Sewage disposal system for empty tower ecological aeration filter bed

Abstract

The invention provides a sewage disposal system for an empty tower ecological aeration filter bed. In the system, a big filter bed is arranged; multiple filter material landfill areas and an empty tower aeration area are alternatively distributed to constitute the filter bed; one side of the filter bed is provided with a T-shaped water distribution pipe, and the other side of the filter bed is connected with a drainage canal through a water discharge pipe; the filter materials, such as grails, volcanic rocks, zeolites and the like, are filled in the filter material landfill areas; filter bed surface layer planting soil is laid on the top of the filer materials; wet land plants are planted on the filter bed surface layer planting soil; the pool walls of the filter material lanfill areas at two side of the empty tower aeration area are perforated walls which are provided with a plurality of permeable holes; aeration pipes are installed at the bottom of the empty tower aeration area; the end part of the water discharge pipe extending into the drainage canal is provided with a rubber ripple sleeve which is provided with a rope, and the rope is drained out of the drainage canal; and the upper end of the drainage canal is provided with an observation well cover. The sewage disposal system is convenient for overhauling, the efficient denitrification of the filter bed is achieved, the drainage height of the filter bed can be controlled at random, and the short current of the filer bed is avoided.

Description

Technical field [0001] The invention relates to ecological engineering technology for domestic sewage treatment, belonging to the technical field of environmental protection, and in particular to an empty tower aeration ecological filter bed sewage treatment system and method suitable for low energy consumption under various climatic conditions. Background technique [0002] As a sewage treatment technology, filter beds have been widely used all over the world. Over time, filter beds have gradually evolved into two categories: vertical flow filter beds and horizontal flow filter beds. In order to increase the aerobic microorganism activity of the filter bed, an aeration system is added at the bottom of the filter bed to form a vertical flow aerated ecological filter bed and a horizontal flow aerated ecological filter bed. In order to increase the removal rate and form a good ecological landscape effect, people plant emergent plants above the advection filter bed to form an ecolog...

AI Technical Summary

Problems solved by technology

The disadvantage of the first method is obvious, it is impossible to adjust the height of the liquid level in the filter bed

Although the second method can set 2-3 liquid level heights, it cannot adjust the height freely

In this way, in engineering applications, we often encounter multi-filter bed parallel systems. Due to the subtle differences in filter material stacking and filter material itself during construction, which are amplified by the huge volume of the filter beds, the water head loss in each parallel filter bed varies greatly, and the settings are the same. Short flow occurs in part of the filter bed after the height drain

Images