Xylem Launches Cutting Edge Ozone-enhanced Filtration System

Xylem Inc. has launched a cutting-edge, ozone-enhanced biologically active filtration system and multi-barrier solution for municipal wastewater treatment. Xylem’s Leopold Oxelia combines ozone, filtration and analytical instrumentation to deliver optimal wastewater treatment for water reuse and discharge into sensitive waters.

Growing populations and decreasing fresh water resources are leading to increased demand for potable reuse of wastewater treatment effluent. Previously difficult to treat pollutants like personal care products (PCPs), active pharmaceutical ingredients (APIs) and endocrine disrupting compounds (EDCs) can now be cost effectively removed from a water stream using Xylem’s Leopold Oxelia. This multi-barrier removal opens up increased options for water reuse, including industrial use, groundwater recharge, agriculture and even direct potable reuse.

The Leopold Oxelia system also makes effluent suitable for direct discharge into the most sensitive ecosystems. Around the globe, vital aquatic ecosystems are adversely impacted by contaminants that are not adequately treated by conventional wastewater treatment systems. Public concerns about human health and that of water bodies have encouraged many countries and utilities to develop their own criteria in order to protect vital aquatic environments within their jurisdictions. Switzerland has already set removal of ‘contaminants of emerging concern’ (CEC) as a top priority and recently imposed advanced micro-pollutant treatment for wastewaters into federal water protection laws.

Ozone-enhanced, biologically active filtration systems have lower capital costs than reverse osmosis-based (RO) membrane solutions and, because the systems do not produce another waste stream requiring further treatment, operations are simpler and more cost efficient.

Anton Callery, product manager with Xylem said, ““Xylem’s Leopold Oxelia ozone-enhanced biologically active filtration system harnesses the power of ozone to break down organic carbon compounds and pathogens. Microbes in the filtration system biologically use these smaller, partly oxidized organics for food, resulting in complete biodegradation. Unlike other treatment systems, the compounds are not just concentrated in another waste stream; they are destroyed. Recently tightened regulations, such as in Switzerland, will require the implementation of advanced treatment systems to minimise the quantity of Trace Organic Contaminants (TOrCs) entering the water system and to protect sensitive water bodies as drinking water resources. This solution from Xylem can be used to upgrade existing wastewater treatment plants to meet new regulations.”

“With Xylem’s experience and process knowledge of ozone, filtration and system control technologies, a cost-effective, advanced multi-barrier treatment train that is optimized to reduce energy and loss of water can be designed for a customer’s specific water matrix. Online monitoring in a single integrated control platform provides confidence and control to ensure optimal performance,” concluded Harald Stapel, ozone product manager with Xylem.
Xylem’s Leopold Oxelia is suitable for municipal wastewater tertiary applications of more than one million gallons per day (MGD) (160 cubic metres per hour). Xylem offers comprehensive design support and a process guarantee with the product.

Ozone to remove pharmecueticals from wastewater

Primozone to build a mobile pilot ozone system for removal of pharmaceutical residue from wastewater

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Published on January 14, 2014 at 6:07 AM

The Swedish ozone generator supplier, Primozone, has been awarded funding of a project for removal of pharmaceutical residue from waste water. The project has been funded by Tillväxtverket – the Swedish agency for economical and regional growth.
Primozone has received funding to build a mobile pilot scale ozone system for removal of pharmaceutical residue. The aim is to be able to prove the concept on existing waste water treatment plants and to test and confirm the system design on different water flows and environmental conditions.

“We are happy to have received funding for this project”, says Arash Golshenas, Head of R&D at Primozone. “Being able to prove concepts on site is important. This means that we can recommend our clients the best possible solution based on a pilot installed at their own site. With a correctly designed system we can see that ozone will remove almost all of the residual”.

Pharmaceutical residue in wastewater is a known problem

The prevalence of pharmaceutical residue in waste water has been known for more than a decade and many different studies have been conducted to find out its influence on the environment. So far not much has been done to remove this residue but political action is starting to give results.

Many countries in Europe are now taking political action to reduce the effects of the pharmaceutical residue. One of the first countries to implement this is Switzerland where a political decision will force about 100 sewage plants to be equipped with systems to remove pharmaceutical residue.

Existing wastewater treatment plants are not equipped to remove pharmaceutical residue. But although the technique is available it seems that political action is needed to get the process started.
Sweden is at the forefront when it comes to research into how to reduce the amount of pharmaceutical residue in wastewater; several waste water treatment plants has identified the problem and many Swedish universities are conducting studies of the residues effect on the environment.

“We see this funding as recognition of our technology and knowledge in the area”, says Anders Schening, CEO at Primozone. “It is also a chance for Primozone to grow – the potential market for removing pharmaceutical residue is huge and when the legal requirements are in place we will have an efficient solution ready. Our aim is to have a world leading position in this market”.

Ozone is an economically viable solution

Pharmaceutical residue is hard to break down; they are constructed to be stable by nature. Consequently, there are only two technologies that seem to work for removal of pharmaceutical residue, where ozone is one of the technologies. Ozone works well because it is a selective oxidant that primarily attacks electron rich structures in molecules, such as double bonds.

Ozone is also the most sustainable technology both in terms of economy and environmental friendliness.

“According to our calculations removal of pharmaceutical residue with ozone can be done at a surprisingly low cost per m3 water treated”, says Anders Schening, CEO at Primozone. “Unlike other technologies ozone treatment leaves no residue or byproducts that need further treatment – ozone is produced by oxygen and will revert to oxygen again after it has reacted”.

Primozone is the leading supplier of patented innovative ozone generators that generate far more ozone and use far less energy than the alternatives on the market. The products are highly efficient, energy efficient, reliable, easy to install and maintain, light and with a small footprint, quiet, and with a built-in flexible monitoring and control system, giving the customers more efficient and reliable water treatment, reduced operating costs and the lowest life cycle cost on the market by far.

The company’s product range consists of a series of ozone generator models, varying in size and capacity from 100 to 25000 g ozone per hour. Primozone offers complete systems for ozone treatment of water with ozone generators as well as ozone application know-how, system design, oxygen generators, compressors, mixing and tank systems, and control and monitoring systems.

Primozone’s customers are industries with wastewater treatment needs, municipal wastewater and drinking water treatment facilities as well as fish farms (aquaculture) using recirculating aquaculture systems (RAS). Primozone was founded in 2000 and has its head office, research and development, and in-house production in southern Sweden.

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