Dersleri yüzünden oldukça stresli bir ruh haline sikiş hikayeleri bürünüp özel matematik dersinden önce rahatlayabilmek için amatör pornolar kendisini yatak odasına kapatan genç adam telefonundan porno resimleri açtığı porno filmini keyifle seyir ederek yatağını mobil porno okşar ruh dinlendirici olduğunu iddia ettikleri özel sex resim bir masaj salonunda çalışan genç masör hem sağlık hem de huzur sikiş için gelip masaj yaptıracak olan kadını gördüğünde porn nutku tutulur tüm gün boyu seksi lezbiyenleri sikiş dikizleyerek onları en savunmasız anlarında fotoğraflayan azılı erkek lavaboya geçerek fotoğraflara bakıp koca yarağını keyifle okşamaya başlar


Radon 222 At Ground Water Treatment Plant | 17576

Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Radon 222 at ground water treatment plant

3rd International Conference and Exhibition on Occupational Health & Safety

Eduard Hanslik

Keynote: Occup Med Health Aff

DOI: 10.4172/2329-6879.S1.017

Quality of ground water, which is often used as raw water for drinking, can vary in a wide range. In the case of high natural radionuclides content, especially content of radium 226 and radium 228, the most often used process of their removing is aeration followed by the filtration on gravity or pressure filters filled with sand covered with iron and manganic oxide, eventually with other medium as Birm or Greensand. These procedures had been used for the water treatment before the radioactive substances content in water and their ingestion risk were known. During the water treatment process, the radioisotopes of radium 226 and radium 228 are retained in the filter media together with iron and manganese. Retained radium 226 generates its daughter radionuclide- gaseous radon 222. During the filters washing, radon 222 is released into the air of the water treatment plant hall. This will be shown on an example, when the radon 222 concentration in raw ground water is low but it gets into the treated water during the treatment process. When the filters are being washed, the radon 222 concentration in the air of the plant significantly increases. The dependence of radon concentration in the air on the radium 226 activity in the sand of the particular filters was assessed. The inhalation dose rates due to radon 222 for the operating personnel were evaluated.

Eduard Hansl?k has completed his PhD at Technical University, Prague in 1980, his topic for thesis was ?Radon 222 in water its properties and removal?. Since 1983, he has been a head of Radio Ecological Department in T. G. Masaryk Water Research Institute, P.R.I. and leader of research project and studies. He has published his work in reputed journals. He is the scientific guarantee of conference Radionuclides in water management (1978-2014) and Radiological methods (2003-2013). Further, he is a member of commission for doctoral degrees Charles University Prague and he participates in development of Czech Standards for Determination of Radionuclides in Water as a co-author.

Relevant Topics