Rosemount Watershed Study on Land Application of Municipal Sewage Sludge

To reuse municipal sewage sludge safely, experiment was carried out on grapefruit trees fertilized with composted sludge from Shiweitou Sewage Treatment Plant in Xiamen City of China, and a method was introduced of how to assess the environmental quality of grapefruit trees soil fertilized with sludge by Set Pair Analysis (SPA) model. The results showed that the soil in the surface layer (0-15cm) and the deeper layer (15-30cm) was less clean, and the environment of soil was not polluted. Thus it was feasible to use sludge as fruit fertilizer. The maximum service life of sludge for continuous land application was estimated by taking Cd as the limiting factor, which would provide scientific guide and technical support for safe land application of sludge.

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Effects of Land Application of Municipal Sewage Sludge on Growth, Physiology and Accumulation of Heavy Metals in Wheat (Triticum aestivum L.)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.878.647 ◽

2014 ◽

Vol 878 ◽

pp. 647-656 ◽

Cited By ~ 2

Author(s):

Liang Dai ◽

Biao Lin Peng ◽

Bi Gui Wei ◽

Gui Ma

Keyword(s):

Heavy Metals ◽

Sewage Sludge ◽

Dry Weight ◽

Land Application ◽

Municipal Sewage ◽

Municipal Sewage Sludge ◽

Technical Solution ◽

Good Growth ◽

Growth Physiology ◽

Sludge Application

The application of sewage sludge on agricultural soils is a promising technical solution. Pot experiments were performed to study the effect of sewage sludge application on growth, physiology and accumulation of heavy metals in three kinds of wheat. The experimental results showed soil pH decreased significantly with the increase of the application of sewage sludge. The contents of Cu, Zn and Pb in the mixed soil did not exceed the Environmental quality standards for soils in China for Grade II (GB-1518-1995).Wheat obtained good growth activities after the application of sewage sludge, however, high land application of sewage sludge (the ratio of sludge in the mixed soil of dry weight was 20% and 25%) inhibited seed emergence and root length. The content of total chlorophyll in wheat increased with the increase of sewage sludge application first and reached a maximum, and then decreased with a further increase of sewage sludge. Compared with the control, the a/b value in chlorophyll showed trace change. The content of proline in wheat increased with the increase of sewage sludge in low doses of sewage sludge (5%, 10% and 15%), while there was no significant increase in the content in high land application of sewage sludge. The physiological metabolism of wheat will exhibit abnormality as the stress of pollutants from sludge exceeded the tolerance of wheat. The content of three kinds of heavy metals in wheat grain increased obviously with sludge application increasing, indicating an increasing trend, and had the phenomenon of exceeded the safety qualification of non-environmental pollution food in china at high doses of sewage sludge. Taking account of the effects of sewage sludge application on growth,physiology and accumulation of heavy metals in wheat, the doses of sludge in the mixed soil of dry weight should be lower than 15%.

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Utilization of Risk Assessment in Development of Limits for Land Application of Municipal Sewage Sludge

Sewage Sludge: Land Utilization and the Environment ◽

10.2134/1994.sewagesludge.c9 ◽

2015 ◽

pp. 55-65 ◽

Cited By ~ 1

Author(s):

James A. Ryan

Keyword(s):

Risk Assessment ◽

Sewage Sludge ◽

Land Application ◽

Municipal Sewage ◽

Municipal Sewage Sludge

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Potential for Municipal Sewage Sludge Application on Agricultural Lands in Southern Quebec

Water Quality Research Journal ◽

10.2166/wqrj.1999.022 ◽

1999 ◽

Vol 34 (3) ◽

pp. 469-480 ◽

Cited By ~ 6

Author(s):

L Vasseur ◽

W Shipley ◽

C Ansseau

Keyword(s):

Sewage Sludge ◽

Agricultural Land ◽

System Modeling ◽

Land Application ◽

Geographical Information ◽

Municipal Sewage ◽

Municipal Sewage Sludge ◽

Agricultural Lands ◽

Data Set ◽

Sludge Application

Abstract In the present study, sludge composition from 112 municipalities in southern Quebec, Canada, were studied in order to examine the potential of alternative, environmentally sound sludge disposal, such as land application. Twenty-four municipalities with complete data set produced 24,000 dry tons of sludge per year. Of this amount, 47% (11,000 dry tons) could potentially be used for agricultural land application, according to Quebec standards. The other municipalities could not use their sludge for agricultural land application because of heavy metal contamination. The available areas of agricultural lands in southern Quebec are limited to about 149,454 ha. Considering that only 15% of this surface is adequate for sludge application and that a large part is already applied with manure, only 86,683 ha could be used for sludge application. Geographical Information System modeling in a smaller portion of this region showed that another 38% of land must be removed for other reasons, e.g., buffer zones around water bodies and roads. This left a surface area of approximately 54,000 ha or 5.4% of all agricultural land available for sewage sludge application in this region. Land application of sewage sludge may be possible but not without some limitations in some regions of southern Quebec. Other factors, such as pathogens contamination, climatic constraints and economic costs for the transportation and storage of sludge, must also be considered.

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Reclamation of phosphogypsum deposition site in Wislinka near Gdansk with municipal sewage sludge

Linnaeus Eco-Tech ◽

10.15626/eco-tech.2003.015 ◽

2019 ◽

pp. 115-124

Author(s):

Piotr Kowalik ◽

Ewa Wojciechowska

Keyword(s):

Sewage Sludge ◽

Municipal Wastewater ◽

Treatment Plant ◽

Land Application ◽

Municipal Sewage ◽

Municipal Sewage Sludge ◽

Municipal Wastewater Treatment ◽

High Concentration ◽

Enteric Parasites ◽

Post Industrial

Utilization of sewage sludge is becoming one of the biggest environmental problems.One of the possible solutions is application of sludge to soil amendment. Sludge is a goodnatural fertilizer due to high concentration of organic carbon and nutrient elements (N, P).On the contrary, sewage sludge also contains heavy metals and may be contaminatedwith enteric parasites. Thus application of sludge to land could result in contamination ofsurface and ground waters and including trace metals in the food chains due tocontamination of plants grown on sludge amended soils. Hence land application of sludgeought to be carefully monitored and follow stringent regulations, which are often difficultto fulfil. However, if sludge is applied to reclamation of degraded post-industrial lands,waste deposition sites, landfills and formation of soil-like surface layer on soil-lessgrounds, the restrictions are not so stringent and easier to fulfil than in cases when cropsare grown on sludge amended soils.In the article reclamation of a phosphogypsum deposition site in Wislinka near Gdanskusing sewage sludge from a municipal wastewater treatment plant (WWTP) is discussed.Phosphogypsum deposit in Wislinka for many years has been one of the biggestenvironmental problems of the region, causing permanent complainants from localcommunities. Reclamation of the deposition site started in 1999 and has been continuedup till now. Covering of the slopes with a layer of sludge reduces dangerous wind erosionof dust and promotes plants succession.

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