WO2011039831A1 - 有機物含有水の生物処理方法 - Google Patents
有機物含有水の生物処理方法 Download PDFInfo
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- WO2011039831A1 WO2011039831A1 PCT/JP2009/066903 JP2009066903W WO2011039831A1 WO 2011039831 A1 WO2011039831 A1 WO 2011039831A1 JP 2009066903 W JP2009066903 W JP 2009066903W WO 2011039831 A1 WO2011039831 A1 WO 2011039831A1
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- biological treatment
- containing water
- phenolic resin
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
- C02F3/1273—Submerged membrane bioreactors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/20—Prevention of biofouling
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
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- 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
Definitions
- the present invention relates to a biological treatment method for treating organic substance-containing water by an activated sludge method, and more particularly to a biological treatment method for obtaining treated water by directly separating a biological treatment liquid into a membrane.
- microorganisms contained in the activated sludge mixed solution and mucilage produced by the microorganisms tend to adhere to the membrane surface and cause clogging.
- the activated sludge concentration (Mixed Liquir Suspended Solid) in the biological treatment tank is kept low (for example, 10,000 mg / L or less), and expressed as BOD (biochemical oxygen consumption) for the sludge retained in the biological treatment tank. Measures to reduce the sludge load to about 0.1 kg-BOD / kg-MLVSS / day may be taken, but reducing the activated sludge concentration lowers the biological treatment efficiency.
- the permeation flux of the membrane is about 0.5 m / day in the case of a submerged membrane, and 0.7 m / day even if it is high. Degree.
- Patent Document 1 In order to prevent a decrease in the permeation flux of the membrane due to a biological metabolite or the like in such a membrane separation activated sludge method, in Patent Document 1, a polymer flocculant is added to the tank, and in Patent Document 2, an inorganic or organic material is added. A system flocculant is added, and in Patent Document 3, a cationic polymer, an amphoteric polymer or a zwitterionic polymer is added.
- Patent Document 4 JP-A-8-332483 JP 2005-74345 A JP 2006-334877 A JP 2008-200509A
- An object of the present invention is to provide a biological treatment method for organic matter-containing water that can more effectively suppress the decrease in the permeation flux of the membrane in the membrane separation activated sludge method than in the conventional method.
- the biological treatment method for organic matter-containing water according to the first aspect is the biological treatment of organic matter-containing water in which raw water composed of organic matter-containing water is introduced into a biological treatment tank and mixed with activated sludge for biological treatment, and the biological treatment liquid is subjected to membrane separation.
- an iron salt and a phenol resin are added to raw water or the biological treatment tank.
- the addition amount of iron salt in terms of Fe is 0.2 to 1.0 times the BOD amount flowing into the biological treatment tank. It is a feature.
- the biological treatment method for organic substance-containing water according to the third aspect is characterized in that, in the first or second aspect, the addition amount of the phenolic resin is 1 to 500 mg / L with respect to the raw water.
- the biological treatment method for organic substance-containing water according to the fourth aspect is characterized in that, in any one of the first to third aspects, the molecular weight of the phenolic resin is 1,000 to 100,000.
- the addition amount of the phenolic resin is 0.1 to 5.0 times the Fe equivalent addition amount of the iron salt. It is characterized by being.
- the biological treatment method for organic substance-containing water according to the sixth aspect is characterized in that, in any one of the first to fifth aspects, the phenolic resin is dissolved in an alkaline agent and added.
- the biological treatment method for organic substance-containing water of the seventh aspect is characterized in that, in the sixth aspect, the phenolic resin is added as an alkaline aqueous solution having an alkali agent concentration of 1 to 25% by weight and a phenolic resin concentration of 1 to 50% by weight. It is what.
- the biological treatment method for organic substance-containing water according to the eighth aspect is characterized in that, in any one of the first to seventh aspects, the load on the biological treatment tank is 0.5 to 5.0 kg-BOD / m 3 / day. To do.
- the biological treatment method for organic substance-containing water according to the ninth aspect is characterized in that in any one of the first to eighth aspects, the biological treatment liquid is directly subjected to membrane separation.
- the organic substance-containing water is biologically treated with activated sludge in the biological treatment tank, and is solid-liquid separated by a membrane to become treated water.
- membrane is prevented by adding an iron salt and a phenol-type resin to raw
- the iron salt and the phenolic resin are used in combination, the decrease in the permeation flux of the membrane can be sufficiently suppressed even when the iron salt addition amount is reduced compared to the case where only the iron salt is added. it can. Moreover, the production amount of iron hydroxide sludge decreases by reducing the addition amount of iron salt.
- the required addition amount of the iron salt can be reduced, and the filterability of the membrane can be further effectively improved. Efficient processing can be performed while suppressing this.
- raw water composed of organic matter-containing water is introduced into a biological treatment tank, biologically treated with activated sludge, and when this biologically treated water is subjected to membrane separation treatment, the raw water or biological treatment tank is mixed with an iron salt and a phenolic resin.
- iron salt and phenolic resin may be added to both raw water and biological treatment tank, iron salt is added to either raw water or biological treatment tank, and phenolic resin is added to the other. May be.
- the organic substance-containing water to be treated in the present invention is not particularly limited, but the present invention treats natural water such as ground water, river water, lake (including dam lake) water, tap water, or waste water.
- the recovered water obtained in this manner can be treated as raw water, and the treated water obtained can be suitably used for the production of pure water.
- the raw water may contain one or both of high-concentration humic substances and urea exceeding 1 mg / L, and SS is also 0.1 to It may be contained in the range of about 30 mg / L.
- the biological treatment tank for biologically treating such organic substance-containing water may be any of an aeration tank for removing BOD, a nitrification tank mainly for nitrification, a denitrification tank mainly for denitrification, and the like.
- the activated sludge is sludge mainly composed of aerobic bacteria that decompose BOD (hereinafter referred to as “BOD sludge”), sludge mainly composed of nitrifying bacteria that oxidize ammonia (hereinafter referred to as “nitrified sludge”). Any of sludge mainly composed of denitrifying bacteria that reduce nitric acid or nitrous acid (hereinafter, particularly referred to as “denitrifying sludge”) may be used.
- the biological treatment efficiency can be increased by setting the MLSS concentration in the biological treatment tank to a high concentration of 2,000 to 50,000 mg / L, particularly 5,000 to 20,000 mg / L.
- the ratio of the amount of organic matter in the MLSS specifically, the activated sludge organic suspended solid MLVSS (Mixed Liquir Volatile Suspended Solids) / MLSS ratio is about 0.1 to 0.9, especially 0.2 to 0.7. It is better to be in the range.
- the organic substance concentration of organic substance-containing water introduced into the biological treatment tank is extremely low (for example, when the concentration is less than about 100 ng / L, AOC (Associable Organic Carbon) which is a biodegradable organic substance)
- the activated sludge grows less and the MLVSS / MLSS ratio is outside the above range. In such a case, a small amount of organic substance may be added to the biological treatment tank, or other organic substance-containing water having a high organic substance concentration may be mixed.
- the carrier may be suspended in the biological treatment tank.
- floating carriers include sponges and gels.
- the BOD load of the biological treatment tank is preferably about 0.5 to 5.0 kg-BOD / day, particularly preferably about 0.5 to 2.0 kg-BOD / day.
- iron salt and phenolic system are added to the raw water or the biological treatment tank. Add resin.
- the iron salt is not particularly limited, and iron salts such as ferric chloride, ferrous chloride, and ferric sulfate can be used. These may be used alone or in combination of two or more.
- the iron salt is preferably added as an aqueous solution of about 0.5 to 5.0% by weight.
- the amount of iron salt added is preferably 0.2 to 1.0 times, particularly 0.2 to 0.5 times the weight ratio in terms of Fe with respect to the inflow BOD, depending on the quality of the raw water.
- the amount added to the raw water is preferably about 0.1 to 200 mg-Fe / L.
- the phenolic resin added to the raw water or biological treatment tank is a condensation product of phenols such as monohydric phenol such as phenol, cresol, xylenol and aldehyde such as formaldehyde or a modified product thereof, and is cured by crosslinking.
- phenols such as monohydric phenol such as phenol, cresol, xylenol and aldehyde such as formaldehyde or a modified product thereof, and is cured by crosslinking.
- the previous phenolic resin is mentioned. Specific examples include the following.
- phenolic resins may be novolak type, resol type, or a mixture of both. Which phenolic resin is used is selected and used more effectively depending on the type of raw water.
- the novolac type phenolic resin and the resol type phenolic resin those represented by the following general formulas (I) and (II) are preferable, and the molecular weight thereof is 1,000 to 100,000, particularly 1,000. It is preferably from 50,000 to 50,000. That is, in the case of a novolak type phenol resin represented by the following general formula (I), n is 1 to 500 and m is 1 to 500, and in the case of a resol type phenol resin represented by the following general formula (II): It is preferable that r is 10 to 500. If the molecular weight of the phenolic resin is too large, the membrane may be clogged, and if it is too small, the membrane may leak from the membrane.
- phenolic resin Since such a phenolic resin is hardly soluble in water, it is preferably used as a solution or an emulsion by dissolving or dispersing in a solvent that can be dissolved in water.
- Solvents used include ketones such as acetone, esters such as methyl acetate, water-soluble organic solvents such as alcohols such as methanol, alkaline aqueous solutions, amines, etc., preferably caustic soda (NaOH) and caustic potash (KOH). It is used by dissolving in an alkaline agent such as
- the alkaline aqueous solution has an alkali agent concentration of 1 to 25% by weight and a phenolic resin concentration of 1 to 50% by weight.
- the phenolic resin concentration is high, the phenolic resin may be dissolved by heating to about 70 to 80 ° C.
- the amount of the phenolic resin added to the raw water or biological treatment tank varies depending on the quality of the raw water, but is preferably 1 to 500 mg / L, particularly 5 to 100 mg / L.
- the addition of the phenolic resin is preferably 0.1 to 2.0 times, particularly preferably 0.1 to 1.0 times by weight with respect to the inflow BOD. Further, it is preferably 0.1 to 2.0 times by weight, particularly preferably 0.2 to 1.0 times by weight with respect to the addition amount of iron salt in terms of Fe.
- the liquid in the biological treatment tank (that is, the mixed liquid) containing activated sludge, to which iron salt and phenolic resin are added, has a pH of 4.5 to 6.5, particularly 5.0 to 6. .5 is preferable.
- acid or alkali such as hydrochloric acid may be used.
- pH adjustment may be performed without adding acid or alkali separately. May be.
- the alkali it is preferable to use a soda-based alkali such as caustic soda rather than slaked lime in order to prevent generation of scale.
- the separation membrane may be any of MF (microfiltration) membrane, UF (ultrafiltration) membrane, NF (nanofiltration) membrane, and the like.
- the form of the membrane may be any of a flat membrane, a tubular membrane, a hollow fiber and the like.
- Examples of the material of the film include, but are not limited to, PVDF (polyvinylidene fluoride), PE (polyethylene), PP (polypropylene), and the like.
- the separation membrane may be disposed so as to be immersed in the biological treatment tank, or may be installed as a pressurized membrane separation device that is separate from the biological treatment tank. However, the immersion film is preferable because the floc is less likely to be destroyed.
- Part of the solid content (separated sludge) separated from the liquid by membrane separation is returned to the biological treatment tank as a return sludge if necessary, and the sludge residence time in the biological treatment tank is about 2 to 50 days. It is preferable to extract the sludge so as to be about 5 to 20 days.
- the extracted sludge may be discharged as surplus sludge or may be reduced in volume by a volume reduction means such as an ozone reaction tank or a digestion tank.
- FIG. 1 is a flowchart showing an example of a biological treatment apparatus (hereinafter simply referred to as “treatment apparatus”) of organic matter-containing water used in the present invention.
- Raw water is introduced into the biological treatment tank 1, mixed with activated sludge, and biologically treated. Aeration is performed by air from the air diffuser 2 provided at the bottom of the biological treatment tank 1.
- an aqueous solution of iron salt is added from the iron salt adding means 3, and an phenolic resin, preferably an alkaline aqueous solution of phenolic resin, is added from the phenolic resin adding means 4. Further, a pH adjusting agent such as acid or alkali is added from the adding means 6 so that the pH detected by the pH meter 5 falls within a predetermined range. Iron salts and phenolic resins may be added to the raw water.
- the biologically treated water passes through the separation membrane 7 and is taken out as treated water. In FIG. 1, the permeated water is taken out by the pump 8, but the permeated water may be taken out by gravity.
- Surplus sludge in the biological treatment tank 1 is taken out by the take-out pipe 9. A part of the extracted sludge may be solubilized with ozone or the like and then returned to the biological treatment tank 1.
- the separation membrane 7 is immersed in the biological treatment tank 1, but as shown in FIG. 2, the biological treatment water in the biological treatment tank 1 is supplied to the pressurized membrane separation apparatus 11 by the pump 10 and permeated. Water may be taken out as treated water, and a part (or all) of the concentrated water may be returned to the biological treatment tank 1.
- Examples of the type of membrane used in the membrane separation device 11 include MF membranes and UF membranes, and examples of the membrane module format include spiral membranes other than hollow fiber membranes and flat membranes, but are not limited thereto.
- a part of the concentrated water may be guided to the sludge solubilization tank and solubilized with ozone or the like, and then returned to the biological treatment tank 1.
- the present invention is a biological treatment method for organic matter-containing water in which a biological treatment liquid is directly separated into solid and liquid by membrane separation, and in particular, an organic substance for membrane separation of a biological treatment liquid by a submerged membrane module immersed in a biological treatment tank.
- a biological treatment liquid is directly separated into solid and liquid by membrane separation, and in particular, an organic substance for membrane separation of a biological treatment liquid by a submerged membrane module immersed in a biological treatment tank.
- the raw water used in the following examples and comparative examples is organic wastewater having a BOD concentration of 50 mg / L.
- an apparatus provided with an immersion type separation membrane shown in FIG. 1 was used as the apparatus.
- the volume of the biological treatment tank is 0.5 m 3 .
- this immersion type separation membrane three hollow fiber MF membranes (manufactured by Mitsubishi Rayon Co., Ltd., pore size 0.4 ⁇ m) of 3 m 2 / piece were used. For convenience of explanation, a comparative example is given first.
- Comparative Example 2 The biological treatment tank in which the treated water can no longer be drawn out in Comparative Example 1 is emptied, and activated sludge is added to the biological treatment tank so as to have an MLSS concentration of 5000 mg / L. An aqueous iron solution was added at a rate of 1000 mg-Fe / L in terms of Fe. Further, a pH meter was provided in the biological treatment tank, pH was adjusted with sodium hydroxide, and the pH was maintained at 5.5. Then, the organic wastewater to be treated in Comparative Example 1 is supplied to the biological treatment tank at a flow rate of 10 m 3 / day, and ferric chloride is 25 mg-Fe / L with respect to the inflow water amount (FeD with respect to the BOD load).
- the increase in the differential pressure of the submerged separation membrane is reduced after 3 days from the start of water flow, and the stable operation is performed at a permeation flux of 1.0 m / day for one month. I was able to.
- the increase in differential pressure after one month was 20 kPa.
- the TOC concentration of the treated water at this time was 2.3 mg / L, and the properties of the mixed solution in the biological treatment tank were as follows. MLSS concentration: 6500 mg / L (Fe content is 35% by weight of MLSS) MLVSS concentration: 3000 mg / L pH; 5.5
- the phenol resin was added as an alkaline aqueous solution having a phenol resin concentration of 0.1% by weight and an NaOH concentration of 10% by weight.
- the increase in the differential pressure of the submerged separation membrane was almost eliminated, and stable operation was possible for one month at a permeation flux of 1.0 m / day.
- the increase in differential pressure after 1 month was 15 kPa.
- the properties of the mixed solution in the biological treatment tank were as follows. MLSS concentration: 7200 mg / L (Fe content is 31% by weight of MLSS) MLVSS concentration: 2800 mg / L pH; 5.5
- the permeation performance of the membrane can be maintained well over a long period of time even if the amount of iron salt added is reduced.
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Abstract
Description
ii) クレゾールとホルムアルデヒドとの縮合物
iii) キシレノールとホルムアルデヒドとの縮合物
iv) 上記i)~iii)のフェノール系樹脂をアルキル化して得られるアルキル変性フェノール系樹脂
説明の便宜上、まず比較例を挙げる。
原水流量を10m3/dayとし、BOD負荷を1.0kg-BOD/m3/dayとし、浸漬型分離膜に接続した処理水管の途中に設けた真空ポンプにより減圧することで、処理水管から処理水(透過水)を取出した。
その結果、実験開始から3日間で膜が目詰まりして処理水の引き抜きができなくなった。この時点での処理水のTOC濃度は3.5mg/Lであり、槽内の混合液の性状は以下の通りであった。
MLSS濃度 ;7000mg/L(Fe含有割合はMLSSの4.7重量%)
MLVSS濃度 ;4900mg/L
pH ;6.8
比較例1で処理水が引き抜けなくなった生物処理槽を空にして、生物処理槽に活性汚泥をMLSS濃度5000mg/Lとなるように添加し、この混合液に0.5重量%塩化第二鉄水溶液をFe換算で1000mg-Fe/Lの割合で添加した。また、生物処理槽にpH計を設けて水酸化ナトリウムによりpH調整を行い、pH5.5に維持した。そして、比較例1で処理対象とした有機排水を、10m3/dayの流量で生物処理槽に供給し、塩化第二鉄を流入水量に対して25mg-Fe/L(BOD負荷に対してFeとして0.5重量倍)の割合で生物処理槽に添加したところ、通水開始3日後から浸漬型分離膜の差圧上昇が小さくなり、1ヶ月間透過流束1.0m/dayで安定運転ができた。一ヵ月後の差圧上昇は20kPaであった。この時点での処理水のTOC濃度は2.3mg/Lであり、生物処理槽内の混合液の性状は以下の通りであった。
MLSS濃度 ;6500mg/L(Fe含有割合はMLSSの35重量%)
MLVSS濃度 ;3000mg/L
pH ;5.5
比較例2に引き続いて、流入水量に対して0.5重量%塩化第二鉄水溶液を10mg-Fe/L、レゾール型フェノール樹脂(群栄化学工業製、分子量8000、前記一般式(II)においてr=80)25mg/Lを生物処理槽に添加した。なお、フェノール樹脂は、フェノール樹脂濃度0.1重量%、NaOH濃度10重量%のアルカリ性水溶液として添加した。
その結果、浸漬型分離膜の差圧上昇はほぼなくなり、透過流束1.0m/dayで一ヶ月間安定して運転することができた。
1ヵ月後の差圧上昇は15kPaであった。生物処理槽内の混合液の性状は以下の通りであった。
MLSS濃度 ;7200mg/L(Fe含有割合はMLSSの31重量%)
MLVSS濃度 ;2800mg/L
pH ;5.5
なお、本出願は、2008年6月17日付で出願された日本特許出願(特願2008-158107)に基づいており、その全体が引用により援用される。
Claims (13)
- 有機物含有水よりなる原水を生物処理槽に導入して活性汚泥と混合して生物処理し、生物処理液を膜分離する有機物含有水の生物処理方法において、
原水又は該生物処理槽に、鉄塩とフェノール系樹脂とを添加することを特徴とする有機物含有水の生物処理方法。 - 請求項1において、鉄塩のFe換算の添加量が、生物処理槽に流入するBOD量の0.2~1.0重量倍であることを特徴とする有機物含有水の生物処理方法。
- 請求項1又は2において、フェノール系樹脂の添加量が、原水に対して1~500mg/Lであることを特徴とする有機物含有水の生物処理方法。
- 請求項1ないし3のいずれか1項において、フェノール系樹脂の分子量が1,000~100,000であることを特徴とする有機物含有水の生物処理方法。
- 請求項1ないし4のいずれか1項において、フェノール系樹脂の添加量が、鉄塩のFe換算添加量の0.1~5.0重量倍であることを特徴とする有機物含有水の生物処理方法。
- 請求項1ないし5のいずれか1項において、フェノール系樹脂をアルカリ剤に溶解して添加することを特徴とする有機物含有水の生物処理方法。
- 請求項6において、フェノール系樹脂を、アルカリ剤濃度1~25重量%、フェノール系樹脂濃度1~50重量%のアルカリ性水溶液として添加することを特徴とする有機物含有水の生物処理方法。
- 請求項1ないし7のいずれか1項において、鉄塩は塩化第二鉄、塩化第一鉄、及びポリ硫酸第二鉄よりなる群から選ばれた少なくとも1種であることを特徴とする有機物含有水の生物処理方法。
- 請求項1ないし8のいずれか1項において、フェノール樹脂は、
フェノールとホルムアルデヒドとの縮合物、
フェノールとホルムアルデヒドとの縮合物をアルキル変性した樹脂、
クレゾールとホルムアルデヒドとの縮合物、
クレゾールとホルムアルデヒドとの縮合物をアルキル変性した樹脂、
キシレノールとホルムアルデヒドとの縮合物、及び
キシレノールとホルムアルデヒドとの縮合物をアルキル変性した樹脂
よりなる群から選ばれた少なくとも1種であることを特徴とする有機物含有水の生物処理方法。 - 請求項1ないし11のいずれか1項において、生物処理槽の負荷が0.5~5.0kg-BOD/m3/dayであることを特徴とする有機物含有水の生物処理方法。
- 請求項1ないし12のいずれか1項において、生物処理液を直接膜分離することを特徴とする有機物含有水の生物処理方法。
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PCT/JP2009/066903 WO2011039831A1 (ja) | 2009-09-29 | 2009-09-29 | 有機物含有水の生物処理方法 |
US13/393,274 US20120152837A1 (en) | 2009-09-29 | 2009-09-29 | Biological treatment method of organic-matter-containing water |
CN2009801615119A CN102510839A (zh) | 2009-09-29 | 2009-09-29 | 含有机物的水的生物处理方法 |
KR20127005501A KR20120088659A (ko) | 2009-09-29 | 2009-09-29 | 유기물 함유수의 생물 처리 방법 |
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CN102718379A (zh) * | 2012-07-14 | 2012-10-10 | 哈尔滨工业大学 | 铁基活性污泥的制取及再生方法、再生铁基活性污泥处理低浓度重金属污水方法 |
CN102718312A (zh) * | 2012-07-14 | 2012-10-10 | 哈尔滨工业大学 | 铁基活性污泥的制取及再生方法、再生铁基活性污泥处理生活污水的方法 |
FR2989078A1 (fr) * | 2012-04-04 | 2013-10-11 | Ondeo Ind Solutions | Procede et installation de traitement d'effluents a pollution biodegradable |
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CN104817222B (zh) * | 2014-01-31 | 2019-09-17 | 三菱化学株式会社 | 废水处理方法以及废水处理装置 |
CN104817166B (zh) * | 2014-01-31 | 2020-07-31 | 三菱化学株式会社 | 废水处理方法以及废水处理装置 |
WO2017089330A1 (en) * | 2015-11-27 | 2017-06-01 | Kemira Oyj | Improve phosphorus precipitation and membrane flux in membrane bioreactors |
CA3071923A1 (en) * | 2017-08-11 | 2019-02-14 | Ovivo Inc. | Submerged membrane unit diffuser case |
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JP2003170185A (ja) * | 2001-12-11 | 2003-06-17 | Takane Kitao | ろ過装置を備えた浄化槽及びろ材による被処理水の浄化方法 |
JP2008200639A (ja) * | 2007-02-22 | 2008-09-04 | Kurita Water Ind Ltd | 有機物含有水の生物処理方法 |
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JP4577122B2 (ja) * | 2005-06-30 | 2010-11-10 | 栗田工業株式会社 | 生物処理水の高度処理方法及び生物処理水用凝集促進剤 |
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- 2009-09-29 CN CN2009801615119A patent/CN102510839A/zh active Pending
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JP2003170185A (ja) * | 2001-12-11 | 2003-06-17 | Takane Kitao | ろ過装置を備えた浄化槽及びろ材による被処理水の浄化方法 |
JP2008200639A (ja) * | 2007-02-22 | 2008-09-04 | Kurita Water Ind Ltd | 有機物含有水の生物処理方法 |
Cited By (3)
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FR2989078A1 (fr) * | 2012-04-04 | 2013-10-11 | Ondeo Ind Solutions | Procede et installation de traitement d'effluents a pollution biodegradable |
CN102718379A (zh) * | 2012-07-14 | 2012-10-10 | 哈尔滨工业大学 | 铁基活性污泥的制取及再生方法、再生铁基活性污泥处理低浓度重金属污水方法 |
CN102718312A (zh) * | 2012-07-14 | 2012-10-10 | 哈尔滨工业大学 | 铁基活性污泥的制取及再生方法、再生铁基活性污泥处理生活污水的方法 |
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