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An ecological cycle treatment method for livestock farm wastewater

A technology of ecological cycle and treatment method, which is applied in the fields of animal husbandry wastewater treatment, water/sewage treatment, biological water/sewage treatment, etc. problems, to achieve the effect of saving ration, improving the structure of the ration, and improving the economic utilization rate

Inactive Publication Date: 2020-02-14
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For farms, especially livestock and poultry farms, the current waste treatment is generally direct discharge or biogas technology, that is, anaerobic treatment. Although biogas technology uses waste resources, there are still concentrated biogas liquids and biogas residues that are difficult to process. question
Biogas slurry and biogas residue generally need to be treated in factories, that is, to use environmental protection facilities and take high-energy intensive measures to degrade a large amount of organic matter in wastewater and biogas slurry, as well as to remove nitrogen and phosphorus, so that the effluent can meet the discharge requirements, but the investment in environmental protection facilities is large , High energy consumption and high maintenance costs
Therefore, although there are technologies for treating farm wastewater, they all require additional high investment, and basically have no economic benefits, so it is difficult to get real promotion and application
At present, there is no good developmental treatment of high value-added wastewater from farms, coupling the resource utilization of wastewater and biogas slurry with standard discharge, low-cost treatment of wastewater and biogas slurry, and recycling of nutrients , bringing certain economic benefits

Method used

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  • An ecological cycle treatment method for livestock farm wastewater
  • An ecological cycle treatment method for livestock farm wastewater
  • An ecological cycle treatment method for livestock farm wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, an ecological cycle treatment method for farm wastewater includes anaerobic treatment and three-stage biological purification, and the wastewater after anaerobic treatment is then subjected to three-stage biological purification. Anaerobic treatment adopts existing technical means, which are widely used in sewage treatment and biogas production. Under anaerobic conditions, organic matter in sewage is decomposed, metabolized, and digested by anaerobic bacteria, which greatly reduces the content of organic matter in sewage. At the same time Generate biogas. The three-level biological purification equipment includes a first-level purification pool 1 , a second-level purification field 2 , a third-level purification pool 3 , and a pipeline 4 . Such as image 3 As shown, one end of the pipeline 4 is open 41, and the other end is closed. The side wall of the pipeline 4 offers some outlets 42, and a flexible baffle 43 is set near the outlet 42. The...

Embodiment 2

[0041] Such as figure 2As shown, in this embodiment, on the basis of the previous embodiment, there are two primary purification pools 1, and the ryegrass planting time in the two primary purification pools 1 is staggered, and the irrigation is used in turn, and the water flow is maintained by reasonable water distribution. Time and stable purification.

[0042] In this example, if Figure 4 As shown, several outlets 42 on the pipeline 4 form a helical shape along the axial direction of the pipeline 4, and further several outlets 42 can be set to communicate with each other to form a helical outlet around the side wall of the pipeline 4 (the outlet is closed in the figure, and is closed by a flexible baffle. 43 cover). At this time, the several flexible flaps 43 preferably form a spiral shape along the several outlets 42 . The helical outlet increases the outlet area, and the helical flexible baffles are integrated into one body, so that the opening or closing force is mor...

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Abstract

An ecological cycle treatment method for livestock farm wastewater is disclosed. The method comprises anaerobic treatment and three-stage biological purification. Wastewater subjected to anaerobic treatment is then subjected to three-stage biological purification, and the three-stage biological purification comprises the steps of first-stage purification, second-stage purification and third-stagepurification. Pollutants in breeding wastewater are gradually absorbed and purified through multi-stage ecological treatment, the comprehensive utilization rate of breeding waste is increased, the cost is low, water resources are saved, grass is planted for breeding livestock, the economic utilization rate of land is increased, the industrial chain is prolonged, meanwhile, the daily ration structure of livestock and poultry can be improved, feed is saved, and the ecological benefit is good.

Description

technical field [0001] The invention relates to the technical field of farm wastewater treatment, in particular to an ecological cycle treatment method for farm wastewater. Background technique [0002] For farms, especially livestock and poultry farms, the current waste treatment is generally direct discharge or biogas technology, that is, anaerobic treatment. Although biogas technology uses waste resources, there are still concentrated biogas liquids and biogas residues that are difficult to process. question. Biogas slurry and biogas residue generally need to be treated in factories, that is, to use environmental protection facilities and take high-energy intensive measures to degrade a large amount of organic matter in wastewater and biogas slurry, as well as to remove nitrogen and phosphorus, so that the effluent can meet the discharge requirements, but the investment in environmental protection facilities is large , High energy consumption and high maintenance costs. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30C02F103/20
CPCC02F1/281C02F1/283C02F3/28C02F3/32C02F9/00C02F2101/30C02F2103/20
Inventor 刘芳刘元生陈祖拥朱健
Owner GUIZHOU UNIV
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