Urban community sewage treatment station with combined heat and power effect

Abstract

The invention relates to the technical field of municipal sewage treatment, in particular to a municipal community sewage treatment station with a combined heat and power effect. The municipal community sewage treatment station comprises a sewage treatment module, a feces treatment module and a thermoelectric control module, wherein the sewage treatment module a grille tank, a MBR biofilm reactorand a clean water collection tank, the feces treatment module includes a CSTR anaerobic fermentation tank, a methane extraction device, and a methanol synthesis device, and the thermoelectric controlmodule includes a reformer for hydrogen production from methanol and water, a heat exchanger, a fuel cell, a high-temperature residual gas collection device and a control device. The municipal community sewage treatment station integrates power supply, heat supply and sewage treatment in the community, the sewage is treated in the neighborhood of the community, the efficient conversion and utilization of electric energy and heat energy are realized, the transportation cost and the burden of centralized treatment of urban sewage can be reduced, and the municipal community sewage treatment station is not limited by the site.

Description

technical field [0001] The invention relates to the technical field of urban sewage treatment, in particular to urban community sewage treatment stations for combined heat and power supply. Background technique [0002] The sewage produced in the process of human life, mainly feces and washing sewage, is one of the main pollution sources of water bodies. With the development of urbanization and the popularization of urban sewage pipe network, more and more cities adopt the method of pretreatment of feces by feces treatment stations, and then combined with urban sewage treatment plants or garbage sanitary landfills, that is, treatment The final supernatant enters the sewage treatment system, and the fecal residue enters the sludge disposal system or is landfilled together with the garbage. However, the existing centralized treatment methods for urban domestic sewage still have the following problems to be solved urgently: (1) Feces in various septic tanks in the city are req...

AI Technical Summary

Problems solved by technology

However, the existing centralized treatment methods for urban domestic sewage still have the following problems to be solved urgently: (1) Feces in various septic tanks in the city are required to be cleaned regularly by fecal trucks and transported to the feces treatment station for pretreatment, and then The pretreated feces are transported to sludge treatment plants or landfills for treatment. During this process, the cost of collecting, cleaning and transporting feces is very high, and septic tanks and feces treatment stations produce a large amount of harmful odor , the working environment is poor; (2) Although there are sewage treatment plants in cities above the prefecture level, the coverage is insufficient, resulting in a low urban sewage treatment rate. With the increase of domestic sewage year by year, the sewage treatment capacity of most cities cannot meet the needs Actual demand, heavy operating load; (3) The operation of existing feces and sewage treatment equipment mainly relies on electric energy, and its energy consumption is very high, and the current power supply mode is a centralized high-voltage transmission connected to the urban power grid, so sewage treatment plants and The distribution of feces pretreatment stations is restricted by region; (4) The way of treated feces and landfill will also pollute the living environment such as underground water sources, which is not conducive to sustainable development

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