Livestock and poultry wastewater treatment system and treatment method using system

A wastewater treatment system, livestock and poultry technology, applied in the field of livestock and poultry breeding wastewater treatment, can solve the problems of tower biofilter filter blockage, insufficient contact between granular sludge bed and wastewater, heavy load at the bottom of the reactor, etc. To avoid the plugging problem of fillers, improve the ability to remove organic matter, and improve the effect of water permeability

Inactive Publication Date: 2015-05-20
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] For the anaerobic treatment process CH in the treatment of livestock and poultry wastewater in the prior art 4 Disordered discharge of gas, insufficient contact between the granular sludge bed and wastewater in the EGSB reactor, excessive load at the bottom of the reactor, and clogging of the filter material of the tower biofilter. The invention provides a livestock and poultry wastewater treatment system and its Treatment method, the treated wastewater can not only meet the standard of "Discharge Standard of Pollutants for Livestock and Poultry Breeding Industry" (GB18596-2001), but also the infrastructure and operation costs of wastewater treatment are lower

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  • Livestock and poultry wastewater treatment system and treatment method using system
  • Livestock and poultry wastewater treatment system and treatment method using system
  • Livestock and poultry wastewater treatment system and treatment method using system

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Embodiment 1

[0040] The present embodiment uses pig manure sewage (average water quality is COD 3877.4mg / L, TP 39.0mg / L, TN1335.8mg / L, NH 4 + -N781.3mg / L, SS 1765mg / L, pH 8.01) as an example for wastewater treatment.

[0041] to combine figure 1 , figure 2 , the pig manure sewage (average water quality is COD 3877.4mg / L, TP 39.0mg / L, TN1335.8mg / L, NH 4 + -N781.3mg / L, SS 1765mg / L, pH 8.01), at 1.2m 3 The flow rate of / h is injected into the EGSB anaerobic reactor 2, the height of the EGSB anaerobic reactor 2 is 8m, the diameter is 1m, and the effective volume is 24m 3 , the top is provided with a three-phase separator 24, and the mechanical stirrer 21 is evenly distributed along the stirring shaft with 5 impellers 22, the diameter is 0.8m, and the internal reflux starts after 20h, and the reflux flow rate is 6.0m 3 / h, by adjusting the opening and closing of the backflow control valve and the degree of opening, the rotating speed of the impeller 22 in the mechanical agitator 21 is 17...

Embodiment 2

[0045] The present embodiment uses pig manure sewage (average water quality is COD 2544.8mg / L, TP 35.0mg / L, TN644.7mg / L, NH 4 + -N281.3mg / L, SS 1664mg / L, pH 7.53) as an example for wastewater treatment.

[0046] to combine figure 1 , the pig manure sewage (average water quality is COD 2544.8mg / L, T P 35.0mg / L, TN644.7mg / L, NH 4 + -N281.3mg / L, SS 1664mg / L, pH 7.53), at 2.0m 3 The flow rate of / h is injected into the EGSB anaerobic reactor 2, such as figure 2 , EGSB anaerobic reactor 2 is 5m high, 1m in diameter, and has an effective volume of 14m 3 , the top is provided with a three-phase separator 24, and the stirring shaft of the mechanical agitator 21 is provided with 4 impellers 22 with a diameter of 0.6m, which are uniformly staggered along the vertical direction, and the internal reflux starts after 7h, and the reflux flow rate is 6.0m 3 / h, by adjusting the opening and closing of the backflow control valve and the degree of opening, the rotating speed of the impel...

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Abstract

The invention discloses a livestock and poultry wastewater treatment system and a treatment method using the system, and belongs to the treatment field of livestock and poultry breeding wastewater. The treatment system comprises a water yield regulating pond, an EGSB (Expanded Granular Sludge Bed) anaerobic reactor and a tower-type biological filtering pond which are sequentially connected in series, wherein a mechanical agitator is arranged in the EGSB anaerobic reactor; the partial effluent of the EGSB anaerobic reactor is sent to the bottom of the EGSB anaerobic reactor in a pump exhausting manner so as to perform internal reflux; the reflux water is controlled by controlling the opening / closing and the opening degree of the valve; the reflux water is fed into a water distributing pipe which is positioned at the bottom of the EGSB anaerobic reactor and connected with a water distributor after the reflux water propels an impeller to rotate via the mechanical agitator. According to the system and the method, the treated wastewater can meet the requirement of 'Discharge Standard Of Pollutants For Livestock and Poultry Breeding' (GB18596-2001); the capital construction cost and the operating cost of wastewater treatment are lowered.

Description

technical field [0001] The invention belongs to the field of treatment of livestock and poultry wastewater, more specifically, a system and method for treatment of livestock and poultry wastewater. Background technique [0002] In recent years, economic development has accelerated the development of livestock and poultry breeding industry. Pollutants produced by the livestock and poultry breeding industry, especially wastewater from farms, have become increasingly prominent environmental pollution problems. In addition to a large amount of flushing water, pig farm wastewater also contains urine, feces residues, feed residues, etc. The concentration of organic matter and suspended matter is high, and the composition is complex. It belongs to the typical "three high" wastewater, that is, high organic matter concentration, high Suspended solids and high nitrogen and phosphorus concentrations have made it difficult to meet the standards. According to relevant research, the COD...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 高吉喜张后虎彭禹蔡邦成
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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