Solutions
LEWA supplies sturdy metering pumps that can easily be implemented in metering systems, either in new ones in the planning phase or as replacement for older pumps in existing systems. LEWA pumps are provided in a modular design that grants a high flexibility.
A wide range of material choices assures highest chemical resistance and a long lifetime of the wetted parts in every situation. The pumps are designed for long-term use and high availability, amongst others due to sandwich diaphragms which provide emergency running properties in case one of the diaphragm layers is worn. Additionally, the most important spare parts are always in stock.
Rake and grit trap
Mechanical pre-cleaning
LEWA offers solutions for:
- Suction of the settled sand(sand-water mixture) with specially coated centrifugal pumps and air-operated diaphragm pumps
Primary clarifier diaphragm pumps
Further reduction of the flow velocity,
approx. 1.5 h retention time
LEWA offers solutions for:
- Targeted addition of C-sources (e.g. isopropanol, glycerol) for phosphorus degradation with diaphragm metering pumps
LEWA ecosmart or LEWA ecodos - Tank truck unloading of C- sources with lined centrifugal pumps
Aeration tank
Nitrogen degradation
LEWA offers solutions for:
- Chemical precipitation with iron(III) chloride, metering of flocculation aids with diaphragm metering pumps LEWA ecosmart or LEWA ecodos
Fourth clarifier
For trace substances (e.g. drug residues) sand filter systems with activated carbon filter
LEWA offers solutions for:
- Backwashing of the filters with water, reuse of the filter sand with centrifugal pumps and compressed air diaphragm pumps
LEWA metering pumps convey additives in sewage plants:
Background
Sewage treatment plants are necessary to turn wastewater from households or municipalities into clean water that can be returned to the water cycle.
In such plants, there are several process steps for removing unwanted contaminants – physically, microbiologically and chemically. Depending on the composition of the various wastewater types that enter the plant, auxiliary fluids like isopropanol have to be added to keep the conditions for microbiological stability within certain limits. E.g., when the level of C-sources is too low.
Flocculants help to coagulate ingredients that microbes cannot neutralize. Those molecules may then be removed mechanically.
Industries
Pompe e impianti di misurazione per altri settori
LEWA progetta e costruisce soluzioni su specifica del cliente e rappresenta un punto di riferimento per la maggior parte dei settori che richiedono dosaggi precisi o il trasferimento affidabile di fluidi. In quanto specialisti nella manipolazione di fluidi, abbiamo ovviamente esperienza anche in settori al di fuori dei nostri mercati principali.
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Pompa dosatrice meccanica a membrana LEWA ecodos®
LEWA ecodos è una pompa dosatrice assolutamente affidabile, economica e altamente adattabile, specialmente dove non si desidera azionare la membrana. Qui, possiamo anche contare sul nostro sistema modulare comprovato e collaudato nel progettare la pompa perfetta per voi.
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Pompa dosatrice a membrana LEWA ecosmart®
LEWA ecosmart è una pompa dosatrice a membrana innovativa, compatta e multiplexing ad un prezzo conveniente. Con esso, ovviamente, garantiamo la nostra rinomata qualità LEWA e ti offriamo la nostra esperienza derivata da 60 anni nel mercato.
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