JP2548871B2 - Method for producing immobilized carrier - Google Patents
Method for producing immobilized carrierInfo
- Publication number
- JP2548871B2 JP2548871B2 JP4249707A JP24970792A JP2548871B2 JP 2548871 B2 JP2548871 B2 JP 2548871B2 JP 4249707 A JP4249707 A JP 4249707A JP 24970792 A JP24970792 A JP 24970792A JP 2548871 B2 JP2548871 B2 JP 2548871B2
- Authority
- JP
- Japan
- Prior art keywords
- seed sludge
- water
- carrier
- gelled
- producing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000010802 sludge Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 23
- 239000000126 substance Substances 0.000 claims description 16
- 230000008014 freezing Effects 0.000 claims description 13
- 238000007710 freezing Methods 0.000 claims description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 9
- 239000004327 boric acid Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 11
- 238000005469 granulation Methods 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 230000003100 immobilizing effect Effects 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 239000010865 sewage Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 230000003179 granulation Effects 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 5
- 238000001879 gelation Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 4
- 229940048086 sodium pyrophosphate Drugs 0.000 description 4
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、下水処理等に用いる硝
化菌、脱窒菌等の固定化担体の製造方法に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an immobilization carrier for nitrifying bacteria, denitrifying bacteria and the like used for treating sewage.
【０００２】[0002]
【従来の技術】硝化菌、脱窒菌等の固定化担体の製造方
法としては、ポリビニルアルコールを固定化材料として
固定化担体を製造する方法が知られており、図６に示す
冷凍法と図７に示すホウ酸法が一般的である。これらの
方法は、ポリビニルアルコールを水に加熱溶解した後に
固定化する菌体を大量に含む種汚泥と混合し、これを冷
凍したり飽和ホウ酸溶液中に滴下したりしてゲル化・造
粒する方法であった。2. Description of the Related Art As a method for producing an immobilizing carrier for nitrifying bacteria, denitrifying bacteria and the like, a method for producing an immobilizing carrier using polyvinyl alcohol as an immobilizing material is known, and the freezing method shown in FIG. 6 and FIG. The boric acid method shown in is generally used. In these methods, polyvinyl alcohol is heated and dissolved in water, and then mixed with seed sludge containing a large amount of cells to be immobilized, which is then frozen or added dropwise to a saturated boric acid solution for gelation / granulation. Was the way to do it.
【０００３】ところがこれらの方法は原料であるポリビ
ニルアルコールに種汚泥を加えた後にゲル化・造粒のた
めに−20℃以下に冷凍したり、殺菌剤であるホウ酸を加
えたりするため、添加した種汚泥の活性が本来の1/5 〜
1/10にまで低下し、本来の活性を取り戻すまでには下水
等の処理を開始してから10〜15日、場合によっては１ケ
月もかかる欠点があった。またこれらの方法では固定化
担体製造時に種汚泥を添加するので、製造工場で常に種
汚泥を培養し、活性が高い状態で保持する必要があり、
製造コストも多大なものであった。However, in these methods, seed sludge is added to polyvinyl alcohol as a raw material and then frozen at -20 ° C. or lower for gelation and granulation, or boric acid as a bactericide is added. 1/5 of the original activity of seed sludge
It was reduced to 1/10, and it took 10 to 15 days from the start of treatment of sewage or the like until it regains its original activity. Further, in these methods, since the seed sludge is added during the production of the immobilized carrier, it is necessary to constantly cultivate the seed sludge in the manufacturing plant and maintain it in a high activity state.
The manufacturing cost was also great.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記の問題点
を解決するためになされたものであり、その第１の目的
は種汚泥の活性をそのまま維持し、下水等の処理開始時
から本来の機能を発揮することができる固定化担体の製
造方法を提供することである。また第２の目的は、種汚
泥の固定化を現場において行うことができ、工場におけ
る種汚泥培養の操作をなくして製造コストを引き下げる
ことができる固定化担体の製造方法を提供することであ
る。また第３の目的は、種汚泥固定化前のゲル化・造粒
物質の体積を小さくして輸送コストを低減できる固定化
担体の製造方法を提供することである。更に第４の目的
は、種汚泥の活性維持に規制されることなく十分にゲル
化・造粒操作を行うことができ、これによって強度の高
い固定化担体を得ることができる固定化担体の製造方法
を提供することである。The present invention has been made in order to solve the above problems, and the first purpose thereof is to maintain the activity of seed sludge as it is and to start from the start of treatment of sewage or the like. It is an object of the present invention to provide a method for producing an immobilization carrier capable of exhibiting the function of. A second object of the present invention is to provide a method for producing an immobilization carrier, which enables immobilization of seed sludge on site and reduces the production cost by eliminating the operation of seed sludge culture in a factory. A third object is to provide a method for producing an immobilization carrier which can reduce the volume of gelling / granulating substance before immobilization of seed sludge to reduce transportation cost. Further, a fourth object is to manufacture an immobilization carrier capable of sufficiently performing gelation / granulation operation without being restricted by the activity maintenance of seed sludge and thereby obtaining an immobilization carrier having high strength. Is to provide a method.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めになされた固定化担体の製造方法に係る第１の発明
は、ポリビニルアルコールを水に加熱溶解した後、冷凍
法によって、内部を水分で満たされたゲル化・造粒物質
に形成し、次いでこのゲル化・造粒物質を水分が20〜50
％となるまで乾燥して前記内部の水分を排除したうえ、
種汚泥に浸漬して前記水分を排除した内部に種汚泥を吸
収させることを特徴とするものである。また第２の発明
は、ポリビニルアルコールを水に加熱溶解した後、ホウ
酸法によって、内部を水分で満たされたゲル化・造粒物
質に形成し、次いでこのゲル化・造粒物質を水分が20〜
50％となるまで乾燥して前記内部の水分を排除したう
え、種汚泥に浸漬して前記水分を排除した内部に種汚泥
を吸収させることを特徴とするものである。The first invention relating to the method for producing an immobilizing carrier made to solve the above-mentioned problems is to dissolve polyvinyl alcohol in water by heating and then to dissolve the water content in the interior by a freezing method. Gelled and granulated material filled with
Formed in, then the gel-granulation material moisture 20-50
% Until it is dried to remove the water content inside ,
Soak the seed sludge inside the seed sludge to remove the water.
And it is characterized in Rukoto to yield. A second aspect of the invention is a gelled / granulated product in which polyvinyl alcohol is dissolved in water by heating and then the inside is filled with water by the boric acid method .
Forming quality, then water 20 The gelled-granulation substance
After drying to 50% to remove the water inside, it is immersed in seed sludge to remove the water inside the seed sludge.
To absorb and is characterized in Rukoto.
【０００６】以下にこれらの発明をより詳細に説明す
る。図１は第１の発明の工程を説明するフローシートで
あり、まずポリビニルアルコールを溶解用の容器にと
り、その濃度がほぼ10〜15重量％になるように水を加え
る。ポリビニルアルコールの濃度が10％未満ではゲル強
度が低く、15％を越えると密になり過ぎて後工程におい
て種汚泥がゲル内に浸入しにくくなる。These inventions will be described in more detail below. FIG. 1 is a flow sheet for explaining the process of the first invention. First, polyvinyl alcohol is placed in a container for dissolution, and water is added so that its concentration becomes approximately 10 to 15% by weight. If the concentration of polyvinyl alcohol is less than 10%, the gel strength will be low, and if it exceeds 15%, the gel strength will be too high and seed sludge will not easily penetrate into the gel in the subsequent step.
【０００７】次に、この懸濁液を120 ℃程度に加熱して
溶解させる。これを冷凍容器に厚さが３〜10mmになるよ
うに移し、−30℃〜−20℃程度で数時間〜24時間程度冷
凍する。そして冷凍が終わったら−５℃〜室温で数時間
〜12時間溶解する。この冷凍→溶解の操作を３〜５回繰
り返して、この懸濁液を内部が水分で満たされたゲル化
物質に形成する。従来法では、この冷凍→溶解の操作は
種汚泥の活性低下を招くために１〜２回しか行えなかっ
たが、本発明では種汚泥のない状態で行うために何回も
繰り返すことができ、図３に示すように強度を向上させ
ることができる。Next, this suspension is heated to about 120 ° C. to dissolve it. This is transferred to a freezing container so as to have a thickness of 3 to 10 mm and frozen at about -30 ° C to -20 ° C for several hours to 24 hours. After freezing, melt at -5 ° C to room temperature for several hours to 12 hours. The operation of this refrigeration → dissolved by 3-5 times Repetitive <br/> Rikae, gelling the suspension inside is filled with water
Form into a substance. In the conventional method, this operation of freezing → melting can be performed only once or twice because it leads to a decrease in the activity of the seed sludge, but in the present invention, it can be repeated many times because it is performed in the absence of seed sludge, As shown in FIG. 3, the strength can be improved.
【０００８】このようにして得られたゲル化物質を冷凍
容器から取り出し、切断機により切断して３〜10mmに造
粒する。これを十分水洗いした後、常温で風乾するか真
空乾燥を行って水分を20〜50％程度に調整する。ここで
乾燥を行うのは、得られるゲル化・造粒物質の体積を1/
2 〜1/3 に減少させて輸送コストを低減することと、後
の種汚泥浸漬工程において種汚泥をゲル化・造粒物質の
表面部分に止まらず内部の方まで十分に吸収させるため
である。The gelled substance thus obtained is taken out from the freezing container, cut by a cutting machine and granulated to 3 to 10 mm. After thoroughly washing this with water, air-dry at room temperature or vacuum-dry to adjust the water content to about 20-50%. Here, drying is performed by reducing the volume of the obtained gelled / granulated substance to 1 /
2-1 / 3 to decrease and to reduce the transport costs, after the gelling, the granulation substance seed sludge in seed sludge immersion step of
This is because it is not limited to the surface part, but is sufficiently absorbed inside .
【０００９】乾燥されたゲル化・造粒物質は固定化する
菌体を大量に含む種汚泥に浸漬し、菌の固定化を行う
が、前記のような乾燥後のゲル化・造粒物質の水分と、
それらが種汚泥に浸漬されて出来上がったときの固定化
担体の活性を表す酸素利用速度との関係について図４の
グラフに例示する。本発明では、前記ゲル化・造粒物質
の内部にまで大量の種汚泥を吸収させることができるの
であるが、水分が20％未満の場合には、乾燥時にゲル化
・造粒物質の表面の細孔が小さくなったまま硬化するた
めに種汚泥の吸収が少なく、図示のように酸素利用速度
が小さくなる。逆に50％を越える水分の場合には、水分
がまだゲル化・造粒物質の内部に多く存在するために種
汚泥の吸収が少なく、やはり酸素利用速度が小さくな
る。The dried gelled / granulated substance is fixed
Immobilize bacteria by immersing them in seed sludge containing a large amount of bacteria
However, with the water content of the gelled / granulated substance after drying as described above ,
The graph of FIG. 4 illustrates the relationship with the oxygen utilization rate, which represents the activity of the immobilized carrier when they are completed by being immersed in seed sludge . In the present invention, the gelled / granulated substance
Can absorb a large amount of seed sludge even inside the
However, when the water content is less than 20%, the gelling / granulating substance hardens with the pores on the surface of the granulating substance becoming small during drying, so the seed sludge absorption is small, and the oxygen utilization rate as shown in the figure. Becomes smaller. On the other hand, when the water content exceeds 50%, the water content is still large inside the gelled / granulated material, so that the absorption of seed sludge is small and the oxygen utilization rate is also low.
【００１０】この固定化操作は固定化担体を製造する工
場内で行ってもよいし、下水等の処理設備のある現場で
行ってもよい。下水処理の現場には種汚泥があることが
多いので、現場でこの操作を行えば、特別の種汚泥培養
の必要がないので製造コストの削減ができる。また工場
内でこの操作を行う場合とは異なり、出来上がった固定
化担体を輸送する間に活性が低下するおそれもなく、更
に輸送コストも低減できるので、そのメリットは大きい
ものである。This immobilization operation may be carried out in the factory for producing the immobilization carrier, or may be carried out at a site having a treatment facility for sewage or the like. Since seed sludge is often present at the site of sewage treatment, if this operation is performed at the site, there is no need for special seed sludge culture, and the manufacturing cost can be reduced. Further, unlike the case where this operation is carried out in the factory, there is no fear that the activity will decrease during transportation of the finished immobilization carrier and the transportation cost can be reduced, which is a great advantage.
【００１１】乾燥後のゲル化・造粒物質の種汚泥浸漬に
あたっては、予め種汚泥に種汚泥中の濃度が0.1W/V％以
上になるようにピロリン酸ナトリウムを添加し、攪拌し
て汚泥を分散させておくことが好ましい。図５は種汚泥
に添加したピロリン酸ナトリウム濃度と、出来上がった
固定化担体の酸素利用速度を示したグラフである。ピロ
リン酸ナトリウム濃度が0.1W/V％未満であると種汚泥が
凝集して大きくなっているため、菌体がゲルの細孔に入
り込みにくくなり、図示の通り酸素利用速度は低下す
る。When the gelled / granulated substance after drying is immersed in the seed sludge, sodium pyrophosphate is added to the seed sludge in advance so that the concentration in the seed sludge is 0.1 W / V% or more, and the sludge is stirred. Is preferably dispersed. FIG. 5 is a graph showing the concentration of sodium pyrophosphate added to the seed sludge and the oxygen utilization rate of the finished immobilization carrier. If the sodium pyrophosphate concentration is less than 0.1 W / V%, the seed sludge agglomerates and becomes large, and it becomes difficult for bacteria to enter the gel pores, and the oxygen utilization rate decreases as shown in the figure.
【００１２】図２は第２の発明の工程を説明するフロー
シートであり、上述した冷凍法による工程とほとんど同
じである。しかしゲル化、造粒を飽和ホウ酸溶液に滴下
することによって行う。そして飽和ホウ酸溶液中に１〜
３日間浸漬して熟成させる。従来のホウ酸法では種汚泥
の活性低下を招くために１日程度の浸漬しか行えなかっ
たが、本発明ではこれを３日程度に延長することによっ
て引張強度を従来よりも50％程度も向上させることが可
能となる。その他の工程は冷凍法と同様であるから、説
明を繰り返すことを省略する。FIG. 2 is a flow sheet for explaining the process of the second invention, which is almost the same as the process by the above-mentioned freezing method. However, gelation and granulation are carried out by dropping the saturated boric acid solution. And 1 to saturated boric acid solution
Soak for 3 days for aging. In the conventional boric acid method, the activity of seed sludge was lowered, so that the immersion was only possible for about one day. However, in the present invention, by extending this for about three days, the tensile strength is improved by about 50% as compared with the conventional method. It becomes possible. The other steps are the same as in the freezing method, and thus the description thereof will not be repeated.
【００１３】[0013]
【実施例】上記した第１の発明の冷凍法により製造され
た固定化担体と、従来の冷凍法により製造された固定化
担体とを下水処理用の硝化槽に充填し、処理量１m3/Hr
の規模でNH4-N の除去を行わせた結果を表１に示す。本
発明の方法で製造された固定化担体を使用した系では処
理開始５日後には処理が完全に立ち上がっているのに対
して、従来法により製造された固定化担体を使用した系
では、処理開始15日を経過してはじめて立ち上がってお
り、本発明の優位性が確認できる。EXAMPLE An immobilization carrier produced by the above-mentioned freezing method of the first invention and an immobilization carrier produced by the conventional freezing method were filled in a nitrification tank for sewage treatment, and the treatment amount was 1 m 3 / Hr
Table 1 shows the results of the removal of NH 4 -N on the scale of. In the system using the immobilizing carrier prepared by the method of the present invention, the treatment is completely started after 5 days from the start of the treatment, whereas in the system using the immobilizing carrier produced by the conventional method, It is only started after 15 days have passed, and the superiority of the present invention can be confirmed.
【００１４】[0014]
【表１】 [Table 1]
【００１５】[0015]
【発明の効果】以上に説明したように、本発明の固定化
担体の製造方法によれば、種汚泥を担体の内部にまで大
量に吸収させることができるうえ、その活性を担体のゲ
ル化操作によって損なうことなくそのまま維持し、下水
等の処理開始時から本来の機能を発揮することができる
固定化担体を得ることができ、また工場における種汚泥
培養の操作をなくして製造コストを引き下げることがで
きる。更に本発明の固定化担体の製造方法によれば、種
汚泥固定化前のゲル化・造粒物質を適度に乾燥すること
で体積を小さくして輸送コストを低減できるうえ、従来
のように種汚泥の活性維持に規制されることなく、十分
にゲル化・造粒操作を行うことができ、強度の高い固定
化担体を得ることができる。また本発明の方法により製
造された固定化担体は、従来包括固定化担体を用いてい
たいずれの分野においても応用が可能なものであり、本
発明は業界に寄与するところは極めて大きいものであ
る。As described above, according to the method for producing an immobilizing carrier of the present invention, seed sludge can be expanded to the inside of the carrier.
After that can be absorbed in an amount, activity of that carrier gain
It is possible to obtain an immobilization carrier that can maintain its original state without being damaged by the liquefaction operation and can exhibit its original function from the start of the treatment of sewage, etc. Can be lowered. Further, according to the method for producing an immobilized carrier of the present invention, the gelled / granulated substance before the seed sludge is immobilized is appropriately dried.
In terms of it can reduce transportation costs by reducing the volume, conventional
As described above, gelation / granulation operations can be sufficiently performed without being restricted by the activity maintenance of seed sludge, and an immobilized carrier having high strength can be obtained. The immobilization pellets produced by the process of the present invention are those applications that are possible in any which has been using the conventional entrapping immobilization pellets art, the present
The invention contributes greatly to the industry.
【図１】第１の発明による固定化担体の製造法を示すフ
ローシートである。FIG. 1 is a flow sheet showing a method for producing an immobilization carrier according to the first invention.
【図２】第２の発明による固定化担体の製造法を示すフ
ローシートである。FIG. 2 is a flow sheet showing a method for producing an immobilization carrier according to the second invention.
【図３】冷凍＋溶解の繰り返し回数と、出来上がった固
定化担体の引張強度との関係を示すグラフである。FIG. 3 is a graph showing the relationship between the number of repetitions of freezing and thawing and the tensile strength of the finished immobilized carrier.
【図４】乾燥後のゲル化・造粒物質の水分と、出来上が
った固定化担体の酸素利用速度との関係を示すグラフで
ある。FIG. 4 is a graph showing the relationship between the water content of the gelled / granulated substance after drying and the oxygen utilization rate of the finished immobilized carrier.
【図５】種汚泥に添加したピロリン酸ナトリウムの濃度
と、出来上がった固定化担体の酸素利用速度との関係を
示すグラフである。FIG. 5 is a graph showing the relationship between the concentration of sodium pyrophosphate added to seed sludge and the oxygen utilization rate of the finished immobilization carrier.
【図６】従来の冷凍法による固定化担体の製造法を示す
フローシートである。FIG. 6 is a flow sheet showing a conventional method for producing an immobilized carrier by a freezing method.
【図７】従来のホウ酸法による固定化担体の製造法を示
すフローシートである。FIG. 7 is a flow sheet showing a conventional method for producing an immobilized carrier by the boric acid method.
Claims (2)
た後、冷凍法によって、内部を水分で満たされたゲル化
・造粒物質に形成し、次いでこのゲル化・造粒物質を水
分が20〜50％となるまで乾燥して前記内部の水分を排除
したうえ、種汚泥に浸漬して前記水分を排除した内部に
種汚泥を吸収させることを特徴とする固定化担体の製造
方法。1. A method in which polyvinyl alcohol is dissolved in water by heating and then a freezing method is used to form a gelled / granulated substance whose inside is filled with water. % To dry to eliminate water inside
In addition , soak it in seed sludge to remove the water inside
Method for producing immobilized carrier, wherein Rukoto to absorb seed sludge.
た後、ホウ酸法によって、内部を水分で満たされたゲル
化・造粒物質に形成し、次いでこのゲル化・造粒物質を
水分が20〜50％となるまで乾燥して前記内部の水分を排
除したうえ、種汚泥に浸漬して前記水分を排除した内部
に種汚泥を吸収させることを特徴とする固定化担体の製
造方法。2. A polyvinyl alcohol is heated and dissolved in water, and then a boric acid method is used to form a gelled / granulated substance whose inside is filled with water. Dry to 50% to drain the water inside.
After removing it, it is immersed in seed sludge to remove the water content.
Method for producing immobilized carrier, wherein Rukoto imbibed seed sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4249707A JP2548871B2 (en) | 1992-09-18 | 1992-09-18 | Method for producing immobilized carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4249707A JP2548871B2 (en) | 1992-09-18 | 1992-09-18 | Method for producing immobilized carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0699186A JPH0699186A (en) | 1994-04-12 |
| JP2548871B2 true JP2548871B2 (en) | 1996-10-30 |
Family
ID=17197008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4249707A Expired - Fee Related JP2548871B2 (en) | 1992-09-18 | 1992-09-18 | Method for producing immobilized carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548871B2 (en) |
Cited By (1)
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|---|---|---|---|---|
| CN103951031A (en) * | 2014-04-04 | 2014-07-30 | 北京工业大学 | Preparation and application of denitrifying bacteria immobilized fixed-type bioactive fillers based on reticulate carriers |
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|---|---|---|---|---|
| CN103193315B (en) * | 2013-04-12 | 2014-05-07 | 北京工业大学 | Method for preparing bioactive filler through immobilization of anaerobic ammonia oxidizing bacterium |
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| CN103951071B (en) * | 2014-04-04 | 2016-06-01 | 北京工业大学 | A kind of immobilization fixed type biological active filler preparations and applicatio based on mesh carrier |
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| CN103951032B (en) * | 2014-04-04 | 2016-01-13 | 北京工业大学 | A kind of sulfate reduction bacteria immobilization star biological active filling material preparations and applicatio based on mesh carrier |
| CN105396565A (en) * | 2015-12-25 | 2016-03-16 | 常州大学 | Preparation method of epoxy resin embedded nitrobacterium high-concentration ammonia nitrogen wastewater adsorbent |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55111895A (en) * | 1979-02-20 | 1980-08-28 | Achilles Corp | Filter material for waste liquid treating apparatus |
| JPH0244514B2 (en) * | 1981-09-14 | 1990-10-04 | Nippon Oil Co Ltd | BISEIBUTSUSEIKINTAINOKOTEIKA * ZOSHOKUHO |
| JPS5956446A (en) * | 1982-09-24 | 1984-03-31 | Nippon Oil Co Ltd | Method for lowering flexibility of frozen polyvinyl alcohol gel |
| JPS63252593A (en) * | 1987-04-08 | 1988-10-19 | Kyoritsu Yuki Co Ltd | Aerobic biological treatment method |
| JPH0773702B2 (en) * | 1988-04-30 | 1995-08-09 | 日本石油精製株式会社 | PVA high water content gel, microbial embedding high water content gel, and purification method of wastewater containing organic substances |
| JPH0244513A (en) * | 1988-08-05 | 1990-02-14 | Canon Inc | tracking control device |
| JPH04104900A (en) * | 1990-08-22 | 1992-04-07 | Mitsubishi Heavy Ind Ltd | Functional agent for improving organic sludge decomposition sediment |
-
1992
- 1992-09-18 JP JP4249707A patent/JP2548871B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103951031A (en) * | 2014-04-04 | 2014-07-30 | 北京工业大学 | Preparation and application of denitrifying bacteria immobilized fixed-type bioactive fillers based on reticulate carriers |
| CN103951031B (en) * | 2014-04-04 | 2016-06-01 | 北京工业大学 | A kind of denitrifying bacterium immobilization fixed type biological active filler preparations and applicatio based on mesh carrier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0699186A (en) | 1994-04-12 |
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