What is a biocides in water treatment?
A biocide is a chemical treatment that is formulated to effectively control microbial growth. Problems caused by un-controlled microbial growth can range from health hazards, the breakdown of chemicals, the development of biofilms , heat transfer losses, restriction of flow and under deposit corrosion.
What is biocide injection?
Biocide (formaldehyde) has proved to be efficient at combating bacterial growth and hydrogen sulphide production by the bacteria. These results show that biocide can be used to prevent internal corrosion of oil pipeline since it inhibits hydrogen sulphide formation from metabolism of the bacteria.
Why is it important to add biocides to an open recirculating system?
Biocides are used to control bacteria in cooling water systems. Failure to implement a good cooling water biocide program may lead to bacteria and under deposit corrosion. Under deposit corrosion occurs when bacteria occurring within the water system. Under this bacteria, corrosion occurs.
What is the purpose of biocide?
Biocides are used to decontaminate the skin of patients and health professionals, any surfaces that could harbour bacteria, and any instruments in contact with patients. Biocides are also used as antiseptics to treat infections in mucous membranes and damaged skin.
What is biocide dosing?
In effect, pulse dosing may be taken as shock treatment on a more frequent application. Since a continuous dose of 20mg/l of biocide appeared to restrict biofilm growth, it was decided to use the total biocide used over a 24 hour period, and dose this quantity in 4×15 minute pulses evenly spaced throughout 24 hours.
What are biocides used for in pipelines?
Biocides are used to eradicate microorganisms in pipelines. At least two biocides may be used alternately for better results and to reduce the bacteria developing immunity to the agents. Biocides can be injected in a batch process depending on the requirements.
How do biocides work?
When added in small amounts to pool water or industrial water systems, the chlorine atoms hydrolyze from the rest of the molecule forming hypochlorous acid (HOCl) which acts as a general biocide killing germs, micro-organisms, algae, and so on. Halogenated hydantoin compounds are also used as biocides.
What chemical is used in chilled water?
Chiller chemicals are used to control corrosion and to prevent bacteria growth. The most common chiller corrosion chemical is a closed loop nitrite, borate, silicate product. The second chemical is a cooling water biocide. The most common biocide used to control bacteria is gluteraldehyde and isothiazolin.
Is biocide a bleach?
Biocides are substances that can destroy living organisms. The use of a chemical or biocide that kills organisms such as mold (chlorine bleach, for example) is not recommended as a routine practice during mold cleanup. Read: What are the Basic Mold Cleanup Steps?
Is a biocide a disinfectant?
Disinfectants are generally classified as biocides, such as hand disinfectants effective against coronavirus. Biocidal products are substances with general or specific action against harmful organisms, including viruses or fungi.
What is the difference between biocide and biocidal product?
When discussing biocides a distinction should be made between the biocidal active substance and the biocidal product. The biocidal active substances are mostly chemical compounds, but can also be microorganisms (e.g. bacteria).
What are the different types of water injection systems?
The portfolio of solutions is extensive, covering collective expertise in a variety of operating environments and water types, including ocean, river, aquifer, and produced water for reinjection. Water management for oil and gas production and processing is challenging. High-quality, cost-effective, reliable, and environmentally
What does the US Environmental Protection Agency mean by biocide?
The US Environmental Protection Agency (EPA) uses a slightly different definition for biocides as “a diverse group of poisonous substances including preservatives, insecticides, disinfectants, and pesticides used for the control of organisms that are harmful to human or animal health or that cause damage to natural or manufactured products”.
Who are the leaders in water injection systems?
Solutions from front-end concept to complete turnkey supply For more than 30 years, Schlumberger has been a leader in designing turnkey water injection systems. Our experience extends from offshore to onshore applications, including fixed structures and floating production facilities. The portfolio of