Metals Treatment for Water
When it comes to treating arsenic, lead, iron, and other metals, there are several ways to go about it. Being your water treatment expert, we can work with any and all of these ways. We will work with you to examine the application, your goals, and then help you select a method.
Metals Treatment through Chemistry
All metals can be treated with the tried and true methodology of simple precipitation, coagulation, settling and filtration. This method is the most reliable, and the most cost effective an efficient for the long term. This is especially true when multiple metals may be present and/or the water coming in is subject to changes.
Metals Treatment without Chemicals
If iron and manganese are part of the mix, Theia offers a low cost, low maintenance system for complete oxidation of metals without the use of chemicals. This system can be incorporated without one of our OxyStrip Systems or as a stand-alone system. If Iron is present along with other metals, this oxidation system can be the first part of the system and co-precipitation of iron and arsenic can further reduce the operating costs.
Metals Treatment through Adsorption
For lower levels of specific metals, sometimes the easiest solution is to apply a media that has an affinity for the metal to be removed. This technology is effective for shorter duration projects where media use does not become an issue. It is also effective where removal of specific metals is required to meet very tight standards and you do not have the time or means to construct a longer term system. Some of these medias can be affected by pH as well as the presence of certain other metals or materials in the water.
Metals Treatment through Ion-Exchange
Another tried and true technology, this approach is effective on certain metals and even a group of metals at once. This media can often be regenerated on site but the water from this regeneration must be dealt with and can represent a hazardous waste. The media can be disposed of after use making it more similar to the adsorption media. These resins are affected by pH as well as the presence of chlorides and sodium and calcium in the water.
We offer all three approaches and will work with you to find the best one for your application and your project. We can provide turnkey design & construction of systems for any size application. We can also implement systems designed to work in the field with temporary treatment systems. These systems are offered with whatever level of control and automation is required.
Once the metals are removed from solution, we provide clarifiers, bag/cartridge filters, as well as sand and multimedia filters.