Double-chemical-treatment sewage treatment tank

Abstract

The invention relates to a double-chemical-treatment sewage treatment tank. A tank body is internally provided with a front-positioned chemical reaction cabin, a floating filtering device and a reaction and separation cabin, wherein the front-positioned chemical reaction cabin comprises a sewage inlet, a sewage outlet and a chemical substance inlet; the floating filtering device comprises upper, middle and lower cabins; a plurality of floating filler filtering layers are arranged between upper and lower filtering screens; the lower cabin is provided with a liquid inlet; the sewage outlet is communicated with the liquid inlet through a liquid inlet pipe; the upper part of the upper cabin is connected with a backwashing pipe; a backwashing dreg discharging opening is formed in the bottom ofthe lower cabin; a filtered water outlet is formed in the side edge of the upper cabin; the reaction and separation cabin comprises a post-positioned chemical reaction cabin and a solid-liquid separation cabin at the lower part; one side of the post-positioned chemical reaction cabin is connected with a chemical substance feeding pipe which obliquely extends upward; the bottom of the solid-liquidseparation cabin is connected with a sediment discharging pipe; the solid-liquid separation cabin is further provided with a clean water discharging opening; a filtering baffle plate covers the cleanwater discharging opening; each pipe is provided with a control valve. The double-chemical-treatment sewage treatment tank has the advantages of simple structure, convenience for movement, conveniencefor dismounting and mounting and better treatment effect.

Description

technical field [0001] The invention relates to a dual chemical treatment 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; in addition, many existing sewage treatment devices have quite lim...

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; in addition, many existing sewage treatment devices have quite limited treatment capacity for sewage. The reason is that the chemicals were not mixed well in the sewage and the reaction time of the chemicals did not reach their full reaction

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