ESCO International (EI) articles

  For many commercial and industrial operations, looking at ways to reduce water and wastewater monthly bill
costs, water reclaim is essential. A major water treatment challenge encountered in the search for new water
sources is the reduction of total organic carbon (TOC) and Chemical Oxygen Demand (COD) at one or more
locations.

  Properly designed advanced oxidation processes have demonstrated successful removal of a wide range of
harmful organic contam

Chlorine is widely used in water treatment as a disinfection and oxidizing agent. However, the reaction of free chlorine in water leads to the generation of undesirable by-products and have harmful effects on industrial processes.

In high purity water systems, the presence of free chlorine in water may result in the deterioration of treatment units such as ion exchange beds and RO membranes.

Traditional treatment methods for the removal of residual free chlorine include adsorp

In recent years, improvement in ozone based advanced oxidation process design and efficiency resulted in lower capital and operating costs. An investigation into alternatives for hard COD, TOC and foaming agent oxidative destruction which is economically attractive and do not generate sludge, lead to the evaluation of our ozone based advanced oxidation processes (AOP). The results of this pilot study indicate that ozone-based AOP can effectively remove COD and TOC without the generation of sl

For many commercial and industrial operations, looking at ways to reduce water and wastewater monthly bill costs and ensure compliance with both current and future regulations, water reclaim is essential.

A major water treatment challenge encountered in the search for new water sources is the reduction of TOC and COD at one or more locations.

The purpose of this study is to show the importance of AOP process design and optimization and the significant implic

Introduction

In recent years improvements  in ozone based advanced oxidation technology efficiencies have lowered capital and operating expenses, improving the viability of the use of ozone as the main oxidant.

An investigation into alternatives for refractory COD removal which is economically attractive and do not produce sludge lead to an evaluation of ozone based advanced oxidation processes

The results of this p

The aim of this study was to investigate the use of ozone-based advanced oxidation processes for the oxidative destruction of COD in a petrochemical facility.

Several  AOP experiments were carried out in order to select and optimise the successful treatment option.

A LABO3-AOP pilot unit was used where filtered wastewater (COD 1250 ppm) was circulated throughout the AOP reactor and ozone & H2O2 injected at various dose rates using Venturi-type  injectors. Treated

A chemical manufacturing plant needed to remove cobalt from biologically treated wastewater.

The current cobalt concentration is higher than 1000 ppb and needs to be reduced to below 5 ppb.

Cobalt speciation analysis results have shown that much of the cobalt is present as organically bound complexes.

These complexes are known to be difficult to remove by adsorption, precipitation or ion exchange.

The aim of this study was to test the use of advance

ESCO International; a company specialising in Advanced Oxidation Processes, Ozone and UV systems and with the primary objective of resolving water pollution issues on a global scale, worked on a semi-pilot scale project with an internationally well-known company in the chemical & polymers production industry, based in US.

Organic compounds of concern include BI, MI, BPA, HEG and NPI compounds, known as recalcitrant compounds but not bio-toxic. These organics are signature compo

Due to its undisputable Success &  Efficiency in destroying Cryptosporidium and Combined Chlorine, The Centers for Disease Control and Prevention Recommend installing UV Systems

It has taken many years of testing to convince the pool market that the most reliable and best available option for treating and disinfecting water is through using Ultraviolet (UV) technology. UV systems have breached the market through providing a missing link in the disinfection system puzzle,

ESCO International Solutions & Technologies provide a unique portfolio of technical expertise and equipment, specializing in Ozone, UV and Advanced Oxidation Processes (AOP) for water, gas effluent & Odour treatment. Adapting to strict user guidelines and customer focused design means ESCO International systems are reliable and delivers high water purification standards.

As conventional treatment methods become limited in their effectiveness, never has industry been under such