“biological filter”造句，怎麼用biological filter造句

The superiorities of the biological filter and activated sludge were synthesized to increase the treatment efficiency.

While not strictly necessary, your pond can benefit from having a pump and biological filter to keep water cleaner.

biological filter, trickling filter

contact biological filter

A down-flow biological filter is used for the groundwater iron and manganese.

biological filter loading

Down stream anaerobic biological filter where waste-water poured from top was used as anaerobic processing device in which bacteria colloid was found on padding in biological membrane form.

Experiment and research of wastewater treatment in city by anaerobic biological filter in series