Device and process for processing high-salt non-biodegradable toxic industrial waste water

Abstract

The invention discloses a device and process for processing high-salt non-biodegradable toxic industrial waste water. An A/O processing pool comprises an A section and an O section; a regulation tank, a micro-electrolytic tank, a coagulation sedimentation tank, a halotolerant bacteria processing tank, an A/O processing tank, a secondary sedimentation tank, a filtering tank are sequentially connected; a sludge concentration tank is connected with the coagulation sedimentation tank, the secondary sedimentation tank and a sludge dewatering machine; and a halotolerant bacteria culture tank is connected with the halotolerant bacteria processing tank. The high-salt non-biodegradable toxic industrial waste water enters the regulation tank for regulation of water quality and quantity, and most of the non-biodegradable organisms and toxic substances are removed through the micro-electrolytic tank and coagulation sedimentation tank; the supernate of the coagulation sedimentation tank enters the halotolerant bacteria processing tank which can improve the halotolerancy of biochemical sludge; the output water of the halotolerant bacteria processing tank is subjected to biochemical processing of the A/O processing tank, and the sludge is separated by the secondary sedimentation tank; and the supernate is filtered by the filtering tank, and the output water meets the standard and is discharged. The device and process disclosed by the invention have a good processing effect and low operation cost.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a treatment device and process for treating high-salt, difficult-to-biodegrade and toxic industrial wastewater. Background technique [0002] Industrial wastewater such as medicine, chemical industry, printing and dyeing dyes often contains difficult biodegradable and toxic components, so it is not feasible to directly use biochemical methods. The current pretreatment methods before biochemistry include iron-carbon micro-electrolysis, electrocatalytic oxidation or Fenton oxidation, but Iron-carbon micro-electrolysis is easy to agglomerate, and the operating cost of electrocatalytic oxidation or Fenton oxidation is high. Therefore, how to strengthen the pretreatment before biochemistry is very important. At the same time, organic wastewater with high salinity is also produced in the process of industrial production, and the salt concentration of comprehensive wastewater oft...

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Problems solved by technology

At present, only iron-carbon micro-electrolysis, electrocatalytic oxidation or

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