JP6247663B2 - 浚渫システム - Google Patents
浚渫システム Download PDFInfo
- Publication number
- JP6247663B2 JP6247663B2 JP2015105956A JP2015105956A JP6247663B2 JP 6247663 B2 JP6247663 B2 JP 6247663B2 JP 2015105956 A JP2015105956 A JP 2015105956A JP 2015105956 A JP2015105956 A JP 2015105956A JP 6247663 B2 JP6247663 B2 JP 6247663B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- mud
- tank
- solid
- separation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 170
- 238000000926 separation method Methods 0.000 claims description 139
- 239000007788 liquid Substances 0.000 claims description 65
- 239000002002 slurry Substances 0.000 claims description 45
- 238000003756 stirring Methods 0.000 claims description 26
- 238000001556 precipitation Methods 0.000 claims description 25
- 239000006228 supernatant Substances 0.000 claims description 22
- 238000007792 addition Methods 0.000 claims description 17
- 239000000356 contaminant Substances 0.000 claims description 16
- 238000004062 sedimentation Methods 0.000 claims description 12
- 230000002776 aggregation Effects 0.000 claims description 8
- 210000003660 Reticulum Anatomy 0.000 claims description 7
- 238000004220 aggregation Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 230000004931 aggregating Effects 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000005054 agglomeration Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 description 20
- 239000004744 fabric Substances 0.000 description 17
- 238000005345 coagulation Methods 0.000 description 9
- 230000015271 coagulation Effects 0.000 description 9
- 239000000941 radioactive substance Substances 0.000 description 6
- 230000001112 coagulant Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound 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- 239000005416 organic matter Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound 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- 229910052698 phosphorus Inorganic materials 0.000 description 1
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Description
(1)底泥を攪拌する攪拌羽根26を有するとともに攪拌した底泥を水ごと吸引して底泥スラリとして圧送する送水ポンプ20と、水面に浮いて前記送水ポンプ20を水中に吊下げる台船10と、前記送水ポンプ20が吸引した底泥スラリを搬送する送水ホース12と、前記送水ホース12により搬送された底泥スラリから重量物を遠心分離により除去する遠心分離部30と、前記遠心分離部30を通過した底泥スラリから夾雑物を除去する夾雑物選別部40と、前記夾雑物選別部40を通過した底泥スラリと凝集剤とを攪拌し底泥を凝集沈降させる凝集分離槽50と、前記凝集分離槽50で凝集沈降した底泥を濃縮する濃縮槽60と、前記濃縮槽60で濃縮された底泥を脱水するベルトプレス部80と、前記ベルトプレス部80の脱水動作によって生じた水分が処理水として供給される固液分離システム90と、を有し、
前記固液分離システム90は、
処理水を攪拌しながら凝集剤の投入を行う凝集剤添加槽72と、凝集剤の添加された処理水を凝集物と上澄水とに分離する沈殿分離槽92と、前記沈殿分離槽92に溜まった凝集物を外部に送出する凝集物貯留部78と、を有し、
前記沈殿分離槽92は、
下流側が深くなるよう所定の角度θで傾斜した傾斜底面部96と、前記傾斜底面部96の上流側に設けられ処理水が流入する供給口95と、前記傾斜底面部96の下流側の下部に設けられ前記凝集物貯留部78と接続する排出口94と、前記沈殿分離槽92の上部を覆うように設けられ下流側に向けて所定の角度φで傾いた複数の管体で構成される管状部材98と、を有し、
沈殿分離槽92に溜まった凝集物を前記凝集分離槽50もしくは前記濃縮槽60に還流させることを特徴とする浚渫システム100を提供することにより、上記課題を解決する。
(2)固液分離システム90を構成する管状部材98が略正6角形の孔形状を呈し所定の厚みを有するハニカムコアであることを特徴とする上記(1)記載の浚渫システム100を提供することにより、上記課題を解決する。
(3)固液分離システム90を構成する傾斜底面部96の傾斜角が20°〜30°であり、管状部材98の管体の傾斜角が60°±5°であることを特徴とする上記(1)または(2)に記載の浚渫システム100を提供することにより、上記課題を解決する。
12 送水ホース
20 送水ポンプ
26 攪拌羽根
30 遠心分離部
40 夾雑物選別部
50 凝集分離槽
60 濃縮槽
72 凝集剤添加槽
78 凝集物貯留部
80 ベルトプレス部
90 固液分離システム
92 沈殿分離槽
94 排出口
95 供給口
96 傾斜底面部
98 管状部材
100 浚渫システム
Claims (3)
- 底泥を攪拌する攪拌羽根を有するとともに、攪拌した底泥を水ごと吸引して底泥スラリとして圧送する送水ポンプと、
水面に浮いて前記送水ポンプを水中に吊下げる台船と、
前記送水ポンプが吸引した底泥スラリを搬送する送水ホースと、
前記送水ホースにより搬送された底泥スラリから重量物を遠心分離により除去する遠心分離部と、
前記遠心分離部を通過した底泥スラリから夾雑物を除去する夾雑物選別部と、
前記夾雑物選別部を通過した底泥スラリと凝集剤とを攪拌し、底泥を凝集沈降させる凝集分離槽と、
前記凝集分離槽で凝集沈降した底泥を濃縮する濃縮槽と、
前記濃縮槽で濃縮された底泥を脱水するベルトプレス部と、
前記ベルトプレス部の脱水動作によって生じた水分が処理水として供給される固液分離システムと、を有し、
前記固液分離システムは、
前記処理水を攪拌しながら凝集剤の投入を行う凝集剤添加槽と、
凝集剤の添加された処理水を凝集物と上澄水とに分離する沈殿分離槽と、
前記沈殿分離槽に溜まった凝集物を外部に送出する凝集物貯留部と、を有し、
前記沈殿分離槽は、
下流側が深くなるよう所定の角度で傾斜した傾斜底面部と、
前記傾斜底面部の上流側に設けられ処理水が流入する供給口と、
前記傾斜底面部の下流側の下部に設けられ前記凝集物貯留部と接続する排出口と、
前記沈殿分離槽の上部を覆うように設けられ下流側に向けて所定の角度で傾いた複数の管体で構成される管状部材と、を有し、
前記沈殿分離槽に溜まった凝集物を前記凝集分離槽もしくは前記濃縮槽に還流させることを特徴とする浚渫システム。 - 固液分離システムを構成する管状部材が略正6角形の孔形状を呈し所定の厚みを有するハニカムコアであることを特徴とする請求項1記載の浚渫システム。
- 固液分離システムを構成する傾斜底面部の傾斜角が20°〜30°であり、管状部材の管体の傾斜角が60°±5°であることを特徴とする請求項1または請求項2に記載の浚渫システム。
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