Coolant Treatment

1.Emulsion splitting

Oil-in-water emulsions are used as cooling lubricant emulsions in almost every metal networking industry. If they are out of date after some time, they must be processed and disposed of in accordance with the AbwV in accordance with precisely defined conditions and limit values. Since not every company is willing to have its obsolete coolant emulsions disposed of expensively by external disposal companies, the obsolete coolant emulsions are often processed in-house and discharged into the sewer network.

Our organic products are precisely designed for the treatment of cooling lubricant emulsions or oily waste water. With our products, the oil in the coolant emulsions and oil-containing waste water is split off and can then be easily separated from the rest of the now low-oil and low-carbon water.

2.Heavy metal precipitation

NET GmbH produces and sells additives for water treatment, including additives to precipitate heavy metals from the liquid phase as sulfides.

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3.Lime treatment

Almost every tunnel needs a drainage system that collects water that occurs in the building and allows it to drain away in a controlled manner. However, the function of the drainage systems is often impaired by limescale deposits, so-called sintering. Then there is a risk of damage to components and technical equipment due to moisture or excessive water pressure.

In Central Europe, limescale deposits in drainage systems consist primarily of calcium carbonate, which “precipitates” from the mountain or leachate, ie it dissolves. The deposits can range from very soft, watery structures to rock-hard deposits that can hardly be removed with a pimple. In the past, closures of drainage systems often had to be removed by milling the calcium deposits, which in some cases caused damage to the pipes.

The “precipitation” of lime is caused by a change in the lime-carbonic acid balance. Mountain water is carbonated in deep layers of the earth. This acidic water then releases lime from the surrounding rock and binds it until the lime-carbonic acid equilibrium is reached. If the mountain water becomes warmer and the pressure drops, which is normally the case with the transition to drainage, carbon dioxide is released and the lime that was previously bound by the carbon dioxide also “fails”. Contact with cement-containing building materials or the supply of oxygen from falling water can also lead to precipitation. The more alkaline the water, the more lime is deposited.

The cross-section of a drainage system required for the outflow of water can be kept free by regularly cleaning limescale deposits. However, this presupposes that the system is accessible everywhere, which is often not the case where the water enters the system. In addition, the drainage system must be cleaned with reasonable effort. The intervals between the individual cleanings must not be too long, otherwise the lime deposits will become too hard.

Our product works on the principle of hardness stabilization, which prevents precipitation of the lime. The hardness stabilization keeps the lime crystals in suspension by means of a physical process. Deposits that occur despite hardness stabilization are now also much softer and can therefore be removed more easily.

High performance cutting fluid emulsions need high-performance management

In parallel with the advancement in the manufacturing sector of the metalworking industry to even higher speeds and high-alloy materials suitable for processing high-performance cooling lubricant emulsions were developed. Here, the lubricating component “mineral oil” partially or completely replaced by synthetic compounds such as polyether or ester.

The development of relevant concepts for the recovery and disposal of spent cutting fluid emulsions could keep pace with the rapid pace of development of new cutting fluid emulsions little step.

Only recently, results are available with special additives and procedures, in the context of the changing legislative safe disposal and reprocessing of spent provide cooling lubricant emulsions processors. Netsplit is the modern requirements fully compliant.

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Via conventional cracking process can be divided on :

Users of cooling lubricants are available for emulsion breaking a number of methods are available, representing however now no longer the state of the art:

  • Separation of the emulsion obtained in each case by the addition of acids and precipitating reagents such as iron salts, followed by neutralization. Disadvantages of this method are the high salt content of the effluent, the plant-specific cost and the sensitivity to contamination by hydraulic and leak oil.
  • Difficulties at the time and especially in the future disposal of the resulting large amounts of hydroxide, which must be deposited in most cases.
  • The ultrafiltration as a separation method has gained wide importance. However, a disadvantage is the high capital and operating costs, the sensitivity to different types of emulsions as well as the disposal problem of the UF concentrate. Here, in combination with Netsplit be geschafen G remedy. Various products and processes are registered for this patent.

Netsplit products: economical and environmentally friendly

Organic splitter as Netsplit be used for the separation of oil-in-water emulsions, while often the existing facilities for minor modifications, re-used.

The gap oil is usually fed to a thermal use or recycling, the splitting of water can be supplied, for example using a patented process step by Bayer to the wastewater.

Netsplit primary splitters

Netsplit primary splitters are tailor-made for treatment and disposal of various emulsions.
The advantages are:

  • very good water quality
  • no salt stress
  • fast emulsion separation
  • high immunity against overdose
  • no risk of corrosion
  • minimal influence of the process temperature on the splitting result
  • Combinations with other treatment methods such as ultra filtration.

Our other core businesses are:

Heavy metal removal, Lackkoagulation, flocculation and hardness stabilization.

If interested please ask for our documentation or have a wastewater sample review by experts with us.

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