What Makes a 25-30T/H Soil Washing Plant Tick? Lessons from 上海某重金属污染场地修复案例
Technical deep dive into Desen Environmental's 25-30T/H soil washing plant: system architecture, engineering decisions, and how it achieved heavy metals removal at 上海某重金属污染场地修复案例.
Why Soil Washing Technology?
Soil washing is a physical-chemical separation process that exploits a simple principle: contaminants tend to bind to fine particles (silts and clays), while clean sand and gravel remain in the coarse fraction. By separating the two, the vast majority of contaminants can be isolated into a small volume for controlled treatment.
System Architecture at 上海某重金属污染场地修复案例
Desen configured a 25-30T/H plant targeting heavy metals. The line includes:
| Module | Function |
|---|---|
| Scalping Screen | Removes >100mm oversize; protects downstream equipment |
| Drum Scrubber | High-energy attrition breaks soil aggregates; water + mechanical action remove surface contaminants |
| Hydrocyclone Bank | Centrifugal separation: cut point as fine as 50–75 μm |
| Spiral Classifier | Gravity-based dewatering of coarse sand fraction |
| Thickener Tank | Sedimentation of contaminated fines; clear water overflow recycled |
| Filter Press | High-pressure dewatering of sludge into solid filter cake |
Key Engineering Decisions
- Modular containerization — All units fit in standard 20ft/40ft shipping containers, enabling sea freight and rapid on-site assembly within 3–5 days
- DCS + 5G IoT — Distributed control system with cloud monitoring; operators track real-time throughput, water quality, and equipment health from a central tablet
- Chemical dosing flexibility — Surfactants, pH adjusters, or chelating agents can be injected at multiple points depending on contaminant chemistry
About Desen Environmental
Zhengzhou Desen Environmental Technology Co., Ltd. is a National High-Tech Enterprise headquartered in Zhengzhou High-Tech Zone, Henan, China. With over 30 years of manufacturing heritage and a dedicated focus on environmental equipment since 2010, Desen has delivered 1,000+ projects across 100+ countries, serving 385+ renowned clients with a >98% satisfaction rate. R&D partnerships include Zhengzhou University, Henan University of Technology, and the Chinese Academy of Geological Sciences, plus technology alliances with leading environmental enterprises from Germany and Finland.
Phone: +86-371-61937711 | Web: www.materialwashing.com
