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Livestock and poultry breeding wastewater treatment method

A technology for livestock and poultry breeding wastewater and treatment methods, which is applied in the field of high-concentration organic water treatment, and can solve problems such as unsatisfactory treatment effects of sewage treatment systems, inability of effluent to meet standards stably, and adverse environmental effects, so as to promote enrichment, reproduction, growth, and mitigation Economic burden, effect of maintaining difference in dissolved oxygen concentration

Active Publication Date: 2014-07-16
WUXI XINDU ENVIRONMENTAL PROTECTION EQUIP +1
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Problems solved by technology

In addition, in addition to the need for a large amount of dilution water, the construction of large-scale treatment facilities is also relatively expensive, such as peripheral equipment and ventilation facilities will increase the cost; 2) With direct treatment, the treatment effect of the sewage treatment system is often very unsatisfactory, and the effluent is always unstable Reached the standard, brought adverse impact on the environment

Method used

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  • Livestock and poultry breeding wastewater treatment method
  • Livestock and poultry breeding wastewater treatment method
  • Livestock and poultry breeding wastewater treatment method

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Embodiment 1

[0047] Wastewater from a livestock and poultry farm, with a daily treatment capacity of 200m 3 / d, the raw water quality is shown in Table 1. The specific processing steps are as follows:

[0048] 1) Enter the livestock and poultry breeding wastewater into the regulating pretreatment tank, adjust the water quality and water volume, and add flocculant polymerized aluminum ferric sulfate according to 0.4% of the influent quality, mix evenly, enter the primary sedimentation tank for solid-liquid separation, and discharge the generated sludge;

[0049] 2) The supernatant liquid in the primary sedimentation tank enters the ammonia stripping tower for stripping to remove ammonia nitrogen accounting for 60-70% of the total nitrogen content;

[0050] 3) The effluent from the ammonia stripper enters the anaerobic hydrolysis tank, and the sludge in the secondary sedimentation tank is returned to the anaerobic hydrolysis tank according to 1% of the influent volume for anaerobic digesti...

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Abstract

The invention discloses a livestock and poultry breeding wastewater treatment method. The high-concentration livestock and poultry breeding wastewater is economically and efficiently treated by utilizing a packaged process formed by an adjusting pretreatment tank, a primary sedimentation tank, an ammonia stripping tower, an anaerobic hydrolysis tank, an anaerobic ammonia oxidation tank, a biological enhancement tank, an aerobic activated sludge tank, an anoxic tank, a secondary sedimentation tank, a flocculation precipitation tank and a dehydrator, thus ensuring smooth and stable treatment of the livestock and poultry wastewater, relieving the economic burden of farmers and simultaneously solving the pollution problem.

Description

technical field [0001] The invention relates to the field of high-concentration organic water treatment, in particular to a method for treating livestock and poultry breeding wastewater containing high nitrogen and phosphorus. Background technique [0002] As we all know, livestock and poultry breeding wastewater has a high concentration of organic matter and large fluctuations in water quality. At present, most of the livestock and poultry breeding wastewater is treated by conventional domestic sewage treatment processes. Based on the presence of high concentrations of organic matter and nitrogen components in the wastewater, generally: 1) Adopt dilution treatment, this method needs to use a large amount of dilution water, and treatment efficiency is very low. For example, to dilute livestock and poultry breeding wastewater with a BOD of 5000mg / L, 75 times of dilution water is required. In addition, in addition to the need for a large amount of dilution water, the construc...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 金大一刘志东吕子均
Owner WUXI XINDU ENVIRONMENTAL PROTECTION EQUIP
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