Introduction to Diatomaceous Earth Filters
Diatomaceous earth (DE) filters are commonly used in pools due to their effective filtration abilities. These filters utilize a naturally occurring sedimentary rock made up of fossilized diatoms, which are microscopic, single-celled algae. When crushed, DE becomes a fine powder that can trap even the smallest particles of debris.
However, despite their advantages, DE filters can pose some serious health risks to both pets and children, especially during the backwashing process. In this article, we’ll discuss the dangers associated with backwashing DE filters and provide helpful tips on how to safely maintain your filter system.
How Diatomaceous Earth Filters Work
DE filters work by forcing water through a porous, DE-coated filter grid. As water passes through the grid, the DE powder captures and traps debris, leaving the water clean and clear. Over time, the DE material becomes saturated with debris, and the filter pressure increases. To maintain the filter’s efficiency, it must be periodically backwashed.
The Dangers of Backwashing Diatomaceous Earth Filters
Backwashing a DE filter involves reversing the water flow to remove and flush out the accumulated debris and used DE powder. This process often results in the discharge of DE-contaminated water into the grass or backyard, creating a hazardous and messy situation for pets and children who may come into contact with the material.
Hazards of Diatomaceous Earth for Pets
Ingestion Risks
Pets, particularly dogs, are curious creatures and may ingest the DE-contaminated water or powder left behind after backwashing. Ingestion of DE can cause gastrointestinal irritation, vomiting, and diarrhea.
Inhalation Risks
Pets that sniff or inhale the DE powder may experience respiratory distress. The fine particles can cause irritation and inflammation of the nasal passages, throat, and lungs, potentially leading to coughing, wheezing, or difficulty breathing. As well D.E. inhalation has been found to be cancerous.
Skin Irritation
Contact with DE-contaminated water or powder can cause skin irritation in pets. The abrasive nature of DE can result in redness, itching, and irritation, which may lead to excessive scratching and potential skin infections.
Hazards of Diatomaceous Earth for Children
Ingestion Risks
Children, especially toddlers, are prone to exploring their surroundings and may accidentally ingest DE-contaminated water or powder. Ingestion can cause gastrointestinal discomfort, nausea, vomiting, and diarrhea.
Inhalation Risks
Similar to pets, children can also inhale DE particles, leading to respiratory issues. This can result in coughing, wheezing, and difficulty breathing. In some cases, prolonged exposure can contribute to the development of chronic respiratory conditions such as asthma or cancer.
Skin Irritation
Children’s skin can be sensitive and is more susceptible to irritation from contact with DE-contaminated water or powder. The abrasive nature of DE can cause redness, itching, and discomfort, which may lead to excessive scratching and skin irritation.
How to Safely Backwash Your Filter
To prevent the hazards associated with backwashing DE filters, it’s crucial to follow safe practices that minimize the risk to your pets and children.
Alternative Backwashing Methods
Consider using alternative backwashing methods that don’t involve discharging DE-contaminated water into your backyard. Some options include:
- Redirecting the backwash water into a separate containment system or sewer line.
- Getting a new cartridge filter installed to avoid any backwashing altogether.
Proper Handling of Diatomaceous Earth
When handling DE, ensure that you follow proper guidelines to minimize risk:
- Wear gloves and a mask to avoid direct contact and inhalation of the DE powder.
- Store the DE in a sealable kid-safe container.
Conclusion
While diatomaceous earth filters are effective in providing clean and clear water, the backwashing process can pose significant hazards to both pets and children. By understanding the risks and implementing safe backwashing practices or upgrading your filter to a cartridge filter, you can maintain a healthy and safe environment for your family and pets.
FAQs
- Is all diatomaceous earth hazardous? There are two types of diatomaceous earth: food-grade and non-food-grade. Food-grade DE is generally considered safe for human consumption and has various uses, such as pest control and dietary supplementation. However, non-food-grade DE, commonly used in filters, can be hazardous when ingested or inhaled.
- Can diatomaceous earth filters be replaced with a safer alternative? Yes, there are alternative filter options, such as cartridge filters, which do not use diatomaceous earth and have a lower risk of causing harm to pets and children.
- How often should I backwash my DE filter? The frequency of backwashing depends on the filter’s size, usage, and overall water quality. Generally, backwashing is necessary when the filter’s pressure gauge indicates an increase of 8-10 psi above the normal operating pressure. We’d recommend every 2 weeks during the summer months in Arizona
- Is it safe to use diatomaceous earth for pest control around pets and children? When using food-grade diatomaceous earth for pest control, it is generally considered safe for use around pets and children. However, it is still essential to follow the manufacturer’s instructions and ensure that neither pets nor children directly ingest or inhale the powder.
- Can I use my pool or aquarium water for irrigation after backwashing a DE filter? It is not recommended to use DE-contaminated water for irrigation, as it may harm plants and expose your pets or children to the hazardous material. Consider replacing the filter altogether.