Constructing new marine settlements
Home / Special Construction Plan for Aquaculture Protection Using Silt Curtains
Project Background And Objectives
Aquaculture farms require high water quality. Sediment intrusion during dredging can harm fish, shrimp and shellfish. Silt curtains isolate suspended solids and protect the farming environment.
Construction Conditions
Depth 2–4m in aquaculture zone.
Water quality: DO ≥5mg/L, suspended solids ≤30mg/L.
Deployment And Preparations
A fully enclosed integral silt curtain is installed 30-50 meters outside the breeding area.
Add a semi-enclosed, integrated silt curtain around the construction vessel.
Monitoring stations for DO, turbidity and salinity.
Construction Procedure
STEP 01
Surveying:
Mark aquaculture boundaries.STEP 02
Assembly:
connecting curtain body, sinking sandbags, connecting anchor rope and iron anchor and positioning float of iron anchor.STEP 03
Deployment:
It is towed to the construction site by a flatbed barge. The silt curtain adopts an integral structure, 20m/unit and is assembled and launched into the water in units. The curtain body is fixed in sections with iron anchors and anchor ropes and then iron anchor positioning floats are deployed.STEP 04
Inspection:
Check the stability and integrity of the curtain in real time.Quality Control
- The anti-fouling curtain body sinks to 1.0-4.0m below the water surface.
- Daily water monitoring; stop work if DO <4.5mg/L.
Safety And Environmental Protection
- No waste discharge into farming zone.
- Reduce noise and lighting at night to avoid disturbance.
Silt Curtains: Environmental Compliance & Efficiency Challenges
Pain Point 01
Poor Design Leads To Low Pollution Control, Risk Of Penalties
Customer Concern:
Conventional silt curtains use mixed fabrics sewn together, with overall strength <50% of base material. They fail under wave impact, leading to breakage, excessive turbidity, fishery disputes, fines and suspension risks. Sediment interception is often <60%.
Solution:
Useing high-strength permeable fabric in an integrated structure. Curtain strength = 100% of base fabric. With sandbag ballast (non-corrosive), sediment interception reaches >90%, while dissipating wave energy and ensuring compliance (permeability coefficient 1.5×10⁻³ m/s).Pain Point 02
Poor Durability, Frequent Replacements
Customer Concern:
Standard silt curtains lack UV resistance and seawater durability, lasting less than 1 year. This requires annual replacement, raising offshore operation costs and delaying schedules.
Solution:
Use anti-aging integrated silt curtains, durable for 3 years in seawater, cutting life-cycle cost by 50%.Constructing new marine settlements
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