Three-dimensional industrial organic wastewater treatment method capable of meeting ground surface IV emission standards

Abstract

The invention provides a three-dimensional industrial organic wastewater treatment method capable of meeting ground surface IV emission standards. The method comprises the following steps: on a groundlayer, adding a carbon source to industrial organic wastewaters, performing stirring and dissolving, and then adding hydrochloric acid to adjust the pH to 7-9, and performing biochemical treatments to remove ammonia nitrogen and organic matters in the industrial organic wastewaters; on an intermediate layer, lifting the industrial organic wastewaters after removing ammonia nitrogen and organic matters to the intermediate layer by a lifting pump, adding sulfuric acid to adjust the pH to 2-3, and then adding ferrous sulfate, performing stirring and dissolving, then adding hydrogen peroxide, performing a Fenton reaction for 1-2 hours, adding an alkali to adjust the pH to neutrality, and performing pressure filtration to remove phosphorus in the industrial organic wastewaters; on a building roof layer, lifting the industrial organic wastewaters after removing phosphorus to the building roof layer by a lifting pump, and further performing ammonia nitrogen, organic matters and phosphorus removals on the industrial organic wastewaters by artificial wetland equipment.

Description

Technical field [0001] The invention relates to industrial organic wastewater treatment, in particular to a three-dimensional industrial organic wastewater treatment method that meets surface IV discharge standards. Background technique [0002] In order to prevent and treat the problems of water pollution, protect the quality of terrestrial water, protect human health, and maintain the existing natural ecological environment system, the "Surface Water Environmental Quality Standard" has been formulated. For all the rivers and lakes in our country, according to the classification of surface water environmental functions and the goals of protection, according to the total height of the surface water functions [0003] Class I to V, of which Class IV is a stricter discharge standard, which is mainly applicable to water used in general industrial areas and recreational water areas where the human body is not directly contacted. In addition to the large amount of domestic sewage cause...

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Problems solved by technology

Although these methods can deal with most of the pollutants, they have the same disadvantage that the quality of the effluent after treatment is difficult to meet the Class IV water quality standard of the "Environmental Quality Standards for Surface Water" (GB 3838-2002)

[0005] Biochemical method can effectively treat organic matter and ammonia nitrogen pollutants in wastewater, but at the same time, it is limited by the C / N ratio, so the ability to treat pollutants is limited; Fenton oxidation method can oxidize hypophosphite and phosphite in wastewater to orthophosphate , so that it is removed through the formation of iron phosphate precipitation, but it does not have the ability to remove ammonia nitrogen; the constructed wetland method has a certain ability to remove organic matter, ammonia nitrogen, phosphorus and other pollutants, but it is only good for wastewater with low pollutant concentration capacity, and limited processing power

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