Wang has created a wastewater system "in a box." Each system, built by re-purposing a shipping container, is low power, low maintenance and highly efficient. Built from weathering steel, these containers are designed to be tough and can be dropped on site by helicopters.
The system’s scorecard is so good that it could be deployed anywhere – from small, rural communities to forward operating bases, like those in Iraq or Afghanistan. Currently, the typical 600-soldier forward operating base requires a daily convoy of 22 trucks to supply the base with fuel or water and dispose of wastewater and solid waste. With few mechanical parts and a small footprint, the system is ideal for military use, Wang says.
“Currently, human wastes are typically burned in burn pits, and the wastewater is usually hauled away and dumped by local contractors,” Wang explains. “This results in high costs, security issues, potential health risks, negative environmental impacts to the hosting country and a potential negative image.
“Moreover, almost all fresh water used in the camp – including water for drinking, bathing, showering, laundry, car washing and toilet flushing ¬– is from outside sources in the form of bottled and surface water. A deployable and easy-to-use water reclamation station, which transforms wastewater into reusable water within the base, would improve the base environment, security, soldiers’ health, stewardship of foreign lands and concurrently reduce cost and fresh water demand from off-base sources.”
Current wastewater treatment options include membrane bioreactor, activated sludge, fixed film or on-site septic systems. Similar to these methods, Wang’s process uses microorganisms to break down the organic pollutants. Membrane bioreactor, activated sludge process and fixed-film process have been built using standard shipping containers, too. But that’s where the similarities end.
The membrane bioreactor process, while similar in size and quality of effluent produced, has extremely higher energy and maintenance costs, and up to 10 times more expensive parts.
“The fixed-film system, as developed by other companies, needs to be monitored and controlled constantly,” Wang says. “Plus our system is much smaller than their systems – only 20-30 percent of the size of these systems for the same treatment capacity. Our system does not use any media, which significantly reduces construction and maintenance cost.”
Wang’s system, named a baffled bioreactor (BBR) by Wang, modifies the conventional activated sludge process by using baffles to create a maintenance-free intermediate settling chamber for sludge return. It uses off-the-shelf, low-tech parts to treat wastewater at a level that exceeds federal standards. The water can be used for non-contact applications, including toilet flushing and car washing.
Although this project is focused on military needs, Wang says the small, low-maintenance and low-power system makes sense for small communities, mobile home parks, motels and even facilities in remote areas, such as highway rest areas and camps.
A few days ago, the U.S. Army approved Wang’s request to demonstrate a full-scale, company-size water reclamation station for advanced wastewater and non-potable reuse. During this project, he will also explore the feasibility of producing potable water from wastewater in emergency situations.
“A lesson learned from Hurricane Katrina is that untreated sewage can cause many health and psychological problems for displaced people,” Wang adds. “The transportable, modular baffled reactor units could even be deployed to regions where natural disasters occur to quickly prevent untreated wastewater discharge and improve hygiene.”
Mindy Limback | Newswise Science News
Further reports about: > CReATE > Self-contained > Small Molecule > Soldiers > Wastewater > Wastewater System > Wing Box > emergency situation > environmental engineering > fixed-film process > fresh water > membrane bioreactor process > natural disaster > negative environmental impacts > off-base sources > potential health risks > solid waste
Dry landscapes can increase disease transmission
20.06.2018 | Forschungsverbund Berlin e.V.
100 % Organic Farming in Bhutan – a Realistic Target?
15.06.2018 | Humboldt-Universität zu Berlin
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
20.06.2018 | Materials Sciences
20.06.2018 | Materials Sciences
20.06.2018 | Materials Sciences