JPH11262789A - Biological treatment method of waste organic matter system - Google Patents
Biological treatment method of waste organic matter systemInfo
- Publication number
- JPH11262789A JPH11262789A JP10114064A JP11406498A JPH11262789A JP H11262789 A JPH11262789 A JP H11262789A JP 10114064 A JP10114064 A JP 10114064A JP 11406498 A JP11406498 A JP 11406498A JP H11262789 A JPH11262789 A JP H11262789A
- Authority
- JP
- Japan
- Prior art keywords
- microorganism
- treatment
- bed
- microorganisms
- organic matter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Biological Treatment Of Waste Water (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、廃有機物の系の生物学
的処理に関するものであり、特にし尿を含む高濃度有機
廃水、生ごみを生物学的に処理をする場合に利用され
る。即ち、製造業、外食産業、環境浄化等の産業が利用
分野である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biological treatment of a system of waste organic matter, and more particularly to a biological treatment of high-concentration organic wastewater including human waste and garbage. That is, industries such as the manufacturing industry, the restaurant industry, and environmental purification are the fields of use.
【０００２】[0002]
【従来の技術】本発明に近い従来の代表的技術は、特許
公報 平２−３０７６０、同 平３−７３３５８、同
平４−１０３９８等である。これらは、それぞれ、木質
細片を用いて汚泥を固相で処理する技術、木質細片と無
機多孔粒体の混合物を固定ろ床としてそれに廃水を注加
して処理する技術、木質細片を流動床として排水を処理
する技術である。その他に、微生物をポリビニルアルコ
ールのゲルで包み込んだ粒状物を流動床として用いて廃
水を処理する技術がある。これら従来技術の欠点は、前
３者にあっては、微生物に分解され得る天然の有機物を
微生物の着床材として使用することにある。即ち、着床
体自身がＢＯＤ、ＣＯＤ負荷になっており、定期的に着
床材の補充が必要となる。一方、微生物をポリビニルア
ルコールゲルで包んだものを用いる技術は、被処理水と
微生物との接触が少なくなることである。それは被処理
水がゲルの中を拡散するのに時間がかかるからである。2. Description of the Related Art Conventional representative technologies close to the present invention are disclosed in Japanese Patent Application Laid-Open Nos. Hei 2-30760, Hei 3-73358 and Hei 3-73358.
4-10398. These are technologies for treating sludge in solid phase using wood chips, technology for treating wastewater by pouring wastewater into it as a fixed filter bed using a mixture of wood chips and inorganic porous particles. This technology treats wastewater as a fluidized bed. In addition, there is a technology for treating wastewater using a granular material in which microorganisms are wrapped in a polyvinyl alcohol gel as a fluidized bed. The drawbacks of these prior arts are that, in the former three, natural organic matter that can be decomposed into microorganisms is used as a microorganism implantation material. That is, the flooring body itself has a BOD and COD load, and it is necessary to periodically replenish the flooring material. On the other hand, the technique of using a microorganism wrapped in a polyvinyl alcohol gel reduces contact between the water to be treated and the microorganism. This is because it takes time for the treated water to diffuse through the gel.
【０００３】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、従来の廃有機物系の生物学的処理において
特に、微生物の着床材として木質細片を用いる技術と、
微生物をポリビニルアルコールゲルで包んだ粒状体を流
動床として用いる技術のそれぞれか持っている欠点であ
る、前者での着床材の微生物分解性、後者での被処理水
と微生物との接触の非効率性を改善し、より良い微生物
の着床材とそれを用いたより効率の良い廃有機物系の微
生物学的処理方法を提供することである。The problems to be solved by the present invention are, in the conventional biological treatment of waste organic matter, in particular, a technique of using wood chips as a bed material for microorganisms,
The disadvantages of each of the technologies using a granular material in which microorganisms are wrapped in a polyvinyl alcohol gel as a fluidized bed are the disadvantages of the former: the biodegradability of the implantation material in the former, and the latter in the case of contact between the water to be treated and the microorganisms in the latter. It is an object of the present invention to improve the efficiency and to provide a better microorganism implantation material and a more efficient waste organic matter microbiological treatment method using the same.
【０００４】[0004]
【課題を解決するための手段】前述の課題を解決するた
めの手段について鋭意研究した結果、本発明者が到達し
た手段は、微生物に対して安定であり、かつ微生物親和
性が良く、比表面積が大きく、水を含んだときの比重が
１．０５から１．７０の範囲に入る材料を、０．５ｍｍ
から１０ｍｍの粒子径の小片にし、微生物の着床材とし
て、流動床もしくは固定ろ床として用い、廃有機物系を
生物学的に処理する方法である。ここで廃有機物系と
は、有機物を含む廃水や生ごみ等、液状、固形状の有機
系廃棄物をまとめて言ったものである。本発明を更に詳
しく説明する。本発明が到達した微生物の着床体は、無
機物質で、比表面積の大きなゼオライト、パーライト、
ケイ藻土、シラス等の表面の１部または全部を水不溶性
のポリビニルアルコールゲルで覆い微生物との親和性を
より大きくし、微生物の着床を良くした細粒状物であ
る。また、今一つの到達点は、合成繊維の布の小片を微
生物の着床材として用いることである。本発明者は、染
色工場から出る端切れ布の有効な利用法として、布を小
片にカットし、糸のほつれを防ぐ意味で熱処理をしたも
のが微生物の着床性に優れている事実を発見し、それを
微生物の着床材として、廃有機物系の生物学的処理時
に、流動床もしくは固定ろ床として使用する方法の発明
に至ったものである。これらの微生物着床材は、単独も
しくは２種類以上を混合して使用するとが出来る。ま
た、本質細片を微生物の着床材として用いて運転中の廃
水または生ごみの処理装置に本発明の微生物着床材を混
入して使用することも出来る。この際、木質細片は微生
物によって分解され、その量が減少して、本発明の着床
材の割合が大きくなる。無機多孔質細粒状物表面の１部
または全部を水不溶性のポリビニルアルコールゲルで覆
う方法として、本発明では次の方法を採用した。即ち、
当該無機細粒状物を１から５％ポリビニルアルコール水
溶液に浸した後、液を切ったものを、−２０℃以下の温
度で繰り返し数度処理すると言う従来の方法である。更
に、ゲルの表面をフォルマール化して水不溶性を完全に
することも行った。As a result of intensive studies on the means for solving the above-mentioned problems, the means reached by the present inventors is stable to microorganisms, has good affinity for microorganisms, and has a specific surface area. Is large and the specific gravity when containing water is in the range of 1.05 to 1.70 is 0.5 mm
This is a method of biologically treating waste organic matter by using a small bed having a particle size of from 10 mm and using it as a bed material for microorganisms, as a fluidized bed or a fixed filter bed. Here, the term "waste organic substance" refers to liquid or solid organic waste such as wastewater or garbage containing organic substances. The present invention will be described in more detail. The microorganism-implanted body reached by the present invention is an inorganic substance, zeolite having a large specific surface area, perlite,
A fine granular material in which part or all of the surface of diatomaceous earth, shirasu, or the like is covered with a water-insoluble polyvinyl alcohol gel to increase the affinity for microorganisms and improve the implantation of microorganisms. Another point is to use a small piece of synthetic fiber cloth as a landing material for microorganisms. The present inventor has found that as an effective use of cut pieces of cloth coming out of a dyeing factory, a cloth cut into small pieces and heat-treated in a sense of preventing fraying of the yarn is excellent in implantation of microorganisms. Thus, the invention of a method of using it as a bed material for microorganisms and as a fluidized bed or a fixed filter bed in biological treatment of waste organic matter during biological treatment has been reached. These microorganism implantation materials can be used alone or in combination of two or more. In addition, the microbe-implanted material of the present invention can be mixed with an operating wastewater or garbage disposal apparatus using the essential strips as a microorganism-implanted material. At this time, the wood fragments are decomposed by microorganisms, the amount thereof is reduced, and the proportion of the flooring material of the present invention is increased. In the present invention, the following method was employed as a method of covering a part or all of the surface of the inorganic porous fine particles with a water-insoluble polyvinyl alcohol gel. That is,
This is a conventional method in which the inorganic fine particles are immersed in a 1 to 5% aqueous solution of polyvinyl alcohol, and the cut liquid is repeatedly treated several times at a temperature of -20 ° C or lower. Further, the surface of the gel was formalized to complete water insolubility.
【０００５】[0005]
【作用】本発明の作用について説明をする。廃有機物系
の一般的な生物学的処理における最大の問題点は余剰汚
泥の発生にある。しかし、理論的には、処理を行う微生
物に対するＢＯＤ負荷量がある値より小さくなれば、余
剰汚泥の発生は無くなるのである。ただ処理システム自
体が大きくなり、日本のような狭い所では、返ってコス
ト高になる。即ち、余剰汚泥を処分するコストのほう
が、大きな余剰汚泥がでないシステムを作るよりもコス
ト的には有利であると言うことである。従って、従来か
ら使っている処理システム、即ち、余剰汚泥が出ている
システムで、余剰汚泥が出なくなる方法を作りだす必要
があり、それが求められている。生物学的排水処理シス
テムについて言うなら、処理槽での活性汚泥濃度をいか
に高く保って運転できるか、ということである。標準活
性汚泥処理システムでは、処理槽でのＭＬＳＳが３００
０ｐｐｍ前後で運転している場合が多い。即ち、処理槽
のＭＬＳＳを３０００ｐｐｍより高くすると、沈殿槽で
の汚泥の沈降容積が大きくなり、固液分離が出来ず、放
流水中への汚泥の溢流が起こるのである。処理槽での活
性汚泥濃度が高く、汚泥と処理液との分離が可能なシス
テムが幾つか考えられているが、何れも現実の場での採
用には至っていないのが現状である。本発明は、此の余
剰汚泥の発生の問題を解決すると共に、一つの処理装置
のなかで好気的な微生物による処理と嫌気的微生物によ
る処理を同時に行はせ、廃有機物系の処理能力を高める
ものである。即ち、微生物親和性の優れた着床材を開発
し、それを、例えば、活性汚泥法の曝気槽に入れ微生物
を着床させることにより、曝気槽中の微生物濃度を高く
すると共に、着床材の沈降性を利用して、沈殿槽での汚
泥の沈降性を改良して、処理水と汚泥の分離を良くする
ものである。本発明による着床材を採用することで、着
床した微生物の表面部分には好気性菌が、内部には嫌気
性菌が住み付き、通常の活性汚泥法での処理即ち、好気
性菌のみでは分解されない有機物分まで分解が行はれる
ようになり、処理水のＣＯＤの低下につながる。本発明
になる微生物の新しい着床材について詳しく説明する。
未だ実用例は未知だが、前述の、木質細片とポリビニル
アルコールゲルが活性汚泥の曝気槽中で使用される微生
物の着床材として報告されている。それら着床材の持つ
欠点は、前者では微生物に分解されることであり、後者
については、被処理水と着床材の微生物との接触に問題
があることであった。本発明はこれらの欠点を無くした
微生物の着床材を提供するものである。その着床材は、
二つの群に分けることが出来る。一つは、比表面積の大
きな細粒状物の表面の１部または全体を、微生物との親
和性の良いポリビニルアルコールゲルで覆った粒状物で
着床材を作った群で、採用した細粒状物としては、ゼオ
ライト、パーライト、ケイ藻土、シラスなどがある。ま
た、粒状物の径としては、０．５ｍｍから１０ｍｍのも
のが良い。ゲルで覆ったこれら細粒状体の吸水後の比重
は１．０５から１．７０の範囲が良い。今一つは、微生
物に分解されない合成高分子の繊維で織った布の小片を
糸がほつれないように熱処理をしたものを、微生物の着
床材として用いるもので、このものも比表面積が大き
く、微生物が着床しやすいものである。布に使われる合
成繊維としては、ビニロン、ナイロン、ポリエステルが
良い。The operation of the present invention will be described. The biggest problem in general biological treatment of waste organic matter is the generation of excess sludge. However, theoretically, when the BOD load on the microorganism to be treated becomes smaller than a certain value, the generation of excess sludge is eliminated. However, the processing system itself becomes larger, and in narrow places such as Japan, the cost increases. That is, the cost of disposing of excess sludge is more cost-effective than making a system without large excess sludge. Therefore, it is necessary to create a method for eliminating the excess sludge in a conventionally used treatment system, that is, a system in which the excess sludge is generated, which is required. When it comes to biological wastewater treatment systems, it is how high the activated sludge concentration can be maintained in the treatment tank. In the standard activated sludge treatment system, the MLSS in the treatment tank is 300
It is often operated at around 0 ppm. That is, when the MLSS of the treatment tank is higher than 3000 ppm, the sedimentation volume of the sludge in the sedimentation tank increases, solid-liquid separation cannot be performed, and the sludge overflows into the discharge water. Several systems have been considered in which the activated sludge concentration in the treatment tank is high and the sludge can be separated from the treatment liquid. However, none of these systems has been adopted in actual places. The present invention solves the problem of the generation of the excess sludge, and simultaneously performs the treatment with the aerobic microorganism and the treatment with the anaerobic microorganism in one treatment device, thereby increasing the treatment capacity of the waste organic matter. To enhance. That is, by developing a flooring material having excellent microbial affinity, for example, by placing it in an activated sludge aeration tank and allowing the microorganisms to settle, the microorganism concentration in the aeration tank is increased, and The sedimentation of the sludge in the sedimentation tank is improved by utilizing the sedimentation of the wastewater to improve the separation of the treated water and the sludge. By adopting the implantation material according to the present invention, aerobic bacteria are inhabited on the surface portion of the microorganisms that have been implanted, and anaerobic bacteria are inhabited therein, and the treatment by the ordinary activated sludge method, that is, only the aerobic bacteria In this case, the decomposition can be performed to the organic matter that is not decomposed, which leads to a decrease in COD of the treated water. The new implantation material for microorganisms according to the present invention will be described in detail.
Although practical examples are not yet known, the above-mentioned wood chips and polyvinyl alcohol gel have been reported as a bed material for microorganisms used in an activated sludge aeration tank. The disadvantages of these implants are that they are decomposed into microorganisms in the former, and that the latter have a problem in contact between the water to be treated and the microorganisms in the implant. The present invention provides a microorganism-implanted material that eliminates these disadvantages. The flooring material is
They can be divided into two groups. One is a group in which a part of or the entire surface of the fine granular material having a large specific surface area is covered with a polyvinyl alcohol gel having good affinity for microorganisms to form a flooring material, and the fine granular material is employed. Examples include zeolite, perlite, diatomaceous earth, shirasu, and the like. The diameter of the granular material is preferably 0.5 mm to 10 mm. The specific gravity of these fine particles covered with the gel after water absorption is preferably in the range of 1.05 to 1.70. Another is to use small pieces of cloth woven with synthetic polymer fibers that are not decomposed by microorganisms and heat-treated so that the threads do not fray. Is easy to land. As the synthetic fiber used for the cloth, vinylon, nylon and polyester are preferable.
【０００６】本発明になる微生物の着床材の使用法につ
いて説明する。本発明になる微生物の着床材は、単独ま
たは２種以上を混合して使用することが出来る。使用法
は、廃有機物系の廃水を活性汚泥法で処理する場合に
は、曝気槽中に本発明の微生物着床材の１種類以上を、
曝気槽１ｍ３当たり１０ｋｇから１５０ｋｇ投入して、
従来と同じ方法で、生物学的処理を行うものである。ま
た、本発明になる微生物の着床材を固定ろ床として廃有
機物系の廃水の処理に使用する場合には、１種類以上の
着床材を処理用の装置（塔型、プール型等）に詰め、上
部から当該廃水を注入し、下部から出てきた水の浄化が
不十分の場合には、それを再度上部から注入し浄化を完
成さす方法を採用することが出来る。この場合、固定ろ
床の下部から空気を吹き込んだり、固定ろ床を緩やかに
かき混ぜることを行う事も出来る。本発明になる微生物
の着床材を使用することで、着床材の表面部分には好気
性の微生物が、その内側には嫌気性の微生物が着床し
て、廃有機物系の浄化を効率的に進める。The method of using the microorganism-implanted material according to the present invention will be described. The microorganism implantation material according to the present invention can be used alone or in combination of two or more. When the wastewater of the waste organic matter is treated by the activated sludge method, one or more types of the microorganism-implanted material of the present invention are placed in an aeration tank.
And 150kg introduced from the aeration tank 1 m 3 per 10 kg,
The biological treatment is performed in the same manner as in the prior art. In the case where the microorganism-implanted material according to the present invention is used as a fixed filter in the treatment of waste organic wastewater, one or more types of the immobilized material can be treated (tower type, pool type, etc.). If the wastewater from the lower part is insufficiently purified, the wastewater can be injected from the upper part again to complete the purification. In this case, air can be blown from the lower part of the fixed filter bed, or the fixed filter bed can be stirred gently. By using the microorganism-implanting material according to the present invention, aerobic microorganisms are implanted on the surface portion of the immobilizing material, and anaerobic microorganisms are implanted inside the material, thereby efficiently purifying waste organic matter. To advance.
【０００７】[0007]
【実施例】１．通常の活性汚泥による廃水処理装置に、
パーライトの表面をポリビニルアルコールゲルでコート
処理した微生物の着床材を、曝気槽１ｍ３当たりに１０
０ｋｇ投入し、他は従来法と同じ方法で運転を行った
（本発明法１と表示）。また同じ廃水処理装置にパーラ
イト系の着床材の代わりに、ゼオライトの表面をポリビ
ニルアルコールゲでコート処理した着床材を５０ｋｇと
ビニロンの布の小片を５０ｋｇ投入（曝気槽１ｍ３当た
り）は従来法と同じ方法で運転を行った（本発明法２と
表示）。それぞれの結果を、従来法の結果と共に表１に
示した。 尚、本発明法１、２ でのＭＬＳＳ値はろ床の重量を差
し引いてあり、活性汚泥のみの重量であり、従来法と比
較できるようにしたものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a normal activated sludge wastewater treatment system,
10 the surface of the perlite wearing flooring microorganisms optionally coated with polyvinyl alcohol gel, per aeration tank 1 m 3
The operation was performed in the same manner as in the conventional method except that 0 kg was charged (indicated as Method 1 of the present invention). In place of the landing member of pearlitic the same wastewater treatment apparatus, the Chakuyukazai coated treated surface of the zeolite with polyvinyl alcohol gate small pieces 50kg charged cloth 50kg and vinylon (aeration tank 1 m 3 per) Conventional The operation was carried out in the same manner as the method (indicated as method 2 of the present invention). Table 1 shows the results together with the results of the conventional method. The MLSS values in the methods 1 and 2 of the present invention are obtained by subtracting the weight of the filter bed and are the weights of the activated sludge only, so that they can be compared with the conventional method.
【０００８】２．固定ろ床法での実験は、２００リット
ル容ドラム缶と同じ形のものをステンレスの金網（目の
大きさ３ｍｍ）で作り、その中に、容積の８０％の量の
微生物の着床材を水を十分に含ませた後入れた。微生物
の着床材の違いによって食品工場の廃水の処理がどう成
るかを調べた結果を表２に示した。従来使われている杉
材チップを入れたものを従来法と表示した。本発明法
１、および２は表１の試験で使用した着床材を用いたも
のである。廃水の供給の仕方は、各処理槽に毎分１．８
リットルを均一に散水する方法を採用した。処理水は、
処理槽の下から出てきた液であり、そのＣＯＤ値を測定
した。但し、表２の結果は、着床材に微生物が着く間、
１か月間の馴らし運転をしてから、試験期間としたもの
である。 [0008] 2. In the experiment using the fixed filter method, a 200-liter drum with the same shape was made of a stainless steel wire mesh (mesh size: 3 mm). And then put in. Table 2 shows the results of examining how the treatment of wastewater in a food factory depends on the difference in the microorganisms' implantation materials. The one containing conventional cedar chips is indicated as the conventional method. Methods 1 and 2 of the present invention use the landing materials used in the tests in Table 1. The wastewater supply method is 1.8 minutes per minute in each treatment tank.
A method of uniformly spraying liters was adopted. The treated water is
The liquid came out from under the processing tank, and its COD value was measured. However, the results in Table 2 show that while the microorganisms arrive on the flooring material,
After a one-month running-in period, the test period was set.
【０００９】[0009]
【発明の効果】表１および表２の結果から、本発明にな
る微生物の着床材は流動床として使用しても、また、固
定床として使用しても、従来法に勝る処理効果を上げる
ことが実施例で明らかとなった。即ち、流動床として用
いると、活性汚泥濃度を高く保って運転できることか
ら、処理効率がアップするだけでなく、余剰汚泥の発生
が見られなくなった。また、固定床しょうとして使用し
た場合、従来法に比べて、処理能力のアップが明白であ
る。これは、１つはろ床自体が微生物による分解を受け
ないからである。From the results shown in Tables 1 and 2, the microorganism-implanted material according to the present invention, even when used as a fluidized bed or as a fixed bed, has a higher treatment effect than the conventional method. This has been clarified in the examples. That is, when used as a fluidized bed, since the operation can be performed while keeping the activated sludge concentration high, not only the treatment efficiency is improved, but also the generation of excess sludge is not observed. Also, when used as a fixed bed gauze, the processing capacity is clearly improved as compared with the conventional method. This is in part because the filter bed itself is not subject to degradation by microorganisms.
Claims (1)
ライト、ケイ藻土、シラス等の無機多孔物の細粒状物の
表面の１部分または全体を、水不溶性のポリビニールア
ルコールゲルで覆ったそれぞれの細粒状物、ビニロン、
ナイロン、ポリエステル等の合成繊維で織られた布の小
片を熱処理して、糸のほつれを防止した、それぞれの布
の小片、これらの中から１種または２種以上を選び、そ
れを流動床または固定ろ床の主なる材料として用いるこ
とを特徴とする廃有機物系の生物学的処理方法。1. As a microorganism-implanting material, one part or the whole of the surface of a fine granular material of an inorganic porous material such as zeolite, perlite, diatomaceous earth, and shirasu is covered with a water-insoluble polyvinyl alcohol gel. Fine granules, vinylon,
Heat-treating small pieces of cloth woven from synthetic fibers such as nylon and polyester to prevent fraying of yarn, select one or more of these small pieces of cloth, and use them in a fluidized bed or A biological treatment method for waste organic matter, which is used as a main material of a fixed filter bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10114064A JPH11262789A (en) | 1998-03-19 | 1998-03-19 | Biological treatment method of waste organic matter system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10114064A JPH11262789A (en) | 1998-03-19 | 1998-03-19 | Biological treatment method of waste organic matter system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11262789A true JPH11262789A (en) | 1999-09-28 |
Family
ID=14628139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10114064A Pending JPH11262789A (en) | 1998-03-19 | 1998-03-19 | Biological treatment method of waste organic matter system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11262789A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003071493A (en) * | 2001-08-31 | 2003-03-11 | Nitchitsu Co Ltd | Composition for removing nitrate nitrogen, etc., and production method therefor |
| CN102580986A (en) * | 2012-02-10 | 2012-07-18 | 刘杨 | Household waste treatment device |
| CN102992487A (en) * | 2012-12-21 | 2013-03-27 | 农业部环境保护科研监测所 | Movable zeolite algal bed water quality purifier |
| CN106995263A (en) * | 2017-06-06 | 2017-08-01 | 浙江工业大学温州科学技术研究院 | A kind of processing method of electroplating sludge |
-
1998
- 1998-03-19 JP JP10114064A patent/JPH11262789A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003071493A (en) * | 2001-08-31 | 2003-03-11 | Nitchitsu Co Ltd | Composition for removing nitrate nitrogen, etc., and production method therefor |
| CN102580986A (en) * | 2012-02-10 | 2012-07-18 | 刘杨 | Household waste treatment device |
| CN102992487A (en) * | 2012-12-21 | 2013-03-27 | 农业部环境保护科研监测所 | Movable zeolite algal bed water quality purifier |
| CN106995263A (en) * | 2017-06-06 | 2017-08-01 | 浙江工业大学温州科学技术研究院 | A kind of processing method of electroplating sludge |
| CN106995263B (en) * | 2017-06-06 | 2020-07-10 | 浙江工业大学温州科学技术研究院 | Treatment method of electroplating sludge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ruiz-Marin et al. | Growth and nutrient removal in free and immobilized green algae in batch and semi-continuous cultures treating real wastewater | |
| CA2466473C (en) | Integrated hydroponic and fixed-film wastewater treatment systems and associated methods | |
| Pratiwi et al. | Decolourization of remazol black-5 textile dyes using moving bed bio-film reactor | |
| JP2011502776A (en) | Wastewater treatment method and plant including control of dissolved oxygen concentration | |
| MY110852A (en) | Method and device for purifying water | |
| Nowak et al. | Treatment efficiency of fish processing wastewater in different types of biological reactors | |
| JP2002263684A (en) | Method and device for treating waste water by microorganism | |
| JPH1085782A (en) | Bacterium implantation tool | |
| CN100552017C (en) | Efficient nitrogen-cycle bacteria artificial screening and the application in Ecological Recovery of Water and water treatment | |
| US6277279B1 (en) | Method for treating wastewater | |
| KR101170311B1 (en) | Device for reusing rainwater | |
| JPH11262789A (en) | Biological treatment method of waste organic matter system | |
| Feng et al. | Production of unburned calcium silicon filter material (UCSFM) from oyster shell and its performance investigation in an A/O integrated biological aerated filter reactor (A/O-BAF) | |
| JP3488853B2 (en) | Deodorant, deodorizing method, deodorizing member and deodorizing device | |
| EP0949209A3 (en) | Biological process and anoxic and/or aerobic biological reactor for the purification of liquid residues | |
| Westphal et al. | Lime stabilization: effectiveness of two process modifications | |
| KR20240041968A (en) | Systems and methods for reducing pollutants, including carbon, in public facilities, agriculture and manufacturing | |
| CN210711135U (en) | Circulated central authorities aeration effluent treatment plant | |
| KR20020011359A (en) | Combination purifier tank | |
| Nasr | The effect of using microorganisms on sludge reduction in wastewater treatment plant | |
| Benham et al. | INVESTIGATING DAIRY LAGOON EFFLUENT TREATABILITY IN A LABORATORY-SCALE CONSTRUCTEDWETLANDS SYSTEM | |
| JPH0461999A (en) | Treatment of high concentration organic polluted waste water | |
| KR19980045193A (en) | Activated Carbon Coexistence Comprehensive Immobilized Microbial Carrier Using Photocurable Resin and Manufacturing Method Thereof | |
| Geiger et al. | Biological treatment of crab processing plant wastewater | |
| JPH07236897A (en) | Foreign microorganism survival method and environmental purifying method using the same |