mixing

Applications of dewatering unit
1) Dewatering unit is an important part for waste water treatment.
2) Combined with high speed or super high speed decanter centrifuge, dewatering unit is widely used for water base mud drilling cuttings treatment.
3) Dewatering unit can be used in TBM (Tunnel Boring Machine) drilling mud system
4) Dewatering unit can be used in dredging slurry separation system in civil projects. In this case, it is used together with belt compressor.

Flocculants is the most important part to effect dewatering unit performance. In order to insure a better performance of dewatering unit, we should pay attention on below points:
(1) If the surface of the flocculants powder is dissolved too rapidly, there will be particle mutually attached, therefore it will cause the particle interior does not be dissolved completely; the usual operation is to use various types of dispersing and dissolving device.
(2) Per different conditions, the time used to dissolve the flocculants varies. The main factors may as below:
A. The types of flocculants be used;
B. The water quality used as dissolution;
C. The temperature of water
D. The mixing efficiency.
Normally, its takes around 1hour for flocculants powder to be fully dissolved. If the flocculants cannot be mixing completely, it will reduce the performance.

Dewatering unit Design in drilling waste management field
Dewatering unit is usually put into container. GN Solids Control company offers 20ft containerized dewatering unit and 40ft containerized dewatering unit.
Dewater centrifuge for dewatering unit can be put into the container, inside the container or even on the top of container.

When dewatering unit is used together with decanter centrifuge. It should pay attention to that: the chemicals should add on centrifuge feeding pump outlet pipe, and before enter into centrifuge. The mud cannot be mixed with chemicals and then transfer to centrifuge. Pls refer our former mail for dewatering unit pipeline.

image

1500HP land drilling rig usually match 2000bbls mud system. The mud system will have complete full 4 stages solids control equipment and with 5 steps separation process.

image

Equipment included in 1500 hp land drilling rig mud system:

1) First stage solids control – Shale shaker GNZS594E / GNZS703E linear motion, 3 each

2) The second & third stage solids control – Mud cleaner GNZJ594E-3S-16N / GNZJ703E-3S16N, 1 each

3) Vacuum degasser GNZCQ360 to remove gas from drilling mud before enters into mud cleaner desander / desilter cone.

image

4) The fourth stage solids control – Decanter centrifuge, 2 each

 One decanter centrifuge GNLW452S in middle speed for barite recovery.

 Another decanter centrifuge GNLW363 in high speed to separate the low gravity mud.

5) Jet mud mixing & shearing mixing system, with GN high efficiency centrifugal pump and shear pump for chemical shearing and mixing.

6) 7 each Mud tanks: shale shaker tank, decanter centrifuge tank, suction tank, mixing tank, shearing tank, storage tank 1 or 2 each

Above is the standard 2000bbls mud system for 1500 hp land drilling rigs. GN Solids Control can make customized mud system per user’s special requirements. If you need more information of other size land drilling rig mud system, you can visit GN website or send mail to vivi@gnsolidscontrol.com

GN 200GPM mud system is suitable to treat capacity between 100~200GPM. It can be used for water well drilling and CBM drilling rigs.

The 200GPM mud system for water well drilling and CBM drilling including below equipment, it is a 1-tank mud system:

1) Mud tank: 4000*2100*1350mm, 1 each

2) Mud cleaner :GNZJ753E-4N, 1 each

The mud cleaner mounted with double deck shale shaker. Above the shaker is a 4-desitler cone assembly.

3) Centrifugal pump: GNSB4x3-11J, (11kw), 2 each, 1 pump for mud mixing, 1 pump for feeding the desilter cone.

4) Mud gun: GNNJQ50-3G, 1 each

5) Mud hopper GNSLM25, 1 each, matched with the 11kw centrifugal pump, to mixing mud for the water well drilling rig.

6) Submersible slurry pump 80YZ50-20(7.5Kw), feeding for shale shaker from mud pit

It is compact design, the whole GN200 GPM mud system with total height no over than 3.5m. And the total width is 2.4m. No equipment need to be removed during shipment. It can be shipped as a complete set in most countries and areas.

GN Solids Control manufactures customized dewatering units.

GN design dewatering unit is complete containerized unit with various pump and decanter centrifuges.

20’ Containerized Dewatering Unit is a smaller size dewatering unit, GN have big size 40ft for option.

GN provide optimum performance when combined with GN proprietary dewatering centrifuge. with PLC control. It is easy for operation and reliable for running.

GN 20’ mobile dewatering unit can be transported as a standard container for overseas and land shipping. The system includes all the standard dewatering components with the centrifuge mounted on a separate telescoping skid or on your own mud tank.