Multiphase circulation integrated sewage treatment process

Abstract

The invention provides a multiphase circulation integrated sewage treatment process. The process comprises steps as follows: step one, domestic sewage enters an oil-separating septic tank, and the septic tank is provided with multiple sections; step two, the domestic sewage is subjected to sedimentation and enters a multiphase circulation biological tank through a drum type grid, an umbrella-shaped aeration and extraction device upwards extracts the sewage below corrugated biological filler in the multiphase circulation biological tank to the position above the corrugated biological filler for umbrella-shaped aeration, the sewage flows through the corrugated biological filler from top to bottom, then the sewage flows to the position below the corrugated biological filler and is upwards extracted by the umbrella-shaped aeration and extraction device again, and the circulation is repeated; step three, after the circulation in the step two is performed for a preset period of time, the sewage enters a vertical fiber cloth filtering tank, and the sewage enters the vertical fiber cloth filtering tank from two sides of two pieces of W-shaped filter cloth arranged in parallel, is filtered through the filter cloth, then is converged between the two pieces of the filter cloth and is discharged from a filtered water discharge port. According to the multiphase circulation integrated sewage treatment process, the amount of produced sludge is small, and the property is stable.

Description

technical field [0001] The invention relates to a multi-phase circulation integrated sewage treatment process, which belongs to the field of sewage treatment. Background technique [0002] With the rapid development of the economy, the problem of rural environmental pollution has become increasingly prominent. The amount of major pollutants produced in my country's rural areas has accounted for half of the country's total. In terms of domestic sewage treatment, about 8 billion tons of domestic sewage are produced in rural areas of the country every year, and 96% of the villages do not have drainage channels and sewage treatment systems, and domestic sewage is discharged randomly. The wanton discharge of untreated domestic sewage seriously pollutes the rural ecological environment and directly threatens the health of farmers and the economic development of rural areas. [0003] At present, the sewage treatment system in some villages has not been established, and the collec...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the sludge formed after the treatment of rural sewage will contain more organic matter. During the subsequent sludge landfill process, the anaerobic fermentation of organic matter will generate a large amount of gas, resulting in the instability of the sludge and affecting the follow-up treatment. Create trouble

At the same time, the sludge with high organic content has a large volume and weight, resulting in a large amount of sludge produced in the sewage treatment process, which increases the cost of cleaning and transportation

Images