Integrated wastewater biological treatment reactor

Abstract

The invention discloses an integrated wastewater biological treatment reactor which solves the problems of large occupied area, high investment, high operating cost and the like in the existing wastewater biological treatment facility. The technical scheme is as follows: the integrated wastewater biological treatment reactor comprises an outer cylinder with an open top surface and an inner cylinder, wherein the outer cylinder is uniformly divided by a plurality of radially arranged overflow partitions into a plurality of outer aerobic regions and outer anoxic regions which are arranged in a staggered mode; the outer cylinder wall on the bottom of each outer aerobic region is provided with an outer aeration head, a sludge inlet and a water inlet; the inner cylinder wall on the bottom of each outer anoxic region is provided with an inner cylinder water inlet; the inner cylinder is divided by an annular overflow plate into an inner aerobic region as an inner cylinder inner layer and an inner anoxic region as an inner cylinder outer layer; the bottom of the inner aerobic region is provided with an inner aeration head; and the inner cylinder wall on the top of the inner anoxic region is provided with a water outlet pipe which is communicated with the outside. The integrated wastewater biological treatment reactor has the advantages of simple and compact structure, reliable operation, small occupied area, material saving, low maintenance quantity and low investment cost.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to an integrated waste water biological treatment reactor. Background technique [0002] The existing wastewater biological treatment process mostly adopts a single-function biological reaction tank for series combination, especially for difficult-to-treat organic wastewater, such as coking wastewater, and its biological treatment has developed from the initial simple activated sludge treatment process to the current one. Multi-stage aerobic-anoxic / anaerobic treatment process. With the extension of the coking wastewater biological treatment process route, the residence time of coking wastewater has been extended from more than 20 hours in the original simple activated sludge method to more than 80 hours in the current treatment process, and some even nearly 200 hours. Such a long treatment process route leads to the following problems in the water treatment process: [0003] (...

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Problems solved by technology

[0003] (1) The process is long, the equipment is large, the facilities occupy a large area, and the investment is large;

[0004] (2) The existing coking wastewater biological treatment system has a poor removal effect on total nitrogen, and carbon sources need to be supplemented in the denitrification unit, resulting in high operating costs;

[0005] (3) For the coking wastewater and domestic sewage in the coking area with low COD and low C / N, the existing treatment technology cannot be started and operated normally due to the constraints of insufficient carbon sources;

[0006] (4) The existing coking wastewater biological treatment system has a large amount of sludge and a large consumption of alkali sources;

[0007] (5) The existing coking wastewater biological treatment facilities are poorly sealed, the water surface area exposed to the atmospheric environment is large, the VOC volatilization of the water body is large, and the degree of air pollution is high;

[0008] ⑹The existing coking wastewater biological treatment technology has a long process route and a long residence time of coking wastewater, which is inconvenient to operate, control and manage;

[0009] ⑺The existing coking wastewater biological treatment facilities have a large maintenance workload and high maintenance costs;

[0010] ⑻ The existing coking wastewater biological treatment facilities have long pipelines and many contacts, and the phenomena of running, popping, dripping and leaking are serious

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