It enables on-site verification of results to promptly meet customer requirements and establish trust.
If on-site demonstration is not possible, sludge can be collected from the client and tested directly at the sole agent’s location.
This approach helps to secure main projects quickly and efficiently.
Demonstrations of the DEMO equipment are the fastest way to validate trust.
It provides continuous hands-on training for sole agent engineers.
DEMO equipment is the most effective, trustworthy, and rapid tool for sole agents to showcase capabilities and secure projects.
The purpose of operating DEMO equipment is to accurately determine only the following three priorities
Additional guarantees such as hourly throughput, SS concentration of filtered effluent, air pressure, SFD operation, belt selection, scraping, cake discharge, and related physical/electrical factors are all covered when the main ELODE equipment is supplied.
The STR (Screw Transfer - see photo) provided with the DEMO equipment is exclusively for low-viscosity organic sludge and digested sludge. For various types of anaerobic or activated sludge, especially those with organic or adhesive characteristics, STR should not be used. Sticky sludge clumps together, preventing uniform distribution in the desired width and thickness. Therefore, instead of installing STR, steps are built at the front of the DEMO equipment to allow manual sludge feeding.
NO GOOD | GOOD |
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Before feeding sludge, measure its conductivity. If this check has not been done, it must be performed first. Conductivity should be checked before sludge enters the mixing tank or thickener. If the conductivity exceeds 10,000 μS, reduce the voltage to below 50V. The ideal conductivity range is between 3,000–8,000 μS. Sludge with conductivity over 8,000 μS may be highly viscous or organic, so extra care is needed.
Ensure that ELODE’s warming-up process has been running for 30 minutes, with the belt thoroughly wet and SCR activated. Prepare fresh sludge that has undergone primary dewatering and conduct a trial by feeding a small 1–2 kg sample. If the dehydration quality is good and there are no issues with the amp and DC settings, proceed with full-scale feeding.
Use a bucket to measure the weight and moisture content (DS%) of each sample. Feed the sludge onto the belt at an average speed of 20–30 Hz (1.2–1.8 meters/min) with a DC setting of 60–80V, sludge thickness of 8–12 mm, and width of 200–400 mm. During feeding, maintain the drum temperature below 20°C and ensure that the current does not exceed 500A.
SCOOP & SLUDGE BUCKET | WEIGHT & DS% CHECK | During Sludge-In-DC, AMP, DRUM TEMP check |
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When thin layers of highly conductive or organic sludge are fed, Coulomb heating due to electro-osmosis and rapid electrode movement may occur. This heat can cause the sludge to adhere to the surface, making cake removal more challenging. In such cases, adjust the sludge thickness, drum pressure, scraper pressure, belt tension, and DC voltage to find the optimal settings. Although initially challenging, finding the ideal settings becomes easier with experience.
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