JPS63305991A - Process for removing phosphorus by utilizing burnt ashes - Google Patents
Process for removing phosphorus by utilizing burnt ashesInfo
- Publication number
- JPS63305991A JPS63305991A JP14181687A JP14181687A JPS63305991A JP S63305991 A JPS63305991 A JP S63305991A JP 14181687 A JP14181687 A JP 14181687A JP 14181687 A JP14181687 A JP 14181687A JP S63305991 A JPS63305991 A JP S63305991A
- Authority
- JP
- Japan
- Prior art keywords
- phosphorus
- wastewater
- waste water
- ash
- burnt
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000011574 phosphorus Substances 0.000 title claims abstract description 41
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 18
- 235000002918 Fraxinus excelsior Nutrition 0.000 title abstract 7
- 239000002956 ash Substances 0.000 title abstract 7
- 239000002351 wastewater Substances 0.000 claims abstract description 57
- 239000010802 sludge Substances 0.000 claims abstract description 19
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 15
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 15
- 239000004571 lime Substances 0.000 claims abstract description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000292 calcium oxide Substances 0.000 abstract description 5
- 235000012255 calcium oxide Nutrition 0.000 abstract description 5
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract 1
- 238000011049 filling Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000010865 sewage Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000011575 calcium Substances 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229940043430 calcium compound Drugs 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 210000002700 urine Anatomy 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- ZQBZAOZWBKABNC-UHFFFAOYSA-N [P].[Ca] Chemical compound [P].[Ca] ZQBZAOZWBKABNC-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 150000001674 calcium compounds Chemical class 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000010840 domestic wastewater Substances 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 239000002367 phosphate rock Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 241001441724 Tetraodontidae Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、生活廃水や尿尿廃水等の処理施設から放流さ
れる廃水中のリンの除去に利用されるものであり、階段
式焼却炉から排出される汚泥ケーキの焼却灰を用いて、
廃水内のリンを除去する方法に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention is used to remove phosphorus from wastewater discharged from treatment facilities for domestic wastewater, urine wastewater, etc. Using the incineration ash of sludge cake discharged from
Relating to a method for removing phosphorus in wastewater.
（従来の技術）
産業用廃水や生活廃水、尿尿廃水等の処理施設から排出
される廃水の中には、多量のリン成分が含まれており、
河川や沼湖に於ける藻の異常発生の如き様々な弊害を引
き起す。これ等の弊害を防止するため、従来から、廃水
内のリンの除去が行なわれており、■石灰等を用いる化
学除去法、■リン鉱石等を用いる晶析除却法、■活性汚
泥を用いる生物学的除去法等が実用に供されている。(Prior art) Wastewater discharged from treatment facilities for industrial wastewater, domestic wastewater, urine wastewater, etc. contains a large amount of phosphorus components.
It causes various harmful effects such as abnormal growth of algae in rivers and lakes. In order to prevent these harmful effects, phosphorus in wastewater has been removed from wastewater for a long time. ■Chemical removal method using lime, etc.; ■Crystallization removal method using phosphate rock, etc.; ■Biological removal method using activated sludge. Scientific removal methods are in practical use.
しかし、前記化学処理法や晶析処理法に於いては、石灰
やリン鉱石等の処理材を多量に必要とし、リン除去処理
のランニングコストが嵩むという問題がある。However, the chemical treatment method and crystallization treatment method require a large amount of treatment materials such as lime and phosphate rock, and there is a problem that the running cost of the phosphorus removal treatment increases.
また、生物学的除去法にあっては、脱リン後の汚泥を再
処理する必要があす、リンの捕捉回収に手数がかかる等
の難点がある。In addition, the biological removal method has disadvantages such as the need to reprocess the sludge after dephosphorization and the time required to capture and recover phosphorus.
（発明が解決しようとする問題点）
本発明は、従前の廃水内のリンの除去処理に於ける上述
の如き問題、即ち■化学的処理や折部的処理に於いては
、処理材を別に必要とするため、処理費の低減を図り難
いこと、及び■生物学的除去法では、脱リン後の汚泥の
再処理に手数がかかること、等の問題を解決せんとする
ものであり、下廃水汚泥等を階段式焼却炉で焼却処理し
た際の燃焼灰を活用し、廃水の汚濁を生ずることなしに
、これに含まれるリンを効率的に除去し得るようにした
リンの除去方法を提供するものである。(Problems to be Solved by the Invention) The present invention solves the above-mentioned problems in the conventional treatment for removing phosphorus from wastewater. This is an attempt to solve problems such as the fact that it is difficult to reduce treatment costs because the process requires a Provides a phosphorus removal method that utilizes combustion ash from incineration of wastewater sludge, etc. in a stepped incinerator, and efficiently removes phosphorus contained in wastewater without polluting the wastewater. It is something to do.
（問題点を解決するための手段）
尿尿汚泥や下廃水汚泥は、通常脱水処理を施して水分が
６５〜７０％以−ヒの所謂脱水ケーキとした後、階段式
焼却炉で焼却し、焼却灰を建設用資材として再活用した
り、或いは哩立地へ投棄することにより処理されている
。(Means for solving the problem) Urinary urine sludge and sewage sludge are usually dehydrated to form a so-called dehydrated cake with a moisture content of 65 to 70% or more, and then incinerated in a step incinerator. Incineration ash is disposed of by reusing it as construction material or by dumping it in a rural area.
而して、汚泥の脱水処理に際しては、一般に相当量の消
石灰が汚泥内へ注入されるため、この脱水ケーキ（以下
、石灰系汚泥ケーキと呼ぶ）を焼却した後の焼却灰中に
は、多量の生石灰（Ｃａｂ）が存在することになる。When dewatering sludge, a considerable amount of slaked lime is generally injected into the sludge, so after incinerating this dehydrated cake (hereinafter referred to as lime-based sludge cake), a large amount of quicklime (Cab) will be present.
また、階段式焼却炉を用いた汚泥の焼却に於いては、汚
泥が燃焼用人床の上で１１００°Ｃ〜１２００°Ｃの高
温燃焼をするため、その燃焼灰は半溶融状になる。その
結果、焼却炉本体のスラグ出口からは、所謂多孔性の軟
質クリンカー状の焼却灰が排出されてくる。Furthermore, in the incineration of sludge using a stepped incinerator, the sludge is burned at a high temperature of 1100° C. to 1200° C. on the combustion floor, so that the combustion ash becomes semi-molten. As a result, incineration ash in the form of porous soft clinker is discharged from the slag outlet of the incinerator main body.
本件発明者は、前記階段式焼却炉を用いて石灰系汚泥ケ
ーキを焼却処理した際の焼却灰の成分並びにその形態に
注目し、これを廃水中のリンの除去に於ける処理材とし
て活用することを着想すると共に、当該焼却灰を用いて
廃水中のリンの除去試験を数多〈実施した。The inventor of the present invention focused on the composition and form of the incinerated ash obtained when lime-based sludge cake was incinerated using the stepped incinerator, and utilized this as a treatment material in the removal of phosphorus from wastewater. After coming up with this idea, we conducted a number of tests to remove phosphorus from wastewater using the incineration ash.
本件発明は、上述の如き着想並びにリンの除去試験を基
にして創作されたものであり、階段式焼却炉により焼却
処理した石灰系汚泥ケーキの焼却灰に廃水を接触させ、
前記焼却灰により廃水中のリンを捕捉することを発明の
基本構成とするものである。The present invention was created based on the above-mentioned ideas and phosphorus removal tests, and involves bringing wastewater into contact with the incinerated ash of a lime-based sludge cake that has been incinerated in a step incinerator.
The basic structure of the invention is to capture phosphorus in wastewater using the incineration ash.
（作用）
石灰系汚泥ケーキを焼却した後の焼却灰には多量のＣａ
Ｏが含まれており、且つ焼却灰自体は多孔性の軟質スラ
グ状になっている。(Function) The incineration ash after incinerating the lime-based sludge cake contains a large amount of Ca.
O is included, and the incineration ash itself is porous and soft slag-like.
前記焼却灰と処理すべき廃水とを接触させることにより
、廃水中のリン成分と焼却灰中のカルシウム成分が反応
してリン・カルシウム化合物が生成され、これが焼却灰
内に捕捉されて行く。By bringing the incineration ash into contact with the wastewater to be treated, the phosphorus component in the wastewater and the calcium component in the incineration ash react to generate a phosphorus-calcium compound, which is captured in the incineration ash.
尚、焼却灰は前述の如くポーラスな軟質クリンカー状の
ものであるため、生成されたリン・カルシウム化合物は
容易に焼却灰表面に吸着される。Incidentally, since the incinerated ash is porous and soft clinker-like as described above, the generated phosphorus/calcium compound is easily adsorbed on the surface of the incinerated ash.
又、処理済みの廃水が、焼却灰の微粉末によって再汚濁
されることは、全くない。Moreover, the treated wastewater is never re-contaminated with fine powder of incineration ash.
（実施例）
以下、第１図乃至第７図に基づいて本発明の一実施例を
説明する。(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 7.
第１図乃至第３図は、本発明の第１実施例に係る固定床
型装置を用いたリンの除去方法を示すものであり、図に
於いて１は、焼却灰充填体、２は水路、３は下水処理装
置等から排出されてくる二次処理済みの下、廃水、３は
リン除去済みの下廃水である。1 to 3 show a method for removing phosphorus using a fixed bed type device according to a first embodiment of the present invention. , 3 is secondary treated wastewater discharged from a sewage treatment device, etc., and 3 is sewage wastewater from which phosphorus has been removed.
前記焼却灰充填体１は、ステンレス鋼製金網の中に、粒
径が１０ ｍｍ 、２ｆ ・−２０ｍｍ ｌ程度の、階
段式焼却炉から排出された石灰系ケーキの焼却灰を充填
したものであり、前記水路２内へ着脱自在に配設されて
いる。The incinerated ash filling body 1 is a stainless steel wire mesh filled with incinerated ash of a lime cake discharged from a step incinerator with a particle size of about 10 mm, 2 f -20 mm l. , is disposed in the waterway 2 so as to be freely attachable and detachable.
第１表 焼却灰の成分
（焼却物 石灰系ケーキ）
尚、前記階段式焼却炉から排出される石灰系ケーキの焼
却灰は、第１表に示す如き成分から形成されており、焼
却灰中に含まれるＣａＯが、前述の如く下廃水中のリン
と反応してリン・カルシウム化合物を生じ、これが多孔
質の焼却灰表面に吸着されることにより、リンの除去が
行なわれる。Table 1 Components of Incineration Ash (Incineration Material Lime-based Cake) The incineration ash of the lime-based cake discharged from the step incinerator is composed of the components shown in Table 1, and the incineration ash contains As mentioned above, the CaO contained reacts with phosphorus in the wastewater to produce a phosphorus-calcium compound, which is adsorbed on the surface of the porous incineration ash, thereby removing phosphorus.
又、第４図乃至第６図は、前記焼却灰による下廃水中の
リン除去の基礎テストデータを示すものであり’１２５
０ｃｃの２次処理済みの下廃水（１８°〜２゜づつ投入
後、ロータリー攪拌・混合をして下廃中のＰＯ，−Ｐ
濃度とＣａ１度及びＰＨ１ｍを夫々測定したものである
。尚、第５図に於いて、ｃａが増加しているのは、焼却
灰中のＣａ が液中に溶出してＰＯ，−Ｐと結合する
ことにより、焼却灰へのＰＯ。In addition, Figures 4 to 6 show basic test data for the removal of phosphorus from wastewater using the incinerated ash.
After adding 0cc of secondary treated wastewater (18° to 2°), perform rotary stirring and mixing to remove PO, -P in the wastewater.
The concentration, Ca1 degree, and PH1m were measured respectively. In Fig. 5, the increase in ca is due to Ca in the incinerated ash eluting into the liquid and combining with PO and -P, resulting in PO being added to the incinerated ash.
−Ｐの吸着を助けているものと想定される。- It is assumed that this helps the adsorption of P.
前記第１図乃至第３図に於いて、下廃水処理施設（図示
省略）う１ら排出された２次処理済みの下廃水３は、水
路２を通して焼却灰充填体１へ到達し、水路２の落差に
より、充填体１内を３０〜６０分間かかつて通過する。In FIGS. 1 to 3, the secondary treated sewage water 3 discharged from the sewage water treatment facility (not shown) reaches the incinerated ash filling body 1 through the water channel 2, and then passes through the water channel 2. Depending on the head difference, the material passes through the packing 1 for 30 to 60 minutes.
廃水３内のリンは、充填体１内を流通する間に焼却灰中
のＣａと反応し、生成′されたリン拳カルシウム化合物
が順次法表面に吸着されて行く。Phosphorus in the waste water 3 reacts with Ca in the incineration ash while flowing through the packing body 1, and the generated Rinken calcium compound is successively adsorbed on the surface of the ash.
本実施例の場合、焼却灰充填体の寸法が１ｍ（Ｈ）Ｘｉ
ｍもｖ）ｘ２ｍ（Ｌ）、廃水の充填体通過時間が３０〜
６０分のとき、約２ｉ／ｆ（の廃水の処理が可能であり
、廃水中のリン濃度（約１０ ＰＰｍ ）をＩＰＰｍ程
度にまで引下げることが出来る。In the case of this example, the size of the incinerated ash filling body is 1 m (H) Xi
m also v) x 2 m (L), wastewater passage time through packing body is 30 ~
In 60 minutes, approximately 2 i/f (of wastewater can be treated), and the phosphorus concentration (approximately 10 PPm) in the wastewater can be reduced to about IPPm.
前記焼却灰充填体１のリン除去能力は、時間の経過と共
に低下する。除去能力が規定（直にまで低下すれば、焼
却灰充填体１を取替え、使用済みの充填体１は、埋立そ
の他の方法により処理される。The phosphorus removal ability of the incinerated ash filling body 1 decreases over time. When the removal capacity drops to a specified level, the incinerated ash filling body 1 is replaced, and the used filling body 1 is disposed of by landfilling or other methods.
尚、前記第１実施例では、水路２内へ焼却灰充填体１を
直接浸漬し、水路の勾配によって廃水３を流通せしめる
構成としているが、充填塔内に焼却灰充填体１を配設し
、この中を廃水を流通せしめる構成としてもよい。In the first embodiment, the incinerated ash packing 1 is directly immersed in the water channel 2, and the wastewater 3 is made to flow through the slope of the water channel, but the incinerated ash packing 1 is arranged in the packed tower. , it may be configured to allow wastewater to flow through it.
第７図は、本発明の他の実施例を示すものであり、流動
床槽リン除去装置を使用するものである。FIG. 7 shows another embodiment of the present invention, which uses a fluidized bed tank phosphorus removal device.
図に於いて、６は流動槽本体、７は階段式焼却炉からの
石灰系ケーキ焼却灰、８はエアーリフト管、９は灰・水
分離器、１ｏは廃水入口、１１は処理済み廃水の出口、
１２は灰取出し口、１３はポンプ、１４はパンフル、１
５は補助タンク、１６は圧縮空気、１７はスクリーンで
ある。In the figure, 6 is the fluidized tank body, 7 is the lime cake incineration ash from the step incinerator, 8 is the air lift pipe, 9 is the ash/water separator, 1o is the wastewater inlet, and 11 is the treated wastewater. Exit,
12 is an ash outlet, 13 is a pump, 14 is a panful, 1
5 is an auxiliary tank, 16 is compressed air, and 17 is a screen.
流動槽本体６内には、所定量の廃水３と、粒径が３〜８
ｍ、ｍ程度の焼却灰７とが入れられており、圧縮空気１
６をエアリフト管８の下方より上方へ向けて噴出するこ
とにより、焼却灰７が矢印方向へ循環流動して流動層が
形成され、廃水３と均一に混合・接触する。廃水３と焼
却灰７との混合物は、灰・水分離器９内に於いて分離さ
れ、焼却灰７は沈降し、また廃水３は出口１１より外部
へ排出されて行く。Inside the fluidized tank body 6, there is a predetermined amount of wastewater 3 and a particle size of 3 to 8.
About 1,000 m of incinerated ash 7 is placed in the tank, and compressed air 1
By ejecting the ash 6 upward from the bottom of the air lift pipe 8, the incinerated ash 7 circulates and flows in the direction of the arrow, forming a fluidized bed, and uniformly mixes with and contacts the wastewater 3. A mixture of waste water 3 and incinerated ash 7 is separated in an ash/water separator 9, incinerated ash 7 settles, and waste water 3 is discharged to the outside from outlet 11.
尚、本実施例では、処理すべき廃水３を入口１゜より連
続的に供給する所謂連続処理方式としているが、流動槽
本体６内に所定量の廃水３を貯留し、これをバッチ式に
処理することも可能である。In this embodiment, the so-called continuous treatment method is used in which the wastewater 3 to be treated is continuously supplied from the inlet 1°, but a predetermined amount of the wastewater 3 is stored in the fluidized tank body 6 and is processed in a batch manner. It is also possible to process
焼却灰流動層７の処理能力が低下すれば、入口１０及び
出口１１を閉、灰取出し口１２を開にしてポンプ１３を
起動し、水・灰の混合物を出口１２から排出すると共に
、スクリーン１７で使用済みの焼却灰７を分離する。そ
して、流動槽本体６内の焼却灰７の排出が完了すれば、
灰供給口（図示省略）から新たな焼却灰７を供給する。When the processing capacity of the incinerated ash fluidized bed 7 decreases, the inlet 10 and outlet 11 are closed, the ash outlet 12 is opened, the pump 13 is started, and the water/ash mixture is discharged from the outlet 12. The used incineration ash 7 is separated. Then, once the discharge of the incinerated ash 7 in the fluidized tank main body 6 is completed,
New incineration ash 7 is supplied from an ash supply port (not shown).
又、前記排出した団用済みの焼却灰７は、階段式焼却炉
からの排出灰と一緒に埋立投棄したり、土壌改良材とし
て再利用する。Further, the discharged incinerated ash 7 is dumped in a landfill together with the ash discharged from the step-type incinerator, or is reused as a soil improvement material.
本実施例の場合、粒径が約５フグの焼却灰２００１を流
動槽本体６内へ充填して焼却灰流動層を形成しており、
且つこの時の処理量は約３ｊ？／ｍｉｎであり、入口１
０に於ける下廃水３中のリン濃度（約１０ ＰＰｍ ）
が、出口１１に於いて約Ｉ ＰＰｍにまで低下する。In the case of this embodiment, incinerated ash 2001 with a particle size of about 5 pufferfish is filled into the fluidized tank body 6 to form an incinerated ash fluidized bed.
And the amount of processing at this time is about 3j? /min, and entrance 1
Phosphorus concentration in wastewater 3 at 0 (approximately 10 PPm)
is reduced to approximately I PPm at outlet 11.
（効果）
本発明は上述の通り、階段式焼却炉により石灰系汚泥ケ
ーキを焼却処理した場合の燃焼灰を処理材とする構成と
しているため、従前の蘂品を使用するリンの除去法に比
較して、廃水処理費の大幅な削減が可能となる。(Effects) As mentioned above, the present invention uses the combustion ash obtained when lime-based sludge cake is incinerated in a stepped incinerator as a treatment material, so it is compared to the conventional method of removing phosphorus using a sludge. This makes it possible to significantly reduce wastewater treatment costs.
また、階段式焼却炉からの焼却灰は、多孔質の軟質スラ
グ状であり、粒径が３〜２０ ｍｍ ｐｆ程度の粒体を
容易に得ることが出来ると共に、生石灰（Ｃａｂ）を多
量に含有している。その結果、廃水中のリンを極めて効
率よく捕捉することが出来るうえ、焼却灰により処理済
みの廃水に汚濁を生ずることも無く、長時間の連続運転
が可能となる。In addition, the incinerated ash from the stepped incinerator is porous and soft slag-like, and particles with a particle size of about 3 to 20 mm pf can be easily obtained, and it also contains a large amount of quicklime (Cab). are doing. As a result, phosphorus in wastewater can be captured extremely efficiently, and the treated wastewater is not polluted with incineration ash, allowing continuous operation for long periods of time.
更に、使用済みの焼却灰は、焼却炉からの焼却灰と一緒
に処理することが出来ると共に、土壌改良材としても活
用可能である。Furthermore, the used incineration ash can be treated together with the incineration ash from the incinerator, and can also be used as a soil improvement material.
本発明は上述の通り、資源の再利用とリンの効率的除去
を並行して行えるという、優れた実用的効用を宵するも
のである。As described above, the present invention has excellent practical utility in that resource reuse and phosphorus removal can be performed in parallel.
第１図は、水路内へ焼却灰充填体を浸漬した状態を示す
平面図であり、第２図は第１図のＡ−Ａ挽断面図、第３
図は第１図のＢ−Ｂ挽断面図であるＯ
第４図は、石灰系汚泥ケーキの焼却灰によるリン吸着特
性、第５図はリン除去処理中の下廃水内のカルシウム成
分の変化、及び第６図はリン除去処理中の下廃水のＰＨ
１直を示すものである。
第７図は、本発明の実施に使用する流動床型リン除去装
置の系統概要図である。
１ 焼却灰充填体
２ 水路
３ 廃水
６ 流動槽本体
７ 焼却灰流動層
特許出願人 株式会社 タ り マ代表者 福田
順吉
、 −９０の ト■
已
η“
＼１・
／Ｙ ”）
／ ハ よ
。 昌、Ａ
６１７一Fig. 1 is a plan view showing the incinerated ash filling body immersed in the waterway, Fig. 2 is a cross-sectional view taken along the line A-A in Fig. 1, and Fig.
Figure 4 shows the phosphorus adsorption characteristics of the incinerated ash of lime-based sludge cake; Figure 5 shows the changes in calcium components in sewage water during phosphorus removal treatment; and Figure 6 shows the pH of sewage wastewater during phosphorus removal treatment.
This indicates one shift. FIG. 7 is a schematic diagram of a fluidized bed type phosphorus removal apparatus used in the practice of the present invention. 1 Incineration ash filling body 2 Water channel 3 Waste water 6 Fluidized tank body 7 Incineration ash fluidized bed patent applicant Tarima Co., Ltd. Representative Junkichi Fukuda, -90 ト■ 已 ``\1・ /Y '') / HA YO. Chang, A 6171
Claims (3)
キの焼却灰に廃水を接触させ、前記焼却灰により廃水中
のリンを捕捉することを特徴とする焼却灰を利用した廃
水中のリン除去方法。(1) Removal of phosphorus from wastewater using incinerated ash, characterized in that wastewater is brought into contact with incinerated ash of a lime-based sludge cake incinerated in a stepped incinerator, and phosphorus in the wastewater is captured by the incinerated ash. Method.
定床型焼却灰とした特許請求の範囲第１項に記載の焼却
灰を利用した廃水中のリン除去方法。(2) A method for removing phosphorus from wastewater using incinerated ash according to claim 1, wherein the incinerated ash is of a fixed bed type incinerated ash arranged in a packed tower or a waste water channel.
した特許請求の範囲第１項に記載の焼却灰を利用した廃
水中のリン除去方法。(3) A method for removing phosphorus from wastewater using incinerated ash according to claim 1, wherein the incinerated ash is of a fluidized bed type incinerated ash formed in a fluidized tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14181687A JPS63305991A (en) | 1987-06-05 | 1987-06-05 | Process for removing phosphorus by utilizing burnt ashes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14181687A JPS63305991A (en) | 1987-06-05 | 1987-06-05 | Process for removing phosphorus by utilizing burnt ashes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63305991A true JPS63305991A (en) | 1988-12-13 |
Family
ID=15300792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14181687A Pending JPS63305991A (en) | 1987-06-05 | 1987-06-05 | Process for removing phosphorus by utilizing burnt ashes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63305991A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
1987
- 1987-06-05 JP JP14181687A patent/JPS63305991A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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