Lining Wastewater Treatment Plant Tanks – Australia

Protective coatings for wastewater treatment plant tanks

Category: Chemical Resistant Tanks

Project: Protection from Degradation Caused by Calcification & Hydrogen Sulphide

Job Description: Over 11,000 square meters of concrete process and ozone tanks within this major wastewater treatment plant had suffered serious degradation from calcification and hydrogen sulphide attack.

Calcification involves the formation and hardening of calcium salts on surfaces, which can cause blockages and reduce treatment efficiency. Hydrogen sulphide, a corrosive and toxic gas, rapidly diminishes concrete and metal surfaces, threatening the tanks’ structural integrity.

Key steps in the project included:

High-pressure water blasting to clean surfaces.
Re-rendering damaged areas to restore structural integrity.
Priming and coating with Rhino PP1195® at varying thicknesses.

This project marked one of Australia’s biggest polyurea applications to date. Our goal was not only to repair existing damage but also to provide long-term protection to extend the plant’s infrastructure life. Our expertise in protective coatings for the best wastewater treatment system made us the ideal choice for this critical task.

The Role of Rhino PP1195® in Concrete Protection

Rhino PP1195® is a high-performance polyurea coating known for its resistance to chemical attacks, including acids and corrosive substances commonly found in wastewater treatment plant. It offers:

Versatility and durability
Strong adhesion to various substrates, including concrete

The application process began with thorough surface preparation:

High-pressure water blasting to remove loose materials and contaminants.
Re-rendering damaged areas to create a smooth surface.
Priming to enhance coating adhesion.

Once prepared, Rhino PP1195® was applied in varying thicknesses to address different exposure levels and wear conditions. Thicker layers were applied to areas with higher chemical exposure and abrasion, providing additional protection.

Polyurea Coating Application Ensures Long-term Protection

Polyurea was chosen for its:

Chemical resistance and ability to bond strongly to concrete.
Abrasion-resistant yet flexible properties allow it to expand and contract with the substrate.

This flexibility reduces the risk of cracking and delamination, which is crucial in environments with temperature fluctuations and mechanical vibrations. The strong bond ensures the coating remains intact, even under harsh conditions.

Additional Work for Water Reservoir Tank

The project also included coating over 2,500 square meters of water reservoir tank. These reservoirs, like the process and ozone tanks, required a durable protective solution to withstand continuous exposure to water and corrosive substances. The application of Rhino PP1195® provided consistent protection and durability, ensuring the longevity of these critical components.

Maintaining Quality Assurance

Strict quality assurance (QA) measures were followed throughout the project, including:

Over 300 adhesion tests were conducted to verify the coating’s bond strength and effectiveness.
Ensuring all applicators met rigorous standards for the coating application.

These QA measures were vital to guaranteeing long-term protection against the aggressive conditions within the plant. The successful completion of this project demonstrated Rhino PP1195® as a leading solution for chemical-resistant tanks, restoring the plant’s infrastructure integrity and ensuring its continued operation.

Frequently Asked Questions (FAQs):

What is a Wastewater Treatment Plant?

A wastewater treatment plant is a facility that cleans polluted or used water from many sources, including homes and businesses. Eliminating impurities and pollutants renders the water suitable for reuse or return to the environment.

What are the methods of wastewater treatment?

Wastewater can be treated using three methods primary, secondary, and tertiary treatment.

Primary Treatment: Physical elimination of huge particles and solid objects.
Secondary Treatment: biological procedures used to break down organic material.
Tertiary Treatment: Advanced procedures to remove remaining substances and ensure high water quality.

What is the wastewater treatment facility?

Sewage treatment plants, also known as wastewater treatment plant facilities, process and clean wastewater. Before the water is discharged or used again, it is purified using various equipment and processes to ensure it meets quality requirements.

For further information, you can contact Rhino Linings directly at 1300 887 780 to discuss your requirements or contact us to find out more about the Rhino Linings product range.