and dirty wastewater purified with aerobic tank 5. Oxidation oxidization tank 6 for purifying sewage by oxidative decomposition, biological aeration tank 54 for purifying effluent wastewater purified by accelerated oxidization tank 6 by biological treatment, and sewage wastewater purified by biological aeration tank 54 The first membrane separation tank 7 for purification treatment by separation, the ozone contact tank 8 for purifying the wastewater wastewater purified by the first membrane separation tank 7 with ozone, and the wastewater wastewater purified by the ozone contact tank 8 And a biological activated carbon tank 9 for purification treatment with biological activated carbon.
The wastewater that has been purified by the biological activated carbon tank 9 is stored in a treated water tank 55 (not shown in FIG. 8). The treated water stored in the treated water tank 55 is transferred to the second membrane separation tank 10 (not shown in FIG. 8) and subjected to membrane separation using an MF membrane (microfiltration membrane), an NF membrane (nanofiltration membrane), or the like. It is purified and returned to the treated water tank 55. If the water quality meets the technical standards specified by the Cabinet Order, it will be discharged into rivers. On the other hand, if the water quality does not meet the technical standards specified by the Cabinet Order, it will be used as industrial water without being discharged into rivers. The treated water obtained by the purification treatment by the membrane separation using the RO membrane (reverse osmosis membrane) in the second membrane separation tank 10 is stored in the purified water tank 56 and is used as the purified water (drinking water). ..
原水集水槽2,嫌気槽3,無酸素槽4,好気槽5,生物曝気槽54,第一膜分離槽7,オゾン接触槽8,生物活性炭槽9,処理水槽55,第二膜分離槽10,および精製水槽56は,それぞれ,角筒タンクからなり,これらは縦置きにされている。
また,促進酸化槽6は,円筒タンクからなり,この円筒タンクも縦置きにされている。
なお,これらの円筒タンクや角筒タンクの素材については特に限定する必要はないが,典型的には,PVC(ポリ塩化ビニル)製のものを用いればよい。
また,促進酸化槽6においては,ラジカル反応などに対して耐性の高い素材を用いる必要があり,典型的には,ステンレス素材などを用いればよい。
Raw water collection tank 2, anaerobic tank 3, anoxic tank 4, aerobic tank 5, biological aeration tank 54, first membrane separation tank 7, ozone contact tank 8, biological activated carbon tank 9, treated water tank 55, second membrane separation tank Each of 10 and the purified water tank 56 is composed of a rectangular tube tank, and these are arranged vertically.
The accelerated oxidation tank 6 is composed of a cylindrical tank, and this cylindrical tank is also placed vertically.
The material of these cylindrical tanks and rectangular cylinder tanks is not particularly limited, but typically, PVC (polyvinyl chloride) may be used.
Further, in the accelerated oxidation tank 6, it is necessary to use a material having high resistance to radical reaction and the like, and typically, a stainless material or the like may be used.
これら各槽は,他のいずれか又は複数の槽に近接して配置されている。そして,嫌気槽3と無酸素槽4,無酸素槽4と好気槽5,ならびに,促進酸化槽6と生物曝気槽54は,それぞれ,底部で連通孔12,13,57を介して直接繋がっている。また,好気槽5と促進酸化槽6,生物曝気槽54と第一膜分離槽7,オゾン接触槽8と生物活性炭槽9,処理水槽55と第二膜分離槽10,ならびに,第二膜分離槽10と精製水槽56は,それぞれ,上部で連通管14,15,16等を介して連通されている。ここで,連通管14,15,16等は,各槽の底面からほぼ同じ高さの位置に設けられており,これにより,各槽における水位が同一に保持される構成となっている。
以上の構成により,重力に従った処理水の移動が可能となり,移動のための最小限のエネルギーで自己完結式の汚排水浄化システムとして機能させることが可能になる。
また,各槽が近接して配置されていることにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となる。そして,かかる構成により,配管のズレや歪みが極めて生じにくい汚排水浄化システムを実現することが可能となる。
Each of these tanks is arranged close to any one or a plurality of other tanks. The anaerobic tank 3 and the anoxic tank 4, the anoxic tank 4 and the aerobic tank 5, and the accelerated oxidation tank 6 and the biological aeration tank 54 are directly connected to each other through the communication holes 12, 13, and 57 at the bottom. ing. In addition, aerobic tank 5 and accelerated oxidation tank 6, biological aeration tank 54 and first membrane separation tank 7, ozone contact tank 8 and biological activated carbon tank 9, treated water tank 55 and second membrane separation tank 10, and second membrane The separation tank 10 and the purified water tank 56 are communicated with each other via communication pipes 14, 15, 16 and the like at the top. Here, the communication pipes 14, 15, 16 and the like are provided at substantially the same height from the bottom surface of each tank, whereby the water level in each tank is kept the same.
With the above configuration, it is possible to move the treated water according to gravity, and it is possible to function as a self-contained wastewater purification system with the minimum energy for movement.
Further, since the tanks are arranged close to each other, it is possible to almost eliminate the positional deviation between the tanks and to shorten the length of the pipe as much as possible. With such a configuration, it becomes possible to realize a wastewater purification system in which displacement and distortion of the piping are extremely unlikely to occur.
本実施の形態の汚排水浄化システム53においては,原水集水槽2に汚排水(原水)が一定量溜まると,汚水ポンプ(不図示)が自動的に起動し,原水集水槽2内の汚排水が移送パイプ17を介して嫌気槽3へ圧送されるように構成されている。そして,嫌気槽3に汲み上げられた汚排水は,連通孔12,13,連通管14,連通孔57および連通管15を介して無酸素槽4,好気槽5,促進酸化槽6,生物曝気槽54,第一膜分離槽7の順に移動する。このように,原水集水槽2内の汚排水の水位が上がると,当該汚排水が自動的に嫌気槽3,無酸素槽4,好気槽5,促進酸化槽6,生物曝気槽54,第一膜分離槽7の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
また,第一膜分離槽7内の汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている。そして,オゾン接触槽8に汲み上げられた汚排水は,連通管16等を介して生物活性炭槽9,処理水槽55,第二膜分離槽10,精製水槽56の順に移動する。このように,第一膜分離槽7内の汚排水は,自動的にオゾン接触槽8,生物活性炭槽9,処理水槽55,第二膜分離槽10,精製水槽56の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
なお,ここでは,第一膜分離槽7内の汚排水が,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている場合を例に挙げて説明したが,必ずしもかかる構成に限定されるものではない。例えば,第一膜分離処理後の汚排水を,重力に従ってオゾン接触槽8に移動させるための連通孔(不図示)を底部に設けるようにしてもよい。
In the wastewater purification system 53 of the present embodiment, when a certain amount of wastewater (raw water) is accumulated in the raw water collection tank 2, a wastewater pump (not shown) is automatically activated, and the wastewater in the raw water collection tank 2 is discharged. Is pressure-fed to the anaerobic tank 3 via the transfer pipe 17. Then, the sewage discharged into the anaerobic tank 3 passes through the communication holes 12, 13, the communication pipe 14, the communication hole 57 and the communication pipe 15, and the oxygen-free tank 4, the aerobic tank 5, the accelerated oxidation tank 6, the biological aeration. The tank 54 and the first membrane separation tank 7 are moved in this order. In this way, when the water level of the sewage drainage in the raw water collection tank 2 rises, the sewage drainage automatically becomes anaerobic tank 3, anoxic tank 4, aerobic tank 5, accelerated oxidation tank 6, biological aeration tank 54, Since the one membrane separation tank 7 is moved in this order, no problem occurs in the flow of the waste water without the need of separately providing the flow rate adjusting tank. As a result, the wastewater purification system can be made compact.
Further, the waste water in the first membrane separation tank 7 is pumped up to the ozone contact tank 8 by the self-priming pump 18. Then, the dirty waste water pumped up to the ozone contact tank 8 moves to the biological activated carbon tank 9, the treated water tank 55, the second membrane separation tank 10, and the purified water tank 56 in this order through the communication pipe 16 and the like. In this way, the wastewater in the first membrane separation tank 7 automatically moves in the order of the ozone contact tank 8, the biological activated carbon tank 9, the treated water tank 55, the second membrane separation tank 10, and the purified water tank 56, so the flow rate is Even if the adjusting tank is not provided separately, there will be no problem in the flow of wastewater. As a result, the wastewater purification system can be made compact.
In addition, here, the case where the wastewater in the first membrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by the self-priming pump 18 has been described as an example. It is not limited. For example, a communication hole (not shown) may be provided at the bottom for moving the wastewater after the first membrane separation process to the ozone contact tank 8 according to gravity.
原水集水槽2は,ドラムスクリーン(不図示)を備え,汚排水発生源から供給される汚排水(原水)から夾雑固形物を除去する機能を果たす。そして,夾雑固形物が除去された後の汚排水は,嫌気槽3,無酸素槽4,好気槽5において嫌気性菌による嫌気性分解,好気性菌による好気性分解等を受けて浄化処理される。 The raw water collection tank 2 is provided with a drum screen (not shown) and has a function of removing contaminant solids from the waste water (raw water) supplied from the waste water generation source. Then, the sewage drainage after the contaminant solids are removed is subjected to anaerobic decomposition by anaerobic bacteria, aerobic decomposition by aerobic bacteria in the anaerobic tank 3, the anoxic tank 4, and the aerobic tank 5 to be purified. To be done.
嫌気槽3には嫌気性菌が投入されている。図8中,参照符号58は,嫌気性菌が固定される微生物担体を示している。そして,原水集水槽2から嫌気槽3に汲み上げられた汚排水は,当該嫌気槽3内において,嫌気性菌による嫌気性分解(還元反応)を受けて浄化処理される。
また,嫌気槽3内には,断続的に起動する水中ポンプ19が設置されている。そして,当該水中ポンプ19には,他端が固液分離機20の流入口に接続された第一移送管21の一端が接続され,固液分離機20の流出口には,他端が無酸素槽4内に位置する第二移送管22の一端が接続されている。これにより,嫌気槽3に汲み上げられた汚排水に含まれている微細固形物を,固液分離機20の吐出口から吐出して除去できるようにされている。
Anaerobic bacteria are put in the anaerobic tank 3. In FIG. 8, reference numeral 58 indicates a microbial carrier on which anaerobic bacteria are fixed. Then, the wastewater drained from the raw water collection tank 2 to the anaerobic tank 3 is subjected to anaerobic decomposition (reduction reaction) by anaerobic bacteria in the anaerobic tank 3 to be purified.
A submersible pump 19 that is intermittently activated is installed in the anaerobic tank 3. The submersible pump 19 is connected to one end of a first transfer pipe 21 having the other end connected to the inlet of the solid-liquid separator 20, and the outlet of the solid-liquid separator 20 has no other end. One end of the second transfer pipe 22 located in the oxygen tank 4 is connected. As a result, the fine solid matter contained in the wastewater pumped up to the anaerobic tank 3 can be discharged and removed from the discharge port of the solid-liquid separator 20.
嫌気槽3で浄化処理された汚排水は,固液分離機20および連通孔12を介して無酸素槽4に移動される。
無酸素槽4の上部には,自吸式ポンプ24が設置されている。そして,自吸式ポンプ24の流入口には,他端が後段の好気槽5内に位置する第一返送管25の一端が接続され,自吸式ポンプ24の流出口には,他端が無酸素槽4内に位置する第二返送管26の一端が接続されている。これにより,無酸素槽4には,好気槽5で増殖された硝化菌も返送され,嫌気槽3で浄化処理された汚排水と脱窒菌とが無酸素状態で接触する。そして,嫌気槽3で浄化処理された汚排水は無酸素槽で増殖されている脱窒菌が汚排水中の有機物成分を水素供与体として脱窒を行うことにより,汚排水中の硝酸態窒素が窒素ガスに変化して除去される。
図2中,参照符号59は,硝化菌が固定される微生物担体を示している。また,参照符号60は,無酸素槽4中の活性汚泥濃度を均一化するために無酸素槽4内を撹拌する下向式撹拌ポンプを示している。
The wastewater purified by the anaerobic tank 3 is moved to the oxygen-free tank 4 through the solid-liquid separator 20 and the communication hole 12.
A self-priming pump 24 is installed above the oxygen-free tank 4. The self-priming pump 24 has an inlet connected to one end of a first return pipe 25, the other end of which is located in the rear aerobic tank 5, and the self-priming pump 24 has an outlet connected to the other end. Is connected to one end of a second return pipe 26 located in the oxygen-free tank 4. As a result, the nitrifying bacteria that have proliferated in the aerobic tank 5 are also returned to the anoxic tank 4, and the wastewater that has been purified in the anaerobic tank 3 and the denitrifying bacteria come into contact with each other in an anoxic state. Then, the sewage drainage purified in the anaerobic tank 3 is denitrified by the denitrifying bacteria grown in the anoxic tank using the organic component in the sewage drainage as a hydrogen donor, so that nitrate nitrogen in the wastewater is removed It is changed to nitrogen gas and removed.
In FIG. 2, reference numeral 59 indicates a microbial carrier on which nitrifying bacteria are fixed. Further, reference numeral 60 indicates a downward stirring pump that stirs the oxygen-free tank 4 in order to make the activated sludge concentration in the oxygen-free tank 4 uniform.
無酸素槽4で浄化処理された汚排水は,連通孔13を介して好気槽5に移動される。この好気槽5には,好気性菌である硝化菌が投入されている。そして,無酸素槽4で浄化処理された汚排水は,好気槽5内で曝気処理され,好気槽5に投入培養された好気性菌による有機物の酸化分解が行われるとともに,アンモニアはアンモニア酸化菌と亜硝酸酸化菌によって硝酸,亜硝酸になる硝化反応が行われる。
図2中,参照符号61は,硝化菌が固定される微生物担体を示している。
無酸素槽4の上方には,自吸式ポンプ28が設置されている。そして,自吸式ポンプ28の流入口には,他端が好気槽5内に位置する第三返送管29の一端が接続され,自吸式ポンプ28の流出口には,他端が嫌気槽3の水面の真上に位置する第四返送管30の一端が接続されている。これにより,嫌気槽3,無酸素槽4,好気槽5での一連の浄化処理を繰り返し行うことができるので,浄化処理の品質を高めることが可能となる。
なお,好気槽5は,上流側の好気槽5aと,下流側の好気槽5bと,からなっている。そして,無酸素槽4と上流側の好気槽5aとが,底部で連通孔13を介して直接繋がっている。また,第一返送管25の他端は,上流側の好気槽5a内に位置している。また,第三返送管29の他端は,下流側の好気槽5b内に位置している。
また,無酸素槽4,好気槽5においては,遠赤外線ランプにより,微生物の活性化と保温断熱効果が高められるように工夫されている。
The wastewater purified by the oxygen-free tank 4 is moved to the aerobic tank 5 through the communication hole 13. The aerobic tank 5 is charged with nitrifying bacteria which are aerobic bacteria. Then, the wastewater purified by the anoxic tank 4 is aerated in the aerobic tank 5, and the oxidative decomposition of the organic substances by the aerobic bacteria introduced and cultured in the aerobic tank 5 is performed. Nitrification reaction to form nitric acid and nitrite is performed by oxidizing bacteria and nitrite oxidizing bacteria.
In FIG. 2, reference numeral 61 indicates a microbial carrier on which nitrifying bacteria are fixed.
A self-priming pump 28 is installed above the oxygen-free tank 4. The other end is connected to the inflow port of the self-priming pump 28, and the other end is anaerobic at the outflow port of the self-priming pump 28. One end of the fourth return pipe 30 located directly above the water surface of the tank 3 is connected. Thus, a series of purification treatments in the anaerobic tank 3, the oxygen-free tank 4, and the aerobic tank 5 can be repeatedly performed, so that the quality of the purification processing can be improved.
The aerobic tank 5 is composed of an upstream aerobic tank 5a and a downstream aerobic tank 5b. The anoxic tank 4 and the aerobic tank 5a on the upstream side are directly connected to each other at the bottom via the communication hole 13. The other end of the first return pipe 25 is located in the upstream aerobic tank 5a. The other end of the third return pipe 29 is located inside the aerobic tank 5b on the downstream side.
Further, in the oxygen-free tank 4 and the aerobic tank 5, far-infrared lamps are devised so as to enhance the activation of microorganisms and the heat insulation effect.
好気槽5で浄化処理された汚排水は,連通管14を介して促進酸化槽6に移動される。そして,好気槽5で浄化処理された汚排水は,促進酸化槽6内で酸化分解により浄化処理される。
図8から図10に示すように,促進酸化槽6には,スカムポンプ31が浮設され,当該スカムポンプ31には,他端が嫌気槽3の水面の真上に位置する第五返送管32の一端が接続されている。これにより,促進酸化槽6内に流入・発生した微細固形物を,嫌気槽3に返送し,固液分離機20の吐出口から吐出して除去できるようにされている。
The dirty waste water purified in the aerobic tank 5 is moved to the accelerated oxidation tank 6 via the communication pipe 14. Then, the wastewater purified by the aerobic tank 5 is purified by oxidative decomposition in the accelerated oxidation tank 6.
As shown in FIGS. 8 to 10, a scum pump 31 is floated in the accelerated oxidation tank 6, and the other end of the scum pump 31 is located in the fifth return pipe 32 located directly above the water surface of the anaerobic tank 3. One end is connected. As a result, the fine solid matter that has flowed into and generated in the accelerated oxidation tank 6 can be returned to the anaerobic tank 3 and discharged from the discharge port of the solid-liquid separator 20 to be removed.
図8から図11(a)に示すように,本実施の形態の汚排水浄化システム53は,インライン促進酸化装置(マイクロバブル発生器)62を備えており,促進酸化槽6内においてマイクロバブルを発生させることができるようにされている。そして,かかる構成によれば,促進酸化槽6内に流入・発生した微細固形物を浮遊させ,スカムポンプ31によって嫌気槽3に返送しやすくなるので,システムからの微細固形物の除去を促進させることができる。 As shown in FIG. 8 to FIG. 11A, the sewage and wastewater purification system 53 of the present embodiment includes an in-line accelerated oxidation device (micro bubble generator) 62, and generates micro bubbles in the accelerated oxidation tank 6. It can be generated. Further, according to such a configuration, the fine solid matter that has flowed into and generated in the accelerated oxidation tank 6 is suspended and easily returned to the anaerobic tank 3 by the scum pump 31, so that the removal of the fine solid material from the system is promoted. You can
より具体的には,インライン促進酸化装置(マイクロバブル発生器)62は,促進酸化装置本体63と,促進酸化槽6内に設置され,揚水管64を介して促進酸化装置本体63の一端に接続された水中ポンプ65と,促進酸化装置本体63の他端に接続された放出管66と,を備えている。
促進酸化装置本体63は,揚水管64に接続されたインジェックト型ナノマイクロバブル発生ノズル67と,当該ナノマイクロバブル発生ノズル67と放出管66との間に順に配置された,気液混合管68と,円筒型超音波噴射振動子69と,を備えており,ナノマイクロバブル発生ノズル67部分にオゾン(O3)ガス,過酸化水素水(H2O2)を単独もしくは組み合わせて送り込むことができるようにされている。
促進酸化槽6内には,円筒タンクからなる電気分解槽33が同心状に配置されており,電気分解槽33の内周面には,TiO2陽陰極板46a,46bが配置されている。そして,促進酸化槽6と電気分解槽33は,底部で連通孔47を介して直接繋がっている。なお,インライン促進酸化装置(マイクロバブル発生器)62の水中ポンプ65は,電気分解槽33の底部に設置されており,放出管66は,電気分解槽33の外側に配置されている。また,図8,図10中,参照符号70は,槽内に有機酸であるフミン酸(humic acid)を溶出させる腐植土を示している。
なお,促進酸化槽6内の円筒タンクの素材については特に限定する必要はないが,典型的には,PVC(ポリ塩化ビニル)製のものを用いればよい。
More specifically, the in-line accelerated oxidizer (micro bubble generator) 62 is installed in the accelerated oxidizer main body 63 and the accelerated oxidization tank 6, and is connected to one end of the accelerated oxidizer main body 63 via the pumping pipe 64. The submersible pump 65 and the discharge pipe 66 connected to the other end of the accelerated oxidation device main body 63 are provided.
The accelerated oxidizer main body 63 includes an injected nano-micro-bubble generating nozzle 67 connected to the pumping pipe 64, and a gas-liquid mixing pipe 68 arranged in order between the nano-micro-bubble generating nozzle 67 and the discharge pipe 66. , A cylindrical ultrasonic jet oscillator 69, and ozone (O 3 ) gas and hydrogen peroxide solution (H 2 O 2 ) can be sent alone or in combination to the nano-micro bubble generating nozzle 67 portion. Is being done.
An electrolysis tank 33 composed of a cylindrical tank is concentrically arranged in the accelerated oxidation tank 6, and TiO2 positive and negative cathode plates 46a and 46b are arranged on the inner peripheral surface of the electrolysis tank 33. The accelerated oxidation tank 6 and the electrolysis tank 33 are directly connected to each other at the bottom via the communication hole 47. The submersible pump 65 of the in-line accelerated oxidizer (micro bubble generator) 62 is installed at the bottom of the electrolysis tank 33, and the discharge pipe 66 is arranged outside the electrolysis tank 33. Further, in FIGS. 8 and 10, reference numeral 70 indicates humus soil in which humic acid which is an organic acid is eluted in the tank.
The material of the cylindrical tank in the accelerated oxidation tank 6 is not particularly limited, but typically, a material made of PVC (polyvinyl chloride) may be used.
以上の構成を備えた促進酸化槽6により,意図的にヒドロキシルラジカルを発生させ,酸化力を向上・促進させることが可能となる。すなわち,オゾンや過酸化水素,さらには紫外線(UV)などを組み合わせて用いることにより,強力な酸化剤であるOHラジカルを発生させ,水中の難分解性汚染物質を分解・除去することが可能となる。特に,ダイオキシン類や環境ホルモン,農薬などの微料汚染物質の分解・除去に優れた効果を発揮することが期待できる。また,オゾンや過酸化水素,紫外線(UV),超音波,ナノマイクロバブルなどを使用するため,分解後の主たる生成物は,酸素や水であるため,二次廃棄物がほとんど発生しないという効果が得られる。さらに,オゾンを用いるなどにより,汚排水における脱色や脱臭,COD低減,殺菌などの効果も同時にもたらすことが可能となる。
また,促進酸化槽6における酸化分解において,上記のように,さらに電気分解を組み合わせることにより,促進酸化槽6における酸化分解をさらに効率良く行うことが可能となる。
With the accelerated oxidation tank 6 having the above configuration, it is possible to intentionally generate hydroxyl radicals and improve/promote the oxidizing power. That is, it is possible to decompose and remove persistent pollutants in water by generating OH radicals, which are strong oxidizers, by using ozone, hydrogen peroxide, and ultraviolet (UV) in combination. Become. In particular, it can be expected to exert an excellent effect in decomposing/removing minute pollutants such as dioxins, environmental hormones, and agricultural chemicals. In addition, since ozone, hydrogen peroxide, ultraviolet rays (UV), ultrasonic waves, nano-microbubbles, etc. are used, the main products after decomposition are oxygen and water, so secondary waste is hardly generated. Is obtained. Furthermore, by using ozone, it is possible to bring about effects such as decolorization and deodorization in wastewater, COD reduction, and sterilization at the same time.
Further, in the oxidative decomposition in the accelerated oxidation tank 6, by further combining electrolysis as described above, the oxidative decomposition in the accelerated oxidation tank 6 can be performed more efficiently.
さらに,図11,図12,図13に示すように,同心円筒状の促進酸化槽6および電気分解槽33とインライン促進酸化装置62との組合せによれば,ナノマイクロバブル発生ノズル67と気液混合管68と円筒型超音波噴射振動子69とによって生成される螺旋流が旋回流となり,反応を促進することとなる。すなわち,円筒状の電気分解槽33およびインライン促進酸化装置62を備えた本実施の形態の促進酸化槽(旋回流(渦流)式促進酸化槽)6の構成によれば,従来型促進酸化槽に比べて効率的に撹拌できるため,(1)有機物との反応効率が良い,(2)反応速度が速い,(3)反応死角が無い,(4)必要オゾン量が少なくて済む,(5)ランニングコストが低い,などの効果が得られる。
この場合,ナノマイクロバブル(微細気泡)は,旋回流によって10から50μm径の気泡となり,1から10mm程度のミリバブルに比べて溶解率が高くなる。すなわち,円筒状の電気分解槽33およびインライン促進酸化装置62を備えた本実施の形態の促進酸化槽(旋回流(渦流)式促進酸化槽)6の構成によれば,オゾンガスを溶解させるための加圧溶解タンクを用いることなく溶解率を高めることができる。
Further, as shown in FIGS. 11, 12, and 13, according to the combination of the concentric cylindrical promoted oxidation tank 6 and the electrolysis tank 33 and the in-line promoted oxidation apparatus 62, the nano/micro bubble generating nozzle 67 and the gas/liquid are used. The spiral flow generated by the mixing pipe 68 and the cylindrical ultrasonic jet oscillator 69 becomes a swirling flow, which promotes the reaction. That is, according to the configuration of the accelerated oxidation tank (swirl type (accelerated flow type) accelerated oxidation tank) 6 of the present embodiment, which includes the cylindrical electrolysis tank 33 and the in-line accelerated oxidation device 62, the conventional accelerated oxidation tank is Compared to the other, because it can be stirred more efficiently, (1) the reaction efficiency with organic substances is good, (2) the reaction speed is fast, (3) there is no reaction blind spot, (4) the required ozone amount is small, (5) Effects such as low running cost are obtained.
In this case, the nano-micro bubbles (fine bubbles) become bubbles having a diameter of 10 to 50 μm due to the swirling flow, and have a higher dissolution rate than the milli bubbles of about 1 to 10 mm. That is, according to the configuration of the accelerated oxidation tank (swirl flow (vortex) type accelerated oxidation tank) 6 of the present embodiment, which is provided with the cylindrical electrolysis tank 33 and the in-line accelerated oxidation device 62, it is possible to dissolve ozone gas. The dissolution rate can be increased without using a pressure dissolution tank.
図7から図9に示すように,促進酸化槽6で浄化処理された汚排水は,連通孔57を介して生物曝気槽54に移動される。そして,促進酸化槽6で浄化処理された汚排水は,生物曝気槽54内で生物処理により浄化処理される。図8中,参照符号71は,生物処理に用いられる微生物が固定される微生物担体を示している。 As shown in FIGS. 7 to 9, the sewage drainage purified in the accelerated oxidation tank 6 is moved to the biological aeration tank 54 through the communication hole 57. Then, the sewage drainage purified in the accelerated oxidation tank 6 is purified by biological treatment in the biological aeration tank 54. In FIG. 8, reference numeral 71 indicates a microbial carrier on which microorganisms used for biological treatment are fixed.
生物曝気槽54で浄化処理された汚排水は,連通管15を介して第一膜分離槽7に移動される。そして,生物曝気槽54で浄化処理された汚排水は,第一膜分離槽7内で膜分離により浄化処理される。
第一膜分離槽7は,後述する第二膜分離槽10と比較すると,いわゆる粗分離としての性質を有するものであり,膜(メンブレイン)としてはUF膜(限外ろ過膜)49が用いられている。
図8中,参照符号50は散気管を示しており,当該散気管50は,活性汚泥への酸素供給と気泡の上昇流による膜面洗浄の機能を果たす。
The wastewater that has been purified by the biological aeration tank 54 is moved to the first membrane separation tank 7 via the communication pipe 15. Then, the wastewater that has been purified by the biological aeration tank 54 is purified by membrane separation in the first membrane separation tank 7.
The first membrane separation tank 7 has a so-called rough separation property as compared with a second membrane separation tank 10 described later, and a UF membrane (ultrafiltration membrane) 49 is used as a membrane (membrane). Has been.
In FIG. 8, reference numeral 50 indicates an air diffusing tube, and the air diffusing tube 50 performs the function of supplying oxygen to the activated sludge and cleaning the membrane surface by the upward flow of bubbles.
第一膜分離槽7で浄化処理された汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられる。そして,第一膜分離槽7で浄化処理された汚排水は,オゾン接触槽8内でオゾンにより浄化処理される。
図8中,参照符号51は水中ポンプ式のナノマイクロバブルインジェックトを示しており,当該ナノマイクロバブルインジェックト51により,オゾンを含むナノマイクロバブルを発生させて,第一膜分離槽7で浄化処理された汚排水をさらに浄化処理することができるようにされている。また,参照符号72は,光触媒であるTiO2ボールを示しており,当該TiO2ボールに紫外線を照射するだけで殺菌処理が可能となる。
The wastewater that has been purified in the first membrane separation tank 7 is pumped to the ozone contact tank 8 by the self-priming pump 18. Then, the wastewater purified by the first membrane separation tank 7 is purified by ozone in the ozone contact tank 8.
In FIG. 8, reference numeral 51 indicates a submersible pump-type nano-micro bubble injector, and the nano-micro bubble injector 51 generates ozone-containing nano-micro bubbles, and the first membrane separation tank 7 The sewage and wastewater that has been purified by the above method can be further purified. Further, reference numeral 72 indicates a TiO 2 ball which is a photocatalyst, and sterilization can be performed only by irradiating the TiO 2 ball with ultraviolet rays.
オゾン接触槽8で浄化処理された汚排水は,連通管16を介して生物活性炭槽9に移動される。そして,オゾン接触槽8で浄化処理された汚排水は,生物活性炭槽9内で生物活性炭52により浄化処理される。 The dirty wastewater purified by the ozone contact tank 8 is moved to the biological activated carbon tank 9 through the communication pipe 16. Then, the sewage drainage purified in the ozone contact tank 8 is purified in the biological activated carbon tank 9 by the biological activated carbon 52.
次いで,上記したように,生物活性炭槽9で浄化処理された汚排水は,処理水槽55に貯められる。処理水槽55に貯められた処理水は,第二膜分離槽10に移送され,MF膜(精密ろ過膜),NF膜(ナノろ過膜)などを用いた膜分離により浄化処理されて処理水槽55に返送される。そして,水質が政令で定める技術上の基準に適合していれば,河川等に放流される。一方,水質が政令で定める技術上の基準に適合していなければ,河川等に放流されることなく,産業用水として使用される。また,第二膜分離槽10でRO膜(逆浸透膜)を用いた膜分離により浄化処理されて得られた処理水は,精製水槽56に貯められ,精製水(飲用水)として使用される。 Next, as described above, the sewage drainage purified by the biological activated carbon tank 9 is stored in the treated water tank 55. The treated water stored in the treated water tank 55 is transferred to the second membrane separation tank 10 and purified by membrane separation using an MF membrane (microfiltration membrane), an NF membrane (nanofiltration membrane), etc. Will be returned to. If the water quality meets the technical standards specified by the Cabinet Order, it will be discharged into rivers. On the other hand, if the water quality does not meet the technical standards specified by the Cabinet Order, it will be used as industrial water without being discharged into rivers. The treated water obtained by the purification treatment by the membrane separation using the RO membrane (reverse osmosis membrane) in the second membrane separation tank 10 is stored in the purified water tank 56 and is used as the purified water (drinking water). ..
本実施の形態の汚排水浄化システム53も,例えば,トイレ室の汚水槽(汚排水発生源)から供給される汚排水の浄化処理に適用することができる。 The wastewater purification system 53 of the present embodiment can also be applied to, for example, a purification process of wastewater supplied from a wastewater tank (sewage source) in a toilet room.
なお,本実施の形態においては,オゾンガスと過酸化水素水混合注入型のインライン促進酸化装置を用いる場合を例に挙げて説明したが,必ずしもかかる構成の促進酸化装置に限定されるものではない。例えば,図11(b)に示すようなオゾン水と過酸化水素水分離注入型のインライン促進酸化装置73を用いてもよい。
より具体的には,インライン促進酸化装置73は,促進酸化装置本体74と,促進酸化槽6内に設置され,揚水管64を介して促進酸化装置本体74の一端に接続された水中ポンプ65と,促進酸化装置本体74の他端に接続された放出管66と,を備えている。
促進酸化装置本体74は,揚水管64に接続されたナノマイクロバブル発生ノズル67と,当該ナノマイクロバブル発生ノズル67と放出管66との間に順に配置された,インジェックター75と,円筒型超音波噴射振動子69と,を備えており,ナノマイクロバブル発生ノズル67部分にオゾン水を,インジェックター75部分に過酸化水素水をそれぞれ送り込むことができるようにされている。
In the present embodiment, the case where the ozone gas/hydrogen peroxide solution mixed injection type in-line accelerated oxidation device is used has been described as an example, but the invention is not necessarily limited to the accelerated oxidation device having such a configuration. For example, an ozone water/hydrogen peroxide solution separate injection type in-line promoted oxidation device 73 as shown in FIG. 11B may be used.
More specifically, the in-line accelerated oxidizer 73 includes an accelerated oxidizer main body 74, a submersible pump 65 installed in the accelerated oxidizer tank 6 and connected to one end of the accelerated oxidizer main body 74 via a pumping pipe 64. , A discharge pipe 66 connected to the other end of the accelerated oxidation device main body 74.
The accelerated oxidizer main body 74 includes a nano-micro bubble generating nozzle 67 connected to the pumping pipe 64, an injector 75 arranged in order between the nano-micro bubble generating nozzle 67 and the discharge pipe 66, and a cylindrical type. The ultrasonic injection oscillator 69 is provided so that ozone water can be sent to the nano-micro bubble generating nozzle 67 and hydrogen peroxide water can be sent to the injector 75.
上記のとおり,本発明について説明を行ってきたが,本発明の有用性について,補足して説明を行う。
昨今,有機物処理について,下記が技術的課題として重要となっている。
(1) 高分子凝集剤など化学薬品を排除し,産業廃棄物の処理量を低減すること。
(2) 世界的な水資源不足問題を解消するために,汚排水の放流処理はもちろんのこと,産業用水として再使用が可能な程度にまで分解・精製処理が可能であること。
(3) コンパクトで経済的であること。
(4) 畜産糞尿処理の脱色や微量化学物質,病原性微生物の除去などの難分解性物質の浄化処理が可能であること。
Although the present invention has been described above, the usefulness of the present invention will be supplementarily described.
Recently, the following technical issues have become important as regards organic matter treatment.
(1) Eliminate chemicals such as polymer flocculants to reduce the amount of industrial waste processed.
(2) In order to solve the global water resource shortage problem, not only the discharge treatment of sewage and wastewater, but also the decomposition and purification treatment to the extent that it can be reused as industrial water.
(3) Be compact and economical.
(4) Decontamination of livestock manure treatment and removal of trace chemicals and pathogenic microorganisms and purification of persistent substances are possible.
汚染水処理については,従来,微生物処理方式が採用されてきた。すなわち,微生物処理方式は,汚排水処理コストが比較的安価である点で有用である。しかしながら微生物処理方式は,設備が膨大なものとなりがちであり,難分解性物質の分解ができず万全な処理方法ではないという課題がある。そのため,微生物処理方式において,微生物処理だけでは処理できない難分解性物質を,生物分解処理しやすい易分解性物質へ分解するためには,生物処理方式と組み合わせが可能な新たな処理方法の開発が必要である。 For treating contaminated water, a microbial treatment method has been conventionally used. That is, the microbial treatment method is useful in that the wastewater treatment cost is relatively low. However, the microbial treatment method has a problem that the equipment tends to be enormous and that the hardly decomposable substance cannot be decomposed so that it is not a thorough treatment method. Therefore, in the microbial treatment method, in order to decompose difficult-to-degrade substances that cannot be treated only by microbial treatment into easily degradable substances that are easily biodegradable, it is necessary to develop a new treatment method that can be combined with the biological treatment method. is necessary.
オゾン処理法は,オゾンの強い酸化力により処理対象物を酸化分解することから,生物処理と併用できる方法のひとつである。
特にオゾン処理法は,処理に伴って汚泥などの二次廃棄物が生じないことや反応後オゾンが無害な酸素になることから,溶存酸素が必要な微生物処理方式には極めて有用な処理技術である。
しかしながら,オゾンを単独で用いるオゾン処理法では,処理水中の亜硝酸態窒素や有機性物質などの還元性物質がオゾンと反応し消失してしまう一方,オゾンと反応性が低い物質もあり,分解が困難な物質がある点で課題を有するものである。
The ozone treatment method is one of the methods that can be used in combination with biological treatment because the object to be treated is oxidatively decomposed by the strong oxidizing power of ozone.
In particular, the ozone treatment method is a very useful treatment technology for microbial treatment methods that require dissolved oxygen, because secondary waste such as sludge is not generated along with the treatment and ozone becomes harmless oxygen after the reaction. is there.
However, in the ozone treatment method using ozone alone, reducing substances such as nitrite nitrogen and organic substances in the treated water react with ozone and disappear, while there are also substances that have low reactivity with ozone, and are decomposed. However, there is a problem in that some substances are difficult to obtain.
一方,ヒドロキシルラジカルは,オゾンと比較すると,分解できる物質の幅が広く分解力も高いことから,このヒドロキシラジカルを利用したいわゆる促進酸化法(AOP)が開発されている。
しかるに,促進酸化法(AOP)の根幹であるヒドロキシルラジカルを安定的に発生させるために様々な方法が試されているが,これは至っていない状況であり,今も研究が進んでいる状況である。
On the other hand, hydroxyl radicals have a wider range of substances that can be decomposed and have higher decomposing power than ozone, and so-called accelerated oxidation method (AOP) utilizing these hydroxyl radicals has been developed.
However, various methods have been tried in order to stably generate the hydroxyl radical, which is the basis of the accelerated oxidation method (AOP), but this has not been reached and the research is still in progress. ..
本発明は,上述した有機物処理における技術的課題を克服するとともに,ヒドロキシルラジカルの安定的発生とこれの利用に必要な装置を開発し,実用化するものである。 The present invention overcomes the above-mentioned technical problems in the treatment of organic substances, and develops and puts into practical use a device necessary for stable generation of hydroxyl radicals and their use.
本発明の実施態様2は,A2O2式の分解方式を提供しうるものである。以下,A2O2方式について,説明を行う。 Embodiment 2 of the present invention can provide an A2O2 type decomposition method. The A2O2 method will be described below.
1.嫌気槽(A)+無酸素槽(A)+好気槽(O)+(促進酸化槽)+生物曝気槽(O)
A2O2方式は,A2O方式の生物処理法から促進酸化処理後,改めて生物曝気槽を設ける処理方式である。固液分離装置前段に嫌気槽を位置させることで浮上スラッチ,リンを過剰摂取したPAO菌を原水嫌気槽に返送処理する。また,促進酸化槽の前段階で無酸素槽を設け,生物学的窒素とリン除去を行い,窒素除去に必要な炭素源として有機物を利用することで,メタノールの注入を省略することができる。さらに,促進酸化槽を設けて生物処理方式とを組合せることにより,下記の利点ないし技術的特徴を有する。
(1) 活性汚泥法など,従来の生物処理には曝気後沈澱及び脱水処理が必要であったが,促進酸化槽におけるナノマイクロバブルによるスラッチの浮上処理で,沈澱及び脱水処理が不要になる。
(2) 促進酸化槽の過酸化水素を生物処理するとともに,オゾンと過酸化水素は最終的には酸素になり処理水中において高い酸素濃度を維持できるため,これを生物処理(好気性菌による処理)に利用可能である。
(3) オゾン+高分子有機酸触媒剤という,新しい方法のヒドロキシルラジカル生成法を提供するものである。すなわち,促進酸化槽内に腐植土を吊るすことでフミン酸(Humic Acid)やフルボ酸(Fulvic Acid)を放出する。もしくは,液状フミン酸(Humic Acid)フルボ酸(Fulvic Acid)を直接供給する,これらにより,ヒドロキシルラジカル生成の触媒作用を行う。
(4) 促進酸化槽でナノマイクロバブルを利用してスラッチを浮上させ,スカムポンプでの分離処理が出来ることから,沈殿槽と脱水工程が要らない。
(5) 促進酸化槽に最適化された,一体型インライン促進酸化装置の開発。
(6) インジェクターとの一体型の気液注入方法の開発。
(7) 促進酸化槽の構造上の特徴として円筒型とし,旋回流を造る。
(8) ナノマイクロバブル発生ノズルにより効率的溶解が出来るので,従来のオゾン溶存率を高める為の高圧タンクが要らない。
1. Anaerobic tank (A) + Anoxic tank (A) + Aerobic tank (O) + (Promoted oxidation tank) + Biological aeration tank (O)
The A2O2 method is a treatment method in which a biological aeration tank is newly installed after accelerated oxidation treatment from the biological treatment method of the A2O method. By positioning the anaerobic tank at the front stage of the solid-liquid separation device, PAO bacteria that have excessively ingested floating slatch and phosphorus are returned to the raw water anaerobic tank. Further, by providing an oxygen-free tank in front of the accelerated oxidation tank to remove biological nitrogen and phosphorus and utilize organic matter as a carbon source required for nitrogen removal, injection of methanol can be omitted. Furthermore, by providing an accelerated oxidation tank and combining it with a biological treatment system, the following advantages and technical characteristics are provided.
(1) Although conventional biological treatments such as the activated sludge method required sedimentation and dehydration treatments after aeration, the sedimentation and dehydration treatments are no longer necessary due to the flotation treatment of slats by nano-micro bubbles in the accelerated oxidation tank.
(2) As the hydrogen peroxide in the accelerated oxidation tank is biologically treated, ozone and hydrogen peroxide eventually become oxygen, and a high oxygen concentration can be maintained in the treated water, so this is treated as a biological treatment (treatment by aerobic bacteria). ) Is available.
(3) It provides a new method of generating hydroxyl radicals, which is ozone + polymer organic acid catalyst. That is, humic acid (Humic Acid) and fulvic acid (Fulvic Acid) are released by suspending humus in the accelerated oxidation tank. Alternatively, liquid humic acid and fulvic acid are directly supplied, and by these, the catalytic action of hydroxyl radical generation is performed.
(4) Since the slats can be floated by utilizing nano-micro bubbles in the accelerated oxidation tank and separated by the scum pump, the precipitation tank and the dehydration process are not required.
(5) Development of integrated in-line accelerated oxidation equipment optimized for accelerated oxidation tank.
(6) Development of a gas-liquid injection method integrated with the injector.
(7) As a structural feature of the accelerated oxidation tank, it has a cylindrical shape and creates a swirling flow.
(8) Efficient dissolution is possible with the nano-micro bubble generation nozzle, so the conventional high-pressure tank for increasing the ozone dissolution rate is not required.
また,本発明により,システムのコンパクト化と浄化能力の向上が可能となり,下記の利点ないし技術的特徴を有する。
(1) 曝気槽の容量,曝気時間,配管省略などコンパクト化。
(2) 浄化処理副産物や沈殿物などの二次廃棄物の無発生。
(3) 産業廃棄物量の低減と世界的な水資源不足を解消。
(4) 高分子凝集剤などの化学薬品(バルキング解消用,消泡剤など)を排除して最終処理水に化学成分を残さないので産業用水として最適。
(5) 畜産糞尿の固液分離後の固形物は有機肥料のクオリティの向上。
(6) 凝集剤必要時は凝集性バイオポリマー(微生物凝集剤)の開発使用。
Further, according to the present invention, it is possible to make the system compact and improve the purifying ability, and have the following advantages and technical features.
(1) Compact size such as aeration tank capacity, aeration time, and omission of piping.
(2) No secondary waste such as purification by-products and sediments.
(3) Reduction of industrial waste and elimination of global water resource shortage.
(4) Ideal for industrial water because it removes chemicals such as polymer flocculants (for bulking elimination, defoaming agents, etc.) and leaves no chemical components in the final treated water.
(5) The quality of organic fertilizer is improved by the solid matter after solid-liquid separation of livestock manure.
(6) Flocculant When necessary, develop and use flocculating biopolymer (microbial flocculant).
1,53 汚排水浄化システム
3 嫌気槽
4 無酸素槽
5 好気槽
6 促進酸化槽
12,13連通孔
14 連通管
19 水中ポンプ
20 固液分離機(デカンタ)
21 第一移送管
22 第二移送管
31 スカムポンプ
32 第五返送管
1,53 Wastewater purification system 3 Anaerobic tank 4 Oxygen-free tank 5 Aerobic tank 6 Accelerated oxidation tank 12, 13 Communication hole 14 Communication pipe 19 Submersible pump 20 Solid-liquid separator (decanter)
21 first transfer pipe 22 second transfer pipe 31 scum pump 32 fifth return pipe
Claims (11)
前記嫌気槽で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽と,
前記無酸素槽で浄化処理された汚排水を好気性菌により浄化処理する好気槽と,
前記好気槽で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽と,
を備え,
これら各槽が他のいずれか又は複数の槽に近接して配置され,各槽における水位が同一に保持される汚排水浄化システムであって,
前記嫌気槽には,断続的に起動する水中ポンプが設置され,
前記水中ポンプには,他端が固液分離機の流入口に接続された第一移送管の一端が接続され,
前記固液分離機の流出口には,他端が前記無酸素槽内に位置する第二移送管の一端が接続され,
前記促進酸化槽には,スカムポンプが浮設され,前記スカムポンプには,他端が前記嫌気槽内に位置する返送管の一端が接続されており,
さらに,
前記促進酸化槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,
前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,
前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,
を備えることを特徴とする汚排水浄化システム。 An anaerobic tank for purifying sewage discharged from a sewage generation source with anaerobic bacteria,
An oxygen-free tank for purifying the wastewater purified by the anaerobic tank with denitrifying bacteria,
An aerobic tank for purifying dirty wastewater purified by the anoxic tank with aerobic bacteria;
An accelerated oxidation tank for purifying the wastewater purified by the aerobic tank by oxidative decomposition;
Equipped with
A wastewater purification system in which each of these tanks is placed in proximity to any one or more of the other tanks, and the water level in each tank is kept the same,
An intermittent submersible pump is installed in the anaerobic tank,
One end of a first transfer pipe, the other end of which is connected to the inlet of the solid-liquid separator, is connected to the submersible pump,
The solid-liquid separator has an outlet connected to one end of a second transfer pipe, the other end of which is located in the oxygen-free tank.
A scum pump is floated in the accelerated oxidation tank, and one end of a return pipe whose other end is located in the anaerobic tank is connected to the scum pump,
further,
A first membrane separation tank for purifying the wastewater purified by the accelerated oxidation tank by membrane separation;
An ozone contact tank for purifying the wastewater purified by the first membrane separation tank with ozone,
A biological activated carbon tank for purifying the wastewater purified by the ozone contact tank with biological activated carbon;
A sewage and wastewater purification system comprising:
前記嫌気槽で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽と,
前記無酸素槽で浄化処理された汚排水を好気性菌により浄化処理する好気槽と,
前記好気槽で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽と,
を備え,
これら各槽が他のいずれか又は複数の槽に近接して配置され,各槽における水位が同一に保持される汚排水浄化システムであって,
前記嫌気槽には,断続的に起動する水中ポンプが設置され,
前記水中ポンプには,他端が固液分離機の流入口に接続された第一移送管の一端が接続され,
前記固液分離機の流出口には,他端が前記無酸素槽内に位置する第二移送管の一端が接続され,
前記促進酸化槽には,スカムポンプが浮設され,前記スカムポンプには,他端が前記嫌気槽内に位置する返送管の一端が接続されており,
さらに,
前記促進酸化槽で浄化処理された汚排水を生物処理により浄化処理する生物曝気槽と,
前記生物曝気槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,
前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,
前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,
を備えることを特徴とする汚排水浄化システム。 An anaerobic tank for purifying sewage discharged from a sewage generation source with anaerobic bacteria,
An oxygen-free tank for purifying the wastewater purified by the anaerobic tank with denitrifying bacteria,
An aerobic tank for purifying dirty wastewater purified by the anoxic tank with aerobic bacteria;
An accelerated oxidation tank for purifying the wastewater purified by the aerobic tank by oxidative decomposition;
Equipped with
A wastewater purification system in which each of these tanks is placed in proximity to any one or more of the other tanks, and the water level in each tank is kept the same,
An intermittent submersible pump is installed in the anaerobic tank,
One end of a first transfer pipe, the other end of which is connected to the inlet of the solid-liquid separator, is connected to the submersible pump,
The solid-liquid separator has an outlet connected to one end of a second transfer pipe, the other end of which is located in the oxygen-free tank.
A scum pump is floated in the accelerated oxidation tank, and one end of a return pipe whose other end is located in the anaerobic tank is connected to the scum pump,
further,
A biological aeration tank for purifying the wastewater purified by the accelerated oxidation tank by biological treatment;
A first membrane separation tank for purifying the wastewater purified by the biological aeration tank by membrane separation;
An ozone contact tank for purifying the wastewater purified by the first membrane separation tank with ozone,
A biological activated carbon tank for purifying the wastewater purified by the ozone contact tank with biological activated carbon ;
A sewage and wastewater purification system comprising:
前記処理水槽に貯められた処理水が移送され,当該処理水を膜分離により浄化処理する第二膜分離槽をさらに備えた請求項2に記載の汚排水浄化システム。 A treated water tank that stores the wastewater purified by the biological activated carbon tank,
The wastewater purification system according to claim 2, further comprising a second membrane separation tank for transferring the treated water stored in the treated water tank and purifying the treated water by membrane separation.
Membranes used in the first membrane separation tank or the second membrane separation tank are MF membrane (microfiltration membrane), UF membrane (ultrafiltration membrane), NF membrane (nanofiltration membrane) or RO membrane (reverse osmosis membrane). The wastewater purification system according to claim 9 or 10, which is selected from any one or a plurality of the above.
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