JPH1072213A - Production of granular zeolite and nitrogen-containing soil conditioner from incineration ash of sewage sludge - Google Patents
Production of granular zeolite and nitrogen-containing soil conditioner from incineration ash of sewage sludgeInfo
- Publication number
- JPH1072213A JPH1072213A JP9123919A JP12391997A JPH1072213A JP H1072213 A JPH1072213 A JP H1072213A JP 9123919 A JP9123919 A JP 9123919A JP 12391997 A JP12391997 A JP 12391997A JP H1072213 A JPH1072213 A JP H1072213A
- Authority
- JP
- Japan
- Prior art keywords
- sewage sludge
- zeolite
- incineration ash
- water
- sludge incineration
- 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.)
- Withdrawn
Links
- 239000010457 zeolite Substances 0.000 title claims abstract description 56
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 54
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000010801 sewage sludge Substances 0.000 title claims abstract description 38
- 239000003516 soil conditioner Substances 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 239000010865 sewage Substances 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 239000008187 granular material Substances 0.000 abstract description 3
- 238000005341 cation exchange Methods 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 238000010304 firing Methods 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000003337 fertilizer Substances 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- -1 ammonium ions Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Water Treatment By Sorption (AREA)
- Glanulating (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、下水汚泥焼却灰か
らの粒状ゼオライト及び窒素含有土壌改良材の製造方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing granular zeolite and nitrogen-containing soil conditioner from sewage sludge incineration ash.
【０００２】[0002]
【従来の技術】従来より、下水汚泥焼却灰はそのほとん
どが埋立て処理され、その有効利用はほとんどされてい
なかった。下水汚泥焼却灰の組成はＳｉＯ2 を主成分と
し、その他にＡｌ2 Ｏ3 等を含有している。2. Description of the Related Art Conventionally, most of sewage sludge incineration ash has been landfilled, and its effective use has hardly been achieved. The composition of the sewage sludge incineration ash contains SiO 2 as a main component, and also contains Al 2 O 3 and the like.
【０００３】このような組成をもつ下水汚泥焼却灰の有
効利用のため、本発明者らは、下水汚泥焼却灰に対し苛
性ソーダ溶液との水熱処理を行うことによってカチオン
交換容量を有するゼオライト系鉱物を製造する方法を提
供した（特願平４−３３９９４２号、特願平５−２９７
７０６号）。[0003] In order to effectively use sewage sludge incineration ash having such a composition, the present inventors conducted hydrothermal treatment of sewage sludge incineration ash with a caustic soda solution to obtain a zeolite-based mineral having a cation exchange capacity. Production methods were provided (Japanese Patent Application Nos. 4-339942 and 5-297).
No. 706).
【０００４】すなわち、そのゼオライト化方法では、下
水汚泥焼却灰と２Ｎ〜３Ｎ濃度の苛性ソーダ溶液を下水
汚泥焼却灰に対する苛性ソーダ溶液の量比を１〜３：１
２〜７、反応温度を９０℃〜１５０℃、反応時間４ｈ以
上の水熱反応を行った後、ろ過、洗浄してゼオライト化
した灰を合成する。In other words, in the zeolite conversion method, the sewage sludge incineration ash and the 2N to 3N concentration of caustic soda solution are mixed at a volume ratio of the caustic soda solution to the sewage sludge incineration ash of 1 to 3: 1.
After performing a hydrothermal reaction at 2 to 7 at a reaction temperature of 90 ° C. to 150 ° C. for a reaction time of 4 hours or more, filtration and washing are performed to synthesize zeolite ash.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、下水汚泥焼
却灰から得たゼオライトから水処理用等に使用される粒
状ゼオライトの製造方法を提供しようとするものであ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing granular zeolite used for water treatment or the like from zeolite obtained from sewage sludge incineration ash.
【０００６】また、本発明は、上記本発明によって得ら
れた粒状ゼオライトの有効利用方法を提供することもそ
の課題の一つとしている。Another object of the present invention is to provide a method for effectively using the granular zeolite obtained by the present invention.
【０００７】[0007]
【課題を解決するための手段】本発明の下水汚泥焼却灰
からの粒状ゼオライトの製造方法は、下水汚泥焼却灰か
ら前記したように合成したゼオライトに水を加えて混練
した後押出造粒機で押出して一定粒径に成形した後に乾
燥し、さらに６５０℃〜７５０℃の温度で焼成すること
を特徴とする。The method of the present invention for producing granular zeolite from sewage sludge incineration ash is characterized by adding water to the zeolite synthesized as described above from sewage sludge incineration ash, kneading the mixture, and then using an extrusion granulator. It is characterized in that it is extruded, formed into a certain particle size, dried, and further fired at a temperature of 650 ° C to 750 ° C.
【０００８】下水汚泥焼却灰の組成は、ＳｉＯ2 を主成
分とし、その他にＡｌ2 Ｏ3 、Ｎａ 2 Ｏ、Ｆｅ2 Ｏ3 、
ＣａＯ等を含有しているが、下水汚泥のゼオライト化さ
れた灰は粉状であるため、水処理用等の吸着材としての
利用が困難であり、その粒状化が求められている。The composition of sewage sludge incineration ash is SiOTwoThe main
Minutes, and AlTwoOThree, Na TwoO, FeTwoOThree,
Although it contains CaO etc., sewage sludge is converted to zeolite.
As the ash is in powder form, it is used as an adsorbent for water treatment, etc.
It is difficult to use and its granulation is required.
【０００９】下水汚泥焼却灰から合成したゼオライトの
粒状化にあたっては、水中で粒状の形が崩壊しないで、
かつ、粒状ゼオライトがカチオン交換容量を保持するこ
とが求められている。In the granulation of zeolite synthesized from sewage sludge incineration ash, the granular shape does not collapse in water.
In addition, it is required that the granular zeolite has a cation exchange capacity.
【００１０】本発明者は、鋭意検討の結果、本発明を考
えるに至った。すなわち、下水汚泥焼却灰から合成した
粉状のゼオライトに対して、例えば２５〜３５ｗｔ％の
水を加えて混練した後、押出造粒機（例えば圧力５〜２
０ｋｇ／ｃｍ2 ）で押し出して、例えば３ｍｍφ〜５ｍ
ｍφの一定の粒径に成形した後乾燥し、次に、６５０℃
〜７５０℃でこれを焼成するようにした。As a result of intensive studies, the inventor has come to consider the present invention. That is, for example, 25-35 wt% of water is added to and kneaded with powdery zeolite synthesized from sewage sludge incineration ash, and then extruded with a granulator (for example, a pressure of 5 to 2%).
0kg / cm 2 ), for example, 3mmφ ~ 5m
After forming into a certain particle size of mφ and drying, then 650 ° C
This was to be fired at ７750 ° C.
【００１１】前記造粒に当っては、バインダー（ポリビ
ニルアルコール等）の添加を試みたが、水中で形状を保
持し、かつ、カチオン交換能を０．５ｅｑ／ｋｇ以上有
するものを作ることが困難であった。In the above granulation, an attempt was made to add a binder (polyvinyl alcohol, etc.), but it was difficult to produce a material having a shape in water and having a cation exchange capacity of 0.5 eq / kg or more. Met.
【００１２】前記のように、下水汚泥焼却灰から合成し
たゼオライトに水を加えて混練して押出機で押出して一
定粒径に造粒成形したものを焼成する温度条件として
は、６５０℃より低い焼成温度ではカチオン交換能は有
するが水中での崩壊現象が発生する。As described above, the temperature condition for firing the zeolite synthesized from sewage sludge incineration ash, adding water, kneading, extruding with an extruder and granulating to a constant particle size, is lower than 650 ° C. At the calcination temperature, it has cation exchange ability, but collapses in water.
【００１３】一方、７５０℃以上の焼成温度ではカチオ
ン交換能が０．１ｅｑ／ｋｇに低下してゼオライトの機
能が消失する。本発明における６５０℃〜７５０℃の焼
成温度では、カチオン交換能が０．５ｅｑ／ｋｇ以上あ
って、かつ、水中での崩壊現象がなくて形状を維持する
ことができる。On the other hand, at a calcination temperature of 750 ° C. or higher, the cation exchange capacity is reduced to 0.1 eq / kg, and the function of zeolite is lost. At the firing temperature of 650 ° C. to 750 ° C. in the present invention, the cation exchange capacity is 0.5 eq / kg or more, and the shape can be maintained without collapse phenomenon in water.
【００１４】以上説明したように、本発明によれば、水
中で崩壊することがなく、しかも、カチオン交換能を有
する粒状ゼオライトを製造することができる。本発明の
評価試験を以下に説明する。As described above, according to the present invention, a granular zeolite which does not collapse in water and has a cation exchange ability can be produced. The evaluation test of the present invention will be described below.
【００１５】（１）水への浸漬試験 試験方法は、焼成造粒物を水に浸漬した後、手の平でも
み洗いを行って造粒物の崩壊状態で評価した。試験結果
を示す表１に示されるように、６５０℃以上の焼成物で
は、粒形の崩壊がなかった。(1) Immersion test in water The test method was such that the fired granules were immersed in water, washed with a palm, and evaluated in the collapsed state of the granules. As shown in Table 1 showing the test results, in the fired product at 650 ° C. or higher, there was no collapse of the particle shape.
【００１６】[0016]
【表１】 [Table 1]
【００１７】なお表１中の焼成は、表１中に記載された
焼成温度より１００℃低い温度で３０分間焼成した後目
標とする焼成温度で１０分間焼成を行なった。The firing in Table 1 was performed at a temperature 100 ° C. lower than the firing temperature described in Table 1 for 30 minutes, and then at the target firing temperature for 10 minutes.
【００１８】（２）焼成温度とカチオン交換容量 カチオン交換容量は、Ｓｈｏｌｅｎｂｅｒｇ法により測
定された。図３に示すように、焼成温度が７５０℃まで
の本発明に係る焼成物では、カチオン交換容量は約１．
０ｅｑ／ｋｇあるが、８００℃以上の焼成物ではカチオ
ン交換容量は０．１ｅｑ／ｋｇ以下となった。(2) Firing temperature and cation exchange capacity The cation exchange capacity was measured by the Sholenberg method. As shown in FIG. 3, in the calcined product according to the present invention in which the calcining temperature is up to 750 ° C., the cation exchange capacity is about 1.1.
Although it was 0 eq / kg, the cation exchange capacity of the calcined product at 800 ° C. or higher was 0.1 eq / kg or less.
【００１９】次に、本発明は、以上のようにして下水汚
泥焼却灰から得た粒状ゼオライトの有効利用方法を提供
するという本発明の課題を解決するため次の方法を提供
する。Next, the present invention provides the following method for solving the problem of the present invention, which provides a method for effectively utilizing granular zeolite obtained from sewage sludge incineration ash as described above.
【００２０】すなわち、本発明は、ＭＦ膜等のろ過材
（砂ろ過、ＵＦ膜、ＲＯ膜でもよい）で懸濁物除去処理
を行った下水２次処理水を、前記したように本発明によ
って下水汚泥焼却灰から得られた粒状ゼオライトを充填
した焼却灰吸着塔に通水する等によって、下水２次処理
水中のアンモニア性窒素をその粒状ゼオライトに吸着さ
せ、アンモニア性窒素を吸着した該粒状ゼオライトを土
壌改良材に使用することを特徴とする方法を提供する。That is, according to the present invention, the secondary sewage treated water subjected to the suspension removal treatment with a filter material such as an MF membrane (a sand filtration, a UF membrane, or an RO membrane) may be used according to the present invention as described above. By passing water through an incineration ash adsorption tower filled with granular zeolite obtained from sewage sludge incineration ash, the ammoniacal nitrogen in the sewage secondary treatment water is adsorbed on the granular zeolite, and the ammoniacal nitrogen adsorbed on the granular zeolite Is used as a soil conditioner.
【００２１】本発明による下水汚泥焼却灰から得た粒状
ゼオライトの上記有効利用方法によれば、該粒状ゼオラ
イトを塔に充填する等して、そこに予め懸濁粒子（Ｓ
Ｓ）除去を行ったアンモニア含有の下水２次処理水を通
水して粒状ゼオライトにアンモニア性窒素を吸着させて
窒素含有土壌改良材を製造することができる。According to the above-mentioned method for effectively utilizing the granular zeolite obtained from the sewage sludge incineration ash according to the present invention, the granular zeolite is filled in a tower or the like, and the suspended particles (S
S) The removed ammonia-containing sewage secondary treatment water is passed through to adsorb ammonia nitrogen to the granular zeolite to produce a nitrogen-containing soil conditioner.
【００２２】こうして、本発明によれば下水汚泥焼却灰
から製造した粒状ゼオライトに、下水２次処理水を通水
して肥料成分であるアンモニア性窒素を吸着させること
により、下水の浄化を行うと共にそのゼオライトを肥料
成分を含んだ土壌改良材として活用することができる。As described above, according to the present invention, the granular zeolites produced from sewage sludge incineration ash are passed through the secondary sewage water to adsorb ammonia nitrogen as a fertilizer component, thereby purifying sewage. The zeolite can be used as a soil conditioner containing a fertilizer component.
【００２３】[0023]
（実施の第１形態）本発明の実施の第１形態を、図１及
び図２によって説明する。図２に示すように、下水汚泥
焼却灰に苛性ソーダ溶液を添加して、９５℃〜２１０℃
の温度で４〜１８時間水熱反応を発生させ、その上でろ
過、洗浄を行った後に１００℃の温度で乾燥して粒状の
ゼオライトを合成する。(First Embodiment) A first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 2, a caustic soda solution is added to sewage sludge incineration ash,
A hydrothermal reaction is generated at a temperature of 4 to 18 hours, followed by filtration and washing, followed by drying at a temperature of 100 ° C. to synthesize granular zeolite.
【００２４】この下水汚泥灰から合成したゼオライトに
対して、図１に示すように、水を３０ｗｔ／％加えてニ
ーダ（バッチ湿式捏和機）で混練した後押出式造粒機で
３ｍｍφ×５ｍｍＬに成形する。次に、これを乾燥して
水分を飛ばした後、電気炉で、６５０℃〜７５０℃の温
度で１０分間焼成を行って粒状ゼオライトを製造する。
なお、この場合の造粒条件は、表２に示す通りである。As shown in FIG. 1, 30 wt /% water is added to the zeolite synthesized from the sewage sludge ash, the mixture is kneaded in a kneader (batch wet kneader), and then 3 mmφ × 5 mmL in an extrusion granulator. Mold into Next, this is dried to remove moisture, and then calcined in an electric furnace at a temperature of 650 ° C. to 750 ° C. for 10 minutes to produce granular zeolite.
The granulation conditions in this case are as shown in Table 2.
【００２５】[0025]
【表２】 [Table 2]
【００２６】前記「課題を解決するための手段」の欄で
詳述したように、本実施の第１形態によれば、下水汚泥
焼却灰より、水中で形状を保持し、かつ、カチオン交換
能を有する粒状のゼオライトを製造することができる。As described in detail in the section of "Means for Solving the Problems", according to the first embodiment, sewage sludge incineration ash retains its shape in water and has a cation exchange capacity. Can be produced.
【００２７】（実施の第２形態）次に、本発明により下
水汚泥焼却灰から得られた粒状のゼオライトを用いて、
下水２次処理水の浄化を行うと共に窒素含有土壌改良材
を製造する方法の実施形態について説明する。(Second Embodiment) Next, using granular zeolite obtained from sewage sludge incineration ash according to the present invention,
An embodiment of a method for purifying sewage secondary treatment water and producing a nitrogen-containing soil improving material will be described.
【００２８】この実施の第２形態で用いる、下水汚泥焼
却灰から作った粒状のゼオライトの物性、充填塔の仕様
とゼオライト試験のフローシートをそれぞれ表３と図４
に示す。Table 3 and FIG. 4 show the physical properties of the granular zeolite made from sewage sludge incineration ash, the specification of the packed tower, and the flow sheet of the zeolite test used in the second embodiment, respectively.
Shown in
【００２９】[0029]
【表３】 [Table 3]
【００３０】図４において、１は下水からＭＦ膜で懸濁
粒子（ＳＳ）を除去するためのＭＦ処理槽、２はヘッダ
ー管、３は流量計を示している。４は前記した下水汚泥
焼却灰から作った粒状ゼオライトを充填したゼオライト
充填塔である。In FIG. 4, reference numeral 1 denotes an MF treatment tank for removing suspended particles (SS) from sewage using an MF membrane, 2 denotes a header tube, and 3 denotes a flow meter. Reference numeral 4 denotes a zeolite packed tower filled with granular zeolite made from the above-described sewage sludge incineration ash.
【００３１】図４のフローにおいて、ＭＦ処理槽１のＭ
Ｆ膜でＳＳ除去した下水２次処理水をゼオライト充填塔
４に通水した試験結果を表４、表５及び図５に示す。In the flow shown in FIG.
Table 4 and Table 5 and FIG. 5 show the test results in which the sewage secondary treated water from which SS was removed by the F membrane was passed through the zeolite packed tower 4.
【００３２】[0032]
【表４】 [Table 4]
【００３３】[0033]
【表５】 [Table 5]
【００３４】これらの試験結果に見られるように、下水
汚泥焼却灰から合成した粒状ゼオライトの充填塔に対す
る下水２次処理水の通水試験結果では、アンモニア吸着
の破過点と飽和点での合成ゼオライトのアンモニア吸着
量は、それぞれ、３．２ｇＮＨ4 −Ｎ／ｋｇと４．９ｇ
ＮＨ4 −Ｎ／ｋｇで、窒素含有の土壌改良材が製造でき
た。As can be seen from these test results, the results of the test of the passage of the secondary sewage treated water to the packed tower of granular zeolite synthesized from sewage sludge incineration ash show that the synthesis at the breakthrough point and the saturation point of ammonia adsorption was performed. ammonia adsorption amount of zeolite, respectively, 3.2gNH 4 -N / kg and 4.9g
At NH 4 -N / kg, a soil improver containing nitrogen could be produced.
【００３５】また、通水時の破過点では、ゼオライト充
填塔出口の下水２次処理水のアンモニア濃度は１ｍｇ／
リットル以下となり、富栄養化の原因物質とされるアン
モニア性窒素濃度をほとんど除去することができた。At the breakthrough point during the passage of water, the ammonia concentration of the sewage secondary treatment water at the outlet of the zeolite packed tower was 1 mg /
Liters or less, almost eliminating the concentration of ammonia nitrogen, which is the cause of eutrophication.
【００３６】アンモニア性窒素を含有したゼオライト
は、肥料成分含有の土壌改良材として活用することがで
きる。The zeolite containing ammonia nitrogen can be used as a soil conditioner containing a fertilizer component.
【００３７】[0037]
【発明の効果】本発明により、従来有効利用が殆んどさ
れていなかった下水汚泥焼却炉灰から商品価値のあるカ
チオン交換容量が０．５ｅｑ／ｋｇ以上で、かつ、水中
で崩壊しない粒状ゼオライトを製造することができるよ
うになった。造粒された下水汚泥焼却灰からの粒状ゼオ
ライトは水中でその形状を保持すると共にカチオン交換
容量を有しているので、充填塔に充填してアンモニウム
イオン除去する水処理材等として有効に利用することが
できる。According to the present invention, a granular zeolite having a commercial value of cation exchange capacity of 0.5 eq / kg or more and not disintegrating in water is obtained from sewage sludge incinerator ash, which has hardly been used effectively in the past. Can now be manufactured. Granular zeolite from granulated sewage sludge incineration ash retains its shape in water and has a cation exchange capacity, so it can be effectively used as a water treatment material that fills a packed tower and removes ammonium ions. be able to.
【００３８】また、本発明により下水汚泥焼却炉灰から
得られた粒状ゼオライトに下水２次処理水のアンモニア
性窒素を吸着させる方法によれば、下水の浄化を行うと
共に、肥料成分を含んだ土壌改良材を得ることができ
る。According to the method of the present invention for adsorbing ammonia nitrogen in the secondary sewage sewage on granular zeolite obtained from sewage sludge incinerator ash, the sewage is purified and the soil containing fertilizer components is removed. An improved material can be obtained.
【図１】本発明の実施の第１形態に係るゼオライトの製
造方法のフロー図。FIG. 1 is a flowchart of a method for producing a zeolite according to a first embodiment of the present invention.
【図２】本発明の実施の第１形態に用いられるゼオライ
ト合成のプロセス図。FIG. 2 is a process diagram of zeolite synthesis used in the first embodiment of the present invention.
【図３】下水汚泥焼却灰からの合成ゼオライトの焼成温
度とカチオン交換容量の関係を示す図。FIG. 3 is a diagram showing the relationship between the sintering temperature and the cation exchange capacity of synthetic zeolite from sewage sludge incineration ash.
【図４】本発明の実施の第２形態による下水汚泥焼却炉
灰からの窒素含有土壌改良材の製法のためのゼオライト
試験におけるフローシートを示す図面。FIG. 4 is a drawing showing a flow sheet in a zeolite test for producing a nitrogen-containing soil conditioner from sewage sludge incinerator ash according to a second embodiment of the present invention.
【図５】下水汚泥焼却炉灰から得た粒状ゼオライトによ
る通水試験結果を示す通水時間とアンモニア濃度の関係
線図。FIG. 5 is a graph showing the relationship between water passage time and ammonia concentration, showing the results of a water passage test using granular zeolites obtained from sewage sludge incinerator ash.
１ ＭＦ処理槽 ２ ヘッダー管 ３ 流量計 ４ ゼオライト充填槽 Reference Signs List 1 MF treatment tank 2 Header tube 3 Flow meter 4 Zeolite filling tank
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０２Ｆ 1/28 Ｃ０２Ｆ 11/00 Ｍ 11/00 2115−4Ｈ Ｃ０５Ｇ 3/04 Ｃ０４Ｂ 35/00 ＺＡＢ Ｃ０９Ｋ 17/02 Ｈ Ｃ０５Ｇ 3/04 Ｂ０９Ｂ 3/00 ３０４Ｇ Ｃ０９Ｋ 17/02 Ｃ０４Ｂ 35/00 ＺＡＢＶ // Ｃ０９Ｋ 101:00 (72)発明者 高橋 哲郎 横浜市金沢区幸浦一丁目８番地１ 三菱重 工業株式会社横浜研究所内 (72)発明者 江草 知通 横浜市中区錦町12番地 三菱重工業株式会 社横浜製作所内──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical indication location C02F 1/28 C02F 11/00 M 11/00 2115-4H C05G 3/04 C04B 35/00 ZAB C09K 17/02 H C05G 3/04 B09B 3/00 304G C09K 17/02 C04B 35/00 ZABV // C09K 101: 00 (72) Inventor Tetsuro Takahashi 1-8-1, Koura, Kanazawa-ku, Yokohama-shi Mitsubishi Heavy Industries, Ltd. Inside Yokohama Research Laboratory (72) Inventor Chimichi Egusa 12 Nishikicho, Naka-ku, Yokohama-shi Yokohama Heavy Industries, Ltd.
Claims (2)
に水を加えて混練した後、押出造粒機で押出して一定粒
径に成形した後に乾燥し、さらに６５０℃〜７５０℃の
温度で焼成することを特徴とする下水汚泥焼却灰からの
粒状ゼオライトの製造方法。1. Water is added to a zeolite synthesized from sewage sludge incineration ash, kneaded, extruded by an extrusion granulator, formed into a certain particle size, dried, and further calcined at a temperature of 650 ° C. to 750 ° C. A method for producing granular zeolite from sewage sludge incineration ash.
水中のアンモニア性窒素を請求項１の方法で得られた粒
状ゼオライトに吸着させ、同粒状ゼオライトを土壌改良
材とすることを特徴とする下水汚泥焼却灰からの窒素含
有土壌改良材の製造方法。2. A method for adsorbing ammoniacal nitrogen in the sewage secondary treatment water from which suspended matter has been removed with a filter medium to the granular zeolite obtained by the method of claim 1, and using the granular zeolite as a soil improving material. A method for producing a nitrogen-containing soil conditioner from sewage sludge incineration ash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9123919A JPH1072213A (en) | 1996-05-30 | 1997-05-14 | Production of granular zeolite and nitrogen-containing soil conditioner from incineration ash of sewage sludge |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8-136435 | 1996-05-30 | ||
| JP13643596 | 1996-05-30 | ||
| JP9123919A JPH1072213A (en) | 1996-05-30 | 1997-05-14 | Production of granular zeolite and nitrogen-containing soil conditioner from incineration ash of sewage sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1072213A true JPH1072213A (en) | 1998-03-17 |
Family
ID=26460710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9123919A Withdrawn JPH1072213A (en) | 1996-05-30 | 1997-05-14 | Production of granular zeolite and nitrogen-containing soil conditioner from incineration ash of sewage sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1072213A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006027983A (en) * | 2004-07-21 | 2006-02-02 | Kanatsu Giken Kogyo Kk | Zeolite molding method and clayish kneaded zeolite composition |
| JP2006193368A (en) * | 2005-01-13 | 2006-07-27 | Denki Kagaku Kogyo Kk | Nitrogenous fertilizer composition |
| JP2007022834A (en) * | 2005-07-14 | 2007-02-01 | Denki Kagaku Kogyo Kk | Nitrogen fertilizer composition |
| JP2007223868A (en) * | 2006-02-27 | 2007-09-06 | Yoshiyuki Suzuki | Method for manufacturing ceramic solid article |
| JP2009011883A (en) * | 2007-06-29 | 2009-01-22 | Toyo Univ | Apparatus and method for natural penetration clarification of polluted water using sand recycled from incinerator fly ash |
-
1997
- 1997-05-14 JP JP9123919A patent/JPH1072213A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006027983A (en) * | 2004-07-21 | 2006-02-02 | Kanatsu Giken Kogyo Kk | Zeolite molding method and clayish kneaded zeolite composition |
| JP2006193368A (en) * | 2005-01-13 | 2006-07-27 | Denki Kagaku Kogyo Kk | Nitrogenous fertilizer composition |
| JP2007022834A (en) * | 2005-07-14 | 2007-02-01 | Denki Kagaku Kogyo Kk | Nitrogen fertilizer composition |
| JP2007223868A (en) * | 2006-02-27 | 2007-09-06 | Yoshiyuki Suzuki | Method for manufacturing ceramic solid article |
| JP2009011883A (en) * | 2007-06-29 | 2009-01-22 | Toyo Univ | Apparatus and method for natural penetration clarification of polluted water using sand recycled from incinerator fly ash |
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