Short Project Description

Entsorgungswirtschaft Soest GmbH col­lects and recy­cles approx. 30,000 t/a of biowaste at the Anröchte com­post­ing plant site. The exist­ing com­post­ing plant was expand­ed to include fer­men­ta­tion in 2020. The ten­der was won by Hitachi Zosen INO­VA AG for the fer­men­ta­tion part. Fin­ster­walder Umwelt­tech­nik, in turn, was con­tract­ed to sup­ply and install the pump­ing tech­nol­o­gy for cir­cu­la­tion and trans­fer of the fer­men­ta­tion prod­uct from the digester to the com­post­ing plant. The pump capac­i­ty is adjustable between 12 and 22m³/h at 10bar deliv­ery pressure.

Inte­grat­ed FIN­STER­WALDER Technology

• Gate Valve Pump KS23 – DN250
• 1x Hydraulic pow­er Unit 2x 15kW
• Cotrol syste

Ser­vices

• Deliv­ery
• Design
• Instal­la­tion
• Com­mis­sion­ing
• Ser­vice

Waste Treat­ment Process

Flow Sheet in Detail

FIN­STER­WALDER GATE VALVE PUMP KS23 DN250
The two KS23 gate valve pumps are alter­nate­ly filled from a DN400 pipe via a Y-piece. One pump push­es
the fer­men­ta­tion prod­uct back into the fer­menter via a DN250 pipe. Both pumps are oper­at­ed simul­ta­ne­ous­ly
to con­tin­u­ous­ly trans­fer the diges­tate into the com­post mix­er of the com­post­ing facility.

HYDRAULIC POW­ER UNIT
The hydraulic pow­er unit, which was spe­cial­ly devel­oped for this project, dri­ves both pumps and can also
oper­ate oth­er valves on the sys­tem. It has a 600L oil tank, a WHG oil pan and con­sists of three oil circuits.

SWITCH CAB­I­NET AND COTROL SYS­TEM
The switch cab­i­net and the automa­tion were adapt­ed for the project. The aim was to ensure 24-hour auto­mat­ic
oper­a­tion and remote access. In addi­tion, the diges­tate should be sent into the com­post mix­er as con­tin­u­ous­ly as
pos­si­ble. For this pur­pose, fre­quen­cy con­vert­ers were installed that allow both pumps to deliv­er in a coor­di­nat­ed
man­ner.