Activated

Incorrect. This describes a different method of wastewater treatment.

Correct! This is the core concept of activated wastewater treatment.

Incorrect. This is a method used in some cases, but not the primary definition of "activated".

Incorrect. These are different methods of wastewater treatment.

Correct! These are the two primary methods mentioned in the text.

Incorrect. These are different methods of wastewater treatment.

Correct! Biofilm systems offer both energy savings and reduced sludge production.

Incorrect. While biofilm systems are effective, they are not specifically known for heavy metal removal.

Incorrect. Both methods have their pros and cons in terms of efficiency and speed.

Incorrect. This is a significant advantage of fixed film systems.

Correct! Fixed film systems actually reduce sludge production, making it an advantage.

Incorrect. This is another key advantage of fixed film systems.

Correct! JDV Equipment Corp. is specifically mentioned for their expertise in this field.

Incorrect. This is not a company mentioned in the text.

Incorrect. This is not a company mentioned in the text.

This is a sample solution. Your answer might vary depending on your reasoning and design choices.

Proposed Design:

To address the high organic matter concentration and space limitations, we'll utilize a compact, high-efficiency fixed film system with a combination of media types:

• Media:

  • Ceramic media: High surface area, porous structure, and durability make ceramic media ideal for biofilm growth. We'll use a combination of cylindrical and honeycomb-shaped ceramic media to maximize surface area within a limited space.
  • Plastic media: Lightweight and easy to handle, plastic media provides additional surface area for biofilm formation. We'll use a combination of flat sheets and corrugated plastic media to create variations in flow patterns.

• Flow Direction:

  • Wastewater will enter the system at the top and flow downwards through the media bed. This allows for a gravity-driven flow, reducing energy consumption.
  • We'll use a series of baffles within the media bed to create a zig-zag flow path, maximizing contact time with the biofilm and ensuring even distribution of wastewater.

• Aeration:

  • To provide sufficient oxygen for the biofilm, we'll use a combination of methods:
    • Diffused aeration: Small air bubbles will be introduced at the bottom of the media bed, promoting efficient oxygen transfer to the biofilm.
    • Surface aeration: Aeration will also be applied at the surface of the media bed to provide additional oxygen for the biofilm and promote evaporation of volatile compounds.

• Justification:

  • High efficiency: The combination of ceramic and plastic media with a high surface area will create a vast habitat for biofilm growth, ensuring efficient organic matter breakdown.
  • Reduced sludge production: Biofilm systems inherently produce less sludge than activated sludge systems, reducing disposal costs and environmental impact.
  • Compact design: The use of a combination of media types and a well-designed flow path allows for a compact system that can fit within the limited space available.
  • Energy savings: By utilizing gravity flow and optimizing aeration, we'll minimize energy consumption compared to traditional activated sludge systems.