Description
The effluent from the pulp and paper industry contains large quantities of plant organic materials such as cellulose, hemicellulose, lignin, starch, etc. In addition there are many organic chemicals arising from the paper making process, particularly from bleaching and deinking. The pulp and paper industry is characterised by discharging very large volumes of warm water with variable organic strength and pH. This causes a number of problems with the treatment of such effluents. The variability in composition and the wide range of compounds in the effluent require a biomass with a broad range of activities to effectively treat it. Due to the large volumes it is necessary to have a biomass with good settling characteristics so that a clarified final effluent can be produced. While the degradation of starches is relatively easy, the degradation of cellulose, hemicellulose, lignin and organic chemicals are more difficult. This can result in poor effluent quality.
Situations in which the use of BVL 5300 are beneficial include:
- Plant start up
- Poor settlement
- Overloaded plants
- Re-seeding
- Poor final effluent quality
- Shock recovery
- Bulking sludge.
„Biovala“ harnesses the power of environmental biotechnology to solve the problems by degrading the cellulose, hemicellulose, lignin and organic chemicals in a highly efficient way. „BVL 5300“ uses only harmless, natural micro-organisms that eliminate the problem by degrading the organic matter to CO2 and H2O in a highly effective and environmentally acceptable way.
What is BVL 5300?
„BVL 5300“ consists of a carefully selected blend of natural micro-organisms that have the ability to efficiently degrade cellulose, hemicellulose, starch and other organic materials in the effluents from pulp and paper processing. The wide range of strains have been specially chosen for their ability to produce the broad range of enzymes required to completely degrade the organic matter. These strains grow at a fast rate so that they can quickly establish dominance in the biomass, which is the heart of the wastewater treatment system. The product contains strains, which have the ability to produce good floc structure which will settle well and produce a clear final effluent. The strains in the product work in harmony with the existing biomass and increase its overall efficiency so that plant performance is restored as quickly as possible. The product blend contains facultative strains, which can work effectively in lagoon systems where oxygen is limited.
The type of systems in which BVL 5300 can be used include:
- Activated sludge
- Aerated lagoons
- Sequencing Batch Reactors
- Oxidation ditches
- Biotowers.
The microbial strains are produced as single pure cultures, harvested, stabilised on a cereal base and blended together to produce the final product. Extensive checks are conducted throughout the process to ensure purity and quality of the product.