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Главная Solutions Waste water treatment Disinfection

In their technical solutions engineering departments of ICB Group use different disinfection methods depending on the requirements to water being treated.

 

Disinfection is used in the following systems:

  • centralized municipal water supply of cities and villages from underground and surface sources;
  • purification of urban and industrial waste water,
  • conditioning of water of swimming-pools and water parks;
  • water conditioning at food and pharmaceutical productions;
  • process and recycling water supply of industrial enterprises;
  • individual utility and drinking water supply.

One of the main and most environmentally friendly disinfection methods is appliance of ultraviolet radiation.

ICB Group can supply both pressure and non-pressure ultraviolet disinfection systems from leading global producers. When reconstructing waste treatment plants we use the existing channels.

We provide disinfection with chlorine and sodium hypochlorite obtained in situ in electrolytic cells. Disinfection facilities consist of a chlorine feeding unit, chlorine store, mixer and contact tank. A chlorine facility must provide the possibility to increase the estimated chlorine dose in 1.5 times without changing the capacity of chemical stores.

Disinfection plants must ensure the decrease of bacterial contamination to the normative values. The efficiency of a disinfection plant can be assessed by the quantity of coliform bacteria remaining in water after disinfection, and by the concentration of residual chlorine when disinfecting with chlorine or its derivatives. The quantity of residual chlorine must be at least 1.5 mg/l at the required water-chlorine contact not less than 30 minutes, and the quantity of coliform bacteria in 1 l of waste water must be up to 1000 pieces.

Ozone treatment is used for advanced oxidation of organic substances, deodorization, discoloration and disinfection. To reduce COD by 1 mg/l, theoretical chlorine requirement in the process of oxidation is 4.43 mg/l of chlorine. Due to the fact that under the action of chlorine some soluble compounds convert into suspension, chlorination increases the content of suspended particles in water by 20%. BOD5 reduces by about 35%.


 
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