Coagulation of greywater from a small household
Authors:
- Andrzej Bielski,
- Andrzej Giermek
Abstract
The authors looked into developing a low cost technology for a treatment of greywater from a small household. The process of coagulation and oxidation with hydrogen peroxide, combined with ultra-violet radiation (H2O2 / UV), was investigated however, the article focuses only on coagulation and its effects. Since a highly concentrated greywater was used, doses of coagulant (poly-aluminium chloride) ranged from 12.5 to 200 g Al3+/m3. Coagulation with coagulant doses within the range of 25–100 g Al3+/m3 showed the best removal of turbidity, permanganate value (PV), chemical oxygen demand (COD) and total organic carbon (TOC). The lowest concentrations of residual aluminium (about 0.1 g Al3+/m3) were found during coagulation with the doses of 25–50 g Al3+/m3, while at the coagulant dose of 200 g Al3+/m3the residual aluminium concentration was 1.4 g Al3+/m3. The lowest turbidity (1 NTU) was observed at the doses of 50–100 g Al3+/m3 and the Zeta potential from –10 to +14 mV. At the doses below 50 g Al3+/m3or above 100 g Al3+/m3 the turbidity values were higher. The lowest concentration of residual alumin-ium corresponded to the Zeta potential from –10 to +14 mV. At the coagulant doses below 50 g Al3+/m3or above 100 g Al3+/m3 the turbidity values were higher. The lowest residual aluminium concentration corresponded to the Zeta potential from –14 to –10 mV. The study helped to develop a mathematical model for coagulation. The model showed that coagulation of greywater (COD = 1,200 g O2/m3 )at the coagulant dose of 100 g Al3+/m3 ensured about 63% process efficiency.
- Record ID
- CUT43f108324adb484082811281374f0b0b
- Publication categories
- ;
- Author
- Journal series
- Desalination and Water Treatment, ISSN 1944-3994, e-ISSN 1944-3986
- Issue year
- 2019
- Vol
- 151
- Pages
- 74-81
- Other elements of collation
- tab.; wykr.; Bibliografia (na s.) - 80-81; Bibliografia (liczba pozycji) - 35; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 151
- Keywords in English
- greywater, coagulation, zeta potential, model of coagulation, aluminium concentration, PV, COD, TOC
- DOI
- DOI:10.5004/dwt.2019.23807 Opening in a new tab
- URL
- http://www.deswater.com/vol.php?vol=151&oth=151|0|May%20|2019 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 100
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT43f108324adb484082811281374f0b0b/
- URN
urn:pkr-prod:CUT43f108324adb484082811281374f0b0b
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.