Small and medium-sized continuously-enhanced short-process low-energy-consumption decontamination system

Abstract

The invention discloses a small and medium-sized continuously-enhanced short-process low-energy-consumption decontamination system comprising processes of first-stage A / O, second-stage A / O, disinfection and sludge drying. Compared with an existing decontamination system, the decontamination system disclosed by the invention has relative large changes in structures, processes, application and utility range. The decontamination system comprises the following processes: performing pre-treatment (grille tank-adjustment grit chamber) on sewage to remove scums, performing dephosphorization, nitrification and bio-film reaction on a first-stage A / O part (anaerobic tank-first-stage biological contact oxidation tank), performing denitrification and bio-film reaction on a second-stage A / O part (anoxic tank-second-stage biological contact oxidation tank), and finally precipitating, disinfecting and discharging on standards, wherein sludge is discharged by virtue of unpowered hydrostatic pressure. The system disclosed by the invention is small in floor area, low in investment, less in running management cost, simple in maintenance and strong in impact load bearing capacity, can adopt modular construction, is short in construction period, and reliable in engineering quality; and the effluent is stable, and can exceed the first-grade standard B of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002).

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a medium-sized, continuous, powerful, short-process, low-energy decontamination system. Background technique [0002] The Ministry of Housing and Urban-Rural Development of the People's Republic of China compiled technical guidelines for rural domestic sewage treatment in Northeast China, North China, Southeast China, Central South China, Southwest China, Northwest China and other regions (trial implementation), and promulgated the "Regarding the Printing and Distribution of Rural Domestic Sewage in Sub-regions" on September 21, 2010. "Notice on Handling Technical Guidelines" (Jiancun [2010] No. 149) document. The technical guide guides the treatment technologies of small and medium-sized sewage treatment plants suitable for the northeast, north, southeast, south-central, southwest and northwest regions. [0003] "Urban Sewage Treatment and Pollution Prevention Technology...

AI Technical Summary

Problems solved by technology

For example, the artificial wetland or artificial rapid infiltration process is greatly affected by climate temperature regulation, which is prone to clogging, low impact load resistance, and poor nitrogen and phosphorus removal effects; oxidation ditch and SBR method are difficult to control; after long-term operation, treatment The water is farther and farther away from the standard; high energy consumption; long construction period; difficult to guarantee the quality of the project and other serious defects

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