Large-scale pig farm wastewater treatment method

A technology for wastewater treatment and pig farms, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of complex treatment process and high treatment costs, and ensure discharge that meets standards , the effect of improving biodegradability

Active Publication Date: 2013-08-14
巨星农牧有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In order to overcome the above-mentioned defects of complex pig farm wastewater treatment process and high treatment cost, the present invention provides a large-scale pig farm wastewater treatment method, which can not only treat pig farm wastewater to the national wastewater discharge standard, but also reduce the impact on the environment. pollution, and its treatment method is simple, easy to control, low treatment cost, suitable for the promotion and application of large-scale pig farm wastewater treatment

Method used

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Embodiment Construction

[0049] The present invention comprises the following process steps

[0050] A. Anaerobic fermentation

[0051] Introduce the waste water produced by the pig farm into the biogas digester for anaerobic fermentation;

[0052] B. to filter

[0053] Use grid wells to filter the waste water after step A;

[0054] C. Conditioning pool treatment

[0055] Introducing the wastewater through the B step into the regulating tank, adding lye in the regulating tank, so that the pH value of the wastewater in the regulating tank is 6.5 to 7.5;

[0056] D. Initial precipitation

[0057] Pump the wastewater in the regulating tank into the primary sedimentation tank for preliminary sedimentation;

[0058] E. Anaerobic tank treatment

[0059] The wastewater in the primary sedimentation tank is introduced into the anaerobic tank for anaerobic treatment, and the anaerobic treatment lasts for 12 to 22 hours;

[0060] F. Precipitation again

[0061] The wastewater in the anaerobic tank is i...

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Abstract

The invention relates to a large-scale pig farm wastewater treatment method comprising anaerobic fermentation, filtering, regulating pool treatment, primary precipitation, anaerobic pool treatment, secondary precipitation, A/O pool treatment, precipitation of secondary sedimentation tank, flocculent precipitation treatment, final precipitation treatment and disinfecting tank treatment. The treatment method provided by the invention is simple in treatment procedures, low in treatment cost and strong in treatment ability, thereby being suitable for popularization and application of large-scale pig farm wastewater treatment.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a wastewater treatment method for large-scale pig farms. Background technique [0002] Wastewater from large-scale pig farms is mainly composed of urine, residual feces, feed residues, and flushing water. Some farms also include domestic wastewater generated during the production process. The former is the main part, of which flushing water accounts for the vast majority. The water quality characteristics of pig farm wastewater are related to the structure of the pig house, the way of cleaning manure and the use of flushing water, feed nutrition, pig digestive function and production management. Due to the high concentration of organic matter in pig farming wastewater, and it contains a large amount of nitrogen, phosphorus, suspended solids, pathogenic bacteria and other components, if these pollutants are not properly treated, once they enter natural water bodies and farmland, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 唐春祥
Owner 巨星农牧有限公司
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