Method and device for treating organic oil-containing wastewater

Abstract

The invention discloses a device for treating organic oil-containing wastewater. The device mainly comprises a multifunctional adjusting tank, a deodorization device, an internal electrolysis anaerobic / anoxic biological iron carbon reaction tank, a flexible biological membrane contact oxidation tank, an air blower room, a sedimentation tank, an artificial wetland and an ecological landscape pond. According to the method and device disclosed by the invention, micro-electrolysis is used as a pretreatment technology, and the organics and nitrogen and phosphorus pollutants in the oil-containing wastewater and the animal and plant oil in the wastewater are removed according to the combined action on organic pollutants by the microorganisms in suspension and attachment states and in combination with the physical and chemical adsorption sedimentation-percolation process and the plant absorption and conversion process. The method disclosed by the invention combines the advantages of the technologies such as iron carbon filtration and biological iron method, A2 / O technology, artificial wetland, artificial floating island and the like, realizes strong pretreatment ability and small floor area, and has the characteristics of large water treatment quantity, strong purification ability, good landscape effect, low operation cost, ecological safety, stable water output and strong pollution load resistance and hydraulic load impact resistance.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a treatment device for organic oily waste water. [0002] The invention also relates to a method for treating organic grease-containing wastewater by using the device. Background technique [0003] In addition to organic matter, oily wastewater also contains non-biodegradable oil. If it is discharged directly, the oil will form an oil film on the water surface, hindering oxygen transmission and threatening the survival of aquatic animals and plants. The main processing methods currently used are physical, chemical and biological methods. Physical methods mainly include mechanical oil separation, air flotation, and gravity sedimentation, while chemical methods mainly use electrolysis and flocculation. The dilution, aggregation or migration in different environments may cause secondary pollution, so it is not popular. The biological method is favored because of its lo...

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Problems solved by technology

[0004] When the general biological method is used to treat oily wastewater, the oil is wrapped on the surface of the sludge, which hinders the mass transfer and reduces the conversion rate of the substrate; in addition, the filamentous bacteria in the reactor multiply, and the oil adheres to the surface of the sludge, which is easy to Difficulty in sludge settling, resulting in a large loss of activated sludge, reactor blockage and foul odor overflow and other operational problems

The use of artificial wetlands and other ecological methods to treat oily wastewater is prone to clogging

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