SOLVIMAT solution preparation and dosing system for powdery and granular products, dosing stations with piston-diaphragm-dosing pumps FKM, floor mounted on skids for pre- and postchlorination.
In order to obtain drinking water in superior quality, surface water in the water treatment plant Sardasht is treated with calcium hypochlorite.
Microbially contaminated surface water has to be treated in a multi-stage procedure
In order to obtain drinking water from microbially contaminated surface water from rivers or lakes, the surface water has to be treated in a multi-stage process. First, the particles are removed by flocculation and filtration, after this the disinfection of the contaminated raw water takes place.
In Sardasht, the raw water is disinfected by the use of calcium hypochlorite. Delivered in bags, the calcium hypochlorite is prepared by the semi-automatic solution preparation and dosing system SOLVIMAT.
A great advantage of the SOLVIMAT is, that it reliably prepares suspensions or solutions from bulk products with various granulations, from fine powder to boulder/granular and in variable product qualities. The solution is loaded in batch operation and hereby enables the adherence to the required maturity times. In addition, the two chamber principle allows continuous solution discharge.
In Sardasht up to 3000 l/h of calcium hypochlorite solution are prepared.
The feeder was specially developed for this project. The bags with calcium hypochlorite are placed in hinged feeders, opened and emptied dust-free. This type of discharge, combined with suction and powder retention, minimizes the health hazards of operating personnel.
The uncomplicated communication with the system is carried out by means of a touch-panel mounted on the front of the switch cabinet. This enables the setting of all operating parameters and displays all relevant system conditions in graphic form.
The inflowing solution water quantity is permanently monitored and stored by a flow meter with counter and impulse encoder, so that in the event of a power failure, the system can be restarted without intervention by operating personnel.
Furthermore, the maintenance requirement of SOLVIMAT is minimal.
Dosing stations for pre- and postchlorination
During pre-chlorination, the basic load is disinfected based on experience. In the post-chlorination, the residual chlorine content is measured in already treated water and the amount still to be dosed is determined, so that the residual chlorine content then achieved ensures that the drinking water remains germ-free up to the water point.
During pre- as well as during post chlorination the proven and robust piston diaphragm dosing pumps FKM, floor mounted on skids, are used. Two dosing pumps per skid (one in duty, one stand-by) guarantee for continuous dosing of the solution for disinfection.
The use of SOLVIMAT preparation and dosing systems can help to supply high-quality drinking water in regions with low water ressources.