In a previous column, I mentioned that sewage treatment mounds are like a single-pass sand filter. That prompted follow-up questions about the use of media filters and how they relate to mounds. In general, media filters — either single-pass or recirculating — are used for advanced...
What Are Single-Pass Media Filters and Where Are They Used?
Proper maintenance is critical to ensure the best performance from either single-pass or recirculating filters
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