BIOLOGICAL PROCESSES

FEATURES
  • Constant water level
  • Continuous flow
  • Simple operation
  • Superior performance even in low-strength, low-temperature wastewaters common in North America and Europe
  • Adept at processing high-peak hydraulic flows due to storm events
  • Quiescent settling prior to clarification phase
  • Optimized, enhanced biological nutrient removal

ADVANTAGES
  • No need for separate structures
  • Unique flow through system
  • Basin configuration optimized
  • Existing aeration equipment can be used
  • Fully automated control system
  • Better sludge flocculation; no sludge collection mechanisms
  • Low TSS discharge; effective nitrification, denitrification and phosphorus removal

APPLICATIONS
  • Any municipal or industrial wastewater system with effluent requirements ranging from carbonaceous oxidation to enhanced biological nutrient removal
  • Ideal for large scale projects >15,000 m3/day
Click on the image below for a larger view.

One Aqua MSBR® cell at Shenzhen Yantian WWTP. Shown is (1) AquaDDM® mixer with local control station and (2) Air Weirs.

Success Story

OPERATION 

The Aqua MSBR® process incorporates multiple reactor cells to provide a variety of treatment mode alternatives. The design configuration may range from a simple 3-cell configuration that provides oxidation and efficient clarification to a 7-cell configuration that provides enhanced biological nutrient removal. An Aqua MSBR® system will include two sequencing cells and a variable number of specific function cells.


Compact, 7-Cell MSBR System
Superimposed over a Typical Activated Sludge Process

Cells 1 & 7 - Sequencing Cells alternate four Phases. As cell 1 progresses through Phases 1-3, cell 7 will remain in Phase 4 and vice versa.

The four Phases are:
   1 Anoxic Mixing and Mixed Liquor Recycle
   2 Aeration, Mixing and Mixed Liquor Recycle
   3 Pre-settle
   4 Clarification

Cell 2 - Phase Separator Cell designed to concentrate recycled mixed
liquor solids feed stream to the anaerobic cell and promote an
optimal environment to enhance phosphorus release within
the anaerobic cell

Cell 3 - Fermentation Cell designed to increase concentration of
volatile fatty acids (VFAs)

Cell 4 - Anaerobic Cell designed to promote phosphorus release
under optimized conditions

Cell 5 - Anoxic Mixing Cell designed to provide denitrification

Cell 6 - Aerobic Cell designed to provide oxidation of carbonaceous
material, nitrification, and the biological uptake of phosphorus

 

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