SOIL GROUP has integrated, developed, implemented and operated water treatment plants in various sectors for over 20 years: mining, energy (combined cycle, solar thermal, biomass, biofuels), waste, steel, food processing, chemical and petrochemical industry, urban water, aerospace, glass, textiles, paper and cardboard, plastics, automotive…
Experience and constant research have enabled us to know how to treat water in each case.
Our R&D&I develops pilot plant studies that provide the best solution to the problems related to water for every client situation.
Reverse Osmosis: Process through which, a high percentage of salts and metals are removed.
Sand: Process in which water passes through a bed of filter material of the same or different granular size.
Disc: Performed by, slotted plastic plates placed one above the other.
Mesh: Performed by, slotted plastic plates placed one above the other.
Flow from outside to inside. Minimum rejection.
“Air Scrubbing” Cleaning System. Very effective for High Solid Concentrations.
Fully Automatic System. Hollow fiber.
Removing contaminants through ion exchange with other ions of the same polarity, attached to an immobile solid particle base.
Electrodeionization (EDI): A combination of membranes and ion exchange resins, and a DC electrical field to ionize the water.
Ozone: Elimination of pathogenic organisms via direct oxidative destruction of cell walls.
Ultraviolet: Alteration of the microorganisms’ DNA by means of ultraviolet radiation.
Chlorination: Oxidation of the contamination by means of chlorine or chlorine compound dosing.
A set of technologies applied to the re-use of wastewater that has been previously purified by a biological aerobic treatment. The above mentioned technologies are:
Aerobic reactors in which water clarification is performed by using ultrafiltration membranes with pore sizes that are inferior to 0.05 microns. The ultrafiltration stage improves the performance of the treatment and allows us to achieve very high biomass concentrations, reducing the amount of sludge and space required.
SOLUTIONS FOR REUSE, RE-INJECTION INTO THE AQUIFER AND AIMED AT ZERO WASTEWATER DISCHARGE
As a technological integrator, SOIL GROUP combines ultrafiltration technologies, multi-stage reverse osmosis and multiple effect evaporation systems.
This solution makes it possible to obtain high water recovery rates (> 95%), free from conductivity and that comply with RD 140/2003 Drinking Water.
High degree of automation and reasonable operating costs.
*Image: Contact Water Treatment Plant for Mining Complex “Cobre Las Cruces”
We also provide solutions for water purification stations (DWTP) for large population centers to small urban agglomerations or industrial plants.
We deal with water desalination solutions aimed at various purposes.*Image: Sand filtration system
Organic compounds are converted into biogas in the absence of oxygen. There are various types of reactors depending on the specific characteristics of the waste to be treated.
Systems that allow us to adapt the wastewater to the central treatment stage of the industrial water treatment station.
They consist of the following:
- Refining and sifting: removing coarse solids
- Degreasing: elimination of grease via a flotation treatment
- Homogenization: effluent accumulation to regulate flow and load
The physico-chemical treatments induce chemicals to interact with pollution by adding particulates (chemical stage) that can be separated from the stream by settling or flotation (physical stage).
- In effluents with a high content of solid and grease
- In effluents with high load variability
- Practically in all the industrial sectors
- High performance in the elimination of oils and grease
- These treatments only need reduced space
Aerobic biological treatment
Depending on the sector, the following apply:
- Biological plants with sludge activated by decanting
- Biological plants with float activated sludge
Applications: All industrial and urban sectors
Advantages: Simply operated
Aerobic batch bioreactors; where the clarifying process is performed in the reactor itself by decantation, so that the volume and discharge operating cycle is performed over time. This design allows the use of nutrient elimination protocols in the same volume with the same aeration/stirring systems.
Applications: All food-processing sectors / Problems of NitrogenAdvantages: Higher performance and lower space requirements/ Greater flexibility and adaptability
SOIL GROUP specializes in the development of urban WWTPs. Its implementation combines the most suitable technologies to the specific needs of flow and the characteristic of the wastewater in each case: Irrigation of green areas, golf courses, greywater, etc.
We develop solutions that integrate the pretreatment stage, biological stage and secondary settlement. These projects can include a tertiary treatment stage that permit the reuse of water for other purposes.
MBR systems enables an increase in treatment flow capacity without increasing the space required by the WWTP and obtain a high quality treated water.
Bottom cutoff, water tailings, tailings leachate, contaminated stormwater and pond water accumulation.
Congenital waters: resulting from the extraction of oil and gas from hydrocarbon fields.
Leachate from Landfills.
Digestate effluent from biodigestion waste plants
Concentrates from Osmosis plants.
MPCR. Disc Osmosis
A process that integrates different filtration stages according to purification needs. With this type of osmosis we can obtain rejections below 10%.
Process that consists of purification steps in series: vacuum forced evaporation and conventional aerobic biological treatment.
These processes achieve a strong synergy with which treatments yield high performances.
Multiple effect evaporation
A process similar to Bio-distillation evaporation, with the peculiarity that there is higher energy efficiency.
They are applied to higher flows than those of Bio-distillation.
Mechanical dehydration of the excess sludge generated in the waste treatment. Sludge can be originated in biological or physicochemical processes.
Thermal Drying (Watromat), consists of dry air generators, an ideal solution for drying cakes from the filter press.
Atad: The ATAD process (Autothermal Thermophilic Aerobic Digestion) is a technology that can simultaneously achieve high degrees of stabilization and the reduction of pathogens in sludge generated in Wastewater Treatment Plants, manure, septic tanks, cesspools, etc. As a result, the treated sludge reaches the highest quality level of US-EPA and European Directives, presenting fewer restrictions on end use, as for example agriculture.
Compost: Aerobic fermentation of the organic matter, produced by the combined action of various groups of microorganisms, resulting in a mixture of CO2, H2O and humus. Biomethanisation: Biodegradation of the organic fraction with generation of biogas.