WATER TREATMENT PLANT Russian patent published in 2023 - IPC C02F1/52 B01D36/04 B01D21/08 

FIELD: water treatment.

SUBSTANCE: devices designed for the purification of drinking and waste water by their coagulation treatment with liquid reagents. The water treatment plant contains a treated water supply unit, a housing, a flow distributor and a thin-layer purification module made in the form of a stack of inclined plates. The housing cavity is made in the form of a rectangular parallelepiped with a ratio of width, length and height as 1:2:2 and is divided by partitions into sequentially placed and connected water treatment chamber, a thin-layer purification module and a filtration chamber. The thin-layer purification module is connected with the water treatment chamber above and below the first partition, consisting of the upper vertical part and the lower inclined part with a length of at least the length of the thin-layer module plate, and with the filtration chamber - above the second partition, consisting of the upper inclined part with a length of at least plates of the thin-layer purification module and the lower vertical part. The lower edges of the inclined parts of the first and second partitions are offset relative to the corresponding upper edges towards the filtration chamber so that the stack of inclined plates placed between these inclined parts is at an angle of 60° relative to the bottom of the cavity. The inclined plates of the thin-layer purification module are profiled and arranged to ensure contact, forming through longitudinal channels of a closed cross section. The treated water supply unit is in communication with the water treatment chamber and its outlet is located above the first horizontal grate with a mesh size of 5 mm, the area of which is limited by the housing walls and the upper vertical part of the first partition. In the water treatment chamber there is a third partition with an inclination towards the filtration chamber and at an angle of 30° relative to the bottom of the cavity, the upper edge of which is rigidly connected to the transverse wall of the housing, and the lower edge is located below the first partition. For all partitions, the side edges are rigidly attached to the longitudinal walls of the housing, and the upper and lower edges are oriented perpendicular to the longitudinal walls of the housing. In the gap between the lower edges of the first and third partitions, a flow distributor is installed in the form of elements oriented perpendicular to the longitudinal walls of the housing and arranged parallel to each other with the formation of a gap between them. In the space of the water treatment chamber, limited by the housing walls, the first horizontal grate, the first and third partitions and the flow distributor, there is a floating load in the form of polystyrene foam cubes. In the filtration chamber there is a filtering load, bounded from above by a second horizontal grate, above which there are sensors for pH and the upper level of coagulated water. In the lower part of the filtration chamber there is a low level sensor and a perforated filtered water outlet pipeline. The treated water supply unit is made in the form of a pipeline with a diameter of 4% of the width of the housing cavity, oriented vertically and equipped with three branch pipes for pressure supply of reagents placed in series and from bottom to top, the distance between which is 35% of the width of the housing cavity.

EFFECT: reduction of weight and size characteristics by combining water treatment chambers, filtration and a thin-layer purification module in a single housing; increasing the efficiency of the extraction of dissolved and suspended substances; expansion of functionality due to the possibility of varying the number (no more than three), types and ratio of chemical reagents, the size of the floating load, as well as the amount of filter load; automation of the water treatment process.

3 cl, 1 dwg, 1 tbl