An iron and manganese abatement system:
This system must guarantee that the iron and manganese content is reduced to acceptable values for the membranes of the new reverse osmosis plant.

The deferrization and demanganization operations must be carried out separately (in cascade). And all necessary equipment must be provided to perform the two operations separately such as:

- An air injection kit for oxidation and an electric dosing pump with agitator tank for demanaging.

- HD polyamide tanks with epoxy treatment inside.

- Cartridge filters, sand filters, multimedia filters...

- Countercurrent automatic washing machines with the possibility of manual washing.

- Control panels (including pilot solenoid valves, pneumatic washing valves, control pressure gauges, etc.).

One Pump Skid (2x100%): A two pump skid will be provided (one pump on, the other on standby). Pumps will be selected based on the aggressiveness of the water after aeration.
A coagulant-flocculant injection system (2x100%):

The injection of these agents will be controlled by the flow of water at the outlet of the pumps. The dosing system is completed with the necessary accessories for the proper functioning of the operation (bottom valve, level probe, injection valves, etc.)

A chlorine injection system to fight against biofouling:

Chlorine dosing must be precise to avoid oxidation of the membrane material even after dechlorination.

Connection accessories and valves:

Such as: pressure and temperature measurement and analysis sampling.

One chemical injection stage (dechlorination/antiscaling/pH adjustment): This injection stage will be mounted on a stainless steel frame and will be composed of three (03) electromechanical diaphragm metering pumps, equipped with precise flow control. Each pump will be associated with a storage capacity of at least 100 L with its agitator (03 tanks in total).
The water will go through three chemical injection operations that are:

- Upstream of the 5 micron filter door, sodium metabisulfite will be injected to perform dechlorination.

- The injection of an antiscaling product downstream of the 1 micron filter door to prevent the precipitation of iron oxides and the calcification of the osmotic membranes.

- The injection of 10% concentrated liquid soda so that the water mixture is balanced (neither corrosive nor encrusting). This injection will be carried out in a mixing chamber in which a pH probe will be placed.