Successful cases

Some examples of successful cases are explained bellow:
Adaptation of poorly-designed or obsolete installations
Type of industry: Winery

Problem: The effluent from a new construction WWTP does not satisfy the applicable legislation.

Solution: Study of: WWTP effluent, flows, loads and kinetic constants. The minimum elements that must be changed are indicated and the operation of the wastewater treatment plant is modified. In the subsequent controls was verified that the effluent satisfied the administrative requirements.

Conversion of a biologic Wastewater treatment to a Physical Chemical Wastewater treatment
Type of industry: Chemical

Problem: Change of production. The influent changed from biodegradable to non-biodegradable.

Solution: Analytical studies of the influent. Previous studies in pilot plant of the influent. The WWTP was modified to treat the wastewater in an appropriate physical chemical method.

Control of micronutrients:
Type of industry Pharmaceutical

Problem: Difficulties of biomass growth in the reactor.

Solution: Study of the influent and the active sludge generated. After check the appropriate micronutrients in pilot plant, the WWTP was complemented.

Implementation of pure oxygen

Type of industry: Winery

Problem: Important load peaks during the vintage which cannot be assumed by the WWTP.

Solution: With the analytical and kinetic data of the influent was calculated the necessary amount of oxygen during this period. The WWTP was complemented with industrial oxygen during the vintage.


Type of industry: Agricultural

Problem:  The increase of production let obsolete the WWTP installation.

Solution: With the analytical and kinetic data of the influent was calculated the necessary amount of oxygen and the costs. Finally, the WWTP was complemented with oxygen, and save the enterprise to make a major investment.


Type of industry: Textile

Problem: High urea amounts in the influent do not permit the administrative requirements.

Solution: Influent flows, loads and kinetics were determined. WWTP was studied and complemented with industrial oxygen. The subsequent controls verified the legislative compliance.

Inhibition of denitrification due to disinfectants

Type of industry: Agricultural

Problem: Partial inhibition of the nitrification. Lack of collaboration of the enterprise’s chemical products suppliers.

Solution: The analytical problem was found through the appropriate toxicity tests. A bibliographic research of the composition of the used products was done. All this products were tested. Finally, was found the disinfectant that caused the problem. With the substitution of this product the nitrification was recovered.

Treatment of influents with high ammonium ammounts

Type of industry: Agricultural

Problem: High ammonium amounts in the influent do not permit the administrative requirements.

Solution: Influent flows, loads and kinetics were determined. The minimum possible elements of the pre-existing installations were modified. Due to the WWTP’s configuration a conventional nitrification/denitrification system was used. The subsequent controls verified the legislative compliance.

Treatment of influents with high phenol ammounts

Type of industry: Chemical

Problem: Influents with high phenol ammounts.

Solution: Influent flows, loads and specific contaminants (phenols) and toxicity tests were studied analytically and in pilot plant. Kinetic constants were calculated and a mathematical modelization was performed to obtain the basic WWTP design model. Once the WWTP was built, we collaborated with the engineery for the initialization and we verified the legislative compliance of the WWTP.

Lamination of new dumping in biological treatment plants in operation.

Type of industry: Chemical

Problem: Occasional dumping from a new production.

Solution: A toxicity test of the dumping was performed. It gave us the capacity of the biological reactor to treat this dumping. With this data we program the treatment of this dumping in the WWTP.

Autoheated Thermophilic Aerobic Digestion (ATAD)

Type of industry: Alimentary

Problem: Important difficulties for the filtration of a purge sludge with a press filter.

Solution: Implantation of ATAD system for sludge treatment. The treated sludge can be directly used in agriculture because are composted and with no pathogens.

Effluent biodegradability improvement

Type of industry: Textile

Problem: Effluent with a refractory chemical oxygen demand (COD) does not satisfy the applicable legislation.

Solution: In a laboratory pilot plant were studied different solutions. Finally was used a little treatment with ozone before the biological reactor to improve the biodegradability and reduce the refractory chemical oxygen demand to the permitted levels.

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