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Award-winning management of industrial wastewater

For the last two decades, Mott MacDonald has worked with Union Pacific Railroad to responsibly manage its industrial wastewater.

Opportunity

Like other major infrastructure projects, the construction, rehabilitation, and operation of freight rail systems pose environmental challenges.

One of these is the responsible disposal of industrial wastewater from locomotive repair, fueling operations, locomotive washing facilities, and stormwater runoff from rail yards.

Solution

Since 1998, Union Pacific Railroad has relied on Mott MacDonald to handle these challenges — a partnership that has saved money, reduced environmental impact, and won dozens of awards for safety, operating excellence, and pollution prevention.

Outcome

At 23 sites in nine states from Arkansas to California, we operate wastewater treatment facilities that range from small package plants at intermodal stations to full-service pretreatment plants at major rail yards.

Industrial wastewater is collected and treated with processes that include dissolved air flotation, sedimentation, oil/water separation, chemical coagulation and demulsification, coalescent filtering, and various oil skimming mechanisms.

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