Journal
WATER ENVIRONMENT RESEARCH
Volume 87, Issue 2, Pages 123-131Publisher
WATER ENVIRONMENT FEDERATION
DOI: 10.2175/106143014X14062131179230
Keywords
urban wastewater; heavy metals; stormwater quality; dry weather flow; wet weather flow; total suspended solids; wastewater collection system
Funding
- Ministry of Education, Youth and Sport of the Czech Republic OpVaVpi ENET [CZ.1.05/2.1.00/03.0069]
- Operational Programme Education for Competitiveness [CZ.1.07/2.3.00/30.0055]
- European Social Fund
- state budget of the Czech Republic
Ask authors/readers for more resources
In combined wastewater collection systems, the concentrations of metals and the form of metal occurrence (dissolved form and bonding of metals to total suspended solids) influence the efficiency of capturing metals into sludge in wastewater treatment plants. The variability of metal concentrations was determined for 12 sampling sites during dry weather periods (DWP) and wet weather periods (WWP). Wastewater during DWP contain in dissolved form 77% of cadmium, 75% of nickel, 66% of arsenic, 57% of manganese and 50% of zinc and copper. Other metals are preferably bound to suspended particulates: 65% of chromium, iron, vanadium, mercury and 91% of lead. Comparison of metal concentrations in wastewater during DWP and WWP can be used to determine non-point source contributions. During WWP, metal concentrations increase by 24 to 25% for cadmium and zinc, 22% for nickel and 18% for copper. Urine and feces are responsible for a very small portion (<15%) of the total content of metals. Households are the main source of cadmium and copper (64% of total concentrations of these metals in wastewater).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available