DMP Corporation

400 Bryant Blvd
Rock Hill,  SC  29732-8210

United States
  • Booth: 569

Solving Unique Water Problems

Treating wastewater and purifying process water for aerospace manufacturing, though similar to treatments utilized in conventional metal plating, is full of unique challenges because of the need for highly pure water. As a result, the adoption of reuse and recycle systems using ion exchange technologies are a particularly good fit for this industry. Our extensive expertise in water recycling and our knowledge of worldwide regulatory limitations, makes DMP a great choice for aerospace manufacturing.

Aerospace components manufacturers, especially defense contractors, use cyanide cadmium plated components for high-wear, high-tolerance parts. The process causes toxic waste that must be carefully treated. The waste streams also contain concentrated suspended solids, making sludge management and disposal costly. Finally, water usage for metal plating, composite molding and electronics manufacture is very high, often prompting the need for in-plant recycling solutions.

As water treatment experts, DMP has immense knowledge and experience in various technologies and applications relating to:

Heavy metals removal, chemical precipitation

Cyanide and cyanide cadmium removal

Hydrocarbons separation from wastewater

Specialty chemicals & technologies

Sludge dewatering

Advanced automation & controls for wastewater treatment

We have expertise in aerospace subsectors such as engine manufacture, airframe construction, die casting, electronics and semiconductor manufacturing, and more.

 Press Releases

  • DMP Helps Aerospace Parts Finishing Company Recycle Water and Improve Rinsewater Quality in Tanks

    Posted February 29, 2016 Categories: Aerospace & Defense,Water Reuse & Recycling

    A large Wichita-area aerospace manufacturer with five types of metal finishing lines (anodizing, pre-penetrant etches, chemical film, passivation and other) could not provide enough high-quality rinse water to meet customer demand.  As an approved supplier to nearly 20 aerospace manufacturers, the facility’s quality of both rinse water and final product is paramount.  The aerospace manufacturer knew of DMP Corporation’s excellent local reputation through other industry firms and contacted us, with the goals of increasing rinse water quality and quantity, and reliably meeting discharge limitations without losing production time.

    Aerospace facilities are among the most high-tech plants in manufacturing, and require an efficient, effective wastewater treatment system.  However, even the top aerospace manufacturers and suppliers can find it difficult to make good wastewater treatment decisions due to the complicated nature of the many processes involved in aerospace manufacturing.  A company specializing in wastewater treatment, like DMP, can recommend and implement solutions in a cost-effective manner.

    The existing 20-year-old wastewater treatment system had been repaired many times and was incapable of increased capacity.  Second, the pure water system could not produce enough clean water for rinsing.  DMP performed a complete water survey of the facility.  We sampled all process lines and observed daily operations.  We analyzed many samples at no cost and drew on our past experience to develop a dependable design.

    Our main recommendation was to re-pipe a portion of the facility to separate low-Total Dissolved Solids (TDS) and high-TDS rinses.  Low-TDS rinses would be processed in an efficient water recycling system and high-TDS rinses would be combined with spent chemical baths, treated in a new conventional wastewater treatment system and discharged.  To reduce costs, a large portion of the existing equipment was included in the new DMP design.

    The project was delayed several times as facility ownership changed but the problems did not disappear, as a large increase in aircraft production (a good problem to have!) further increased the facility’s workload.  DMP proposed a staged installation schedule to minimize production delays.  As planned, the project was installed successfully without loss of production.  With the new system, the aerospace manufacturer expects to continuously meet its discharge limits, recycle a large portion of its high-quality treated water, and make its wastewater treatment more efficient and less disruptive to operations.

    Part of DMP’s guarantee is to provide continual service as needed through remote monitoring and chemical delivery.  As the facility’s new system was installed and implemented, DMP was there every step of the way.

  • DMP Shows Aerospace Manufacturer the Value of Versatile Wastewater Systems

    Posted February 12, 2016 Categories: Aerospace & Defense,Batch Treatment Systems,Water Reuse & Recycling

    Wastewater treatment within aerospace manufacturing is rarely a one-step process.  That’s true of the manufacturing industry at large, but especially for organizations that deal with heavy metals,

    chemical finishes, and oil and grease, like aerospace and military manufacturing.  Contaminants such as cadmium cyanide make it difficult for some manufacturers to meet strict discharge limits without investing in state-of-the-art technology.  This is why it’s important for every aerospace manufacturer to work with experienced treatment providers who know exactly which systems are necessary.

    Leaning Too Heavily on Evaporation

    One southern California-based aerospace manufacturer had an existing evaporator-based wastewater treatment system.  Rather than using pretreatment with automation prior to evaporation, all wastewater was sent directly to the evaporator.  Evaporation without pretreatment created several problems: 

    • Higher wastewater concentrations required more energy for evaporation. 
    • TSS built up within the evaporator and required continual cleaning — about a week of downtime every month. Cleaning required additional labor, which reduced the company’s available workforce and flexibility. 
    • Sludge removal costs were high. By creating more sludge, the manufacturer unnecessarily increased its wastewater treatment costs. 
    • The process took more time than necessary. 

    Bottom line:  without an effective pretreatment wastewater system, the company was paying more than it needed to for a less effective solution. 

    Multi-Step Process is Key

    Treatment was becoming unacceptably expensive and less effective than required, plus an efficient means of cadmium cyanide destruction was needed.  For those reasons, the manufacturer turned to the experts at DMP Corporation.  DMP has a long track record of wastewater treatment results within aerospace and military manufacturing, including the unique aspect of cyanide treatment.

    DMP quickly saw that simply sending wastewater to the evaporator was not an efficient practice.  In this case, less technology and equipment meant higher costs, greater maintenance and poor results.  Instead, DMP’s team showed the manufacturer how it could optimize its evaporator with better feed water and by using the method as a step in the process, not a one-stop solution.  Using ion exchange for water recycle and batch treatment for solids removal means that wastewater is now clean enough for effective evaporation.

    More Technology Can Actually Lead to Lower Overhead

    It’s understandable to think that adding a process will create higher costs and maintenance, but in this case, the opposite was true.  By relying less on the evaporator and more on an integrated, automated wastewater treatment platform, the company expects to reduce O&M costs by 25 to 30 percent.

    But it wasn’t just about making the evaporator more effective and less costly.  By incorporating new technologies like ion exchange for water recycle and batch treatment for solids removal, and by understanding more about the entire wastewater treatment process, the aerospace manufacturer can focus more time and money on its operations and less on its wastewater solutions.