Method and system for producing hydrogen from landfill leachate
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A landfill leachate and hydrogen technology, which is applied in chemical instruments and methods, contaminated groundwater/leachate treatment, water/sludge/sewage treatment, etc., can solve hydrogen waste and other problems, and achieve low operating costs and engineering investment low cost effect
Pending Publication Date: 2021-08-03
DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP
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[0008] In view of this, in order to solve the above-mentioned problems existing in the prior art, the object of the present invention is to provide a method and system for producing hydrogen by using landfill leachate to achieve the use of lan
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[0056] Example 1
[0057] The current membrane concentrate treatment process is mainly a variety of evaporation processes, such as mechanical steam replenishment (MVR), immersion fuel; MVR operating costs in 80-120 yuan / m3, during operation, frequent cleaning, can not be stably operated The operating cost of immersion combustion is 140-260 yuan / m3, and the system is high, construction, high construction, cost-effective cost, and these evaporation processes are easily desirable to process hybrid hazardous waste.
[0058] In view of the defects of the above film concentrate treatment process, a method of hydrogen-filled hydrogen permeation liquid is provided in this example, which is an example of a diaphragm reverse osmosis membrane concentration, and other industrial wastewater (eg, a liquid permeable. Compared with the reverse osmosis membrane concentrate treatment technology, there is mainly in investment, low operating cost, high economic efficiency, and durability. The met...
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[0079] Example 2
[0080] In the present invention, there is also provided a system that utilizes waste leachate hydrogen production, in the present embodiment, the system is operated, and the raw material is a permeable membrane concentrate. For convenience of transportation and flexible, the system can assemble design according to the mating module. Specifically, such as figure 2 As shown, the system includes:
[0081] 1 reverse osmosis device, the inlet end of the reverse osmosis device is accessed into raw water;
[0082] 2 Ozone advanced oxidation device, the ozone advanced oxidation device is connected to the outlet end of the reverse osmosis device; the concentrate is received; under the action of the ozone advanced oxidation device, the wastewater suspension COD after ozone-high oxidation is controlled below 100 mg / L .
[0083] 3 Electro-adsorption device, the electrical adsorption device is connected to the outlet end of the ozone advanced oxidation device, and the elec...
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Abstract
The invention discloses a method and a system for producing hydrogen from landfill leachate, and belongs to the technical field of hydrogen production. The method comprises the steps that concentrated liquor produced in a reverse osmosis process flows into a catalytic ozonation process; clear brine generated in the ozone catalytic oxidation process is sent to the electro-adsorption process, strong brine generated in the electro-adsorption process is sent to the electrolysis process, and light brine generated in the electro-adsorption process is returned to the reverse osmosis process; light salt brine and chlorine flow out of the anode of the electrolysis process, and finished alkali and hydrogen flow out of the cathode of the electrolysis process; chlorine and hydrogen are respectively fed into the chlorine treatment process and the hydrogen treatment process to respectively generate finished chlorine and finished hydrogen which reach the standard, so that the purposes of preparing hydrogen for a fuel cell and co-producing a disinfectant by utilizing the landfill leachate membrane concentrated solution are achieved, and the problem of hydrogen waste generated by a traditional brine electrolysis technology is solved.
Description
technical field [0001] The invention belongs to the technical field of hydrogen production, and in particular relates to a method and system for producing hydrogen by utilizing landfill leachate. Background technique [0002] High brine refers to wastewater whose total salt mass fraction calculated based on NaCl content is greater than or equal to 1%. This type of wastewater not only contains certain organic pollutants, but also contains a large number of soluble inorganic salt ions such as calcium, magnesium, sodium, chloride and sulfate. This type of wastewater mainly comes from a wide range of sources, such as: seawater desalination, power plant desulfurization wastewater, chemical production, landfill leachate membrane concentrate, etc. [0003] In existing schemes, high brine refers to a concentrated brine solution that is difficult to biochemically treat with a mass fraction of total dissolved solids (TDS) greater than 8% after the standard discharge water is recovered...
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