Sludge Thickening increases the solids concentration at the end of a process step within the activated sludge process. Thickening of sludge increases its solids content and reduces the volume of free water, thereby minimizing the unit load on downstream processes such as digestion and dewatering.
Digesters provide highly efficient mixing of waste activated sludge Unlike conventional digesters, egg digesters contain much smaller spots for solids to collect. Because the reduced surface area creates a smaller scum blanket, a higher percentage of waste is continuously mixed.
Grit and Solids Removal occurs during the pretreatment stage, when wastewater is passed through a bar screen to remove large debris. It then moves on to a de-grit chamber (aerated grit tank), where small solids, such as stones, gravel and metal particles, are removed.
Aeration and Mixing Systems will typically have two options for air diffuser systems. Fine bubble diffusers provide biological system requirements at a low airflow rate, but generally airflow has to be increased to provide sufficient mixing. Coarse bubble diffusers provide high mixing power, but need twice the airflow to meet oxygen requirements.
Equalization Basins are designed to provide consistent influent flow to the downstream processes by retaining high flow fluctuations. Providing consistent flow and loading to a biological process is important to maintain optimal treatment.
Secondary Clarifiers are a circular basin in which effluent from the activated sludge process is held for a period of time during which the heavier biomass settle to the bottom as activated sludge.
Primary Clarifiers are generally used in to remove solid particulates or suspended solids from liquid for clarification and/or thickening. Concentrated impurities, discharged from the bottom of the tank are known as sludge, while the particles that float to the surface of the liquid are called scum.
Pumping Stations, also called lift stations, are designed to handle raw sewage that is fed from underground gravity pipelines. Sewage is fed into and stored in an underground pit, commonly known as a wetwell. Wetwells require mixing and dissolved oxygen.
Collection Systems are sewers that are designed to collect rainwater runoff, domestic sewage and industrial wastewater in the same pipe. Collection systems transport wastewater to a sewage treatment plant, where it is treated and then discharged to a water body.
Filtration, Disinfection and Post Aeration are usually the final stage in the water treatment process in order to limit the effects of organic material, suspended solids and other contaminants have upon discharging to the environment.
Stormwater Containment is comprised of large volume tanks or lagoons designed to capture the first run-off's and also storm surge events. These tanks require mixing of the solids and an oxygen supply to keep the process fluid aerobic.
Lime Stabilization Systems are needed when lime is added to process fluids and sludges to stabilize the pH. The lime is in powder form and requires high energy mixing to dissolve into the fluids.
Rectangular Channels are utilized to carry wastewater to various process tanks. Their channels provide capacity for excess hydraulic loading. They are susceptible to solids accumulation and low dissolved oxygen.
Air Curtains and Barriers are used to prevent sediment in consrtuction areas from being carried by currents. They are also used as freeze prevention barriers for water intake structures.
Sludge Thickening increases the solids concentration at the end of a process step within the activated sludge process. Thickening of sludge increases its solids content and reduces the volume of free water, thereby minimizing the unit load on downstream processes such as digestion and dewatering.
Digesters provide highly efficient mixing of waste activated sludge Unlike conventional digesters, egg digesters contain much smaller spots for solids to collect. Because the reduced surface area creates a smaller scum blanket, a higher percentage of waste is continuously mixed.
Grit and Solids Removal occurs during the pretreatment stage, when wastewater is passed through a bar screen to remove large debris. It then moves on to a de-grit chamber (aerated grit tank), where small solids, such as stones, gravel and metal particles, are removed.
Pumps collect and transport wastewater within the wastewater treatment plant, in order to be treated and returned to the environment.
Aeration and Mixin
Equalization Basins are designed to provide consistent influent flow to the downstream processes by retaining high flow fluctuations. Providing consistent flow and loading to a biological process is important to maintain optimal treatment.
Secondary Clarifiers are a circular basin in which effluent from the activated sludge process is held for a period of time during which the heavier biomass settle to the bottom as activated sludge.
Primary Clarifiers are generally used in to remove solid particulates or suspended solids from liquid for clarification and/or thickening. Concentrated impurities, discharged from the bottom of the tank are known as sludge, while the particles that float to the surface of the liquid are called scum.
Pumping Stations, also called lift stations, are designed to handle raw sewage that is fed from underground gravity pipelines. Sewage is fed into and stored in an underground pit, commonly known as a wetwell. Wetwells require mixing and dissolved oxygen.
Collection Systems are sewers that are designed to collect rainwater runoff, domestic sewage and industrial wastewater in the same pipe. Collection systems transport wastewater to a sewage treatment plant, where it is treated and then discharged to a water body.
Filtration, Disinfection and Post Aeration are usually the final stage in the water treatment process in order to limit the effects of organic material, suspended solids and other contaminants have upon discharging to the environment. 
Effluent Outfall Systems are used for discharging and diffusing treated wastewater into a sea, river or lake.
Stormwater Containment is comprised of large volume tanks or lagoons designed to capture the first run-off's and also storm surge events. These tanks require mixing of the solids and an oxygen supply to keep the process fluid aerobic.
Lime Stabilization Systems are needed when lime is added to process fluids and sludges to stabilize the pH. The lime is in powder form and requires high energy mixing to dissolve into the fluids.
Rectangular Channels are utilized to carry wastewater to various process tanks. Their channels provide capacity for excess hydraulic loading. They are susceptible to solids accumulation and low dissolved oxygen.
Air Curtains and Barriers are used to prevent sediment in consrtuction areas from being carried by currents. They are also used as freeze prevention barriers for water intake structures.
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