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Anna Remiszewska-Skwarek*, Sylwia Fudala-Książek**, Aneta Łuczkiewicz**
*PEWIK GDYNIA Sp. z o.o.; **Politechnika Gdańska

Abstract
In recent years, the municipal WWTP operated by PEWIK Gdynia receives increasing quantity of industrial wastewater with COD/BOD ratio above 2. In most cases, it is probably due to the required reduction of certain pollutants before delivery of industrial wastewater to the sewage system. Implemented pre-treatment of industrial wastewater by on-site plants usually remove the nutrients and easily biodegradable organic matter, while other organic fractions are directed to the municipal WWTP. In this study the influence of industrial wastewater on the efficiency of technological processes was analyzed on the basis of WWTP in Gdynia-Debogorze. For this reason, the COD fractions (readily (soluble) and slowly (particulate) biodegradable fraction, and non-biodegradable soluble (inert) and particulate fraction) were analyzed in raw wastewater. Obtained results were discussed in terms of the efficiency of treatment processes as well as the energy consumption and the operating costs of the plant.

Słowa kluczowe
oczyszczanie ścieków komunalnych, efektywność oczyszczania, ścieki przemysłowe

The Influence of Industrial Wastewater on the Energy Consumption and the Efficiency of Technological Processes in Municipal Wastewater Treatment Plant

Key words 
treatment of municipal wastewater, the efficiency of treatment, industrial wastewater

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