This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Antibiotics are critical treatments for bacterial infections, but antibiotic resistance is a growing problem. Wastewater treatment plants may foster resistance development, since sewage contains both human pathogens and antibiotics or their metabolite. The activated sludge (AS) stage commonly used to treat sewage at these plants is especially microbe-rich and may encourage transfer of antibiotic resistance genes (ARGs) through reproduction (vertical transfer) or movement of mobile genetic elements (horizontal transfer). To learn more, a recent study profiled ARGs and their neighboring genes at five wastewater treatment plants on three continents. Overall, ARG abundance was lower in AS than in incoming sewage (IN). In addition, ARGs tended to colocalize with plasmids and other mobile genetic elements to a greater extent in IN than AS, indicating decreased horizontal transfer potential..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Students learn the fundamentals of using microbes to treat wastewater. They discover how wastewater is generated and its primary constituents. Microbial metabolism, enzymes and bioreactors are explored to fully understand the primary processes occurring within organisms.

Student teams design and then create small-size models of working filter systems to simulate multi-stage wastewater treatment plants. Drawing from assorted provided materials (gravel, pebbles, sand, activated charcoal, algae, coffee filters, cloth) and staying within a (hypothetical) budget, teams create filter systems within 2-liter plastic bottles to clean the teacher-made simulated wastewater (soap, oil, sand, fertilizer, coffee grounds, beads). They aim to remove the water contaminants while reclaiming the waste material as valuable resources. They design and build the filtering systems, redesigning for improvement, and then measuring and comparing results (across teams): reclaimed quantities, water quality tests, costs, experiences and best practices. They conduct common water quality tests (such as turbidity, pH, etc., as determined by the teacher) to check the water quality before and after treatment.

This course focuses on disseminating Water, Sanitation and Hygiene (WASH) or water/environment innovations in developing countries and underserved communities worldwide. It emphasizes core WASH and water/environment principles, culture-specific solutions, tools for start-ups, appropriate and sustainable technologies, behavior change, social marketing, building partnerships, and the theory and practice of innovation diffusion.

The course considers the growing popularity of sustainability and its implications for the practice of engineering, particularly for the built environment. Two particular methodologies are featured: life cycle assessment (LCA) and Leadership in Energy and Environmental Design (LEED). The fundamentals of each approach will be presented. Specific topics covered include water and wastewater management, energy use, material selection, and construction.

In Massachusetts, Manchester-by-the-Sea's wastewater treatment plant is located right on the coast. The town's water utility is working with the EPA's Climate Ready Water Utilities program to consider its adaptation options.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Managing wastewater is a major logistical puzzle that impacts the environment, the climate, and public health. While metropolitan wastewater typically undergoes complex processing and sanitation, rural livestock wastewater is often simply composted for fertilizer, but composting can release harmful contaminants like ammonia, CO₂, and methane. One way to still capture the nutrients with fewer harmful byproducts is by cultivating microalgae, which actually absorb CO₂ via photosynthesis rather than producing it. But how do microalgae impact pathogens? A recent pilot study using raw piggery wastewater found that microalgae cultivation dramatically reduced the pathogen load while also triggering a dramatic shift in the overall bacterial community composition. Further investigation using the most abundant pathogen, Oligella, found that the microalgae weren’t impacting Oligella directly. Rather, microalgae cultivation reduced Oligella abundance through a network of other bacterial species..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Students discover how tiny microscopic plants can remove nutrients from polluted water. They also learn how to engineer a system to remove pollutants faster and faster by changing the environment for the algae.

Students learn about the human water cycle, or how humans impact the water cycle by settling down in civilizations. Specifically, they learn how people obtain, use and dispose of water. Students also learn about shortages of treated, clean and safe water and learn about ways that engineers address this issue through water conservation and graywater recycling.

Learn about urban water services, focusing on conventional technologies for drinking water treatment. This course focuses on conventional technologies for drinking water treatment. Unit processes, involved in the treatment chain, are discussed as well as the physical, chemical and biological processes involved. The emphasis is on the effect of treatment on water quality and the dimensions of the unit processes in the treatment chain. After the course one should be able to recognise the process units, describe their function, and make basic calculations for a preliminary design of a drinking water treatment plant.

During this course, we will be exploring basic questions of architecture through several short design exercises. Working with many different media, students will discover the interrelationship of architecture and its related disciplines, such as structures, sustainability, architectural history and the visual arts. Each problem will focus on one of these disciplines and one exploration and presentation technique.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Wastewater treatment protects ecosystems from pollution, including dangerous heavy metal contaminants. Nitrogen and phosphorus can be removed from wastewater by denitrifying phosphorus removal sludge (DPRS). This artificial ecosystem contains many different microbes active in anaerobic, anoxic, and aerobic processes. However, heavy metal pollution can stop DPRS from reaching its full potential. So researchers examined DPRS microbiomes in response to Cr(VI), Ni(II), and Cd(II) contamination. Using metaproteomics, they found that different microbial groups adopted different resistance mechanisms. Nitrospira improved its oxygen utilization, and Nitrosomonas produced more enzymes under heavy metal stress. Phosphorus-accumulating bacteria also produced polyphosphate, which could support community-wide detoxification, and showed a variety of other resistance responses, illuminating different microbial responses to pollutants and how diversity within a community keeps it healthy..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Students design systems that use microbes to break down a water pollutant (in this case, sugar). They explore how temperature affects the rate of pollutant decomposition.

The Next Generation Science Standards (NGSS)* call for students to use the practices, concepts and content of science and engineering to understand phenomena and solve problems that are relevant to their lives. Starting from a student’s own experiences and community makes the science meaningful and increases engagement while helping students understand how global issues like climate change are present and addressable in their lives. In this series we examine how you can use the new science standards and your community to understand and address real world environmental problems and explore together how to integrate NGSS into your district’s classroom science units.Would you like to learn more about how urban water systems actually work? Are you curious how water systems, the impacts of climate change, and related conservation issues can interest your students and integrate with NGSS? Join us to learn about wastewater and stormwater systems (may include tours of facilities, depending on the site) and then workshop how you might use this content in your classroom. Appropriate for all 4th-12th grade teachers.

Students apply their understanding of the natural water cycle and the urban "stormwater" water cycle, as well as the processes involved in both cycles to hypothesize how the flow of water is affected by altering precipitation. Student groups consider different precipitation scenarios based on both intensity and duration. Once hypotheses and specific experimental steps are developed, students use both a natural water cycle model and an urban water cycle model to test their hypotheses. To conclude, students explain their results, tapping their knowledge of both cycles and the importance of using models to predict water flow in civil and environmental engineering designs. The natural water cycle model is made in advance by the teacher, using simple supplies; a minor adjustment to the model easily turns it into the urban water cycle model.

Through an overview of the components of the hydrologic cycle and the important roles they play in the design of engineered systems, students' awareness of the world's limited fresh water resources is heightened. The hydrologic cycle affects everyone and is the single most critical component to life on Earth. Students examine in detail the water cycle components and phase transitions, and then learn how water moves through the human-made urban environment. This urban "stormwater" water cycle is influenced by the pervasive existence of impervious surfaces that limit the amount of infiltration, resulting in high levels of stormwater runoff, limited groundwater replenishment and reduced groundwater flow. Students show their understanding of the process by writing a description of the path of a water droplet through the urban water cycle, from the droplet's point of view. The lesson lays the groundwork for rest of the unit, so students can begin to think about what they might do to modify the urban "stormwater" water cycle so that it functions more like the natural water cycle. A PowerPoint® presentation and handout are provided.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"For thousands of years, the Nile has provided bountiful gifts to the people who make their home around its banks, offering food, a means of transport, irrigation, and fertile soil. But there is a limit to how much the Nile can give. Already in the 1970s, Egypt began fully utilizing the available resources of the Nile. Any additional demand has been met virtually, through imports of food. Now, research suggests that within the next decade, Egypt is poised to import as much “virtual water” as it receives from the Nile. In a new study from MIT, researchers compiled water and crop data for Egypt spanning the past 60 years. That gave them one of the most detailed looks at modern water use ever produced for the country, and helped them understand Egypt’s trade in “virtual water”. Virtual water refers to the hidden flow of water in food and commodities. For example, it takes about 1100 tons of water to produce one ton of maize in Egypt..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

In this presentation, we will discuss how saltwater intrusion affects small islands freshwater supplies, and how tourism is a significant part of this. In Zanzibar fresh water for drinking and other purposes come from rain that replenishes the island’s groundwater reservoir and in many cases freshwater is a scarce resource. On top of this, the excessive pumping in groundwater for the tourist industry increases the risk of salt water seeping into the freshwater magazine from the sea, thereby destroying the freshwater resource.

In this presentation we will discuss how tourism affects the daily water use in Zanzibar and how a significant water consumption, has the potential of undermining the sustainability of the tourist sector in Zanzibar. Zanzibar has a great water disparity with 15 times higher daily water use per tourist compared with local residents.

In this presentation, we will discuss what happens to low-income countries like Zanzibar, when tourists arrive and continue their western lifestyle in a tropical setting with scare resources. We will among other focus on the wastewater generated, the consequences of water use and the tons of solid waste generated by the tourists.