Wastewater Treatment | 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.
Product Description Manufacturer
Vertical Loop Reactor (VLR®) for Biological Treatment A highly effficient, simple process that is Ideally suited for conventional and advanced activated sludge, simultaneous nitrification/denitrification, biological phosphorus removal and stormwater treatment. Siemens/Envirex
Orbal® Multichannel Oxidation System A 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. Siemens/Envirex
MemJet® Submerged Membrane Bioreactor Systems A unique wastewater treatment process that combines a single sludge aerobic biological treatment process with an integrated, immersed membrane system.

Siemens/Envirex
Rex-Flex™ Fine Bubble Membrane Diffuser When air is turned on, the membrane expands and rises off its seat and the apertures open to release a controlled, energy efficient stream of bubbles. Siemens/Envirex
AGAR® (Attached Growth Airlift Reactor) Biological Treatment Process An innovative biological treatment process that uses thousands of special carriers designed to create an enormous total surface area for biofilm growth, enhancing your wastewater treatment process without expanding your footprint. Siemens/Envirex
Rotating Biological Contactor (RBC) Process Ideal for secondary and/or advanced treatment in municipal or industrial applications. Siemens/Envirex
OMNIFLO® Sequencing Batch Reactor (SBR) Systems A fill-and-draw, non-steady state activated sludge process in which one or more reactor basins are filled with wastewater during a discrete time period, and then operated in a batch mode. Siemens/Jet Tech
Jet Aeration and Mixing Industry leading, high efficiency Vari-Cant jet aeration systems. Siemens/Jet Tech
Package treatment plants for wastewater applications Customers benefit economically and timewise from our ability to provide a wide range of wastewater treatment equipment from design to construction. Siemens/Davco
Single-stage high efficiency blowers Turblex advantages include: power savings--up to 35 percent more efficient than competitive units, and turndown of air flow—100 to 45 percent to match aeration requirements. Turblex
Multi-stage horizontally split blowers An extremely quiet running unit that rotates at 3,600 rpm and with an expected life in excess of 30 years. Turblex
Biostyr A high-rate upflow submerged media biologically aerated filter (BAF). Krüger
Oases A high-purity oxygen (HPO) activated sludge process for secondary treatment of wastewater. Krüger
Oxidation Ditch Technologies Kruger is a leading supplier of Oxidation Ditch technologies and offers some of the most advanced treatment processes on the market today. Krüger
Diffused Aeration Panel Parkson’s aeration components can reduce costs while increasing the efficiency of the wastewater aeration process. Parkson
Biolac® Treatment System An innovative activated sludge process using long sludge age biological treatment to create an extremely stable, easily operated system. Parkson
Biolac® Wave Oxidation© Nutrient Removal Process - Wave Ox Simplifies biological nutrient removal (BNR.) Parkson
Hi-GARD® Rotary Distributors A cost effective means of distribution with low-maintenance equipment. Siemens/General Filter
AccuPac® Cross Flow Media Provides a cost-effective method for reduction of organics (roughing and polishing), nitrification, denitrification, and anaerobic treatment of municipal and industrial wastewaters. Brentwood
AccuWeb Frame™ Increases the effective Mixed Liquor Suspended Solids (MLSS) inventory of the system without increasing solids loading to the clarifier. Brentwood
Vertical Mixers Vertical Mixers for anoxic and other biological selector basins Sharpe Mixers

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