Sludge management of small water and wastewater treatment plants

2004 ◽  
Vol 48 (11-12) ◽  
pp. 33-41 ◽  
Author(s):  
O. Nowak ◽  
V. Kuehn ◽  
M. Zessner
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Wastewater Treatment Plants ◽  
Advanced Treatment ◽  
Economic Pressure ◽  
Water And Wastewater Treatment ◽  
Sludge Treatment ◽  
Small Water ◽  
Water Treatment Plants ◽  
Water And Wastewater

“Disposal or reuse?” is the big question in respect to sewage and water sludges. This question is even more decisive for small plants, because the achievement of the advanced treatment necessary for disposal is much more difficult in small units than in big ones. The paper discusses this question with main focus on small WWTPs and gives a short overview of the specifics of sludge treatment in small units as well as of outlets for sludge from water treatment plants. In general, small WWTPs do not have a better sludge quality than larger ones, but the economic pressure to realise reuse is higher on them than on large plants.

scholarly journals Overview of radiotracer experiments for better understanding of wastewater and water treatment plants in Lima (Perú)

2018 ◽  
Vol 13 (13) ◽  
pp. 85-92
Author(s):  
Carlos Sebastián Calvo
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Wastewater Treatment Plants ◽  
Flow Behavior ◽  
Experimental Results ◽  
Water And Wastewater Treatment ◽  
Water Treatment Plants ◽  
Water And Wastewater ◽  
Different Levels

The objectives of this paper are to present an overview of possible applications of the radiotracers for better understanding of water and wastewater treatment plants. Numerous experiments have been carried out in different plants located in Lima. Four processes have been investigated: desanders, flocculators, clarifiers and digesters. Depending on the studied process, the experimental results have been interpreted at different levels of complexity: from simple troubleshooting to the modeling of the flow behavior inside the process.

scholarly journals ULTRAVIOLET DISINFECTION AS AN ELEMENT OF MULTI-BARRIER APPROACH TO THE WATER TREATMENT FOR THE PROTECTION AGAINST CHLORINE-RESISTANT PATHOGENS

2019 ◽  
Vol 96 (6) ◽  
pp. 531-535
Author(s):  
Z. I. Zholdakova ◽  
E. A. Tulskaya ◽  
S. V. Kostuchenko ◽  
Andrey A. Tkachev
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Wastewater Treatment Plants ◽  
Uv Disinfection ◽  
Ultraviolet Disinfection ◽  
Water And Wastewater Treatment ◽  
Large Cities ◽  
Disinfection Methods ◽  
Wide Range ◽  
Water And Wastewater

Ultraviolet disinfection is the most efficient mode in combination with other disinfection methods within multi-barrier approach for the water treatment. UV disinfection being effective against a wide range of pathogens including the chlorine-resistant (viruses and protozoa) significantly reduces chlorine byproducts. This paper presents a review of results of the implementation of multi-barrier lay-out with the application of UV disinfection at water and wastewater treatment plants of large cities: St. Petersburg and Nizhniy Novgorod.

Pharmaceuticals and Personal Care Products and their effects on humans

2018 ◽  
Author(s):  
Alex Neumann
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Wastewater Treatment Plants ◽  
Personal Care Products ◽  
Breast Development ◽  
Current Evidence ◽  
Human Consumption ◽  
Personal Care ◽  
Water Treatment Plants ◽  
Bodies Of Water

The increased use of Pharmaceuticals and Personal Care Products (PPCP’s) has led to an increase in many population health problems. In 1997, 15–50 % of women had developed breasts by the age of 8. Ten years prior to this, breast development by the age of 8 was uncommon. There are certain researchers who believe that this may be linked to the pharmaceuticals humans are consuming.Wastewater treatment plants are a significant gateway by which pharmaceuticals enter the water supply. Many pharmaceuticals find themselves in wastewater treatment plants, however the plants do not target these specific chemicals for treatment. As a result, they are released into the surrounding bodies of water, and accumulate in aquatic animals. When water treatment plants take water from the bodies of water and distribute it for human consumption, humans consume these chemicals.Many techniques for removing the pharmaceuticals have been tested, but there is still much uncertainty as to which are effective methods. The potential hazards associated with these chemicals are still uncertain, but the current evidence is indicating that it is very likely that these chemicals can be very hazardous.

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