ACTIVITY AREAS

Treatments

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… 

Technological integration

Experience and constant research have enabled us to know how to treat water in each case.

Pilot capacity and customized studies

Our R&D&I develops pilot plant studies that provide the best solution to the problems related to water for every client situation.

WATER SUPPLY AND REUSE

aguas de aporteTECHNOLOGICAL CONTRIBUTION

Membranes

Reverse Osmosis: Process through which, a high percentage of salts and metals are removed.

Filtration

Sand: Process in which water passes through a bed of filter material of the same or different granular size.

Granulometry

Disc: Performed by, slotted plastic plates placed one above the other.

Mesh: Performed by, slotted plastic plates placed one above the other.

Ultrafiltration

Flow from outside to inside. Minimum rejection.

“Air Scrubbing” Cleaning System. Very effective for High Solid Concentrations.

Fully Automatic System. Hollow fiber.

Ion exchange

Removing contaminants through ion exchange with other ions of the same polarity, attached to an immobile solid particle base.

  • Limescale removers
  • Desmineralizadores
  • Electrodeionization (EDI): A combination of membranes and ion exchange resins, and a DC electrical field to ionize the water.

     

Disinfection technology

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.

REUTILIZATION TECHNOLOGY

Tertiary

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:

  • Filtration
  • Disinfection

MBR

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.

WATER WITH HIGH CONTENTS OF SALT AND HEAVY METALS

esquema_vertido_cero

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”  

WATER PURIFICATION

Potabilizacio_Filtros

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

INDUSTRIAL TREATMENT. MAIN TREATMENTS

Vinos&Bodegas_red

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.

 
Anaerobic biological treatment
Applications: Water purification in high loads sectors (beer, distillery, starch, conserves ...)  *Image: Biological Reactor in wine industry

Advantages:

  • - Minor operating costs and minimal sludge production.
  • - Minor space requirements.
  • - Reuse of Biogas (fuel).
Sectors:beer, brewery, canned vegetables, juices and beverages, sweets, yeast, rice and sugar
 

INDUSTRIAL TREATMENT. MAIN TREATMENTS

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Pretreatment

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

Physico-chemical treatmentbalsa


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).

agualimpia

Applications:

- In effluents with a high content of solid and grease
- In effluents with high load variability
- Practically in all the industrial sectors

Advantages:

- High performance in the elimination of oils and grease
- These treatments only need reduced space

Aerobic biological treatment

CONVENTIONAL

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

SBR
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 

URBAN WASTEWATER TREATMENT

OLYMPUS DIGITAL CAMERA

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.

HIGH LOAD: MINE, OIL & GAS

Alta carga. Aguas de mina

MINE WATERS

Bottom cutoff, water tailings, tailings leachate, contaminated stormwater and pond water accumulation.

OIL&GAS

Congenital waters: resulting from the extraction of oil and gas from hydrocarbon fields.

Polling water.

OLYMPUS DIGITAL CAMERA

WASTE

Leachate from Landfills.

Digestate effluent from biodigestion waste plants

 Concentrates from  Osmosis plants.

MPCR. Disc Osmosis

CTred

A process that integrates different filtration stages according to purification needs. With this type of osmosis we can obtain rejections below 10%.

Advantages:

  • Pretreatment is not required
  • High degree of concentration
  • Less fouling

 Bio-distillation Process

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.

SLUDGE TREATMENT

Minimization

watromat

Mechanical dehydration of the excess sludge generated in the waste treatment. Sludge can be originated in biological or physicochemical processes.

  • Centrifuges
  • Filters bands
  • Filter presses

Thermal Drying (Watromat),  consists of dry air generators, an ideal solution for drying cakes from the filter press.

Evaporación

MPCR Technology

Assessment

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.

COMPACT CONTAINERIZED PLANTS

Compact Containerized Plants   foto_Compacta_urbana

Solutions compact treatment plant waters, modular systems 

  • Cost reduction 
  • Lesser delivery 
  • Simple and economical transportation anywhere in the world.
  • easy assembly
  • Lower costs of civil works 
  • Greater flexibility than
    conventional solution