Experimental Studies of Natural Purification in Polluted Waters: IV. The Influence of the Plankton on the Biochemical Oxidation of Organic Matter

1931 ◽  
Vol 46 (8) ◽  
pp. 393 ◽  
Author(s):  
C. T. Butterfield ◽  
W. C. Purdy ◽  
E. J. Theriault
Keyword(s):  
Organic Matter ◽  
Experimental Studies ◽  
Biochemical Oxidation ◽  
Polluted Waters ◽  
Natural Purification

A four-year mass balance for a natural wetland system receiving domestic wastewater

1994 ◽  
Vol 30 (8) ◽  
pp. 235-244 ◽  
Author(s):  
M. Hosomi ◽  
A. Murakami ◽  
R. Sudo
Keyword(s):  
Organic Matter ◽  
Removal Rate ◽  
Domestic Wastewater ◽  
Residential Area ◽  
Flowing Water ◽  
Natural Wetland ◽  
N Release ◽  
Main Factors ◽  
Wetland System ◽  
Natural Purification

In order to clarify the natural purification potential of a natural wetland having free-flowing water, we performed a four-year study on such a wetland system which had been receiving for 12 years the domestic wastewater discharged from a residential area comprised of 45 households. The wetland's removal rate of organic matter throughout the four years ranged from 80% for COD to 95% for BOD, whereas the corresponding nitrogen removal rate was comparatively lower. Results indicate that NH4-N release from the bottom sediment and repression of nitrification are the main factors responsible for the wetland's low removal rate of nitrogen during winter. The wetland purification performance even in winter was determined as follows (g m−2 d−1): 2.2 BOD, 0.81 COD, 1.1 TOC, 0.10 T-N, and 0.023 T-P.

Sign in / Sign up

Export Citation Format

Share Document