Novel livestock wastewater treatment process

Abstract

The invention discloses a novel livestock wastewater treatment process. According to the novel process, after being subjected to solid-liquid separation through a pretreatment system, livestock wastewater sequentially enters an efficient anaerobic treatment system, an MBR, an ultrafiltration system and a nanofiltration system to be treated, then effluent flowing out of the nanofiltration system enters a microalgae cultivation system for microalgae cultivation, and effluent flowing out of the microalgae cultivation system can meet discharge standards and is discharged. Through the novel livestock wastewater treatment process, ammonia nitrogen, phosphorus and COD in wastewater can be effectively removed to improve the effluent quality, and meanwhile, by-products with economic values such as biogas, humic acid and microalgae are obtained.

Description

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a livestock and poultry wastewater treatment process. Background technique

[0002] In recent years, with the adjustment of my country's agricultural structure and the advancement of agricultural industrialization, the large-scale and intensive livestock and poultry breeding industry has developed rapidly and has become an important part of my country's agricultural and rural economy. However, the development of these farms meets the requirements of It meets the large demand of urban residents for meat, poultry and egg food, and has also become an important source of pollution for polluting water bodies.

[0003] The annual discharge of wastewater from livestock and poultry farming in my country exceeds 10 billion tons, far exceeding the total discharge of industrial wastewater and domestic wastewater in the country. At the same time, the volume of livestock and poultry w...

Examples

Embodiment Construction

[0026] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are usually the conditions in routine experiments.

[0027] see figure 1 , is a process flow chart of a new process for treating livestock and poultry wastewater of the present invention, and the process for treating livestock and poultry wastewater comprises the following steps:

[0028] (1) Wastewater from livestock and poultry breeding enters the pre-treatment system to separate solid residues such as feces, wool, and fibers, and then enters a regulating tank. A mixer is installed in the regulating pond to make the wastewater homogeneous and even in volume thro...

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a livestock and poultry wastewater treatment process. Background technique

[0002] In recent years, with the adjustment of my country's agricultural structure and the advancement of agricultural industrialization, the large-scale and intensive livestock and poultry breeding industry has developed rapidly and has become an important part of my country's agricultural and rural economy. However, the development of these farms meets the requirements of It meets the large demand of urban residents for meat, poultry and egg food, and has also become an important source of pollution for polluting water bodies.

[0003] The annual discharge of wastewater from livestock and poultry farming in my country exceeds 10 billion tons, far exceeding the total discharge of industrial wastewater and domestic wastewater in the country. At the same time, the volume of livestock and poultry w...

Examples

Embodiment Construction

[0026] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are usually the conditions in routine experiments.

[0027] see figure 1 , is a process flow chart of a new process for treating livestock and poultry wastewater of the present invention, and the process for treating livestock and poultry wastewater comprises the following steps:

[0028] (1) Wastewater from livestock and poultry breeding enters the pre-treatment system to separate solid residues such as feces, wool, and fibers, and then enters a regulating tank. A mixer is installed in the regulating pond to make the wastewater homogeneous and even in volume thro...

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