A recycling system should be capable of processing at least one and a half times the maximum capacity of the rig's mud pump. This is usually determined by the size and number of hydrocylones the unit has. Some units come with additional features, such as spoils pumps and pressure washers. The system should require minimal effort for mobilization and demobilization. Along with being a piece of mud processing equipment, the system is also a work station and should have the required safety features such as adequate handrails and work area free of trip hazards.
Workers are constantly climbing up and down the unit, so good stairways are a necessity.
The proper pH adjustment of the water is even more critical because large amounts of unyielded bentonite will be discarded. Mud aeration problems can occur, resulting in air locked pumps and lots of down time. Also, don't go overboard with mud viscosities and gel strength.