RU94025567A - Device for treatment of natural (underground) water from compounds of iron, manganese and ammonium - Google Patents

Abstract

FIELD: treatment of natural, particular, underground water from compounds of iron, manganese and ammonium in water supply systems of cities, settlements and separate industrial objects. SUBSTANCE: device for treatment of natural (underground) water from compounds of iron, manganese and ammonium has branch pipes for supply of water to be purified, purified and washing water, receiving chamber and filter medium. Device also has aerator trough installed at angle of 30-40 deg to horizon. Trough bottom has transverse slots whose edges are bent to opposite sides. Trough serves for aeration of water flow that results in intensive oxidation of variable-valency iron and manganese in reaction with dissolved oxygen. Oxide and hydroxide of iron and manganese precipitate during settling and filtering which acting as catalyst absorbs and intensifies precipitation process. Filtrate is removed by back flushing. Ammonium decomposes into ammonia gas and escapes due to reduced concentration. EFFECT: higher technico-economical efficiency and degree of purification of natural water from compounds of iron, manganese and ammonium.

Claims (1)

The invention relates to the purification (water treatment) of natural, especially underground, water from compounds of iron, manganese and ammonium and can be used in the water supply of cities, towns and individual industrial facilities. The objective of the invention: improving the technical and economic efficiency, the degree of purification of natural waters from compounds of iron, manganese and ammonium. The device contains nozzles for supplying purified, purified and washing water, a receiving chamber with filter loading, is equipped with a tray-aerator installed at an angle of 30-40 ° to the horizontal, transverse slots are made in the bottom of the tray, the edges of which are bent in opposite directions. The tray serves to aerate the flow of water, as a result of which intense oxidation of alternating valence iron and manganese occurs when interacting with dissolved oxygen. The oxide and hydroxide of iron and manganese precipitate during sedimentation and filtration, which, acting as a catalyst, adsorbs and enhances the deposition process. The filtrate is removed by backwashing. Ammonium decomposes into ammonia and evaporates, because concentration decreases. The proposed device gives a positive effect, i.e. iron up to 98.48%, manganese up to 36%, and ammonium up to 32.2%.