Resource utilization and treatment method of livestock breeding wastewater

A technology for livestock and poultry breeding wastewater and treatment methods, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of large investment, high operating costs, and inability to fully recycle, etc. problems, to achieve the effect of overcoming low resource utilization, stable water quality, and meeting the water quality requirements for recycling

Inactive Publication Date: 2013-09-04
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. N

Method used

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  • Resource utilization and treatment method of livestock breeding wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 500 tons / day livestock and poultry breeding wastewater resources utilization and wastewater treatment methods.

[0040] The water quality indicators of the livestock and poultry breeding wastewater were determined as shown in Table 1.

[0041] 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

[0042] (1) Anaerobic digestion to produce biogas

[0043] The livestock and poultry breeding wastewater is collected through pipelines and discharged into the anaerobic pool 1. The organic acids are decomposed into methane and carbon dioxide under the combined action of anaerobic and facultative bacteria adsorption, fermentation, and methanogenicity in the anaerobic pool 1. The tre...

Embodiment 2

[0059] 1200 tons / day livestock and poultry breeding wastewater resources utilization and wastewater treatment methods.

[0060] The water quality indicators of the livestock and poultry breeding wastewater were determined and shown in Table 5.

[0061] 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

[0062] (1) Anaerobic digestion to produce biogas

[0063] The livestock and poultry breeding wastewater is collected through pipelines and discharged into the anaerobic pool 1. The organic acids are decomposed into methane and carbon dioxide under the combined action of anaerobic and facultative bacteria adsorption, fermentation, and methanogenicity in the anaerobic pool 1. Treatm...

Embodiment 3

[0077] 2000 tons / day livestock and poultry breeding wastewater resources utilization and wastewater treatment methods.

[0078] The water quality indicators of the livestock and poultry breeding wastewater are shown in Table 9 after determination.

[0079] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 7500 5 Ammonia nitrogen mg / L 600 2 SS mg / L 17000 6 Fecal coliforms pcs / L 3×10 7 3 BOD 5 mg / L 3900 7 roundworm eggs pcs / L 10000 4 Total Phosphorus mg / L 110

[0080] (1) Anaerobic treatment

[0081] The livestock and poultry breeding wastewater is collected through pipelines and discharged into the anaerobic pool 1. The organic acids are decomposed into methane and carbon dioxide under the combined action of anaerobic and facultative bacteria adsorption, fermentation, and methanogenicity in the anaerobic pool 1. Treatment improves the...

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Abstract

The invention discloses a resource utilization and treatment method of livestock breeding wastewater, which comprises the following steps of (1) producing biogas through anaerobic digestion, (2) deslagging, (3) performing biological aerated filter (BAF) biochemistry, (4) disinfecting, and (5) manufacturing an organic fertilizer. According to the method, an anaerobic digestion biogas producing technology, a BAF technology and a disinfection technology are combined, the livestock breeding wastewater is taken as a resource and subjected to anaerobic fermentation treatment, the biogas is produced, the wastewater after the biogas is produced is subjected to solid-liquid separation, solid slag serves as a raw material for producing the organic fertilizer, the organic fertilizer is produced, and the wastewater is recycled after the BAF technology and disinfection and is discharged up to a standard, so that the treatment effect is good, the energy consumption is low, the resource is comprehensively utilized, and the method has economic benefits.

Description

technical field [0001] The present invention relates to a resource utilization and treatment method of livestock and poultry breeding wastewater, in particular to a comprehensive utilization of livestock and poultry breeding wastewater resources and a wastewater treatment method based on anaerobic technology, BAF technology and disinfection technology, especially a method based on livestock and poultry breeding Wastewater is a resource, which is processed through anaerobic fermentation to produce biogas. After producing biogas, the waste water is separated from solid and liquid. The solid residue is used as raw material for the production of organic fertilizers, and the waste water is regenerated after BAF technology and disinfection. Recycling belongs to the field of water pollution control in environmental engineering. Background technique [0002] Wastewater from livestock and poultry farms mainly includes urine, feces and flushing water from breeding houses. This type of...

Claims

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Application Information

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IPC IPC(8): C02F9/14C05G1/00
CPCY02E50/30
Inventor 张世文徐琛林锦松陈艺羡李丹
Owner BOYING XIAMEN SCI & TECH
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