Company ProfileThe Catox Process
The Catox Process is one of the tools used by Everstech to process effluent while maximizing the recovery of water and valuable by-product materials and, simultaneously, eliminating pollution. The process has been used in a wide variety of industrial and agricultural settings, as described below.
The Catox system is unique in that it is: (a) physico-chemical and (b) two-stage.
Stage One separates any solid matter by chemical treatment, flotation or precipitation, the resultant sludge being treated separately.
Stage Two involves simple filtration, after which the liquid passes to a fixed bed reactor, which contains a large surface area of the catalyst to ensure maximum contact with ozone. The liquid emerging from the reactor is again filtered and is then clear, re-usable and sterile. The solid material from the filters can be fed back into the system for re-treatment and some of the original chemical input can be recovered in this way.
The whole set-up is a "once-through" system and removes most of the organic load, whether biodegradable or recalcitrant. Immunity to toxins and the ability to operate in extremes of temperature are two further valuable characteristics.
An initial body of data is required to facilitate the design of each customized Catox Process unit. Everstech provides a detailed questionnaire to its clients for this purpose.
Cost Savings and Benefits
The Catox Process provides an economical solution to waste treatment problems in several ways. To begin with, each Catox plant is manufactured on a modular basis to the greatest extent possible. The catalytic oxidation units are delivered complete and ready for installation on a base slab.
With low chemical dosage rates and minimal total power requirements, the operating costs per kg of BOD or COD treated are substantially lower than conventional systems. Maintenance costs are minimal.
The flexibility of the system and the ease with which it can be situated as near to the source of waste as possible eliminates much of the considerable cost of pipeline and associated drainage works connected with more cumbersome methods. Additionally, the small size of the unit results in a better, more economical use of land.
Application of the CATOX Process
The Catox Process can be used in the treatment of effluents in a wide variety of settings, including sewage treatment, metal finishing, paint technology, food preparation and canning, textiles, general chemicals, plastic manufacture, pharmaceuticals, synthetic fibers, non-ferrous metal processing, phenols and cyanide, oil treatment, leather and tanning, dyeing, paper pulp and cardboard, breweries and distilling, ceramics and marine wastes.
Further applications for the Catox Process include drinking water supplies, swimming pool recirculation and treatment, and closed-loop fish farm systems.