Food and Beverage


Food & Beverage


Gradiant’s solution ensures discharge compliance while also creating a valuable source of reclaimed water and renewable energy supply from biogas for our client, one of the world’s largest brewers. The value engineering approach maximized treatment efficacy, lifetime costs, and system footprint. Coordinating closely with site engineers and operational staff, the project was delivered on time and on budget, making it a model for future delivery across the client’s global manufacturing sites.

Fast Facts

Location: Mozambique, Africa

End User: One of the World’s Largest Brewers

Solution: Wastewater Treatment

Industry: Food & Beverage

Feedwater Source: Industrial Wastewater

Technologies: Bio Infinity’s BioConvert Upflow
Anaerobic Fluidized Bed (UASB),
Membrane BioReactor (MBR)

System Capacity: 3,000 m3/day

Commissioning: 2019

Delivery Model: Design-Build (DB)

The Challenge

Brewing exceptional beer is difficult enough, never mind having to deal with the intricacies of wastewater operations and discharge compliance. As one of the largest brewers planned for expansion and business growth, it also had to deal with the complications of increasing treatment capacity and effluent quality to match the output from the brewing process, cleaning operations, pasteurization, and utilities. Specific concerns addressed in Gradiant’s solution included high levels of organic constituents, variable flow rates, and increasingly stringent regulatory standards. Finally, given capital budget constraints, it was paramount to find an adaptable and reliable solution that would allow cost-effective operations for expansion.

The Solution

To treat the plant wastewater’s complex composition and fluctuating quality, Gradiant created a flowsheet that integrated a series of BioInfinity technologies to reduce the organic content, which included sugars, proteins, and yeast. Varying pH, temperature, and flow rates, coupled with contaminants from cleaning agents and sanitizers, also demanded an adaptable design approach capable of handling the dynamic needs of the wastewater system.


Gradiant integrated several components from our BioInfinity portfolio to accommodate the high organic loading of this wastewater (~13,000 kg/day COD and 6,000 kg/day BOD). The initial treatment step included BioConvert UASB, a high-rate anaerobic treatment process used to remove the bulk of the organic load from the plant. Biogas generated from this process is then captured, stripped, dehumidified, and used for boiler operations, providing a cost-effective, renewable energy source.


Gradiant’s MBR technology effectively polishes this treated effluent to meet regulatory requirements and become a water source for possible reuse in utilities and other non-potable applications.

The Benefits

Gradiant’s solution was unique – it ensured discharge compliance (specifically BOD and COD) and delivered a high quality effluent for reuse with little to no additional treatment. Informed decisions during the design, construction, and commissioning phases enabled the plant to start up without significant issues and immediately delivered effluent to the required quality for discharge.


The technology selections for this client also offered lower CAPEX and OPEX costs to conventional processes, mainly because BioConvert UASB uses far less energy than aerobic systems since it does not require aeration to remove organics. Also, BioConvert handles process variability well while removing the majority of BOD and COD. Gradiant’s MBR design provides a high-quality effluent that can be directly reused as cooling tower makeup or treated further for higher purity applications, such as boiler feedwater.

Impact Stats


COD Removal


BOD Removal


Permit Excursions
After Commissioning

50 m3/hr

Biogas Production from UASB


Annual Value Created from Biogas

Figures & Images

Legal Disclaimer

This document is for general information only. No warranty or guarantee whatsoever is given or implied and Gradiant is not bound by or liable for or by the information contained herein. Customer has the sole responsibility to determine whether the information in this document are appropriate for Customer’s use, including without limitation actual site, geographical, and plant conditions, specifications, requirements, disposal, applicable laws and regulations. This document is the intellectual property of Gradiant, including but not limited to any patent or trademark contained in this document. Distribution of this document is not and does not imply any transfer of Gradiant’s intellectual property.


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