Double Wall Holding Tank for Emergency Spill Containment
In 2025, One Clarion supplied a custom 22,000-gallon polypropylene vertical double-wall holding tank for a space exploration company in Bastrop, Texas. The tank was engineered as an emergency spill discharge storage system within a wastewater treatment area, providing secure secondary containment for high-risk industrial fluids.
22,000-gallon double-wall holding tank
Polypropylene (co-poly) construction
Emergency spill discharge storage application
Secondary containment with leak detection provision
Hydro-tested for 24 hours
Project Overview
This project in Bastrop, Texas added dedicated emergency discharge storage and secondary containment to a wastewater treatment area for a space exploration company, with access and long term serviceability built into the layout. The tank was specified to handle a mix of treatment area fluids, including kerosene, DI water, wastewater, sodium bisulfite, and antiscalant concentrate, and engineered for the required operating range and safety factors.
Our approach
We treated this as a containment first system. The tank was specified to support multiple fluids, provide clear double wall protection, and include practical access and connection points that fit the way treatment areas are maintained and inspected.
Why it matters?
When a wastewater treatment area needs emergency discharge capacity, the storage system has to be dependable under real operating conditions. A double wall holding tank helps reduce spill exposure, supports safer operations, and keeps the site ready for inspections and response procedures.
The challenge
The customer needed an emergency spill discharge storage tank that could handle multiple materials and a wide density range while maintaining secure secondary containment. The installation also required coordination around foundation loading and crane placement.
Various chemical demands
The tank had to accommodate kerosene, DI water, wastewater, sodium bisulfite, and antiscalant concentrate without compromising material compatibility.
Design basis requirements
The design needed to cover fluids from 0.82 g per cc to 1.48 g per cc using a 1.5 specific gravity rating and a 1.2 safety factor.
Site and handling constraints
The tank was installed on a customer provided concrete foundation designed for full load weight. The empty tank weight is approximately 27,000 lbs, requiring crane placement by others.
The solution
One Clarion supplied a custom 22,000 gallon polypropylene co poly vertical double wall holding tank for emergency spill discharge storage in a wastewater treatment area. The system was built around secondary containment and day to day serviceability, with access and connection points designed to support routine operation and maintenance.
Double wall secondary containment
A vertical double wall tank configuration provides dedicated secondary containment intended for emergency discharge and spill scenarios within the treatment area.
Access and maintenance features
A welded top manway with emergency venting supports practical access for inspection and service, while keeping the tank sealed and controlled for normal operation.
Connection points for operations and sampling
Multiple welded ANSI flanged connections on the top and sidewall support venting and tie ins, including provisions for sampling, draining, and leak detection by others.
Specialist Support for Your Storage Project
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