Characteristics of the Coagulate Obtained during the Process of Model Wastewater Treatment

In the process of wastewater treatment by coagulation a large amount of sediment is being produced, which is the main drawback of this method. Therefore, the development of utilization or recirculation technology of the waste obtained, the research of the obtained by-products should be conducted. Within the scope of this work, the sediment, that is being formed during the coagulation of the model wastewater containing the wood originated pollutants, was studied. Using the aluminium-containing composition coagulant on a base of polyaluminium chloride, coagulates characterized by the low sludge volume index within 30 minutes (89 ml g-1), and the optimal time of sedimentation is 20-30 minutes. The coagulate particles have an average size of 45.8 μm. The derived coagulate is composed primarily of carbon (27.9%), oxygen (49.4%) and aluminum (10.9%). Carbon, oxygen and hydrogen belong to an organic part of coagulate-the wood pollutants, which, in turn, has a high content of hemicellulose. It is concluded that the existing hemicellulose in the obtained coagulate is characterized by O-acetyl-4-O-methyl-D-glucuron-β-D-xylan with β-(1-4)-glucomannose.

[1]  G. Shulga,et al.  Recovery of lignin and extractive substances from the hydrolysate of model birch wood hydrolysis with aluminium , 2016 .

[2]  Maris Puke,et al.  Wood Biomass from the Model Wastewater and Its Fractionation , 2015 .

[3]  M. Ahmaruzzaman,et al.  Industrial wastes as low-cost potential adsorbents for the treatment of wastewater laden with heavy metals. , 2011, Advances in colloid and interface science.

[4]  P. Fowler,et al.  Structural characterization and isolation of lignin and hemicelluloses from barley straw , 2011 .

[5]  Min-Shing Tsai,et al.  The characteristics of organic sludge/sawdust derived fuel. , 2011, Bioresource technology.

[6]  R. Sun,et al.  ISOLATION AND PHYSICO-CHEMICAL CHARACTERIZATION OF LIGNINS FROM ULTRASOUND IRRADIATED FAST-GROWING POPLAR WOOD , 2011 .

[7]  J. Kennedy,et al.  Fractional isolation and structural characterization of hemicelluloses from Caragana korshinskii , 2010 .

[8]  C. Abdelly,et al.  THE EFFECT OF COMPOST AND SEWAGE SLUDGE ON SOIL BIOLOGIC ACTIVITIES IN SALT AFFECTED SOIL , 2010 .

[9]  R. Sun,et al.  Preparation and characterization of carbamoylethyl hemicelluloses , 2009 .

[10]  C. Faur,et al.  Production of porous carbonaceous adsorbent from physical activation of sewage sludge: application to wastewater treatment. , 2006, Water science and technology : a journal of the International Association on Water Pollution Research.

[11]  M. Hamoda,et al.  Coagulant selection and sludge conditioning in a slaughterhouse wastewater treatment plant. , 2004, Bioresource technology.

[12]  R. Sun,et al.  Effect of ultrasound on the structural and physiochemical properties of organosolv soluble hemicelluloses from wheat straw. , 2002, Ultrasonics sonochemistry.

[13]  Deng-Fong Lin,et al.  USE OF SEWAGE SLUDGE ASH AS BRICK MATERIAL , 2001 .

[14]  G Thompson,et al.  The treatment of pulp and paper mill effluent: a review. , 2001, Bioresource technology.

[15]  Muhammad H. Al-Malack,et al.  Coagulation of polymeric wastewater discharged by a chemical factory , 1999 .

[16]  S. Duff,et al.  Coagulation and precipitation of a mechanical pulping effluent—I. Removal of carbon, colour and turbidity , 1996 .