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
Bombas y sistemas de dosificación para otras industrias
LEWA ofrece soluciones e informes a medida para casi todas las industrias en cuyos procesos se necesita la dosificación exacta o el bombeo fiable de fluidos. Como especialistas en el manejo de fluidos, tenemos también experiencia en áreas fuera de nuestros mercados clave.
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Bomba dosificadora de membrana LEWA ecosmart®
LEWA ecosmart es una innovadora bomba dosificadora de membrana compacta y con multiplexación con un precio reducido. Con la misma, sin duda garantizamos nuestra reconocida calidad LEWA y le ofrecemos nuestra experiencia derivada de 60 años en el mercado.
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Bomba dosificadora de mecánica membrana LEWA ecodos®
LEWA ecodos es una bomba dosificadora totalmente fiable, económica y muy adaptable, sobre todo cuando no se desea un accionamiento por membrana. En este caso, también confiamos en nuestro sistema modular de eficacia probada al diseñar la bomba perfecta para usted.
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