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

A technology for livestock and poultry breeding wastewater and resources, applied in fertilization devices, applications, preparation of organic fertilizers, etc., can solve the problems of low nitrogen and phosphorus removal rates, insufficient recycling and high operating costs, and achieve the degree of resource utilization. High, meet the water quality requirements for recycling, and reduce the cost of wastewater treatment

Inactive Publication Date: 2013-09-18
BOYING XIAMEN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Judging from the existing treatment technology and process, there are some shortcomings as follows: 1. Most of them adopt anaerobic primary treatment, which reduces most of COD, but the removal rate of nitrogen and phosphorus is not very high
2. Nitrogen and phosphorus resources cannot be fully recycled, and it is easy to cause eutrophication when discharged into water bodies
3. The investment required to build this type of manure treatment facility is too large and the operating cost is too high

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

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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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F11/12C05F7/00C05F17/00C05B17/00
CPCY02A40/20Y02W30/40
Inventor 张世文徐琛林锦松许雅玲李丹
Owner BOYING XIAMEN SCI & TECH
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