SU1747590A1 - Method for purifying effluents from storage reservoir of secondary raw materials - Google Patents

Abstract

Use: in ash dumps, shlamanohranilisch. SUMMARY OF THE INVENTION: in a process of sewage treatment, which includes supplying pulp to a reservoir and forming solid wastewater deposits in it, discharging sewage into a pond of clarified water and periodically releasing them from a pond to a natural watercourse, discharging and filtering water accumulator, discharged into the rod of clarified water through the discharge and drainage collectors. From the collectors of water is sent to the adsorbent neutralizer filled with granular materials. Thereafter, completely treated wastewater through the underground collector is diverted to a collection basin, from where they are discharged into a natural watercourse or reused for water supply. 3 h. apt. 5 il.

Description

The invention relates to hydraulic engineering, in particular, to alluvial accumulators of secondary material resources - ash: llamas, tailing dumps, sludge storages, etc., operated in different climatic conditions, and can be used in bulk storage tanks.

The purpose of the invention is to improve environmental protection from polluted effluents by increasing the efficiency of chemical wastewater treatment.

FIG. Figures 1-5 show the flow chart of the principle (the dotted line indicates underground collectors, and the arrows indicate the direction of movement of wastewater along the processing chain); Fig, 2 is a longitudinal section along

filter section axes,. in fig. 3 is a cross section for a variant with a tray; 1 in FIG. 4 and 5 are a plan and a section of a filter arranged in a channel in the form of successive ponds separated by filter dams from filter materials.

The method is implemented as follows.

Contaminated drains 1 from accumulator 2 through drainage collector 3 and / or drainage collector 4 are diverted to intermediate basin 5 and further along underground reservoir or open channel b are gravitated to the working section of filter 7, where they clean sewage from mechanical and chemical contamination by pressureless filtration through a set of layers of inert and chemically active-5

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granular permeable materials 8 and 9, adsorbing mechanical and neutralizing chemical contaminants, entering into chemical reactions. Then, the purified water through the underground collector or open channel 10 is sent to the collecting pool 11, from where it is discharged to the natural water flow through the conduit 12 or returned to the water supply system.

The body of the buried filter tray is made of reinforced concrete with a waterproofing coating and filled with inert 8 and 9 chemically active granular materials. To protect against precipitation, frost penetration and other external influences in harsh climatic conditions, the body of the filter tray 7 is provided with a removable thermal-protective coating 13. Replacing waste materials 8 and 9 of the cleaning filter and repair the filter section 7 is carried out with the cover removed 13.

A variant of the filter 7 in the open trapezoidal channel is carried out by arranging a series of settling ponds 14 using filtering separating dams 15, which are poured from materials 8 and 9, and the dams 15 are made from one such material or from a combination of different materials

The type and composition of materials 8 and 9 of the filter 7, their volume, the number of layers and the sequence of laying are determined on the basis of the composition of the contaminants and the optimal sequence of chemical reactions when filtering wastewater through the filter 7.

Claims (4)

Claims 1. A method for treating wastewater from a storage of secondary material resources, including feeding contaminated wastewater from a storage tank into a pond of clarified water and discharging water, characterized in that, in order to improve environmental protection from contaminated drains by increasing the efficiency of chemical treatment sewage, between the reservoir and the clarified water pond, a collecting basin is installed, the clarified water pond is installed on a non-filtering base, the contaminated the effluent from the clarified water pond is discharged by gravity through a manifold made between the clarified water pond and the extended chemical filter, and the extended chemical filter is performed in As a hydro-insulated water supply system, filled with successive layers of permeable, granular, chemically active materials, adsorbing mechanical and neutralizing chemical harmful substances, and then through a collector between the chemical filter and the collecting pool, the wastewater is diverted to the collecting pool, from where the wastewater is discharged in the natural watercourse or reuse them for water supply. 2. The method according to claim 1, characterized in that, in order to ensure continuity and reliability of the process the wastewater treatment process, the waterproofing plumbing structure is made of two parallel-connected sections — working and standby — and during the operation of one of them is carried out in the other repair and replacement of layers of spent chemically active materials with new ones. 3. A method according to claim 1, characterized in that the hydrolyzed water-supplying structure is made in the form of a reinforced concrete tray with a removable heat-insulating coating. 4. A method according to claim 1, characterized in that the waterproofing plumbing structure is in the form dividing dividing ponds in series with small ponds located on decreasing relief, dams-partitions are filled with chemical filter materials. 12 1f ten I  F / V /} x / z  . 10H eight 777 77 UUYYAH - / huhhhh xxx x x l x x x y. dx: x 33 Phie 2 / d 5VV4S X / 4SyX V Fi & W / / vj $ i