Slide background The Hydroflux Group consists of eight specialist water and wastewater treatment companies.These integrated businesses undertake design and construction projects, and provide aftermarket services to the municipal, mining and industrial sectors
Slide background The Hydroflux Group of Companies is based around teams of water and wastewater treatment experts harnessing the power of world leading research and technologies for a more sustainable use of water, energy and resources. .
Slide background Our Industrial division has an in depth knowledge and understanding of ALL food and beverage processes which enables it to design wastewater treatment plants effectively. .
Slide background Hydroflux Utilities provides many forms of water or wastewater plant support programs including, regular service and preventative maintenance contracts, chemical and spares supply and operation contracts for both industrial and municipal customers.
Slide background Our engineers are fully conversant with the water generated during all types of construction work and have designed and implemented unique and cost effective methods of treatment and the associated sludge handling systems.
Slide background Hydroflux Epco – With over 50 years experience in municipal and industrial wastewater treatment plants our products include – Wastewater Clarifiers, Water Clarifiers , Sludge Digesters and Package Sewage Treatment Plants
Slide background Cress Consulting is a specialist business providing environmental and sustainability consulting services to industry throughout Australia.

Understanding Industrial Trade Waste: Common Nomenclature – Part 3

Common nomenclature for trade waste is full of acronyms and regularly used terms that we need to know and understand.

Common nomenclature for trade waste

Google can’t always help! As an example, a quick search for BOD comes up with many things from an apparel line to medicinal cannabis! In terms of water, there are thousands of papers written on definitions. The following briefly summarises the main ones relevant to Australian businesses that discharge wastewater that have limits and charges associated with various substances.

BOD – Biochemical Oxygen Demand

BOD is an indirect measure of the amount of biodegradable material in the water, and its primary goal is to indicate the ‘strength of’, or how contaminated the water is. The BOD test works by measuring how much dissolved oxygen is used by bacteria when they degrade the biodegradable material. Usually it only gives a measure of organic materials present, but sometimes the test also gives a measure of inorganic nitrogen based materials as well. High BOD loads in your industrial trade waste can cause corrosion of pipework and pumping systems at the local sewer network (STP) leading to premature failure. It also requires increased energy at the STP to treat the water for discharge and generates more sludge.

High BOD can be generated from waste containing organic material such as food particles that becomes a food source for micro-organisms in the sewer that then over-grow. It may cause odours and accelerate corrosion at the STP. There is a cost associated with BOD in your trade waste that is dependent on the amount discharged.

Hydroflux DAF Systems can help reduce BOD in trade wastewater A Hydroflux DAF system can help reduce suspended solids, FOG, and in turn, insoluble BOD.

TSS – Total Suspended Solids

TSS are the insoluble solid matter suspended in wastewater under conditions normally found in sewers that is separable by laboratory filtration. TSS have a tendency to settle within the sewerage network and potentially provide locations for the generation of odorous compounds as well as acid forming gases. These rapidly erode the pipework and produce the well-known rotten egg smell sometimes associated with sewer.

High TSS can be generated from food particles in wash water and may block drainage on your premises, damage pumps at STP, block wastewater pipes and is costly to remove. There is a cost associated with TSS in your trade waste.

FOG – Fats, Oils and Grease is integrable with TOG – Total Oil and Grease

FOG can coalesce and solidify at the STP particularly as it cools within the underground sewer system. It can also cause odours and accelerated corrosion at the STP. Fatbergs from the oils and grease can cause major blockages such as the bus-sized fatberg weighing 40 tonnes recently cleared from the London sewer.

Domestic households do generate FOG waste but only in small quantities and it is diluted by much larger volumes of greywater from showers and washing machines. FOG waste generated from commercial or industrial applications is much higher quantities and is largely undiluted. There is a cost associated with FOG in your trade waste.

Industrial Trade Waste Versus Equivalent Population – Part 1Click here.
Impact of Non-Compliance – Part 2Click here.
Understanding Industrial Trade Waste – Part 4Click here.

About the Hydroflux Group
The Hydroflux Group comprises eleven companies based in Australia, New Zealand, Fiji and the UK, providing specialist design and build, equipment, processes and operational services in water and wastewater treatment and sludge treatment and dewatering. The Hydroflux Group are the exclusive Australian representatives for HUBER Technology, AEROSTRIP, CNP Technologies, Flootech MBBR, Dutch Spiral and Organica Water and incorporates EPCO Australia.

Hydroflux Pty Ltd
Level 26, 44 Market St. Sydney NSW 2000 Australia
P +61 2 9089 8833 F +61 2 9089 8830
[email protected]