PUBLIC HEALTH Environmental Health [SP4] Environmental Health Sanitation [SP4.895] Sanitation Sanitary Engineering [SP4.895.141] Sanitary Engineering Water Purification [SP4.895.141.712] Water Purification Treatment Plants [SP4.895.141.712.174] Treatment Plants Plant Equipment [SP4.895.141.712.174.461] Plant Equipment Aerators [SP4.895.141.712.174.461.058] Aerators Pumps [SP4.895.141.712.174.461.116] Pumps Nozzles [SP4.895.141.712.174.461.174] Nozzles Boilers [SP4.895.141.712.174.461.191] Boilers Sewers Collectors [SP4.895.141.712.174.461.249] Sewers Collectors Grit Removal [SP4.895.141.712.174.461.307] Grit Removal Rotary Disks [SP4.895.141.712.174.461.365] Rotary Disks Screens [SP4.895.141.712.174.461.423] Screens Flocculators [SP4.895.141.712.174.461.481] Flocculators Flowmeters [SP4.895.141.712.174.461.539] Flowmeters Dough Mixers [SP4.895.141.712.174.461.597] Dough Mixers Water Level Recorders [SP4.895.141.712.174.461.655] Water Level Recorders Bioreactors [SP4.895.141.712.174.461.713] Bioreactors Settlers [SP4.895.141.712.174.461.771] Settlers Pipelines [SP4.895.141.712.174.461.829] Pipelines Electrostatic Precipitators [SP4.895.141.712.174.461.887] Electrostatic Precipitators Bioreactors [SP4.895.141.712.174.461.945] Bioreactors

Flocculators - Preferred

Concept UI	FD00058177
Scope note	Equipment used for stirring and mixing for the formation and aggregation of flakes. They have application in industries, laboratories and water treatment plants.
Preferred term	Flocculators
Entry term(s)	Porous Media Flocculators

Helical Flocculators - Narrower

Concept UI	FD00058179
Scope note	Helical flocculators are an alternative to the units commonly used for flocculation processes, considering the high flocculation efficiency, the reduced hydraulic detention time and the area required for its implantation. (Adapted from https://bit.ly/3rEvHS3)
Preferred term	Helical Flocculators

Hydraulic Flocculators - Narrower

Concept UI	FD00058180
Scope note	Hydraulic flocculators have less flexibility and flocculation parameters are a function of influent flow and cannot be freely adjusted. In them, the flow is close to the conditions of tubular reactors due to the existence of multiple compartments, channels and baffles, or means necessary and sufficient to promote slow mixing. (Adapted from https://bit.ly/377uFo6)
Preferred term	Hydraulic Flocculators

Mechanic Flocculators - Narrower

Concept UI	FD00058181
Scope note	Mechanical flocculators are designed with several compartments in series and have diametrically opposite inlets and outlets. They have flexibility regarding the possibility of adjusting the rotation speed of the blades or turbines imposed by the engine. This characteristic can be very important when the water treatment plant is subject to variations in flow, temperature or raw water quality. (Adapted from https://bit.ly/377uFo6)
Preferred term	Mechanic Flocculators