WWTP Castellar del Vallés

Netwater Technology, has supplied, collaborated and advised in the remodelling and design of the current civil works, in order to successfully carry out the change of technology for the extraction of sands:

• SandTech®Nw210 sand classifier, to treat Qmax 25m3/h, main construction material in AISI-304L.

The main objective of our customer was to install a sand extraction system, which works efficiently and is able to extract as much sand as possible. The necessary requirement to utilise and remodel part of the existing construction site of the old system had some difficulty.

At present they had the alternative sand extraction system of origin that was installed in the year of construction of the WWTP in 1995. Some defects in the design of the work and tank caused a poor performance of the installed technology, (it is a type of technology that performs an elliptical movement, with blades that dragged the sands, towards the discharge area) discharging them into a container, but this system was not very efficient and the extraction of sands was very limited, only 1 container of 5m3 every 5 or 6 months.

–Netwater Technology travelled to the site on several occasions to take measurements of the existing site and thus be able to use part of the existing site for the new technology proposed by NETWATER, which is much more efficient in its task..

Our client AQUAMBIENTE, in order to carry out a modification and remodelling of the existing work, which involved demolition and remodelling works, needed to present to the Regional Council a written document and detailed plans for validation of the new technology that we had proposed, from NETWATER we collaborated in generating the written document and dimensioned plan with the different levels of the work and water levels..

– Through the installation of our SandTech®Nw160 Sand Classifier equipment, the new sand classifier is capable of “sedimenting, retaining, extracting and discharging” (sand and other waste), the new system is capable of extracting sand and filling 1 container of 5m3 every month and a half approximately.

Netwater Technology, through this installation, has managed to meet the needs of our client, as you can see in the pictures you can see the large amount of sand that the equipment supplied is being able to extract and thus contribute to even better performance of the treatment plant and reduction of operating costs.

In order for you to see the scope of the project we provide you with some images.