What ingredients in algaecides can effectively remove algae?

In the management of swimming pool water bodies, the excessive growth of algae often becomes a troublesome issue. This not only affects water quality but can also pose a risk to the physical health of swimmers. To solve this problem, the rational application of algaecides is very important. Algaecides are chemical preparations designed specifically to inhibit or destroy algae, with various mechanisms of action to control the growth and reproduction of algae. The following analyzes the effective components in algaecides and how they effectively perform algae removal.

Picture of algae growing in swimming pool

Algaecides are agents used to inhibit or kill algae, containing various effective components that act on algae in different ways. Here are some commonly used algaecide components and their functions

Copper sulfate is a common algaecidal agent, working by using copper ions to destroy algal cells, thereby killing them. Copper ions damage the cell walls and internal structures of algae, affecting the normal life of microalgae, and thus causing their death. Copper sulfate is effective against various types of microalgae, especially against planktonic algae and certain filamentous algae. Chelated copper compounds are also used. In an aquatic environment, they have higher stability and can exist in water for a long time, therefore, frequent use is not required. This method is particularly suitable for larger water areas, or where long-term algae removal management is required.

Quaternary ammonium compounds are widely used algaecides, mainly working by destroying algal cell membranes to inhibit the growth of algae. These compounds can change the membrane permeability of algal cells, causing the loss of internal substances, leading to the loss of vitality and eventual death of algal cells. However, quaternary ammonium compounds can have certain negative impacts during the algae removal process. One of the most common problems is the formation of foam in the water. This is mainly because quaternary ammonium compounds have lower surface tension, making them prone to foam formation.

Peroxyacetic acid is a relatively novel algaecide, effective against various types of algae, especially under low-temperature conditions. Its main mechanism is the oxidation and sterilization of algal cells. This substance can penetrate algal cells, causing strong oxidative actions, destroying biological macromolecules such as proteins, lipids, and nucleic acids in algal cells, leading to cellular dysfunction and death.

Sodium percarbonate produces hydrogen peroxide during use. It is an oxidant with good oxidative effects on both filamentous and planktonic algae. This product is non-toxic to other species and degrades rapidly in water bodies.

Endothall is a very effective algaecide, applicable to various types of algae, especially filamentous algae and some difficult-to-treat blue-green algae. The effectiveness of endothall mainly stems from its impact on the cellular structure of algae. Endothall also has a relatively long duration of effect, meaning that after a single application, it can maintain algae removal effects in the water body for an extended period, reducing the need for frequent treatments.

In practical applications, the effectiveness of algaecides depends on the type of algae, water chemistry, and environmental conditions. Additionally, the misuse or improper application of algaecides can cause a range of ecological problems, such as non-target impacts on aquatic ecosystems and resistant algal strains. Therefore, the application of algaecides is very important in a comprehensive algae management strategy, and it is necessary to adhere to label instructions and environmental guidelines.