Aquaculture system of biomass cogeneration

Abstract

The invention relates to the technical field of breeding and comprehensive utilization of resources and particularly relates to an aquaculture system of biomass cogeneration. The aquaculture system comprises an indoor culture room, a culture wastewater thermal power station, a biogas liquid and biogas residue treatment device and a culture water recovery treatment device, wherein the culture wastewater thermal power station, the biogas liquid and biogas residue treatment device and the culture water recovery treatment device are arranged around the indoor culture room; a lighting device, a temperature adjuster and a plurality of culture units are arranged in the indoor culture room; the culture wastewater thermal power station comprises a control device, a culture wastewater buffer pool, abiogas fermentation tank, a methane extraction device, a methanol synthesizer, a methanol-water hydrogen production reformer and a fuel battery, wherein the methane extraction device is used for separating out methane from biogas, and the methanol synthesizer is used for synthesizing methanol from the methane; and the methanol-water hydrogen production reformer is provided with an electric heaterfor supplying a temperature required for a methanol-water reforming hydrogen production reaction. According to the aquaculture system of biomass cogeneration, the culture wastewater thermal power station achieves the efficient conversion of heat energy and electric energy in situ by using culture wastewater and supplies power and heat to the system, and biomass cogeneration and the comprehensiveutilization of energy are achieved.

Description

technical field [0001] The invention relates to the technical field of breeding and resource comprehensive utilization, in particular to an aquaculture system for combined heat and power generation of biomass. Background technique [0002] A large amount of aquaculture wastewater is produced in the process of aquaculture, which contains various nitrogen, phosphorus and other organic suspended matter, excrement, etc., which has adverse effects on the aquaculture and water environment. The existing solutions are mainly to change water and add chemical oxidants Or micro-ecological bacteria agent, industrial water purification, ecosystem compensation and other methods. However, water change is to directly discharge part of the aquaculture wastewater and then replenish some fresh clean water to improve the physical, chemical and biological conditions of the water body, but the discharged wastewater causes environmental pollution, and the amount of clean water is large; regular ad...

AI Technical Summary

Problems solved by technology

However, water change is to directly discharge part of the aquaculture wastewater and then replenish some fresh clean water to improve the physical, chemical and biological conditions of the water body, but the discharged wastewater causes environmental pollution, and the amount of clean water is large; regular addition of chemical oxidants The disadvantage is that it destroys the ecological balance of the aquaculture water while oxidizing and detoxifying, and the operating cost is high; the disadvantage of regular dosing of probiotics is that it is easy to cause large fluctuations in the physical, chemical and biological indicators of the water body, and the operating cost is high; The equipment cost of industrial water purification treatment method is high, and the operation cost is high

The main reasons for the ecological system compensation method are problems such as large land occupation and difficult operation and management, which affect its application to a certain extent.

Therefore, the treatment efficiency of these existing aquaculture wastewater is low, the cost is high, and there is a lack of comprehensive treatment

On the other hand, the aquaculture process requires high temperature and light conditions. At present, it mainly relies on external power stations for power supply. However, this existing high-voltage centralized power generation is difficult to supply power to remote areas with inconvenient transportation, thus limiting the use of breeding sites. choose

In addition, there is also a method of using biogas to generate electricity in the prior art, but the existing biogas power generation system uses biogas combustion to generate thermal energy, that is, first converts thermal energy into mechanical energy, and then converts mechanical energy into electrical energy. The secondary conversion efficiency Too low to be widely used

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