I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chementator Briefs
Ultrathin membrane Researchers led by professors Hideto Matsuyama and Tomohisa…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUS
Focus on Sensors
Wireless transmitters save on level sensor installation Reduce the cost…
NEW PRODUCTS + Show More SHOW PREVIEWS

Comment Environment, Health, Safety & Security

Making biogas from waste with a low organic content

By Tetsuo Satoh |

The effluent discharged by domestic industries in Japan amounts to approximately 11.1 billion ton/yr. Most of this waste is comprised of relatively low concentrations of organic matter. Today, most of this effluent is treated by aerobic biotreatment (activated sludge). However, activated sludge treatment not only consumes large amounts of electric power needed to run blowers or fans, but it also produces large volumes of sludge. Now, an anaerobic fermentation process developed by Sumitomo Heavy Industries, Ltd. (SHI; Tokyo; www.shi.co.jp), in collaboration with the National Institute for Environmental Studies (NIES: Tsukuba City, both Japan; www.nies.go.jp), promises to not only reduce the volume of sludge produced, but to save up to 75% of the energy needed for the treatment. Conventional biogas fermentation treatment can only be applied to effluent containing organic matter at concentrations of 2 to 20 grams CODCr/L (chemical oxygen demand, dichromate) and only at temperatures between 35 and 37°C. The new technology uses a specific bacteria that is capable of processing effluent containing organic matter at concentrations of about 0.3 to 1 g CODCr/L — typical of most effluent generated today — and also at ambient…
Related Content
Avoiding SIL Misconceptions
Engineers must refine their foundational understanding of process safety in order to avoid common misconceptions about safety instrumented systems, including…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Improving chemical production processes with IIoT and AI technologies
New filtration technology for highly corrosive media
PTA production: Lowering OPEX without compromising on quality
Sure that zero means zero in your zero-liquid discharge (ZLD) process?
How separation processes profit from Industrial Internet of Things (IIoT) solutions

View More