Cayucos Sanitary District Builds New Wastewater Treatment Plant
Jan 08, 2021
The January 2021 commissioning of the new wastewater treatment plant (WWTP) for Cayucos, California provides the community with its own treatment facility. PENETRON ADMIX-treated concrete was used for the facility’s various processing tanks to provide protection from the aggressive environment.
In 2015, the Cayucos Sanitary District began the planning and construction of a new wastewater treatment plant in Cayucos to replace the now decommissioned facility in Morro Bay, an adjacent town.
The new $25 million Cayucos wastewater treatment plant uses a membrane bioreactor and ultraviolet light (MBR/UV) treatment technology with a 0.34 million gallons/day (MGD) (peak 1.2 MGD) tertiary treatment facility. Recycled wastewater will be used for onsite irrigation and fire protection.
“Thanks to recent innovations and a significant drop in the cost of treatment membranes, MBR facilities have become an accepted process option for wastewater treatment and the reuse of industrial and municipal wastewaters,” adds Christopher Chen, Director of the Penetron Group.
Past Success as Good Indicator
Because of the depth of the initial slab (about 30 feet below grade) and the seaside location, the Cayucos Sanitary District engineer needed a robust waterproofing solution. Cal Portland of Paso Robles, the concrete supplier for this project, recommended PENETRON ADMIX, which was approved by Ashley & Vance, the project’s engineering firm, thanks to superior performance parameters and success with similar projects in the past.
Approximately 4,000 cubic yards of concrete were treated with PENETRON ADMIX, which was used to waterproof and protect the sewage treatment holding tank and processing tanks – including the 3.5 foot thick foundation slab and the treatment tank walls. Cal Portland incorporated PENETRON ADMIX into the concrete mix design to provide concrete that is not only waterproof (i.e. decreased permeability) but also corrosion resistant and protected against sulfate attack.
The Process of Making Concrete Impermeable
The active ingredients in PENETRON ADMIX react with water to form insoluble crystals, which fill in cracks, pores, and voids in the concrete – becoming an integral part of the concrete matrix. This prevents liquid molecules (and harmful chemicals) to pass through the concrete.
"Permeability by water, chlorides, sulfates and other potentially harmful substances is a key characteristic of concrete durability,” explains Christopher Chen. “PENETRON ADMIX enhances durability by reducing permeability and preventing the penetration of harmful substances.”
Since its commissioning, the Cayucos treatment plant has consistently outperformed expectations for wastewater treatment based on the regulatory standards and the performance criteria anticipated in the original design.
The Penetron Group is a leading manufacturer of specialty construction products for concrete waterproofing, concrete repairs and floor preparation systems. The Group operates through a global network, offering support to the design and construction community through its regional offices, representatives and distribution channels.
More News and Articles
Sep 22, 2023
PPXXI Conference and Exhibition welcomes McElroy Manufacturing, Inc. as the mobile app sponsor. Their sponsorship enhances networking opportunities for the delegates. Scheduled over September 25 -27, 2023, in Lake Buena Vista, Florida, PPXXI is the key technical and business event …
Sep 20, 2023
Aquatech is the leading water technology show in the world, with over 800 exhibitors and expecting over 22,000 visitors from over 140+ countries.
Sep 18, 2023
Designed to reduce pollution in Lake Erie by four billion gallons per year, Project Clean Lake is a 25-year plan being overseen by Cleveland's Northeast Ohio Regional Sewer District (NEORSD). When construction crews complete the $3 billion undertaking in 2036, …
Sep 13, 2023
Mullane once again proved why the company is an industry leader in pipeline solutions with a relining project on the mid north coast of New South Wales.
Sep 11, 2023
Pezzimenti Trenchless continues to showcase its position as a leading trenchless specialist by completing works on two Victorian projects.
Sep 08, 2023
Silvertown Tunnel under Thames - Newham to Greenwich near O2 Arena: See two massive boreholes in east London
The second of two boreholes beneath the Thames – which will together form London’s new Silvertown Tunnel – is now complete.
Sep 04, 2023
Report highlights American Water’s sustainable impact on communities across the U.S.
Aug 31, 2023
Anaergia Selected to Design, Build and Operate Organic Waste-to-Renewable Energy Project in San Diego County
System to provide renewable power, reduce wastewater utility costs, and cut greenhouse gas emissions for East County Advanced Water Purification facility.
Aug 28, 2023
Spiral wound lining is a sustainable method of pipe maintenance, allowing water authorities and councils to renew their critical infrastructure. Interflow is an expert in this field and has been pioneering new techniques for decades.
Aug 25, 2023
Loader tells Trenchless Australasia that it can be hard to identify minor issues, meaning that sometimes faults are only seen when there is a system failure. “There’s a range of things that will contribute to damaging the sewer network,” says …
Aug 23, 2023
Aqua Metro has been awarded a position on the Yarra Valley Water Pipes and Facilities Program of works.
Aug 21, 2023
European Commission Regulation restricting lead in PVC supports circular aims of PVC pipe manufacturers
TEPPFA welcomes the new European Commission regulation restricting lead usage in PVC products, setting a new standard in environmental responsibility and public health protection. This regulation supports the ongoing efforts of PVC pipe manufacturers to create a more sustainable circular …