Liquid chromatography (LC) coupled to diode array detector was employed to follow benzoic acid concentration profiles, while chemical oxygen demand and dissolved organic carbon (DOC) analyses were carried out to assess the extent of mineralization.
Although these adsorbents have shown promising results for the removal of pollutants from wastewater, there are still limitations encountered in their use including their low uptake capacity when used in the raw form and the release of organic components leading to a high chemical and biological oxygen demand and total organic carbon (Abdolali et al. 2014).
The organic contents, in terms of chemical oxygen demand and total organic carbon, were found to be slightly higher in the lake water than that in the reclaimed water, but substantial reduction of the total concentration of 52 trace organic chemicals was obtained and microorganism toxicity, phytotoxicity, aquatic vertebrate toxicity and genotoxicity, were significantly weakened after open storage.
It has been found that such combination (the required dose is about 1 kGy) allows one to decrease chemical oxygen demand and total organic carbon values of wastewater to the value below 25 ppm and, as a consequence, to increase the recirculation rate of wastewater from 20 30% up to 70 80%.
Furthermore, the level of pollution in wastewater of the novel strategy has fallen greatly as the chemical oxygen demand and the total organic carbon were decreased by 50.15% and 64.39%.
A new and innovative method for oxidation of dissolved compounds in water – the "Watercatox" process – has been developed in order to reduce the chemical oxygen demand and the total organic carbon in industrial wastewaters.
The advantages of the anammox process, over the conventional method of nitrification and denitrification, include the lower oxygen demand and the absence of external carbon sources requirements.
Organic matter from waste and wastewater have high biological oxygen demand (BOD) and carbon oxygen demand (COD) values and, hence, microorganisms can grow, utilizing the nutrient present in waste water and can convert them into valuable compounds and polymers.
The effluent was characterised by the general parameters total organic carbon (TOC), chemical oxygen demand and color, and it was analysed for chlorinated low molecular weight compounds using GC MS.
