A2/O water treatment system and method

Abstract

The invention provides an A2 / O water treatment system and method. The system for an A2 / O water treatment process comprises an anaerobic tank, an anoxic tank, a sludge concentration tank, a microbial fuel cell and an aerobic tank, wherein the anaerobic tank is used for carrying out anaerobic fermentation on sewage; the anoxic tank is connected with the anaerobic tank; the sludge concentration tank is communicated with one anoxic tank; the microbial fuel cell is arranged in the sludge concentration tank; the aerobic tank is communicated with the sludge concentration tank. According to the A2 / O water treatment system and method, provided by the invention, the microbial fuel cell is added so that the cost of reflowing active sludge in the sludge can be reduced and the power consumption is reduced by one half; produced solid substances needing to be treated are reduced by 50 percent to 90 percent.

Description

technical field [0001] The invention relates to an A2 / O water treatment system and method, and also relates to an A2 / O water treatment method, belonging to the field of water treatment. Background technique [0002] In recent years, the discharge of rural domestic sewage in my country has increased dramatically, and the construction of sewage collection systems and supporting treatment facilities is relatively lagging behind. With the development of the country's new rural construction, many villages and towns have built small and medium-sized sewage treatment stations and put them into use, gradually improving the rural ecological environment in our country. [0003] However, some problems gradually appeared in the later operation of many small and medium-sized sewage treatment stations, such as: [0004] 1. The operating cost of sewage treatment facilities is high. The operating cost is mainly composed of early equipment maintenance, power consumption and labor managemen...

AI Technical Summary

Problems solved by technology

[0004] 1. The operating cost of sewage treatment facilities is high

The operating cost is mainly composed of early equipment maintenance, power consumption and labor management costs. The operation of sewage treatment equipment increases the financial expenditure of the village

[0005] 2. No power treatment facilities, such as natural treatment such as artificial wetlands or ecological ponds

Although there is no energy consumption, the removal rate of pollutants is as low as 30-50%, and the effect is even worse in winter when the temperature is low. Therefore, the application of micro-power sewage treatment equipment and devices is currently being promoted.

[0006] 3. The characteristics of rural sewage treatment projects are that the towns are remote, the distances between treatment facilities are long and scattered, the operation status of equipment or problems cannot be checked and found in time, and it takes a long time for personnel to arrive at the site, and the efficiency is low, and the increase in personnel will inevitably increase Employment cost

[0009] However, the operating cost of the A2 / O process is higher than that of the ordinary activated sludge process, and the operation and management requirements are high, so how to reduce the operating cost is even more important

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