SU1685881A1 - Earth filter - Google Patents

Abstract

The invention relates to the deep treatment of small volumes of wastewater by soil filtration. The purpose of the invention is to intensify the purification process, saturate the aquatic environment and filtrate with oxygen in the air and improve its use. The soil filter contains a supply pipeline, external contour dams with vertical screens and an internal filter with a filtering surface, vegetation and underlying layer. The improvement is that the soil filter is equipped with an aerator installed in the center, a recess with a screen located in the filter is made under the aerator. When the proposed filter design works, intensification of the cleaning process, year-round operation, saturation of the aquatic environment and filtrate with oxygen are achieved, improving its use , ensuring filter operation in light and heavy soils 1 sludge. WITH

Description

The invention relates to the deep treatment of wastewater of small objects, and more specifically to soil filters, fast infiltration sites and botanical sites.

The aim of the invention is to intensify the process of cleaning, saturating the aqueous medium and filtrate with oxygen and improving its use.

The drawing shows a soil filter, a longitudinal section.

The soil filter contains external contour dams 1 with vertical screens 2, supply pipe 3. filtering surface 4, equipped with vegetation 5 (for example, higher aquatic vegetation in the form of rotosa, reed cane, etc.), in the center a recess 6, equipped with a screen 7 and aerator 8. bedding layer 9, filter 10, dusting 11 drains, discharge drains 12 and discharge pipe 13 The aerator can be arranged in the form of a floating mechanical or pneumomechanical aerator or a pneumatic aerator located at the bottom of the recess and 6.

When the purified water is filtered into the ground, the drains 12, their dusting 11 and the discharge pipe 13 are not installed.

In small objects, with a small installation capacity, the discharge pipe 13 is run without drainage 12 and dusting it 11.

The filter works as follows.

The supply pipeline 3 supplies the initial waste liquid to the center of the recess 6 of the soil filter, in which the liquid is aerated due to the operation of water flow 00

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00 00

8. The aerator 8. a rising or lowering level of water above the filtering surface 4 of the soil filter or a pneumatic aerator located at the bottom of the recess 6. From the deepening of b, water fills the filtering surface 4 of the soil-forming filter, forming a body of water above it. The level of water at the same time above the recess 6 and the filtering surface 4 is leveled. A soil filter consists of two or more sections and can operate in two modes: with constant water flooding of the filtering surface 4 and recess 6; with periodic water supply to the soil filter section so that the filter surface rests periodically. In this case, flooding of the filter surface 4 is provided, followed by a drying period. During the rest of the filtering surface, the water is located exclusively in the recess B. The pontoon aerator 8 is then lowered into the recess 6, not touching the screen 7, and works periodically to create aerobic conditions in the water of the recess 6. When the initial fluid enters the pipe 3 To flood the filtering surface 4, the pontoon aerator 8 operates continuously, providing aeration of the liquid in the cavity 6 and enrichment of the liquid entering the filtering surface 4 with air oxygen.

The water passing the filter surface 4 is filtered through the bedrock.

layer 9, made mainly of sand, and the filter 10. The filtrate is discharged into the ground or for further processing via the discharge pipe 13 through or without drain 12.

When the soil filter is operating in the continuous flooding mode, mainly higher aquatic vegetation is planted on the filtering surface, and grasses are planted in the periodic flooding mode. When the filtering surface 4 of the soil filter clogs, the underlying layer 9 is selected and replaced with a new one.

The use of the invention provides an intensification of the cleaning process, increases the growth of plants, and improves the use of air oxygen.

Claims (1)

Invention Formula A soil filter containing inlet piping, external contour dams with vertical screens and a filter with filtering surface, vegetation, underlying layer, purified water removal unit and filter located inside, in order to intensify the cleaning process, saturation of the aqueous medium and filtrate air is oxygenated and its use is improved; a recess with a screen is made in the central part of the filter, a supply pipe is attached to the lower part of the recess, and the soil filter is equipped with eratorom located above the recess.  // // / x / 7.7 11 P 3