scholarly journals Plants, Shade and Solar Radiation Effect on Bio-Aerosol Pollution in Wastewater Treatment Plants

2020 ◽  
Vol 43 (4) ◽  
pp. 1-5
Author(s):  
Soliman aborawash ◽  
Muharram Abdu Allah El Din ◽  
Kamal Radwan ◽  
Huda El-Gamal
Keyword(s):  
Wastewater Treatment ◽  
Solar Radiation ◽  
Radiation Effect ◽  
Wastewater Treatment Plants ◽  
Aerosol Pollution

scholarly journals Radionuclide Transfer in the Zirconium Oxychloride Production Process and the Radiation Effect in a Typical Chinese Enterprise

2019 ◽  
Vol 11 (21) ◽  
pp. 5906
Author(s):  
Shoulong Xu ◽  
Qifan Wu ◽  
Xiaogang Li ◽  
Feng Yuan ◽  
Liangying Tu
Keyword(s):  
Wastewater Treatment ◽  
Production Process ◽  
Effective Dose ◽  
Radiation Effect ◽  
Wastewater Treatment Plants ◽  
Raw Materials ◽  
Zirconium Oxychloride ◽  
Manufacturing Enterprises ◽  
Study Results ◽  
Zircon Sand

The radiation impact on the environment from naturally-occurring radioactive materials in zircon sand is an important issue for zirconium product manufacturing enterprises. In this paper, a typical oxychloride production enterprise has been taken as an example to study the radiation effect and environmental pollution during the whole production process. The transfer and enrichment of radionuclides in zircon sand was studied by analyzing their concentrations in samples, such as products and wastes, which were sampled from every studied workshop, so that the dose rate in the environment and typical facility surfaces of each workshop could be measured. The study results show that the transfer and enrichment of radionuclides occur mainly in workshops of acidification, dissolution, concentration and crystallization. Silicon slag adsorbed some radionuclides, but most of the radionuclides in raw materials are transferred and enriched in waste acid by the concentration and crystallization process. Sludge and wastewater still contain a large quantity of radionuclides after treatment by wastewater treatment plants. This results in a significant increase in U-238 and Th-232 concentrations in river water near the main outlet. The average effective dose of all employees in the studied enterprises was 0.94 mSv, and workers from the wastewater treatment plants had the largest annual effective dose at 11 mSv.

Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Anaerobic Sludge ◽  
Biological Phosphorus Removal ◽  
The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

INTEGRATED ASSESSMENT OF WASTEWATER TREATMENT PLANTS FOR SUSTAINABLE RIVER BASIN MANAGEMENT

2010 ◽  
Vol 9 (9) ◽  
pp. 1251-1258 ◽  
Author(s):  
George Barjoveanu ◽  
Claudia Cojocariu ◽  
Brindusa Robu ◽  
Carmen Teodosiu
Keyword(s):  
Wastewater Treatment ◽  
River Basin ◽  
Integrated Assessment ◽  
Wastewater Treatment Plants ◽  
River Basin Management ◽  
Basin Management

OPTIMIZATION OF WASTEWATER TREATMENT PLANTS MONITORING IN FLOW VARIATION CONDITIONS DUE TO RAIN EVENTS

2016 ◽  
Vol 15 (9) ◽  
pp. 1981-1988 ◽  
Author(s):  
Carmine Fiorentino ◽  
Maurizio Luca Mancini ◽  
Luca Luccarini
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Flow Variation ◽  
Rain Events

APPLICATION OF ORGANIC FLOCCULANTS FOR THE TREATMENT OF SLUDGE FROM MUNICIPAL WASTEWATER TREATMENT PLANTS

2013 ◽  
Vol 12 (1) ◽  
pp. 163-166 ◽  
Author(s):  
Mariana Turcu ◽  
Valentin Nedeff ◽  
Narcis Barsan ◽  
Emilian Florin Mosnegutu ◽  
Mirela Panainte
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Municipal Wastewater Treatment ◽  
Municipal Wastewater Treatment Plants
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