11 Water treatment apparatus, namely, clarification and thickening machines for use in treatment of liquids in the nature of water, waste water and industrial water; bioreactor for use in the treatment of wastewater and waste; anaerobic digesters for waste treatment, comprised of a waste water treatment tank, water pumps, solenoid valves, gas blowers, hoses, fittings and clamps, skid pit agitator piece with duck bills, emergency relief valve, flame arrestors, temperature probes, gas hood, gas mixing system, bulk tanks, duck bills and clamps, heat exchangers and a draft wall; add-on components for anaerobic digesters for wast treatment, namely, nutrient recovery system, clean water system, secondary solids separation equipment, solids drying equipment, all for the treatment of waste and waste water treatment, nutrient recovery, production of biosolids and conversion of biomass; biogas fermentation reactors, namely, percolating fermenters and dry fermenters