Posts

Untreated wastewater and agriculture

Every year, a significant amount of water resources is spent on agriculture, which due to the limited freshwater resources and climate change, one of the proposed ways is wastewater treatment. This shortage of freshwater can be partially compensated by re-treatment of wastewater and use in the agricultural sector.
One of the main problems of using this method is improper treatment and the entry of untreated wastewater into the agricultural sector, which can pose many risks to human health. This paper describes the effects of untreated wastewater entering agricultural waters.

The World Health Organization has described some effects of sewage entering agricultural waters, including gastrointestinal and diarrheal diseases, viral diseases, hepatitis A, worm infections such as ascariasis, and anemia.
Another problem with untreated wastewater entering agricultural waters is that workers and farmers can be exposed to skin diseases due to frequent skin contact with this contaminated water. Also, the presence of heavy metals such as arsenic, cadmium, and lead can cause many health problems. For example, the accumulation of cadmium in the kidneys due to repeated contact with these contaminated waters can cause kidney disease and osteoporosis.

Due to the numerous problems of untreated wastewater entry into agricultural waters, the importance of the study, in this case, has been identified. Some countries in Southeast Asia, as well as sub-Saharan Africa, need to study more closely in this area due to the entry of industrial effluents into the sewage system because the treatment of different materials requires different technologies. One of the issues that different communities are always considering is that It is necessary to whether to do so, given the costs of wastewater treatment as well as the diseases caused by improper wastewater treatment and its entry into agricultural waters.

The answer to this question requires factors such as geographical location, method of using factory effluents, the volume of water resources, as well as the amount of water required for agricultural activities. Based on the mentioned factors and economic estimates, it can be concluded whether in each region, is it economical?

Finally, due to global warming and the scarcity of water resources, humans are forced to use different methods to compensate for the water needed in different sectors, but it should be noted that using treated wastewater for agricultural activities, must be done in principle to prevent acute problems related to human health.

Source: Dickin, S. K., Schuster-Wallace, C. J., Qadir, M., & Pizzacalla, K. (2016). A Review of Health Risks and Pathways for Exposure to Wastewater Use in Agriculture. Environmental health perspectives124(7), 900–909. https://doi.org/10.1289/ehp.1509995

Translator: Maryam Pasandidehnia

Lecture by Dr. Siavash Isazadeh on the application of advanced ozone oxidation process

Lecture by Dr. Siavash Isazadeh on “Application of advanced ozone oxidation process in wastewater treatment, improving the quality of effluent and reducing excess sludge” will be held on Saturday, August 4, 2018 at the Faculty of Civil and Environmental Engineering.

Dr. Siavash Isazadeh holds a Ph.D. in Civil Engineering from McGill University in Canada and, after a one-year course at McGill University in Canada (2015), is currently pursuing a postdoctoral fellowship at the Massachusetts Institute of Technology (MIT) School of Biological Engineering. So far, several articles of his academic research have been published in prestigious scientific journals. He is credited with patenting to increase the dissolution of gases in liquid liquids and to develop efficient reactors for the transport of ozone gas in water and wastewater treatment processes in the United States. Dr. Isazadeh became an honorary member of the Office of Sustainability of Amirkabir University of Technology in 2013.

His research interests are focused on the development of biological and chemical processes in water and wastewater treatment with emphasis on recycling valuable resources in wastewater and the reuse of municipal wastewater. In this regard, advanced genetic techniques and modeling of biological and chemical processes are always among his research tools which have been used in the last ten years.

For more information, read the poster of this lecture in the attached section.

  • Participation is open to the public by prior arrangement and registration.
  • Click here to register for the lecture. .
  • Registration for the in person participation is free.
  • This lecture is also covered virtually and live, which includes a payment of 10,000 Tomans.
  • Click here to pay for the virtual participation. Be sure to write down your Code of Payment after payment.
  • Time and place: Saturday, August 4, 2018 from 10:30 to 12:30, Amirkabir University of Technology, Building No. 1, Faculty of Civil and Environmental Engineering, Fourth Floor, Seminar Hall 2

Please be sure to fill out the registration form to participate in the lecture.

In case of any problem or question, write to sustainability.conf@aut.ac.ir and the number 09031645456 in Telegram.

Attachment: lecture_poster-dr._isazadeh