Open AccessOrganic and nutrient removal from pulp and paper industry wastewater by extended aeration activated sludge system
Author(s) -
Ahmad Hussaini Jagaba,
S. R. M. Kutty,
M. A. H. M. Fauzi,
M.A.A. Razali,
MhdAmmar Hafiz,
Azmatullah Noor
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/842/1/012021
Subject(s) - wastewater , effluent , clarifier , activated sludge , chemical oxygen demand , mixed liquor suspended solids , pulp and paper industry , aeration , biochemical oxygen demand , aerated lagoon , environmental science , industrial wastewater treatment , pulp (tooth) , sewage treatment , suspended solids , wastewater quality indicators , waste management , total suspended solids , environmental engineering , engineering , medicine , pathology
Pulp and paper industries are critical to a country’s economic growth. The type of raw material used and the pulping process determine the quality and quantity of wastewater generated. However, the generated wastewater with a dark colour comprises a high concentration of suspended solids, organic content, chemical oxygen demand (COD), volatile organic compounds, and a variety of other impurities. Therefore, in this study, a bench scale activated sludge treatment system was set up using a reactor consisting of an aeration tank with 5000 mg/L initial biomass and a clarifier chamber for the biomass to settle. The reactor was run few weeks with real domestic wastewater as the influent for 3 weeks to acclimatize the sludge inside the reactor. The reactor was then fed with the influent mixture of 20% industrial pulp wastewater and 80% domestic wastewater. Organic and nutrient parameter concentrations are tested from the influent and effluent sample throughout the study duration and recorded for data analysis. The removal of COD and TSS are at 83% and 90% respectively while the averaged BOD value of the treated wastewater is at 74.6%. The conclusion of this project is that the bench scale EAAS is able to treat BOD and TSS according to standard. However, a modification may be required to increase the efficiency of removing COD to meet the requirement standards. This modification could be either by using a biocarrier or an activated carbon to further enhance the treatment efficiency even at higher wastewater concentration.