Novel integrated sewage treatment device and method

Abstract

The invention relates to the technical field of water treatment devices, in particular to and discloses a novel integrated sewage treatment device, which comprises a pre-filtration zone, a dosing room, an anaerobic zone, an anoxic zone, an aerobic zone, and a membrane treatment device, wherein the concentric outer cylindrical wall, inner cylindrical wall and the device bottom are connected and enclosed to form the anoxic zone, and the inner cylindrical wall and the device bottom are connected and enclosed to form the aerobic zone; the inner cylindrical wall is vertically provided with symmetric reflux conduction ports, and an aeration device is arranged in the aerobic zone; the membrane treatment device is arranged in the aerobic zone, and a water inlet of the anoxic zone is formed in thelower part of the anoxic zone, and water is introduced in the circumferential direction; the outer cylindrical wall and the inner cylindrical wall are higher than the operating liquid level. The invention also discloses a corresponding method. The novel integrated sewage treatment device and method provided by the invention do not need a stirring reflux device, and has the advantages of good reflux effect, simple and compact structure, small occupied area, good treatment effect, stable water discharge, low energy consumption, convenient maintenance, excellent impact resistance and the like.

Description

technical field [0001] The invention relates to the technical field of water treatment equipment, in particular to a novel integrated sewage treatment equipment and method. Background technique [0002] In recent years, with the continuous improvement of my country's economic development and people's living standards, the problem of rural water environment pollution has gradually become an important factor restricting the construction of new urbanization. In April 2015, the "Water Pollution Prevention and Control Action Plan" or "Water Ten Measures" was issued, which called for promoting the prevention and control of agricultural and rural pollution and speeding up the comprehensive improvement of the rural environment. It is predicted that in 2016, the rural sewage treatment industry can form an output value of more than 40 billion, and the output value can increase to 84 billion in 2020, and this figure can reach 130 billion in 2025. However, under the huge market demand, ...

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Problems solved by technology

At present, my country has a rural population of 674 million, distributed in more than 2.5 million natural villages, and produces more than 30 million tons of domestic sewage every day, but the treatment rate of these sewage is less than 10%, and most of them are discharged into the natural environment without treatment

Because of the unbalanced distribution of sewage in villages and towns and the small-scale treatment of a single treatment point, the investment cost of centralized treatment on the pipeline network is too high. Currently, decentralized integrated equipment is mostly used for treatment.

The existing integrated equipment is usually complex in structure, and the long process route leads to a decrease in the reliability of long-term stable operation. Therefore, it is a requirement for the development of the industry to develop efficient and reliable small-scale decentralized sewage treatment equipment. For example, the patent application number 200920098947.5 provides a In the MBR integrated sewage treatment equipment with nitrogen and phosphorus removal functions, the anaerobic zone is equipped with a stirrer and a return pump at the same time, the structure is complex, the investment cost increases, it is uneconomical, and the maintenance workload increases

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