Solids Content of Wastewater and Manure （固体含量的废水和粪便）.pdfVIP

Oklahoma Cooperative Extension Service BAE-1759 Solids Content of Wastewater and Manure Doug Hamilton Oklahoma Cooperative Extension Fact Sheets Waste Management Specialist are also available on our website at: Biosystems and Agricultural Engineering Hailin Zhang Waste Nutrient Management Specialist Plant and Soil Sciences Suspended or Dissolved Solids Knowing the solids content of a liquid or slurry is an Total Dissolved Solids (TDS) only appear as solid mate- important first step in understanding its physical properties. rial when the sample is dried. For example, solid salt (NaCl) But, you might ask, “How can a liquid be solid?” It’s a matter and sugar dissolve in water and appear to be invisible. Dry of terminology; “solid” and “solids” are two different things. the sample and crystals reappear. Total Suspended Solids Solid is a physical state of matter—ice is solid water. Solids (TSS) are solids that remain intact when added to water. are the portion of a liquid or slurry that is left when the water Actually, the distinction between TDS and TSS is a little is removed. The amount of solids in wastewater and manure more complicated. A particle is considered dissolved (TDS) if affects nutrient content, treatment processes and handling it can pass through a filter with 1.5 micron openings (1/17,000 procedures. This factsheet highlights definitions and rela- inch).