Marie Polyester - Producent oczyszczalni, szamb , toalet
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Regardless of the choice of second degree sewage treatment manner, i.e. aerobic treatment, determined by many factors (mainly soil conditions and location conditions) the first, basic and constant element of an adjacent sewage treatment plant is always a multi-chambered putrefactive settling tank Marie. Applying possible solutions: -with a seepage drainage in the form of filtration ditches filled with gravel. Cheapest and most often used type. Sewage after the initial treatment in the putrefactive settling tank flows into the drainage placed on a layer of gravel. Then, after additional treatment in the gravel and possibly the layer of sand below it flows into the soil. If the subsoil waters level is high the seepage drainage is placed in a sand mound with an additional sewage pumping station used.   -with a gravel-sand filtration deposit with a channel to a drain well, river or surface waters. May be used on impermeable soil - clay or loam- and operates similarly to the one utilizing the seepage drainage, but the sewage after filtration and treatment in gravel and sand layers flows into the skimming drainage, and afterwards is channeled into surface waters or soil (e.g. through the drain well) beneath the impermeable layer.    -with a gravel-sand filtration deposit hedged with marsh flora, also called root or hydro-botanical treatment plants. Used usually on clay or loam soil. Initially treated sewage is seeped through them or through gravel, sand or soil, and the terrain is planted with flora common for marshy areas: reed, bulrush, willow(Salix viminalis) or daffodils. The treatment plant operates by utilizing the symbiosis processes of plants and microorganisms developing in the filter's deposit. the root treatment plant is more efficient then the sand filter (especially in the summer), while in the winter its efficiency is similar to the sand deposit.  -with a biological deposit. They take very little space (may therefore be used on small estates where it is hard to keep the required distance from water sources). Usually used in areas where sewage cannot be seeped into the soil but surface waters are located nearby. They are much more expensive then seepage drainage and more sensitive to incorrect exploitation. Similarly to other types of treatment plants they have a putrefactive settling tank and apart from it a reservoir filled with a specially chosen plastic material called a biological deposit (on which the microorganisms develop after channeling the sewage). |
