Sewage phosphorus removal equipment and method based on media adsorption

Abstract

The invention relates to wastewater phosphorous removal equipment and method based on medium adsorption. The equipment comprises a tank body, an air compressor, a water inlet buffer tank, a water distribution plate, a sludge collecting tank, a sand washer and a chemical storage tank, wherein the tank body is filled with quartz sand; the sand washer and the water distribution plate are mounted in the tank body in sequence from top to bottom; a water outlet pipe is arranged on the tank body at the upper end of the sand washer; the sand washer is divided into a settling pond and a sand leaking pipe by a sludge discharge weir; a sand washing gas stripping through pipe is mounted in the sand leaking pipe; the bottom end of the sand washing gas stripping through pipe is vertically inserted into a position close to the bottom of the tank body; a gas supply pipe communicated with the air compressor is mounted in the sand washing gas stripping through pipe; the sludge collecting tank is connected to the bottom end of the settling pond through a sludge discharge pipe; the water distribution plate is connected with the water inlet buffer tank and the chemical storage tank through a water inlet pipe respectively. The phosphorous removal method comprises the following steps: making preparations, washing, performing quartz sand modification, and working. The equipment is convenient to operate, high in phosphorous removal efficiency, stable in phosphorous removal effect and easy to manage and control, so that the labor and management costs are reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a device and method for removing phosphorus from sewage based on media adsorption. Background technique [0002] With the development of economy and industrialization, more and more phosphorus-rich sewage is produced. Phosphorus is an important factor that causes eutrophication in water bodies. Eutrophication will cause algal blooms in water bodies and increase the difficulty and cost of water treatment. Therefore, relevant national laws and regulations have increasingly strict requirements on the content of nutrients such as nitrogen and phosphorus after sewage treatment. Phosphorus removal and phosphorus recovery from wastewater have increasingly become a hot spot in wastewater treatment research. [0003] At present, the phosphorus removal methods of sewage are mainly physical and chemical phosphorus removal method and biological phosphorus removal technology. The ...

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Problems solved by technology

[0005] However, the modified quartz sand modified by high temperature heating method and alkaline deposition method has strong adsorption of phosphorus and is not easy to fall off. It is difficult to remove phosphorus-containing sludge on the surface and recycle modified quartz sand, which is not suitable for industrial production.

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