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Watertech WW

 
Overview

DESCRIPTION

The Azud Watertech WW wastewater treatment plant with MBBR (Moving Bed Bio Reactor) technology meets environmental standards for discharge from urban and industrial wastewater.

MBBR technology is based on the growth of biomass in plastic supports (carriers) that are suspended within the bioreactor mixed liquids. These carriers allow for a greater concentration of microorganisms per unit volume than a conventional system to reach high-quality effluent in a minimum area of implementation.

  • MBBR wastewater technology is biologically stable against load and flow peaks and easy expands without theneed for civil works (only required to increase the carriers’ percentage in the biological reactor). The ratio treatment capacity/footprint is higher than a conventional system.
  • Fully autonomous operation ensures the water quality and the maximum equipment protection. No need for permanent staff.
  • Compact, modular plant, with simple and immediate installation and operation. No civil engineering works and no setbacks.
  • All electromechanical and control equipment needed for the entire purification process is integrated in a single module.
  • Installation does not require a complex foundation. Easy accessibility to all system elements.

 

Water-Purification_Watertech-WW_pic

 
Solution

Water-Purification_Watertech-WW_solution

 
Design Criteria
  • Required system performance. Define the degree of reduction of pollutants necessary to reach the disposal or reuse limits set by regional organizations or water authorities.
  • Flow rates. Accounts for daily flow and peak hour flow of wastewater to be treated.
  • Investment costs. Accounts for the cost of land (plant location), the space available and space required for the wastewater treatment plant.
  • Operating costs. Power consumption, waste management costs, maintenance, and more.
  • Simplicity of operation and maintenance. Consider if specialized staff available to monitor, operate and maintain the plant.
  • Environmental impact. Visual impact of the installation, possibility of civil works, nuisance (odors and noise).
 
Technology

 

WW_LINE_OF_SLUDGE

LINE OF SLUDGE

Treating sludge produced in the primary and secondary treatments to reduce fermentability and volume. Can use different techniques: concentration or thickening, digestion, conditioning, drying, incineration or removal.

 

WW_PRETREATMENT

PRETREATMENT

A set of railings and rotary drum screens eliminate bulky suspended substances (plastics, rags, leaves) and sand, fats and oils that can cause blockages or damage to pipelines and electromechanical equipment and may interfere in the proper operation of downstream processes. At this stage, developed processes of homogenization or neutralization of the wastewater.

 

WW_PRIMARY

WW_SECONDARY

WATER LINE

  • Primary treatment: The stage that removes suspended solids, sand, grease and oils that have not been removed during pretreatment (usually a primary clarifier). If the wastewater is high in colloids, doses of coagulants and flocculants are used to allow its settling.
  • Secondary treatment: A main stage that defines a treatment system, where a biological reactor removes biodegradable organic matter not removed in previous treatments through the development of microorganisms, with appropriate conditions of oxygen and nutrients, and use of the organic matter as food for microorganisms to synthesize new microorganisms. In the process of assimilation of organic matter settleable flocs (sludge) are generated and are separated from the treated water in a secondary clarifier. Some of this sludge is recirculated to the biological reactor and other parts are vented to the sludge treatment system.
    Aerobic biological processes are divided in a suspension culture (microorganisms remain suspended in the wastewater) and a fixed culture (microorganisms adhering to a support creating a biofilm).
  • Tertiary treatment: Additional stage in the wastewater treatment process to reduce levels of non-biodegradable organic matter and inorganic salts (nitrogen and phosphorus) to required discharge limits (usually with anoxic biological processes).As tertiary treatment is also considered reuse treatments, through filtration and disinfection treatment of water is obtained as reclaimed water suitable for further use.
 
Technical Specifications