Sequencing batch biofilm reactor for piggery wastewater

A sequencing batch biofilm and pig farm wastewater technology is applied in the field of pig farm wastewater treatment equipment, which can solve the problems of low sludge concentration and poor sludge sedimentation, and achieve large equipment processing capacity, fast sedimentation and good sedimentation performance. Effect

Inactive Publication Date: 2010-10-20
NANCHANG UNIV
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Problems solved by technology

[0003] The object of the invention is to provide a kind of sequential batch type biofilm reactor (SBBR) for processing pig farm waste water at the shortcomings of SBR process directly processing pig farm anaerobic digestion liquid, poor sludge settling property and low sludge concentration

Method used

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  • Sequencing batch biofilm reactor for piggery wastewater
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Embodiment Construction

[0015] A large-scale pig farm adopts biogas digester + SBBR combination process to treat 150m 3 / d Pig wastewater, the size of the square steel-concrete structure of the SBBR reactor is length × width × height = 6m × 3m × 5m. The effluent from the biogas tank flows into the SBBR tank, and after aerobic / facultative nitrification and denitrification in the SBBR tank, pollutants such as COD, ammonia nitrogen and phosphorus in the wastewater are further removed. After the wastewater is treated, the effluent quality meets the requirements of GB18596-2001 "Discharge Standard of Pollutants for Livestock and Poultry Breeding Industry". SBBR effluent COD 300-400mg / L, NH 3 -N 40~80mg / L TP 5~8mg / L.

[0016] The specific implementation process is as follows:

[0017] (1) After the pig farm wastewater is collected by the sewage collection pipe network, it is intercepted by the mechanical grille to remove large particles of pollutants and floating objects in the sewage, and the wastewater...

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Abstract

The invention discloses a sequencing batch biofilm reactor (SBBR) for piggery wastewater, which comprises a square steel concrete structural pool and a decanter. Three-dimensional elastic filler is suspended in the pool, and a micropore aeration disc is arranged at the pool bottom; a single operation cycle of the SBBR comprises five processes of water feed, reaction, sedimentation, water discharge and idleness; and the operation of each unit is controlled by a PLC. The SBBR has the characteristics of high organic substance degradation capability and ammonia nitrogen removal capability, low residual sludge yield after treatment, high sewage treatment capacity, suitability for full-course automatic control and the like.

Description

technical field [0001] The invention relates to environmental engineering technical equipment, in particular to a treatment equipment for high-concentration refractory pig farm wastewater. Background technique [0002] Livestock and poultry breeding wastewater, especially large-scale pig farming wastewater, has become a major source of pollution in many areas of our country. At present, most pig farms use solid-liquid separation-anaerobic-aerobic treatment of fecal wastewater, and the sequencing batch reactor (SBR) is widely used as a reactor for the aerobic treatment of anaerobic digestion liquid of pig farm wastewater. SBR is the abbreviation of Sequencing Batch Reactor. Compared with continuous activated sludge system, SBR is mainly characterized by batch operation. Continuous flow processes are spatially continuous. The waste water first enters the reaction tank, then enters the sedimentation tank to settle the mixed liquid, and the supernatant separated from the acti...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 万金保顾平
Owner NANCHANG UNIV
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