A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR MODIFYING FLOATING MUD, AND FLOATING MUD MODIFYING MATERIAL
PROBLEM TO BE SOLVED: To provide a method for modifying floating mud, in which the floating mud, that is generated on the bottom of water when suspended matter is precipitated and accumulated, is modified so that elution of dissolved sulfide or nutrient salt from the floating mud can be suppressed, generation of hydrogen sulfide can be suppressed and resuspension due to dispersion of the floating mud can also be prevented.SOLUTION: The method for modifying floating mud, which is generated on the bottom of the water when the suspended matter is precipitated and accumulated, comprises the steps of: laying a floating mud modifying material, which contains 60 mass% or more steel slag having 10 mass% or more total iron content and has 20 vol.% or higher void ratio, on the bottom quality of the bottom of the water so that an iron component and a calcium component are supplied from the floating mud modifying material to the floating mud deposited thereon. The elution of dissolved sulfide or nutrient salt from the floating mud can be suppressed by the iron component and calcium component supplied from the floating mud modifying material to the floating mud, the generation of hydrogen sulfide can also be suppressed, and the floating mud is modified to have such a characteristic and state that the floating mud is re-deposited easily even when dispersed.SELECTED DRAWING: None
【課題】水底に懸濁物質が沈降・堆積することにより生じる浮泥を改質し、浮泥からの溶存硫化物や栄養塩の溶出を抑制できるとともに、硫化水素の発生を抑制でき、浮泥の巻き上げによる再懸濁も防止することができる浮泥の改質方法を提供する。【解決手段】水底に懸濁物質が沈降・堆積することにより生じる浮泥の改質方法であり、全鉄含有量が１０質量％以上の製鋼スラグを６０質量％以上含み、空隙率が２０体積％以上である浮泥改質材を水底の底質上に敷設し、この敷設された浮泥改質材から、その上に堆積する浮泥に鉄成分およびカルシウム成分を供給する。浮泥改質材から浮泥に供給された鉄成分およびカルシウム成分により、浮泥が溶存硫化物や栄養塩の溶出が抑制されるとともに、硫化水素の発生が抑制され、巻き上げられた場合も再堆積しやすい性状に改質される。【選択図】なし
METHOD FOR MODIFYING FLOATING MUD, AND FLOATING MUD MODIFYING MATERIAL
PROBLEM TO BE SOLVED: To provide a method for modifying floating mud, in which the floating mud, that is generated on the bottom of water when suspended matter is precipitated and accumulated, is modified so that elution of dissolved sulfide or nutrient salt from the floating mud can be suppressed, generation of hydrogen sulfide can be suppressed and resuspension due to dispersion of the floating mud can also be prevented.SOLUTION: The method for modifying floating mud, which is generated on the bottom of the water when the suspended matter is precipitated and accumulated, comprises the steps of: laying a floating mud modifying material, which contains 60 mass% or more steel slag having 10 mass% or more total iron content and has 20 vol.% or higher void ratio, on the bottom quality of the bottom of the water so that an iron component and a calcium component are supplied from the floating mud modifying material to the floating mud deposited thereon. The elution of dissolved sulfide or nutrient salt from the floating mud can be suppressed by the iron component and calcium component supplied from the floating mud modifying material to the floating mud, the generation of hydrogen sulfide can also be suppressed, and the floating mud is modified to have such a characteristic and state that the floating mud is re-deposited easily even when dispersed.SELECTED DRAWING: None
【課題】水底に懸濁物質が沈降・堆積することにより生じる浮泥を改質し、浮泥からの溶存硫化物や栄養塩の溶出を抑制できるとともに、硫化水素の発生を抑制でき、浮泥の巻き上げによる再懸濁も防止することができる浮泥の改質方法を提供する。【解決手段】水底に懸濁物質が沈降・堆積することにより生じる浮泥の改質方法であり、全鉄含有量が１０質量％以上の製鋼スラグを６０質量％以上含み、空隙率が２０体積％以上である浮泥改質材を水底の底質上に敷設し、この敷設された浮泥改質材から、その上に堆積する浮泥に鉄成分およびカルシウム成分を供給する。浮泥改質材から浮泥に供給された鉄成分およびカルシウム成分により、浮泥が溶存硫化物や栄養塩の溶出が抑制されるとともに、硫化水素の発生が抑制され、巻き上げられた場合も再堆積しやすい性状に改質される。【選択図】なし
METHOD FOR MODIFYING FLOATING MUD, AND FLOATING MUD MODIFYING MATERIAL
浮泥の改質方法及び浮泥改質材
MIYATA YASUTO (author)
2016-06-20
Patent
Electronic Resource
Japanese
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