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Portable DI Tank & Membrane Cleaning Services

Through our 6000 square foot facility in Taunton MA Process and Water offers On-demand Services Deionization and Reverse Osmosis membrane restoration offerings; Gives customers reliable, economical ways to ensure high-purity water system uptime with consistent and sustained quality.

Services Deionization
Our Services Deionization (SDI) offering is specifically designed for customers in industries where high-purity water applications are common, such as the pharmaceutical, semiconductor, electronics and life sciences segments. As deionization systems eliminate ions and remove potentially harmful minerals from process waters, their specialized resins become fouled over time. Periodic cleaning and regeneration of a system’s resins is required for proper operation. Resin regeneration is a complicated process that involves precision handling of a variety of chemicals—often toxic and dangerous ones. Process and Water’s new SDI offering enables customers to outsource this specialized task. With production, delivery and installation of portable, cation, anion and mixed bed resins, customers can ensure that this critical task is being handled by trained professionals. They also can avoid the significant equipment, materials and staffing costs required for handling this specialized task in-house.

As part of our commitment to being a full service company, Process and Water owns and operates a Service DI division serving the New England Region. We specialize in critical application environments such as pharma, electronics manufacturing, laboratories and many industrial sectors. We have developed this business around providing critical DI water to industries with strict requirements for validation and consistency.

Activated Carbon

These units remove chlorine, chloramines and dissolved organic contaminants. Each replacement carbon unit contains virgin carbon to assure maximum water quality and service life of the bed.

Cation Resin

Cation resins remove positively charged dissolved ionic contaminants such as calcium, sodium, magnesium, potassium, iron and manganese. The cation resins used are very durable to provide stability against osmotic, thermal and impact shock.

Anion Resin

Anion resins remove negatively charged dissolved ionic contaminants such as carbonate, bicarbonates, sulfates, chlorides, nitrates and silica. The anion resins used offer stability against osmotic, thermal and impact shock. A variety of anion resins are available suitable for any water application.

Mixed Bed Deionizers

For higher quality water with a more neutral pH than separate bed systems, as well as enhanced silica and CO2 removal mixed bed deionizers can be stand alone systems or placed as a polisher after the separate two beds (cation & anion resins). Process and Water SDI units produce the quality of water required for any application, up to 18.3 megohm resistivity at 25 degrees C. In-line quality monitors immediately alert users when resin tanks need to be changed.

RO Membrane Cleaning and Restoration

Regardless of their applications they are used in, every reverse osmosis system requires periodic cleaning due to fouling and scaling that occur as the membranes separate impurities from feed waters. Process and Water’s new RO membrane cleaning and restoration service utilizes high-quality cleaning solutions and a thorough cleaning regimen to restore customers’ RO membranes to nearly new performance levels. While the actual membrane cleaning is handled offsite, Process and Water staff members comes to customers’ facilities to remove in-place membranes, replace them with reconditioned membranes, or install loaner membranes if necessary. Process and Water conducts pre- and post-testing of all cleaned RO membranes, and provides customers with reports detailing the cleaning process and resulting membrane performance Improvements in terms of flow restoration and salt rejection. In short, this new Process and Water service is a reliable and cost-effective way for customers to improve the performance of their RO systems and to extend the effective service life time of their RO membranes.


  • Physical inspection to identify signs of, telescoping, visible fouling or external damage on the feed spacer.
  • With membrane manufacturers’ specifications, each element is wet tested at standard conditions to compare permeate flow, differential pressure, and salt rejection. If the pre-test data shows the element performance will not be enhanced with cleaning or may be damaged, the customer is notified. If the procedure stops here, the customer is charged only a nominal testing fee.
  • In its own housing, each element is cleaned in the membrane cleaning station using a combination of cleaning formulas.
  • Each membrane is post tested and the data normalized to confirm the performance improvement.
  • If the elements are not being immediately re-installed into a system, a preservative can be added at the customers’ request.
  • Elements are sealed in a poly bag and boxed for transport. A copy of the membrane cleaning certificate identifying pre and post-test data is returned with each membrane.
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