Reuse and/or recycle of water

Applying all concepts of circular economy, in which rejects are transformed in products, the projects of recycling and/or reuse of water are fundamental for the operational balance of the company. Many times, the availability or not of water is a decisive factor for the implementation of a company in a determined place.

From the social point of view, recycling and/or reuse helps to maintain hydric bodies directed to provision of water, in addition to contributing with all productive chain generating direct and indirect jobs. From the economic point of view, the implementation of such system contributes to the reeducation of costs and water capturing, including chemistry products and electric energy for the treatment, in addition to minimizing generated environmental impacts.

The systems of recycling and/or reuse seek to reduce the capturing of raw water, minimizing the production of effluents and decreasing company costs and the picture of water shortage in the country – specially in places with low hydric offer or with demands higher than the production capacity.

Allonda has large experience in this market and is highlighted with an engineering team that is dedicated to the area of effluents treatment and large experience in water management, implantation, and operation of recycle and reuse systems. The innumerable projects of dimensioning of stations of treatment of sanitary and industrial effluents already made are an important differential when it comes to build an economically viable solution.

Moreover, Allonda has a structure of development and construction of own equipment, which allows the creation of customized solution for each project.

Implementation of water and reuse

  • Landscape irrigation: parks, cemeteries, golf fields, official tracks of motorways, university campuses, green belts, residential fields
  • Irrigation of cultivation fields: forage plantations, fiber plants and seeds, food plants, ornamental nurseries, protection against frost
  • Industrial use: cooling, boiler feedwater, processing water
  • Aquifer recharge: recharge of drinkable aquifers, marine intrusion control, control of soil plunging
  • Non drinkable urban uses: landscape irrigation, firefighting, discharge of flushing, air conditioning system, vehicle washing service, street, and bus stop cleaning.

Negative impacts from the indiscriminate use of water

  • Higher consumption of hydric resources, especially drinkable water
  • Unbalance in sustainability
  • Increase on the throwing of effluents in hydric bodies
  • High investments with low incomes
  • Low conservation of water
  • Discouragement to the self-sufficiency of hydric resources

How to apply a project of water recycling

The first step is to understand the hydric balance so as to define the outflow of raw water captured and the outflow of water to be treated for reuse. From a wide range study with all generated effluents of the industry, and with all outflow of captured raw water it’s possible to outline an adequate project.

For this, Allonda counts on a multidisciplinary team capable of applying knowledges of Hydrology, Hydraulic, Geology and Biology of Treatment of Effluents, Water Treatment System, Fluid Mechanics, Treatability Studies and Chemical Engineering in the projection of an efficient reuse system.

Such process must match the NBR Nº 13.969’s norm, which regulates the complementary treat and final disposal of liquid effluents. The main technological routes to treat the sanitary and industrial effluents in hopes to fit it in this classification are:

  • Secondary and tertiary treatment of sewage and effluents
  • Filtration, including filtration with adsorbing beds
  • Cleansing for remotion of parasites, bacteria, and pathogenic agents
  • Ultrafiltration – MBR (Membrane Bio Reactor)
  • Reverse Osmosis

One of the most relevant points in water reuse projects is the risk management, which involves correct cleansing of the effluent. In this process is necessary to guarantee sanitary safety, once the effluents have chemical and biological pollutants that can bring risk to human health.

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