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JWC Environmental is a global leader in solids reduction and separation systems for customers in several industries, including wastewater treatment, petroleum, food processing, agriculture, marine, recycling, product destruction and more. In 1973, JWCE invented the Muffin Monster, the world's first dual-shafted wastewater grinder. Today, JWCE has shipped over 35,000 waste shredders and screens worldwide and our family of 150 employees is committed to providing customers with cutting edge technologies, services and value.

Muffin Monster Grinders

The patented Muffin Monster® design has established new standards in product performance and reliability due to decades of technical advancements and innovative design improvements. These rugged sewage grinding machines shred most any material capable of disrupting your system.

With over 35,000 installations, the proven capabilities of the Muffin Monster is legendary in providing solutions for the ever more stringent operational needs arising throughout the industry.

The Muffin Monster sewage grinder has proven itself over the last four decades in the most demanding wastewater solids reduction applications including: pump station protection; sludge, grease or scum lines; septage receiving stations; prison and jail sewer lines and more.

Features and Benefits

Dual Shafted Sewage and Sludge Grinder

  • Low-speed, high torque grinder handles rags, rocks, wood, clothing, plastics and other debris
  • More powerful and capable of grinding a wider variety of solids than single shafted machines and macerators
  • Energy efficient 3HP (2.2 kW) motor or optional 5HP (3.7 kW)
  • Multiple cutter options to fit each application

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
  • In-line Mini and Muffin Monster incorporate easy to remove cutter cartridge

Cartridge Seal Assembly

  • High pressure capability up to 90 PSI (6 bar)
  • Runs submerged or dry with no seal flush required

High-Flow Side Rails (patented)

  • Increases flow capacity and decreases head loss
  • Deflects solids into the cutting chamber

Automated Monitoring and Controls

  • Automatic load sensing and reversal reduces interrupts and optimizes performance

Ease and Flexibility of Installation

  • Adapts to most existing in-line or channel applications with little or no modification to piping or channel

Product Images

Muffin Monster - In-Pipeline & In-Channel
Mini Monster - In-Pipeline & In-Channel
Macho Monster - In-Pipeline & In-Channel
Channel Monster

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