Building Infrastructure

Ozone is a sustainable and environmentally safe treatment for water that is chemical-free, energy-efficient and cost-effective.

It has been used for over 100 years, particularly in Europe, and provides an ideal water treatment solution for building water issues. For building infrastructure, Aclarus Ozone provides water treatment solutions for the following operational challenges:

 

 

Ozone Advantages for Building Infrastructure

There is an increase in demand for sustainable solutions for building water issues because of anticipated water shortages and increased regulations for re-using water for non-potable use in buildings.

While ozone has not always been an affordable or practical solution for buildings, Aclarus Ozone Systems are designed and engineered specifically for building infrastructure. They are an approved disinfection method for all kinds of water, are cost-effective, and can be installed on a small footprint, typically within existing infrastructure.

Ozone is increasingly being used in building infrastructure because it has the following advantages over traditional disinfection methods:

Fully Automated - Minimal Operator Requirements

Environmentally Friendly - No Harmful Residual Left in the Water

Disinfects and Sanitizes Quickly and Strongly - Without Chemicals

Treats Incoming Water to Meet or Exceed Bottled-Water Standards

Neutralizes Unhealthy Metals in the Water, Like Iron, Sulphur and Manganese

Removes Any Colour, Taste or Odour

Removes Contaminants of Emerging Concern (CEC’s), Such as Pesticides, Organic Matter, Various Microbes, Pharmaceuticals and Micro-Plastics

Produced Onsite, Removing the Need to Purchase, Transport, Store and Physically Handle Chemicals

Lowest Lifetime Operation Cost (LOC)

Quick Return on Investment (ROI)

 

Re-using water has significant environmental, economic and social benefits:

  • Less storm water for the municipality to treat and discharge;

  • Less demand from municipalities for potable water treatment used in non-potable sources (e.g. toilets), which leads to lower GHG emissions (from treatment); and,

  • Lower costs for building and business owners (lower fees for incoming water and discharge, and no ongoing chemical purchase, storage or safety)

However, there are challenges in achieving these benefits. Few treatment solutions exist that match the ability of ozone to disinfect and remove colour, metals and other contaminants without the use of chemicals; manage high flow rates; deal with varying water quality from building to building; and, are fully automated and low-maintenance.

With an increase in demand for sustainable solutions to solve re-use and building water issues, ozone is increasingly being employed because of its numerous advantages over traditional treatment methods. Supplementing or replacing an existing system with an ozone system has the potential to reduce costs and lessen environmental impacts.

 

Featured Article

 
 

On January 1, 2022, the City of Toronto implemented a new Foundation Drainage Policy that has far-reaching implications for development in the city. It is also a likely indication of measures to come in other cities, like Toronto, that are experiencing rising population growth while their municipal infrastructure and treatment facilities struggle to meet the demand.

This new policy is designed to “preserve capacity” in Toronto’s sewer systems by requiring building owners to take responsibility for the on-site treatment of groundwater and/or stormwater that accumulates in the building foundation. Once treated, the water can then be safely discharged into the City’s storm water system, taking pressure off the municipal treatment infrastructure.

Managing foundation drainage is now an important consideration for developers because permits for new commercial buildings in Toronto will not be approved without a detailed plan that addresses the requirements of the policy.

 

CASE STUDY EXAMPLES AND OVERVIEW

Aclarus Ozone is a leader in building water treatment to reduce costs, improve treatment and environmental impacts. Ozone is solving groundwater, rainwater, stormwater, drinking water, reuse - see our paper with a full overview, test results, system images and more.

Green Roof Run-Off

Green roof treatment for re-use is becoming more commonplace for its sustainable approach and the benefits to users and the public.

Green Roof refers to buildings that have vegetation, gardening and infrastructure to collect water not used by plants and vegetation. As this water is often influenced by soil and roof material, it requires more treatment.

Ozone offers complete disinfection, oxidation of metals, and removal of organics as well as colour and odour of the water. This provides water that meets end-user expectations for quality as well as marketing opportunities for responsive environmental policies. Cost savings for the building and reduced stress on municipal infrastructure and the environment provide a compelling case for ozone in re-use applications.

 

Aclarus Ozone Systems Overview

 

Aclarus Ozone systems generate ozone on-site, with an ozone level calibrated for each application and flow rate. The systems are scalable and offer advanced ozone generation, mixing and control systems for reliable and accurate treatment. They can range from simple on/off systems to fully programmable control systems with remote monitoring, alarm integration, ozone dose control and more.

Aclarus’ advanced saturation systems maximize ozone transfer into water at an average of over 90% compared with traditional transfer rates of approximately 10%. Using inline monitors, the water is measured for automated control to either increase or decrease the ozone level to remain at a set point for optimal function.

Aclarus Ozone systems also remove excess ozone from the water and destroy it, limiting potential off-gassing by using integrated air monitors for safe workspaces.

Following ozonation, the water is filtered and then ozone is either removed for incoming use or not removed and sent for use in sanitation. System controls integrate with other control systems and allow for remote monitoring.

 
 
 
 

Aclarus Ozone Safety

Building Infrastructure need safe and reliable systems that are practical and easy to use.

Ozone is generated at the time of use. This eliminates the need for bulk chemical storage, as is the case for chlorine. In the event of an ozone leak, an ozone sensor will shut down the system, activate a flashing red warning light, and turn on an exhaust fan. The flashing red light will deactivate once ambient conditions are safe for human entry. Even without the ventilation fan, the ozone would break down spontaneously within minutes of its release.

A chlorine leak, on the other hand, requires operators take extreme safety precautions prior to entering the room. They must wear protective suits to prevent skin contact and use self- contained breathing apparatus (SCBA) to prevent inhalation. Ventilation of chlorine to the outside, without prior neutralization, presents a safety concern for bystanders.

Studies have also shown that chlorine can react with organic components of the wastewater effluent to form carcinogens such as trihalomethane.

Ozone does not react with organic components; rather, it breaks down into organic compounds. And, when sulphur dioxide is added to neutralize chlorine, it reduces the amount of dissolved oxygen in the water, and increases the water’s acidity because hydrogen chloride and sulfuric acid are produced.

Aclarus Ozone Cost Comparison

There is a common perception that ozone is an unaffordable approach to water treatment. In fact, the average operational cost of the Aclarus Ozone System is approximately 5-10 cents per 1,000 litres of treated water, offering the lowest Lifetime Operating Cost (LOC) compared to other technology and a quick Return on Investment.

Aclarus Ozone systems are found in a wide range of applications – including municipal operations – precisely because they are a cost-effective and reliable treatment. There is significant independent research demonstrating the savings for municipalities when switching to ozone.

The savings are found in four categories:

Less Monitoring of Equipment

Unlike the conventional chlorination systems, the Aclarus Ozone System requires very little operator intervention. A local programmable logic controller (PLC) continuously monitors oxidation readings and adjusts the ozone generator to maintain the pre-determined setting. If the oxidation goes out of range, equipment fails, or an ozone leak occurs, an automated alarm system alerts the operator. A single Accuvac Ozone Test is performed once per day to confirm that the oxidation-reduction potential (ORP) is reading accurately.

Lower Peripheral Costs

Producing ozone requires more electricity than running a chlorination system. However, ozone does not have the same peripheral costs as chlorine, including the purchase of the chemical and the costs associated with its safe handling and storage. UV systems can be more costly than ozone because they require a UV chamber that increases an organization’s CAPEX costs, use more electricity, and require the regular replacement of bulbs.

Easier Regulatory Compliance

Due to government regulations on chlorine discharges into waterways, significant operator time is spent monitoring and controlling the chlorine and sulphur dioxide feeds. Incomplete disinfection is a regulatory violation, and the operator time required to ensure compliance with regulatory bodies is significant. Conversely, ozone control is completely automated, and since the ozone rapidly degrades to oxygen, it is unnecessary to remove the ozone post-disinfection. Operator time to control the ozone is therefore minimal.

Reduced Maintenance

Chlorine is extremely corrosive and damaging to nearly every component with which it comes into contact. The chlorine transfer lines and regulators must be cleaned/replaced annually. The ozone system uses 316 stainless steel for all its transfer lines, so maintenance cost is negligible. UV systems, meanwhile, require regular monitoring of UV bulbs and their periodic replacement. The bulbs also end up in landfill.

 
 

Do you have an ozone related question?

Read past responses or submit your question for Adam Doran Aclarus Co-Founder!