Livestock breeding waste water treatment method

A technology for livestock and poultry breeding wastewater and a treatment method, applied in the field of sewage treatment, can solve the problems of low wastewater treatment efficiency, difficult separation of algae water, low treatment efficiency, etc., to improve treatment efficiency and impact resistance, reduce operating costs, The effect of enhancing the light intensity

Active Publication Date: 2016-12-14
CHONGQING UNIV
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Problems solved by technology

[0009] The purpose of the present invention is to solve the problems of low wastewater treatment efficiency, c

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[0042] The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the subject of the present invention is limited to the following examples. Without departing from the above-mentioned technical ideas of the present invention, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present invention.

[0043] Collect wastewater from a livestock and poultry breeding base in Southwest China for treatment, the wastewater has high N and P content; NH 3 -N concentration ranges from 780 to 1520mg / L, with an average concentration of 868mg / L; total phosphorus concentration ranges from 101 to 245mg / L, with an average concentration of 171mg / L.

[0044] Such as figure 1 Shown, a kind of livestock and poultry breeding wastewater treatment method is characterized in that: take the granular bacteria and alg...

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Abstract

The invention discloses a livestock breeding waste water treatment method. The method comprises the steps that a waste water treatment system comprising a methane tank, a solid-liquid separator, a regulating tank, a sand filter tank, a granule bacterium algae reaction tank and a sedimentation tank is built; in the granule bacterium algae reaction tank, under the condition suitable for culture, an IC internal circulation vortex flow is formed in the bacteria and algae reaction tank by changing the hydraulic condition, the action of the vortex flow enable microalgae and activated sludge to be mutually wrapped together, and bacteria and algae granule micelle which takes sludge as the core and is wrapped by the microalgae is formed finally. The granule bacterium algae system can greatly increase the biomass of the algae reaction tank, and the livestock breeding waste water treatment efficiency is improved; meanwhile, good settling performance is achieved, the advantages of rapid algae-water separation and the like can be achieved through an ordinary gravity sedimentation tank, and a good treatment effect on treating livestock breeding waste water which is high in nitrogen and phosphorus content is achieved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a method for treating livestock and poultry breeding wastewater with a granular bacteria and algae system as the core. Background technique [0002] In the national standard released in 2014, the discharge standard of livestock and poultry breeding wastewater will be more stringent. At present, the treatment of livestock and poultry wastewater is mainly based on biological methods, including anaerobic and aerobic treatment. [0003] Although the traditional SBR process, contact oxidation method and oxidation ditch process can better remove COD, SS, etc. in livestock and poultry wastewater, the removal effect on nitrogen and phosphorus is poor. [0004] Effect of anaerobic-aerobic-constructed wetland combined process on COD and BOD of livestock and poultry breeding wastewater 5 And SS treatment effect is very good, but it has the disadvantages of low nitrogen and phosphorus remov...

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Application Information

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IPC IPC(8): C02F9/14C02F3/32
CPCC02F1/001C02F3/28C02F3/325C02F9/00C02F2001/007C02F2203/004Y02E50/30
Inventor 翟俊刘国涛肖海文韦布波赵宇婷李杰黎小廷汪昆平罗志勇杨忠平
Owner CHONGQING UNIV
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