R26AC00132↗

Carollo Engineers Inc: all federal awards · Department of the Interior: spending

WATER RECLAMATION AND REUSE HAS BECOME AN IMPORTANT PART OF WATER PORTFOLIO AS A RESPONSE TO CURRENT DEMANDS AND CHALLENGES THAT COMMUNITIES FACE THROUGHOUT RECLAMATION S REGIONS, OTHER PARTS OF THE US AND THE WORLD. ENTITIES NEEDING ADDITIONAL WATER SUPPLIES ARE TURNING TO POTABLE WATER REUSE AS AN OPTION TO AUGMENT WATER SUPPLIES. TRADITIONALLY, WASTEWATER IS TREATED BY PRIMARY AND SECONDARY WASTEWATER TREATMENT AND SOME UTILITIES USE TERTIARY TREATMENT AND ADVANCE OXIDATIVE PROCESSES PRIOR TO DISCHARGE OF TREATED WATER. POTABLE REUSE WILL FURTHER TREAT THE TERTIARY TREATED EFFLUENT FROM A WASTEWATER TREATMENT PLANT USING ADVANCED WATER TREATMENT PROCESSES SUCH AS RO OR A STRING OF PROCESSES OFTEN COINED AS BEST AVAILABLE TECHNOLOGIES. TWO KEY ISSUES TO WATER REUSE ARE THE OCCURRENCE OF CONTAMINANTS OF EMERGING CONCERN (CEC) AND COST OF TREATMENT DUE TO THE ADDITION OF TREATMENT TO SECONDARY OR TERTIARY TREATED WASTEWATER. SOME CECS, EVEN AT LOW CONCENTRATIONS, POSE A THREAT TO PUBLIC HEALTH BASED ON THEIR POTENTIAL LONG-TERM EXPOSURE IMPACTS. PHARMACEUTICALS, PERSONAL CARE PRODUCTS, ENDOCRINE DISRUPTING COMPOUNDS, PFAS SPECIES AND DIFFERENT INDUSTRIAL ADDITIVES ARE THE PRIME EXAMPLES OF CECS. MEMBRANE TECHNOLOGIES SUCH AS REVERSE OSMOSIS (RO) SEPARATE SOLUTES, ORGANIC COMPOUNDS AND MICRO-ORGANISMS FROM THE AQUEOUS PHASE. RO PROCESSES HAVE PROVED HIGHLY EFFECTIVE AT REMOVING A WIDE RANGE OF CECS, HOWEVER, THESE CECS MOSTLY END UP IN THE CONCENTRATE STREAM OF THE RO PROCESS. OCCURRENCE OF CECS IN THE CONCENTRATE STREAM THAT ARE DISPOSED TO THE ENVIRONMENT IS A MAJOR CHALLENGE FOR POTABLE REUSE. POTABLE WATER REUSE IS ENERGY INTENSIVE AND COSTLY. WASTEWATER IS TREATED TRADITIONALLY BY USING PRIMARY, SECONDARY AND TERTIARY TREATMENT FOLLOWED BY ADDITIONAL TREATMENT TO BRING THE EFFLUENT TO POTABLE WATER STANDARDS. WE PROPOSE TO FURTHER A PILOT STUDY TO EVALUATE LONG TERM TESTING OF A NOVEL TREATMENT MECHANISMS THAT WILL BYPASS SECONDARY AND TERTIARY TREATMENT AND TREAT PRIMARY WASTEWATER EFFLUENT TO POTABLE WATER QUALITY. WE PROPOSE TO TEST A MICRO ULTRA FILTER, REVERSE OSMOSIS, AND A MICROBIAL FUEL CELLS (MFC) TO FURTHER TREAT AND POLISH WASTEWATER AND STUDY ITS LONG-TERM EFFECTIVENESS TO TREAT WASTEWATER, DEMONSTRATE CEC REMOVAL AND REDUCTION, POSSIBLE ENERGY GENERATION TO ULTIMATELY LOWER THE COST OF POTABLE WATER REUSE.

Cooperative Agreement · Bureau of Reclamation · to Carollo Engineers Inc (UEI C7HVTLQZSWN4) · data as of 2026-10-23

Source: USAspending.gov prime award transactions and FSRS subaward reports, as loaded by SpendQuery (data as of 2026-10-23). Amounts are obligations (money committed), not outlays. The official record on USAspending.gov ↗