WO2006022188A1 - 脱水助剤及びその製造方法 - Google Patents
脱水助剤及びその製造方法 Download PDFInfo
- Publication number
- WO2006022188A1 WO2006022188A1 PCT/JP2005/015073 JP2005015073W WO2006022188A1 WO 2006022188 A1 WO2006022188 A1 WO 2006022188A1 JP 2005015073 W JP2005015073 W JP 2005015073W WO 2006022188 A1 WO2006022188 A1 WO 2006022188A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wood flour
- wood
- fine
- aid according
- sludge
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/44—Materials comprising a mixture of organic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
- B01J2220/68—Superabsorbents
Definitions
- the present invention relates to a dehydration aid effective for increasing the dewatering rate when sludge in industrial wastewater or household wastewater is dehydrated, and a method for producing the same.
- wastepaper for example, low-grade wastepaper with high recycled paper use value
- color Waste paper is pulverized to a particle size of about 0.25 to about Lmm, added at a rate of 10 to 50% by mass per sludge solid content, and compressed using a belt press or screw press.
- a method of dehydrating at 30 MPa is known (see Non-Patent Documents 1 and 2).
- a belt press provided with a filter cloth that has previously been mixed with sludge by adding a flocculant and pulverized waste paper to form agglomerated sludge, and circulating this agglomerated sludge between a gravity dewatering unit and a pressure dewatering unit.
- a dehydration method that stabilizes the moisture content of the dewatered cake by controlling the amount of waste paper mixed and the running speed of the filter cloth when dewatering the water by supplying it to a water-type dewatering machine (see Patent Document 1).
- Sludge treatment method that mixes 1 to 20% by weight of sludge pulp per sludge, then concentrates (see Patent Document 2), agglomerates are mixed in the sludge and agglomerated, and the agglomerated sludge is first dehydrated and used paper Dewatering method of sludge to be mixed and dehydrated as a dehydrating aid (see Patent Document 3), adding inorganic salt flocculant to sludge generated in human waste treatment plant, dehydrating, and then adding crushed shell to dehydrated cake Adjust pH and add crushed waste paper to improve air permeability and aerobic A composting method (see Patent Document 4) in which microorganisms are propagated to decompose organic substances and absorb bad odors has been proposed.
- Patent Document 1 Japanese Patent Laid-Open No. 9-216000 (Claims and Others)
- Patent Document 2 Japanese Patent Laid-Open No. 11-19698 (Patents and Others)
- Patent Document 3 Japanese No. 2001-121199 (Claims and others)
- Patent Document 4 Japanese Patent Laid-Open No. 2001-302377 (Claims and others)
- Non-Patent Document 1 “Monthly Sewerage”, Vol. 21, No. 73, p. 85-88
- Non-Patent Document 2 Resource Environment Measures, 1988, No. 34, No. 9, p. 25-33
- one of the inventors of the present invention is a fine material having a diameter of 10 to 30 ⁇ m and a length of 500 to 1000 ⁇ m, to which mechanochemical activity has been previously imparted by mechanical shearing.
- highly active cellulose fibers made of pulp fibers As a dehydration aid (Japanese Patent Application No. 2004-56927)
- pretreatment such as deinking treatment was performed.
- it is necessary to perform mechanical shearing under controlled conditions it is inevitable that the production cost of the dewatering aid will be high. There is a drawback that becomes larger.
- the present invention has been made for the purpose of overcoming such drawbacks, providing an inexpensive dehydration aid, and reducing treatment costs required for treating a large amount of sludge and other wastewater.
- the present invention provides a mixture of (A) fine wood flour activated by mechanochemical treatment and (B) highly active cellulose fiber, or dewatered water that also has a milling power of the mixture.
- a dehydration aid characterized by adding high-activity cellulose fiber to the auxiliary agent and wood flour in a proportion not to be less than 10% based on the total mass of wood flour and high-activity cellulose fiber and subjecting to a frame treatment for at least 30 minutes.
- the manufacturing method of an agent is provided.
- the fine wood powder used as the component (A) in the dehydrating aid of the present invention may be either a coniferous or hardwood wood powder, or may be a monocotyledonous plant, i.e., bamboo powder, which has become woody, and is not particularly limited.
- the coniferous trees include cedar, ripe pine, pine pine, todomatsu, beech, baitsuga, and sitka blues. There are mizunara, zelkova, birch, red lawan, abiton, madake, houraidake, and sasa.
- the power to use these wood flours can be obtained by using wastes such as thinned wood chips, crushed wood chips, or sawdust generated during sawing. it can.
- wood flour As the component (A) of the present invention, it is necessary to use such wood flour in the form of fine wood flour that is mechanically activated by applying mechanical shearing force.
- mechanochemical is a phenomenon in which mechanical energy is absorbed into a solid substance and collapsed to form an active site to generate chemical reaction performance. This includes an increase in surface area due to collapse. It is related to the accumulation of internal energy due to the added mechanical energy.
- mechanical energy is applied by using a vibration ball mill, a rotating ball mill, a rod mill, an attrition mill, a jet mill, a micro atomizer, a high-speed force agitator, etc.
- a vibration ball mill a rotating ball mill
- a rod mill a rod mill
- an attrition mill a jet mill
- a micro atomizer a high-speed force agitator, etc.
- it is carried out by grinding it is particularly preferred to grind in a dry state using a grinder. This grinding or grinding is preferably carried out until a fine wood flour with a particle size of 1 to: LOO / zm, preferably 10 to 50 ⁇ m, is obtained, which is usually at least 30 minutes, preferably Processing time of 1 to 3 hours is required.
- Ordinary wood powder such as sawdust
- the component (A) of the present invention was mechanochemically treated until the her cam structure was destroyed. It is preferable to use one. Grinding debris generated by sanding by drum sander, belt sander, wild belt sander, etc. in the final finishing process when manufacturing plywood (plywood), and grinding generated by sandblasting in the finishing process of woodwork products
- the scrap is particularly suitable because it is a very fine powder and a strong mechanical energy is added during polishing.
- the wood flour contains hiba or cypress wood flour or bamboo powder, bactericidal and deodorizing properties are imparted, and the dehydrated processed product can be prevented from decaying and producing bad odor over a long period of time.
- the content of the hiba or hinoki during this, is sufficient 5 to 30 mass 0/0 of the total wood flour.
- the component (B) to be mixed with the component (A) highly active cellulose fibers are used.
- the cellulose fibers may be dispersed in water or in a dry state. It is manufactured by stirring or grinding until the total energy of the cellulose fiber is refined to a size of 10 to 30 ⁇ m in diameter and 500 to 1000 ⁇ m in length, with a total energy. .
- the pulp fiber used as a raw material in this case is wood pulp such as alkali wood pulp, sulfite pulp, chemical ground pulp, semi-chemical pulp, bagasse pulp, hemp pulp, bamboo, which are used as ordinary papermaking raw materials. It is preferable to use waste paper pulp from the viewpoint of effective recycling of power resources, which can be arbitrarily selected from pulp for papermaking, such as pulp, bast pulp, and straw pulp.
- used paper pulp is simply soaked in water and each fiber is disaggregated, which is previously deinked in the same way as in the case of ordinary recycled paper, and is used as a coloring pigment or extender pigment. Except for papermaking additives such as sizing agents, it is necessary to increase the purity of cellulose fibers to 97% or more, preferably 99% or more.
- This deinking treatment can be performed, for example, by calcining alkali and steaming, then separating and separating impurities from the cellulose fibers, and collecting the cellulose fibers floating in the aqueous solution.
- a dispersing agent such as a surfactant, a sulfonated oil, bentonite, or sodium metasilicate may be added.
- the mechanochemical treatment of this high-purity cellulose fiber to form a highly active cellulose fiber is performed by, for example, treating a high-purity cellulose fiber in water with a diameter of 10 to 30 ⁇ m and a long length. Trim until fine pulp fibers of 500-1000 ⁇ m And by applying mechanical energy.
- the highly active cellulose fiber obtained in this way the light emission (photon) phenomenon changes immediately after the mechanochemical treatment. By irradiating it with light, for example, ultraviolet rays, and measuring the photon emitted, You can know the degree of activity.
- the highly active cellulose fiber used in the present invention is irradiated with ultraviolet rays after mechanochemical treatment, and the luminescence phenomenon immediately after the irradiation is analyzed with a very weak luminescence measuring device. It is preferable to use a 5 times increase.
- Such a highly active cellulose fiber is commercially available, for example, under the trade name “Reserva 1” from Reserva Co., Ltd.
- the dehydrating aid of the present invention is obtained by mixing the component (B) with the component (A) in a proportion of 10% or less, preferably 40% or more based on the total mass of both. .
- This mixing can also be performed by force-mixing or shaking the ingredients (A) and (B) in a dry ratio at a predetermined ratio and uniformly dispersing them. However, it is preferable to disperse uniformly.
- Component (A) For example, waste wood powder generated when sanding a plywood board may be used alone.
- It can be milled to a fine powder of 00 m, preferably 5 to 50 m, and mechanochemically activated simultaneously with mixing.
- the highly active cellulose fiber of component (B) has a reduced activity when it is made too fine by a single treatment, so when used alone, it must be used as a fiber having a size within the above range. However, when it is refined in the state of being mixed with the component (A), since the activity does not decrease even as a fine powder mixture having a particle size of 1 to LOO ⁇ m, it can be used as a fine powder.
- the sewage sludge is 5 to 35% by mass, preferably 10 to 20% by mass based on the mass of solids therein. Add% dehydration aid and mix thoroughly. This treatment separates the solids in the sewage into sludge lumps.
- an organic polymer flocculant is added to the sewage containing the sludge sludge as an aqueous solution having a concentration of 0.1 to 0.5 mass%.
- the addition amount at this time is selected in the range of 0.1 to 20% by mass, preferably 0.5 to 10% by mass, based on the solid content mass in the sewage.
- a nonionic, cationic or amphoteric synthetic polymer flocculant is used as the organic polymer flocculant.
- non-ionic synthetic polymer flocculant examples include polyacrylamide, polyethylene oxide, and urea formalin coconut resin.
- examples of the cationic synthetic polymer flocculant include polyaminomethylacrylamide, Examples of polyvinyl imidazoline, chitosan, ionene copolymer, epoxyamine copolymer, and amphoteric synthetic polymer flocculants include, for example, lecithin amphoteric surfactants and casein degradation amphoteric surfactants. Can do.
- acryloyloxyalkyltrialkylammonium salts or methacryloyloxyalkyltrialkylammonium salts particularly preferred are homopolymers of acryloyloxyalkyltrialkylammonium salts or methacryloyloxyalkyltrialkylammonium salts, and these ammonium salts and acrylamides. And a copolymer.
- the molecular weight of these polymers or copolymers is suitably in the range of 3,000 to 100,000.
- Such synthetic polymer flocculants are commercially available, for example, as liquid polymer flocculants “E-513” and “E-555” (both made of high-money earth).
- an inorganic polymer flocculant can be used in combination as necessary.
- the inorganic polymer flocculant include poly iron sulfate (111), poly salt iron (111), poly salt aluminum, and poly sulfate aluminum. These inorganic polymer flocculants are usually used in an amount of 1.0 to 20 times, preferably 2.0 to 5.0 times the amount of the organic polymer flocculant used as an aqueous solution having a concentration of 5 to 15% by mass. It is added to sewage sludge.
- the composition of sewage sludge varies depending on the production environment and season, it is necessary to appropriately increase or decrease the amount of dehydration aid and organic polymer flocculant used within the above range according to this composition.
- the order of addition of the dehydration aid and the organic polymer flocculant is important. First, the dehydration aid is added and stirred to form sludge. Add flocculant. If this order of addition is reversed, the dehydrating effect is reduced. In order to form this sludge, it is necessary to stir vigorously for at least 1 minute, preferably 3 to 5 minutes.
- the treated material sufficiently flocked as described above is squeezed by, for example, a screw press method, a belt press method, or a pressure filtration method.
- the pressing pressure at this time is usually selected within a range of 30 to: LOOkPa, preferably about 50 kPa or more.
- a method using a pressure lower than this can be used, for example, a vacuum dehydration method, but the dehydration performance of the dehydration aid is demonstrated as the pressure increases, so use a squeezer with a press pressure as high as possible. I prefer to do it.
- the dehydration aid of the present invention is used for the treatment of various industrial waste liquids such as aquatic processing waste liquids, food waste liquids, paper waste liquids, animal manure, and the like, which can be obtained only by dewatering of sewage sludge. Can be dehydrated.
- industrial waste liquids such as aquatic processing waste liquids, food waste liquids, paper waste liquids, animal manure, and the like, which can be obtained only by dewatering of sewage sludge. Can be dehydrated.
- Corrugated waste paper strength Recycled high-purity cellulose fiber (impurity content 1 mass% or less, diameter 30-100 ⁇ m, length 2-2.5 mm) grinder (Akiki Tekko Co., Ltd., product name “wood crusher K-3000 "), and the sample 2 (diameter 25 to 35 111, length 1 to 1.5 mm) and sample 3 (diameter 10 ⁇ 13 m, length 0.8-1. Omm).
- Samples 2 and 3 thus obtained and untreated high-purity cellulose fibers (Sample 1) The chemiluminescence test was conducted as follows.
- Sample lOmg was placed in a stainless steel petri dish with a diameter of 50 mm, irradiated with LED—UV (wavelength 375 mm) for 10 seconds, and then 1 second later at room temperature in the atmosphere (24 ° C) (Tohoku Electronics Industry) The number of generated photons was measured using a registered trade name “Chemiluminescence Analyzer MLA—GOL DS” manufactured by Komatsu Ltd.
- the sewage sludge thus treated was then dehydrated for 10 minutes at a pressure of 8 kgZcm 2 using a hand squeezer, and the moisture content of the resulting dehydrated cake was measured.
- Table 2 shows the properties of the floc and the water content of the dehydrated cake obtained.
- the evaluation of the floc shape in the table has the following meaning.
- Size A Average diameter 10mm or more
- A The shape is maintained, but dents are not generated even when pressed with fingers.
- Example 2 Instead of the dehydrating aid in Example 1, 25% by weight of used paper disaggregation fiber was used. Outside, when the sewage sludge was dehydrated under the same conditions as in Example 1, the floc properties were size D, hardness D, grip feeling C, and the moisture content of the dewatered cake produced after squeezing was 81 It was 5% by mass.
- Example 1 Dewatering aid used in Example 1 (No. 5 sample) for 20 liters of dewatered drainage scum (water content: 93.3% by mass) from Shiogama Sakai Complex Fisheries Processing Industry Co., Ltd. 200g (corresponding to 11.5% by mass with respect to the solid content in the scum), and after stirring for 5 minutes at 2200rpm, the amphoteric type polymer flocculant (trade name “Paraloc” manufactured by Asada Chemical Industry Co., Ltd.) 410K101 ”) 8.7 g of 0.2% by weight aqueous solution was added, and the flocs were lifted by stirring for 3 minutes. The properties of this flock were size A, hardness B, and grip feeling B.
- the dehydration aid of the present invention can be used as a component of a dewatering aid by using wood flour that has been discarded without being used so far, the raw material cost can be reduced.
- this dewatering aid the water-containing sludge generated from various domestic and industrial wastewater can be dewatered to a water content of 65% or less. Therefore, sludge treated with this dehydrating aid Can be used as compost raw material.
- the volume is usually about one-half, so there is an advantage that the amount of treatment can be significantly reduced in the subsequent disposal of waste such as incineration and landfill. . Therefore, the dewatering aid of the present invention can be suitably used for sludge dewatering during various waste liquid treatments.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US11/661,143 US7678737B2 (en) | 2004-08-26 | 2005-08-18 | Dewatering promoter and method for production thereof |
JP2006531852A JP4189479B2 (ja) | 2004-08-26 | 2005-08-18 | 脱水助剤及びその製造方法 |
EP05772792.7A EP1810748B1 (en) | 2004-08-26 | 2005-08-18 | Dewatering promoter and method for production thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-247528 | 2004-08-26 | ||
JP2004247528 | 2004-08-26 |
Publications (1)
Publication Number | Publication Date |
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WO2006022188A1 true WO2006022188A1 (ja) | 2006-03-02 |
Family
ID=35967401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/015073 WO2006022188A1 (ja) | 2004-08-26 | 2005-08-18 | 脱水助剤及びその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7678737B2 (ja) |
EP (1) | EP1810748B1 (ja) |
JP (1) | JP4189479B2 (ja) |
KR (1) | KR100764955B1 (ja) |
CN (1) | CN100473455C (ja) |
WO (1) | WO2006022188A1 (ja) |
Cited By (5)
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JP2016112546A (ja) * | 2014-12-18 | 2016-06-23 | 王子ホールディングス株式会社 | 汚泥の脱水方法及び汚泥の脱水装置 |
JP2016112545A (ja) * | 2014-12-18 | 2016-06-23 | 王子ホールディングス株式会社 | 汚泥の脱水方法及び汚泥の脱水装置 |
WO2018207927A1 (ja) * | 2017-05-12 | 2018-11-15 | 征八郎 三浦 | 廃水の処理方法及びその廃水処理装置 |
JP2018192383A (ja) * | 2017-05-12 | 2018-12-06 | 征八朗 三浦 | パーラー廃水の処理方法及びその廃水処理装置 |
JP2019195768A (ja) * | 2018-05-09 | 2019-11-14 | 征八朗 三浦 | バイオマス消化液の処理方法及びその廃水処理装置 |
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US8061057B2 (en) * | 2007-07-03 | 2011-11-22 | Hydrocell Technologies | Waste treatment system |
US20110091953A1 (en) * | 2009-04-07 | 2011-04-21 | Enertech Environmental, Inc. | Method for converting organic material into a renewable fuel |
JP5855845B2 (ja) * | 2011-05-12 | 2016-02-09 | 水ing株式会社 | 汚泥処理剤、それを用いた汚泥処理方法、及び汚泥処理装置 |
KR20160013225A (ko) | 2016-01-12 | 2016-02-03 | 주식회사 서남환경 | 목질계 물질을 이용한 탈수보조제 |
CN110117146A (zh) * | 2019-06-11 | 2019-08-13 | 杭州更蓝生物科技有限公司 | 便于送料的污泥脱水成型装置 |
JP7260645B2 (ja) * | 2019-07-03 | 2023-04-18 | 帝人フロンティア株式会社 | 汚泥脱水剤 |
CN111468077A (zh) * | 2020-04-09 | 2020-07-31 | 中国科学院新疆生态与地理研究所 | 一种沙拐枣生物吸附剂的制备方法及其应用 |
CN113967390A (zh) * | 2021-10-27 | 2022-01-25 | 李亚龙 | 土壤改良剂的制备装置及制备方法 |
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2005
- 2005-08-18 EP EP05772792.7A patent/EP1810748B1/en active Active
- 2005-08-18 WO PCT/JP2005/015073 patent/WO2006022188A1/ja active Application Filing
- 2005-08-18 US US11/661,143 patent/US7678737B2/en active Active
- 2005-08-18 JP JP2006531852A patent/JP4189479B2/ja active Active
- 2005-08-18 KR KR1020067003069A patent/KR100764955B1/ko active IP Right Grant
- 2005-08-18 CN CNB2005800277973A patent/CN100473455C/zh active Active
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JP2003095769A (ja) * | 2001-09-20 | 2003-04-03 | Seihachiro Miura | コンポスト肥料の製造方法 |
JP2003238278A (ja) * | 2002-02-12 | 2003-08-27 | Seihachiro Miura | 下水汚泥のコンポスト化方法 |
JP2005246146A (ja) * | 2004-03-01 | 2005-09-15 | Seihachiro Miura | 水産加工排水スカムの処理方法 |
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Also Published As
Publication number | Publication date |
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EP1810748A4 (en) | 2010-09-15 |
KR100764955B1 (ko) | 2007-10-08 |
EP1810748A1 (en) | 2007-07-25 |
CN101005891A (zh) | 2007-07-25 |
US7678737B2 (en) | 2010-03-16 |
JPWO2006022188A1 (ja) | 2008-05-08 |
JP4189479B2 (ja) | 2008-12-03 |
US20080020929A1 (en) | 2008-01-24 |
KR20060039449A (ko) | 2006-05-08 |
EP1810748B1 (en) | 2013-11-20 |
CN100473455C (zh) | 2009-04-01 |
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