Automotive/Automobile industry is a major consumer of water for various production process and production stages where vehicles are treated, washed, rinsed and painted and hence generating mass volume of wastewater.
Those most commonly found contaminants/pollutants in effluents are:
Wastewater from automobile industry consists of high organic and inorganic matter with oil, grease and heavy metals. If partially treated or untreated wastewater is discharged, it causes a great damage the geo-environment. The waste of motor vehicle industries is mainly the result of washing, colouring and various stages of chassis manufacturing which include oil, grease, dyestuff, chromium, phosphate and other pollutants. The liquid wastes discharged from these industries are not voluminous, but are extremely dangerous because of their toxic contents.
Bioremediation functions basically on biodegradation, which may refer to complete mineralization of organic contaminants into carbon dioxide, water, inorganic compounds, and cell protein or transformation of complex organic contaminants to other simpler organic compounds by biological agents like microorganisms. Many indigenous microorganisms in water and soil are capable of degrading hydrocarbon contaminants
Soil contamination with hydrocarbons causes extensive damage of local system since accumulation of pollutants in animals and plant tissue may cause death or mutations. The process of bioremediation, defined as the use of microorganisms to detoxify or remove pollutants owing to their diverse metabolic capabilities is an evolving method for the removal and degradation of many environmental pollutants including the products of petroleum industry. In addition, bioremediation technology is believed to be non-invasive and relatively cost-effective.
The use of microbial oil-degrading agents over the years has also revealed some problems, among which are the lack of equal effectiveness of existing bioremediation agents under different climatic conditions; gradual loss of specific activity of the microbial strains forming the basis of a particular bioremediation agent; and the frequent discrepancy between commercial products and the declared characteristics of bioremediation agents, not only in oil-degrading activity, but also in microbial composition. At the same time, it has been noted that the bioremediation agents based on natural hydrocarbon oxidizing microorganisms isolated in a specific climatic zone are the most effective, because the introduced microflora that is not characteristic of a particular ecosystem can be suppressed by indigenous microbial populations. All the above-mentioned indicates that the search for new strains of oil degrading microorganisms and the development of alternative bioremediation agents based on them remain relevant, because their application in environmental biotechnology is still in demand with environmental organizations.
Our Research & Development team has put the whole effort and introduced the combined strains of bacteria for oil-degrading microbial strains isolated from oil-sludge and oil-contaminated rhizosphere soil were studied in this work for use in bio-and phytoremediation technologies.
For the above issues, we are giving biological process (SuperX and SuperXL bio culture) and removes about 90% of BOD and COD. Biological process can be aerobic or anaerobic depending on the quality of the effluent. But most of the ETP’s use aerated sludge process (aerobic process) for effective treatment of wastewater. It removes dissolved and suspended biological matter.
