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Jerzy Mirosław Kupiec, Anna Oliskiewicz-Krzywicka, Piotr Stachowski
Uniwersytet Przyrodniczy, Poznań

Abstract
The aim of this study was to evaluate selected elements of the management of domestic and production sewage and an estimate of amount of macroelements NPK in domestic sewage, used on fields in selected farms of Wielkopolska voivodeship. The main sources of data were special designed questionnaires taken in selected farms. The data were combined with information obtained in The Agricultural Advisory Center in Poznań and communities and included the period 2004−2010. The study area was covered by eight communities situated in the central part of Wielkopolska region - Borek Wielkopolski, Dolsk, Gostyń, Jarocin, Koźmin Wielkopolski, Krzywiń, Piaski and Śrem. 72 conventional farms, diversified in terms of their size, specialization, crop and animal production were also chosen. The examined farms were subjected to detailed characterization in terms of their sphere of production. Domestic wastewater management, using the method of preparation of silage, and the degree of risk to the environment due to the risk of leakage into the soil silage juice were analyzed. Content of nitrogen, phosphorus and potassium in samples taken from 16 different farms was analyzed. Quantity of nutrients in domestic wastewater and which could be possibly applied to the field were calculated.
The study shows that 83% of the analyzed farms had access to water supply. Due to the lack of proper infrastructure and the possibility of alternative wastewater management and disposal of domestic waste, farmers often applied sewage directly into the fields. 49% of produced sewage is poured directly into the fields. None of the 16 domestic sewage samples meets permitted standards for nitrogen concentration. Only one because of phosphorus and 11 due to potassium the predetermined limits of nutrient concentration in domestic sewage introduce into the soil or water does not exceed. On average with wastewater farmers brought in the agricultural land 12 kg of N, 3 kg of P2O5 and 16 kg of K2O per 1 ha. The problem there is also the method of preparation silage piles. As many as 56% of farmers prepares piles directly on the ground, without isolation, with the risk of penetration of pollutants into groundwater and surface water.

Słowa kluczowe:
ścieki bytowo-gospodarcze, rolnicze zagospodarowanie ścieków, biogeny w ściekach

061. Assessment of Selected Elements of Water and Sewage Management and Load of Farmlands with Macroelements from Domestic Sewage in Selected Farms of Wielkopolska

Keywords:
domestic and production sawage, agricultural sewage management, nutrients in the wastewater

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Zadanie Czasopismo, Annual Set The Environment Protection Volume 17. Year 2015 (wersja elektroniczna) dofinansowane ze środków Ministerstwa Nauki i Szkolnictwa Wyższego