Designing a wastewater treatment plant requires careful consideration of flow characteristics, pollutant loads, regulatory requirements, and site constraints.

Design Fundamentals

Flow Characterization

• Average flow rate (dry weather)
• Peak flow rates (daily and hourly)
• Flow variations and patterns
• Infiltration/inflow assessment

Load Characterization

BOD, COD, TSS, ammonia, nitrogen, phosphorus, and any specific industrial contaminants. Consider seasonal variations.

Treatment Process Selection

Small Plants (< 500 m³/day)

Sequencing Batch Reactor (SBR), Package plants, or extended aeration. Simple operation, lower capital cost.

Medium Plants (500-10,000 m³/day)

Conventional activated sludge, SBR, or MBBR systems. Good balance of efficiency and cost.

Large Plants (> 10,000 m³/day)

Advanced treatment trains with primary clarification, biological treatment, and tertiary polishing.

Design Standards

Design should comply with applicable standards: German ATV/DVWK, US EPA, or local regulatory requirements.

Documentation Requirements

• Process flow diagram (PFD)
• Piping and instrumentation diagram (P&ID)
• Hydraulic profile
• Equipment specifications
• Performance guarantees

Feiran EP Engineering Services

We provide complete wastewater treatment plant design and supply for projects worldwide.

Email: sale@yixingenviroequipment.com