ZLD Industry: Sludge and Concentrates


In general, most companies have traditional evaporation systems. Although taking out a considerable quantity of water, the sludges and concentrates are still left with a high concentration of water.
After conducting this evaporation process, an external waste managing company is responsible for removing the sludges and concentrates. Not only does this service add a significant cost but also a complex administrative effort, which both can be avoided by eliminating the transport of water.


The IKERA RD8 plants can separate pure water from industrial residual water, sludge or concentrates up to 99.8%, leaving the solid with a humidity level as low as 0.2%.

Therefore, after processing, only a minimal fraction of solid residue is left. The pure water obtained can easily be reused in the same industry. In some cases the solids can also be reintroduced. If this is not a feasible option, the material will be removed by a waste managing company.

VOCS can also be recovered, just like oils.



Thermal energy is the main source of energy used, which can be generated from both non-renewable sources and renewable sources such as CSP, MINI-CSP, FVT, geothermal, biomass, waste heat or a combination of the above mentioned.

The residual water or concentrate first flows into a tank in which we ensure the homogenisation of the residue which varies according to the residue and the composition of it.

The residual water then continues through the IKERA RD8 physical reactor in which only H2o evaporates to be subsequently condensed and reintroduced in the industry or discharged into the network depending on the parameters of spill.

All the solid particles, adjusted  to a humidity level as low as 0.2%, are taken out of the reactor and are ready for storage, use, or disposal.

Oils can be left as part of the dry particles or separated as a third product of IKERA RD8 Technology.

Due to the different boiling temperatures of the VOC, they can be evaporated and recovered or left with the solid part or mixed with the pure recovered water.
Nitrogen from pig manure can be mixed with the pure water. This nitrogenous water is then ready for agricultural use.

Some industries that can benefit from this technology are electroplating, pharmaceuticals, logistics (ballast water), paints and varnishes, automotive, cosmetics, food, pulp and paper, energy, textiles and chemicals.


We have successfully carried out viability studies into more than 50 industrial residual waters, sludges and concentrates.

The IKERA RD8 technology is available in mobile or fixed units, complete with on-site wastewater and concentrate evaporation management service, reducing or eliminating the need for a waste manager. Currently only in Spain.

We are looking for investment funds and industrial partners to expand globally.