Contract award: handling of sewage sludge
from wastewater treatment plants in kE[sup.
Phosphate content in digested Fe-dosed sludge
liquor decreased by 80% for both Fe-dosed sludges
compared to phosporus content in fed sludge
7, when using chitosan, the cakes resulted from aerobic digested and returned activated sludges
were about 13% and 10.
The treated human sewage, known as sludge
, is being used on celds to grow crops including maize, corn and oats.
Centriquip is helping industry to protect the environment with its new mobile dewatering centrifuges that bring sludge
disposal technology right where it's needed.
Proportions (%) of metals present in nominal fractions (McLaren and Clucas 2001) in spiked and unspiked sludges Sludge
Soluble and Specific- Oxide Organic Residual exchange- ally bound and able sorbed sulfide bound Cd Spiked 18.
For example, recent work in the United States suggests that environmental levels of some EDCs are at least an order of magnitude greater in sewage sludges
here than in Europe.
A review of the literature suggests that, in terms of risk, significant concentrations of human pathogens could be expected in sludges
applied to agricultural land.
N-Viro has also recently filed applications for patents to cover a stabilization process and product technology for treating bio-organic sludges
such as pharmaceutical fermentation wastes, industrial microbial wastes, paper mill sludges
and similar materials.
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 AS BIOSOLIDS
to be dewatered consists of a mixture of fibrous and biological sludges
, as well as chemical sludges
from the mill s CTMP line.