DE3247152A1 - Percolation section as outlet structure for waste water ponds and clarifying ponds - Google Patents

Abstract

Percolation section made of natural pebble, gravel or metalworks slag for ponds in the outlet area. Outlets, in particular in the case of waste water ponds, have hitherto been produced via pipe connections, so that the settling process of sludge has been greatly impaired and with relatively high feed rates, a strong suction action and turbulent mixing motions of the water in the outlet area occur. The percolation section reduces the flow velocity and ensures a uniform take-off of the water from the pond surface even with relatively high feed rates and thus improves the clarifying action in the waste water pond. Moreover, the water level in the pond increases with higher feed rates and thus simultaneously acts as a buffer tank.

Description

Criticism of the state of the

Technique: In this consolation there is a turbulent mixing movement of the water and a soy effect in the outlet area are unavoidable, so that there the separated Schlairrn is whirled up and transported further. (magazine correspondence Abwasser ", year 1979, issue 8, page 407, 4.2.1 settling effect).

In addition, a complete water exchange can be achieved in large pond systems can only be improved by adding # itdän: i, en.

(Lower Saxony Ministerialblatt No. 39 1981, page 796 "General recognized rules of technology for the construction of unventilated waste water pond systems, Rd Erl. D. M1. v. 18.8.

1981 -315-321210 -Gält L 74110-, Section 3.24) Task: The invention is based on the task of creating turbulent mixing movements in sewage ponds Avoid water and suction in the outlet area as well as an even To achieve drainage of the wastewater from the pond surface.

Wung: This task is carried out with a generic facility the characterizing features of claim 1 solved.

Another embodiment of the invention: Through the flow openings within the seepage distance, the water level is achieved with higher inflow quantities rises in the pond and so the pond serves as a buffer basin. In addition, through the overflow edge, even if the seepage path overflows, does the job of Claim 1 still largely resolved.

Achievable advantages: Greater clarification effect of the sewage ponds and at a larger inflow (rainy weather) a damming of the ponds, so that they at the same time serve as a buffer basin (rainwater retention basin).

Description of one or more exemplary embodiments: Two exemplary embodiments of the invention are illustrated in the drawings and will be described in more detail below described.

Fig. 1 shows a drainage path between 2 ponds, Fig. 2 a drainage path between pond and trench mode of action of the invention shown: By the bottom slope of the seepage path "1: n and the permeability of the bulk material (Grain build-up) the flow rate within the percolation path is determined.

For the free flow of a certain Amount of water are the side lengths of the flow opening "a" and "b" and the width "1 'of the seepage path authoritative.

The height from the flow opening to the overflow edge "c" is determined the level of the pond up to the overflow of the percolation path.

The slope inclination is determined by the angle of the internal friction of the bulk material "1: m" is specified.

Claims (1)

Claims: Generic term:: 1.4 Drainage route made of natural stone gravel, Gravel or slag for ponds in the outflow area, especially for # \ water pond systems, Characteristic part: characterized in that by the gradient, the grain size composition of the bulk material, width and position of the seepage path, the flow rate and the flow through the pond can be determined. Preamble of the dependent claim: 2nd infiltration section according to claim 1, Characteristic part of the dependent claim: characterized in that the seepage distance with flow openings and a horizontal overflow edge throughout Width is provided. Description Title: Drainage route made of natural stone gravel or gravel Slag for ponds in the outlet area. Type of the subject of the application: The invention relates to a seepage path made of natural stone gravel or slag for ponds in the outlet area the preamble of claim 1. Information on the genus: The seepage section should on the one hand flow velocity in the pond and thereby avoid turbulent mixing movements of the water as well as ensure an even branching of the water from the pond surface, so that no suction can arise in the outflow area of the pond, and on the other hand in the case of a higher inflow through the throughflow openings provided, a damming up of the pond and through the overflow edge when overflowing a uniform Continue to ensure drainage across the entire width. State of the art with sites of discovery: At sewage ponds there are simple pipe connections between the ponds or with a view to keeping fish Holzmönche, (magazine "Korresspondenz Abwasser", year 1979, issue 8, page 409, section 5.3, experience ükor tormenting services 4. Ab-4. cut.