Products

GPAC Precision Aeration Control

GPAC

Air delivery matched to process demand.

Process modeling | dissolved oxygen control | blower and valve coordination

GL-TURBO Precision Aeration Control brings the biological process, air supply, and distribution network into one coordinated system. Feedforward modeling anticipates oxygen demand, while sensor feedback adjusts operation as plant conditions change.

The activated sludge model evaluates air volumes, return ratios, and valve positions to support treatment objectives and reduce unnecessary aeration.

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Coordinated control

From oxygen demand to airflow.

GPAC coordinates the control layers that influence energy use and treatment performance.

Process model

An IWA activated sludge model supports feedforward prediction of oxygen demand and effluent quality.

Dissolved oxygen

Use dynamic model-derived DO setpoints or operator-selected setpoints to meet changing treatment requirements.

Blower coordination

A flow demand signal to the master control panel coordinates blower output. Supported technologies include centrifugal, air-bearing, magnetic-bearing, Roots, and screw blowers.

Most-open valve control

Dynamic MOV control opens the highest-demand branch fully and balances the other valves to reduce distribution pressure losses.

Chemical dosing

Optional phosphorus-removal and carbon-source dosing modules use process measurements and effluent feedback.

BCT-Light

A simplified approach for small plants and sites without electric aeration valves or suitable flowmeter installation locations.

Operating experience

Precision aeration, supported by process expertise.

GL-TURBO's v2601 company profile reports long-term operation maintaining dissolved oxygen within ±0.5 mg/L of setpoints, with control accuracy above 95%. Performance depends on the plant and operating conditions.

In 2022, GL-TURBO acquired the assets of BioChem Technology, Inc., strengthening its capabilities in precision aeration control.

Read the company profile (PDF)

Air distribution

Valves designed for aeration control.

Diamond Valve provides model-based valve positioning. MassTrol combines flow measurement and control in one valve, with valve-position and airflow command options.

Explore Diamond and MassTrol