Waste-Slurry Environmental Treatment Plan
A complete flow from mud-pond purification to solid-liquid separation, returning clear water to use and leaving a dry cake.
Solution overview
- Application methods
- 旋挖灌注桩施工 / 深基础施工 / 非开挖管线施工
- Problem type
- Waste slurry
Scenario and construction challenges
Shield and pile works generate large waste-slurry volumes: costly haul-away and environmental pressure make on-site separation and water reuse essential.
Challenge 1High haul-away cost
Large volumes at high disposal unit rates eat into project cost and schedule.
Challenge 2Hard to flocculate
Fine particles soak up chemicals, so ordinary flocculants need big doses with unstable results.
Challenge 3Reuse concerns
Supernatant quality fluctuates and must be verified before reuse in make-up.
Complete solution
Each scheme pairs materials with dosing; the table below lists material, role and ratio per step.
| Stage | Material | Function | Ratio / dosage | Working condition | Scope |
|---|---|---|---|---|---|
| Purify | PAM-POOL | Pond pre-settling | 50–100 g/m³ | Waste slurry at 5%–15% solids | Mud-pond pre-settling |
| Flocculate | FLOC-P | Solid-liquid separation | 20–50 g/m³ | pH 6–9 with high suspended solids | Shield / pile waste-slurry separation |
| pH adjust | NAOH caustic soda | Neutralise to spec | To effluent spec | Effluent pH <6 | Neutralise to pH 6–9 |
| Dewater | Filter press / centrifuge | Dry cake for haul-away | — | Stacking area and dewatering plant available | Dry cake for haul-away |
Delivered results
Construction schematic & site photos
Use the schematic and site photos to follow the process and slurry flow; final parameters follow on-site trial results.
Construction schematic
Site photos
Related cases
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