How to control odour pollution for city councils

OdourPro on 29 March 2018

Odour pollution issues in public areas can become emotive topics. Residents express high levels of annoyance and concern when their daily lives are affected by unpleasant smells. This can be seen in the news media reports and social media attention given to odour pollution complaints across Melbourne’s western suburbs - specifically, Werribee. It is not uncommon for incidents like this to quickly escalate to viral status on social media as more and more members of the community become involved.

The Environmental Protection Agency (EPA) investigates odour incidents and has the power to impose fines on offenders. Sewer systems in public areas could be a source of odour. But, there are technologies that can help councils to keep odours under control and remain on friendly terms with residents.

In brief

TechnologyDescriptionExample

Chemical Dosing Systems

Chemical dosing of wastewater at pump stations or rising mains.

Inhibits the production of H2S, which is the source of 'rotten egg' smell from sewerage systems.

Carbon Filters

Activated carbon filters which remove Volatile Organic Compounds (VOCs) from vapours.

Can be placed on any vent from the wastewater system to remove odours from vented gas.

Biofilters

Uses micro-organisms to remove VOCs and toxic gases from vapours.

Use on wastewater system vents to remove odours. Can be used together with carbon filters.

Access Covers

Access covers that seal against vapour release.

Access covers are designed with an air-tight seal to eliminate odours from escaping. They are used on manholes, pump station covers, and equipment access points on wastewater systems.

Well washers

Keep fats and oils from building up on the walls of wells.

Used for pump station wells to eliminate the source of bad odours.

Wastewater treatment

There are two primary ways to treat wastewater:

  • Chemical dosing systems inject chemicals into the water stream in order to inhibit production of H2S gas, which has a noticeable 'rotten egg' smell. Ferrous Chloride, Magnesium Hydroxide and Calcium Sulphate are chemical dosing options supplied by OdourPro. Our experts can help you to determine which is the best solution for your needs.

  • Carbon filters or biofilters (or a combination of both) treat gasses that are released from vents on the wastewater network. Due to the high possibility of septic conditions in the wastewater, VOCs and H2S released from these vents have bad odours. Filters eliminate these odours before the gas is released into the atmosphere.

Access covers

Manhole covers, pump station covers, and equipment access points to pumps, and probes are a common source of odours to neighbouring communities. Unless these covers provide an air-tight seal, odorous gases will migrate out of the sewer system. Made from marine grade aluminium or stainless steel, OdourPro access covers withstand the harshest conditions. Their spring assisted struts prevent injury to workers when opening and closing. Access covers with air-tight seals give councils peace of mind that odours are kept within the wastewater sewer network.

Well washers

Well washers clean fat and grease from well walls as it accumulates. They have the added advantage of cleaning away fat before it solidifies thus reducing the probability of line blockages. OdourPro well washers are automated to spray the side walls of a well with water. Treated effluent can be used as the supply water to minimise the demand on fresh water.

Odour pollution control case studies

A complex network of wastewater accumulation at Kincumber was resulting in numerous odour complaints to the Central Coast Council. The number of rising mains, collection wells, and gravity mains complicated the problem. OdourPro installed a Ferrous Chloride chemical dosing system. Several dosing points were chosen and dosing rates were configured to follow the wastewater flow demand. Chemical dosing systems solved the odour pollution problems for Central Coast Council.

Coffs Harbour City Council had problems with odour pollution affecting residents due to a non-sealing access cover. OdourPro supplied a Halliday Channel series aluminium access cover with safety grating and non-slip coating. The air-tight seal solved the odour problems and spring-loaded struts make it easy to lift for workers.

Contact OdourPro for odour pollution control for local councils

OdourPro has extensive experience in odour management. We treat the odour problem at its biological or chemical cause for a solution that is successful and sustainable. Our technical experts and proven solutions can help your business overcome the challenges of managing odours.

Call our expert team on 1800 510 704 today to arrange a consultation to help you resolve your odour control issues.