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Shane Matthews – Page 3 – Syngineering Water

Author Archives: Shane Matthews

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Landfill Leachate processing with VSEP

Category : Water Treatment

Landfill Leachate generation is a major problem for municipal solid waste landfills and causes a significant threat to surface water and groundwater. Leachate can be defined as a liquid that passes through a landfill and has extracted dissolved and suspended matter from the landfill.  Leachate is the typically stored in ponds and treated.  The treated leachate can then be either released One of the most effective methods for treating landfill leachate has been found to be the VSEP systems either as a stand VSEP system or in combination with Reverse Osmosis available from Syngineering Water.  This treatment system will produce permeate that can then be either released into water ways or used as on site dust suppression.

Landfill Leachate Storage Pond

Feed leachate 6330uS, Permeate 314uS and Concentrate 2180uS

Leachate Feed 6330uS, Permeate 314uS and Concentrate 2180uS

Click Here for more information on VSEP systems


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Frac Water and Flowback – VSEP Membrane Treatment on Site

Category : Water Treatment

After well hole is drilled into these shale formations, casings are installed to isolate the well bore. The bottom section of this casing is perforated so that gas can more easily be removed. Once the casing is in place in addition to concrete reinforcing in the upper sections, water and sand are injected under high pressure into the shale deposit. This creates small fractures in the shale and provides openings making the formation porous for gas removal. When the water pressure is relieved, the small cracks in the shale begin to close, but the sand or ceramic particles help to “prop’ them open. These materials are known as “Proppants”. In addition to the water and the sand, small amounts of various chemicals are added for various purposes. These include biocides, surfactants, corrosion inhibitors, thickeners, and other materials.
This water that is used to fracture the shale formation is called “frac water”. The process of fracturing is also known as completion since this is one of the final steps in preparing a well for production of oil or gas. Frac water can also be known as “completion fluid”. When the pressure of this water is relieved, the water flows back up out of the well casing. This is known as “Flowback water”. Some of the water will remain down in the hole and be absorbed into the more porous areas. The amount of water that flows back can vary a great deal and can be anywhere from 10% to 90% of the water that is injected as frac water.

The Flowback water can be reused to some extent, but as the water is injected into the shale formation, it absorbs minerals, salts, organics, and also brings sediment back out with it when it flows back. At a certain point, this water becomes too “dirty” to reuse. The conventional thing to do at that point is to haul this water off by truck for disposal. Many well sites are in remote areas and do not have established connections to municipal; sewers or to disposal wells for reinjection. This hauling can involve a high cost and the use of many trucks that can put a burden on the local community.
Some Potassium salts are added to the frac water to begin with. Some salt in the frac water is desired, but very high levels of mineral salts that can cause scaling and plugging of the formation would adversely affect the operation. Also injecting frac water that has a lot of sediment can also plug the formation. So before the Flowback water is reused, sediment and other fouling materials should be removed. Onsite water treatment can provide almost unlimited reuse of the Flowback water and greatly reduce the need for truck hauling. In addition to the benefits of less hauling, many locations have scarce supplies of fresh water that is available for use as frac water. So, reuse of the Flowback water can reduce the amount of local fresh water that is consumed as well as reuse the amount of wastewater hauled away.

For more details – Syngineering Water – Frac Water and Flowback

Oil and Gas Drill Rig

Oil and Gas Drill Rig


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VSEP – Brine Squeezing and Brine Cystalising

Category : Water Treatment

VSEP or Vertical Separation Enhanced Process is an extremely simply and effective proven method of brine squeezing.  With over 400 installations world wide, the VSEP systems are a simple but very effective brine squeezing system.

Multiple stack VSEP units suitablle for dewatering the RO concentrate stream

Multiple stack VSEP units suitable for dewatering the RO concentrate stream

While VSEP is not completely immune to silica scale, silica takes much longer to attach to the membrane, and when it finally does, the deposition pattern on the oscillating membrane is not uniform.  Because of this, standard VSEP membrane
cleanings are highly effective in removing the silica deposits. Standing in contrast is VSEP, which is limited only by osmotic pressure. In fact, New Logic Research has installed VSEP systems to further concentrate brine generated by both HERO and
EDR systems at full scale. It is VSEP’s ability to act as a brine concentrator and multivalent salt crystallizer that has made it the leading choice for non-thermal brine minimization around the world.

For more details, Syngineering Water – Using VSEP as a Brine Squeezer

 


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How Do Hollow Fibre UF Membrane Systems Work?

Category : Uncategorized

This excellent video by Microdyn-Nadir shows how the hollow fibre modules work including how the systems are cleaned either by :

  1. Air scouring
  2. Forward flushing
  3. Back flushing
  4. Combination air scouring and back flushing

Click Here for more information on hollow fibre UF systems  available from Syngineering


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Fine Bubble Aeration

Category : MBR

Bio-cel Fine Bubble Aeration by Microdyn-Nadir and available with all Syngineering MBR systems improves the overall efficiency of the MBR system.  The fine bubble aeration optimises oxygen transfer and when combined with the latest designed and robust flat sheet membranes provides a very efficient MBR system.  Click here for more details on the Containerised or Packaged MBR Systems.

 

Phone Syngineering today to discuss :  1300 662 326


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WHY IS WATER EXTRACTED FROM THE COAL SEAM?

Category : Water Treatment

Why is there Water in Coal Seams?

Coals in Australia were formed up to 350 million years ago. Vegetation such as grasses, trees, leaves and other organic material fell to the earth in swamps or in areas that later became inland seas. Where the vegetation collected in sufficient quantities, and under the right conditions, the process of coal formation, or “coalification”, occurred (Bailey, 2013).

It is not unusual for the coal seams to contain water, collected either as the coal was forming “in situ” or by water entering recharge points in the coal seam in a similar manner to recharge processes for other groundwater aquifers (CSIRO, 2014).

Water trapped in situ contains salts and minerals that were a part of the inland seas in which they were formed. Water that has entered the coal seam via aquifer recharge will collect salts and minerals as it travels through the surrounding geological formations. These salts and minerals are then captured in the water within coal seams in the same way that they are found in surrounding aquifers (CSIRO, 2014).

CSG water contains various dissolved salts, and is best described as “brackish” water. For comparative purposes, seawater contains on average 35,000mg/l ppm (milligrams per litre) of salt and CSG water usually contains less than 6,000mg/l of salt (Independent Expert Scientific Committee, 2014).

Typical CSG Well

Typical CSG well design

The breakdown of the vegetation during coalification also resulted in the formation of methane gas.

CSG is a mixture of gases, but is mostly made up of methane (generally 95-97 per cent pure methane), nitrogen, carbon monoxide, carbon dioxide and inert gasses (Cook, 2013; CSIRO, 2013). Methane gas is compressed within the coal inside a complex arrangement of cracks and fractures – called “cleats”. Within the cleats, the gas is bound to the surface of the coal and held in place by the water pressure in the coal seam (CSIRO, 2013). The gas is only released from the coal when the water pressure in the coal seam is reduced to less than 35 metres of Head.

To reduce the water pressure and extract the gas, a gas well is drilled through the overlying geological formations to the target coal seam.

CSG production curve, Gas production vs water for a typical CSG well against time


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MCP or Mechanical Cleaning Process

Category : Water Treatment

MCP from Microdyn-Nadir and available with all Syngineering MBR systems has been used for several years now but is worth considering when designing an MBR system as MCP reduces operating costs by providing a far more effective submerged membrane clean when compared to air scouring alone.

The MCP granulate is added directly into the activated sludge. The airflow induced during the membrane scour/clean draws the MCP granulate up between the membrane sheets. As the MCP granulate rises, the membrane area is continuously cleaned through the direct contact of the granulate with the sludge on the membrane surface.

The fouling layer formed during the filtration 
process can be removed reliably without compromising the functionality of the membrane. In the downstream area outside the membrane modules, the current cause the granulate to move back to the base of
 the module where it enters again into the upstream flow. The MCP granulate has been designed for permanent use. It is retained in the filtration tank by 
a simple screen/strainer.

Call Syngineering today to discuss how MCP could improve your MBR system.

Phone :  1300 662 326


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Dewatering Milk Using VSEP Membrane Technology

Category : Water Treatment

An interesting application of the VSEP membrane technology.  We recently used the VSEP systems to dewater milk and as you can see this is an extremely effective method of dewatering milk.  For more details including results, Click Here


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Syngineering Panel Tanks

Tags :

Category : Water Treatment

Syngineering have been working with Kliptank to market a range of innovative panel light weight panel tanks.  The tanks come in several different heights, volumes between 60KL and 3000KL.  Each panel is made from plastic and weighs less than 30kg making the installation of these tanks extremely fast with typical installation taking less than 2 days.

 


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Syngineering – 5 years LTI Free

Tags :

Category : EHS

Congratulations to the entire team for 5 years LTI Free – lets keep up the great work

EHS meeting held at Syngineering head office in Brisbane

EHS meeting held at Syngineering



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