OPTIMIZATION OF COMPLEX TECHNOLOGY FOR GREASE WASTES UTILIZATION

Lipids constitute one of the major types of organic matter found in municipal wastewater. Many manufacturing, food processing and industrial facilities dispose of liquid waste into sewer lines. Liquid waste often contains fats, oils and grease and other organic contaminants which, over time, lead to clogs in pipes. The treatment of this problem is to clean pipes with caustic drain cleaners, mechanically rout the pipes or to replace the pipes completely. The second problem was the utilization of solid waste. JSC “Biocentras” suggest a very effective and innovative complex technology. Firstly, lipids from wastewater and from drain pipes surfaces are removing mechanically. Remained lipids and solid wastes were treated with a composition of active microorganisms. The novel composition is nonpoisonous, no corrosive, no caustic and ecologically advantageous. The invented technology ensures maximum results at the lowest cost in the shortest period of time

Optimization Of Sorbent System From Paper Mill Waste Short Fibers For Bioremediation Of Heavy Hydrocarbons In Soil

The aim was to develop a new improved Sorbent system (S-S) from organic sorbent material, nutrients, biosurfactant and microbial cell producing it for bioremediation of heavy oil hydrocarbons in various soil types. New sorbent material (S-M) was developed from paper mill short waste fibers because it requires very low energy to manufacture and the production costs of this S-M is extremely low compared to similar products in the market. S-M has good sorption characteristics for various oil products, is fully biodegradable, can be applied at sensitive environmental areas. S-M can be combined with microorganisms producing biosurfactant. The goal of investigations was to optimize S-S composition to minimize the leakage of heavy hydrocarbons to deeper soil layers or ground water. The optimal composition of S-S for all types of soil was determined: S-M 86.3-89.3%, microorganisms producing biosurfactant ≥ 107 CFU/g, biosurfactant solution – 3%, nutrients (nitrogen and phosphorous) 0.5 and 0.2%. Recommended optimal S-S moisture is 7%

Use Of Plants To Remediate Soil Polluted With Oil

In the present investigation the growing and development ability of various annual and perennial plants to grow on model peat substrate artificially polluted with oil products in the range of concentrations from 1 to 5% was evaluated. The highest tolerance towards peat contamination by oil products has been demonstrated by three annual crops (maize, oat and lupine). These plants were tested for phytoremediation of polluted black soil from the area of oil refinery plant (Mazeikiai, Lithuania), which was treated by association of oil oxidizing bacteria up to residual concentration of the oil products of 4.5 %. The maize plants revealed the highest remediation ability: oil content in the soil decreased by ~ 1.5 times in one month plant vegetation