Inhibition of trihalomethane formation in city water by radiation-ozone treatment and rapid composting of radiation disinfected sewage sludge

1985 ◽  
Vol 25 (1-3) ◽  
pp. 63-71 ◽  
Author(s):  
M. Takehisa ◽  
H. Arai ◽  
M. Arai ◽  
T. Miyata ◽  
A. Sakumoto ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Ozone Treatment ◽  
City Water

Ozone treatment of organic micro-pollutants in sewage sludge

2010 ◽  
Vol 61 (11) ◽  
pp. 2923-2930 ◽  
Author(s):  
J. Lahnsteiner ◽  
R. Vranitzky
Keyword(s):  
Sewage Sludge ◽  
Aromatic Hydrocarbons ◽  
Ultrasonic Treatment ◽  
Biogas Production ◽  
Endocrine Disrupting Compounds ◽  
Additional Benefit ◽  
Ozone Treatment ◽  
Endocrine Disrupting ◽  
Polycyclic Aromatic ◽  
Micro Pollutants

Organic micro-pollutants accumulate to a certain extent in sewage sludge and are therefore ecologically relevant if the sludge is to be reused in both agriculture and landscaping applications. This paper describes the degradation of endocrine-disrupting compounds and other micro-contaminants by means of ozone and ultrasonic treatment. One of the findings is that, as expected, aromatic compounds such as polycyclic aromatic hydrocarbons can be degraded easily by ozone. Thus it could be shown that, apart from enhanced VSS reduction and increased biogas production, sludge disintegration processes using ozone provide an additional benefit, i.e. the degradation of micro-pollutants, which is practically unattainable with ultrasonic treatment.

Pretreatment processes for the recycling and reuse of sewage sludge

2000 ◽  
Vol 42 (9) ◽  
pp. 167-174 ◽  
Author(s):  
J. A. Müller
Keyword(s):  
Energy Consumption ◽  
Sewage Sludge ◽  
Low Cost ◽  
Great Influence ◽  
Electrical Energy ◽  
Ozone Treatment ◽  
Nitrogen And Phosphorus ◽  
Mechanical Disintegration ◽  
Mechanical Methods ◽  
Reuse Options

This paper focuses on mechanical disintegration and will compare its results to thermal and ozone treatment. Several mechanical methods can be used for disintegration of sewage sludge. The methods differ in energy consumption and suitability of the machines for practical application, which is of great influence on the selection of the method. Thermal disintegration processes have a higher energy consumption than mechanical methods, but they can use low cost thermal energy instead of electrical energy. The highest solution of organic components is achieved using ozone treatment. Several reuse options of disintegrated sludge in aerobic and anaerobic processes are explained. An acceleration and enhancement of the anaerobic stabilisation process is observed, especially if excess sludge is used. Mechanical disintegration leads to better results than thermal treatment in the range of 60 to 130°C. For the aerobic process the substitution of external proton donors is of special interest. High denitrification rates can be achieved, if the sludge is adapted to the substrate. Increasing the concentration of nitrogen and phosphorus in the supernatant, in order to recycle these valuable compounds, mechanical disintegration and ozone treatment seem to be more suitable than thermal disintegration.

scholarly journals New Approach for Sewage Sludge Stabilization with Ozone

2020 ◽  
Vol 12 (3) ◽  
pp. 886
Author(s):  
Patryk Kosowski ◽  
Małgorzata Szostek ◽  
Rafał Pieniążek ◽  
Piotr Antos ◽  
Karol Skrobacz ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Ozone Treatment ◽  
New Approach ◽  
Sludge Stabilization ◽  
Physico Chemical ◽  
Colony Forming Units ◽  
Microbiological Parameters ◽  
Counter Current ◽  
Ozonation Process ◽  
Selection Of

Due to a variety of physicochemical properties of the sewage sludge the selection of proper methods for its stabilization is difficult. In this work, the effect of ozone treatment on physico-chemical and microbiological parameters of sludge was investigated. Ozonation was carried out using a counter-current bed reactor, which ensures optimal mass transfer and the contact time of ozone with excessive sediment. The ozonation process was carried out for 15, 30, 45 and 60 min at an ozone concentration of 90–110 ppm. As a result of the ozone treatment it was possible to reduce the number of colony forming units. Also the potential for dewatering of the sludge improved while the total solids of the sludge did not change. The values of COD and BOD5 increased with time of the process.

Magnetic bugs cut sewage sludge

Nature ◽  
2003 ◽  
Author(s):  
John Whitfield
Keyword(s):  
Sewage Sludge

A long-term chemical and infrared spectroscopy study on a soil amended with municipal sewage sludge

Agronomie ◽  
2001 ◽  
Vol 21 (2) ◽  
pp. 169-178 ◽  
Author(s):  
Giovanni Gigliotti ◽  
Pier Lodovico Giusquiani ◽  
Daniela Businelli
Keyword(s):  
Infrared Spectroscopy ◽  
Sewage Sludge ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Spectroscopy Study

Enhancing the power generation of Rhodopseudomonas palustris-based MFC

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1261-1268
Author(s):  
Shu Otani ◽  
Dang-Trang Nguyen ◽  
Kozo Taguchi
Keyword(s):  
Activated Carbon ◽  
Rhodopseudomonas Palustris ◽  
Ozone Treatment ◽  
Maximum Power Density ◽  
On Demand ◽  
Long Time ◽  
Dry Conditions ◽  
Carbon Sheet ◽  
Uv Ozone

In this study, a portable and disposable paper-based microbial fuel cell (MFC) was fabricated. The MFC was powered by Rhodopseudomonas palustris bacteria (R. palustris). An activated carbon sheet-based anode pre-loaded organic matter (starch) and R. palustris was used. By using starch in the anode, R. palustris-loaded on the anode could be preserved for a long time in dry conditions. The MFC could generate electricity on-demand activated by adding water to the anode. The activated carbon sheet anode was treated by UV-ozone treatment to remove impurities and to improve its hydrophilicity before being loaded with R. palustris. The developed MFC could generate the maximum power density of 0.9 μW/cm2 and could be preserved for long-term usage with little performance degradation (10% after four weeks).

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