Sewage treatment tank

Abstract

The invention relates to a sewage treatment tank. The sewage treatment tank comprises a tank body, wherein the tank body is internally provided with a floating filtering device, a chemical reaction cabin and a solid-liquid separation cabin successively from top to bottom, wherein the floating filtering device comprises upper, middle and lower cabins separated by upper and lower filtering screens;floating filler filtering layers are arranged between the upper and lower filtering screens; the lower cabin is provided with a sewage inlet; the sewage inlet is connected with a liquid inlet pipe; the upper cabin is provided with a filtered water outlet; the filtered water outlet is communicated into the upper part of the chemical reaction cabin through a liquid outlet pipe; a backwashing pipe isconnected with the upper part of the upper cabin; a backwashing and dreg discharging opening is formed in the bottom of the lower cabin; the backwashing and dreg discharging opening is connected witha backwashing and dreg discharging pipe; the chemical reaction cabin is connected with a chemical substance feeding pipe; the bottom of the chemical reaction cabin is communicated into the solid-liquid separation cabin through a connection pipe; the bottom of the solid-liquid separation cabin is connected with a sediment discharging pipe; a clean water discharging opening is further formed in a funnel-shaped part of the solid-liquid separation cabin; the clean water discharging opening is connected with a clean water discharging pipe; a filtering baffle plate covers the clean water discharging opening. The sewage treatment tank has the advantages of simple structure, convenience for movement and convenience for dismounting and mounting.

Description

technical field [0001] The invention relates to a sewage treatment tank. Background technique [0002] With the increasing awareness of environmental protection, the country's policies on environmental protection and convenience have become more stringent, and sewage treatment has been raised to a new level. There are not only floating objects and solid waste in sewage, but also toxic and harmful elements. However, the existing sewage treatment Generally, civil engineering is used to build fixed buildings such as sewage treatment canals and sewage treatment pools, which is not only costly and time-consuming, but also once the construction is completed, there is no possibility of changing the place. There is no problem for the sewage treatment of some large chemical enterprises, but for small It is very inconvenient for enterprises or for the scene of temporary sewage treatment on site. Contents of the invention [0003] The present invention proposes a sewage treatment ta...

AI Technical Summary

Problems solved by technology

[0002] With the increasing awareness of environmental protection, the country's policies on environmental protection and convenience have become more stringent, and sewage treatment has been raised to a new level. There are not only floating objects and solid waste in sewage, but also toxic and harmful elements. However, the existing sewage treatment Generally, civil engineering is used to build fixed buildings such as sewage treatment canals and sewage treatment pools, which is not only costly and time-consuming, but also once the construction is completed, there is no possibility of changing the place. There is no problem for the sewage treatment of some large chemical enterprises, but for small It is very inconvenient for enterprises or for the scene of temporary sewage treatment on site

Images