Biological treatment system and method of phenolic wastewater

A technology of biological treatment and treatment method, which is applied in the biological treatment system and treatment field of phenolic wastewater, which can solve the problems of unsatisfactory organic wastewater treatment effect, low biochemical treatment efficiency, and high phenolic concentration, so as to achieve low maintenance costs and improve water quality , the effect of reducing harm

Inactive Publication Date: 2009-06-03
BEIJING SOUND ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing treatment system is not ideal for the treatment of refractory organic wastewater with complex composition, high ...

Method used

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  • Biological treatment system and method of phenolic wastewater
  • Biological treatment system and method of phenolic wastewater

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Effect test

Embodiment 1

[0032] This embodiment provides a biological treatment system for phenol-containing wastewater, which can treat high-phenol-containing wastewater and effectively reduce toxic substances in the effluent, such as figure 2 As shown, the system specifically includes:

[0033] Adjusting pond 21, biochemical pretreatment pond 25, anoxic pond 28, aerobic pond 211 and secondary sedimentation pond 213; Wherein, anoxic pond 28 is provided with stirring device 29, and aerobic pond 211 is provided with aeration equipment 212 ( Generally, an aeration head is used), and the aeration equipment 212 is connected with the external air compressor 210;

[0034] Described adjustment pool 21 is provided with water inlet A1 and water outlet, and the water outlet of adjustment pool 21 is connected with the water inlet of biochemical pretreatment pool 25, and the water outlet of biochemical pretreatment pool 25 is anoxic pool 28, aerobic pool 211 successively. It is connected with the secondary sett...

Embodiment 2

[0045] This embodiment provides another biological treatment system for phenolic wastewater, such as figure 2 As shown, the system specifically includes: regulating tank, dosing tank, biochemical pretreatment tank, anoxic tank, aerobic tank and secondary sedimentation tank; wherein, the anoxic tank is equipped with a stirring device, and the aerobic tank is equipped with an aeration tank. Aeration equipment, the aeration equipment is connected with an external air compressor;

[0046] Among them, the regulating pool is provided with a water inlet for introducing phenol-containing wastewater, and the water outlet of the regulating pool and the drug supply port of the dosing pool are connected to the water inlet of the biochemical pretreatment pool, and the water outlets of the biochemical pretreatment pool are sequentially anoxic pool, The aerobic tank is connected to the secondary settling tank; wherein, the outlet pipeline connecting the aerobic tank to the secondary settlin...

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Abstract

The invention discloses biological treatment system and biological treatment method of phenolic wastewater, and belongs to the field of wastewater treatment. The treatment system comprises a regulating tank, a biochemical pretreatment tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank, wherein a stirring device is arranged in the anoxic tank; an aerator is arranged in the aerobic tank; the aerator is connected with an external air compressor; a water inlet and a water outlet are formed on the regulating tank; the water outlet of the regulating tank is connected with a water inlet of the biochemical pretreatment tank; a water outlet of the biochemical pretreatment tank is connected with the anoxic tank, the aerobic tank and the secondary sedimentation tank in sequence; a mud outlet and a treating water outlet are formed on the secondary sedimentation tank; the mud outlet of the secondary sedimentation tank is connected with the anoxic tank and in the aerobic tank through a mud recirculation pipe and a mud recirculation pump. The invention has the advantages of simple structure, capability of improving the stability and the treatment efficiency of the biochemical system, lower treatment cost, and remarkable economical benefit and practical value.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a biological treatment system and treatment method for phenol-containing wastewater. Background technique [0002] Phenolic substances in wastewater mainly include phenol, cresol, resorcinol and other phenolic compounds. Phenolic compounds are a class of highly toxic and difficult-to-degrade organic compounds with a wide range of sources, and are the main pollutants in industrial wastewater such as oil refining, coking, and papermaking. [0003] Phenolic compounds are protoplasmic poisons that are toxic to all living organisms. It can be inhaled through contact with the skin and mucous membranes or invade the organism through the oral cavity. After contacting with the protein in the cell protoplasm, it forms insoluble protein and deactivates the cells. It has a greater affinity for the nervous system, causing pathological changes in the nervous system . Phenol-containing wastew...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30
Inventor 王发珍李天增王凯文一波孙丽波许梅花李京旭
Owner BEIJING SOUND ENVIRONMENTAL ENG
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