Sewage sludge as conditioner for improving soils affected by sulfur dioxide
Continuous emission of SO/sub 2/ from the acid manufacturing plant at Ching Lung Tau, New Territorise of Honk Kong, damaged most of the surrounding vegetation, leaving only a few comparatively more resistant species, e.g. Eragrostis sp., Ischaemum aristatum, Smilax glabra, etc. Erosion occurred after heavy rainfall. Fine particles were washed away, leaving the non-fertile subsoil which lack nutrients. The utilization of sludge as a soil conditioner has been regarded as a method of sludge disposal which not only solves some of the pollution problems but receives benefit from the waste product. A considerable amount of literature has been concerned with improving infertile soil including the reclamation of spoiled land, e.g. coal mine spoils, iron-ore tailing. The present investigation attempts to study the effect of applying digested sewage sludge to eroded soil using laboratory soil columns and a green house trial.
- Research Organization:
- Chinese Univ. of Hong Kong, Shatin
- OSTI ID:
- 5213915
- Journal Information:
- Bull. Environ. Contam. Toxicol.; (United States), Vol. 23:6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SULFUR DIOXIDE
ENVIRONMENTAL EFFECTS
BIOLOGICAL EFFECTS
BIOLOGICAL WASTES
CHINA
EROSION
PLANTS
POLLUTION
RAIN
SEWAGE SLUDGE
SLUDGES
SOILS
SULFUR COMPOUNDS
TERRESTRIAL ECOSYSTEMS
WASTES
ASIA
ATMOSPHERIC PRECIPITATIONS
BIOLOGICAL MATERIALS
CHALCOGENIDES
ECOSYSTEMS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
SEWAGE
SULFUR OXIDES
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)
510301 - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- Soil- (-1987)