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Drain channels are installed to remove large quantities of rain or wastewater.
A floor drain is embedded into the ground, a terrace or floor to remove runoff water.
An underground tank is designed to store fuel, different types of water (e.g., rain, potable or waste water) or other...
A wastewater treatment plant contains the equipment needed for filtering or treating waste water for reuse.
A pH meter is an electronic device which measures the degree of alkalinity or acidity of a liquid.
