A biodiesel wastewater treatment device

Abstract

The invention discloses a biodiesel wastewater treatment device. The biodiesel wastewater treatment device comprises an oil separation tank, an adjusting tank, a sewage pump, a neutralization reaction tank, a coagulating precipitation tank, an anaerobic tank, an aerobic tank, a biological sedimentation tank and an active carbon filtering tank which are connected in sequence, wherein a medicine charging system is connected with the neutralization reaction tank; water outlets of the coagulating precipitation tank and the biological sedimentation tank are annular water outlet grooves formed above the tanks, flow guide barrels are arranged in the middle parts of the tanks and tapered mud collection buckets are arranged at the bottoms of the tanks; a mud discharging pipe is arranged at the bottom of the tapered mud collection bucket of the coagulating precipitation tank; the mud discharging pipe is connected with a mud storage tank; a mud discharging pipe is arranged at the bottom of the tapered mud collection bucket of the biological sedimentation tank and the mud discharging pipe is connected with an inlet of a sludge reflowing pump; an outlet of the sludge reflowing pump is communicated with the bottom of the anaerobic tank by a pipeline; the anaerobic tank and the aerobic tank are internally provided with filler racks and the filler racks are internally filled with combined fillers; an aeration pipe is arranged at the bottom of the aerobic tank; the aeration pipe is connected with an air blower; the medicine charging system is internally provided with an aeration pipe and the aeration pipe is connected with the air blower.

Description

Technical field: [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a biodiesel wastewater treatment device. Background technique: [0002] The rapid development of the domestic economy drives the rapid development of various industries. The consumption of oil and coal resources is increasing year by year, and the earth's energy reserves are also gradually decreasing. The pollutants emitted when consuming petrochemical energy cause great damage to the environment. In order to reduce Relying on traditional petrochemical energy and protecting the earth's environment, governments of various countries attach great importance to the development of renewable energy. As a clean and cheap renewable energy, biodiesel has developed rapidly in my country. It is estimated that by 2020, the annual output of biodiesel in my country will reach 12 million tons. With the increase of biodiesel production, the environmental pollution problem of thi...

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Problems solved by technology

At present, there is no effective treatment of biodiesel wastewater in China. Usually, a single grease trap, oil-water separator, air flotation machine and coagulation sedimentation equipment are used. These equipment can remove more than 80% of animal and vegetable oils and suspended solids in wastewater. However, most of the organic pollutants cannot be removed, and combined equipment is also used. Due to the lack of high-efficiency anaerobic tanks and activated carbon filter tanks in the equipment, there are still a small amount of organic pollutants in the final effluent, resulting in the effluent water quality not reaching the national level. The first-level discharge standard, causing certain pollution to the surrounding water environment

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