Coupling anaerobic sludge acidogenesis mud-film two-phase composite A/A/O system and technology

Abstract

The invention discloses a coupling anaerobic sludge acidogenesis mud-film two-phase composite A / A / O system and technology. The system comprises an anaerobic sludge acidogenesis subsystem and a Hybrid-A / A / O subsystem. The anaerobic sludge acidogenesis subsystem comprises a sludge thickening tank, an anaerobic sludge acidogenesis tower, a medicine adding mixing tank, a sludge filter press and a liquid storage tank. The Hybrid-A / A / O subsystem comprises an anaerobic tank, an anoxia tank, an aerobic tank and a sedimentation tank, wherein biological stuffing in the anaerobic tank is solid biological stuffing; biological stuffing in the aerobic tank is suspended biological stuffing; the liquid storage tank is communicated with the anaerobic tank; the sedimentation tank is communicated with the sludge concentration tank through a pipeline. According to the coupling anaerobic sludge acidogenesis mud-film two-phase composite A / A / O system and technology, carbon source distribution and complementation, sludge reduction and nitrogen and phosphorus removal performance are intensified and organically combined, the problems that the outlet water quality is not stable, the excess sludge yield is large and the processing cost is high are solved, and the outlet water obtained after low-carbon-source urban sewage treatment stably reaches the emission standard.

Description

technical field [0001] The present invention belongs to the sewage and sludge treatment system and process, especially a mud film two-phase composite A / A / O (Anaerobic-Anoxic-Aerobic, anaerobic-anoxic-aerobic, anaerobic-anoxic-aerobic) coupling sludge anaerobic acid production Aerobic method) system and process. Background technique [0002] Urban sewage treatment plants have played an extremely important role in controlling water pollution, improving water environment, and promoting the sustainable development of China's economy. However, as the environmental requirements are getting higher and higher, the standards of urban water pollution control are becoming more and more stringent, and urban sewage treatment plants are also facing challenges. [0003] Pollutant discharge standards for urban sewage treatment plants are stricter, especially for the removal of nitrogen, phosphorus and other nutrients. Nitrogen and phosphorus cannot reach the standard (GB18918-2002) stably...

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Problems solved by technology

[0008] In order to solve the above technical problems, the present invention provides a low-carbon source urban sewage treatment system and process, so as to solve the problems of unstable effluent quality, large excess sludge output and high treatment costs faced by sewage plants.

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