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IFAS-combined double-chamber MFC landfill leachate treatment system and method

A landfill leachate and treatment system technology, which is applied in the field of sewage treatment and energy recovery, can solve the problems of large footprint and complex installation of MFC wastewater treatment system, so as to reduce the cost of land occupation, improve energy recovery efficiency, and improve the removal of organic matter and the effect of the capacity of nutrients

Pending Publication Date: 2021-11-26
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects of the prior art, the object of the present invention is to provide a dual-chamber MFC landfill leachate treatment system and method combined with IFAS, combining fixed biofilm-activated sludge systems (integrated fixed-film activatedsludge systems, IFAS) and MFC Combined with the cathode chamber of the MFC reactor, the power density and efficiency of the MFC reactor are improved, and the purpose of efficient and stable treatment of landfill leachate is achieved. It aims to solve the problem of complex devices and large footprints in the existing MFC wastewater treatment system.

Method used

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  • IFAS-combined double-chamber MFC landfill leachate treatment system and method
  • IFAS-combined double-chamber MFC landfill leachate treatment system and method

Examples

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Embodiment 1

[0084] In this example, a fixed biofilm-activated sludge process is combined with a microbial fuel cell to obtain an MFC-IFAS system, and this system is used to treat landfill leachate. The specific operation steps are as follows:

[0085] (1) Acclimatization of activated sludge bacteria: inoculate the activated sludge into the same volume of acclimatization medium, and culture it with intermittent aeration at 28°C for one week before it is used in the MFC experiment, so that the bacteria in the activated sludge can adapt to the environment .

[0086] (2) MFC-IFAS system construction: the MFC reactor is made of 6mm thick acrylic glass, see figure 2 , the working volume of the anode chamber 1 is 600mL, and the working volume of the cathode chamber 2 is 800mL. The diaphragm 3b in this embodiment is a carbon felt sheet of 8cm×12cm, which is inserted between the two diaphragm baffles 3a as the anode chamber 1 and the membrane separator 3 that physically separates the cathode cha...

Embodiment 2

[0091] In this example, fixed biofilm-activated sludge is used to couple algae and combine with microbial fuel cell to obtain MFC-IFAS / algae system, and use this system to treat landfill leachate. The specific operation steps are as follows:

[0092] (1) Acclimatization of activated sludge bacteria: inoculate the activated sludge into the same volume of acclimatization medium, and culture it with intermittent aeration at 28°C for one week before it is used in the MFC experiment, so that the bacteria in the activated sludge can adapt to the environment .

[0093] (2) Algae acclimatization: on a clean bench (Bio-II-A, Telstar, Spain), inoculate 40mL of algae into 400mL (v / v ratio 1:10) of sterilized BG11 medium, in 0.5L Algae culture in Erlenmeyer flasks. The Erlenmeyer flasks were cultured for 5 days in a continuous lighting mode (synthetic light) with a light intensity of 1600 lux and a constant room temperature of 28°C. Additionally, air supply (100 mL / min) was used to prom...

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Abstract

The invention belongs to the technical field of sewage treatment and energy recovery, and particularly discloses an IFAS-combined double-chamber MFC landfill leachate treatment system and method. The system comprises an anode chamber, a cathode chamber, a membrane separator and a porous carrier; the anode chamber and the cathode chamber are separated through a membrane separator, an anode is arranged in the anode chamber, a cathode is arranged in the cathode chamber, and the anode is connected with the cathode through a wire via an external resistor; the porous carrier is fixedly arranged in the cathode chamber, an active biological membrane is attached to the porous carrier, and the active biological membrane comprises microbial flora in activated sludge. The IFAS and the microbial fuel cell are combined, the two electrode chambers of the MFC are effectively utilized, the cathode chamber is provided with suspended activated sludge and an attached active biological membrane and shows excellent electrochemical behavior and nitrogen removal capacity, the wastewater treatment process of the MFC is further improved, and the application value is high.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and energy recovery, and more specifically relates to a dual-chamber MFC landfill leachate treatment system and method combined with IFAS. Background technique [0002] With the improvement of national living standards, the output of domestic waste is increasing. Due to the low cost, sanitary landfill is usually used to treat domestic waste. However, the landfill leachate produced during the landfill process poses a major threat to surface water bodies and groundwater. Potential impact on environmental sustainability. Landfill leachate treatment methods mainly include physical and chemical methods and biological methods: physical and chemical methods mainly include activated carbon adsorption, chemical precipitation, ion exchange, membrane dialysis, chemical redox, etc. Physical and chemical treatment is not affected by changes in water quality and quantity, and the effluent quality is re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/30C02F3/32C02F3/34C02F103/06C02F101/38C02F101/16
CPCC02F3/005C02F3/303C02F3/305C02F3/325C02F3/34C02F2101/16C02F2101/38C02F2103/06
Inventor 刘冰川艾博涵王小赫王秋帏徐敏马玎珣张曦月侯慧杰胡敬平杨家宽
Owner HUAZHONG UNIV OF SCI & TECH
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