Arsenic Removal System from Drinking Water, Wastewater
How is Analysis by Region Done for Arsenic Removal Systems?
Arsenic is a major human health risk in Southeast Asia, especially in the Mekong Delta, which is the subject of a new study. In addition to the well-documented risks associated with drinking water contaminated with As, there are other potential hazards associated with groundwater exploitation in the area. This includes land subsidence.

In particular, a significant amount of groundwater is extracted from deep aquifers, and these are contaminated by a variety of factors. These include compaction of the underlying clays, the presence of competing ions, and pumping, which promotes the release of As.

One of the simplest yet most important steps in addressing this threat is to implement a suite of measures to minimize arsenic contamination. These measures include: minimizing human exposure, managing the quality of surface water, and improving the aquifer’s resilience.

The most obvious example is a point-of-entry reverse osmosis system. This type of treatment is effective at reducing dissolved arsenic to well below the safe limit. However, in comparison to other types of treatment systems, such as whole house POE and RO systems, point-of-entry systems have a lower performance rate. Hence, a more efficient and effective approach would be to consider a holistic approach that incorporates all relevant elements into one system.

As the name implies, the aforementioned is a fancy little device that consists of a series of filtration systems, including an aeration tank to remove precipitates, a filtration column with an ultrafilter, and a NLTT to adsorb As. A household filter treatment system with a NLTT was tested to assess the efficiency of As removal.

The best way to sum it all up is to say that while there are a number of important health and environmental benefits to installing a household filter treatment system with a NLTT, the most impressive result was the reduction of well-water As concentration by more than seven times. This is a significant health improvement and should be a consideration when choosing an arsenic removal solution.