Aerobic repairing system and repairing method of solid waste area

Abstract

The invention discloses an aerobic repairing system and a repairing method of a solid waste area. The system comprises a gas injection air extractor, a liquid injection liquid extraction device, a detection device, a control device, a gas injection well, a gas extraction well, a liquid injection well, a liquid injection tube, a liquid extraction well and a detection well and the like, wherein the gas injection well, the gas extraction well, the liquid injection well, the liquid injection tube, the liquid extraction well and the detection well are connected with the gas injection air extractor, the liquid injection liquid extraction device, the detection device and the control device and arranged in the solid waste area. According to the invention, a method for comprehensively adjusting and controlling the operational parameters, such as gas injection amount, gas extraction amount, liquid injection amount, liquid extraction amount, temperature and humidity and the like is adopted, thus an aerobic reaction in the solid waste area is ensured to be carried out at an optimum condition, the organic matters and pollutants in the solid waste area are transferred, absorbed, degraded or transformed, and the contents and concentrations of the organic matters and pollutants are lowered to an acceptable level, thereby realizing the target of comprehensive ecological improvement.

Description

Technical field [0001] The invention relates to the field of solid waste treatment and contaminated site restoration, in particular to a solid waste site aerobic restoration system capable of real-time online detection and control of temperature, humidity, gas content, ground subsidence and slope displacement in the solid waste site And use it to repair contaminated sites. Background technique [0002] According to statistics from the National Environmental Protection Agency, there are about 150 million acres of polluted arable land nationwide, 32.5 million acres of arable land contaminated by sewage irrigation, and 2 million acres of land occupied and destroyed by solid waste, which together account for more than 1 / 10 of the total arable land. The annual economic loss caused by soil pollution amounts to 20 billion yuan. [0003] According to the statistics of the Ministry of Construction, the amount of urban domestic waste generated in my country in 2005 was 156 million tons. Am...

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Problems solved by technology

[0009] When the existing aerobic repair methods are applied to design and construction, some only design gas injection devices and gas injection wells, without active gas extraction devices; some gas injection wells are set without considering the depth of solid waste pollution, and only inject gas at the bottom position, which is inefficient; Some are equipped with gas injection and air extraction devices, but no liquid injection well pipes are installed to ensure the efficient aerobic reaction; The supply cannot meet the demand, and no clear temperature and humidity control indicators have been set. As a result, the treatment and restoration process is carried out under vague and inefficient conditions. The treatment and restoration effect is poor, and secondary pollution is easy to occur, and sometimes explosions and fires may occur , landslides and other dangerous disasters

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