Hazardous Waste Pretreatment Solutions (SMP)
Automatic shredding, mixing, and pumping systems for safer handling and co-processing preparationThe SMP (shredding–mixing–pumping) is our automatic solution for pretreating industrial and hazardous waste. It was developed to handle waste streams in a controlled way, with the main steps running automatically rather than relying on constant manual work. Since routine handling is kept within the SMP system, operators do not need to deal with hazardous materials as directly. That makes daily work safer and helps keep operation stable.
The SMP co-processing pretreatment system is suitable for hazardous wastes such as waste paint, fly ash, and other materials listed in the national hazardous waste catalogue. In general, waste is treated as hazardous when it shows one or more risk characteristics, including corrosivity, toxicity, flammability.
- Materials with one or more hazardous characteristics, such as corrosivity, toxicity, flammability, reactivity, or infectious risk, are treated as hazardous waste.
- Some materials may still be managed as hazardous waste when they can harm the environment or human health, even if the risk is not obvious at first.
- Grab bucket and hoist (feeding)
- Solid waste
- Waste liquid and semi-solid hazardous waste
- Shredding
- Mixing
- Pump transfer
- Kiln injection lance (nozzle)
- Incineration kiln
- Pallets, bulk bags, drums, or loose waste are lifted in by a grab bucket or hoist and sent into a nitrogen-sealed chamber
- Nitrogen is injected into the chamber first to lower the oxygen level inside
- The waste then drops into a hopper that has already been purged with nitrogen
- The shredder starts and performs size reduction
- After shredding, the material is fed into the mixer
- Waste liquid, sludge, or other compatible waste streams are added in the mixer, and the material is blended until it reaches a pumpable consistency
- The mixed waste is fed into a single-cylinder plunger pump
- The pump transfers the mixture through a high-pressure pipeline to the rotary kiln injection point
-
SMP System
The SMP (shredding–mixing–pumping) system is used to pretreat and homogenize hazardous waste before incineration. SMP systems include a shredder, a mixer, a single-cylinder plunger pump, and a kiln injection lance (nozzle). A nitrogen protection system is also used to lower oxygen levels inside the process area, which helps improve operating safety.
-
Single-Cylinder Plunger Pump
This pump is used to transfer low-moisture waste, solid or semi-solid hazardous materials, and shredded mixtures that may still contain larger pieces. A twin-screw feeder at the inlet helps push the material into the pump steadily. The shredding elements inside the pump work with the plunger and cylinder to further break down oversized pieces, which makes pipeline transfer smoother and reduces the risk of blockages.
- Helps reduce wear on the incineration line and can extend service life (often around 20%)
- Helps the kiln run more steadily and can increase treatment capacity (often around 20%)
- Less buildup and fewer disruptions can reduce kiln maintenance and improve uptime
- A steadier process can lower additive use in the flue gas treatment stage
- Since the process runs automatically, less direct handling is needed, which improves on-site safety
- The SMP system is designed so one operator can run it