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An effluent before it is to be discharged has to be treated to kill its hazardous effects. If an effluent is acideic , than it has to be neutralized using some base like hydroxides to make it neutral and if its too basic then Sulphuric acid is added to make it neutral. ALso floculants and co-agulants are also used to remove the impurities and solid wastes present in the liquid.After that many pH test,conductivity tests and its concentration is examined before it is discharged. All this is carried out in ETP plant.
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What safety precautions should be taken before cleaning a heat exchanger?
Prior to cleaning a heat exchanger, one should be sure to use hand, body, and eye protection. One should not conduct acid and bleach flushing simultaneously, as this produces a noxious gas which can be lethal if inhaled for an extended period of time.
What precaution should be taken carrying experiment using pH meter?
wash the pH probe with distilled water and then dry it clean with tissue paper before and after testing the pH.
What is the recommended iron content in the refinery water?
The recommended iron content in refinery water typically should be below 0.1 mg/L to prevent corrosion and fouling in refinery processes. However, this limit can vary based on specific refinery operations and local environmental regulations. Maintaining low iron levels is crucial for ensuring the efficiency and longevity of equipment and for meeting discharge quality standards. Regular monitoring and treatment may be necessary to achieve these levels.
How far should eyewash stations be from chemicals?
Eyewash stations should be no more than 10 seconds walk from where chemicals are used and splashed may occur.
How do you soften cement?
To soften cement, you can use a chemical softener or plasticizer, which is typically added to the mix before it hardens. These additives help reduce the viscosity of the cement slurry, making it easier to work with. Additionally, adding water can also help to achieve a softer consistency, but care should be taken not to exceed the recommended water-to-cement ratio, as it can weaken the final product. Once the cement has hardened, it cannot be softened.
Should water be treated before drinking it?
i guess
How long should you wait before painting treated wood?
You should wait at least 6 months before painting treated wood to allow it to fully dry and cure.
How long should I wait before painting treated wood?
You should typically wait at least 6 months before painting treated wood to allow it to fully dry and cure.
How long should I wait before staining treated lumber?
You should typically wait at least 6 months before staining treated lumber to allow it to fully dry and settle.
How long should treated lumber dry before painting?
Treated lumber should dry for at least 6 months before painting to ensure proper adhesion and longevity of the paint.
How long should treated wood dry before staining?
Treated wood should dry for at least 6 months before staining to ensure proper adhesion and longevity of the stain.
How long should I wait before staining treated wood?
You should typically wait about 6 to 12 months before staining treated wood to allow it to fully dry and settle.
How long should you wait before painting pressure treated wood?
You should wait at least 6 months before painting pressure treated wood to allow it to fully dry and cure.
How long should you wait before staining pressure treated wood?
You should wait at least 6 months before staining pressure treated wood to allow it to fully dry and cure.
How long should I wait before painting pressure treated wood?
You should wait at least 6 months before painting pressure treated wood to allow it to fully dry and cure.
How long should I wait before staining pressure treated wood?
You should wait at least 6 months before staining pressure treated wood to allow it to dry and cure properly.
How long should treated wood dry before painting it?
Treated wood should dry for at least 24-48 hours before painting it to ensure proper adhesion and a long-lasting finish.
