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Sewage treatment

1) DESIGN AND PROJECTS

•Preliminary projects: design calculations, construction plan implantation; budgets for urban treatment plants, industrial and water treatment plants.

•Presentation of documentation (report, plans and budget) for public tenders and competitions.

•Comprehensive water management (comprehensive projects).

Experience in:

·Potabilization.

· Membrane bioreactors.

·Compact treatment plants.

· Biological treatments with elimination of nutrients (nitrogen, phosphorus).

·Separation of biomass by forced flotation.

· Physicochemical treatments (coagulation, locculation, decantation).

·Degreasing.

·Ultrafiltration membranes.

·Reuse of water.

•Commissioning of the facilities and verification of its correct operation.

2) MANAGEMENT AND CONTROL OF PURIFICATION STATIONS

WASTEWATER AND DRINKING WATER.

3) EQUIPMENT INSTALLATION AND MAINTENANCE

• Suppliers of equipment for WWTPs (Water Purification Plants).

Waste) and (Drinking Water Treatment Plants).

• Training of personnel responsible for maintenance and operation.

• Post-sales advice and assistance.

Desalinations / Reverse osmosis

To carry out the calculation for a reverse osmosis installation, it will be essential to obtain a COMPLETE ANALYSIS of the water to be treated.

It will also be essential to determine the use that will be given to the water obtained.

It is not the same to use it, for example, for crop irrigation, as it is for human consumption, in which case it will require additional treatments, such as chlorination, UV sterilization or ozonation.

Reverse osmosis allows only pure water to pass through and the concentrated salts are

carried away by a continuous flow of water called CONCENTRATE OR REJECTION, and the pure water is called PERMEATE. It is therefore a continuous process of separation

or concentration and as such, it can be used depending on the liquid we are interested in recovering, whether the permeate or the concentrate.

In the case of water, the fluid we are interested in recovering is the permeate, eliminating 80-95% of salts and 99.99% of viruses and bacteria, thus achieving desalination and purification.

of brackish and marine waters.

APPLICATIONS

• Production of ultrapure water for high-pressure boilers pressure.

• Osmosis as pretreatment for ion exchange.

• Production of ultrapure water for circuits.

• Production of ultrapure water for painting electrophoretic.

• For cosmetics manufacturing.

• For manufacturing pharmaceutical products.

• Ice manufacturing.

• Brewing.

• Production of soft drinks.

• For irrigation.

• Make seawater drinkable.

• Make water for human consumption drinkable.

• Domestic installations.

• Hemodialysis.

• Etc.

Descaling

ION EXCHANGE SOFTENER

It is the process currently most used in both domestic and industrial use.

They are made up of synthetic resins, which have the property of exchanging calcium and magnesium ions for sodium ions. These cationic resins contain anionic groups in their composition.

and they have a spherical shape, with a size between 0.3 and 1.2 mm.

When said resin comes into contact with water, which contains calcium and magnesium cations, these are retained by it, giving up the sodium cations to the water.

Regeneration

THE CYCLES OF A REGENERATION

•Service, is when the hard water passes through the container that contains the resins, retaining the calcium and magnesium. Generally, water is introduced through the upper part of the resin; at the beginning of the cycle, the entire resin is covered with sodium ions, while at the end of the cycle, the resin is saturated with calcium and magnesium ions.

•Backwash, is a wash with water in the opposite direction to purification, and its purpose is to fluff up the resins and eliminate remains of suspended matter that could

carry the water and remain in the resin as a filter.

•Brine aspiration, a highly pure sodium chloride solution at a concentration of 20% is used as a regenerant, which is slowly passed through the resin and discharged into the drain along with the calcium and magnesium.

This brine is prepared in a container, which contains common salt.

•Slow washing, it is a washing with a low flow in the same direction of the regenerant contribution, in order to ensure that the brine passes through all the resin at a speed

constant. In this phase the replacement of calcium and magnesium with sodium is completed.

• Quick washing, its purpose is to remove excess salt used in regeneration from the resin, and is carried out by adding a high flow of water in the same direction as purification, but evacuating it to the drain. When the washing water no longer contains salt, the regeneration can be terminated and the service cycle begins again.

For the correct calculation of the appropriate equipment in each installation,

it is required to know:

• Peak flow, it is necessary to know what the peak flow of the installation is so that the equipment to be chosen is capable of providing it.

•Average consumption, it is necessary to calculate the size

of the necessary equipment.

•Hardness is one of the primary factors to calculate the equipment that will be necessary.

•Available space, once the equipment has been chosen, it will be necessary to verify that we have enough space for its location.

Drinking water treatment

WORK METHODOLOGY

1. PHYSICOCHEMICAL ANALYSIS:

• PH, conductivity, solids, turbidity.

• Anions and cations (Ca, Cl, Fe, Mn,...).

• Solvents, pesticides, hydrocarbons, heavy metals.

2. MICROBIOLOGICAL ANALYSIS:

• Escherichia Coli.

• Clostridium Perfringens, Enterococo

By applying the best technology we can offer quality solutions to the most common problems:

• Organic material.

• Suspended matter.

• Microbiological contamination.

• Presence of salts (high conductivity).

• Nitrates, Iron and Manganese.

• Toughness.

Filtration

POSSIBLE TECHNOLOGIES

1. FILTERS:

• Flint: dual, dynamic.

• Resins, zeolites, active carbon.

• Cartridge (microfiltration).

2.MEMBRANES:

• Ultrafiltration.

• Inverse osmosis.

In addition, it may be necessary to use water conditioning products, which will depend on other factors such as:

• Nature of water turbidity.

• Amount of matter in suspension.

• Flow variability.

• Presence of organic substances.

• Presence of iron.

The standardization of equipment has allowed a low

cost and proven quality of materials

employees:

• Construction of GRP filters.

• Continuous washing sand filters.

• Metallic filters.

• Cartridge filters.

• Filter bags.

• Washable mesh.

• Filter beds.

OPTIONS

CONFIGURATION OPTIONS

The flow of water to be treated and the application determine

the diameter of the filter. For example, closed filters

of flint act at a speed of 10-15 m3/m2h,

while the coal ones do so at a speed

the 25 m3/m2h.

Options depending on configuration:

• Individual filters.

• Dual filters (allow continuous flow: one filters while the other is washing).

Options depending on filter material:

• Stainless steel.

• Iron.

• PRFV.

CLEANING AND FILLING OPTIONS

Options depending on cleaning:

• Manual cleaning.

• Automatic cleaning by time (filters volumetric).

• Automatic cleaning by pressure switches. Further automatic devices designed to treat high flow rates.

Filling variability depending on use:

• Sílex (0,5-1 mm, 1,5 mm y 2,5 mm).

• Anthracite.

• Pyrolysed.

• Activated carbon removal of chlorine, organic matter, heavy metals, etc.

• Special activated carbon removal of organic pesticides.

• Resins.