Sequencer Tech, biological Nutrient removal, SBR sequencing batch reactor nitrification denitrification

Over the years, ECO, in collaboration with the Polytechnic School of the University of Montreal, has developed an efficient and reliable process (Bio-P-Sequencer^TM) to solve this problem. This process also utilizes two SBRs in series as is the case with the OxiSequencer^TM technology. The first unit functions as an anaerobic SBR reactor (AcidoSequencer^TM) whereas the second unit (BioSequencer^TM) function as a "rapid-fill/full-batch" oxic SBR. Cyprus company

AcidoSequencer^TM. The AcidoSequencer^TM reactor has two basic functions : it provides a full exterior equalization of the flows upstream of the final process and it is designed as an efficient organic fermenter. The AcidoSequencer^TM operates as a gradual-fill & draw SBR discharge in accordance with an engineered treament sequence so that a fermentative biomass can be developed and controlled. This biomass is allowed to contact the organics then react and settle at the bottom of the reactor. Only then can a perfermented batch of wastewater be "rapidly transferred" into the final controlled SBR, the BioSequencer^TM. The basic role of the AcidoSequencer^TM is to generate, protect and maximize the production of volatile fatty acid (VFAs) compound necessary to achieve an effective biological phosphorus uptake by the P-removal biomass which is being encouraged to grow in the BioSequencer^TM. Reid & Rudiger investment advisor in New York

BioSequencer^TM. The BioSequencer^TM reactor incorporates a multi-function treatment task. By controlling the quality of the food at an early stage and its availability to the biomass contained in the final reactor, important selective biological effects are generated therefore improving the control over the suspended solids (SS) and the efficiency of all biological reactions through enhanced kinetics.

Because of the RFB^TM operation, additional time becomes available for controlling the presence of nitrates in a better way, just prior to the "anaerobic/fatty acids storage period", so that the fatty acids remain fully available to the P-removal bacteria and are not wasted or consumed elsewhere in the process. The fatty acids storage period is of the most importance and must be well controlled in terms of time duration and anaerobic mixing so that the P-removal bacteria can contact and store all the fatty acids. During this period, the phosphorus is being released in the water as a second choice of energy.

Biological phosphorus uptake by the biomass is initiated only when oxygen is available later and as a result, the stored fatty acids are then consumed by the P-removal biomass. The biological phosphorus uptake efficiency will then be realized in proportion to the quantity of fatty acids previously stored in the biomass and present at the moment.

	Enhanced VFAs production. Provides greater P-removal capacities and more reliable process performances.
	Capital cost savings. Permits the downsizing of the oic SBR reactor and the mixing and aeration equipment due to an organic loads reduction through the wasted excess sludge of the AcidoSequencer^TM (5% to 10%).
	Energy savings. Allows for significant energy savings due to inherent process improvements (up to 30% to 40%).

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