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Glossary <br /> OF <br /> REFERENCETERMS <br /> Check balls A ball utilized to ensure that the fluid can flow only in one <br /> direction . Generally , check balls are found in pumps and check <br /> valves . <br /> Chemical feed rate The amount of chemical being pumped into the system . <br /> Chemical Flocculator <br /> tubes PVC piping arranged in a bundle form <br /> where mixing of the wastewater treatment <br /> chemicals with the wastewater occurs . <br /> Chemical make down The process of adding water to wastewater ' - <br /> treatment chemicals to produce a less <br /> concentrated form . Floc tubes <br /> Chemical metering pump A pump used to supply wastewater <br /> treatment chemicals to the wastewater <br /> treatment system . <br /> Metering pump <br /> Chemical mix tanks Tanks where treatment chemicals are <br /> mixed with the wastewater stream . <br /> Chemical transfer pump A pump that is used to transfer chemicals <br /> from a bulk storage tank to a day tank , <br /> usually an air diaphragm pump . <br /> Mix tank <br /> Clarifier Any large circular or rectangular basin used <br /> to collect the solids that result from the ---=—;` � <br /> treatment process . <br /> Circular clarifier <br /> APPENDIX PAGE 12 <br />