Phosphorus containing wastewater treatment system and treatment method thereof

Abstract

The invention discloses a phosphorus containing wastewater treatment system and a treatment method thereof, wherein the treatment system at least comprises a pretreatment pool, a coagulation sedimentation device, a sand filter tank and a clear water regulation pool which are sequentially connected; the pretreatment pool is used for enabling macromolecular pollutants to be reacted with a reducing agent to produce small molecule pollutants under the acid condition and is internally provided with an ORP determination device and a stirring device; the coagulation sedimentation device is used for enabling the pollutants to form difficult-soluble matters to be separated from water; the sand filter tank is used for removing fine suspended particulate matters in wastewater; and the clear water regulation pool is used for regulating a pH value of clear water to be between 6 and 9. In the technical scheme of the invention, the design is ingenious, and the structure is simple; by arranging the pretreatment pool and performing pretreatment on the wastewater with the reducing agent, macromolecular chains are broken to obtain small molecules, so that the subsequent coagulation effect of the wastewater is improved, the advantageous condition is provided for subsequent sedimentation treatment, the removal efficiency of organic phosphorus is grealty improved, and the final effluent quality is ensured.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a phosphorus-containing wastewater treatment system and a treatment method thereof. Background technique [0002] Phosphorus pollution in wastewater treatment is a major cause of water eutrophication. High phosphorus wastewater mainly comes from food wastewater, fertilizer production and processing, agricultural wastewater, etc. Countries and regions have strict requirements on the discharge of such wastewater. Therefore, phosphorus removal treatment is required first, and of course there are other pollutants discharge requirements to avoid direct discharge into rivers, causing serious pollution, in order to protect water resources. [0003] Conventional phosphorus-containing wastewater treatment methods include biochemical methods, adsorption phosphorus removal methods, and chemical phosphorus removal methods. [0004] 1. The biochemical method uses the principle of phosphorus ...

AI Technical Summary

Problems solved by technology

It is by adding chemical phosphorus removal agent to make it chemically react with pollutants in water to generate insoluble phosphate, and then achieve the purpose of phosphorus removal by solid-liquid separation. This method has a fast settling speed and is suitable for It has the advantages of strong sex, low cost and quick effect, but due to the complex components in the wastewater, especially when the coagulant is directly added to the wastewater containing organic phosphorus, the corresponding coagulation effect cannot be fully exerted, resulting in the final effluent after precipitation At the same time, due to design defects such as water distribution and filtration structure of conventional sedimentation tanks, the problem of poor sedimentation effect is often caused

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