waste management

Various Waste
Now China is like old UK, we got many problems with coal usage, we knew it, trust me, we knew it, and still, we are on the old track, having the same problem, maybe not a tragedy yet, but close.
For environment problems, we need to handle much more than coal, different pollution comes to us before we realized it was our price for developing.
And we never realized that when we did it, at least we never thought it was a problem.
2016-12-08-oil-sludge-treatment-system 2016-12-08-oil-slurry-separation
Lucky now we know, now we wake up, in the smoke, we are trying to repair, find solution for the damaged planet. The biggest job we can handle is not so related to air pollution, or water pollution, it is part of them, and fortunatly we are part of it.
This time a client comes to us, need to separate the waste, even for this project, waste from different place. With differnt size particles.
Solutions From GN
When we analyse the site waste, from pictures, samples, we decided to use a system, which contains a shale shaker, and a decanter centrifuge. Shale shaker for dispose most of the big ones, then centrifuges with foluccent maybe, maybe not, to separate the small ones, to reuse water at the same time.
About This System
For thic specific project, we are using GNZS594E shale shaker, with G force upto 7, and armed with composite material screens to increase the equipment life time. For the centrifuge, we are using most popular model GNLW363CG-VFD, SS2205, tungstun carbide tiles screw etc.
This same logic is widely open sourced, can be extend to different similar ideas, different shaker, different centriruge, also work.
Oil sludge is the by-product when producing oil, mixed with water, oil, and solid sediment, which is the dangerous waste but has high recycling value. With the increasingly tense supply of oil resources, many countries are doing researches in oil sludge recycling technology. The pyrolysis technology is drawing wide attention of researchers all over the world with its advantages of disposal thoroughly and high energy recycling. The proper oil sludge treatment is essential since these waste materials are hazardous to human and environment.
In oilfield operations oily sludges are produced as sediments in tanks and apparatus, as well as from oil spills (e.g. in the course of maintenance / repair work, or due to pipeline leaks). Those sludges, in their original form, can have extremely high solids contents at moderate to high oil contents. However, at the time when the sludges from different sources are combined and prepared for treatment, the oil / water / solids ratios are such, that treatment with normal oil sludge processing equipment is easily possible. Very often oilfield sludges are collected in lagoons and withdrawn from there for processing, rather than being processed directly downstream of the source / collection point.
The differing origins and compositions of waste oil mean that its water, oil and solids content can vary considerably. A water content in the order of 40-80% by volume, approximately 10-50% by volume oil phase with rather high viscosity, and a high solids content (in the order of 10-40% by volume) with potentially very large particle sizes, as well as potential content of significant amounts of other debris often characterize this product.
Compared to many other waste oil applications, the product properties oil field sludges require special attention be given to the mechanical pre-treatment of the sludges prior to processing. And because the recovered oil is usually not refined on-site, but rather added to the crude oil stream before it is sent to refining, the oil quality is normally sufficient using 3-phase decanter technology, which means these systems can typically be designed with one single 3-phase separation step.

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?

drilling waste management

drilling waste management

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.