Treatment of Waste Water from Coke Production Feasibility Study of Huaxi Jiohua Ltd, Wuhai,
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
China is the most populous country in the world and has an increasing economy. A growingeconomy enhances the electricity requirement, product demands and so on, which affects both the surrounding environment but also the global environment.Wuhai is an industrial city and the most polluted city in Inner Mongolia, China. Numerous amounts of the industries are lacking in the emission treatment and the PM10 is more then 10 times the allowed amount of European Union.This master thesis is a part of a bigger project, a corporation between IVL Swedish Environmental Research Institute Ltd and Environmental Protection Bureau in Wuhai.The Coke Company Huaxi Jiohua Ltd. was founded 1992, and has a producing capability of300.000 tons coke per year. The treatment station is a model of an ASP, without a sludge recycling and a sludge thickener instead of sedimentation basin. The treatment efficiency is failing in phenol removal.The aim of this thesis is to perform a feasible study of the wastewater treatment methods foran improvement of the separation of pollutions in coke wastewater and to give a proposal forimprovement of energy efficiency from wastewater treatment.Treatment efficiency of methods such as A2/O, A/O, SBR, and ASP was taken inconsideration.Due to the lack of basic treatment, a first suggestion is to optimize the biological parameters,and introduce sludge recycling to the system together with either a following sedimentationpool or a MBBR as a pre-treatment step.To gain energy from the wastewater treatment station, a replacing of the current aerator system in the aeration unit to fine bubble diffusers and introduce a heat exchanger in the cooling of gas step could be done.
Place, publisher, year, edition, pages
2007. , 74 p.
Trita-IM, ISSN 1402-7615 ; 2007:41
Social Sciences Interdisciplinary
IdentifiersURN: urn:nbn:se:kth:diva-32775OAI: oai:DiVA.org:kth-32775DiVA: diva2:411855