OILFIELD PRODUCTION FACILITIES, namely, WATER TREATMENT APPARATUS, namely, CLARIFICATION AND THICKENING MACHINES FOR USE IN TREATMENT OF LIQUIDS IN THE NATURE OF WATER, WASTEWATER AND INDUSTRIAL WATER; OILFIELD PRODUCTION FACILITIES, namely, WATER PURIFICATION INSTALLATIONS; OILFIELD PRODUCTION FACILITIES, namely, WASTE WATER PURIFICATION APPARATUS, INSTALLATIONS AND TANKS; OILFIELD PRODUCTION FACILITIES, namely, FRAC FLOWBACK FLUIDS RECOVERY AND RECYCLING, TREATMENT, PURIFICATION AND HANDLING INSTALLATIONS AND EQUIPMENT IN THE NATURE OF FRAC FLOWBACK RECOVERY AND WATER PURIFICATION UNITS; AND INDUSTRIAL WATER AND WASTEWATER TREATMENT DESIGN FACILITIES CONSISTING OF A PLURALITY OF WATER TREATMENT UNITS