1. Most effective & long lasting technology available till date. With regular treatment, the arsenic level will remain Below Detectable Limit. Actually, if the plant is being run for a few years, then the total aquifer will undergo oxidation & the water quality will improve considerably.
2. It is also the easiest technology around. No costly chemicals & complex tray systems & delicate filters. It is all about pump set & showerheads. Every plumber & electrician in the village can do the operation & maintenance once they are given a simple training.
3. The SUSTAINABLE way of treating arsenic contaminated water. This process not only removes arsenic & iron from the water pumped out through the system, but also treats the contaminated aquifer water. Thus, the community around the plant gets benefited in the years to come.
4. Easy Operation & Maintenance:
a. The whole system is very cheap to operate & maintain.
b. Either an individual owner or Self-help groups under Panchayat of the village will be able to operate & maintain it.
c. This will provide a part time job to a few individuals of the village on hourly basis. Every day, 2 hrs is required for operation. Three or four persons in the village can be trained up so that the plant can be operated in rotation basis under any circumstances even in absence of any one operator. They will be paid accordingly by the Owner/Panchayat at the end of the month.
d. Even the illiterate village plumbers & electricians are able to do the maintenance job once they are briefed about the whole system & given a basic training.
5. More there is iron in water, more effective the process is. The arsenic gets co-precipitated with the precipitated iron in the aquifer itself & doesn't get a chance to come to the surface. Fortunately enough, the ground water in the Bengal Delta region in general, has a high concentration of iron.
6. Waste disposal is not a problem. In the 1st two months, only Fe(III) and a little As(V) precipitates are to be discharged out of the plant. After that, very little waste is generated (mainly Fe(III)) since iron, arsenic & other impurities like Mn, nitrates, nitrites, etc gets bounded under the soil in the aquifer itself. They cease to be public menace by coming out of their place.
7. Large supply of Arsenic free water can be obtained by running the treatment cycle for more than once per day.
