Muffin Monster™ inline/open channel grinders

Features and benefits

Dual-shafted grinder

Dual-shafted, slow-speed, high-torque grinder easily shreds the toughest debris, including rocks, wood, wipes, hair, clothing, plastic and other debris
Capable of grinding a wider variety of solids than single-shafted machines, macerators, or chopper pumps
Grinding separates organic from inorganic materials in the waste stream

Automated monitoring and controls

Protect pumps and other critical equipment from costly clogs and damage from tough solids
Auto load sensing and reversals reduce interrupts and optimize performance

Wipes Ready™ technology

Wipes Ready Technology available which prevents materials from forming long strips and reweaving in the waste stream

Compact and efficient design

Adapts to pipelines or channels with little or no modification
Custom stainless-steel frames allow easy installation in channels, wet wells and pump stations
Inline 30K Muffin Monster™ offers easy removable cartridge maintenance that allows for overhaul without removing the unit from the pipeline

Lower operating cost

Clear pipes and pumps means shorter pump run cycles and lower electrical costs

Main applications

The Muffin Monster™ sewage grinders are designed to protect pumps and other equipment by grinding down the toughest wastewater solids. Available in three different models each with two different configurations, they are suitable for applications such as:

Sewage pump stations
Headworks – primary treatment
Sludge processing
Anaerobic digestion / Bioresource
Septage / Grease receiving
Correctional facilities
Airports
Facilities management

Muffin Monster™ 10K series

The 10K Series Muffin Monster is a compact grinder, tough on solids in sludge and sewage applications. It fits into areas with limited space requirements while still providing the necessary power for downstream protection. The 10K Series is an ideal, low-cost solution that goes beyond sludge grinding at resource recovery facilities. It fits perfectly into office buildings, apartment complexes, resorts, retails centers and package treatment plants.

Hex shafts: 50 mm
Motor: Standard 1.5 kW; 25:1 reducer
Cutter size: 120 mm diameter
Seal max working pressure: 6 bar

Inline model

Inline model	Flow rate (1) m³/hr	Pipeline size mm	Pressure drop bar
10000-B100-DI	62	100	0.03
10000-B150-DI	125	150	0.09

(1) 0-2% solids

Open channel model

Open channel model	Flow rate (2) m³/hr	Head drop mm
10002-0008-DI	41.4	146

(2) Flow based on optimum channel conditions.

Muffin Monster™ 30K series

Troublesome solids are now easier than ever to reduce with the Muffin Monster dual-shafted grinder. Its slow speed, high-torque design shreds tough solids that typically cause sewer problems. The 30K Muffin Monster is available as both inline and open channel configurations.

Hex shafts: 50 mm
Motor: Standard 2.2 kW; 25:1 reducer
Cutter size: 120 mm diameter
Seal max working pressure: 10.3 bar

Inline model

Inline model	Flow rate m³/hr	Pipeline size mm	Pressure drop bar
30004T-B100	102	100	0.04
30004T-B150	159	150	0.08
30004T-B200	250	200	0.21
30004T-B250	386	250	0.20
30004T-B300	556	300	0.40

Open channel model

Open channel model	Flow rate (1) m³/h	Head drop mm
30005-0012	141	290
30005-0018	223	405
30005-0024	311	405
30005-0032	477	445
30005-0040	686	495
30005-0060	1277	760

(1) Flow based on optimum channel conditions.

Muffin Monster™ 40K series

The 40K Series Muffin Monster excels in wet and dry grinding applications. It is a powerful shredder for large processing systems. It also serves in many industrial applications including fish and beef processing, petroleum, pulp and paper mills, chemical plants, and recycling plants.

Hex shafts: 64 mm
Motor: Standard 7.5 kW; 35:1 reducer
Cutter size: 190 mm diameter
Seal max working pressure: 10.3 bar

Inline model

Inline model	Flow rate m³/hr	Pipeline size mm	Pressure drop bar
40002-18B300	612	300	0.24
40002-24B400	999	400	0.15
40002-24B450	1249	450	0.23
40002-32B500	1558	500	0.29

Open channel model

Open channel model	Flow rate (1) m³/hr	Head drop bar
40002-0018	207	203
40002-0024	327	406
40002-0032	477	457

(1) Flow based on optimum channel conditions.

Options

Cutters

7,11,13 and 17* tooth options

* Wipes Ready™ serrated cutters

Motors

IP55 TEFC Motor, standard
IP55 TEFC Motor for ATEX: (Ex d IIC T4), optional
IP68 Immersible Motor ATEX: (Ex de IIB T4), optional
IP55 Integrated drive, 10K only

Smart controller

Load-sensing control system automatically reverses to clear jams

Custom frames

Stainless steel frames for easy installation

Wipes Ready™ feature availability

	10K in-line Muffin Monster	10K open channel Muffin Monster	30004T in-line Muffin Monster	30005 open channel Muffin Monster
17 tooth Wipes Ready cutters*	Optional	Optional	Optional	Optional
Delta P side rails*				Yes
Optimized cut control*	Yes	Yes	Yes	Yes
* Patent pending

Wipes Ready™ Technology

Muffin Monster sewage grinders are available with the unique Wipes Ready™ suite of technologies. It is designed to capture all wipes in the waste stream and shred them into small pieces that will not reweave into a ragball in sewage systems.

The Wipes Ready technologies applied in Muffin Monster sewage grinders are:

Wipes Ready cutters* – A combination of serrated cutters and knurled spacers cuts wipes in two directions. The result is smaller particles that cannot reweave downstream.
Delta P side rails* – Direct solids into the cutters without sacrificing flow rate and prevent debris build-up in the grinder
Optimized cut control (OCC)* – The OCC gear ratio optimizes shaft speeds to enhance the cutting action and cleaning of the cutters, which in turn improves the performance and life of the grinder.

Please note that different Muffin Monster models feature different Wipes Ready options.

* Patent pending

Case studies and articles

Monster makes quick work of debris
Municipal utility company Servicebetrieb ASK in Nordrhein-Westfalen was experiencing frequent blockages and outages in one of its sewage pumping systems. The main cause was the proportion of solids in the wastewater. Sulzer recommended the upstream installation of a dual-shafted grinder, known as the Muffin Monster™ and since its installation, the sewage pumps have been operating perfectly.
Warding off hygiene challenges
Blocked wastewater systems are a perennial challenge for hospitals around the world. To keep these critical systems running, leading healthcare facilities are turning to Sulzer Muffin Monster™ grinders as an effective first line of defense.
30K Muffin Monster™ in lift station
Villa Mountain Vista North in Las Vegas installed a 30K Muffin Monster™ to get rid of clogging in their onsite lift station.
30K Muffin Monster™ for biogas facility
Learn how the powerful 30K Muffin Monster™ greatly reduces material clogging and downtime at a biogas facility in Catalonia, Spain.
40K Muffin Monster™ in septage hauler
Port-a-Loo, New Zealand’s largest septage hauler, invested in a 40K Muffin Monster™ to eliminate frequent clogging of wastewater pumps at the disposal site.
10K Muffin Monster™ for water reclamation plant
Learn how the 10K Muffin Monsters™ help Schertz water reclamation plant in Texas, USA, grind the toughest solids more reliably with less energy.
Muffin Monster prevents sewage pumps from clogging
January 16, 2020

Sewage system operators deal with problematic waste such as wet wipes, disposable wipes and other solids flushed down toilets. They spend a lot of resources cleaning their pumps of unwanted solids in the sewage. Our Muffin Monster range, very powerful grinders, break these solids down and prevent pumps from clogging.
Case studies
Wherever fluids are pumped, mixed, controlled or applied, we are there. See how our solutions create value for customers and learn how we can make your pumping and mixing processes more efficient and profitable, safeguarding your production and ensuring lasting reliability.

Videos

Manage your facility with a Monster grinder

Muffin Monster grinders - an extra insurance against clogging in your pump

Documents

Anaerobic digestion
Anaerobic digestion requires temperature equalization and proper homogenization of the biomass to achieve a high gas production and to avoid sedimentation of organic matters. The surface crusts must be broken and prevention of foam must be managed if there are foaming tendencies. Sulzer can provide efficient and reliable Scaba agitators for digesters with high-efficiency propellers. Muffin Monster™ grinders upstream from the anaerobic digesters condition the sludge before digestion, improving the homogenization of the biomass and protecting the equipment downstream.
Commercial waste disposal from toilets
Commercial wastewater from toilets comprises all sewage water flushed from toilets on commercial, industrial or public properties.
Commercial wastewater without toilet waste
Commercial wastewater without toilet waste includes drainage and grey wastewater.
Network pumping station
Network pumping stations collect municipal wastewater from residential homes and communal schemes. Installed in dry or wet wells, the pumps deliver the effluent to a terminal pumping station. Since most pumping stations are not equipped with screens, the pumps must cope with difficult materials such as fibrous sanitary and packaging items.
Sludge buffer tank
The sludge buffer tank can be used for a variety of purposes. The most common application is the blending and homogenization of highly concentrated primary, secondary or digested sludge. The solution used to mix the sludge itself, or to mix the sludge with the dosed thickening chemicals, depends on the design and volume of the sludge buffer tank. Submersible mixer types ABS XRW and RW, as well as the agitator type Scaba, can be used to provide highly efficient mixing. Positive displacement, progressing cavity transfer pumps and Muffin Monster™ grinders are used for solids reduction and sludge transfer from sludge feed to sludge dewatering process.
Sludge handling and transfer
Sulzer pumps, mixers, grinders and agitators are used to condition, transfer, blend and handle sludge. Our progressing cavity, positive displacement pump range, provide a near constant flow rate with suction lift capability, for handling all types of non-Newtonian sludge and cake processes, typically demanded within the wastewater treatment plant. Maintain in place features ensure any process downtime due to the change out of wear components is kept to a minimum. The Muffin Monster™ grinders protect the equipment downstream. The sludge conditioned by grinders will not clog valves, heat exchangers, digesters, centrifuges and other equipment on the sludge line.
Terminal pumping station
Terminal pumping stations receive municipal wastewater from network pumping stations. Installed in dry or wet wells, the pumps forward the medium to a treatment plant for final purification. Due to the lack of screens at most pumping stations, difficult materials such as fibrous sanitary and packaging items are a constant threat to uptime.