Vertical-flow type settling pond

Abstract

The invention relates to a vertical-flow type settling pond for sewage treatment, comprising a water feeding area, a water feeding pipe, an overhaul area, a water collecting area, a filtering area, a settling area, a sludge collecting area and a water discharging pipe. The water feeding area extends from the top of the settling pond into the lower part of the settling pond, the water feeding areais provided with the water feeding pipe, the overhaul area, the water collecting area, the filtering area and the settling area are sequentially arranged around the water feeding area from the top down, the sludge collecting area is communicated with the lower part of the settling area, a water collector which can be regulated according to the water level is arranged in the water collecting area,and the water collector is communicated with the water discharging pipe; and the water collecting area further comprises a filtering water buffering section arranged at the lower part of the water collector. Due to the existence of the filtering water buffering section, water after filtered in the filtering area firstly enters into the filtering water buffering section to be buffered and then enters into the water collector, thus the uniform water discharge at an water discharge part still can be ensured due to the action of the filtering water buffering section even though filtering materials or biological fillers are aggregated.

Description

technical field

[0001] The invention relates to the field of sewage treatment, in particular to a vertical flow sedimentation tank for sewage treatment. Background technique

[0002] Sedimentation tanks are an important infrastructure in water treatment. The existing sedimentation tank has a single function, basically only the functions of sedimentation and separation. The sedimentation efficiency and separation effect are related to the static separation area and time. To obtain high separation efficiency and effluent quality, there must be sufficient sedimentation area and static separation time, but this will cause the sedimentation tank to occupy an excessively large area, and For some fine suspended solids, it is actually still difficult to remove them by static separation and sedimentation. Therefore, in the case of higher requirements for effluent water quality, the existing technology usually adopts the method of adding auxiliary facilities, such as adding aerated ...

Images