Coking plant wastewater treatment in integrated systems combining volume coagulation and advanced oxidation with pressure membrane techniques
Journal Title: Civil and Environmental Engineering Reports - Year 2011, Vol 1, Issue 7
Abstract
The article compares the efficiencies of coke plant wastewater treatment in the integrated systems that combine physicochemical and chemical purification methods with ultrafiltration and reverse osmosis. The wastewater treated came from the “Coke Plant Czestochowa New”. In the process of volume coagulation the coagulant used was sulfate (VI) iron (III)-PIX-113, with the dosage of 400 mg/dm3 and pH was 9. In the advanced oxidation Fenton's reagent was applied, with the concentration of iron equal to 0.8g/dm3 and hydrogen peroxide 2.4 g/dm3. Coke plant wastewater treatment after its initial purification was performed by means of ultrafiltration process with the use of a polysulfone membrane with 16% weight content of polysulfones in the film-forming solution and a 5-second time of solvent evaporation from the membrane surface. In spite of the fact that treated coke oven wastewater presented high values of pollution indicators, making it impossible to drain into the natural receiver or sewer, it was posttreated in the process of reverse osmosis using a nylon membrane (ADF), of an American company Osmonics. The article also presents an attempt of modelling of low-pressure membrane filtration efficiency based on the relaxation model assumptions.<br/><br/>
Authors and Affiliations
K. Mielczarek, J. Bohdziewicz, A. Kwarciak-Kozłowska
Revitalisation issues of settlements built in 1946 – 1974 in terms of social and demographic changes
The paper refers to the issues of forming the revitalisation programs of settlements in particular houses built in 1946-1974 in terms of the understanding of social – demographic changes which have been taking place in a...
SHAKEDOWN OF COMPOSITE FRAMES TAKING INTO ACCOUNT PLASTIC AND BRITTLE FRACTURE OF ELEMENTS
In the paper the mathematical model of the optimization problem of limit and shakedown analysis for composite plane frames, containing elastic-plastic and brittle elements under low-cyclic loading, is proposed. It is ass...
Modelling of thin periodic plates subjected to large deflections
The objects under consideration are thin linear-elastic plates with periodic structure in planes parallel to the plate midplane, subjected to large (of the order of plate thickness) deflections. The main aim is to propos...
COMPARISONS OF BUCKLING CAPACITY CURVES OF PRESSURIZED SPHERES WITH EDR PROVISIONS AND EXPERIMENTAL RESULTS
Existing provisions leading to the assessment of the buckling resistance of pressurised spherical shells were published in the European Design Recommendations (EDR) [1]. This book comprises rules which refer to the stabi...
HISTORICAL ALLOTMENT GARDENS IN WROCŁAW - THE NEED TO PROTECTION
Since about the mid-nineteenth century, together with the changing socio-economic situation, different types of allotments appeared in Wrocław. Initially, they were rented gardens, gardens for the poor or for factory wor...