Treatment method of wastewater from processing of betel nuts

Abstract

The invention discloses a treatment method of wastewater from processing of betel nuts. The method comprises the following steps: 1) filtering the wastewater from the processing of the betel nuts through an artificial screen and then draining the wastewater into a regulation pool; 2) hoisting the wastewater in the regulation pool into a UASB (up anaerobic sludge blanket) anaerobic reactor for removing most of organic matters in the wastewater; 3) enabling supernatant fluid in the UASB anaerobic reactor to flow into a first-stage biological contact oxidation pool for removing part of the organic matters in the wastewater; 4) enabling the wastewater after the processing in the step 3) to automatically flow into a first precipitation pool for precipitation; 5) enabling the supernatant fluid after the precipitation to automatically flow into an advanced oxidation reaction tank for pre-oxidizing the organic matters which are difficult to biodegrade; 6) enabling the wastewater after advanced oxidation to automatically flow into a coagulation and precipitation pool for performing coagulation reaction and solid-liquid separation; 7) enabling the supernatant fluid after solid-liquid separation to automatically flow into a second-stage biological contact oxidation pool; and 8) enabling the wastewater after the processing in the step 7) to automatically flow into a second precipitation pool for precipitation and draining the supernatant fluid after the supernatant fluid achieves the standard. According to the method disclosed by the invention, the problems that the wastewater from the processing of the betel nuts is difficult to treat in a biochemical manner and the waste water after treatment can not achieve the standard are solved.

Description

technical field [0001] The invention relates to a treatment method for betel nut processing wastewater, which belongs to the technical field of environmental protection wastewater treatment. Background technique [0002] The raw materials in the betel nut processing process include sodium saccharin, cyclamate, maltose, lime, etc. The waste water produced is mainly composed of betel nut fruit washing, seed boiling wastewater and workshop cleaning water, and the wastewater generated from seed cooking has high concentration of organic matter and high chroma , high concentration of suspended solids and difficult to biochemical. Most betel nut processing enterprises do not treat wastewater, or discharge wastewater directly into large sedimentation tanks for natural oxidation degradation, in order to save investment in wastewater projects and treatment and operation costs. Although some betel nut processing enterprises have installed wastewater treatment equipment, the treatment ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a treatment method for betel nut processing wastewater. The treatment method of the present invention adopts a combination of physicochemical and biochemical technologies, and proposes UASB-first-level biological contact oxidation-advanced oxidation-coagulation sedimentation-secondary biological contact The oxidation process solves the problems of the existing betel nut processing wastewater that is difficult to biochemically and cannot be treated up to standard, leading to environmental pollution and water resource pollution. Low, easy to promote and apply

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