Anaerobic Selectors

Anaerobic selectors encourage biological treatment for removal and recovery of phosphorus from wastewater streams to protect the environment and promote sustainable practices for finite resources. Enhanced biological phosphorus removal (EBPR) utilizes anaerobic fermentation to maximize the biological uptake of phosphorus by phosphorus-accumulating organisms (PAOs). While the actual uptake of phosphorus occurs in an aerobic environment, PAOs must first be conditioned by exposure to volatile fatty acids (VFAs) in an anaerobic environment.

BioMix-DC Enhanced Anaerobic Mixing optimizes the anaerobic fermentation process by alternating a short mixing cycle with a long deep cycle. This allows stratification in the reactor, increasing the solids retention time in that zone and resulting in the formation of additional VFAs.

A BioMix Compressed Gas Mixing System can be used alone or in combination with BioMix-DC to provide mixing in an anaerobic environment.

Additionally, the BioCycle-ENR Activated Sludge Process is ideally suited for municipal and industrial secondary treatment processes that include anaerobic selectors.

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“If I had known about BioMix 20 years ago, I would have never bought a mechanical mixer.” Joe C. – Colorado WWTP

Advantages

Scroll through the tabs to learn about the application-specific advantages of each technology.

BioMix-DC

BioMix

BioCycle-ENR

	Energy Efficiency 90% or greater energy savings compared to continuous mixing 40-60% less active mixing energy when resuspending solids compared to conventional mechanical mixing
	Process Optimization Proven negligible oxygen transfer Designed to drive down process ORP Ability to adjust mixing frequency and intensity to optimize phosphorus removal and maximize VFA formation
	Unparalleled Flexibility Easily integrates with other BioMix applications in the facility Cycling parameters are operator adjustable or controlled via instrumentation feedback
	Straightforward Operation No mechanical or electrical components in the wastewater Non-clogging, self-cleaning parts in tank 100% redundancy with standby compressor

	Energy Efficiency 50-60% or greater energy savings compared to mechanical mixing
	Straightforward Operation No mechanical or electrical components in the wastewater Greatly reduced amount of operating equipment to be maintained Non-clogging, self-cleaning parts in tank 100% redundancy with standby compressor Optional PLC backup with Zombie® controller
	Process Optimization Complete mixing with proven negligible oxygen transfer Guaranteed uniform mixing with onsite performance testing
	Unparalleled Flexibility Patented nozzles and headers are able to accommodate multiple applications, leveraging common compressors and controls Variable mixing intensity based on process parameters

	Energy Efficiency Delivers up to 50% energy savings during periods of low loading by turning off unnecessary aeration and enabling mixing Matches the aeration and mixing needs of the facility whether it is year one or year twenty
	Straightforward Operation Dynamic process volume control, eliminating the need for fixed process volumes segregated by baffle walls No mechanical or electrical components in the wastewater
	Process Optimization Matches the anoxic, aerobic, and low DO volumes to changing influent flow, load, and temperature Improves carbon management and optimizes current and future nutrient removal Enhances phosphorus removal and reduces chemicals for phosphorus precipitation
	Unparalleled Flexibility Optimizes a variety of proven activated sludge processes — such as MLE, A2O, and others Can be designed for greenfield treatment facilities or integrated into facility upgrades utilizing existing equipment