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Related Experiment Video

Updated: Jan 28, 2026

Use of a Battery of Chemical and Ecotoxicological Methods for the Assessment of the Efficacy of Wastewater Treatment Processes to Remove Estrogenic Potency
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Combined UMBAF-MBAF process treating detergent wastewater.

Guixia Ji1, Yanhong Zhou1, Buxuan Zhou2

  • 1School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, China.

Water Environment Research : a Research Publication of the Water Environment Federation
|February 23, 2019
PubMed
Summary
This summary is machine-generated.

A novel combined upflow multimedia biological aerated filter (UMBAF) and multimedia biological aerated filter (MBAF) effectively treats detergent wastewater. This process achieved high removal rates for chemical oxygen demand (COD), linear alkyl benzene sulfonate sodium (LAS), and total phosphate (TP).

Keywords:
combined UMBAF-MBAFdegradation modeldetergent wastewaterfiltration ratemulti-filter

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Area of Science:

  • Environmental Engineering
  • Wastewater Treatment Technologies
  • Applied Microbiology

Background:

  • Detergent wastewater poses significant environmental challenges due to its complex composition.
  • Conventional treatment methods may struggle with efficient removal of specific pollutants like linear alkyl benzene sulfonate sodium (LAS) and phosphates.
  • There is a need for advanced, integrated systems to improve the efficacy of detergent wastewater treatment.

Purpose of the Study:

  • To investigate the efficacy of a combined upflow multimedia biological aerated filter (UMBAF) and multimedia biological aerated filter (MBAF) system for treating detergent wastewater.
  • To determine the optimal operating conditions, including filtration rate and air-to-water ratio, for the combined system.
  • To analyze the removal kinetics of key pollutants such as chemical oxygen demand (COD), LAS, and total phosphate (TP).

Main Methods:

  • A combined UMBAF-MBAF reactor system was designed and operated for detergent wastewater treatment.
  • Experiments were conducted to identify the optimal filtration rate (1.4 m/hr) and air-to-water ratio (2:1).
  • Pollutant concentrations (COD, LAS, TP) were monitored, and removal efficiencies were calculated. Kinetic models for COD and LAS removal were established.

Main Results:

  • The combined UMBAF-MBAF system achieved high average removal rates: 91.4% for COD, 88.5% for LAS, and 40% for TP.
  • Stable effluent concentrations were recorded at 35.0 mg/L for COD, 7.0 mg/L for LAS, and 4.4 mg/L for TP.
  • The UMBAF unit was identified as crucial for TP removal, and kinetic models (C = C0 e^-(ah+b) for COD, L = L0 e^-(mh+n) for LAS) were developed.

Conclusions:

  • The integrated UMBAF-MBAF process is a highly promising technology for effective detergent wastewater treatment.
  • The established kinetic models provide valuable tools for predicting treatment efficiency and optimizing the design of biological aerated filters for organic pollutants.
  • This study demonstrates the potential of combined biological filtration systems for addressing complex industrial wastewater challenges.