Pioneer Hi-Bred Greenhouse

Wahaso worked with the Pioneer sustainability team to put together a plan to capture rainwater and stormwater to feed their new greenhouses. Phase I of the project called for constructing a 100,000-gallon Atlantis Modular Rainwater harvesting system. The 50’x200′ basin consisted of 1,079 triple Atlantis tanks which were wrapped in a geotextile and encased in a 45 mil.

Firestone EPDM impermeable liner. The tank was designed to capture the rainwater from rooftops and stormwater from parking lots, channeled through a CDS system (continuous deflection separation) and captured within the tanks. Atlantis was a perfect solution for the cistern because of the cistern location within a stormwater retention area. In addition to water entering the tank directly from the CDS unit, additional stormwater can filter through plant medium and sand directly into the top of the tank.

A unique pressure-regulating valve allows water pressure outside the tank to equalize tank levels during high-capacity storms. The Atlantis system passively manages water quality in the tank during long storage periods. Wahaso designed and supplied a custom R/O system to bring both rainwater and municipal make-up water to a high-quality standard to supply the greenhouses. The R/O discharge is captured and used to supply toilet flushing and general cleaning in the facility. A 15,000 HDPE tank in the equipment area holds treated R/O water and a second 5,000-gallon tank stores discharge for reuse. A UV loop in both tanks maintains water quality by preventing any growth of algae or pathogens.