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An Innovation launches ...

HESA

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HESA was created with the aim of providing, building and developing ​technical, simple and innovative solutions in the hydraulic and water ​transfer fields, in various applications.



In the field of wastewater lifting, HESA has developed and perfected a ​Solid Material Separation and Expulsion Device, marked DSEMS®, the ​technology, operation and innovation of which have been the subject ​of a patent filing.


The DSEMS® system makes it possible, in the application of lifting ​stations, to overcome the problems of wipes by transferring them ​directly to the WWTP via the wastewater network but without going ​through the tank of the lifting station.


Solid materials and waste can therefore no longer clog the pumps.

The screen basket is removed as well as its handling by the agent.


This eliminates, among other things, unsanitary stains from town hall ​agents and employees for cleaning, handling and unclogging the ​screen basket or pumps.


Saves time, saves money and eliminates painful tasks.


Water Drops

Sc​reen Basket

The screen basket is ​the protection device ​for the pumps in a ​lifting station. When it ​overflows, the ​materials are no longer ​retained.

It must therefore be ​taken out regularly and ​cleaned by hand.

During this handling ​time,

there is no longer any ​protection for the ​pumps.



The DSEMS® system in a lifting station:

  • Improves the working conditions of agents
  • Extends the lifespan of lifting pumps
  • Maintain a clean and ventilated area


  • Eliminates painful operations for a​g​ents


Human contact

Contact with dirty, ​unsanitary and ​bacterial waste as well ​as splashes of effluent ​on the face are a ​dangerous and ​infectious working ​environment for agents.

The work environment ​is unpleasant.

Handling

Handling is mainly done ​to clean the screen ​basket and clogged ​pumps.

This is a significant and ​curative cost with no ​gain whatsoever.

With all the hazards ​involved in manual or ​hoist handling.



Cl​ogged Pumps

The wipes clog the ​pumps, blocking them ​and putting them out of ​service. The risk of ​overflowing the station ​then becomes ​significant.

It is therefore ​necessary to take out ​the pumps.

This operation is ​curative and physical.

During this time the ​position is no longer in ​an optimal situation.


Hydrocleaning

When the basket is ​overflowing with ​materials, and the ​station is saturated ​with materials and ​grease, there is no ​other solution than to ​clean it with a sewer ​jetter truck.

This also represents a ​significant operating ​cost.

Wastewater lifting station with DSEMS®



General supply of the Step beds planted with reeds (Aveyron)



    • Inner diameter of the station: 1.4 m
    • Station Height: 4.30 m
    • Inlet Water line pipe: - 3.05 m
    • DSEMS® size: 1.25 m
    • Flow rate by pump: 22 m3/h


    • DSEMS® system: 100 % Inox
    • Lifting Station: Polyester tank with flat bottom PAV-SIMON
    • Regulation: Piezométric Probe


Appearance of the station upon ​commissioning

Arrival of effluent

Appearance after 11 months

and 11,000 m3 of effluent passed

Appearance after 11 months

and water jet cleaning

After more than 9 months total absence of solid materials:








100 % of solid materials, waste and wipes expelled to the WWTP



  • In the bottom of the lifting station
  • On the surface of the water miror
  • around cables and probes
  • around stainless steel parts


Overview of materials expelled by DSEMS®

(wipes of all kinds, grease blocks, potato fillets, fibers and textiles, etc.)


DSEMS® - “Patent application filed”

DSEMS® overload test on test ben​ch

Sending 3 kg of various non-destructible materials in 2 minutes 30 seconds

in a volume of 250 liters of water (15 cm) ... then expulsion


(Clothes, textile materials, wipes of all types, etc.)

Materials sent

at the collector inlet

Recovered materials

at the both DSEMS exit

Complete cycle

Arrival of materials - Separation and Expulsion DSEMS1 and DSEMS 2


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Separation:


from 0 to 2min17 s

from 2min33s to 2min44s

Expulsion:


from 2 min18 s

to 2 min45s

DSEMS 1 – Expulsion

(Detailed view)

DSEMS 2 – Expulsion

(Detailed view)

Each time pump starts:


inlet collector is cleaned

DSEMS® separator is cleaned

storage area is cleaned

cartridge is cleaned against the current

opposite pump inlet is cleaned


DSEMS® system is self-cleaning

upon commissioning

DSEMS® - “Patent application filed”

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DSEMS® system improves general condition

from your lifting station

Absence of

solid materials

in the tank

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Curative hydrocleaning ​removed

Water jet cleaning


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Lifting station ​remains clean and ​ventilated

Lifetime extended pumps

No clogged pumps


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No handling

c​logged pumps

No contact

agents with waste

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100% of the time

the pumps are protected

DSEMS® - “Patent application filed”

Do not hesitate to contact us for more information

HESA +337 56 95 72 74

DSEMS® - “Patent application filed”