Integrated air-lift loop dynamic membrane bioreactor

Abstract

The invention relates to an integrated air-lift loop dynamic membrane bioreactor, which is characterized in that the bioreactor is in a cylindrical platform shape, and the structure of the bioreactor is divided into an anaerobic regulating pool, an anoxia tank, an air-lift loop dynamic membrane bioreactor and other units; the anaerobic regulating pool has the functions of water quality and quantity regulation, anaerobic hydrolytic acidification of inlet water and sludge volume reduction, and the main body adopts a nitrogen and carbon removal operation mode by the A / O process; the air-lift loop dynamic membrane bioreactor is an air-lift loop aerobic bioreactor in which air at two sides lifts and air at the center reflows, and filter components are is arranged in a central region; and diatomaceous earth and other granular matters are added to form granular sludge so as to form the air-lift loop dynamic membrane bioreactor; and an air lifter is adopted to lift sewage and sludge, and has different functions of isolating oil and scum, exhausting and preventing a great deal of sludge at the bottom from being greatly lifted, and the like. The invention facilitates on-site installation and operation management, has good water inlet quality, stable operation and low cost, and can fully meet the actual requirements of decentralized wastewater treatment in rural areas.

Description

technical field [0001] The invention relates to an integrated air-lift circulation dynamic membrane biological reaction device used for the treatment of scattered domestic sewage in rural areas. Background technique [0002] In recent years, rural drainage projects have been neglected. Most of the rural domestic sewage is discharged to the surrounding environment without any treatment, causing serious pollution of surface and underground water sources in small towns and rural areas. The process of eutrophication has seriously threatened the safety of drinking water in rural areas. Therefore, it is very important to increase the rate of decentralized sewage treatment in villages and towns. [0003] However, my country lacks in-depth and systematic understanding and research on the characteristics and applicable technologies of rural decentralized sewage discharge, and the relevant research lags behind developed countries. At the same time, my country's rural decentralized s...

AI Technical Summary

Problems solved by technology

However, the MBR process also has some disadvantages: ① high cost of membrane modules, high investment costs; ② high operating power costs, complex operation process, maintenance and management requires high technology; ③ membrane modules are prone to concentration polarization, pollution, and clogging , aging and other phenomena

In the absence of a grease trap, it is extremely important to reduce its adverse effects on subsequent reactions and structures through system design; ⑥ The degree of integration is not high

The above problems limit the application of dynamic membrane bioreactors in rural decentralized sewage treatment

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