SuperBiomedia™ is capable of BOD, COD, TKN and Phosphorus removal simultaneously from wastewater.
Super Biomedia™ was developed to improve the performance of currently operating bioreactors. In activated sludge systems, it offers all the benefits of fixed-biofilm systems, without any of the disadvantages of fixed media.
The use of biomedia in bioreactors and activated sludge treatment of wastewater has been documented to result in a stable process which responds well to influent fluctuations, and achieved improved treatment, in a small footprint. The primary goal of the treatment process is reduction of Biological Oxygen Demand (BOD) and nutrients in the wastewater, before the wastewater is discharged into the environment, such as the ground, creek, river or ocean.
Benefits of using media in an activated sludge plant or bioreactor:
• Uses existing facility layout and equipment, economically improving performance of the plant;
• Operator friendly, reducing process performance variations;
• High rate of BOD removal at high suspended growth food-to-mass (F/M) ratios in activated sludge systems;
• Higher effective biomass within the system, which allowed biomass concentrations to be well above the 2,500 mg/L limit for conventional activated sludge plants, thereby increasing treatment rates of BOD;
• Enhanced nitrification / denitrification, especially during cold weather conditions, due to excess biomass present and presence of anoxic conditions within the interior of the biofilms;
• Resistant to organic and hydraulic shock loads, since the biomass was immobilized on the submerged media, it could not easily washout of the system, when the hydraulic load increased, and biofilms were less susceptible to influent BOD shocks;
• Improved process stability due to increase in bacterial population and stability of biofilms on the media, which enables the process to handle influent fluctuations;
• Improved Sludge Volume Index (SVI), which results in a more concentrated sludge in the clarifier, thereby improving the process operation;
• Reduced sludge production due to higher sludge retention times (SRT), due to the immobilization of biomass on the media, which did not leave the system; this significantly reduced the sludge handling, drying and landfilling that most plants had to use for sludge disposal;
• No changes to standard operating procedures; and
• Economically meets regulatory specific effluent discharge requirements
There are two kinds of submerged media
1. Suspended media – Sponge, extruded
2. Fixed media – web/rope, caged
Fixed media need to be installed, while suspended media are simply added to the activated sludge basin, and a screen is added to prevent the media from leaving with the treated water.
Major disadvantages with fixed media, which are also advantages of suspended media are:
• Fixed media need to be installed, which increases cost;
• Fixed media gets clogged, due to biomass growth
• Liquid by-passing occurs around fixed media
• Fixed media cannot be easily cleaned, without draining the basin
Super Biomedia has a unique design
A plastic, high impact resistant, high surface area plastic extruded media, which surrounds a high surface area open-cell foam . This media has bacterial population adhering to the plastic surface, which is very open to prevent clogging, with an anoxic, de-nitrifying zone within the open cell foam piece.
Water Warriors’ Super Biomedia is capable of BOD, COD, TKN and Phosphorus removal simultaneously from the wastewater. It is fairly large and easy to contain within the bioreactor.
Competitive medias, and there are several, basically consist of plastic, extruded shapes, typically about ½ in or 10 mm in nominal size. Problems with this type of biomedia area: limited surface area, limited de-nitrification capability, no phosphorus removal, difficulty in retaining the media, and typically requiring screens, high volume content (60-70% by volume) and significantly higher costs. Since there are a large number of small pieces in the water, additional coarse bubble aeration is needed to move the media within the water.
The following table shows a comparison of the Water Warriors Biomedia with the conventional plastic media:
Comparison of Super Biomedia with other biological treatment systems
Better Environmental Standards
Reduced sludge production due to higher sludge retention times (SRT), caused by the immobilization of biomass on the media, which do not leave the system. This significantly reduces sludge handling, drying, trucking and landfill costs.
The Competition Does Not Measure Up
In fixed media environments, switching to Water Warriors Biomedia will free you from installation costs, liquid by-pass, and difficult cleaning which typically requires a major shut-down and draining.
The other types of suspended media are small, plastic extruded shapes, which only remove BOD and offer very low TKN and phosphorus removals. Water Warriors Biomedia offers the advantages of this type of media, but with added benefits of larger size and flotation characteristics.