Levapor MBBR/IFAS Process for Wastewater Treatment


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Levapor MBBR/IFAS Process for Wastewater Treatment

  1. 1. LEVAPOR MBBR/IFAS PROCESS Contact: Dr. Imre Pascik : levapor@web.de ; Amit Christian : levapor.india@gmail.com
  2. 2. LEVAPOR MBBR /IFAS Process: Levapor MBBR/IFAS process is based on proprietary porous, adsorbing PU carriers impregnated with activated carbon and surface active pigments for high adsorbent capacity and high internal porosity with extremely large surface are for optimal growth of micro organisms for biological wastewater treatment. PROCESS APPLICATION: The LEVAPOR MBBR/IFAS process can be applied to various biological wastewater treatment applications:  Increasing existing plant pollutant removal and flow capacity  BOD/COD removal  Nitrification for ammonia removal  Total-N and Total-P removal  Biodegradation of persistent and difficult to degrade pollutants HOW IT WORKS: IFAS, Integrated Fixed Film Activated Sludge (IFAS) also known as CFAS (Combined Fixed Film Activated Sludge) process is a combination of two fundamental biological wastewater treatment technologies namely fixed film growth and suspended growth technology. In the IFAS/CFAS process, fixed film media/carriers are added to the conventional activated sludge system aeration tank which allows growth of biomass on it. The growth of micro organisms on the attached phase enables significant increase in the biomass in the aeration tank increasing the SRT of the system without increase of recycled sludge flow rate. This hybrid configuration of suspended as well as attached growth technologies combines distinct advantages of both the technologies which are:  Retention of higher biomass in the system rendering higher loading rates and improved process stability  Smaller foot print  Lower sludge production compared to suspended growth only system Contact: Dr. Imre Pascik : levapor@web.de ; Amit Christian : levapor.india@gmail.com
  3. 3.  Improved settling characteristics of sludge  Lower solids loading rate to secondary clarifiers and thus improving their performance and operation  Improved process recovery from upsets Inlet wastewater Effluent Clarifier Aeration tank with Levapor media Return Activated Sludge Line Waste Sludge LEVAPOR TECHNOLOGY: The LEVAPOR MBBR/IFAS technology offers economical, efficient, compact and most resilient biological wastewater treatment process solutions for plant up gradation, nitrogen removal and wastewater reuse. Carrier adsorbent capacity, higher internal porosity, higher wetting and fluidization properties along with lower weight are critical to achieve faster colonization, protection of biomass, higher mass transfer, better mixing and homogenization capacity and reduced energy consumption. Contact: Dr. Imre Pascik : levapor@web.de ; Amit Christian : levapor.india@gmail.com
  4. 4. Our unique carriers made of flexible, durable, porous, light weight PU foam impregnated with activated carbon have been designed to achieve these properties for optimal performance of biological processes. PRINCIPLE CHARACTERISTICS:  LEVAPOR MBBR/IFAS systems were developed to produce optimal conditions for the growth of specific micro organisms responsible for efficient removal of pollutants achieving higher removal rates with smaller foot prints.  The combination of optimum properties achieved through impregnation of PU foam matrix with activated carbon along with surface active pigments makes LEVAPOR carriers the most suitable carriers for MBBR/IFAS application.  A cuboid configuration of 20X 7 X 7 mm allows flexibility to use sieves of higher sizes (8-10 mm) preventing head loss in the system. Moreover, light weight of colonized carriers (65-80 kg/m3) compared to plastic media reduces mixing energy requirement drastically offering significant energy savings.  The hydrophilic nature of PU foam renders fast wetting properties and higher fluidization capacity allowing for better homogenization and optimal mass transfer efficiencies of substrate and nutrients across the PU carrier matrix.  The impregnation of activated carbon allows for adsorption of toxic and inhibitory substances on it which provides remarkable process stability against toxic shock loadings and also minimizes bad odour and fouling problems drastically. The impregnation also facilitates faster colonization of carrier material reducing start up times for processes.  High internal porosity of PU carriers makes the process highly resilient to flow and pollutant loading variations protecting biomass against adverse conditions. Contact: Dr. Imre Pascik : levapor@web.de ; Amit Christian : levapor.india@gmail.com
  5. 5. LEVAPOR CARRIERS COLONIZED CARRIERS LEVAPOR ADVANTAGES:  Lower Degree of reactor filling (only 12-15%)  Smaller foot print  Faster process start ups  remarkable process stability  Simultaneous nitrification-denitrification  Lower Sludge production and better sludge settling and dewatering properties  Lower energy consumption for mixing  Protection against shock loading  Lower bad odour and fouling problems Contact: Dr. Imre Pascik : levapor@web.de ; Amit Christian : levapor.india@gmail.com
  6. 6. COMPARISON DIFFERENT CARRIER MATERIALS Property LEVAPOR total surface (m²/m³) adsorbing capacity required degree of reactor filling Unmodified PUR-foam up to 20,000 up to 2500 Plastic carriers 300 to 1200 very high moderate low 12 to 15 % 75 to 90 % 20 to 40 % 75 to 90 % 30 to 70 % porosity wetting immediately / 1- 3 days water uptake up to 250 % ionic charge + to colonisation by microbes 60 to 90 min. full fluidization at gas upflow 4 to 7 (m³/m²xh) carrier retention 8-10 mm sieves aeration fine bubble aeration additional energy for fluidization not required excess sludge removal by fluidization variability of properties very variable Contact: Dr. Imre Pascik : levapor@web.de up to 3 months - remarkably lower - non variable - several weeks n.d. 8-10 mm sieves fine bubble aeration required ( > 20-25% filling) n.d. quite narrow 50 – 75 % months (after colonisation) - negligible no several weeks to months via coars bubble aeration screens coarse bubble because of coarse bubbles by fluidization negligible ; Amit Christian : levapor.india@gmail.com