YIHUA German DAF Sedimentation Integrated Machine

1. Project Background

A family-owned meat processing enterprise with a 50-year history in Bavaria, Germany, specializes in high-quality sausages and meat products. With the expansion of production scale, the daily volume of high-concentration organic wastewater generated by the enterprise has increased to 120m³. The main pollutants include high-concentration suspended solids (SS), chemical oxygen demand (COD), fat, oil and grease (FOG), as well as nitrogen and phosphorus nutrients.

In 2023, the German Federal Ministry of the Environment updated the Wastewater Quality Ordinance (AbwV), imposing stricter discharge limits on the food processing industry. The old biochemical treatment system could no longer meet the new environmental standards due to its low treatment efficiency, high energy consumption, and large sludge output. The enterprise faced heavy fines and the risk of production suspension, urgently needing an efficient, stable, and CE-certified integrated solution.

The technical team of YIHUA Environmental Protection conducted on-site surveys and water sample analysis, and tailored a treatment process centered on the YIHUA DAF Sedimentation Integrated Machine for the client. This equipment integrates high-efficiency dissolved air flotation (DAF) and inclined tube sedimentation technologies, specifically designed for the efficient separation of emulsified oil, suspended solids, and colloidal substances in food processing wastewater.

2. Solution

Core Equipment: YIHUA DAF Sedimentation Integrated Machine

Treatment Process: Grille → Equalization Tank → DAF Sedimentation Integrated Machine → Advanced Filtration → Discharge Up to Standard

Technical Highlights:

• High-Efficiency Dissolved Air System: Adopts a patented micro-bubble generator with bubble diameters of only 10-30μm, significantly improving the adsorption efficiency of pollutants, with SS removal rate stably above 95%.

• Integrated Structure: Integrates functions such as flotation, sedimentation, scum scraping, and sludge discharge into one unit, reducing the footprint by 40% compared to traditional processes and significantly lowering civil engineering costs.

• Intelligent Control System: Equipped with a PLC fully automatic control system and an IoT remote monitoring platform, enabling 24-hour unattended operation and supporting local European engineers to perform fault diagnosis and parameter optimization via the cloud.

• CE Certification: All electrical and safety components comply with EU CE standards, ensuring the equipment's compliance and safety in the European market.

3. Project Outcomes

Since its official commissioning in March 2024, the project has operated stably, with all effluent indicators exceeding German and EU discharge standards, bringing significant environmental and economic benefits to the client:

• Water Quality Compliance: Effluent COD is stable below 50mg/L, SS is below 8mg/L, and FOG removal rate reaches 98%, fully meeting the requirements of the Wastewater Quality Ordinance (AbwV) and the EU Urban Waste Water Treatment Directive.

• Cost Optimization: Operating energy consumption is reduced by 25%, sludge output is reduced by 30%, saving the client approximately 120,000 euros in annual operating costs and sludge disposal fees.

• Environmental Benefits: Reducing annual COD emissions by approximately 18 tons and SS emissions by 2.5 tons, making a positive contribution to local water body protection.

• Client Testimonial: "YIHUA's equipment not only helped us overcome environmental barriers, but its stable performance and professional service have also given us a new understanding of Chinese environmental protection equipment. We have already recommended YIHUA to our industry partners." — CEO of the enterprise