Solutions / Municipal / Environmental Contaminant Treatment / Applications
Indirect Potable Reuse
The reuse of wastewater for augmentation of drinking water supplies (a process known as “indirect potable reuse”) is rapidly gaining support as a means of achieving a sustainable water supply and for protection against drought.
Many contaminants, however, such as the nitrosamines (e.g. NDMA), pharmaceuticals, endocrine disruptor chemicals, industrial solvents can pass through or are formed in traditional wastewater treatment plants, and are not fully removed by reverse osmosis membranes. These chemical contaminants must be removed before the water can safely be reused. Examples of contaminants potentially present in wastewater are:
Nitrosamines: The nitrosamines group consists of a large number of compounds formed by various combinations of amines and nitrogen compounds and having the foundational structure N-N=O. Perhaps the best known nitrosamine is N-nitrosodimethylamine (NDMA). Advanced treatment technologies such as reverse osmosis, carbon adsorption, ozone and air stripping are ineffective in treating NDMA. The NDMA molecule is considered to be carcinogenic at very low concentrations and is destroyed with ultraviolet (UV) light by a photochemical process known as UV-photolysis.
Pharmaceuticals, Personal Care Products (PPCPs), and Endocrine-Disruptor Compounds (EDCs): Until recently, PPCPs and EDCs were not viewed as potential environmental contaminants as their fate following use was not given significant consideration. However, with recent advances in analytical technology and a growing body of evidence of environmental impacts, this group of chemicals is coming under increasing scrutiny by water providers and regulatory agencies. As many of these contaminants are oxidizable, Trojan’s UV-Oxidation systems are capable of treating a wide variety of PPCPs and EDCs.
>> Download the ECT Solutions Brochure
Nitrosamines: The nitrosamines group consists of a large number of compounds formed by various combinations of amines and nitrogen compounds and having the foundational structure N-N=O. Perhaps the best known nitrosamine is N-nitrosodimethylamine (NDMA). Advanced treatment technologies such as reverse osmosis, carbon adsorption, ozone and air stripping are ineffective in treating NDMA. The NDMA molecule is considered to be carcinogenic at very low concentrations and is destroyed with ultraviolet (UV) light by a photochemical process known as UV-photolysis.
Pharmaceuticals, Personal Care Products (PPCPs), and Endocrine-Disruptor Compounds (EDCs): Until recently, PPCPs and EDCs were not viewed as potential environmental contaminants as their fate following use was not given significant consideration. However, with recent advances in analytical technology and a growing body of evidence of environmental impacts, this group of chemicals is coming under increasing scrutiny by water providers and regulatory agencies. As many of these contaminants are oxidizable, Trojan’s UV-Oxidation systems are capable of treating a wide variety of PPCPs and EDCs.
>> Download the ECT Solutions Brochure
Related Products
TrojanUVPhox
The TrojanUVPhox™ (UV-Photolysis and UV-Oxidation) solution is a groundbreaking, pressurized ultraviolet (UV) light reactor that utilizes Trojan’s high-output, monochromatic amalgam UV lamps.