Resource utilization and regeneration circulation utilization device for livestock and poultry breeding wastewater

Abstract

The invention discloses a resource utilization and regeneration circulation utilization device for livestock and poultry breeding wastewater. The device comprises an anaerobic tank, a grid tank, an adjusting tank, an ammonia-nitrogen removing device, a biological aerated filter (BAF), a disinfecting tank, a sludge tank, a sludge filter press and a gas collecting device, wherein the ammonia-nitrogen removing device can be in one of the modes of struvite precipitation method ammonia-nitrogen removal and blow-off method ammonia-nitrogen removal. The device is based on the combination of an anaerobic technique, a denitrification technique, a BAF technique and a disinfection technique, the livestock and poultry breeding wastewater is used as the resource and is subjected to anaerobic fermentation treatment to generate biogas, the wastewater is further subjected to solid-liquid separation after the biogas is generated, the solid residue is used as the raw material for producing an organic fertilizer to produce the organic fertilizer, the wastewater is subjected to BAF technique and disinfection and is subsequently recycled and discharged by being up to standard, the treatment effect is good, the energy consumption is low, the resource is comprehensively utilized, and economical benefits are achieved.

Description

technical field

[0001] The invention relates to a resource utilization and recycling device for livestock and poultry breeding wastewater, in particular to a comprehensive utilization of livestock and poultry breeding wastewater resources and wastewater regeneration and recycling based on anaerobic technology, denitrification technology, BAF technology and disinfection technology The device, especially the wastewater from livestock and poultry breeding, is processed through anaerobic fermentation to produce biogas, and the wastewater after biogas production is separated from solid and liquid. After BAF technology and disinfection, it can be recycled and discharged up to standard, which belongs to the field of water pollution control of environmental engineering. Background technique

[0002] Wastewater from livestock and poultry farms mainly includes urine, feces and flushing water from breeding houses. This type of wastewater has a high concentration of organic matter, its ...

Examples

Embodiment 1

[0043] 500 tons / day livestock and poultry breeding waste water resource utilization and waste water recycling method.

[0044] The water quality indicators of the livestock and poultry breeding wastewater were determined as shown in Table 1.

[0045] Table 1 Water quality indicators of livestock and poultry breeding wastewater

[0046] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 5000 5 Ammonia nitrogen mg / L 1000 2 SS mg / L 20000 6 Fecal coliforms pcs / L 2.5×10 7 3 BOD 5 mg / L 2900 7 roundworm eggs pcs / L 15000 4 Total Phosphorus mg / L 150

[0047] (1) Anaerobic treatment

[0048] The livestock and poultry breeding wastewater is collected through pipelines and then discharged into the anaerobic pool 1. The organic matter is decomposed into methane and carbon dioxide under the combined action of anaerobic and facultative bacteria adso...

Embodiment 2

[0069] 1200 tons / day livestock and poultry breeding waste water resource utilization and waste water regeneration recycling method.

[0070] The water quality indicators of the livestock and poultry breeding wastewater were determined as shown in Table 6.

[0071] Table 6 Water quality indicators of livestock and poultry breeding wastewater

[0072] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 13000 5 Ammonia nitrogen mg / L 1000 2 SS mg / L 16500 6 Fecal coliforms pcs / L 2×10 7 3 BOD 5 mg / L 4500 7 roundworm eggs pcs / L 12000 4 Total Phosphorus mg / L 180

[0073](1) Anaerobic digestion to produce biogas

[0074] The livestock and poultry breeding wastewater is collected through pipelines and then discharged into the anaerobic pool 1. The organic matter is decomposed into methane and carbon dioxide under the combined action of anaerobic...

technical field

[0001] The invention relates to a resource utilization and recycling device for livestock and poultry breeding wastewater, in particular to a comprehensive utilization of livestock and poultry breeding wastewater resources and wastewater regeneration and recycling based on anaerobic technology, denitrification technology, BAF technology and disinfection technology The device, especially the wastewater from livestock and poultry breeding, is processed through anaerobic fermentation to produce biogas, and the wastewater after biogas production is separated from solid and liquid. After BAF technology and disinfection, it can be recycled and discharged up to standard, which belongs to the field of water pollution control of environmental engineering. Background technique

[0002] Wastewater from livestock and poultry farms mainly includes urine, feces and flushing water from breeding houses. This type of wastewater has a high concentration of organic matter, its ...

Examples

Embodiment 1

[0043] 500 tons / day livestock and poultry breeding waste water resource utilization and waste water recycling method.

[0044] The water quality indicators of the livestock and poultry breeding wastewater were determined as shown in Table 1.

[0045] Table 1 Water quality indicators of livestock and poultry breeding wastewater

[0046] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 5000 5 Ammonia nitrogen mg / L 1000 2 SS mg / L 20000 6 Fecal coliforms pcs / L 2.5×10 7 3 BOD 5 mg / L 2900 7 roundworm eggs pcs / L 15000 4 Total Phosphorus mg / L 150

[0047] (1) Anaerobic treatment

[0048] The livestock and poultry breeding wastewater is collected through pipelines and then discharged into the anaerobic pool 1. The organic matter is decomposed into methane and carbon dioxide under the combined action of anaerobic and facultative bacteria adso...

Embodiment 2

[0069] 1200 tons / day livestock and poultry breeding waste water resource utilization and waste water regeneration recycling method.

[0070] The water quality indicators of the livestock and poultry breeding wastewater were determined as shown in Table 6.

[0071] Table 6 Water quality indicators of livestock and poultry breeding wastewater

[0072] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 13000 5 Ammonia nitrogen mg / L 1000 2 SS mg / L 16500 6 Fecal coliforms pcs / L 2×10 7 3 BOD 5 mg / L 4500 7 roundworm eggs pcs / L 12000 4 Total Phosphorus mg / L 180

[0073](1) Anaerobic digestion to produce biogas

[0074] The livestock and poultry breeding wastewater is collected through pipelines and then discharged into the anaerobic pool 1. The organic matter is decomposed into methane and carbon dioxide under the combined action of anaerobic...

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