Water & WastewaterDrainage Solutions
Specialized drainage systems for water treatment and wastewater facilities. Chemical-resistant, high-capacity solutions for filter buildings, pump stations, and process areas.
Water Treatment Drainage Challenges
Water and wastewater facilities require specialized drainage for chemical exposure, high flows, contamination prevention, and corrosive environments.
Chemical Exposure
Treatment chemicals including chlorine, fluoride, caustic soda, and coagulants attack standard drainage materials. Chemical-resistant systems are essential throughout the facility.
High Flow Volumes
Filter backwash, basin draining, and process operations generate large water volumes. Drainage systems must handle peak flows without flooding process areas.
Contamination Prevention
Potable water facilities must prevent any possibility of contamination. Air gaps, backflow prevention, and proper system separation are critical design requirements.
Corrosive Environment
Constant moisture, chemical vapors, and chlorinated water create highly corrosive conditions. All materials must resist long-term corrosion in these environments.
Water Treatment Drainage by Area
Each zone of a water treatment facility has specific drainage requirements. Proper zoning ensures safety, compliance, and operational efficiency.
Filter Gallery
High-capacity trench drains, chlorine resistant, sized for backwash flows
Size for peak filter backwash rates. Capture wash water along full gallery length.
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Chemical Feed / Storage
Chemical-resistant materials, containment drainage, spill capture
Match materials to specific chemicals. Secondary containment required.
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Pump Station
Floor drains with sumps, leak capture, wash-down capability
Return drainage to process or proper disposal. Prevent cross-contamination.
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Disinfection Area
Chlorine-resistant materials, CPVC or HDPE, vapor-resistant
Highest chlorine exposure zone. Premium corrosion resistance required.
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Sludge Handling
Abrasion-resistant, heavy-duty, easy cleaning access
Handle thick sludge materials. Include wash-down connections.
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Laboratory
Chemical-resistant, neutralization capability, emergency shower drainage
Handle laboratory reagents. May need pretreatment before discharge.
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Water Treatment Drainage Products Compared
Compare chemical-resistant drainage systems for water and wastewater treatment facilities.
Dura Slope HDPE
Load Class: C-DPre-sloped HDPE channel system with excellent chemical resistance. Handles chlorinated water, treatment chemicals, and corrosive environments.
Best For:
- Filter galleries
- Process buildings
- General facility drainage
Considerations:
- Good chemical resistance
- Cost-effective solution
CPVC Drainage Systems
Load Class: B-CChlorinated PVC systems for disinfection and high-chlorine areas. Superior resistance to chlorine compounds and oxidizing chemicals.
Best For:
- Disinfection areas
- Chlorine contact zones
- High-chlorine environments
Considerations:
- Premium cost
- Excellent chlorine resistance
316L Stainless Steel
Load Class: C-DPremium stainless steel drainage for water treatment facilities. Good corrosion resistance with excellent mechanical durability.
Best For:
- Pump stations
- Process buildings
- Equipment rooms
Considerations:
- Monitor in high-chlorine areas
- Excellent durability
PowerDrain S200
Load Class: CPolymer concrete channel for outdoor and utility areas. Good chemical resistance for general facility applications.
Best For:
- Outdoor process areas
- Utility buildings
- Vehicle access areas
Considerations:
- Good for general use
- Not for aggressive chemicals
Polypropylene Systems
Load Class: B-CPolypropylene drainage for laboratory and chemical storage areas. Broad chemical resistance for diverse treatment chemicals.
Best For:
- Laboratory areas
- Chemical storage
- Aggressive chemicals
Considerations:
- Specialty manufacturer
- Excellent chemical resistance
Heavy-Duty Floor Drains
Load Class: C-DIndustrial floor drains for pump stations and sludge handling areas. Heavy-duty construction for demanding water treatment applications.
Best For:
- Pump stations
- Sludge handling
- Equipment rooms
Considerations:
- Multiple configurations
- Proven durability
| Product Line | Width | Load Class | Material | Chlorine Resistant | Pre-Sloped | High Purity | Corrosion Resistant | Heavy-Duty | Chemical Resistant | Acid Resistant | Weldable | Sizes | Sediment Bucket | Best For | Considerations |
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| 6-12" | C-D | HDPE |
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Specialty CPVC Drainage SystemsClass B-C | 4-8" | B-C | CPVC |
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| 4-12" | C-D | 316L SS |
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| 8" | C | Polymer Concrete |
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Specialty Polypropylene SystemsClass B-C | 4-8" | B-C | Polypropylene |
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| C-D | Cast Iron/SS | 6-12" |
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Specifications may vary by model. Consult manufacturer documentation for exact specifications. Load ratings require proper installation with concrete encasement per manufacturer guidelines.
Key Installation Considerations
Water treatment drainage requires careful material selection, contamination prevention, and proper capacity sizing.
Chemical Compatibility
Identify all chemicals used in treatment processes and verify drain material compatibility. Chlorine, fluoride, caustic soda, and coagulants each have specific requirements. Use manufacturer resistance charts.
Cross-Contamination Prevention
Design systems to prevent any possibility of contaminating potable water. Air gaps required between water supplies and drains. Process drains separate from sanitary. Backflow prevention essential.
High-Flow Capacity
Size drainage for peak filter backwash and basin draining operations. Calculate expected flow rates from process operations. Provide adequate channel capacity and outlet sizing.
Containment Requirements
Chemical storage areas require secondary containment per regulations. Containment drains lead to sumps, not direct discharge. Size for 110% of largest container capacity.
Corrosion Resistance
Water treatment creates highly corrosive environments. Chemical vapors and chlorinated water attack many materials. Select premium corrosion-resistant products for long service life.
Maintenance Access
Design for easy inspection and cleaning access. Include adequate cleanouts. Plan maintenance around plant operations. Removable grates allow channel inspection.
Explore Product Lines for Water Treatment Drainage
Water Treatment Drainage FAQ
Common questions about drainage systems for water and wastewater treatment facilities.
Chemical storage and feed areas require corrosion-resistant drainage to handle chlorine compounds, fluoride, caustic soda, and other treatment chemicals. HDPE, polypropylene, or specific stainless steel grades are common. Containment is required for chemical storage. Neutralization may be needed before discharge.
Filter buildings need high-capacity drainage to handle filter backwash operations. Trench drains along filter galleries capture wash water. Stainless steel or polymer systems resist the chlorinated water. Size drains for peak backwash flow rates.
Pump stations need floor drains to capture leakage and wash-down water. Sumps with pumps return drainage to the process. Wet wells require specialized drainage design. All drains must prevent cross-contamination in potable water facilities.
Chlorine contact and disinfection areas require chlorine-resistant materials. CPVC, HDPE, and specific stainless steel grades resist chlorine attack. Standard PVC and carbon steel corrode quickly. Fiberglass-reinforced plastic (FRP) is also commonly used.
Water treatment facilities must prevent wastewater from contaminating potable water systems. Air gaps are required between potable water supplies and drains. Process waste drains must be separate from sanitary systems. Backflow prevention is essential.
Sludge handling areas need heavy-duty drains that resist abrasion and handle thick materials. Floor slopes should direct flow to drains. Wash-down connections help clear residual sludge. Consider heated drains in cold climates to prevent freezing.
Most water treatment facilities need Class C ratings for personnel and light equipment traffic. Areas with heavy equipment or chemical delivery may need Class D. Outdoor areas with vehicle access may need higher ratings. Verify expected traffic loads.
Water quality laboratories need chemical-resistant drainage for sample analysis areas. Acid-resistant materials handle reagents. Cup sinks and emergency showers need adequate drainage. Some waste may require neutralization before discharge.
Planning a Water Treatment Drainage Project?
Get expert guidance on chemical-resistant drainage systems for water and wastewater treatment facilities of all sizes.