Treatment of Wastewater from Oil and Gas Industry
Impacts, Challenges and Solutions
Source & Impacts of Wastewater from Oil & Gas Industry
Oil and natural gas have powered the global economy for over a century, even if renewable energy is going viral as rising constant investment on research, developments, and applications of renewable energy all around the world, especially innovative applications of rechargeable Lithium-ion batteries in electric vehicles in many countries. But oil and gas still contribute approximately 80 percent of worldwide energy demand now.
Petroleum refinery consumes huge amount of , the use of water can be classified into four groups: steam generation which happen in boilers (approx. 15%), cooling processes (57%), production (17%), and other uses (9%). Water is in direct contact with hydrocarbons within most of the refinery processes, which eventually generate wastewater streams.
Produced Water from Oil/Gas Industry & Electrochemical Advanced Oxidation
Treating oily wastewater requires integrated yet adaptable solution that combines innovative technologies with highly efficient application with potential for optimization.
While several methods have been explored to treat produced water, physicochemical and bioremediation techniques have operational issues like generating toxic gases, transferring pollutants to other phases, producing sludge requiring large land areas, and inability to destroy stubborn compounds.
In contrast, electrochemical methods have proven to be an efficient and viable alternative for treating various industrial wastewaters, including refinery wastewater. This is due to electrochemistry’s unique ability to oxidize or reduce contaminants in water at precise locations near electrodes. Electrochemical treatment also has many benefits, such as wide applicability, simple equipment easy operation, no chemical use, lower temperature needs, and no sludge formation.
Among electrochemical methods, anodic oxidation directly destroys organic pollutants by reacting them with hydroxyl radicals formed at the anode surface during water oxidation. Using special anodes for anodic oxidation to remediate wastewater has attracted much attention.
Hydroxyl radicals is one of the most powerful oxidizing agents
Diamond-based non-active anodes, like Boron Doped Diamond (BDD) anodes, have valuable properties including an inert surface, high corrosion resistance, and an extremely wide potential range in water. BDD anodes have great potential for electrochemically treating wastewater because of their extraordinary chemical stability and ability to mineralize many stubborn organic compounds. BDD anodes can also produce hydroxyl radicals, an extremely powerful oxidant. No previous work has demonstrated electrochemically treating petroleum wastewater using BDD anodes. The objective here is to present case studies of using anodic oxidation with BDD anodes to remove petroleum hydrocarbons, phenol, ammonia, and other contaminants from produced water.
Petrochemical Wastewater Treatment Case Study
An ideal anode material for electrochemical oxidation treatment of difficult biodegradable organic wastewater.
Petroleum Hydrocarbons Treatment via BDD Electro Contaminant Removal System
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