ANDRITZ to supply new sludge
dewatering line to Norske Skog Halden, Norway
The anaerobic digestion of sludge
leads to the formation of struvite because ammonia, phosphate and magnesium are solubilised by the digestion process (Mamais et al.
In this case, the cakes resulted from filtering aerobic digested and returned activated sludges
were about 13% and 10.
Yet Severn Trent has defended the sludge
sales, which are backed by the Government.
It has been generally considered that the presence of metals in soil treated with sewage sludge
is confined to the cultivation zone with very little movement below that depth (e.
His research focuses on the analysis, sources, behavior, and effects of organic contaminants in effluents, sludges
, and the environment.
The use of sewage sludge
as fertilizer is back in the news as the City of Toronto proposes to turn its processed sewage into a soil amendment.
In testimony at the Lahontan Regional Water Quality Control Board's workshop on sludge
may be stabilized by anaerobic or aerobic digestion, or in some cases, economically destroyed by incineration or similar means.
Informal procedures for land application of sludges
were developed gradually from 1975 to 1985 by cooperating agencies (WVDNR and WVU CES).
Legislation which would prohibit the interstate transport of municipal sewage sludge
for use on agricultural lands (H.
CHAPTER 1: SLUDGE
SOURCES, QUANTITIES, AND MANAGEMENT CHAPTER 2: SLUDGE
CHARACTERISTICS CHAPTER 3: SLUDGE
STABILIZATION CHAPTER 4: SLUDGE
PUMPING AND CONVEYING CHAPTER 5: SLUDGE
THICKENING CHAPTER 6: SLUDGE
DEWATERING CHAPTER 7: SLUDGE
CONDITIONING CHAPTER 8: SLUDGE
DRYING AND COMBUSTION CHAPTER 9: CHEMICAL SLUDGES
CHAPTER 10: LAND DISPOSAL OF SLUDGE