Upgrading and reconstruction method based on constructed rapid infiltration sewage treatment facility

Abstract

An upgrading and reconstruction method based on a constructed rapid infiltration sewage treatment facility is an improved method for the constructed rapid infiltration sewage treatment facility, and comprises the following steps: calculating the volume of constructed rapid infiltration tanks in the constructed rapid infiltration sewage treatment facility; respectively reconstructing a plurality of constructed rapid infiltration tank bodies into multiple stages of AO tanks connected in series, and meanwhile, reserving original water outlets in the AO tanks arranged in an even stage; directly communicating water outlet ends of an original coarse screen and a pumping station with water inlets of reconstructed multiple stages of AO tanks through pipelines; correspondingly taking a presedimentation basin and a sand filter, which are sequentially communicated with water outlet ends of the original coarse screen and the pumping station in the constructed rapid infiltration sewage treatment facility, as a secondary sedimentation basin and an advanced treatment sand filter, which are sequentially communicated, and communicating an output opening of the advanced treatment sand filter with an UV disinfection pool, communicated with a main water outlet pipe in the constructed rapid infiltration sewage treatment facility, through a pipeline; communicating each stage of AO tank with an air blower arranged outside through an aeration pipeline. The upgrading and reconstruction method can meet the reconstruction requirement of most constructed rapid infiltration sewage treatment factories, and is low in investment.

Description

technical field [0001] The invention relates to a sewage treatment system. In particular, it relates to an upgrading method based on artificial quick-seepage sewage treatment facilities. Background technique [0002] The artificial rapid infiltration system is a type of land treatment, which refers to the controlled release of sewage on the surface of the artificially constructed infiltration medium, so that it can experience different physical, chemical and biological effects during the downward infiltration process. Finally, the process of purifying sewage is achieved. A typical artificial rapid infiltration system consists of a pretreatment unit and an artificial rapid infiltration unit. The function of the pretreatment unit is mainly to reduce the SS in the sewage, so as to increase the infiltration speed of the infiltration tank and prevent clogging, usually including pre-sedimentation tanks, sand filters, etc.; the main body of the artificial fast infiltration unit i...

AI Technical Summary

Problems solved by technology

[0006] 1. The amount of sewage water has increased significantly, making the alternately operating artificial fast osmosis process unable to meet the continuously growing demand for sewage treatment;

[0007] 2. The water quality of sewage has deteriorated significantly, and townships have shown the characteristics of production sewage, and various water quality indicators have greatly exceeded the limit that the artificial rapid infiltration process can bear;

[0008] 3. The entry of suspended solids and toxic and harmful substances has greatly increased the clogging of artificial quick osmosis tanks and the pollution of filter materials. The operation and maintenance are very cumbersome, and the artificial quick osmosis tanks have been paralyzed in some areas and cannot exert their processing capacity.

[0009] However, the country's requirements for water pollution control are becoming more and more stringent, and the first-level A treatment standard has been fully implemented in China. Under this background, the artificial rapid infiltration process can no longer meet the requirements of use, and new treatment and solutions need to be provided.

If the facilities adopting the artificial rapid infiltration process are demolished and the sewage treatment facilities are rebuilt, not only will there be great waste, but also because most of the processes are located in remote locations, the difficulty and cost of project implementation will be very high, which will bring economic losses to the national and local economies. Larger burden

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