We manufacture and market chemical products for water treatment
We offer an exclusive range of chemical product which is already one of the most complete on the market, both for wastewater treatment plants, as well as for supply water or cooling circuits.
We feed your plant with the right chemical product
We are involved in the construction and development of the plants, so we know the best possible formula to supply these facilities with the appropriate chemical product.
Wastewater Treatment
01.
Defoamers
02.
Odor inhibitors
03.
Coagulants
04.
Flocculants
Process water
01.
Anti-fouling agents
02.
biocides
03.
Reverse osmosis (RO)
04.
Chlorine reducer
Drinking water treatment
01.
biocides
02.
Coagulants
03.
Neutralizers
Circuits and boilers
01.
Anti-fouling agents
02.
Chemical cleaning
03.
O2 reducers
Legionella treatment
01.
Anti-fouling agents
02.
biocides
03.
Biodispersants
We'll advise you so you can find the best combination
Innovation and experience at the service of a new coagulant unique in the industry
"A technological development allows treated industrial water to achieve a quality equivalent to that of human consumption."
Chemicals for industrial water treatment
The use of chemicals for water treatment It is one of the fundamental pillars for ensuring efficiency, safety, and regulatory compliance in any industrial plant. From the removal of impurities to the prevention of corrosion and limescale deposits, each product family plays a specific and essential role in the water cycle.
At SITRA, we offer customized chemical solutions tailored to the water characteristics and operational requirements of each facility. We work with coagulants and flocculants, antiscalant products and biocides, pH neutralizers and regulators and corrosion inhibitors, among others, to ensure the optimal performance of each treatment process.
Figures that support us
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equipment
How can our water treatment chemicals help you?
The correct selection and application of chemicals in industrial wastewater treatment allows for a substantial improvement in the performance of any plant or facility. These are the main advantages our clients gain by working with SITRA:
Efficiency in the removal of impurities
The coagulants and flocculants They allow suspended particles to clump together and settle quickly and efficiently, facilitating their removal and improving the clarity of the treated water. This is especially critical in industries such as food processing, chemicals, and textiles, where water quality directly impacts production.
Improved facility performance
The use of antifouling It prevents the formation of limescale and other salt deposits in pipes, heat exchangers, and cooling towers, reducing the need for unplanned maintenance shutdowns and extending the lifespan of the equipment.
Compliance with environmental regulations
The correct application of biocides and pH regulators ensure that the treated water complies with the discharge limits required by current legislation —including Royal Decree 1085/2024 and Directive 91/271/EEC—, avoiding penalties and reinforcing the company's corporate image.
Reduction of operating costs
The corrosion inhibitors They protect the hydraulic infrastructure and reduce the costs associated with repairs and equipment replacements. Combined with an optimized treatment program, they help to decrease total reagent consumption and maintenance expenses.
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Why choose our chemicals for your industrial water treatment?
At SITRA, we don't offer off-the-shelf chemical products. We design customized treatment programs, supported by a specialized technical team and continuous process monitoring. These are the reasons why our clients choose us:
Personalized needs analysis
We study the physicochemical properties of water—hardness, pH, conductivity, turbidity, presence of suspended solids and organic matter—and the specific needs of each client to offer fully customized solutions. There is no one-size-fits-all treatment; each installation requires its own approach.
Use of cutting-edge chemicals
We use state-of-the-art products to guarantee a significant improvement in the quality of treated water and in process efficiency. We work with high-performance formulations that minimize environmental impact and maximize treatment effectiveness.
Continuous monitoring and necessary adjustments
We constantly monitor the process and adjust the doses of products —coagulants, flocculants, biocides, antiscalants or pH regulators— according to variations in water quality or in the operating conditions of the plant.
Continuous process improvement
We specialize in optimizing water treatment processes, reducing operating costs, and increasing facility efficiency. We regularly analyze results to identify opportunities for improvement and propose more efficient solutions.
Frequently asked questions about water treatment chemicals
What is a flocculant and how is it used in industrial water treatment?
A flocculant is a chemical compound, usually a high molecular weight polymer, that facilitates the grouping of suspended particles in water to form larger flocs that can settle or be filtered easily.
Flocculants are normally used after coagulation —a process in which coagulants such as aluminum or iron salts are added to destabilize particles— and allow for accelerated settling in clarifiers or thickeners.
Its application is fundamental in sectors such as paper and pulp, mining, the agri-food industry and wastewater treatment plants.
What chemicals are used to treat wastewater?
Industrial wastewater treatment may require a combination of different products depending on the contaminants present.
The most common ones are coagulants and flocculants (to remove suspended solids and colloids), pH regulators (to adjust the acidity of the water before or after treatment), biocides (to control microbiological growth), antiscalants (to prevent deposits on membranes and pipes), heavy metal precipitants and activated carbon (to absorb organic micropollutants).
The appropriate selection depends on prior water analysis and the discharge limits required by regulations.
What is a pH neutralizer and when is it needed?
A pH neutralizer is a chemical—acidic or alkaline—added to water to adjust its acidity or alkalinity to levels safe for industrial processes or discharge into the receiving environment. The pH of the water directly affects the effectiveness of other treatments and the corrosiveness of the system.
In the chemical, food, and electroplating industries, it is common for effluents to have a pH outside the neutral range (6,5–9), requiring a neutralization stage before discharge. At SITRA, we automatically size and dose these products to guarantee continuous and precise control.
What are the differences between chemical water treatment and physical treatment?
Physical water treatment includes processes such as filtration, sedimentation, flotation, and membrane separation—ultrafiltration, reverse osmosis—which do not involve chemical reactions. Chemical treatment, on the other hand, introduces products such as coagulants, flocculants, biocides, and corrosion inhibitors to modify the water's properties through chemical reactions.
In practice, most industrial wastewater treatment plants combine both approaches —along with biological treatments— to achieve the desired result with maximum efficiency.
Which industries can benefit from the use of chemicals for water treatment?
Virtually any industrial sector that generates wastewater or uses water in its production processes can benefit. Some of the sectors where the application is most common include: the food and beverage industry, the chemical and petrochemical industry, the textile sector, the paper industry, electroplating and surface treatments, power generation plants, the pharmaceutical industry, mining, and steelmaking.
In each case, the contaminant profile and regulatory requirements determine the most appropriate treatment program.
How do I select the right chemical product for my company?
The selection requires a detailed preliminary analysis: physicochemical characteristics of the water (hardness, pH, conductivity, turbidity, presence of metals or specific contaminants), type of production process, volume of water to be treated, quality objectives and applicable regulations regarding discharges.
Sin embargo, esta caracterización solo marca el punto de partida. Para determinar qué producto y qué dosificación funcionan realmente en cada caso, en SITRA realizamos jar-tests: ensayos de laboratorio en los que se prueban distintos coagulantes, floculantes o combinaciones de productos, a diferentes dosis, sobre una muestra real del agua del cliente.
Este ensayo permite observar directamente cómo reacciona el agua ante cada producto: velocidad de floculación, tamaño y sedimentación del flóculo, claridad final del agua, y así comparar alternativas antes de aplicar nada en planta.
De esta forma, el diagnóstico inicial (parámetros y objetivos) se traduce en una decisión basada en evidencia experimental, y no solo en criterios teóricos. El resultado es una propuesta de tratamiento con el tipo y la dosificación óptima de productos: coagulantes, floculantes, antiincrustantes, biocidas, reguladores de pH e inhibidores de corrosión, validada específicamente para el agua y el proceso de cada cliente.
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