Orange KROLL WRS 1 on a Mercedes chassis in front of the KROLL plant in Hünxe

Sewer cleaning

Combination vehicle with water recycling WRS 1

Combined suction and jetting vehicle with continuous water treatment — the dirty water is cleaned in 8 stages and fed back into the jetting process. Uninterrupted operation without additional water refills.

20.000 l
Air volume up to: 4.000 m³/h
Suction capacity up to: 600 l/min · 400 bar
High pressure up to: 8 stages
Water treatment

Steel or stainless steel · Multi-compartment system optional

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Continuous water treatment

Working without interruption — the water stays in the circuit

Process water is treated automatically via settling, coarse and pre-filters, a dirty water pump, cyclones, a cascade and a settling tank. This eliminates trips to refill with fresh water — its large capacity and ability to take up even heavy sludge make the WRS 1 particularly cost-effective. Despite the extensive technology, operation remains simple: standardised components ensure high process reliability.

8Treatment stages for continuous recycling operation

Cutaway drawing of the WRS 1 showing sludge compartment, water compartment, treatment unit and high-pressure reel

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Technical equipment

Configuration & components

Every WRS 1 is configured from the KROLL modular system to suit its application. The overview shows what is possible:

Features

Discharge by gravity
Discharge by pressurisation via the vacuum pump
Discharge by pneumatic ejection piston
Multi-compartment system (optional)
Combined operation: suction and high-pressure jetting
Variable water compartment

Tank

Sludge compartment size to customer specification
Up to 20,000 litres air volume
Sludge compartment shape: cylindrical
Material: steel or stainless steel
Fully opening rear door
Water compartment at the front of the tank, in the piston antechamber or as lateral water pockets
Level indication via sight glass tube or float gauge with scale

Rear door

Opens across the full cross-section
Dished-end design
Material: steel or stainless steel
Opens upwards hydraulically
Central locking: pneumatic, hydraulic or manual

Vacuum pump

Make of your choice (e.g. CVS, Gardner-Denver-Wittig, SIHI, Jurop, Samson)
Quantity: 1 or 2
Suction capacity up to 4,000 m³/h
Mechanical or hydraulic drive from the chassis power take-off or via a separate engine

Vacuum system

Suction hose cassette
Suction hose reel
Telescopic boom
Suction hose cassette with telescopic boom
Suction hose cassette with slewing ring boom
Simultaneous boom

High-pressure pump

Make of your choice (e.g. URACA, Hammelmann, Speck, Woma, KAMAT, Pratissoli)
Quantity: 1 or 2
Jetting capacity up to 600 l/min at up to 400 bar
Pneumatic pressure control valve
Pressure-speed control
Drive from the chassis power take-off or via a separate engine

High-pressure system

Large high-pressure hose reel, infinitely variable hydraulic drive in both directions
Fixed or slewing, mounted on the rear door or on the boom, some versions telescopic
For HP hose DN 19, 25, 32 or 38 up to 360 m, custom versions up to 500 m
Small high-pressure hose reel, hydraulic or manual, for 40–120 m HP hose DN 13

Water treatment

Continuous and automatic process water treatment
Enables uninterrupted suction and jetting on site
No trips to refill with fresh water
8 stages: settling, coarse filter, pre-filter, dirty water pump, cyclones, cascade, settling tank

Controls

LOGO! control
CAN bus control
Pressure-speed control
Radio remote control
Central control station in stainless steel housing

Equipment

Discharge apron in aluminium or stainless steel
Toolboxes or hose trays on the left and right of the body, in aluminium or stainless steel
Additional toolboxes
High-pressure and sewer jetting hoses
Low water warning system
Residual water drain
Bench vice
Spray gun and washing lance
Halogen work lights

Optional equipment & accessories