DAF vs Tube Settler: How to Optimize Solid-Liquid Separation for Industrial Wastewater?

The Solid-Liquid Separation Dilemma in Industry

Industrial wastewater often contains complex pollutants:

• Low-density contaminants: Oils, algae, polymer microplastics (common in petrochemical/textile plants)

• High-density particles: Metal hydroxides, silica, precipitated salts (e.g., electroplating/mining wastewater)

Traditional single-process systems face critical limitations:
⚠️ DAF struggles with particles >500 kg/m³ density (40% efficiency drop)19
⚠️ Tube Settlers fail to capture <50μm light flocs (overflow losses up to 25%)8

JUNTAI’s integrated approach combines both technologies for maximum adaptability.

Technical Matrix: DAF vs Tube Settler Performance

JUNTAI Hybrid System: 3-Stage Industrial Solution

1️⃣ Stage 1 - DAF Pre-treatment

• Removes 90% of oils & buoyant solids

• Microbubble generator (10-30μm) with anti-clog nozzles

• Chemical dosing optimization (reduces flocculant use by 40%)

2️⃣ Stage 2 - Tube Settler Polishing

• 60° PP modules with 200mm hydraulic diameter

• Laminar flow design (Reynolds Number <500)8

• Captures residual flocs (20-100μm)

3️⃣ Stage 3 - AI-Driven Control

• Real-time turbidity monitoring adjusts recycle ratio

• Predictive maintenance alerts for scraper mechanisms

Case Study: PCB Manufacturing Wastewater in Guangdong

Client Feedback:
"The hybrid system cut our sludge disposal costs by $12,000/month while meeting GB 8978-1996 standards."