Co-treatment method for blue-green algae in Taihu lake, sludge of wastewater plant and kitchen waste

Abstract

The invention discloses a co-treatment method for a blue-green algae in a Taihu lake, a sludge of a wastewater plant and a kitchen waste, and belongs to the technical field of environmental protectionand renewable energy source treatment. The method comprises the following steps of pretreating a source of the blue-green algae in the Taihu lake; pretreating a source of the kitchen waste; carryingout a pyrohydrolysis decomposition process on the sludge of the wastewater plant; cooperatively carrying out thermophilic digestion on the sludge of the wastewater plant, the pretreated blue-green algae in the Taihu lake and the pretreated kitchen waste; dehydrating and squeezing a biogas residue; drying to obtain a finished product. The co-treatment method for the blue-green algae in the Taihu lake, the sludge of the wastewater plant and the kitchen waste provided by the invention has the advantages that through a comprehensive treatment processing comprising the steps of pretreating the source of the blue-green algae in the Taihu lake, carrying out the pyrohydrolysis decomposition process on the sludge of the wastewater plant, cooperatively carrying out thermophilic digestion on the sludge of the wastewater plant, the pretreated blue-green algae in the Taihu lake and the pretreated kitchen waste, dehydrating through a biogas residue dehydrator, directly squeezing through a high-pressure squeezer, and drying through solar energy, not only can stabilization, harmlessness and reduction of the blue-green algae in the Taihu lake, the sludge of the wastewater plant and the kitchen waste be realized, but also the waste is turned into wealth, and available methane, landscaping soil and woodland soil can be produced.

Description

technical field [0001] The invention relates to the technical field of environmental protection and renewable energy treatment, in particular to a method for synergistic treatment of Taihu Lake cyanobacteria, sewage plant sludge and kitchen waste. Background technique [0002] Taihu Lake cyanobacteria (blue-green algae, cyanobacteria), sewage plant sludge and kitchen waste co-processing method As the organic waste of the Great Lakes and cities, its composition is complex, easy to rot and deteriorate, and it is extremely harmful to the environment and human body. Therefore, whether Taihu Lake cyanobacteria (blue-green algae, cyanobacteria), sewage plant sludge and food waste collaborative treatment methods can be properly disposed of is directly related to the environmental safety of the Great Lakes and cities and the health of the people. With the rapid development of my country's great lakes and cities, the production of cyanobacteria (blue-green algae, cyanobacteria), sewa...

AI Technical Summary

Problems solved by technology

The application of anaerobic digestion technology in my country began in the 1930s, but it did not begin to develop steadily until the late 1970s. At present, there are only about 10 anaerobic digestion processes in my country, which are less than 2% of the national cities. Taihu Lake blue-green algae (blue-green algae, cyanobacteria), sewage plant sludge and low-quality organic matter from kitchen waste are converted into high-quality energy, but traditional anaerobic digestion is due to Taihu Lake blue-green algae (blue-green algae, cyanobacteria), sewage plant sewage The technical level of mud and food waste is relatively low, the biochemical performance is poor, and there is a problem of low biogas production

[0004] The name is a comprehensive waste treatment process and many other patents. The above-mentioned documents report Taihu Lake cyanobacteria (blue-green algae, cyanobacteria), sewage plant sludge and kitchen waste treatment processes and equipment, and report Taihu Lake cyanobacteria (blue-green algae , cyanobacteria), sewage plant sludge and food waste collection and disposal information platform, reported Taihu cyanobacteria (blue-green algae, cyanobacteria), sewage plant sludge and food waste disposal processes including pretreatment, sorting , anaerobic fermentation, pressure filtration and other processes, the above-mentioned various documents all mention different treatment processes, but the specific treatment process is not appropriate, not only easy to secondary air pollution, large emissions, but also high cost of treatment, To this end, we propose a co-processing method of cyanobacteria in Taihu Lake, sewage plant sludge and food waste

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