You have TOC's in your water system and you may have to reduce their levels. So how do go about doing that? What's the best choice available for you to remedy your TOC problem?

What if you could trial an effective TOC reduction solution for a fraction of the cost of doing analysis, or having to purchase equipment that may not work? This system is available now: "Uv-Zone", allowing you to apply a real system solution to your TOC problem. No more guessing. Real results. Real data. A genuine solution.

SPARTOX™ UV-Ozone Water Treatment Systems

AOP Design Solutions Are Validated Using Scalable Trails

There are a number of design considerations for any AOP solution. How much UV? How much O3? How much H202? Answers depend on a number of variables; the composition of the TOC, the concentration of the TOC, the target TOC levels, presence of inorganic matter, system flow rate, the electrical power budget, etc. Having a clear understanding of all the variables is rarely the case, making it very difficult to design a solution.

A practical approach to avoid over design, or worse, under design is to test a scalable solution in a manageable manner. This is the purpose of the trial system "Uv-Zone".

"Uv-Zone" is a small UVO3 AOP system that is capable of treating up to 15 gpm, single pass. The system operates in three modes: UV only, Ozone only, or UVO3 mode. The UV intensity can be adjusted for each mode and the Ozone concentration can be adjusted for each mode. This gives the designer many degrees of freedom to determine the optimal treatment solution. The UVO3 results are scalable. Results obtained from a 10 gpm process can directly be applied flow rates significantly higher. The "Uv-Zone" consists of just two small equipment skids:

• Each skid is approximately: 24" W x 48" L
• Power Consumption: 1 kW @ 230VAC, 3-Phase, 60 Hz
• Weight: 250 lbs (Ozone) and 160 lbs (UV)
• Flow rate UVO3: 0.1 to 15 gpm (10-15 gpm with Ozone operation),
• Flow rate UV only: 0.1 to 65 gpm
• Ozone Load: 3 to 30 g/hr
• UV System: (3) UV reactors (UVS238S-65) configured in series or parallel, operating separately or together

What is a TOC?

Total Organic Carbons (TOC), sometimes referred as total oxidizable carbons, are a serious problem when present in your water source. TOC's can occur naturally. These are known as natural organic matter. Humic acid, fulvic acid, amines, and urea are types of natural organic matter. TOC's can also be introduced through synthetic means by a man-made process. Detergents, pesticides, fertilizers, herbicides, industrial chemicals, and chlorinated organics are examples of synthetic organic carbons. Many TOC compounds are carcinogens, and pose a serious health hazard. Their discharge is limited by local, state, and federal regulations which are very difficult to meet. Often the only option available is to reduce the TOC's to acceptable levels.

TOC Reduction Requires a Radical Process

Organic oxidation (reduction) occurs from reactions with hydroxyl radicals, molecular ozone and/or by direct photolysis. The hydroxyl radical, -OH, is the neutral form of the hydroxide ion. Hydroxyl radicals are highly reactive and combine readily with oxidizable carbons. By-products created by this reaction are; H2O, CO2, and/or ionized oxidizable carbons. Remaining ionized compounds are easily removed using a mixed bed de-ionizer. Advanced oxidation processes (AOP) create the greatest opportunity to generate these reactions. Practical AOP processes include:

• Ozone (03) only
• Hydrogen Peroxide (H2O2) only
• UV only
• O3 + H2O2 (mixed oxidant)
• Ozone + UV
• Hydrogen Peroxide + UV
• Mixed oxidant + UV

UVO3 Has Clear Advantages Over Other AOP Processes

The combination UV and O3 AOP system is a very robust TOC reduction process, and is also very easy to manage, maintain and operate. In the UVO3 process, photons in the UV spectrum convert ozone (in the presence of water) to oxygen and peroxide. The peroxide then reacts with the ozone to form the hydroxyl radical. A simplified reaction sequence is:

O3 + H2O → O2 + H2O2 (in the presence of UV light)
2 O3 + H2O2 → 2 •OH + 3 O2

The advantages of UVO3 system are:

• The removal efficiency of the combined UVO3 process is typically higher than the additive removal efficiencies of ozone and UV alone.
• The combined UVO3 process is more efficient at generating hydroxyl radicals than the combined H2O2/UV process for equal oxidant concentrations using high output, low pressure UV Amalgam lamps.
• Ozone is generated from air on the skid. No hazardous chemicals, such as H2O2, need to be purchased or stored on-site.

Trial the "Uv-Zone" Today

The advantages of trialing the "Uv-Zone" as a potential solution to your TOC problems is very clear. For a minimal commitment and a fraction of cost, real results are obtained. Uncertainty is removed and a path to a scalable solution is achieved. For more information please contact: info@uvsciences.com or call Ultraviolet Sciences, Inc., attention: Michael Lesniak @ 858.571.6590.

"Uv-Zone" is a cooperative effort between Ultraviolet Sciences, Inc. and Spartan Environmental Technologies (www.spartanwatertreatment.com)