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Related Experiment Videos

Upgrading the conventional grease trap using a tube settler.

W Chu1, F L Ng

  • 1Department of Civil & Structural Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong. cewchu@polyu.edu.hk

Environment International
|May 11, 2001
PubMed
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Upgrading traditional grease traps with tube settlers is a cost-effective solution for restaurants and food industries. This enhancement significantly improves oil/grease and chemical oxygen demand (COD) removal, ensuring compliance with effluent standards.

Area of Science:

  • Environmental Engineering
  • Wastewater Treatment Technologies

Background:

  • Grease traps are essential in Hong Kong's food industries to manage oil and grease discharge.
  • Existing grease traps require upgrades to meet increasingly stringent future effluent standards.

Purpose of the Study:

  • To evaluate the effectiveness of upgrading conventional grease traps by incorporating tube settlers.
  • To assess the impact of tube settlers on chemical oxygen demand (COD) and oil/grease removal efficiency.

Main Methods:

  • Installation of tube settlers within traditional grease trap designs.
  • Performance evaluation based on oil/grease and COD removal rates.
  • Analysis of effluent quality under peak flow conditions.

Main Results:

Related Experiment Videos

  • Tube settlers improved oil/grease removal efficiency by 8-10% compared to conventional designs.
  • Significant enhancement in COD removal was observed with minimal hydraulic detention time.
  • Upgraded traps ensured acceptable effluent quality even during peak flowrates.

Conclusions:

  • Integrating tube settlers is a feasible and economical method for upgrading grease traps.
  • The enhanced design effectively polishes effluent, meeting future discharge requirements.
  • Proposed mathematical models can aid in optimizing grease trap design with tube settlers.