scholarly journals Physico-chemical Properties and Possible Applications of Sewage Sludge Combustion Ash

2021 ◽  
Author(s):  
Andrey Panferov ◽  
Grigory Ivakhniuk ◽  
Alexandr Garabadzhiu
Keyword(s):  
Sewage Sludge ◽  
Water Demand ◽  
Oil Spills ◽  
Chemical Properties ◽  
Domestic Wastewater ◽  
Saint Petersburg ◽  
Fine Grained ◽  
Physico Chemical ◽  
Safe State ◽  
Water Disposal

The main problems and prospects of water disposal systems of such a megalopolis as Saint Petersburg are considered. Methods for processing sewage sludge to an ecologically safe state, as well as the use of sludge combustion ash at the Central Aeration Station (CAS) in Saint Petersburg are proposed. Special attention was paid to the issues of sludge management in the sewage system of domestic wastewater. The possibility of using ash for extinguishing and eliminating oil spills at the CAS was confirmed experimentally in comparison with similar capabilities of marshalite and fine-grained construction sand. A method for preparing dry building mixes based on Portland cement for obtaining low-water demand construction binders was proposed.

Impact of urban sewage sludge on soil physico‐chemical properties and phytotoxicity as influenced by soil texture and reuse conditions

2020 ◽  
Vol 49 (4) ◽  
pp. 973-986
Author(s):  
Sarra Hechmi ◽  
Helmi Hamdi ◽  
Sonia Mokni‐Tlili ◽  
Manel Ghorbel ◽  
Mohamed Naceur Khelil ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Soil Texture ◽  
Chemical Properties ◽  
Urban Sewage ◽  
Physico Chemical ◽  
Urban Sewage Sludge

Effects of sewage sludge application on salinity and physico‐chemical properties of a calcareous soil

2000 ◽  
Vol 45 (1) ◽  
pp. 51-56 ◽  
Author(s):  
A. Perez‐Espinosa ◽  
J. Moreno‐Caselles ◽  
R. Moral ◽  
M. D. Perez‐Murcia ◽  
I. Gomez
Keyword(s):  
Sewage Sludge ◽  
Calcareous Soil ◽  
Chemical Properties ◽  
Physico Chemical ◽  
Sludge Application

scholarly journals Impact of Irrigation with Treated Domestic Wastewater on Squash (Cucurbita pepo L.) Fruit and Seed under Semi-Arid Conditions

Horticulturae ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. 226
Author(s):  
Ibrahim M. Makhadmeh ◽  
Seba F. Gharaiebeh ◽  
Ammar A. Albalasmeh
Keyword(s):  
Heavy Metals ◽  
Crude Protein ◽  
Seed Quality ◽  
Growth Parameters ◽  
Chemical Properties ◽  
Domestic Wastewater ◽  
Treated Wastewater ◽  
Seed Composition ◽  
Physico Chemical

The present study investigated the effect of using municipal treated wastewater in irrigation on plant growth and seed quality of squash as compared to fresh water. The physico-chemical properties of both water sources were investigated. Soil, fruits and seeds were tested for heavy metals presence and accumulation. A number of seed composition parameters were also measured. Growth parameters (fruit length, diameter and oven-dried weight) were increased in response to irrigation with treated wastewater as compared to control. All tested heavy metals concentrations were below the toxic limit of the Jordanian standards. Crude protein content was highest (41.28%) in naked seeds under treated wastewater treatment, whereas the lowest content (33.57%) was under freshwater treatment of the whole seeds.

Secondary Use of Sewage Sludge, Research on Its Morphology and Physical and Chemical Properties

2021 ◽  
Vol 25 (8) ◽  
pp. 14-20
Author(s):  
A.S. Mezhevova ◽  
Yu.V. Berestneva ◽  
A.M. Pugacheva
Keyword(s):  
Sewage Sludge ◽  
Organic Fertilizer ◽  
Chemical Properties ◽  
Wastewater Sludge ◽  
X Ray ◽  
Secondary Use ◽  
Physico Chemical ◽  
Scanning Electron Microscope Investigation ◽  
Physical And Chemical ◽  
And Chemical Properties

The findings of comprehensive studies on morphology, physico-chemical properties of sewage sludge, as well as practicalities of its application have been introduced. The sewage sludge used for the research came from the purification facilities of Volzhsky after the preliminary treated by the enzymatic-cavitation method. The morphology and structure of the processed sewage sludge have been determined by scanning electron microscope investigation and X-ray phase analysis. The chemical composition of the processed wastewater sludge have been and tested as an organic fertilizer in the cultivation of the false saffron.

scholarly journals Solid State Culture Conditions for Composting Sewage Sludge

1970 ◽  
Vol 6 (1) ◽  
Author(s):  
N.A. Kabbashi ◽  
A. Fakhru’l-Razi ◽  
K.B. Ramachandran
Keyword(s):  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Domestic Wastewater ◽  
Organic Matrix ◽  
Dry Weight ◽  
Culture Conditions ◽  
Physico Chemical ◽  
Chemical Conditions ◽  
Hazardous Pollutants ◽  
Horizontal Drum

Composting is applied to treat sewage sludge from treatment plants to enhance its quality and suitability for agricultural use. In this work the optimal conditions for composting sewage sludge from domestic wastewater treatment plants in a horizontal drum bioreactor (HDB) were investigated. This study investigated the physico-chemical conditions affecting the use of filamentous fungi in composting. The average number of faecal coliforms was 2.3 ï‚´ 107 bacteria/g waste dry weight at the beginning of the composting process, and decreased considerably to 8.2 ï‚´ 103, 8.1 ï‚´ 103, 8.5 ï‚´ 103, 8.0 ï‚´ 103,and 8.4 ï‚´ 103 bacteria/g, respectively for experiments T1 to T5. This decrease was presumably the result of raising temperature. The phase of hygienisation was marked by a very significant decrease in the number of E. coli cells (1.8 ï‚´ 107, to 3.7 ï‚´ 103, 3.8 ï‚´ 103, 3.3 ï‚´ 103, 3.2 ï‚´ 103, and 3.6 ï‚´ 103 bacteria/g) for T1 to T5 experiments, respectively: A second aspect was the investigation of a possible reduction of hazardous pollutants.  The highest concentration was for Fe and the lowest for Pb, showing that Fe is the most loosely bound to the sewage sludge organic matrix and Pb the most strongly bound, the Cd reduction by composting was more than 50%.Keywords: Sewage sludge, compost, horizontal drum bioreactor, hazardous.

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