55 طن/اليوم مرفق سماد الحمأة البلدية

Case Study | DAYI COUNTY, CHENGDU, SICHUAN

1 . Project Background

Dayi County has intensified rural and urban sanitation upgrades in recent years. With wastewater-plant throughput climbing, more than 50 t of dewatered sludge were produced daily—high moisture, pathogens, odour. To hit the “reduction, detoxification, and recycling” targets set by the local ECO Bureau, the county launched a sludge-composting initiative.

2 . Jiesonglin Solution

In H1 2024 the county government teamed with a local environmental firm to deploy nine 300 m³ e-PTFE membrane composters from Jiesonglin Technology, creating a centralised sludge-fermentation park:

1. Blend sludge with straw and rice husks to adjust C/N ratio
2. Load mixture via wheel loader into compost cells
3. Cover piles with high-permeability nanomembrane
4. Run sealed, high-temperature aerobic fermentation (auto temp & humidity control)
5. Capture & treat leachate in closed system

3 . Quantifiable Results

4 . Government Testimonial

“The membrane-composting project not only solved our sludge bottleneck but also set a benchmark for Dayi’s green transition. The technology is stable, easy to maintain, and ready for rollout across more townships.”
— Director, Dayi County Housing & Urban-Rural Development Bureau