Wastewater treatment runs the gamut from relatively straightforward to highly complex—and rarely are two water problems the same. Our team combines scientific and cross-disciplinary field expertise with a varied tech stack to work with customers to achieve their water treatment goals.
Because we’re not tethered to one particular technology we have the flexibility to work within your current system, assemble a state-of-the-art stack based on your unique requirements, and adapt and respond treatment to fluctuating conditions.
The problem: This landfill had an existing water treatment plant (WTP) in place that wasn't properly designed to manage the ammonia contained in the leachate and was undersized; the WTP was also located several miles away from the landfill, so the leachate had to be trucked. They generated on average 80,000 gallons of leachate per day, with maximums at around 100,000 gpd.
Solution: Design a water treatment plant on-site capable of treating the entire leachate through filtration, dewatering, and advanced oxidation.
The problem: This landfill is generating ~200,000 gpd of leachate per day, with a variance of +/- 100k gpd. Currently, ~100k gpd is treated using reverse osmosis (RO). This generates ~66k gpd of clean water, with another ~34k gpd of concentrated waste. The waste is sent to an evaporator and the resulting solids are returned to the landfill site. Challenges include high costs associated with RO, difficulty meeting emissions targets with the evaporator, as well as odor. Remaining leachate is transported off-site for disposal.
Solution: Non-biological pretreatment to remove ~60% of the solids in the water, reducing the demand on the RO and increasing its performance. This improvement in incoming feedstock quality also offers the added benefit of a reduction of odor and NOx/SOx emissions during the evaporator stage. Upgrades to the RO system were recommended to generate additional clean water. A final step of ammonia treatment renders the salvaged water safe for discharge to sewer.
The problem: A large development is under construction at an excavated site. Water collects in the work site which stalls progress until dewatering can be completed. The client wanted to discharge water into the storm drain that feeds into local streams which are a salmon habitat. Due to the high sediment levels in the water, this client required a treatment process to reduce TSS loading because of detrimental harm to aquatic life.
Solution: We designed and installed a physicochemical treatment to remove solids and produce clean effluent safe to discharge. Weekly site visits and regular testing from our team ensure the system is performant.
Coagulation, flocculation, settling tanks, sand filtration to capture remaining solids, and clean water can be discharged directly down the storm drain.