What are the CPCB Guidelines for caustic soda industry ETP Plant?
Caustic soda (often known as NaOH) is manufactured as a liquid. These are created by sending a current through brine (common salt dissolved in water). This is known as electrolysis, and it has been used for over 120 years.
Let’s understand CPCB guidelines for caustic soda industry effluent treatment plants.
CPCB Guidelines for caustic soda industry effluent treatment plants
1: Total concentration of mercury in the final effluent = 0.01
2: Mercury bearing waste-water generation (flow) = 10 kilolitres/ tonne of caustic soda produced.
3: pH = 5.5 to 9.0
Final effluent is the combined effluent from (a) cell house, (b) brine plant, (c) chlorine handling (d) hydrogen handling (e) hydrochloric acid plant.
What is the function of caustic soda in water treatment?
By adding this salt to the water, the amount of acidity and alkalinity increases, causing the intensity of dangerous compounds to drop and the water to be filtered. Caustic soda solution is sometimes injected into anionic resin tanks; in the presence of these resins, sodium hydroxide can improve their characteristics.
Caustic soda in drinking water treatment
The role of this chemical in the treatment of drinking water is similar to the way mentioned. It is critical to assess the level of caustic soda after the treatment stage, and before ingesting it. Excessive levels of these compounds induce a variety of ailments in humans, as well as substantial skin damage.
How do you get caustic soda out of water?
We can use a 1M hydrochloric acid solution to clean and eradicate sodium hydroxide, and other residual sodium in water. Metal particles remaining in water can also be eliminated using this procedure. The use of ion-exchange resins to remove remaining sodium hydroxide, destroys caustic soda.
Sodium hydroxide raises the pH of water, which causes metals to become less soluble, gain weight, and settle. Sodium hydroxide also has several advantages for usage as an acidity regulator and purifier. It dissolves easily in water, is inexpensive, and can react with less acid to precipitate salt. This mineral has become a very valuable substance in the water treatment sector; its high solubility makes it simple to utilize and hence chosen over less expensive minerals such as calcium hydroxide (lime).
Caustic soda and other alkaline salts are used to control water acidity and in the water treatment sector. The acidity can have destructive impacts on water transportation infrastructure, as well as detrimental effects on consumer health.
Metals in the pipeline system can dissolve in acidic water, causing corrosion and perforation of pipes, fittings, pumps, and other water transfer equipment. Metals dissolved in water can also be harmful to one's health. But, there are certain disadvantages of using excessive caustic soda for water treatment. Therefore, its limits should be kept in mind.
How can we assist?
Netsol Water offers a wide range of sophisticated solutions, such as water softeners, wastewater treatment plants, sewage treatment plants, water treatment plants, RO Plants, as well as effluent treatment plants for various industries, including caustic soda industry.
We also educate our clients on how to avoid water pollution, by employing a long-term approach and cutting-edge wastewater treatment procedures.