Many adverse ecological effects have been attributed to pharmaceutical and personal care products (PPCPs) and endocrine-disrupting compounds (EDCs), but it is not clear what risk they pose to human health. In the past, water was known to contain these chemicals, but the exact amount was difficult to quantify. Recently, these chemicals have gained much more attention.
Treatment solutions for chemicals affecting human health
Whether or not we’d like to admit it, we live in a competitive society. To make matters worse, I live in a competitive home. My children are motivated by the thrill of a contest. It is not just playing games either—the competition has moved to simple, everyday tasks.
Gain an advantage in the marketplace with third-party certification
Consumers who choose to use a residential point-of-use (POU) reverse osmosis (RO) system in their home need to feel secure that their system is producing high quality, reliable water for their family. Because most of us lack sophisticated equipment at home to make this determination, many homeowners rely on trusted brands to deliver the water quality they expect.
Quality tests and certifications ensure reliable filter performance
Previous articles in this series explained principles of how reverse osmosis (RO) systems work and the main factors and components that impact their performance. Once a point-of-use (POU) RO system is operating in the field, there are several troubleshooting tips that can prevent failures due to shortened lifetimes. These failures are usually caused by scaling, biofouling or particles. This article will cover techniques and tools that are used to troubleshoot these failures.
Sights, Smells and Sound
Avoid fouling to keep RO systems running smoothly
There are several factors that impact the performance of a residential point-of-use (POU) reverse osmosis (RO) system. The previous article in this series (“Factors that Impact RO Filter Performance,” March 2010) highlighted how changes in the feedwater quality can impact the quality of the permeate water. This article focuses on how changes in the components used in a residential POU RO system impact the permeate water.
Impact on permeate water from changes in residential POU RO system components
Green by Design RO systems reduce wastewater and operating costs. The R-1500 produces 1,500 gpd with only 375 gpd to the drain. The system has a compact frame, 16 in. wide by 16 in. deep and 30 in. in height, and is equipped with an SS membrane vessel, TDS monitor, blending and recirculation valves.
The H-Series RO system produces 700 to 1,500 gal per day in a compact footprint: 19 in. in height by 28 in. in width and 11 in. deep. The stainless steel systems are designed for restaurants, beverage kiosks and misting systems. Product water TDS can be adjusted for high purity or high recovery with recirculation and blending valves.
The 2500/4000 Series stainless steel membrane pressure vessels are precision manufactured, using high-grade materials, for connection to standard RO membrane elements and are available in 304 and 316 stainless steel. They are constructed from 2-mm-thick stainless steel and use glass-fiber reinforced polyamide end caps. Vessels are fitted with EPDM U-packing sealers to provide superior leak proofing.