Technique for treating sewage water of pig farm with grass

Abstract

The invention provides a technique utilizing forage grasses to treat pig farm sewage, the technique introduces warm-season perennial gramineous forage grasses and cool-season annual gramineous forage grasses for year-round planting and for treating sewage in pig farms; and the produced forage grasses are directly fed to pigs or added into mingled forage by different proportions after pulping for breeding pigs at different stages. The technique combines the pig farm pollution treatment technique and forage grass planting, and rationally utilizes culture wastes to develop the grass industry, change waste into valuables, realize the beneficial cycle of pig raising-biogas slurry-forage grasses, reach zero release of sewage in the breeding industry, and avoid the pollution of sewage to the environment in the breeding industry, and the forage grasses grown on the grassland have advantages of good quality, high output and obviously reduced production cost, and the forage grasses produced by adopting the method are used in animal husbandry, the costs for breeding livestock are also reduced obviously, the sewage treatment in pig farms can be realized, functions of forage grasses in environmental ecological safety and bioremediation can be achieved, and the technique has broad application prospect and outstanding economic benefit and environmental protection value.

Description

technical field [0001] The invention belongs to the treatment technology of pig farm sewage, and more specifically relates to a technology for using pasture to absorb pig farm sewage. Background technique [0002] Animal husbandry is the dominant industry and pillar industry of my country's rural economy, and the environmental problems associated with its rapid development have become increasingly prominent. The discharge of livestock and poultry waste has become one of the important sources of pollution affecting the improvement of my country's environmental conditions, especially the large number of pig farms, The scale is large and the discharge of sewage is large. At present, although many pig farms have introduced technologies such as biogas environmental engineering to treat sewage, there are still reasons why pollution control processes and pollution control projects cannot completely eliminate sewage, and the discharged treatment liquid cannot fully meet the discharge...

AI Technical Summary

Problems solved by technology

At present, although many pig farms have introduced technologies such as biogas environmental engineering to treat sewage, there are still reasons why the pollution control process and pollution control projects cannot completely eliminate the sewage, and the discharged treatment liquid cannot fully meet the discharge standards and still pollute the environment , resulting in soil nutrient enrichment, soil degradation, air pollution, water source and groundwater pollution and excessive nitrate content