PROJECT
Water Treatment from Pipeline Hydrostatic Testing
SERVICE
INDUSTRY
Municipal
PROJECT LOCATION
PROJECT DATE
2016
QUANTITY
CHALLENGES
- The contaminated water had to be treated quickly before freezing temperatures
- Strict requirements had to be met to meet petroleum industry standards
BACKGROUND
The generated water, stored in a 37,000 m³ tank, had to be treated quickly and discharged into the MMC sanitary sewer before freezing temperatures set in. The operations needed to be carried out in compliance with the petroleum industry’s strict health and safety requirements.
SOLUTION
Following a brief settling period, a second pretreatment was performed in the storage tank via closed loop chemical oxidation.
Next, the pretreated water was decontaminated using a series of filters positioned as follows:
- Sand/anthracite
- Bag-type
- ULTRASORPTION™ media
- Granular activated carbon
The contaminated water was treated over a period of 3 weeks at a maximum flow rate of 1,390 L/min (2,000 m³/day) before being discharged into the municipal sanitary sewer system. The treatment performance was such that the strictest standards for discharge into storm drains were also met.
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