Method and device for recycling domestic sewage

Abstract

The invention relates to a domestic sewage recycling treatment method and device, and aims to achieve the purpose that the provided method and device have the characteristics of being high in recycling utilization ratio, relatively high in intelligent degree and convenient for remote management. The technical scheme is that the domestic sewage recycling treatment method is conducted according to the following steps: 1) collecting sediment and clarifying, and outputting supernatant and the sediment; 2) conducting acidation-hydrolysis and anaerobic fermentation on the supernatant in sequence; 3) collecting methane obtained in the step 2), and conducting desulfuration, cooling and storage in sequence. The domestic sewage recycling treatment device comprises a remote controller (1), and is characterized in that (1), the device comprises a collecting and clarifying tank communicated with a domestic sewage collecting pipe; (2) air pipes are connected in parallel to communicate a desulfurization tower, a cooling tower and a methane storing cabinet in sequence; 3) a supernatant anerobic fermentation tank is communicated with an organic fertilizer processing tank for producing biogas slurry organic fertilizer and an automatic filling machine in sequence; 4) a control valve is configured at each outlet, and a pump controlled by the remote controller is configured in each sediment pipeline.

Description

technical field [0001] The invention relates to an intelligent domestic sewage treatment device and a treatment method, in particular to a device and a method for treating domestic sewage by adopting anaerobic fermentation technology. Background technique [0002] At present, problems such as shortage of water resources, serious water pollution, and deterioration of water ecological environment in my country have become increasingly prominent, and have become the main bottleneck restricting the sustainable development of the economy and society. Domestic sewage is one of the main pollution sources of water body, and the common treatment method is biochemical method. Anaerobic fermentation technology is one of the biochemical methods. This technology can not only effectively remove organic matter in wastewater, but also generate clean biogas energy. It is especially suitable for the treatment of distributed domestic sewage. In addition to producing biogas, this technology al...

AI Technical Summary

Problems solved by technology

First, due to the uneven water quality and quantity of domestic sewage, the sewage treatment is not complete when the existing anaerobic fermentation technology treats domestic sewage; second, due to the excessive water content of the fermentation substrate during the fermentation process, the maintenance system consumes a lot of energy , especially in winter; third, due to the construction quality and long service life of the equipment, biogas leakage accidents or poisoning accidents due to desulfurization failure occur from time to time; fourth, because anaerobic fermentation is an intermittent sewage treatment method, fillers, Processes such as discharging, inoculation, heating and temperature control require relatively high skills for operators. Although there are automatic filling, discharging devices and corresponding heating and temperature control methods, due to the low degree of automation and accuracy, accidents often occur. Moreover, it is inconvenient for remote operation and management; fifth, the resource utilization of existing biogas residues and biogas slurry is insufficient, and it is too simple; especially biogas slurry, most of which are collected and sent to sewage plants for secondary treatment, or through artificial wetlands, etc. However, biogas residues are directly used as organic fertilizers, which have disadvantages such as insufficient fertilizer efficiency and safety risks.

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