Tab 2-3 Definitions of solids found in wastewater Total solids(TS) The residue remain ing after a wastewater sa has been evaporated and dried cified 03 Total volatile solids(TVs) Those solids that can be volati led and off when the ts are ited(500±50℃) Total fixed solids(TFS he residue that remains after TS are ignited(500-50C) Total suspended solids(TSS) Portion of the ts retained on a filter with a specified pore size, measured after being dried at a specified temperature( 105C). The filter used most ommonly for the determination of is the whatman glass fiber 如 Those solids that can be volatilized and burned off when the TSS are ignit Fixed ded solids(FSS he residue that remains after tsS are ignited(500=+50 Total dissolved solids(TDS) Those solids that pass through the filter, and are then evaporated and dried at specified temperature. It comprised of collo idal and dissolved solids Colloids are typically in the size I Total volatile dissolved solids(VDS) Those solids that can be volatilized and burned off when the tds are ignited 500±50℃) Fixed dissolved solids(FDS) The residue that remains after TDS are ignited(500+50C) Settable solids Suspended solids, expressed as milliliters per liter, that will settle out of suspension within a s Synthetic organic compounds Algae, protozoa neutral pesticides/Pc Bacteria Cell fragmenta e. g, nitrogen. Organic debris Viruses (food and human wastes) Amino acids vitam Exocellular enzyn G-200 Sephadex G-15 Bio-Gel A150M High-pressure hquid chromatography Uitrafiltration molecular si HAC er light scatterin Approximate molecular mass. amu 01102103104105106107108109 Particle size, um Fig. 2-2 Size ranges of organic contaminants in wastewater and size separation and measurement techniques used for their quantification2-5 Tab 2-3 Definitions of solids found in wastewater Test Description Total solids(TS) The residue remaining after a wastewater sample has been evaporated and dried at a specified temperature(103 to 105 ℃) Total volatile solids(TVS) Those solids that can be volatiled and burned off when the TS are ignited(500±50℃) Total fixed solids(TFS) The residue that remains after TS are ignited(500±50℃) Total suspended solids(TSS) Portion of the TS retained on a filter with a specified pore size, measured after being dried at a specified temperature(105℃).The filter used most commonly for the determination of TSS is the Whatman glass fiber filter ,which has a nominal pore size of about 1.58 μm. Volatile suspended solids(VSS) Those solids that can be volatilized and burned off when the TSS are ignited (500±50℃) Fixed suspended solids(FSS) The residue that remains after TSS are ignited (500±50℃) Total dissolved solids(TDS) Those solids that pass through the filter, and are then evaporated and dried at specified temperature. It comprised of colloidal and dissolved solids. Colloids are typically in the size range from 0.001 to 1μm Total volatile dissolved solids(VDS) Those solids that can be volatilized and burned off when the TDS are ignited (500±50℃) Fixed dissolved solids(FDS) The residue that remains after TDS are ignited (500±50℃) Settlable solids Suspended solids, expressed as milliliters per liter, that will settle out of suspension within a specified period of time Fig. 2-2 Size ranges of organic contaminants in wastewater and size separation and measurement techniques used for their quantification