Case Study For Soap Waste Water
Case Study For Soap Waste Water
Case Study For Soap Waste Water
Vol.03,Issue.10
May-2014,
Pages:2052-2057
www.semargroup.org,
www.ijsetr.com
Abstract: This study presents the wastewater treatment plant for soap industry. Soap industry generates relatively large
quantities of wastewater that may contain various potentially organic matters. Therefore, the proper management of industrial
wastewater is essential. The quality and quantity of wastewater from this industry are studied and the suitable method for
wastewater treatment system is considered. The wastewater from soap industry is collected for three times and analysed at the
laboratory of ISO TECH in Yangon (Myanmar). Physical, chemical and biological parameters of wastewater are measured.
Then, the results are compared into public sewer of Indian Standards. According to the experimental results, the concentrations
of pH, suspended solids, BOD, COD are higher than acceptable level of Indian Standards. The wastewater production from the
soap industry is 595000 l/day with the BOD content of 43000 mg/l and COD content of 99200 mg/l. Based on the test results
and wastewater discharge, there are two proposes of wastewater treatment plant in the study. The first propose is wastewater
treatment including neutralization basin, upflow anaerobic sludge blanket, alum dosing, flocculation, primary settling, activated
sludge process and final sedimentation tank. After passing the treatment plant, the effluent BOD, COD and suspended solids are
347 mg/l, 3456 mg/l and 430 mg/l. Alternatives propose includes screening, alum dosing, flocculation, primary sedimentation
tank, trickling filter, aeration tank and secondary sedimentation tank with effluent BOD (347 mg/l). The result values of two
methods are less than the acceptable BOD quality of 350 mg/l for discharging into public sewer.
Keywords: Industrial Wastewater, Soap Industry, Unit Operations and Processes, Wastewater Treatment.
I. INTRODUCTION
Wastewater or sewage is essentially the water supply of
the community after it has been fouled by a variety of uses.
Wastewater may be defined as a combination of the liquid or
water carried wastes removed from residences, institutions,
and commercial industrial establishments, together with such
groundwater, surface water, and stormwater as may be
present. The wastewater production from urban areas is about
evenly divided between industrial and municipal sources.
Therefore, the use of water by industry can significantly
affect the water quality of receiving waters. Soap industries
are the major sources of pollution in all environments. Based
on the type of industry, various levels of pollutants can be
discharged into the environment directly or indirectly through
public lines. Wastewater from industries includes employees
sanitary waste, process wastes from manufacturing, wash
waters and relatively uncontaminated water from heating and
cooling operations. Industries consumes huge amount of
fresh water, depleting a valuable resource required for
everyday human activities.
Figure1. Manufacturing Process of Soap Industry.
In addition, wastewater effluents loaded with pollutants
the amount of organic material in the water. If the industrial
often pose significant hazards to the environment. It is
wastewater is thrown away without any treatment, there will
therefore important to have high-performance and low-cost
be much pollution to the environment. Due to this condition,
wastewater treatment plants to treat and reuse industrial
treatment plant is essentially needed from the aspect of public
effluents. The strength of the wastewater is determined by
health. The objective of this study is to reduce wastewater
measuring the amount of suspended material in the water and
7. Neutralization
Many industrial wastes contain acidic or alkaline
materials that require neutralization prior to discharge to
receiving waters or prior to chemical or biological treatment.
For biological treatment, a pH in the biological system
should be maintained between 6.5 and 8.5 to ensure optimum
biological activity. The biological process itself provides a
neutralization and a buffer capacity as a result of the
production of CO2, which reacts with caustic and acidic
materials. The degree of preneutralization required depends,
therefore, on the ratio of BOD removed and the causticity or
acidity present in the waste.