The coagulation properties of cellulose-NaOH/thiourea/urea/H2O solutions under various coagulation conditions have been investigated, to determine the kinetics of this special coagulation process (known as including diffusion on the contact surfaces of the polymer solution with the precipitant and the chemical reaction between acid and alkali). The observation was made that, at the beginning of...

a general overview on the prospective of various oxidation and combined processes in the treatment of tannery industry effluent are reported. various oxidation and combined processes such as uv/h2o2/hypochlorites, fenton and electro-oxidation, photo-chemical, photo-catalytic, electro-catalytic oxidation, wet air oxidation, ozonation, biological followed by ozone/uv/ h2o2, coagulation or ele...

Abstract Wastewater issues became a complex challenge in the world. There are several methods wastewater treatment, such as chemical, physical, biological, and combination of each method. However, process has advantages disadvantages. The physicochemical common used adsorption coagulation. Adsorption coagulation excellent to remove pollutants. is greatly influenced by pH, adsorbent dose, temper...

background: olive oil wastewater  contains chemical contents and organic materials that are resistant to biodegradation.  the existence of phenolic inhibitor compounds, toxicity to microorganisms in wastewater treatment units, unpleasant odor, high biochemical oxygen demand (bod) and chemical oxygen demand (cod), high suspended solids, and compounds resistant to biodegradation in such wastewate...

The chemical coagulation methods have been using successfully for treatment of textile wastewaters which have high color, COD and TOC contents. The coagulants have adsorption capability and constitute hydroxide compounds with dissolved substances in colored wastewaters.The greatest advantage of the coagulation method is to decrease further COD values than the other methods. The disadvantages of...

the efficiency of existing municipal wastewater treatment plants has been affected by the increase of incoming organic load caused by the expansions in developing countries. in the present investigation, the effect of chemically enhanced primary treatment (cept) process was studied on the enhancement efficiency of a municipal wastewater treatment plant in tehran, iran. jar test results showed a...

conclusions to solve the above mentioned difficulties, fundamental study most be carried out to discover the novel methods of ferrate(vi) production, focusing on increasing the product stability and the production yield. results despite the existence of these technologies, there is no full-scale application of ferrate(vi) in the water and wastewater industry which it is due to difficulties asso...

Issam Najm, Carol Tate, and Douglas Selby he upcoming Disinfectants/Disinfection ByProducts (D/DBP) Rule recognizes that a greater reduction in the total organic carbon (TOC) concentration of a natural water supply may appreciably reduce the concentrations of known and unknown DBPs formed during chlorination. Thus, the D/DBP Rule requires that conventional surface water treatment plants use enh...

Abstract This paper reports the effectiveness of chemical coagulation and biological techniques for treatment wastewater from industrial agricultural operations. Agricultural husbandry has been reported to produce that high content oxygen demand (COD), (BOD), turbidity as well organic inorganic pollutants. A comparison on use based coagulants optimum conditions required percentage removal effic...