NEOSEP® MBR and NEOSEP® MBR Package Systems

Sample streams from operating NEOSEP® MBR system

NEOSEP® MBR

NEOSEP is a TITLE 22 APPROVED membrane bioreactor (MBR) combining Kruger's biological wastewater treatment expertise with an innovative, high performance, flat sheet membrane.

Owners of NEOSEP MBR systems benefit from Kruger's experience and proven track record in designing robust, reliable, and user friendly wastewater treatment process solutions, as well as Veolia Water's worldwide experience in MBR WWTP design and operation.

The NEOSEP MBR process enhances and simplifies conventional activated sludge processes by eliminating final clarifiers and filters. The flat sheet membrane barrier ensures stable operation, consistently producing a high quality effluent in a small footprint. NEOSEP MBR systems are designed to accomplish BOD and TSS removal, nitrification, denitrification, and enhanced biological and/or chemical phosphorus removal.

A NEOSEP MBR system typically consists of separate aeration tanks followed by membrane tanks containing flat sheet membrane modules. The process incorporates screens; activated sludge bioreactors; aeration, mixing, and pumping equipment. The NEOSEP MBR process is controlled by a PLC based control system and SCADA system.

The membrane elements separate the mixed liquor solids from the treated effluent which is drawn through the membrane by either gravity or pumps. The permeability of the elements is maintained through continuous air scouring of the membrane surface, a membrane relaxation phase and a periodic in-situ chemical cleaning. Excess mixed liquor solids are wasted directly from the aeration tanks.

Membrane Facility

Kruger's Slim2Fit™

Traditional Flat sheet MBR design becomes significant factors when looking at larger capacity wastewater treatment plants, above 3 MGD.These less than desirable traits are centered on the membrane tank packaging density and air scouring energy requirement.

Kruger's Slim2Fit Flat Sheet MBR design addresses these issue by more closely packing the membranes together in the membrane tank.This helps reduce the membrane tank capacity by creating a higher membrane area to tank area ratio.Having the module packed side by side eliminates mixing and down comers within the membrane tank and creates a true air lift configuration across the membrane surface.This creates a more effective membrane scouring because there is no cone effect at the bottom portion of the membrane sheets.Also, having the membrane close together helps reduce power consumption associated with membrane scouring because the system can have alternate air feed to the base of the modules.

In summary, Kruger's Slim2Fit MBR design provides the following improvements to larger capacity traditional flat sheet MBR plants:

  1. Smaller footprint - 1/3 volume of traditional flat sheet Membrane tankage
  2. Membrane tank down comer are eliminator resulting in better membrane surface air scouring
  3. Ability to Alternate Scouring - Energy Savings

NEOSEP Effluent Quality

Advantages of the NEOSEP® MBR

The NEOSEP MBR system combines two proven technologies: enhanced activated sludge treatment and immersed membrane filtration.

  • Smallest Membrane Tank Footprint of all Flat Sheet MBR suppliers with Slim2Fit Option
  • Eliminates the need for secondary clarification and tertiary filtration
  • Allows for permeate to be conveyed by gravity
  • Is compact and easy to incorporate in both retrofits and new plant construction
  • Allows for longer sludge retention times, resulting in lower excess sludge production
  • Delivers the highest effluent water quality consistent with reuse standards.
  • Complete biomass retention
  • Available in 3 package plant configurations

25,000 GPD Unit

Package NEOSEP Systems

The NEOSEP Package System is a self-contained modular wastewater treatment plant ideal for nominal operating flows between 25,000 and 75,000 gallons per day (GPD). Each unit is pre-engineered, skid mounted and factory tested, allowing for savings on installation time and cost.

The MBR process is robust and requires minimal operator attention. The process is designed in a MLE configuration with submerged flat sheet membranes handling the liquid solid separation step. The membranes allow for a compact footprint and a superior effluent; CBOD < 5 mg/L, TSS < 1 mg/L,TN < 10 mg/L and turbidity < 0.1 NTU. Phosphorus removal can be accomplished with the addition of coagulant.

Included Equipment

  • Membranes Modules
  • Painted Steel Tank (Anoxic, Aeration and Membrane Zones)
  • Painted Steel Pump and Blower Skids
  • Drum Screen
  • Mixed Liquor Feed Forward Pump
  • Internal Recycle Pump
  • Permeate Pumps
  • Anoxic Zone Submersible Mixer
  • Automated and Manual Valves
  • CIP System
  • Process Aeration Blowers
  • Scour Aeration Blowers
  • Fine Bubble Aeration Grid
  • Control and Power Enclosure
  • Instrumentation
  • Industrial Computer/SCADA System

For additional information on the NEOSEP® MBR System, please contact Michael Sparks at (919) 677-8310.