Elution repairing device and repairing method of arsenic polluted soil and wastes

Abstract

The invention provides an elution repairing device and a repairing method of arsenic polluted soil and wastes. The elution repairing device is formed by a spraying device, an eluting groove, a material unloading switch, a filtering anti-blocking device, a waste liquid sampling opening, an eluting waste liquid treating tank, an arsenic adsorption device, an arsenic adsorption material replacing switch, an eluting filtering liquid storage tank, a first liquid gauge, a first electric pump, an eluting agent storing tank, a dry powder hopper, a material adding motor, a level meter, a first solenoid valve, a tap water inlet pipeline, an agitating device, a second liquid gauge, a solution concentration detection device, a second solenoid valve, a second electric pump, a flow meter, an eluting agent conveying pipeline, an alarm, a touch screen operation system, a master switch and an electric control cabinet. According to the elution repairing device and repairing method of the arsenic polluted soil and the wastes, an eluting system, an eluting waste liquid recycling system and a control system are organically combined together to form a set of a dislocated elution repairing device with a low secondary pollution risk; the high-concentration arsenic polluted soil and the wastes can be rapidly and efficiently repaired; and meanwhile, low emission is realized, and the elution repairing device and repairing method are energy-saving, efficient, safe and environment-friendly.

Description

technical field [0001] The invention relates to a leaching repair technology for arsenic-contaminated soil and waste (tailing slag, bottom mud) and waste liquid recovery and treatment technology, in particular to a leaching repair device and repair method for arsenic-contaminated soil and waste, belonging to the environment In the field of engineering technology, the integration of soil leaching and leachate treatment, recycling, and recycling can be widely used in the treatment of various arsenic-containing wastes generated in soil leaching, chemical industry, metallurgy and other industries. Background technique [0002] Due to the widespread existence and use of arsenic, the arsenic pollution situation in many countries is serious. The soil of many farmlands and orchards in New Jersey, USA has been seriously polluted by arsenic. According to statistics, between 1900 and 1980, about 6,804 tons of arsenic entered the soil in the form of pesticides. Belgium enters the soil f...

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Problems solved by technology

[0004] According to the available data, the current leaching repair device for heavy metal contaminated soil and waste and the treatment method of leaching waste liquid have the following deficiencies: (1) Both soil and waste need to be screened, stirred and other pre-treatment processes, seriously Physicochemical properties of damaged soil

(2) The design of the device is complex, the cost and energy consumption are too high, and the practicability is not strong

(3) The removal effect of pollutants is not good, and the waste leaching liquid produced is not recycled and reused, which will cause secondary pollution to the environment

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