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Bio-augmentation treatment system for coking wastewater

A bio-augmentation and coking wastewater technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of large area of ​​treatment facilities, high energy consumption, and difficulty in meeting standards stably and other issues to achieve the effect of improving utilization rate and biological activity and improving degradation

Inactive Publication Date: 2011-06-15
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The energy consumption is high during operation and the treatment facilities occupy a large area, but there are still some difficulties in meeting the three indicators of COD, ammonia nitrogen and chroma in the effluent stably.
According to the statistical results, currently 80% of the coking waste water ammonia nitrogen and COD discharged by the enterprises are not up to the standard

Method used

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  • Bio-augmentation treatment system for coking wastewater
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  • Bio-augmentation treatment system for coking wastewater

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Embodiment 1

[0031] Such as figure 1 As shown, this embodiment provides a biologically enhanced treatment system for coking wastewater, which can achieve the goal of stabilizing the effluent after coking wastewater treatment. The system includes anoxic pool, bio-enhanced aerobic pool and secondary sedimentation pool.

[0032] Among them, the pretreated coking wastewater flows in from the inlet of the anoxic tank, flows through the anoxic tank, the biological aerobic tank, and the secondary sedimentation tank in turn, and finally flows out of the system from the outlet of the secondary sedimentation tank. Part of the sludge at the bottom of the secondary settling tank is returned to the water inlet of the anoxic tank through the pipeline.

[0033] Carbon-containing organic matter contained in coking wastewater is removed by oxidative decomposition of microorganisms suspended in the pool and loaded on artificial fillers when flowing through the bio-enhanced aerobic pool. NH contained in co...

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Abstract

The invention discloses a bio-augmentation treatment system for coking wastewater, belonging to the field of water treatment. The bio-augmentation treatment system comprises a hypoxia pool, a bio-augmentation aerobic pool and a secondary sedimentation pool which are connected in sequence, wherein the water inlet of the hypoxia pool is used as the water inlet of the entire bio-augmentation treatment system for the coking wastewater, the hypoxia tank is connected with the bio-augmentation aerobic tank, the water outlet of the bio-augmentation aerobic tank is connected with a secondary sedimentation pool, and the water outlet of the secondary sedimentation pool is used as the water outlet of the entire bio-augmentation treatment system for the coking wastewater. Fillers fixed with efficient bacteria are added into the bio-augmentation aerobic pool so as to improve a degradation effect, and screen cloth, an automatic filler fishing-out device and an enriching and culturing tank for superior degraded bacteria in the coking wastewater are arranged on the water outlet end of the bio-augmentation aerobic pool so as to increase the utilization rate and improve the bioactivity of the efficient bacteria. The treatment system can overcome the defects that the traditional A / O (Anoxic / Oxic) process has the treatment effect greatly affected by water quality and the effluent quality incapable of reaching a standard stably, and ensures that the effluent of the A / O treatment process for the coking wastewater reaches the standard stably.

Description

technical field [0001] The invention relates to a coking wastewater treatment technology, in particular to a coking wastewater biointensified treatment system. Background technique [0002] The discharge of coking wastewater has a great impact on the environment. The specific processes used in coking are different, and the quality of wastewater is also different. The quality of wastewater discharged from the same process at different times also varies greatly. The overall performance is that there are many toxic substances and biological inhibitors in wastewater, and contain High concentrations of ammonia nitrogen, phenols, and cyanides belong to high-concentration, refractory, toxic and harmful organic wastewater. [0003] At present, the treatment of coking wastewater mainly includes pretreatments such as ammonia distillation, oil removal and phenol extraction to improve the biodegradability of coking wastewater. After pretreatment of coking wastewater, many enterprises us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 秦强王建兵高振凤王春荣张春晖何绪文许翠华赵妙徐泽升赵文芳
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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