TOC Reduction Bank Using UV Treatment
•Brochure: TOC Reduction Bank Using UV Treatment
Ultraviolet Sciences Inc. (UVSI) has introduced a new, high volume, TOC reduction water treatment bank, Model No: TB-UVS238S-65-8.
Ultraviolet light is an effective TOC reduction tool. Reduction of Total Organic Carbons (TOC's) in water is critical for the microelectronics and pharmaceutical industries, and in processing wastewater. Reduction is achieved via three types of reactions initiated by UV that work to destroy and/or remove organic carbons.
The primary UV/chemical reaction is an oxidation process that begins when high-energy 185 nm UV dissociates water molecules, thereby creating hydroxyls (free OH- radicals). The hydroxyls created by UV are highly reactive and readily combine with other molecules, such as the hydrocarbon molecules that make-up TOC's. When hydroxyls combine with the TOC hydrocarbons they form water and carbon dioxide molecules; TOC's are destroyed and the oxidation is complete.
The second type of UV reaction that works to remove TOC's is one whereby the ultraviolet photons dissociate organic molecules directly. This result is TOC removal by means of destruction. A third UV reaction occurs when deionization is added downstream of a UV reactor. Ultraviolet energy will ionize TOC's, which allows for subsequent removal by a deionization system. A side benefit of using UV for TOC reduction is that the TOC lamps will also generate significant levels of 254 nm output and consequently provide high levels of microbial reduction (disinfection).
One of the challenges of using ultraviolet energy for TOC reduction is that 185 nm UV does not transmit as well through water as does 254 nm UV. Therefore, it is common to design TOC reduction systems using a "flow-rate adjustment" of 10% the flow-rate of a UV disinfection system. For example, a TOC system designed for a flow-rate of 20 gpm would require the same number of UV lamps as a disinfection system designed to handle 200 gpm.
Ultraviolet Sciences Inc new, high volume, TOC reduction water treatment bank consists of eight of the highly efficient UVS238S-65 UV treatment chambers. Its modular "rack and stack" configuration allows for full access to each UV treatment chamber for maintenance operations. A "Hot Swap" option allows for equipment maintenance during operation. The individual UVS238S-65 treatment chamber uses a single low pressure, high intensity, Amalgam lamp. These lamps deliver the crucial 185 nm wavelength necessary for TOC reduction.
This product has a distinct advantage over other UV treatment chambers. The entire water column is bathed in UV light energy of 185 nm, the wavelength necessary for TOC reduction. There are no unexposed (un-illuminated) areas in this water chamber. This performance is unique in the industry. The parallel interconnect arrangement with eight of these UV treatment chambers offers multiple configuration options and a TOC reduction flow rate as high as 200 GPM.
Flexibility defines our new TOC reduction water skid. The modular nature accommodates numerous types of interface, which also unique to the industry. The individual UV treatment chambers can be connected in series for maximum TOC reduction, or in parallel to increase the system flow rate. And only two Control Units, (CU) are required per water treatment skid. Each CU operates four treatment chambers.
Maintenance is simple. The open frame construction allows easy access to the individual treatment chambers. The UV lamp length is only 38 inches. Changing a lamp is simple, requiring no tools, and only requires 42 inches of clear work area.
Click Here To Download:•Brochure: TOC Reduction Bank Using UV Treatment