SEWAGE PLANTS AND THEIR PARTS, NAMELY, INSTALLATIONS FOR WASTE SEWAGE TREATMENT, NAMELY, TREATMENT TANKS AND TREATMENT UNITS INCLUDING AERATION PUMPS, SEWAGE PUMPS AND CLEAR WATER PUMPS; FERMENTATION INSTALLATIONS FOR BIOLOGICAL SEWAGE PURIFICATION AND FOR TREATING SEWAGE, NAMELY, FILTERING UNITS FOR FERMENTING, PURIFYING AND TREATING SEWAGE, AERATION PUMPS AND AGITATORS; PURIFIERS FOR SEWAGE; SETTLER APPARATUS FOR SEWAGE IN THE NATURE OF A TANK WHERE WASTE WATER IS GATHERED SO THAT SEWAGE MAY SETTLE; TRANSPORTABLE APPARATUS AND INSTRUMENTS FOR PROCESSING SEWAGE, NAMELY, CARRIERS CARRYING AGITATORS, SEWAGE PUMPS, CLEAR WATER PUMPS AND AERATORS
Environmental Control Apparatus