[Study on dewatering of activated sludge under applied electric field].
This engineering study investigated factors affecting electro-dewatering of activated sludge under a horizontal applied electric field. It reports optimal performance without altering sludge pH or conductivity and finds that CPAM conditioning improves and accelerates dewatering. The authors provide operating conditions (field strength, plate distance, timing, and CPAM dose) associated with the highest reported dewatering rate and reduced moisture content.
Key points
- The best electro-dewatering effect was reported at the original sludge pH (6.93) and conductivity (1.46 mS/cm).
- CPAM conditioning was reported to increase dewatering rate by 30%β40% and speed up the process.
- Conditioned sludge reached 83.12% dewatering in 60 minutes, while original sludge reached 75.31% after 120 minutes.
- Delaying the application of the electric field was reported to inhibit the electro-dewatering rate.
- The reported optimum conditions included CPAM 9 g/kg, electric field strength 600 V/m, plate distance 40 mm, and 60 minutes dehydration time.
- Under the reported optimum conditions, dewatering approached 85.33% and moisture content decreased from 99.30% to 95.15%.
Referenced studies & papers
Relevant papers in OpenMel
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AI-generated summaries may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.
AI-generated summaries may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.
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