Tunnel "Water Purifier" | Railway Construction Heavy Industry's sewage treatment system makes tunnel construction more environmentally friendly

What does the tunnel “water purifier” look like?

Railway Construction Heavy Industry adopts modular and integrated design ideas. A variety of sewage treatment systems have been developed for tunnel construction sewage. The system mainly includes a pre-sedimentation module, a treatment module, and a filter press module. Each functional module and treatment capacity can be selected according to actual needs. The construction site no longer needs to build a third-level sedimentation tank and other civil construction, and the sewage treatment system is easy to transfer to the site. Each module can be directly arranged in the tunnel, which requires low layout site requirements.

What is the black technology of the tunnel "water purifier"

The reason why the tunnel "water purifier" is effective , the reason lies in the equipment configuration: closed-loop water quality monitoring system, automatic pharmaceutical and dosing system, fully-automatic flocculation and sedimentation system, multi-media filtration system, program-controlled filter press system, intelligent control system, especially the actual closed-loop processing Process: sewage treatment process - flocculation sedimentation + filtration, mud treatment process - circulating slurry mixing + filter press.

The effect of using the tunnel "water purifier"

The "yellow mud soup"-like sewage enters the treatment system and is separated The water + mud cake discharge system is as clear as mineral water. The clean water can be directly reused for construction or discharged, and the mud cake can be directly transported to the slag yard. Of course, the specific process is more complicated: sewage in the tunnel can be treated through closed-loop treatment such as collection and storage, pre-sedimentation, flocculation sedimentation + filtration, circulating slurry + filter press, and filtrate recycling, so that sewage and sludge treatment and filtrate recycling can be achieved.

The entire water purification process of the tunnel purification equipment will not produce any toxic and harmful substances, no odor, and will not cause harm to the operators. The sewage in the entire tunnel can be purified in a narrow tunnel. Achieving recycling and zero discharge improves tunnel construction efficiency and water resource utilization, and fundamentally prevents the discharge of sewage outside the tunnel. After equipment treatment, the SS content of the filtrate is far less than 10mg/L, meeting GB3838-2002 "Surface Water Environmental Quality Standard" requires Class III water sources such as secondary protection areas for centralized drinking water surface water sources to meet the first-level discharge standard requirements of GB8978-1996 "Integrated Wastewater Discharge Standard". The moisture content of the mud cake is as low as 35%, making it easy to transport and reuse.

With a sharp tool in hand, project progress is more guaranteed! After the tunnel is equipped with a "water purifier" branded by China Railway Construction Heavy Industry, sewage treatment and recycling form a closed loop, making it greener, safer and more environmentally friendly. With its simple structure, convenient operation and maintenance, high water purification efficiency, water quality monitoring and zero discharge, the railway construction and heavy industry tunnel sewage treatment system has become an effective player in protecting green water and green mountains, and protecting clear water and blue sky during the construction process of the project. .