WASTE WATER TREATMENT FOR ELECTROPLATING AND POWDER COATING

MKR Metzger Abwasserbehandlung für Galvanik und Pulverbeschichtung

OUR PIONEERING WASTE WATER TREATMENT FOR WET-CHEMICAL PRE-TREATMENT

THE CRITICAL POINT IN ELECTROPLATING AND POWDER COATING - WASTEWATER TREATMENT

Electroplating plants and powder coating include the following types of surface treatment for metal (steel, aluminium, magnesium, etc.) and plastics:

  • Cleaning (e.g. degreasing)
  • Pickling and decapping (creating surface roughness, e.g. aluminium)
  • Protecting and activating (conversion coating, passivation)

A high quality of water is required for all steps in the electroplating process. Wastewater treatment of the rinsing water is also becoming increasingly important, as the quality of the rinsing water plays a decisive role in the adhesion of the powder.

OUR EVAPORATION TECHNOLOGY AS A SUSTAINABLE SOLUTION FOR ELECTROPLATING WASTE WATER TREATMENT

In order to keep the rinsing water quality consistently high, we rely on future-oriented atmospheric evaporation technology. It offers many advantages in terms of energy (up to 50 % energy savings compared to a conventional vacuum evaporator). The distillate quality also leaves nothing to be desired, which is why we are able to keep the water usable in a circulation system. In addition, our use and quantity of chemical agents in electroplating waste water treatment is exemplary, especially in terms of effectiveness and ecological compatibility.

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Get in touch via Mail: info@mkr-metzger.de or Phone: +49 9091 5000-0
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THE STRENGTHS OF OUR SUSTAINABLE EVAPORATOR SYSTEM ARE PARTICULARLY EVIDENT IN THESE AREAS:

  • Degreasing baths
  • Rinsing water after degreasing
  • Pickling waste water (here, too, we impress with viable solutions)
  • Rinsing water after pickling
  • Rinsing water from iron phosphating
  • Rinsing water from zinc phosphating
  • Rinsing water from chromium-free conversion/passivation
  • Rinsing water from nanoceramics

Proper preparation of your waste water also makes a significant contribution to the quality of the distillate. This is why our system has a modular design consisting of individual components (e.g. bag filter unit, pH adjustment and IBC filling station, e.g. for the concentrate), which prepare the waste water for the evaporator. This also ensures significant energy savings and greatly reduced disposal costs for the concentrate.

THERE IS NO STANDARD SOLUTION - WE ALWAYS TAKE CARE OF YOU INDIVIDUALLY!

Low energy costs and low disposal costs combined with the highest distillate quality are our priority. Fully automatic waste water treatment in the electroplating process is therefore a matter of course for us. This also includes the use of cleaning solutions for the waste water system. High waste water availability is always our top priority.

So that we can provide you with targeted advice, we always start by analysing your specific task, your current situation. We then carry out a professional implementation. We take care of everything, right down to the last detail.

THIS MEANS: COMMISSIONING, TRAINING AND AFTERSALES, ALL FROM A SINGLE SOURCE - SO THAT YOU NOT ONLY GET STABLE WATER VALUES, BUT ALSO A SMOOTH OPERATING PROCESS!

Would you like to know more?

Get in touch via Mail: info@mkr-metzger.de or Phone: +49 9091 5000-0
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USER EXAMPLE

MKR Metzger - Spülwasser reinigen durch Verdampfer bei Geberit Mapress 2

The ET evaporator in use at Geberit Mapress

Where press fitting systems made of stainless steel, carbon steel and copper are produced, absolute cleanliness is required. Geberit Mapress GmbH uses an MKR Metzger GmbH evaporator to treat the aqueous emulsions used in the cleaning baths. The evaporator turns the process water into reusable clean water.

Product groups

ET 150

Evaporators

Mechanical vapour compression leads to continuous reuse of the energy contained in the steam. The evaporation heat exchanger of the evaporator with forced flow and consistent use of the heat from the distillate enable the low-energy consumption of 35 Watt hours per litre. The compression control and integrated distillate after treatment by a coalescer product top distillate qualities. With this type of evaporator, due to the built-in mechanical defoamer, the addition of defoaming additives is necessary in only a few exceptional cases. The evaporator operates fully automatically. The sensors monitor the process and prevent system overload. The system is cleaned almost fully automatically at fixed intervals. Generously sized doors ensure free access to the machine components. The distillate is hygenised by the high evaporation temperature of approx. 100°C and can be re-used in the production.
UC 1

Filtration technology

Ultrafiltration involves the purely mechanical separation of mechanicals, without any use of chemicals. This is achieved not with a standard filter, but with the membrane elements of the MKR ultrafiltration systems. Here the material is separated due to the molecular size and shape. Depending on the application, different membranes are used in the ultrafiltration, for example, to remove the oil load from washing-active substances. Use of this selective, pressure-operated membrane process is one of the safest and most reliable treatment solutions. MKR ensures its ultrafiltration systems are high quality by using stainless steel.
OTC 350

Disc stack centrifuges

PROCESS Whether in the mobile version or used as a stationary system: Disc stack centrifuges by MKR clean metalworking fluids, cutting oils and washing media in bypass mode during on-going operations.
The respective process medium is pumped from the machine tank and is then pumped through a centrifuge. The cleaned liquid, from which  particles and tramp oils have been removed, is then returned to the production plant or washing system. This means that the media can be used longer – without quality loss, as confirmed by the leading manufacturers of process media. This means lower consumption and disposal costs. Another positive aspect is the ability to select the separator type for a specific interfering factor. Depending on the MKR machine type, separators with sludge removal, de-oiling or combined action are used. They enable cleaning capacities from 300 to 3000 litre per hour. In addition to tramp oils, ultrafine particles up to a size of 2 µm are removed. And what is also practical: The separators operate uniquely with the physical principles of
centrifugal force and gravity. They therefore require no filter aids whatsoever. THREE-PHASE DISC-STACK SEPARATOR It ensures complete and exact tramp oil and solid removal. In addition, water can be removed from hydraulic fluid cycles. MKR offers the choice between separators that collect solids and self-sludge removal separators. Tramp oil is absorbed and separated – regardless of whether the oil is floating on the surface or is dispersed in the metalworking fluid due to turbulence.
T 700

Drum centrifuges

PROCESS Where which centrifuge cleaning system is more suitable, essentially depends on the quantity of solid particles in the liquid to be cleaned. Drum separators that collect solids can hold up to 5-10 kg sludge maximum. They then have to be cleaned manually. If this cleaning interval cannot be met, MKR recommends use of self-sludge removal systems.
The two/three-phase drum separator: This can be used to remove solids from emulsions with a high solids fraction in continuous operation. Centrifugal force ensures that the solids settle in the sludge insert. It
is possible to choose between separators that collect solids and self-sludge removal separators. In the third phase, tramp oil is removed.