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Walk-in fume hoods for distillation processes

The UniMax series of floor-mount fume hoods (photo) includes a wide selection of models that feature fire-suppression systems. Standard models are available as follows: 6 to 24 ft wide; 4 to 8 ft deep; and 7 to 16 ft high.…

These membrane modules are now available in PVDF or PES

The new T-CUT tubular modules (photo) with membranes made from polyvinylidene difluoride (PVDF) or polyethersulfone (PES) complement this company’s CUT product range with a robust and efficient tubular module. The outstanding stability of the membranes and the possibility to apply…

A level-monitoring probe with an integrated temperature sensor

The Sentinel Float Stick System (photo) serves as a wireless-communication link in the remote monitoring and control of tank levels and temperatures for offsite data processing. Consisting of a magnetostrictive level probe with integrated temperature sensors mated with a Sentinel…

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Advantages Gained in Automating Industrial Wastewater Treatment Plants

Process monitoring and automation can improve efficiencies in wastewater treatment systems. A number of parameters well worth monitoring, as well as tips for implementation are described  There is growing interest in automating wastewater treatment processes across a broad range of…

Challenges of Handling Filamentous and Viscous Wastewater Sludge

Excessive growth of filaments and biopolymers in activated sludge should be controlled in CPI wastewater-treatment plants, as both lead to sludge that is hard to handle. The sticky behavior of such sludge can be minimized by the addition of polyaluminum…

Magnetically Coupled Pumps: Structure, Function and Best Practice

Understanding pump internals, especially the various sealing and coupling arrangements, is a critical step in selecting the optimal pump There is a significant risk for operators associated with the pump selection process. Economic issues, such as procurement and operating costs,…

AODD Pumps in Chemical Processes

Advancements in efficiency and the ability to handle a wide array of chemicals combine to make the air-operated double-diaphragm (AODD) pump a useful choice for chemical processors The circumstances surrounding the development of the air-operated double-diaphragm (AODD) pumping principle six…

WEFTEC Show Preview

Presented by The Water Environment Federation (Alexandria, Va.; www.wef.org), the Weftec 2016 conference and exhibition will take place Sept. 24–28 at the Morial Convention Center in New Orleans, La. In addition to an exhibit hall featuring nearly 1,000 exhibitors, this…

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Design of Experiments (DoE):How to Handle Hard-to-Change Factors Using a Split Plot

This methodology facilitates multifactor testing. However, it comes at a price: a loss in power for detecting effects The traditional approach to experimentation — often referred to as the “scientific method” — requires changing only one factor at a time…

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Terephthalic Acid Production from p-Xylene

This column is based on “Terephthalic Acid Production from p-Xylene — Cost Analysis,” a report published by Intratec. It can be found at: www.intratec.us/analysis/terephthalic-acid-production-cost. Terephthalic acid is an aromatic dicarboxylic acid, mainly used to produce saturated polyesters, primarily PET (polyethylene…