You should use a Diatomaceous Earth-Water Filter if:

• You presently operate an unfiltered water system
• You are having trouble meeting the new turbidity standards
• You are looking for a way to reduce your disinfectant demand
• You are concerned about chlorine-resistant pathogens


About Diatomaceous Earth

Diatomaceous Earth Filtration Pre-coat and body feed tanksDiatomaceous earth is a chalky, sedimentary rock comprised of the skeletal remains of microscopic water plants called diatoms. When the life cycle of these single-cell organisms is completed, the diatom organic matter decomposes and washes away, and the siliceous skeletons become an inorganic mineral and form a sedimentary deposit.

The diatomaceous earth Separmatic uses in our filtration systems receive extensive evaluation prior to mining and processing. The raw materials are analyzed for both chemical and physical properties and are controlled to exact specifications prior to use. The diatomaceous earth product is drilled, milled, classified, and calcined to purify it. The product is further classified to produce a tightly controlled porosity and permeability that assures the water treatment plant operator of consistent performance, time after time, gallon after gallon.

The level of protection afforded by Diatomaceous filtration exceeds the current and anticipated USEPA log separation requirements for protozoan pathogens and further reduces the need for disinfection.

Low Cost, High-Quality Water with Diatomaceous Earth Filtration Systems

DE filtration technology was developed specifically for potable water filtration during WWII, and today there are hundreds of water treatment plants in the United States that use DE filtration for the production of high-quality, low-cost drinking water from both surface and groundwater sources.

DE filtration has demonstrated the ability to outperform all other media filtration technologies for the separation of cryptosporidium parvum and Giardia lamblia—two pathogens known to be responsible for serious outbreaks of waterborne diseases—from portable water.

Additionally, DE filtration consistently delivers low turbidity finished water, even when challenged by spikes caused by storm runoff or recreational activity in the source water supply.

Separmatic DE filters run with very little manual attention and can be set up to run virtually hands-free. In addition, the advantages of DE filtration include:

• Tremendously high-quality effluent
• Low up-front costs (relative to competing technologies)
• Ease of maintenance
• Long filter runs

Business Advantages

Capital costs for DE plants are lower than those for slow sand plants due to much lower space requirements. In addition, they are as much as 40-60% lower than the cost for rapid sand plants because they do not require extensive pre-treatment facilities or complex coagulation chemistry. DE filtration costs are significantly lower than the capital, operation, and maintenance costs for membrane plants.

Typical results include:

  • Long intervals between backwashes
  • Potable water with .010 NTU levels or less
  • Dependable operation even in unattended locations
  • More effective than sand filters

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Pressure vessles southeast United States installation

Pressure Vessels Southeast
United States Installation

Eastern United States Pressure Diatomaceous Earth installation

Eastern United States Pressure
Diatomaceous Earth Installation

Southeastern United States installation site

Southeastern United
States Installation Site

Hoist for removal of domes during maintenance

Hoist For Removal of
Domes During Maintenance

Separmatic filter drinking water system

Separmatic Filter
Drinking Water System

Instrumentation panel southeast United States installation

Instrumentation Panel
Southeast United States Installation

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Separmatic filter pre-coat and body feed system