Betaqua Electrochlorination System

PT. Beta Pramesti Asia

What is Electrochlorination?

Electrochlorination produces Sodium Hypochlorite, on-site and as needed, with no additional materials or special treatment required. Electric current passes through seawater via an MMO Anode. Electrolysis then produces Sodium Hypochlorite as the main product of the reaction. Hydrogen gas, a by-product of the reaction, is separated out 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 DC passes through a salt water 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 immediately produce sodium hypochlorite (NaOCl).

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 antibacterial treatment of Process Water
• Chemical treatment that takes place in bleaching, iron removal, or manganese removal

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What is the Electrochlorination process?

The electrochlorination process is an electrolysis process where sodium hypochlorite is produced from salt water due to the current applied to the anode and cathode (electrodes) when salt water passes through plates connected to a direct electric current. The electrolysis phenomenon proceeds as follows:

• NaCl dissociates into Sodium (Na+) and Chlorine (Cl-) ions
• Water dissociates into Hydrogen (H+) and hydroxide (OH-) ions

The electrodes attract the ions in such a way that positively charged ions tend to move to the negative electrode (cathode), and negatively charged ions tend toward the positive electrode (anode).

On the Anode side, the accumulation of Cl- produces chlorine gas (Cl2)

• 2 Cl- → Cl2 + 2 e-

On the Cathode side, Hydrogen gas is produced

• 2 H2O + 2 e- → H2 + 2 OH-

The OH- produced is free to diffuse to the anode and react with Na+

The overall reaction is as follows:

• 2 NaCl + 2 H2O → 2 NaOH + H2 + Cl2

Finally, hypochlorite on the anode side is formed as a result of the interaction between chlorine gas and sodium hydroxide

• Cl2 + 2 NaOH → NaCl + NaClO + H2O

As a result of the reactions above, low-concentration sodium hypochlorite (Product) and hydrogen (By-product) are produced. The product, as a disinfectant, is stored in a hypochlorite tank for injection into the main stream to disinfect harmful microorganisms, 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 with conventional chlorination methods including commercial sodium hypochlorite and chlorine gas, where bulk 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, such as chlorine gas, commercial hypo, and dry chlorine (granular calcium hypochlorite).

ULTRANODE Electrochlorination offers a safe, economical, and independent solution with the following priorities:

• On-site hypochlorite generation: No transportation
• On demand: when needed
• No bulk storage: Safety
• Basic / safe inputs: water and salt or seawater + electricity

Betaqua Electrochlorination System

The Betaqua Electrochlorination System is a system used to produce chlorine from seawater or salt water through an electrolysis process. It is widely 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 brine solution as the raw material and, through an electrochemical process, produces active chlorine that effectively kills microorganisms.

The advantage of an electrochlorination system such as Betaqua’s is its ability to generate chlorine on site, reducing the risks associated with the storage and transportation of hazardous chemicals. The process is also more environmentally friendly because it only uses salt and water as its 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.

This system is a reliable and efficient choice for ensuring hygienic and safe water quality.