Challenge A customer facility had two large runoff tanks filled with several million gallons of high pH water associated with groundwater remediation. The customer wanted to drain both vessels to make room for additional wastewater, but each tank’s contents would need to be treated to a neutral pH prior to discharge. Additionally, sulfur precipitates in […]
Challenge: A refinery faced significant challenges with high benzene emissions from its wastewater, exceeding the Benzene Waste Operations NESHAP (BWON) requirements. Crude desalter process water, typically directed to the refinery’s Wastewater Treatment Unit (WWTU), contained high levels of dissolved benzene and phenols. These contaminants were not fully removed during primary treatment, leading to their release […]
Challenge Envent Corporation was called upon to treat approximately 619,758 gallons of hydro-test water from two newly constructed pipelines on the west coast. The newly constructed pipelines required hydro-static testing after they were installed to ensure there are no leaks and the pipelines are ready for full scale operation. The challenge was what to do […]
Challenge On Christmas Eve 2019 the citizens of a Northern California city woke up to a terrible rotten egg smell. The General Manager of the water treatment facility made a call to Envent around 2:30 p.m. on December 24th, 2019. He said he had a terrible rotten egg smell coming out of one of the […]
Challenge A local refinery had a large waste water tank that needed to be deinventoried and cleaned in order to change the service type. The water would either need to be treated on site or hauled off. Standard onsite treatment would take roughly 2 years at the rate they could discharge to the onsite system […]
Challenge A general contractor was selected by a local utility company to oversee the relocation of an electrical substation. This process required the construction of several large power lines and installation of numerous underground vaults. The project was located 0.25 miles from the coast, so the water table was very shallow near the construction site. […]
Challenge Contaminated water at a Northern California Refinery where groundwater must be extracted before it enters the bay. There is a series of groundwater wells and pumps that maintain hydraulic control of the area’s sub surface water system and prevent the contaminated water from reaching the Bay. The source of contamination was a Methyl tert-butyl […]
Challenge A California refinery had a need to load gasoline, ethanol, and other high vapor pressure materials (classified as MVR products) onto barges. MVR products are required to have vapor control on them during transfer onto the vessel. The loading terminal is not equipped with any form of vapor recovery device on the dock. Without […]
A Midwest refinery contracted Envent to provide degassing and vapor control services. The refinery planned a major turnaround and had multiple critical-path process units that needed industrial degassing and industrial vapor control services for safe entry into process vessels.
A facility on the Gulf Coast had an out of service tank that once contained Pyrolysis Gasoline (Pygas), but had recently been used to store various waste streams and contaminated water.
A tank farm had collected over 600,000 gallons of storm water runoff. The storm water needed to be treated for total suspended solids, oil and grease, benzene, toluene, ethylene and xylene. The treated water would be discharged directly into Fort Worth’s sewer system.
A general contractor was tasked with making major renovations to a utility company’s electrical transmission infrastructure. Construction dewatering was a major concern for the general contractor because the excavations were as close as 500’ from the ocean.
