WELL AND SURFACE WATER TREATMENT

At IDE we offer a complete range of treatment solutions:

Clarification

Clarifiers, being a primary part of any water treatment plant, work on a principle of gravity settling to remove suspended particles, which as a result reduces the turbidity and TSS of the raw water. Depending on the presence of inlet suspended solids, a coagulation and flocculation process can also be envisaged at the inlet of the clarifier. Settled solids from the underflow of the clarifier are collected and transported to the sludge treatment area. 

Lamella Clarifiers 

Lamella clarifier serves to remove heavy particles by settling into inclined plates. This separation method requires prior flocculation and coagulation steps. Lamella clarifier is designed to maximize the settling efficiency of suspended particles with minimal footprint. 

Multi-Media Filter (MMF)

A multi-media filter is used to reduce the level of suspended solids in process water by filtration through the granular media. The filtration degree of a multi-media filter depends heavily on the filter media and flow (velocity) through the filter. Gravity or pressurized filters are used for multi-media filtration and depend on feed water quality, quantity and intake location. As particles become trapped in the media, the differential pressure across the bed increases. High velocity backwash of the filter media is used to clean and revert the performance.

Ion-Exchanger (IX):

Ion exchangers (IX) are used to remove hardness or natural organic matter (NOM) present in the raw water. Based on the raw water analysis, IX uses suitable types of resins to exchange selective dissolved ions with any other ion. After the operating cycle, exhausted resin can be regenerated using chemicals. 

In general, softener (IX) is used to treat hardness (Ca & Mg Ions) present in the raw water, which can further prevent scale formation in the water distribution network.

Similarly, presence of NOM in raw water can contribute to unwanted taste and odor, brownish-yellowish color & even the bacterial growth in the water distribution system. Ion Exchanger (IX) is also a solution to treat NOM present in well water & in some cases, even without the use of chlorination. Consequently, this method can prevent the formation of disinfection by-products (DBYs).

Nano Filtration System:

Nanofiltration (NF), like RO, is a pressure-driven membrane separation process with the difference in the pore size of the NF membranes. NF membranes have larger pores, as compared to RO membranes, and show greater rejection of the divalent ions (such as Ca & Mg ions) as well as for the NOMs present in the raw water.

Lime Soda Softening

A chemical precipitation method to remove the hardness in the raw water. In this method, chemicals such as lime  (CaO/Ca(OH)2) and/or sodium carbonate (Na2CO3) is added to the raw water, based on the water chemistry, to remove the permanent as well as temporary hardness.

Stripping Tower (Degasser Tower) and Scrubbing Towers

Depending on the geography, H2S contamination in wells is a common challenge. Since H2S has a distinctive smell, and leads to corrosion in the water distribution network and has various health concerns, removing it is a necessity. Degasification is one of the most effective techniques to reduce dissolved gas such as H2S or CO2 from the raw water. Degasser towers use a packed bed vertical tower to reduce dissolved gas such as CO2, H2S from the raw water. In some cases, scrubbing of the removed gasses is required and a scrubbing tower is installed.