PL425741A1 - Plant and pond wastewater treatment plant with removal of biogenes and renewal of water - Google Patents

Abstract

The subject of the notification is a plant-pond sewage treatment plant with the removal of nutrients and water regeneration with a vertical subsurface flow, including a settling tank, a pumping station, an open tank with a plant filter, an artificial open pond, a system of pipes and pumps and equipped with a denitrification bed and a phosphorus bed, characterized that the plant filter (3) consists of the following horizontally arranged layers: the upper layer (3a), the organic layer consisting of wood chips covered with manna, the grinding mill (3b), the second layer (3c) below, consisting of coarse-grained gravel with aeration pipes ( 5), the third layer (3d) consisting of coarse sand with the addition of magnesium lime, the lower layer (3e) of gravel with drainage (4) placed in it to collect treated sewage, the open pond (6) consists of a denitrification bed (7) built from three horizontally arranged layers, from the top: the first layer (7a) of peat covered with sedge (7b), the second layer (7c) of coarse sand and the third bottom layer (7d) of coarse gravel with drainage (8) with a recirculation pump (9) and phosphorus bed (10) made of two horizontally arranged layers, from the top: first layer (10a) sand mixed with magnesium lime and covered with calamus (10b), below the second layer of gravel (10c) with drainage (11) placed in it, while in the open pond (6) the water level is above the upper surface of the denitrification bed (7) and the bed Phosphorus (10), which are located in open reservoirs (12) placed in an open pond (6).