Management of shock loads wastewater produced from water heaters industry
- 84 Downloads
Water heater manufacturing represents one sector of household electrical appliance industry. It includes several batch processes which resulted in a highly polluted wastewater as shock loads. The objective of this study was to manage the shock loads wastewater with a simple and cost-effective approach prior to final discharge into municipality. To achieve this objective, two approaches were studied. The first approach was the chemical treatment of the accumulated shock loads wastewater using alum and an anionic polymer. Although this approach produced a very high-quality effluent, it was economically and technically infeasible. The second approach was a controlled release of the shock loads to the normal daily discharge in a way that guarantees the compliance of the end-off-pipe with the National Regulatory Standards. This solution required establishment of an equalization tank for normal daily flow and a holding tank for controlled release of the shock loads. Mathematical calculations were carried out to determine the most violating parameters in order to calculate the mixing ratio the of shock loads with the normal daily flow. Full engineering design of the proposed solution was carried out. This approach was implemented and proved to be simple, easy to operate, cost-effective and can be replicated in similar batch processing manufacturing plants.
KeywordsWaste management Water heaters Chemical treatment Hazardous wastes Control release
The authors would like to thank Eng. Yaser Sherif, the Head manager of Environics Egypt Company for his financial support.
- Abo-Elela SI, Helaly FM (1990) Solid and cellular styrene-butadiene urea filled matrices in agriculture as a means of minimizing water pollution. Plast Rubber Process Appl 14(1):43–47Google Scholar
- APHA (2005) American public health association, standard methods for the examination of water and wastewater, 21st edn. United Book Press, Gwynn OakGoogle Scholar
- APHA (2015) American public health association, standard methods for the examination of water and wastewater, 23rd edn. United Book Press, Gwynn OakGoogle Scholar
- Code of Federal Regulation (40 CFR 425.01), title 40, part 425, section 01 (2003) Published by Office of Federal Register-National Archives and Records Administration, US government printing office, WashingtonGoogle Scholar
- Doma HS, El Kamah HM, Abou-Elela SI (2013) Assessment of using multistage rotating biological contactor versus chemical coagulation-precipitation for the treatment of agro-food-industrial wastewater. J Appl Sci Res 12:6498–6507Google Scholar
- MD44/2000 (2000) Ministerial decree No. 44 on the amendment of the implementing regulation of low No. 93/1962 for industrial wastewater discharge into public sewerage network, art. 14. Ministry of housing, utilities, and urban communities, EgyptGoogle Scholar
- Metcalf & Eddy (2003) Wastewater engineering: treatment and reuse, 4th edn. The McGraw-Hill Companies, Washington, p 1771Google Scholar
- Sahu OP, Chaudhari PK (2013) Review on chemical treatment of industrial waste water. J Appl Sci Environ Manag 17(2):241–257Google Scholar