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Secondary Treatment

Secondary treatment is the heart of most wastewater treatment plants.  Many biological treatment options are available.  Selection of the best fit for a particular application depends on many factors including influent and effluent criteria, effluent disposal or reuse, site availability and constraints, energy costs, solids disposal or reuse alternatives and operator preference.

Vertical Loop Reactor (VLR®) for Biological TreatmentA highly effficient, simple process that is Ideally suited for conventional and advanced activated sludge, simultaneous nitrification/denitrification, biological phosphorus removal and stormwater treatment.Evoqua/Envirex
Orbal® Multichannel Oxidation SystemA complete mix, looped reactor system that’s ideal for conventional activated sludge, advanced secondary sludge treatment, simultaneous nitrification-denitrification, biological phosphorus removal and stormwater treatment.Evoqua/Envirex
BioMag® ballasted activated sludgeIncreased capacity and/or nutrient removal in the same footprint or dramatically rediced footprint compared to conventional biological processes.Evoqua/Envirex
Evoqua MemPulse® Submerged Membrane Bioreactor SystemsMembrane bioreactor wastewater treatment process that combines a single sludge aerobic biological treatment process with an integrated, immersed membrane system.Evoqua/Envirex
Evoqua fine bubble membrand and coarse bubble diffused air systemsFine bubble membrane and coarse bubble diffusers for all wastewater applications.Evoqua/Envirex
Rotating Biological Contactor (RBC) ProcessIdeal for secondary and/or advanced treatment in municipal or industrial applications.Evoqua/Envirex
OMNIFLO® Sequencing and Continuous Flow Batch Reactor (SBR) SystemsA fill-and-draw, non-steady state and continuous flow activated sludge processes in which one or more reactor basins are filled with wastewater during a discrete time period, and then operated in a batch or continuous mode.Evoqua/Jet Tech
Jet Aeration and MixingIndustry leading, high efficiency Vari-Cant jet aeration systems.Evoqua/Jet Tech
Package treatment plants for wastewater applicationsCustomers benefit economically and timewise from our ability to provide a wide range of wastewater treatment equipment from design to construction.Evoqua/Davco
miniMBR® packaged treatment plants for small flow and decentralized treatment applicationsAn advanced, fully integrated, easily serviceable wastewater system for decentralized small flow customers. An efficiency breakthrough in small MBR design for nutrient removal and water reuse.Innovatreat
Integrally geared, single-stage, high efficiency blowersNext Turbo advantages include: power savings–up to 35 percent more efficient than competitive units, and turndown of air flow—100 to 40 percent to match aeration requirements.Next Turbo
Biostyr®A high-rate upflow submerged media biologically aerated filter (BAF).Kruger
AnoxKaldness™Moving Bed Biofilm Bioreactor (MBBR) for efficient, compact biological treatment.Kruger
OasesA high-purity oxygen (HPO) activated sludge process for secondary treatment of wastewater.Kruger
Oxidation Ditch TechnologiesKruger is a leading supplier of Oxidation Ditch technologies and offers some of the most advanced treatment processes on the market today.Kruger
Turborator® self aspriating submerged aerator/mixerMGD’s self aspirating aerator is ideal for ATAD’s and ATAD retrofits, lagoons, aeration basins and aerobic digesters.MGD Process Technologies

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