Products Description
Waste Sorting and Resource Utilization Process
In a sustainable Waste-to-Energy (WtE) ecosystem, the efficiency of energy recovery is directly determined by the quality of the feedstock. Henan Guoxin Machinery specializes in the two most critical operational phases of a WtE plant: Front-end Mechanical Pre-treatment and Comprehensive Leachate Solutions.
We bridge the gap between raw Municipal Solid Waste (MSW) and high-efficiency thermal conversion, ensuring that the downstream incineration process achieves maximum ROI while meeting the strictest global emission standards.
Waste-to-Energy Plant Equipment Interconnection Diagram
Waste-to-Energy Plant Process Flow Diagram
I. Front-end Pre-treatment: Optimizing Combustion Efficiency
Raw MSW is inherently inconsistent. Our mechanical sorting systems act as the “Quality Gatekeeper” for the incineration furnace. By integrating our pre-treatment line, we help WtE plants achieve the four core objectives: Resource Recovery, Volume Reduction, Harmless Treatment, and Enhanced Economic Benefit.
Our Core Pre-treatment Flow:
-
Reception & Homogenization: MSW is weighed and discharged into negative-pressure storage pits. Our heavy-duty grab cranes and Bag Openers liberate the waste, ensuring 100% downstream separation efficiency.
-
Mechanical Liberation: Utilizing Heavy-duty Plate Feeders and Shredders, we reduce the waste to a uniform particle size, significantly improving the stability of the incineration bed.
-
Advanced Sorting for RDF Production:
-
Trommel Screens: Separate high-moisture organic fines from combustible solids.
-
Air Density Separators: Isolate high-calorific light fractions (plastics, paper, textiles).
-
Magnetic Separators: Extract ferrous metals to protect the furnace grate and create secondary revenue.
-
-
Result: The resulting RDF (Refuse-Derived Fuel) delivers a consistent calorific value, reducing slagging and fluctuations in boiler steam production.
II. Supporting the Incineration Cycle: Technical Synergy
Waste Incinerator
Steam Turbine Unit
Dry and Semi-Dry Desulfurization and Denitrification Treatment
While our focus is pre-treatment, our solutions are designed to synergize perfectly with advanced Two-Stage Grate Incinerators (Reverse-push and Forward-push zones).
-
Combustion Optimization: By providing pre-sorted waste, we ensure the furnace maintains a stable temperature between 850°C and 1050°C. This precision is vital for guaranteeing a flue gas residence time of >2 seconds, which is the primary defense against dioxin formation.
-
Residue Management: Our systems facilitate the separation of Bottom Ash (Slag) and Fly Ash. We provide the stabilization and solidification technology (using cement and chelating agents) required to ensure fly ash meets safe disposal standards (e.g., GB16889-2008).
-
Odor Control Synergy: We design pit ventilation systems that utilize odorous air (CH4, H2S) as primary combustion air, thermally decomposing odors at 1050°C within the furnace.
III. Leachate Treatment: The Environmental Life-Support System
Leachate Treatment Flow Chart
Leachate management is the most complex environmental challenge for any WtE facility. Guoxin provides a robust, multi-stage treatment chain to handle high-COD, high-ammonia nitrogen effluent:
Our Specialized Process: Pre-treatment + UASB + MBR + NF/RO
-
UASB (Upflow Anaerobic Sludge Blanket): High-efficiency organic degradation.
-
MBR (Membrane Bioreactor): Precision biochemical treatment for nutrient removal.
-
NF/RO (Nanofiltration & Reverse Osmosis): Final membrane polishing to ensure treated water meets GB8978-1996 standards or is fit for industrial reuse within the plant (cooling/greenery).
FAQ
Q: Why is pre-sorting necessary for a Waste-to-Energy plant?
A: Raw MSW contains inert materials (glass, stones) and high-moisture organics that lower combustion temperature and damage furnace grates. Our pre-sorting removes these hazards, producing a standardized RDF that stabilizes power output and reduces maintenance costs for the boiler and flue gas systems.
Q: How does Guoxin help in suppressing Dioxin emissions?
A: Dioxin control starts with combustion stability. By providing a homogenized feedstock, we help the furnace maintain a steady temperature above 850°C. Furthermore, we support the integration of flue gas purification technologies—including SNCR, activated carbon adsorption, and baghouse filters—to ensure emissions meet EU standards (<0.1ng/Nm³).
Q: Can your leachate system handle the high concentrations found in MSW pits?
A: Yes. Our UASB+MBR+NF technology is specifically designed for high-strength leachate. It handles the extreme COD and BOD fluctuations common in fresh waste pits, ensuring the plant remains in constant environmental compliance.
Q: What is the benefit of the Two-Stage Grate system you support?
A: The combination of reverse-push and forward-push zones ensures the waste is thoroughly dried, ignited, and burnt out. When fed with our pre-sorted RDF, this system achieves near-total carbon burnout, leaving only inert slag suitable for brick-making.
Expert Engineering for Global WtE Projects. From municipal sorting to complex leachate filtration, Henan Guoxin Machinery is your partner in building a cleaner, more profitable energy future.
[Consult with our WtE Process Engineers] [Download MSW Sorting & Leachate Technical Guide]