FAQs
Q: Can your systems handle high-solid slurries or viscous suspensions?
Yes. Our filtration–washing–concentration systems are designed for high-solid-content slurries, ensuring efficient separation and reliable cake discharge.
Q: What is the filtration precision of your products?
Our filters can achieve micron- and submicron-level separation, starting from 0.1 μm, with consistent performance across cycles.
Q: Are Dongou filter elements regenerable?
Yes. They support multi-cycle regeneration through backflushing, water/air cleaning, and chemical treatment, reducing O&M costs.
Q: What are the operating temperature and chemical compatibility ranges?
Our polymer-based sintered filters typically operate between –40°C to 180°C and are resistant to a wide pH range and many corrosive media. For extreme conditions, we can design special materials or protective coatings.
Q: Can your systems ensure stable product quality?
Yes. We provide precise particle size control, uniform cake washing, and consistent separation efficiency to meet demanding process requirements.
Q: How do your systems reduce operating costs compared to conventional filtration methods?
Our regenerable filter elements, modular spare parts, and lower energy consumption reduce consumable usage, downtime, and overall OPEX.
Q: Are your filter elements reusable?
Yes. They are designed for multiple cleaning and regeneration cycles, significantly extending service life.
Q: What is the expected lifespan of your filter media?
Depending on process conditions, service life can exceed several years with proper maintenance and regeneration.
Q: Do your products meet international safety and quality standards?
Yes. We are certified with ISO 9001, ISO 14001, ISO 45001, ISO 50001, hold pressure vessel licenses (e.g., ASME, CE), and ensure compliance with global regulations.
Q: How do you ensure product quality?
Each unit undergoes strict material traceability, in-process inspections, and final testing. We also perform outbound sampling inspections, and every batch is fully traceable through our quality management system.
Q: Are your filters safe for sensitive industries like pharmaceuticals or food?
Yes. Our materials are non-toxic, PFAS-free, and comply with hygiene and safety requirements in regulated industries.
Q: What is your typical delivery time?
Standard equipment is delivered in 6–10 weeks. Customized systems may take 12–20 weeks depending on design complexity.
Q: Do you provide installation and commissioning support?
Yes. We offer on-site guidance, operator training, and commissioning support for both domestic and international projects.
Q: What after-sales services are available?
We provide spare parts, technical troubleshooting, remote support, and long-term maintenance services.
Q: How quickly do you respond to service requests?
Our technical team responds within 24 hours, and overseas customers can access remote assistance for urgent issues.
Q: How do you ensure reliable delivery?
With two specialized plants (46,000 m² pressure vessel and 21,000 m² filter media), we combine heavy fabrication and precision element production under one system. This end-to-end capability ensures on-time delivery and consistent quality for global clients.
Q: Do you provide pilot testing before purchase?
Absolutely. We offer lab-scale and pilot-scale trials using your actual samples to validate system performance and reduce risks.
Q: Can your systems be integrated into existing production lines?
Yes. Our modular designs and flexible controls make integration straightforward and scalable for future expansion.
Q: Do you accept OEM or joint development projects?
Yes. We welcome OEM cooperation and joint R&D projects with industry partners and academic institutes.
Q: Do you have references from my industry?
Yes. Our solutions are applied in metallurgy, chemicals, battery materials, pharmaceuticals, food processing, and environmental engineering. We can provide case references upon request.
Q: Can Dongou handle large or highly customized projects?
Yes. Our integrated production bases and R&D-driven workflows allow us to execute complex turnkey projects — from pilot-scale validation to full-scale system delivery — while ensuring scalability and flexibility.