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Water Treatment

Combine three steps in one unit with this wastewater-treatment process

A cyclic activated-sludge (AS) process, trademarked te-cyc, combines biological treatment and solids settlement in a single treatment step, thereby significantly reducing the footprint compared to a conventional AS plant, which requires three separate processes — primary settlement tanks, aeration tanks…

Landfill Gas Processing: Plant-Design Considerations

There are several technologies used in the disposal of landfill gas (LFG). Here are some key elements that can guide engineers in designing an optimized LFG processing plant People generate trash. Trash is stored in landfills. Landfills contain bacteria, which…

An electrotrophic system that treats swine sewage in one step

Researchers from the Biological Systems Unit at the Okinawa Institute of Science and Technology Graduate University (OIST; Japan; www.oist.jp) have developed a bioelectrochemical system that uses bacterial communities to break down organic material from raw wastewater, and removes both nitrates…

Recently Published Books for the CPI: May 2021

The following recently published books may have relevance to various sectors of the chemical process industries (CPI). Driving Continuous Process Safety Improvement from Investigated Incidents. By the Center for Chemical Process Safety (CCPS), Wiley Publishing, 2021, 288 pages, $140.00. Industry…