Ventajas de los biodiscos incluyen: • Períodos cortos de contacto son necesarios debido a la superficie activa grande. • Los biodiscos son. Suministro de desarenadores-desengrasadores para depuración de aguas residuales. Presentación Tratamiento de Aguas Residuales Wiki 9. que llevan las aguas. También se utilizan filtros percoladores, biodiscos, lagunaje.

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Greenpeace considers that the lack of purification of the water, discharges and overexploitation of demand are the main cause of the poor quality of the water in Spain. It must be that wastewater is transported and treated properly.

Requires a specific infrastructure made up of sewers and collectors, and so-called facilities stations of purification of waste waters WWTPto improve the conditions of the wastewater so that they can be discharged to the natural channels of water.

These stations through physical, chemical and biological processes can eliminate polluting substances present in this type of water, obtaining an effluent which in some cases can be re-used and other simply discharge into rivers and seas without causing significant damagecontributing to maintain the ecological flow in many rivers of the drier basins of Spain. The effectiveness of the treatment process, as it is developed in Figure 1, is expressed in terms of percentage of suspended solids and BOD reduction among other parameters.

The BOD is a measure of the amount of dissolved oxygen consumed by micro-organisms for the oxidation of organic matter. The higher is the level of organic oxidables materials, higher is the BOD and worse is the quality of the water. First of all the residual water is subjected to a pretreatment that is to eliminate the solids of larger bars or filters that removed the elements of large size. In this process, as well as start the cleaning of the water, prevents the obstruction of pumps and machines present in the station.

This is essential as these waters are loaded with all kinds of waste, rags, sticks, leaves and sometimes even appear surprising objects. A cursory look at these waters would make us reflect on the bad habits that we throw certain types of waste through the toilet or the different present in our home drains. Bars and sieves are also used to separate these large solids.

Elimination of oils and fats in the form of floating foam. Then the water undergoes a primary treatment. It means treatment primary to that process or set of processes whose mission the separation by physical means of particles in suspension were not removed in the pretreatment. In conventional plants the primary treatment is performed by decantation, i. It is also possible to remove solids by flotation, solid density similar to the water injection of very fine bubbles that make these solids float on surface are removed in this case.

The effluent from primary treatment is aimed at secondary treatment. There are many types of treatment side activated sludge, prolonged aeration, bacterial beds, biodiscos However, they can be grouped in treatments of suspended biomass and biomass fixed treatments. In the first, the biomass is suspended in the aquatic environment in contact with organic contamination by agitation activated sludge, prolonged aerationwhile that in the latter the biomass is set on a material.


This support is put in contact with water and organic pollution bacterial beds, biodiscos. One of the more widespread and effective of the above systems are the activated sludge. These consist of developing a culture of microorganisms that together with the organic form the basic unit of these systems: Cleansing in this step is based on the oxidation of organic matter by the microorganisms present in the tanks, this oxidation is increased by oxygen via turbines or diffusers in the interior of the rafts.

The agitation prevents sediment and homogenised mixture of the Floc and residual water after a time of sufficient contact, hours, the mixed liquor is sent to a clarifier or secondary decanter, designed to separate the pure water of the sludge Figure 5. Secondary decanter, there is the separation of sludge.

The overflow allows the removal of the purified water. The study in depth of the flocculus and of the present microorganisms in the system helps us to know the state of operation of the plant. These organisms designate bioindicadores since they are used to to appear under some concrete conditions as it can be deficiency of oxygen, of nutrients, excess of loads, etc.

We can see some of these organisms in the Figure 6. Although, as we have seen, these agencies can help us detect certain problems in time, sometimes these same people due to overgrowth are the cause of certain problems.

Some of these situations are the filamentous bulking, the viscous bulking, foam, etc.

These phenomena can be common in the sewage treatment plants and cause problems of sedimentation of sludge in dumping sometimes of poor quality water to natural water channels. There are several methods of control of this phenomenon, although the most important tool for the technical gauas, is to detect the problem beforehand by means of microscopic studies.

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This treatment is not present in all the treatment plants, but will be compulsory implementation starting inin those areas at risk of eutrophication, as the discharge of water filled with nitrogen and phosphorus into rivers is producing a process of eutrophicationthat is to say, an abnormal growth of algae, aquatic plants and microorganisms from different classes in some sensitive areas of our rivers. This exerts a strong demand for oxygen, which negatively affects the life of fish and has a negative impact on the use of that water.

Finally the output water can have different uses, this water called reclaimed water and is one of the great benefits of cleansing because it returns significant volumes of water to the hydrological cycle.

In Spain there is little implementation of this type of use, we are in 12th place, in front of United States, Japan or Australia Escobar, The reuse of water on a large scale is via irrigation in agriculture and is common in arid and semi-arid regions such as the Spanish Southeast.

In addition to the water line, in these stations of treatment exists a line of sludge Figure 1 as this both in the primary decantation process like in high school we get sludge by sedimentation which remain at the same time a treatment to eliminate its fermentation capacity and dehydrate them reducing and volume.


The sludge produced in the sewage treatment plants have alternative uses such as its agricultural use for fertilizer, or more current proposals such as the manufacture of refractory bricks or ecobrick. We must be aware that each of us are part of this process, as that present in the sewage waste characteristics influence the time, cost economic and quality of cleansing, is reach to change certain habits and learn to properly dispose of the waste to facilitate this process.

For example the oils and fats that are pulled in anywhere without taking into account the precautions for handling are two of the main pollutants that impair our environment because that one litre of agua oil can contaminate one million litres of water.

And the correct separation of the waste, but also a responsible use of water, not only is important as with everyday agjas give us a bathroom, pull the string or leave open the tap while we we aseamos we are condemning hundreds of litres of water, in the majority of people drinking, to become waste water which is a significant economic and energy loss.

Hidritec – desarenadores – desengrasadores

Control pH, Recox, etc. This news article was originally written in Spanish. It has been automatically translated for your convenience.

Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor rexiduales it intended to replace a human translator. Water is an indispensable resource in our daily lives and in each of the ecosystems that form our environment. For this reason we must preserve it making sustainable use and preventing pollution, because it is not only important the abundance of this resource, but also its quality.

The treatment of the wastewater occurring both at the domestic level such as those from industrial processes is vital to do so. This type of water pose an environmental problem, as if they were discharged directly to the natural channels of water would be an ecological risk, due to the high burden of pollution.

The load would alter the balance of the ecosystems that were discharged these waters, damaging both the fauna and the flora present in our rivers and seas. Scheme of a conventional WWTP source: Resdiuales this step the water undergoes several processes such as: Aspect of the basic unit bioviscos purification, the flocculus.

Different genera of protozoa, present in sludge with good qualities of debugging. We can summarize, the purification of waste waters is a series of objectives which include: To minimize the natural channels of water pollution, thus protecting the environment.


Take advantage of the obtained waste, making more sustainable use of water resources. Informative diptych on wastewater treatment. The reuse of water purified in Spain. Current situation, legislative framework and exemplary cases. Environmental aspects of the reuse of reclaimed water.

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