Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
River channel dredging method
The invention relates to the technical field of river channel dredging, in particular to a river channel dredging method which comprises the following steps: dividing a riverway to be cleaned into cofferdams, and dredging the riverway in a segmented manner by adopting a cutter suction pumping mode and a hydraulic flushing and digging mode; then subjecting the cleaned muddy water sequentially to preliminary precipitation, sorting and flocculent precipitation to obtain purified sludge; finally, dehydrating and sun-drying the purified sludge in sequence, and backfilling a mud cake after sun-drying. According to the river channel dredging method, the physical and chemical combined treatment process is adopted and are ingeniously combined, so that the arsenic, copper, chromium and other heavy metal ions in the bottom mud can be effectively treated, harmless and resourceful treatment of the bottom mud is achieved, secondary pollution caused by discarding of the bottom mud without treatment can be prevented and the bottom mud can be effectively utilized; therefore, flood discharge and dredging capacity of the riverway is enhanced, the problem that silting pollution of the riverway is difficult to dispose is solved, and the purposes of pollutant reduction, stabilization, harmlessness and recycling are achieved.
本发明涉及河道清淤技术领域，尤其是涉及一种河道清淤方法，包括以下步骤：将拟清理河道进行围堰划分，并采用绞吸泵送、辅以水力冲挖的方式进行分段清淤；将清理出的泥水依次进行初步沉淀、分拣、絮凝沉淀，得到净化后的淤泥；将净化后的淤泥依次进行脱水、翻晒，并将翻晒所得到的泥饼回填。本发明的河道清淤方法采用物理、化学相结合的处理流程，将两种方法进行巧妙地结合，可有效处理底泥中的砷、铜、铬等重金属离子，实现对底泥的无害化和资源化处理，既能防止因底泥未经处理就弃置造成的二次污染，又能有效利用底泥，增强河道的行洪疏浚能力，解决了河道淤积污染处置难的问题，达到了对污染物减量化、稳定化、无害化和资源化的处理目的。
River channel dredging method
The invention relates to the technical field of river channel dredging, in particular to a river channel dredging method which comprises the following steps: dividing a riverway to be cleaned into cofferdams, and dredging the riverway in a segmented manner by adopting a cutter suction pumping mode and a hydraulic flushing and digging mode; then subjecting the cleaned muddy water sequentially to preliminary precipitation, sorting and flocculent precipitation to obtain purified sludge; finally, dehydrating and sun-drying the purified sludge in sequence, and backfilling a mud cake after sun-drying. According to the river channel dredging method, the physical and chemical combined treatment process is adopted and are ingeniously combined, so that the arsenic, copper, chromium and other heavy metal ions in the bottom mud can be effectively treated, harmless and resourceful treatment of the bottom mud is achieved, secondary pollution caused by discarding of the bottom mud without treatment can be prevented and the bottom mud can be effectively utilized; therefore, flood discharge and dredging capacity of the riverway is enhanced, the problem that silting pollution of the riverway is difficult to dispose is solved, and the purposes of pollutant reduction, stabilization, harmlessness and recycling are achieved.
本发明涉及河道清淤技术领域，尤其是涉及一种河道清淤方法，包括以下步骤：将拟清理河道进行围堰划分，并采用绞吸泵送、辅以水力冲挖的方式进行分段清淤；将清理出的泥水依次进行初步沉淀、分拣、絮凝沉淀，得到净化后的淤泥；将净化后的淤泥依次进行脱水、翻晒，并将翻晒所得到的泥饼回填。本发明的河道清淤方法采用物理、化学相结合的处理流程，将两种方法进行巧妙地结合，可有效处理底泥中的砷、铜、铬等重金属离子，实现对底泥的无害化和资源化处理，既能防止因底泥未经处理就弃置造成的二次污染，又能有效利用底泥，增强河道的行洪疏浚能力，解决了河道淤积污染处置难的问题，达到了对污染物减量化、稳定化、无害化和资源化的处理目的。
River channel dredging method
一种河道清淤方法
MI WEIXING (Autor:in) / ZHANG YIZHOU (Autor:in)
10.11.2020
Patent
Elektronische Ressource
Chinesisch
River channel dredging equipment and dredging method thereof
| Europäisches Patentamt | 2023