GN Nodig Mud Recycling System

Dewatering unit is also called flocculation unit, it means to flocculate the extra fine particles with the help of 2 or 3 chemicals into larger ones for further separation by the decanter centrifuge. In many regions and countries in the world, only a solid control system and a drilling waste management system are not enough to be a complete zero discharge closed loop without the help of the dewatering unit.

In this case, the dewatering unit is used for following applications:

1. Alongside the drilling rig systems, the dewatering unit is used for separating out the extra particles from the solids control system when the drilling mud in the solids control system has been used for several times and there are lot of extra fine particles smaller than 2 microns.
2. In a mud plant or mud station especially for the dewatering project. In this case, the drilling mud is storage in some tanks waiting for being treated by a dewatering unit, but this place is not alongside the rig.

There are still some other applications the dewatering units could serve:

Oil sludge project, in such project, the condition of mud is similar as above mentioned mud for the dewatering units, the sludge is of high viscosity and the solids particles are very small. So the operators need to add some chemicals to merge the particles into larger ones. This is a jobsite working video of GN mud mixing system in this case.

In previous projects, GN dewatering units are also suitable for mud tank cleaning projects, with some auxiliary equipment and devices.

In some countries, when the environment standard is high, some clients even use dewatering unit for TBM project.

GN has some standard configuration of dewatering units, mostly ,the dewatering unit is installed in a 20 ft container and could be transported as a 20 ft container. And it is designed for 2 chemicals. According to clients’ customized request, there are more designs available.

Firstly THE WASTE

Well like everything you want to manage, you should know it. So basically where is it from, what is it consist of, the charactor densitiy, viscosity, solids content, size distribution.

If you do not know, do not worry, there must be a lot of labs ready to help you.

THE RESULT

Then what kind of result you want?

Any standard you need to comply?

Or based on the waste analysis you have, and find what you do not need, or what you need, then decide what to be separated out. And how?

The Waste Management Equipment

There are a lot of equipment based on different material, different purpose, different application. While lots of them have same / similar principle. For drilling related waste and environmental projects, below equipment is the basic ones

Drying shaker, like the other shale shakers, but have higher G force, so can separate higher viscosy parts, or the fluids wanted to stay with solids.

Cuttings dryer, it is working like a centrifuge, vertical, with screens. so the liquids can be able to sepated in the solids looks like dry parts.

Well at the same time, some people may also consider solids control equipment as part of the waste management equipment, so we also count on shaker, mud cleaner, centrifuge etc.

Decanter centrifuge, the centrifuge is almost everywhere, even decanter, most of them seems like same but acturally different, with different specifications.

Dewatering unit, chemicals is helpful on all these progress.

As a professional waste management equipment supplier, GN is now ivesting a TDU, hopefully it will be tested soon.

Material will be fed to a feed hopper mounted on a pugmill. From the pugmill, material is transferred to the feed auger via a transfer auger. The feed auger conveys material into the PTU and maintains a seal/airlock for the system. From outside, that is how the TDU works.

Thermal desorption first regarded as an environmental remedy era in 1985 whilst it turned into particular inside the report of selection (ROD) for the McKin website in Maine. it’s miles regularly known as “low temp” thermal desorption to differentiate it from excessive temperature incineration. An early direct fired thermal desorption mission turned into the remedy of 8000 heaps of toxaphene (a chlorinated pesticide) infected sandy soil at the S&S Flying offerings web page in Marianna Florida in 1990,[1] with later initiatives exceeding one hundred seventy,000 tons on the Cape worry coal tar website online in 1999. a standing report from the united states Environmental safety company (USEPA) shows that thermal desorption has been used at sixty nine Superfund sites through FY2000. further, hundreds of remediation initiatives were completed the usage of thermal desorption at non-Superfund sites.

severa desorber sorts are to be had these days. a number of the greater not unusual kinds are listed below.

indirect Fired Rotary

Direct Fired Rotary

Heated Screw (hot Oil, Molten Salt, electric powered)

InfraredMicrowave

maximum indirect fired rotary systems use an inclined rotating steel cylinder to warmth the feed fabric. the warmth transfer mechanism is commonly conduction via the cylinder wall. on this form of machine neither the flame nor the products of combustion can contact the feed solids or the offgas. think about it as a rotating pipe inner a furnace with both ends sticking outside of the furnace. The cylinder for complete scale portable systems is typically five to eight ft in diameter with heated lengths starting from twenty to fifty ft. With a carbon steel shell, the most solids temperature is round 1,000 °F, whilst temperatures of one,800 °F with unique alloy cylinders are attainable. overall residence time on this type of desorber commonly stages from 30 to a hundred and twenty minutes. treatment capacities can range from 2 to 30 tons in line with hour for transportable gadgets.

It was not a good story, at this age, in the colleage time, when we heard of made in China, it is a shame, it is a joke. So when we go out to the real world, wanna find something we can be proud of, or change something to be. That is how I come here and stay so long time.

GN Solids Control organized overseas tour for our excellent employee from engineering and production departments.There are two group, one group to Thailand, the other group to Europe. GN Select the excellent employees based on contribution, value recognition and loyalty to the company.

Then when we discuss with others, we know that thank god we are thinking in a simple way about the world, that high quality matters, no matter what background, what big untouchable clients, quality matters, cost matters. That is how basically the world works. So back to where we start, that is always we value.

As someone would say, employer is the client of employee. GN beleive the excellent employees are the core assets to the company. We take care of our employees, respect them, and offer them good salary and bonus. We know it’s our exccellent employees who delivered the value to customers. Every year, GN will select the best employees and offer them both material and spirit reward.

That is how we call it one team, one dream.