Products

OXIWORKS-FLOATING FINE BUBBLE DIFFUSER

How Oxiworks® Floating Fine-Bubble Aeration Works

Air from the blowers is delivered through the main air header to each floating lateral.

From there, the air travels down flexible drop hoses into the Oxiworks® diffuser assembly, where it is released through high-efficiency fine-bubble tubular silicon membranes.

These membranes produce uniform 1 mm fine bubbles, ensuring excellent oxygen transfer and effective mixing throughout the lagoon.

Moving Aeration Header/Chain Make a Difference

The Oxiworks® system is engineered so that each floating lateral header—with its suspended diffuser assemblies—can move freely across the water surface.

This controlled movement provides several major performance advantages:

• Maximized oxygen transfer: the floating diffusers naturally migrate toward areas with lower dissolved oxygen, improving oxygen distribution and increasing overall system efficiency.
• Superior mixing coverage: Because the laterals oscillate over a wide area, they mix significantly more water volume than fixed aeration systems.
• This movement allows Oxiworks® to reduce required mixing air by up to 30% compared to rigid, floor-mounted diffusers.

Why Choose Oxiworks for Activated Sludge or Lagoon Aeration

Exceptional Aeration Efficiency

• Superior standard oxygen transfer efficiency (SOTE) performance due to fine-bubble production and the moving-header principle.
• Reduced energy use with consistently high-quality effluent.

Low Maintenance and Long Service Life

• Made from durable, corrosion-resistant materials for long-term operation.
• Minimal service requirements and reduced replacement costs.

Environmentally Friendly Materials

• Components are made from recyclable polypropylene and other environmentally responsible materials.

Easy, Non-Disruptive Maintenance

• The floating aeration system is not anchored to the basin floor, allowing maintenance during normal operation.
• Units can be pulled to the surface without draining the lagoon.
• With Oxirise®, diffuser assemblies can be raised effortlessly for inspection and cleaning.

Automatic Backflow Protection

• The system automatically seals if aeration is interrupted, preventing any backflow of sludge or liquid into the diffusers.

Expandable, Modular Design

• Additional diffusers can be easily added to the floating header if more aeration capacity is required.

Complete System Supply — No Hidden Costs

Bioworks provides the entire aeration package, including:

• Diffusers, floating piping, couplings, hoses, clamps, ballast
• Fixation materials (steel cables, shackles, anchors)
• Shore-side termination valve
• All accessories required for complete installation

Professional Installation & Commissioning

• Installation and supervision performed by Bioworks site personnel
• Mechanical performance testing and signed completion certificate upon commissioning
• Continuous process support throughout the plant’s service life.

OXIRISE - Diffuser Automatic Lifting & Maintenance System

Oxirise is an automatic diffuser lifting and maintenance system that allows each individual diffuser assembly to be automatically raised to the water surface using compressed air.

This operation can be performed while the treatment process remains in service, eliminating the need to interrupt normal plant operations.

Dedicated pressure hoses are installed from the basin edge and connected to the floating air header.

Each pressure hose is routed alongside a downcomer hose and connected to the corresponding diffuser air manifold.

When a valve in the distribution box, located at the basin edge, is opened, compressed air is directed to the selected diffuser assembly.

The injected air displaces the water within the diffuser support tubes, creating buoyancy that causes the diffuser to float to the surface.

The Oxirise system provides the dual benefits of automatic diffuser cleaning and simplified maintenance.

As the diffuser assembly rises, the reduction in differential pressure promotes membrane flexing, helping to remove accumulated deposits and restore diffuser performance.

In addition, raising the diffuser to the surface allows operators to safely inspect, clean, and maintain the equipment without draining the basin or requiring specialized access equipment.

The distribution box is supplied with compressed air from common portable air compressors, providing a simple and cost-effective means of operating the diffuser lifting system.

DYNOX: SIMULTANEOUS NITRIFICATION AND DENITRIFICATION IN SINGLE BASIN

DyNox® Biological Nutrient Removal

Biological nutrient removal is required in many municipal and industrial applications, and the DyNox® system provides a simple, reliable, and cost-effective method for achieving nitrogen reduction.

By cycling air delivery and creating alternating aerobic and anoxic zones within the same aeration basin, DyNox® eliminates the need for separate anoxic tanks, internal recycle pumps (MLSS pumps), and other complex BNR infrastructure.

How DyNox® Works

1. Intelligent Cycling of Aerobic and Anoxic Conditions

DyNox® uses controlled air-on/air-off sequencing to establish aerobic and anoxic phases directly in the aeration basin. This is accomplished through:

• A DO based feedback loop that regulates blower output
• Automatic electric valve controllers mounted on each floating aeration header/chain
• Valves that open and close in timed intervals (typically 20–60 minutes)

During the aerobic phase, ammonia is nitrified. When the valves switch and air is reduced, the basin transitions into an anoxic phase, allowing denitrification to occur.

The system then repeats the cycle continuously.

2. No Additional Basins or Recycle Pumps Required

Because DyNox® creates alternating biological environments inside the same basin, facilities avoid:

• Separate anoxic tanks
• Internal mixed-liquor recycle pumps
• Complex piping
• Additional civil construction

This makes DyNox® one of the most cost-effective BNR solutions available.

3. Optimized Performance with Floating Aeration Headers

When paired with the Bioworks floating, moving aeration header system, DyNox® achieves highly efficient nitrogen removal.

The natural movement of the headers improves mixing and oxygen distribution, enhancing both nitrification and denitrification.

Expected Effluent Quality

In municipal wastewater applications, DyNox® typically achieves:

• Total Nitrogen < 8 mg/L
• Consistent nitrification and denitrification
• Stable year-round performance

These results meet or exceed most NPDES nutrient requirements.

Integrated Clarifier - BIOWORKS® Rectangular Clarifier

The BIOWORKS® rectangular clarifier is a compact, integrated secondary settling system equipped with a travelling bridge for continuous sludge removal.

Installed directly at the end of the activated sludge basin (ASB), this clarifier design provides significant advantages in treatment performance, construction cost, and overall footprint.

Clarifier Configuration and Flow Path

The clarifier shares a common wall with the ASB, allowing mixed liquor to enter through multiple evenly spaced openings along the wall.

These openings are designed to maintain low inflow velocities, ensuring smooth hydraulic conditions and optimal settling.

Within the clarifier, sludge settles to the bottom and is collected by a travelling scraper bridge.

The bridge carries the return sludge pumps, which draw settled sludge through suction tubes into a lateral sludge trough.

From there, the sludge flows back to the ASB by gravity, maintaining stable process conditions.

Clear effluent exits over a final overflow weir located opposite the inlet.

The weir arrangement prevents scum carryover, and an optional scumboard can be installed when required.

Mechanical and Operational Features

Power is supplied through a cable reel, allowing unrestricted bridge movement.

The travelling bridge operates via a local control panel, providing straightforward, reliable control.

The integrated design eliminates the need for separate sludge return channels or external pumping systems.

Key Advantages

• Compact footprint and reduced civil construction
• Efficient solids separation and reliable sludge return
• Simplified operation and maintenance
• Lower overall investment cost compared to conventional clarifier systems