Monthly Archives: April 2018

Automatic Dewatering unit centrifuge system for oily sludge separation

Dewatering unit, is also named as chemical dosing system, is widely used in waste water treatment and oily sludge treatment. The right and suitable chemical dosing is the core point of for a better separation result of oily sludge separation. The function of a chemical dosing dewatering unit is too treat the liquids to make it easier for next-step equipment process or improve the separation performance.

The 4-tank Automatic chemical dosing system is an optimized design by GN Solids Control. The system is including 2 chemical dosing unit:

1) The first chemical dosing unit is a 3-tank automatic power Polymer Mixing System. The chemical mixing tanks are made from stainless steel for longer lifetime. The 3 tanks are connected to each other on the top, each tank is equipped with an agitator to help for mixing.

When the power Polymer is fed by the auto-auger feeding system though the stainless mixing hopper, the power polymer will be mixed in the 1rst compartment. When the 1rst compartment is full, the mixed chemical liquid will flow to the 2nd tank. When the 2nd tank is full, then it flow to the 3rd storage tank.  And then it can be used by decanter centrifuge or premixing tank, or high G drying shakers. The chemical dosing system is including Solenoid valve, Piping System, Flow Meter and PLC

Control System for automatic continues operation. Operators can set the time for polymer mixing and dosing. During the chemical liquid flows from the 1rst to the 3rd tank, the chemicals will be quality for used. Then from the 3rd tank, the quality liquid chemicals can be transferred for dosing.

2) The 4th tank is a stainless steel tank with agitator for another chemicals mixing and dosing, it can be used to mix coagulant for  treatment. The previous design is with a separate Polyethylene tank. GN Solids Control update the design to combined together with the PAM mixing system. In this case, the total design is more compact and the material standard is higher. And it looks much nice now.

GN will attend the Environmental show IE expo China 2018 in Shanghai

IE expo is the Asia’s leading environmental show on environmental technology solutions, waste water treatment, Waste Air purification and the contaminated soil purification. You can visit its website to fine more information of the environmental show: http://www.ie-expo.com/
IE expo China 2018 will be held in the Shanghai New International Expo Centre (SNIEC) from May 3 to 5. Over 55,000 visitors from 60 countries and regions will come to Shanghai over the three days. GN booth No. is W2566. Welcome clients come and check.
Below is the high potential environmental area markets IE expo China 2018 will cover:
• Waste Water and Sewage Treatment
Waste Management
• Site Remediation
• Air Pollution Control and Air Purification


GN will take its most popular waste management equipment for the environmental show
1) GN 14 inch high speed decanter centrifuge will be showed on the environmental exhibition. It is the most popular centrifuge size for different applications. 14 inch mean the bowl diameter of the centrifuge is 14 inch. GN Solids Control has many different sizes 14 inch decanter centrifuges to suits for different applications. Like GNLW363C and GNLW363C-VFD for mud solids control and drilling waste management, GNLW364C and GNLW364C-VFD for water treatment which have a high standard for the separation result.
2) A portable size vacuum slurry pump will be available on the environmental exhibition.
GN brand vacuum transfer pump has a very wide range of applications. It is a pneumatic slurry transfer vacuum pump for liquid, slurry, and solids transfer. With special structure design, the vacuum transfer pump can be used at tough environmental for solids transfer with high working performance and less maintenance. The pump can transfer various kinds of materials that other pumps or other transfer device cannot do, like the materials with high gravity and high density, solids content max. up to 80%, and so on.
GN has different sizes vacuum slurry pump to cater for different project demands.