JPS62286596A - Biological treatment of nitrogen-containing waste water - Google Patents
Biological treatment of nitrogen-containing waste waterInfo
- Publication number
- JPS62286596A JPS62286596A JP61130384A JP13038486A JPS62286596A JP S62286596 A JPS62286596 A JP S62286596A JP 61130384 A JP61130384 A JP 61130384A JP 13038486 A JP13038486 A JP 13038486A JP S62286596 A JPS62286596 A JP S62286596A
- Authority
- JP
- Japan
- Prior art keywords
- coke oven
- oven gas
- treatment
- nitrogen
- gas liquid
- 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
- 239000002351 wastewater Substances 0.000 title claims description 9
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 title claims description 4
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000571 coke Substances 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 16
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 10
- 239000000852 hydrogen donor Substances 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 17
- 239000000126 substance Substances 0.000 abstract description 4
- 230000000802 nitrating effect Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 17
- 229910052757 nitrogen Inorganic materials 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000010802 sludge Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001546 nitrifying effect Effects 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- KYARBIJYVGJZLB-UHFFFAOYSA-N 7-amino-4-hydroxy-2-naphthalenesulfonic acid Chemical compound OC1=CC(S(O)(=O)=O)=CC2=CC(N)=CC=C21 KYARBIJYVGJZLB-UHFFFAOYSA-N 0.000 description 1
- 241001474374 Blennius Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000386 donor Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229940005654 nitrite ion Drugs 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- -1 thionano Chemical compound 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y02W10/12—
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
この発ｑは、高濃度のアンモニアを含んｔ！コークス炉
ガス液の生物学的脱窒処理に関するものである。[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] This emitted q contains a high concentration of ammonia. This invention relates to biological denitrification treatment of coke oven gas liquid.
石炭を乾留してコークスを製造する過程で生成するコー
クス炉ガス′を夜中には、フェノール、ンアノ化水素、
＠化水素、チオンアノ、アンモニア等の有害成分が含ま
れているため、その侭ではｔｌｉ流出来ず、一般的には
活性汚泥処理した後、放流している。In the middle of the night, the coke oven gas produced in the process of carbonizing coal to produce coke is converted into phenol, anodized hydrogen,
Because it contains harmful components such as hydrogen chloride, thionano, and ammonia, it cannot be discharged as it is, and is generally discharged after being treated with activated sludge.
近年、湖ｉａ、海洋での赤潮発生が問題となっており、
その発生原因の一つとして窒素が考えられている。In recent years, the occurrence of red tide in lakes and oceans has become a problem.
Nitrogen is thought to be one of the causes of this occurrence.
コークス炉ガスｔｅＥ中には窒素成分としてアノモニア
が４０００〜００００＋ｎｇ／ｌ存在し、標準的活性汚
泥法では除去出来ず、一般的には、スチーム、ストリノ
ビシグ法が採用されている。Coke oven gas teE contains 4000 to 0000+ ng/l of ammonia as a nitrogen component, which cannot be removed by standard activated sludge methods, and steam and Strinobisig methods are generally employed.
この方法はエネルギーの多消費であるほかに次のような
欠点を持っている。This method consumes a lot of energy and has the following drawbacks.
（１）アルカリ無添加のストリッピシグでは、塩化物。(1) For strippisig without alkali additives, chloride.
チオシア′Ｊ酸、チオ硫酸イ１し等と、塩の形で存在す
る固定アンモニアは除去出来ない。Fixed ammonia present in the form of salts such as thiothia'J acid and thiosulfuric acid cannot be removed.
（２）またアルカリ添加によるストリッピシグ法では、
シアン、硫化水素除去が困難で、前段処理としてアルカ
リ無添加のストリッピシグ法を必要とし、設備２Ｍ転経
費の増大を招（ほか全体としても除去率の変動を招き易
く、これがために後段処理としての活性汚泥に悪影響を
与九、コークス炉ガス液の安定処理が懸念される。(2) Also, in the strippisig method using alkali addition,
It is difficult to remove cyanide and hydrogen sulfide, and a stripping method without alkali additives is required as a first-stage treatment, which increases the cost of converting 2M equipment (in addition, the overall removal rate tends to fluctuate, which makes it difficult to use a stripping method as a second-stage treatment). There are concerns about the negative impact on activated sludge and the stable treatment of coke oven gas liquid.
従っ゛Ｃ１アルカリ添加によろストリッピ、グ処理を行
っても窒素の完全除去は出来ず、また多量のエネルギー
を消費する結果となる。Therefore, even if filter stripping or cleaning treatment is performed by adding C1 alkali, nitrogen cannot be completely removed, and a large amount of energy is consumed.
一方最近下水等の排液に対して、窒素除去方法として生
物学的脱窒法が採用されている。この方法（よ従来の標
準的活性汚泥法に比較して、槽が二つ必要となる。つま
り、好気性雰囲気下の硝化槽内で硝化菌を増殖させ、流
入するアンモニアを次式によって酸化する。On the other hand, biological denitrification has recently been adopted as a nitrogen removal method for wastewater such as sewage. This method (compared to the conventional standard activated sludge method) requires two tanks.In other words, nitrifying bacteria are grown in the nitrification tank under an aerobic atmosphere, and the inflowing ammonia is oxidized according to the following formula. .
ＮＨ４＋ ３／２０ ２− Ｎ ｏ ２ ＋ Ｈ
２ｏ＋ｚ ＨＮ Ｏ、＋１／２０２→Ｎｏ。NH4+ 3/20 2- N o 2 + H
2o+z HN O, +1/202 → No.
硝化菌によって生成した亜硝酸、硝酸イオノ（ま次工程
の嫌気性雰囲気下にある脱窒槽内の脱窒菌によって、次
式により窒素ガス迄に還元されろ。Nitrite and nitrate ion produced by nitrifying bacteria are reduced to nitrogen gas by the denitrifying bacteria in the denitrifying tank in an anaerobic atmosphere in the next step using the following formula.
Ｎｏ２＋３Ｈ−１／２Ｎ２＋Ｈ，Ｏ＋ＯＨ税窒菌脱窒る
脱窒に（よ水素供与体（Ｈｄｏｎｏｒ’）が必要であり
、排水中に含まれる場合は系外より添加する必要はない
が、一般的には、メタノールを添加している。No2+3H-1/2N2+H,O+OH Tax Nitrogen denitrification A hydrogen donor (Hdonor') is required for denitrification, and if it is contained in wastewater, there is no need to add it from outside the system, but generally , methanol is added.
この生物学的脱窒法をコークス炉ガス液（ここではスチ
ームストリソビッグ前のガス液）に適用した場合、窒素
除去は可能となるが、除去に必要な水Ｔ、供与体が不足
し系外よりメク、！−ル等の高価な薬品を添加すること
となり、生物学的脱窒法の運転経費を増加させるなどの
問題がある。When this biological denitrification method is applied to a coke oven gas liquid (in this case, the gas liquid before steam strisobig), it is possible to remove nitrogen, but the water T and donor necessary for removal are insufficient and the system is removed. More meku! There are problems such as the addition of expensive chemicals such as alcohol, which increases the operating costs of biological denitrification methods.
従って、メタノール等の薬品に１代わる安価な、廃液の
利用が望まれる。Therefore, it is desired to use waste liquid as an inexpensive alternative to chemicals such as methanol.
本発明は、前述の従来技術の問題点を解決するためのも
のであり、一般的に用いられている脱窒剤であるメタノ
ールに代わり、アルコール製造過程で発生するアルコー
ル廃液を利用し、効率良く。The present invention is intended to solve the problems of the prior art described above, and instead of methanol, which is a commonly used denitrifying agent, the present invention utilizes alcohol waste liquid generated in the alcohol manufacturing process, and efficiently .
生物学的脱窒処理させることを目的とするものである。The purpose is to perform biological denitrification treatment.
本発明は、高濃度アンモニアを含有したコークス炉ガス
液を硝化−２説窒する生物学的処理方法に放て、脱窒の
際に水素供与体として、アルコール廃液を側周すること
を特徴とする窒素含有廃水の生物学的処理方法である。The present invention is characterized in that a coke oven gas liquid containing a high concentration of ammonia is released into a biological treatment method for nitrification and nitrification, and alcohol waste liquid is used as a hydrogen donor during denitrification. This is a biological treatment method for nitrogen-containing wastewater.
本発明は１．メタ、ノー・ルに代わる水素供与体として
の脱窒剤を鋭意検討した結果、ｔＩ！からアル：１−ル
８製造する際に副成するアルコール（廃液アルコール）
がメタノールと同等の説窒効采を示すことを見知しなさ
れたものである。The present invention consists of 1. As a result of intensive research into denitrifying agents as hydrogen donors to replace meta, nor-ru, we found that tI! From Al: Alcohol by-produced during the production of 1-8 (waste alcohol)
It was discovered that the nitrification effect was equivalent to that of methanol.
次の第１表にアルコール廃液の性状を示す。Table 1 below shows the properties of the alcohol waste liquid.
第１表に示したようにアルコール廃液中のＣＯＤ。COD in alcohol waste liquid as shown in Table 1.
８０１）成分が水素供与体として利用されるが、多量に
添加した場合には、ＣＯＤ、 ＢＯＤ処理が不十分とな
るため、窒素（ご見合った添加をしなければならない。801) component is used as a hydrogen donor, but if a large amount is added, COD and BOD treatment will be insufficient, so nitrogen (nitrogen must be added accordingly).
アルコール廃液は現在、活性汚泥栄養剤、ノリ養殖用に
有効利用され、又力ＩＪ （Ｋ）を添加して有機肥料
としも利用されている。、微生物に対する有害な重金属
類（よ含有されていない。Alcohol waste liquid is currently being effectively used as an activated sludge nutrient and for seaweed cultivation, and is also used as an organic fertilizer by adding IJ (K). , does not contain heavy metals that are harmful to microorganisms.
次に本発明の実施例について述へろ、。Next, examples of the present invention will be described.
実施例１
第１図は本発明を実施するための実験装置の説明図であ
る。Example 1 FIG. 1 is an explanatory diagram of an experimental apparatus for carrying out the present invention.
図において、１；測定槽、２：恒温槽、３：攪拌機、
４： Ｎ０ＩＩ含有汚泥混合液、５：アルコール廃液を
示す。In the figure, 1: measurement tank, 2: constant temperature bath, 3: stirrer,
4: N0II-containing sludge mixed liquid; 5: alcohol waste liquid.
第１図に示す実験装置によりアルコール廃液が使用可能
か試験を行った。A test was conducted to see if alcohol waste liquid could be used using the experimental apparatus shown in FIG.
即ら、測定槽１内にＮｏイを含有した汚泥混合を伐４ヲ
入れ１度３０〜３５℃に保ち、アルコ−・ル廃液５を規
定量添加して、一定時間置きにＮＯ２、ＮＯ３を測定し
た。この結果を第２表に示す。That is, a sludge mixture containing No. 2 is placed in a measurement tank 1, kept at 30 to 35 degrees Celsius, and a specified amount of alcohol waste 5 is added, and NO2 and NO3 are added at regular intervals. It was measured. The results are shown in Table 2.
第２表の結果より、メタノールと同様に脱窒剤として、
アルコール廃液は利用出来ることが判明した。From the results in Table 2, like methanol, it can be used as a denitrifying agent.
It turned out that alcohol waste liquid can be used.
実施例２
第２図は本発明方法を実施するための連続実験装置の説
明図である。Example 2 FIG. 2 is an explanatory diagram of a continuous experimental apparatus for carrying out the method of the present invention.
図において、１１： コークス炉ガス液、１２；硝化槽
、１３：苛性ソーダ、１４：硝化液、１５；脱窒槽、１
６：循環液、１７：沈殿槽である。In the figure, 11: coke oven gas liquid, 12: nitrification tank, 13: caustic soda, 14: nitrification liquid, 15: denitrification tank, 1
6: Circulating fluid, 17: Sedimentation tank.
高濃度アンモニアを含有したコークス炉ガス液１１は好
気性雰囲気下の硝化ｐ１１１２に入す、ＢＯＤの酸化処
理されると同時にアンモニアが酸化され１”Ｎ０２−Ｎ
、Ｎｏ、−Ｎが生成さレル。The coke oven gas liquid 11 containing a high concentration of ammonia is put into the nitrification process 1112 under an aerobic atmosphere, and at the same time the BOD is oxidized, ammonia is oxidized to 1"N02-N
, No, -N is generated.
Ｎｏ２−・Ｎ、Ｎｏ、−Ｎが生成するため、ｐ Ｈが低
下する。。Since No2-.N, No, and -N are generated, the pH decreases. .
硝化菌の最適な領域を１推持するため、苛性ソーブ１３
が添加され、硝化槽１２内ｐＨを一定に保っている。To maintain the optimal area of nitrifying bacteria, caustic sorb 13
is added to keep the pH inside the nitrification tank 12 constant.
硝化槽１２で生成さｆｉたＮｏ２ Ｎ、ＮＯ３Ｎを含
有する硝化液１４は嫌気状態にある脱窒槽１５に入りＮ
ｏ２−Ｎ、Ｎｏ、・−Ｎ １．ｔＮ ｚに還元されろ。The nitrification liquid 14 containing NO2N and NO3N generated in the nitrification tank 12 enters the denitrification tank 15 in an anaerobic state.
o2-N, No, -N 1. Be reduced to tN z.
この脱窒槽１５にアルコール廃液５を添加して脱窒を効
率良く行なわせる。Alcohol waste liquid 5 is added to this denitrification tank 15 to efficiently perform denitrification.
又脱窒槽１５より循環液１６を硝化槽１２に戻し、硝化
槽１２で使用する苛性ソーダ量を削減するようにしてい
る。Further, the circulating fluid 16 is returned from the denitrification tank 15 to the nitrification tank 12 to reduce the amount of caustic soda used in the nitrification tank 12.
第３図に従来方法のメタノール添加の場合と本発明方法
のアルコール廃液添加の場合の時間ごとの、Ｎ Ｏｘ、
Ｎ （Ｐｌｌｌｌｌｌ（７）測定グラフを示す。Figure 3 shows the NOx,
N (Pllllllll (7) shows the measurement graph.
第３図に示す如く、脱窒剤としてア）Ｌコ・−ル廃液を
用いる本発明方法は従来方法に比べて優れていることは
明らかである。As shown in FIG. 3, it is clear that the method of the present invention using a) L-cole waste liquid as a denitrifying agent is superior to the conventional method.
〔発明の効果〕 ′
本発明の窒素含有廃水の生物学的処理方法は、従来用い
られている脱窒剤であるメタノールに代わり、アルコー
ル製造過程で発生するアルコール廃液を利用し、効率良
く生物学的脱窒処理させろことが出来るので、高価な薬
品を使用せず経済的な方法である。[Effects of the Invention] ′ The biological treatment method for nitrogen-containing wastewater of the present invention uses alcohol wastewater generated during the alcohol production process instead of methanol, which is a denitrifying agent conventionally used, and efficiently treats biological wastewater. It is an economical method that does not use expensive chemicals because it can perform targeted denitrification treatment.
第１図は、本発明を実施するための実験装置の説明図、
第２図は同じく連続実験装置の説明図、第３図は、従来
方法のメタノール添加の場合と本発明方法のアルコール
廃液添加の場合の時間ごとの、Ｎｏ）−Ｎ（ρｐｍ）の
測定グラフである。
図（こおいて、１：測定槽、２：恒温槽、３：凰拌機、
ｌ Ｎｏイ含有汚泥混合液、５： アルコール廃液、
１１： コー・クス炉ガス液、１２：硝化哨。
１３：苛性ソーダ、１４：硝化を夜、１５：脱窒槽。
１６：循環液である１、
尚、各図中の同符号は同−又は相当部分を示す。FIG. 1 is an explanatory diagram of an experimental apparatus for carrying out the present invention;
Figure 2 is an explanatory diagram of the continuous experimental equipment, and Figure 3 is a measurement graph of No) - N (ρpm) for each time in the case of methanol addition in the conventional method and in the case of alcohol waste liquid addition in the method of the present invention. be. Diagram (here, 1: measurement tank, 2: constant temperature bath, 3: stirrer,
l Noi-containing sludge mixed liquid, 5: Alcohol waste liquid,
11: Coke oven gas liquid, 12: Nitrification control. 13: Caustic soda, 14: Nitrification at night, 15: Denitrification tank. 16: Circulating fluid 1. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
脱窒する生物学的処理方法に於て、脱窒の際に水素供与
体として、アルコール廃液を使用することを特徴とする
窒素含有廃水の生物学的処理方法。Nitrification of coke oven gas liquid containing high concentration of ammonia.
A biological treatment method for nitrogen-containing wastewater, characterized in that an alcohol wastewater is used as a hydrogen donor during denitrification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61130384A JPS62286596A (en) | 1986-06-06 | 1986-06-06 | Biological treatment of nitrogen-containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61130384A JPS62286596A (en) | 1986-06-06 | 1986-06-06 | Biological treatment of nitrogen-containing waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62286596A true JPS62286596A (en) | 1987-12-12 |
Family
ID=15033040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61130384A Pending JPS62286596A (en) | 1986-06-06 | 1986-06-06 | Biological treatment of nitrogen-containing waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62286596A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014510632A (en) * | 2011-04-11 | 2014-05-01 | ティッセンクルップ・ウーデ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Method and apparatus for biological purification of coke plant wastewater |
| CN104193106A (en) * | 2014-09-16 | 2014-12-10 | 王茜茜 | Tar wastewater purification method |
-
1986
- 1986-06-06 JP JP61130384A patent/JPS62286596A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014510632A (en) * | 2011-04-11 | 2014-05-01 | ティッセンクルップ・ウーデ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Method and apparatus for biological purification of coke plant wastewater |
| CN104193106A (en) * | 2014-09-16 | 2014-12-10 | 王茜茜 | Tar wastewater purification method |
| CN104193106B (en) * | 2014-09-16 | 2016-02-03 | 王茜茜 | A kind of purifying method of tar and waste water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3531481B2 (en) | Wastewater treatment method and apparatus | |
| US6375837B1 (en) | Waste water treatment method being able to treat surface active agent, nitrogen, hydrogen peroxide and phosphor with high efficiency and equipment therefor | |
| US11820688B2 (en) | Water treatment method for simultaneous abatement of carbon, nitrogen and phosphorus, implemented in a sequencing batch moving bed biofilm reactor | |
| JP2005246135A (en) | Method for biologically removing nitrogen | |
| Lim et al. | Evaluation of pilot-scale modified A2O processes for the removal of nitrogen compounds from sewage | |
| JP2003053383A (en) | Method for removing nitrogen from waste water | |
| JP2000308900A (en) | Treatment of ammonia-containing waste water | |
| JP3656426B2 (en) | Biological treatment of ammoniacal nitrogen | |
| KR100322947B1 (en) | Method for removing nitrogen in waste water | |
| JP2007117842A (en) | Method and apparatus for removing nitrogen of high concentration organic waste water | |
| JPS585118B2 (en) | Yuukiseihaisuino | |
| JPH08141597A (en) | Apparatus for treating waste water containing nitrogen and fluorine | |
| JPS6254075B2 (en) | ||
| JPS62286596A (en) | Biological treatment of nitrogen-containing waste water | |
| JPH06178995A (en) | Anaerobic digestion treatment of organic waste water | |
| JP2005288371A (en) | Wastewater treatment method | |
| JPS6117559B2 (en) | ||
| Sabirova | Prospects for biotechnology in wastewater processing at coke plants | |
| JP2006088057A (en) | Method for treating ammonia-containing water | |
| JPH03275196A (en) | Nitrous acid type nitrifying and denitrifying treatment device | |
| JPS58150496A (en) | Process for methane fermentation of waste liquid highly contg. nitrogen | |
| JP2003094096A (en) | Method for treating organic waste, apparatus therefor, and sludge | |
| JPH1085790A (en) | Biological denitrification apparatus for drainage | |
| KR102225883B1 (en) | Partial Nitritation Methods of Sewage Using Autotrophic microorganism immobilized in Bead | |
| KR102101020B1 (en) | Nitrogen Removal Methods of Sewage Using Autotrophic microorganism immobilized in Bead |