Betaqua Electrochlorination System
PT Beta Pramaesti Asia
What is Electroclorination?
Electroclorination produces Sodium Hypochlorite, on-site and as needed, with no additional materials or special treatment required. The electric current passes through the seawater by the MMO Anode. Now, electrolysis produces Sodium Hypochlorite which is the main product of the reaction. Hydrogen gas, as a by-product of the reaction, will be separated due to its low gravity. The Electrochlorination reaction can be formulated as below:
NaCl + H2O + ENERGY -> NaOCl + H2
Technically, Electrolysis takes place in an undivided cell when a DC passes through a saltwater solution (Seawater or brine solution):
At the Anode: Oxidation of chloride ions to produce chlorine
At the Cathode: Reduction of water to produce sodium hydroxide (NaOH) and Hydrogen (H2).
The liberated chlorine reacts with sodium hydroxide to produce sodium hypochlorite (NaOCl) immediately.
Sodium hypochlorite
Sodium Hypochlorite, also known as Hypo, Bleach, or Liquid Chlorine, is a strong oxidant used worldwide for water chlorination. NaOCl or Sodium Hypochlorite is generally efficient in:
- Anti-biofouling to prevent the so-called sliming phenomenon, or the growth of mussels/barnacles
- Drinking water disinfection
- General anti-bacterial treatment of Process Water
- Chemical treatment that would occur in bleaching, iron, or manganese removal
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What is the Electrochlorination process?
The electrochlorination process is called an electrolysis process where sodium hypochlorite is produced from salt water due to the current flowing to the anode and cathode (electrodes) when salt water passes through a plate that has been connected to a direct electric current, the electrolysis phenomenon takes place as follows:
- NaCl breaks down into Sodium (Na+) and Chlorine (Cl-) ions
- Water breaks down into Hydrogen (H+) and hydroxide (OH-) ions
The electrode attracts ions in such a way that positively charged ions tend to move to the negative (cathode) and negatively charged ions lean towards the positive (Anode).
On the Anode side, the accumulation of Cl- produces chlorine gas (Cl2)
- 2 Cl- → Cl2 + 2 e-
On the Cathode side, Hydrogen gas will be generated
- 2 H2O + 2 e- → H2 + 2 OH-
The OH- generated is free to diffuse to the anode and react with Na+.
The overall reaction is as below;
- 2 NaCl + 2 H2O → 2 NaOH + H2 + Cl2
Finally, hypochlorite on the anode side will form as a result of the interaction between chlorine gas and sodium hydroxide
- Cl2 + 2 NaOH → NaCl + NaClO + H2O
As a result of the above reaction, a low concentration of sodium hypochlorite (Product) and also hydrogen (By-product) are produced. The product as a disinfectant will be stored in a hypochlorite tank to be injected into the main stream to disinfect harmful micro-organisms, viruses, and bacteria present in the water, through pipelines to ensure the water is safe for consumption.
The comparative advantage of low concentration sodium hypochlorite is that it offers the most reliable solution to the challenges crossed by "toxic by-products" and "staffing needs" compared to conventional chlorination methods including commercial sodium hypochlorite and chlorine gas, where large concentrations are considered hazardous and create unsafe THMs. Therefore, Electrochlorination produces Sodium Hypochlorite as an effective disinfectant and is an alternative to dangerous and highly concentrated commercial chlorine products, e.g. gaseous chlorine, commercial hypo, and dry chlorine (granular calcium hypochlorite).
ULTRANODE electrochlorination offers a safe, economical and independent solution with the following priorities;
- On-site generation of hypochlorite: No transportation
- On demand: when needed
- No bulk storage: Safety
- Basic/safe inputs: water and salt or seawater + electricity
Betaqua Electrochlorination System
Betaqua Electrochlorination System is a system used to produce chlorine from seawater or salt water through electrolysis process. It is often used in water treatment applications, particularly for disinfection and prevention of biological growth in water distribution lines, swimming pools, and wastewater treatment facilities. The system uses saline solution as raw material and through an electrochemical process produces active chlorine that effectively kills microorganisms.
The advantage of an electrochlorination system like Betaqua's is its ability to produce chlorine on site, reducing the risks associated with the storage and transportation of hazardous chemicals. The process is also more environmentally friendly as it only uses salt and water as the main raw materials.
Its main applications include:
- Drinking water and industrial water treatment.
- Protection of water distribution networks from biofouling.
- Disinfection in wastewater treatment facilities.
- Use in swimming pools and other recreational applications.
The system is a reliable and efficient option to ensure hygienic and safe water quality.