Recently, GN Solids Control finished a complete decentering centrifuge mud treatment and recycling system for an America project. The mud treatment system is used for an underground construction project, to remove the sands and recovery the drilling mud for HDD rigs and micro tunneling machines.

For fast movement and flexible jobsite layout, GN Solids Control design the centrifuge dewatering system with different operation modular. Clients can choose whatever parts they need per material conditions.

Modular 1: Hopper connection unit. Frankly speaking, it is a big V bottom tank with a hopper on top to collect waste mud. And there is a screw conveyer under the V bottom tank to transfer the water mud to the treating systems.

Modular 2: Coarse shale shaker separation unit. It is the first stage separation unit. It is a big volume shale shaker with coarse shaker to separator the big rocks and big size solids inside the mud. The recovered mud with fine solids will goes to the next processing equipment.

Modular 3: Solids Control shale shaker separation unit. It is the second stage solids control separation processing unit. The mud from the first stage coarse shale shaker will be pumped to the second solids control shale shaker to remove the big size solids. The clean mud underflow shale shaker screen will falls downs to the solids control shaker tank, and be pumped to the second processing unit.

Modular 4: High speed decanter centrifuge unit. It is the third stage separation unit. The clean mud recovered from solids control shale shaker will fall down to the shaker tank. There will be a screw pump feeding for the high speed centrifuge. The high speed centrifuge feeding pump will suck mud from the solids control shaker tank, and feed to the centrifuge. The high speed centrifuge is used to remove the fine solids inside the mud.

Modular 5: Chemical dosing dewatering unit. Decanter centrifuge can only remove the fine solids above 2 microns to 5 microns. If there is a high content of ultra-fine sand inside the centrifuge mud, chemical dosing dewatering unit is needed. It is used to dosing flocculant to the clean mud feed to high speed centrifuge, and increase the solids remove efficiency.

It is the second construction mud dewatering system for the American client. If you want more information, please feel free to contact GN Solids Control, or GN Solids America.