As the water flows through the anode/cathode channel, a low voltage DC currents applied. When this happens, the electrolysis is triggered and sodium hypochlorite is instantly produced as well as hydrogen gas (H2). The hydrogen rich sodium hypochlorite then travels to a tank that removes the hydrogen gas. The dehydrogenization mechanism varies from device to device but the process is generally the same. After hydrogen has been removed from the solution, it is stored in a tank as the finished product.[1] No chemicals other than ordinary salt, or sodium chloride (NaCl), are used throughout the entirety of the process. Although the actual chemical processes involved are complex, they can be simply represented by the following equation:
In words this reads, energy is added to sodium chloride (table salt) in water, resulting in sodium hypochlorite and hydrogen gas.
Seawater
On occasion, companies will want to use seawater for this process due to its extreme low obtaining cost. The seawater used is usually brackish water or brine (i.e. a solution with >0.5% salinity). In these cases, random chemicals may be introduced into the system. These random chemicals pose no threat to the system however due to the simplicity of the process. The low voltage DC current that is applied will do only what it is intended to do, i.e. electrochlorination. The excess random chemicals are left untouched and can be easily discarded.
Products
The product of this process, sodium hypochlorite, contains 0.7% to 1% chlorine. Anything below the concentration of 1% chlorine is considered a non-hazardous chemical although still a very effective disinfectant. In addition, the sodium hypochlorite produced is in the pH range of 6-7.5. This means that the chemical is relatively neutral in regards to acidity or baseness. Also, at that pH range, the sodium hypochlorite is extremely stable and the electrochlorination extremely effective.
Applications
Drinking Water Local water treatment plants have began to evolve their technology over the years as health threats due to water contamination become more known including cholera, typhoid, and dysentery. to combat these threats, water treatment plants began to implement chlorination. Chlorination virtually wiped out both the spread and initial contamination of these diseases.
WE, AT VEDH TECHNO ENGINEERS PVT.LTD. ARE COMING UP WITH HIGH QUALITY COST EFFECTIVE ELECTROCHLORINATION SYSTEMS IN VARIOUS CAPACITY RANGES IN DUE COURSE OF TIME. |