WO2005075364A1 - 多糖類を主成分として含む天然原料から形成された水質浄化用固形材およびこれを用いた水質浄化方法 - Google Patents
多糖類を主成分として含む天然原料から形成された水質浄化用固形材およびこれを用いた水質浄化方法 Download PDFInfo
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- WO2005075364A1 WO2005075364A1 PCT/JP2005/001612 JP2005001612W WO2005075364A1 WO 2005075364 A1 WO2005075364 A1 WO 2005075364A1 JP 2005001612 W JP2005001612 W JP 2005001612W WO 2005075364 A1 WO2005075364 A1 WO 2005075364A1
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- Prior art keywords
- water
- water purification
- solid material
- polysaccharide
- organic carbon
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 165
- 238000000746 purification Methods 0.000 title claims abstract description 45
- 239000011343 solid material Substances 0.000 title claims abstract description 38
- 150000004676 glycans Chemical class 0.000 title claims abstract description 14
- 229920001282 polysaccharide Polymers 0.000 title claims abstract description 14
- 239000005017 polysaccharide Substances 0.000 title claims abstract description 14
- 239000002994 raw material Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 12
- 244000005700 microbiome Species 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 229920002472 Starch Polymers 0.000 claims description 14
- 239000008107 starch Substances 0.000 claims description 14
- 235000019698 starch Nutrition 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 11
- 230000002950 deficient Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 41
- 229910052799 carbon Inorganic materials 0.000 description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 34
- 229910052757 nitrogen Inorganic materials 0.000 description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- 238000012360 testing method Methods 0.000 description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 241000209094 Oryza Species 0.000 description 8
- 235000007164 Oryza sativa Nutrition 0.000 description 8
- 230000000813 microbial effect Effects 0.000 description 8
- 235000009566 rice Nutrition 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 241000251468 Actinopterygii Species 0.000 description 4
- 244000046146 Pueraria lobata Species 0.000 description 4
- 235000010575 Pueraria lobata Nutrition 0.000 description 4
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 4
- 238000005842 biochemical reaction Methods 0.000 description 4
- 235000013339 cereals Nutrition 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000000855 fermentation Methods 0.000 description 4
- 230000004151 fermentation Effects 0.000 description 4
- 235000019688 fish Nutrition 0.000 description 4
- 239000005445 natural material Substances 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 229920001817 Agar Polymers 0.000 description 3
- 241000555825 Clupeidae Species 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000008272 agar Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 235000019512 sardine Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003911 water pollution Methods 0.000 description 3
- 241000195493 Cryptophyta Species 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 238000004108 freeze drying Methods 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 230000002503 metabolic effect Effects 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 230000007269 microbial metabolism Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 229940100486 rice starch Drugs 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 244000247812 Amorphophallus rivieri Species 0.000 description 1
- 235000001206 Amorphophallus rivieri Nutrition 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000252229 Carassius auratus Species 0.000 description 1
- 240000004270 Colocasia esculenta var. antiquorum Species 0.000 description 1
- 235000002723 Dioscorea alata Nutrition 0.000 description 1
- 235000007056 Dioscorea composita Nutrition 0.000 description 1
- 235000009723 Dioscorea convolvulacea Nutrition 0.000 description 1
- 235000005362 Dioscorea floribunda Nutrition 0.000 description 1
- 235000004868 Dioscorea macrostachya Nutrition 0.000 description 1
- 235000005361 Dioscorea nummularia Nutrition 0.000 description 1
- 235000005360 Dioscorea spiculiflora Nutrition 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- 235000006350 Ipomoea batatas var. batatas Nutrition 0.000 description 1
- 229920002752 Konjac Polymers 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000010419 agar Nutrition 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000012237 artificial material Substances 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 229920006167 biodegradable resin Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
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- 230000002596 correlated effect Effects 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000004879 dioscorea Nutrition 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 230000001146 hypoxic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000252 konjac Substances 0.000 description 1
- 235000010485 konjac Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
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- 239000010902 straw Substances 0.000 description 1
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- 239000002351 wastewater Substances 0.000 description 1
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- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Definitions
- the present invention relates to a solid material for water purification which is supplied into treated water and promotes microbial activity when purifying water using microorganisms, and a water purification method using the same.
- Organic wastes (water pollutants) dissolved in natural and artificially constructed water systems are detoxified by oxidative alternation accompanying the biological metabolism of aerobic microorganisms. Specifically, ammonia nitrogen mainly generated from the excrement of living organisms living in water systems is converted into nitrogen oxides such as nitrite nitrogen and nitrate nitrogen, and organic and phosphorus organic waste. Will be replaced with iodine-type phosphoric acid sardines such as sulfates and phosphates. However, the accumulation of these sardines in water causes a decrease in pH, eutrophication, and aggravation of algae and moss, leading to deterioration of water quality. Become.
- the above-mentioned oxidized sardines can be used to produce anaerobic microorganisms if there is an anoxic region in the water system and an anaerobic microorganism and an organic carbon source that is the energy required for its vital metabolism are present. It is broken down into nitrogen gas and the like by metabolic fermentation, that is, reductive alternation, and released into the atmosphere.
- the amount of nitrogenous waste that is decomposed and removed by such biological alternation generally depends on the abundance ratio of nitrogen and carbon (CZN ratio). That is, the amount of nitrogen decomposed and reduced by microbial metabolism, in particular, the amount of nitrogen oxides such as nitrite nitrogen and nitrate nitrogen decomposed is determined by the concentration of organic carbon source in the anoxic region where anaerobic microorganisms are present. It depends. Generally, a highly efficient CZN ratio for leading to a fermentation state with the highest microbial metabolic activity is 6 or more. Therefore, artificially providing an organic carbon source is a very important matter for biologically purifying water quality.
- Japanese Patent Application Laid-Open No. 9 234493 discloses a material obtained by mixing a low-molecular saccharide with a polysaccharide in a porous substrate. Is used as an organic carbon source for water treatment.
- Japanese Patent Application Laid-Open No. 2001-269699 describes that a biodegradable plastic carrier derived from starch is used as an organic carbon source for water treatment. .
- the organic carbon source of Patent Document 1 uses at least a porous substrate, low-molecular-weight saccharides and polysaccharides as raw materials, and the organic carbon source of Patent Document 2 has an artificial source. Because of the use of these plastics, there are limits to reducing the cost of each product.
- the present invention is to provide a solid material for water purification that is low in cost and easy to handle, not only having excellent water purification functions, using only natural raw materials. For that purpose.
- the present invention has the following features (1) to (9).
- a solid material for water purification used in carrying out water purification using microorganisms, characterized by processing only natural raw materials containing a polysaccharide as a main component.
- a material having a certain CZN ratio that is, a composition as a mixture of carbon and nitrogen and having a very small mixture ratio of nitrogen is used in an aqueous system to be subjected to water quality improvement or water quality maintenance.
- the main point is to keep the water system in a nitrogen-deficient state by continually promoting low-level (low activity!) Biochemical reactions (fermentation) by placing them in the anoxic region.
- Nitrogen deficiency caused by microbial metabolism that is continuously carried out in a partial area of the water system causes the eutrophication of water by greedily consuming (reducing replacement) nitrogen oxides generated in the water system. It works to maintain and possibly maintain clean water quality in water systems that tend to accumulate and tend to be eutrophic.
- natural raw materials containing polysaccharides as the main component, especially natural extracted starch often have a shortage of nitrogen sources in their composition to obtain the most efficient biochemical reaction (fermentation).
- the lack of nitrogen sources will be obtained from the water system, and such biochemical reactions correlated with carbon and nitrogen will be continuously carried out in the water system.
- Toxic Substances Produced and Accumulated Acid It promotes atmospheric release accompanying the decomposition of substances, etc., and maintains the oligotrophic state of the water system, thus contributing to maintaining a very stable and clean water environment.
- the solid material for water purification of the present invention does not use an artificial material, but uses only a natural material containing a polysaccharide as a main component. Therefore, it is possible to procure the material at low cost and easily. it can. As a result, it is possible to provide organic carbon sources to individual users stably and at low cost, and it is necessary to use relatively large amounts of solid materials for water purification such as lakes, rivers, or large water tanks.
- the water treatment can be performed inexpensively in the following places. Further, since the solid material of the present invention does not require an additional supply for a relatively long period of time, as well as a continuous supply such as alcohol, it is necessary to easily purify and maintain the quality of the water to be treated. In addition, long-term costs required for water purification can be reduced.
- water purification solid material of the present invention is particularly suitable for breeding aquatic organisms such as fish, amphibians and aquatic plants from the above viewpoints.
- the present invention provides a solid material for water purification characterized by processing and molding only a natural material containing a polysaccharide as a main component.
- the polysaccharide is not particularly limited as long as it produces a substance that becomes an energy source of microorganisms when decomposed in the water to be treated, but starch is preferred.
- Starch is decomposed into glucose in the water to be treated, and then into lower alcohol (ethanol) and carbon dioxide.
- the lower alcohol is used as an energy source for anaerobic microorganisms
- the diacid carbon is used as an energy source for aerobic microorganisms. This makes it possible to efficiently oxidize and reduce ammonia in the water to be treated, and finally remove it as nitrogen gas from the water to be treated.
- the carbon-Z nitrogen ratio (CZN ratio) of the starch used is preferably 6 or more in order to maintain the CZN ratio in water that is optimal for microbial activity and perform efficient water treatment. More preferred to be That's right.
- the natural raw material containing a polysaccharide as a main component is not particularly limited, and for example, grains such as rice, rice cake, konjac yam, corn, potato, and sweet potato, agar, and kuzu can be used. Can be used alone or in combination of two or more.
- the natural raw materials as mentioned in the above specific examples are easily dissolved in water as they are, and the water becomes cloudy. Therefore, it is necessary to perform processing to prevent this.
- the type of processing to be performed is a matter to be determined by conducting appropriate experiments in consideration of the natural materials used, the period of use, cost, etc., and is not particularly limited. Any process may be used as long as the solubility in water is reduced as compared with the raw material itself, and the solid material of the present invention is gradually decomposed in water for a desired period or more.
- drying treatment such as natural drying, hot air drying, vacuum drying, freeze drying (freeze drying), kneading, pulverizing, heating, cooling or a combination thereof, etc. Perform basic processing to reduce its solubility.
- “soluble” means that a natural material itself and a predetermined amount of the solid material of the present invention obtained by processing the natural material are put into water and left for a predetermined period (two days and one week). Means the degree of white turbidity of the water, and it is desirable that the degree of the solid material of the present invention is thinner and more transparent than the natural raw material itself.
- the amount of the organic carbon source of the present invention to be supplied is not particularly limited since the decomposition rate and the amount of decomposition of the supplied organic carbon source are naturally adjusted based on the CZN ratio. However, it is preferable to add 0.1-5 g to 1 L of the water to be treated, and it is more preferable to add 0.1-lg. If the supply amount per liter of treated water is less than 0.1 lg, there is a possibility that a sufficient amount of organic carbon source cannot be supplied over a long period of time. Also, if the supply amount per 1 L of the water to be treated exceeds 5 g, the water may become cloudy due to excessive elution of the organic carbon source, and the BOD value may increase.
- the solid material for water purification described above is mixed with the poor acid in the water to be treated. It is characterized by being installed in the elementary region.
- the anoxic region is a region where the oxygen concentration in the water is low, and is an environmental region suitable for anaerobic microorganisms to act.
- the low oxygen region is preferably 30% or less of the dissolved oxygen saturation point (the maximum amount of oxygen dissolved in water) at a predetermined water temperature. It can also be determined by the oxidation-reduction potential (ORP). In this case, since the ORP of ordinary rivers and ponds is 360-430 mV, if the ORP is less than -50-200 mV, the oxygen-deficient condition of the present invention can be determined. Area.
- the formation site is set in an aquarium for ornamental or live fish for ordinary households or business use, or in an aquarium!
- sand that does not change the water characteristics is laid at the bottom of the tank with a thickness of about 5 to 20 cm, and a stagnant area of water flow is formed below this sand layer. Since the water in the aquarium always circulates and generates a water flow, almost no water flows through the above-mentioned stagnant area, or a very small amount of water flow is generated. An area is configured.
- a housing is provided at the bottom of a water tank with a small opening that allows a small amount of water and gas to pass therethrough, and an oxygen-deficient region is formed inside the housing.
- a double-type filter medium capable of forming an aerobic area on the upper side and an anaerobic area on the lower side is installed, and the aerobic area on the surface of the filter medium is provided. The water that passes through the aerobic zone is consumed by the aerobic microbial community that is implanted, so the lower anaerobic zone constitutes the anoxic zone.
- a filter housing in which a very small amount of water can circulate is provided inside the water tank, and the water is circulated very slowly in the filter, so that an oxygen-deficient region is formed inside the housing.
- a fifth example is to provide a stagnant area of water inside the bottom filter laid on the inner bottom of the water tank or outside the water passage, and circulate a very small amount of water in the stagnant area. Can be configured.
- the above five examples show the case where the oxygen-deficient region is formed in the water tank.
- a hypoxic region outside the tank and circulate a small amount of water in the tank.
- a partition is provided inside a filter housing installed outside a water tank to form a stagnant area of water through which only a very small amount of water passes, and a stagnant area above the stagnant area is formed. By blocking the surface from the atmosphere, an oxygen-deficient region can be formed.
- a return pipe that returns water to the inside of the water tank installed in the outside of the water tank has a bypass with a filter, and a small amount of water returning to the water tank is traced to the bypass filter.
- the oxygen-deficient region is formed inside or outside the water tank.
- the water to be treated is water that exists in the natural world, such as stored water at a purification plant, rivers, ponds, or seawater, a position where only a small amount of water passes under the soil at the bottom of the water
- An anoxic region can be set at
- a filter housing that can circulate a certain amount of water outside the water or in the water is installed. Regions can be configured.
- anoxic regions can be constructed by installing a filter housing in the same manner as above. be able to.
- an oxygen-deficient region in an environment with a small amount of dissolved oxygen can be formed inside or outside a water tank, or inside or outside water existing in nature.
- the shape is a round dumpling (about 20 mm in diameter).
- the average weight per piece is 10g.
- the dissolved ammonia and carbon dioxide concentrations were measured using a colorimetric solution method from TETRA, and the nitrite and nitric acid concentrations were measured using a colorimetric test paper from MERCK. Table 1 shows the results.
- nitrite and nitrate nitrogen the values in the test plot tend to be constant or decreasing, whereas the values in the control plot tend to increase. In other words, it was shown that nitrite and nitrate nitrogen in the test plot were decomposed without accumulating in water by anaerobic microorganisms using alcohol generated by the decomposition of glucose as an energy source.
- pH value stability As described above, in the test plot, pH value stability, ammonia elimination rate, nitrite and nitrate All values, such as the decomposition of acid nitrogen and the stability of carbon dioxide concentration, were superior to those in the control group, demonstrating that there was a clear difference in the microbial activities between the two groups.
- Example 2 the same evaluation as in Example 1 was performed with the type of the organic carbon source changed.
- processed rice starch (test zone 2) and processed kudzu starch (test zone 3) were used as organic carbon sources in the test plot, and a water tank (organic control) without organic carbon source was used as a control plot.
- Section 2) and an aquarium containing a biodegradable resin PHB (polyhydroxybutylate, Mitsubishi Monsanto Kasei Co., Ltd.) as an organic carbon source (control section 3) were prepared as in Example 1. Was evaluated.
- processed rice starch is manufactured by milling rice cake rice, cutting it into long and thin pieces, wrapping it in paper, knitting it with straw, immersing it in water for about four to five days, hanging it under the eaves in the cold, and drying it.
- processed kudzu starch is produced by dissolving kudzu in water, boiled down, cooled and solidified.
- the evaluation items are the concentrations of ammonia, nitrous acid and nitric acid and the total hardness (TH).
- TH is a numerical value indicating the amount of minerals such as Mg and Ca present in water, and is a useful evaluation criterion for understanding water pollution. The higher the value, the more water pollution. Table 2 shows the results.
- Elapsed water temperature Test plot 2 (organic carbon source: frozen rice cake) Test plot 3 (organic carbon source: crunchy) Control plot 2 (no organic carbon source) Control plot 3 (organic carbon source: PHB) Days (V) pH ⁇ 4 ⁇ 0 2 ⁇ 0 3 ⁇ H ⁇ 4 ⁇ 0 2 ⁇ 0 3 ⁇ pH ⁇ 4 ⁇ 0 2 ⁇ 0 3 ⁇ pH NH 4 N0 2 N0 3 TH
- Example 2 it is particularly notable that there was a difference in water purification function between the control plot 3 containing the organic carbon source PHB and the test plot.
- the fact shows that the organic carbon source of the present invention and the water purification method using the same are superior to the conventionally used solid organic carbon source. It is considered that such a difference is largely caused by a trace amount of nitrogen contained in the organic carbon source using natural starch in the test plot.
- an organic carbon source naturally starch
- the nitrogen should always maintain the CZN ratio in water in an optimal range for microbial activity.
- an organic carbon source (PHB) containing no nitrogen is used, the CZN ratio in water depends only on the nitrogen dissolved in water. It is considered that the microbial activity became intermittent and unstable.
- the solid material for water purification of the present invention can be used for water stored in large-scale water tanks installed in water tanks used in ordinary households or for business, aquariums, and the like, gardens, golf, and the like. Ponds installed at sites, or water used for general living water, well water, agriculture and livestock, industrial water, or their drainage, as well as lakes and rivers, all of which require purification It is suitable for the water to be treated.
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Farming Of Fish And Shellfish (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05709705A EP1717207A1 (en) | 2004-02-06 | 2005-02-03 | Water purification solid material produced from natural raw material whose main component is polysaccharide and method of water purification therewith |
US10/597,681 US7604745B2 (en) | 2004-02-06 | 2005-02-03 | Water-purifying solid material made of a natural raw material containing polysaccharides as principal components, and water-purifying method using the same |
CA002554704A CA2554704A1 (en) | 2004-02-06 | 2005-02-03 | Water purification solid material produced from natural raw material whose main component is polysaccharide and method of water purification therewith |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-030519 | 2004-02-06 | ||
JP2004030519 | 2004-02-06 | ||
JP2004-211857 | 2004-07-20 | ||
JP2004211857A JP2005246368A (ja) | 2004-02-06 | 2004-07-20 | 多糖類を主成分として含む天然原料から形成された水質浄化用固形材およびこれを用いた水質浄化方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005075364A1 true WO2005075364A1 (ja) | 2005-08-18 |
Family
ID=34840151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/001612 WO2005075364A1 (ja) | 2004-02-06 | 2005-02-03 | 多糖類を主成分として含む天然原料から形成された水質浄化用固形材およびこれを用いた水質浄化方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7604745B2 (ja) |
EP (1) | EP1717207A1 (ja) |
JP (1) | JP2005246368A (ja) |
CA (1) | CA2554704A1 (ja) |
WO (1) | WO2005075364A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110092427A (zh) * | 2019-05-08 | 2019-08-06 | 无锡中顺生物技术有限公司 | 一种虾塘使用的解毒剂及其应用 |
Citations (6)
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JPH11114593A (ja) * | 1997-10-14 | 1999-04-27 | Office Hosoya:Kk | 水処理方法 |
JP2000153293A (ja) * | 1998-11-17 | 2000-06-06 | Hitachi Chemical Techno-Plant Co Ltd | 有機物及び窒素化合物を含有する排水の処理方法及びそれを用いた排水処理装置 |
JP2000254687A (ja) * | 1999-03-08 | 2000-09-19 | Taisei Corp | 地下水の浄化方法 |
JP2001096130A (ja) * | 1999-09-30 | 2001-04-10 | Mitsui Eng & Shipbuild Co Ltd | 窒素系悪臭成分含有ガスの浄化装置および浄化方法 |
WO2001070637A1 (fr) * | 2000-03-24 | 2001-09-27 | Japan Science And Technology Corporation | Procede de clarification directe d'eau souterraine polluee par des nitrates |
JP2002273471A (ja) * | 2001-03-23 | 2002-09-24 | Yonden Gijutsu Consultant:Kk | 水質浄化装置及び水質浄化方法 |
Family Cites Families (14)
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JPS58166900A (ja) | 1982-03-29 | 1983-10-03 | Seikosha Co Ltd | 圧電式音響発生装置 |
US4479309A (en) * | 1982-04-05 | 1984-10-30 | Tolson Raymond C | Method and apparatus for drying cereal grain |
JP2649650B2 (ja) | 1994-03-18 | 1997-09-03 | チッソ株式会社 | 昜崩壊性成形物および製造方法 |
JP3831003B2 (ja) | 1996-03-01 | 2006-10-11 | 東洋電化工業株式会社 | 水処理に用いる脱窒用材及びこれを用いた水処理方法 |
JPH09294499A (ja) | 1996-05-08 | 1997-11-18 | Koji Mitsuo | 固形物 |
JP3741170B2 (ja) | 1996-06-21 | 2006-02-01 | チッソ株式会社 | 水崩壊性複合繊維及び不織布、吸収性物品 |
JPH10165177A (ja) | 1996-12-13 | 1998-06-23 | Susumu Maruyama | 細菌着床具およびその製造法 |
JPH10330175A (ja) | 1997-03-31 | 1998-12-15 | Koji Mitsuo | 固形物 |
JP2000072906A (ja) | 1998-08-27 | 2000-03-07 | Toyo Purasuto:Kk | 生分解性樹脂発泡体 |
JP2000153290A (ja) | 1998-11-17 | 2000-06-06 | Hitachi Chemical Techno-Plant Co Ltd | 汚水処理方法及びそれを用いた汚水浄化槽 |
JP2000319457A (ja) | 1999-05-13 | 2000-11-21 | Sanwa Kako Co Ltd | 澱粉入り架橋ポリオレフィン連続気泡体及びその製造方法 |
DE10120421B4 (de) | 2001-04-26 | 2019-02-21 | Tetra Gmbh | Nitratentfernung aus Aquarienwasser |
JP2003340482A (ja) | 2002-05-29 | 2003-12-02 | Seiji Yokokura | 水質改善材及び水質改善方法 |
US20040175456A1 (en) * | 2003-03-06 | 2004-09-09 | Lauren Keilbach | Tablets for feeding fish and methods of making tablets for feeding fish |
-
2004
- 2004-07-20 JP JP2004211857A patent/JP2005246368A/ja active Pending
-
2005
- 2005-02-03 CA CA002554704A patent/CA2554704A1/en not_active Abandoned
- 2005-02-03 EP EP05709705A patent/EP1717207A1/en not_active Withdrawn
- 2005-02-03 US US10/597,681 patent/US7604745B2/en not_active Expired - Fee Related
- 2005-02-03 WO PCT/JP2005/001612 patent/WO2005075364A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11114593A (ja) * | 1997-10-14 | 1999-04-27 | Office Hosoya:Kk | 水処理方法 |
JP2000153293A (ja) * | 1998-11-17 | 2000-06-06 | Hitachi Chemical Techno-Plant Co Ltd | 有機物及び窒素化合物を含有する排水の処理方法及びそれを用いた排水処理装置 |
JP2000254687A (ja) * | 1999-03-08 | 2000-09-19 | Taisei Corp | 地下水の浄化方法 |
JP2001096130A (ja) * | 1999-09-30 | 2001-04-10 | Mitsui Eng & Shipbuild Co Ltd | 窒素系悪臭成分含有ガスの浄化装置および浄化方法 |
WO2001070637A1 (fr) * | 2000-03-24 | 2001-09-27 | Japan Science And Technology Corporation | Procede de clarification directe d'eau souterraine polluee par des nitrates |
JP2002273471A (ja) * | 2001-03-23 | 2002-09-24 | Yonden Gijutsu Consultant:Kk | 水質浄化装置及び水質浄化方法 |
Also Published As
Publication number | Publication date |
---|---|
US20070163953A1 (en) | 2007-07-19 |
US7604745B2 (en) | 2009-10-20 |
JP2005246368A (ja) | 2005-09-15 |
EP1717207A1 (en) | 2006-11-02 |
CA2554704A1 (en) | 2005-08-18 |
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