WO2005080274A1 - 水質浄化材 - Google Patents
水質浄化材 Download PDFInfo
- Publication number
- WO2005080274A1 WO2005080274A1 PCT/JP2005/002623 JP2005002623W WO2005080274A1 WO 2005080274 A1 WO2005080274 A1 WO 2005080274A1 JP 2005002623 W JP2005002623 W JP 2005002623W WO 2005080274 A1 WO2005080274 A1 WO 2005080274A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- soil
- water
- purification material
- water purification
- purification
- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
Definitions
- the present invention relates to a water purification material and a water purification material for wastewater such as environmental water and domestic wastewater, industrial wastewater, human waste, livestock wastewater, and their treated water, such as rivers and lakes containing phosphorus and organic substances. Purification of water using water treatment method.
- Kanuma soil and Akadama soil are collected as aggregated soil and used for agriculture and horticulture. Some of the fine-powder soil generated when collecting the aggregated soil is granulated into aggregates and used for horticulture, etc. It is currently being buried back in mines and used effectively.
- black soil, red soil, and limonite have the necessary adsorption performance as a water purification material, but they are not effectively used because they are powdery and have low water permeability. It is.
- muddy soil or aggregated soil that also becomes waste soil power is used as a greenery sill material such as a slope greening base material, a filling material for vegetation soil, a cultivation material for raising seedlings, a horticultural soil, or a topsoil for a field.
- a greenery sill material such as a slope greening base material, a filling material for vegetation soil, a cultivation material for raising seedlings, a horticultural soil, or a topsoil for a field.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-34739
- Non-Patent Document 1 “Water Quality Environmental Engineering-Sewage Treatment, Disposal, Reuse-” Gihodo Publishing Co., Ltd.
- water purification methods using an adsorbent such as activated charcoal and iron are generally used as water purification methods for environmental water, wastewater, wastewater, and the like containing phosphorus and organic substances.
- an adsorbent such as activated charcoal and iron
- the adsorption capacity of the adsorbent has reached its limit, it is regenerated and used by heating, washing, etc.
- Non-patent document 2 "Re-evaluation of soil infiltration water purification system” Reconstruction 1.Evaluation of soil adsorption ability to humic substances and phosphorus "The 58th Annual Meeting of Japan Society of Civil Engineers, 615-616 (2003) Fujikawa , Hamasaki and others,
- Non-Patent Document 3 "Re-evaluation of Soil Infiltration Water Purification System” Reconstruction 2. Mechanism of Removal of Pollutants from Infiltration Hydropalla, 58th Annual Meeting of Japan Society of Civil Engineers, 617-618 (2003) Fujikawa, Hamasaki et al.
- Kanuma soil and Akadama soil are aggregated and used as agricultural or horticultural soil, and that they are used as water purification materials. Most of the fine powdery soil that will be generated later is not used and is disposed of or buried back in the original quarry, and is effectively used.
- the water purification method using an adsorbent such as activated carbon has a large economic burden due to the high price of the activated carbon zeolite, and an expensive adsorbent has a large cost.
- Regeneration often takes place at the stage when the adsorption capacity reaches its limit, and such regeneration requires an extra regeneration unit, and the adsorbent of the regenerated adsorbent has a higher adsorption performance than the initial one.
- the present invention utilizes Kanuma soil, Akadama soil, Black soil, Red soil or limonite, etc., which can be used as a water purification material, and fine-grained powdery soil generated after (at) the time of their collection. Then, the first task is to make it possible to perform water quality purification of environmental water and wastewater (wastewater) containing phosphorus and organic substances at low cost, and to eliminate elution of organic substances. Make it an issue.
- the present invention first provides, as a purifying material, one of nutrients such as iron, arophen, imogolite, aluminum minerals such as gibbsite, and manganese minerals. It is suitable for removing phosphorus, while it is necessary to dissolve a small amount of organic substances.Therefore, soils that have a lot of these minerals and little dissolution of organic substances, such as the above-mentioned Kanuma soil, Akadama soil, and black It adopted volcanic soil such as waste soil, red soil, and limonite.
- the Kanuma soil, the Akadama soil, and the like are collected in aggregated form and used as a purification material.
- the fine powdery soil as it is is difficult to use as an adsorbent because the filling force of the purification material flows out into the purification film and clogging of the purification film occurs. Furthermore, if it remains in the form of fine powder, it will not be effectively used while retaining the ability to adsorb pollutants (phosphorus and organic substances) as a material.
- the porosity at the time of filling the purification material is increased by performing the agglomeration, and water permeability is ensured.
- the internal voids are enriched, and pollutants are adsorbed and held on the surfaces of the voids, so that the performance of the purification material is maintained for a long time.
- the crystal structure of iron and the state of the surface change, and the ability as an adsorbent is improved.
- the physical strength of the purification material is improved, it is less likely to disintegrate due to water flow, the water permeability is ensured and the structure is hardly clogged, and long-term use is possible.
- the heating temperature may be appropriately determined based on the experimental results, depending on the function of the purifying material, the application, the degree of removal of organic substances, and the like.For example, 400 ° C or more, preferably more than 400 ° C, and about 400 ° C In this case, the contained organic matter is sufficiently burned. At 900 ° C or higher, no improvement in adsorption capacity is recognized despite heating costs.
- the particle size of the granulated soil is related to the flow rate of the water to be purified, and may be appropriately set based on the relationship. For example, a large processing area of the purification material cannot be secured. When a large throughput is required, the throughput is secured by increasing the particle size, and when more careful processing, that is, when the flow rate is reduced to improve the removal effect (purification efficiency), For this reason, the grain size of the granulated soil is, for example, 2 mm or more, preferably 4 mm to 100 mm, for example, about 20 mm, and has the same function when filling the treatment tank. In this layer, a purifying material with a uniform diameter is used.
- it may be powdery soil, and further, such as the above-mentioned Kanuma soil, Akadama soil, black soil, red soil, limonite or other limonite, ore minerals such as alofen and imogolite.
- one of the soils abundant in secondary minerals, such as gibbsite, or any of a plurality of such soils may be granulated, if necessary, and then heated.
- Such a water purification material can be obtained.
- fine powdery or powdery soil can be mixed.
- Granulation can also be performed after the above-mentioned heating, including fine powder.
- soil having a sufficient particle size can be made into a water purification material only by the above-mentioned heating without granulation.
- the present invention uses as a water purification material by aggregating and heating fine powdery soil generated after collecting Kanuma soil or the like rich in aluminum minerals such as gibbsite suitable for phosphorus removal. Because it is obtained, it can be used effectively, as opposed to being backfilled without being used effectively in the past.
- FIG. 1 is a diagram showing a relationship between a heating temperature and a solid-liquid adsorption partition coefficient Kd of fulvic acid.
- FIG. 2 Cross-sectional view of the embodiment
- FIG. 3 is a sectional view of another embodiment.
- Embodiments of the present invention include soils rich in iron oxide minerals such as limonite such as Kanuma soil, Akadama soil, Kurobata soil, Akabota soil or limonite, and secondary minerals such as alofen, imogolite and gibbsite.
- limonite such as Kanuma soil, Akadama soil, Kurobata soil, Akabota soil or limonite
- secondary minerals such as alofen, imogolite and gibbsite.
- the above-mentioned aggregated product of the soil can be added to the finely powdered or powdery soil for granulation.
- fine water or powdery soil can be granulated with a granulating device by adjusting the water content, but when granulation cannot be performed only by water adjustment, the binder is used as a binder.
- inorganic substances are preferred.
- bentonite is added in an amount of 0.1 to 13% (% by weight). The present invention is not limited to this granulation method.
- the fine powder of Kanuma soil, Akadama soil, Black soil, Red soil or limonite is adjusted to a desired water content by replenishing water, and then granulated into aggregated pellets by a granulator, and heated at a heating temperature. By heating at about 400 ° C to 900 ° C, aggregated purification material is obtained. If granulation is difficult, mix the binder with 0.1 to 3% by weight to granulate and improve the water resistance by increasing the strength after heating.
- As the granulator an extrusion granulator, a rolling granulator or the like is used.
- the granulated and heated aggregated purification material "a" is divided into a lower crushed stone layer 1 and an upper It is installed between the crushed stone layers 2, and the water to be purified is sprayed from the water supply pipe 3, and the purified water passing through the layer of the purification material a is discharged from the discharge pipe 4.
- the jani-dori layer may be made of Kanuma-do, Akadama-dori, black-bottom-soil, red-bottom-soil or limonite alone, or a mixture of other jani-dori materials.
- the water is supplied from the upper part and the water is discharged from the lower part.
- an upward flow method in which the water is supplied from the lower part and the water is discharged from the upper part may be used.
- Examples of the water to be purified include environmental water such as rivers and lakes containing phosphorus and organic substances, and domestic wastewater.
- wastewater such as industrial wastewater, night soil, livestock wastewater, and their treated water can be purified.
- the speed of purification depends on the thickness of the purification material layer, the concentration of the purification target contained in the water to be purified, the removal rate of the purification target required after purification, and the like.
- the thickness of the purification material layer is about lm
- the flow velocity is generally about 1-2 mZ days, but the purification rate varies depending on the purpose of use, and is appropriately set by experiments and the like.
- the purification material a was irradiated with ultrasonic waves in water for 30 seconds, and the dispersion state of the material was visually evaluated.
- a test was conducted in which the temperature and time were changed as heating conditions, and a water resistance test was performed depending on whether or not a binder was used. The results are shown in Table 1.
- Table 2 shows the composition of the Akadama soil and Kanuma soil used.
- the adsorption performance due to the difference in the heating conditions was measured using humic fulvic acid, which is hardly decomposable.
- the measurement was carried out in a dark place at room temperature of 25 ° C.
- the cleaning material a: 1 was brought into contact with river water: 25 (% by weight: 3.85), and the liquid phase was converted to fulvic acid with an organic carbon concentration.
- the dissolved organic carbon concentration was measured after 1, 24, 72, and 168 hours using a soluble organic carbon measuring apparatus.
- the added fulvic acid was used as an impurity contained in commercially available humic acid as an impurity.
- FIG. 1 shows the measurement results of the solid-liquid adsorption partition coefficient Kd of the sample heated with calo and the sample not heated with C.
- the purification material a which was made of Akadama soil or Kanuma soil, showed high adsorption capacity without heating, but decreased at 200 ° C and 400 ° C, and increased when heated at 600 ° C. Was equivalent to no heating.
- the high adsorbing ability of the purification material a made of Akadama clay and Kanuma clay is due to the fact that Akadama clay contains a large amount of highly active minerals including iron, manganese and aluminum.
- an embodiment in which the purification material a was installed between the lower crushed stone layer 1 and the upper crushed stone layer 2 was configured in an acrylic column having a diameter of 5 cm.
- the water used for the test was collected from the Hayama River flowing into Lake Biwa and filtered using glass fiber filter paper (pore diameter 0.7 m).
- Phosphoric acid total phosphorus, TP: 20 mg / L was input to the water in a stepwise manner, and the TP of the filtered water was measured to determine the removal rate after passing water.
- Granulated and heated fine-grained powdery soil produced as a by-product of aggregated Akadama soil and Kanuma soil, granulated and heated heated Akadama soil, heated Kanuma soil and surface water sludge generated from a water purification plant for comparison.
- an acrylic column was used in the same manner as in Experimental Example 1, and instead of phosphoric acid, fulvic acid containing a known carbon was input in steps, and the DOC of the filtered water was measured to remove fulvic acid. The rate was determined.
- the removal rate was 90% for the heated Akamatama soil with a heating temperature of 600 ° C and 90% for the Kanuma soil with the same heating temperature of 600 ° C, whereas the heating surface water sludge used for comparison was 90%.
- the removal rate was 85%.
- this type of purifying material a is used after being filled in a processing tank.
- the packed layer of the purifying material a is in a compacted state due to the upper load of the upper part of the processing tank and its own weight. Above the critical load, the aggregate structure is broken, causing consolidation settlement.
- the packed layer of the cleaning material a be partitioned by a frame body 5 such as a lattice so that the compacted state is avoided as much as possible.
- the same granulation and heating may be performed as needed if the granular powdery soil is a fine powdery soil or a granular soil of a certain degree that is not granulated. Thereby, a similar water quality purification material a can be obtained.
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Dispersion Chemistry (AREA)
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- Water Treatment By Sorption (AREA)
Abstract
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-042942 | 2004-02-19 | ||
JP2004042942 | 2004-02-19 |
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WO2005080274A1 true WO2005080274A1 (ja) | 2005-09-01 |
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PCT/JP2005/002623 WO2005080274A1 (ja) | 2004-02-19 | 2005-02-18 | 水質浄化材 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011045827A (ja) * | 2009-08-26 | 2011-03-10 | Dai Ichi Kogyo Seiyaku Co Ltd | 脱硫剤及びその製造方法 |
CN104492404A (zh) * | 2014-12-03 | 2015-04-08 | 天津大学 | 颗粒吸附剂及其制备方法和在吸附氨氮中的应用 |
CN115212840A (zh) * | 2022-06-23 | 2022-10-21 | 中国冶金地质总局矿产资源研究院 | 一种综合利用难选冶伴生铁锰矿制备甲醛净化材料的方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0368445A (ja) * | 1989-08-08 | 1991-03-25 | Damu Suigenchi Kankyo Seibi Center | リン除去材及びその製造方法 |
JPH07155753A (ja) * | 1993-12-07 | 1995-06-20 | Tochigi Denshi Kogyo Kk | 排水処理装置と排水処理装置による排水処理方法と 排水処理システムによる排水処理方法 |
JPH11309448A (ja) * | 1998-04-30 | 1999-11-09 | Kureatera:Kk | 砒素(iii、v)、フッ素吸着ろ過材およびその製造方法 |
JP2000117020A (ja) * | 1998-10-16 | 2000-04-25 | Konichi Komatsu | 接触浄化材及びその製造方法 |
JP2004010473A (ja) * | 2002-06-06 | 2004-01-15 | Michio Henmi | リモナイトを混錬した焼成成形物およびこの焼成成形物を焼成する薪窯 |
-
2005
- 2005-02-18 WO PCT/JP2005/002623 patent/WO2005080274A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0368445A (ja) * | 1989-08-08 | 1991-03-25 | Damu Suigenchi Kankyo Seibi Center | リン除去材及びその製造方法 |
JPH07155753A (ja) * | 1993-12-07 | 1995-06-20 | Tochigi Denshi Kogyo Kk | 排水処理装置と排水処理装置による排水処理方法と 排水処理システムによる排水処理方法 |
JPH11309448A (ja) * | 1998-04-30 | 1999-11-09 | Kureatera:Kk | 砒素(iii、v)、フッ素吸着ろ過材およびその製造方法 |
JP2000117020A (ja) * | 1998-10-16 | 2000-04-25 | Konichi Komatsu | 接触浄化材及びその製造方法 |
JP2004010473A (ja) * | 2002-06-06 | 2004-01-15 | Michio Henmi | リモナイトを混錬した焼成成形物およびこの焼成成形物を焼成する薪窯 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011045827A (ja) * | 2009-08-26 | 2011-03-10 | Dai Ichi Kogyo Seiyaku Co Ltd | 脱硫剤及びその製造方法 |
CN104492404A (zh) * | 2014-12-03 | 2015-04-08 | 天津大学 | 颗粒吸附剂及其制备方法和在吸附氨氮中的应用 |
CN115212840A (zh) * | 2022-06-23 | 2022-10-21 | 中国冶金地质总局矿产资源研究院 | 一种综合利用难选冶伴生铁锰矿制备甲醛净化材料的方法 |
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