86352 ⎘
Biological treatment of water, waste water, or sewage; Aerobic processes; Activated sludge processes; Particular type of activated sludge installations Cylindrical tanks with horizontal axis
Method and apparatus for anaerobic sludge digestion mixing and heat exchange
#2SLIGHTLY HEAVY PARTICLE SYSTEM FOR WASTEWATER TREATMENT
#3WATER TREATMENT SYSTEM AND WATER TREATMENT PROCESS
#4Wastewater treatment system and method of using same
#5Wastewater treatment apparatus
#6Bioreactor and method for the biological purification of water
#7Waste water purification apparatus
#8Wastewater treatment system and method of using same
#9Process for biological purification of waste water with simultaneous decomposition of organic and nitrogen-containing compounds
#10Wastewater treatment system and method of using same