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A method suitable for comprehensive treatment of manure and sewage in small and medium-sized livestock farms

A comprehensive treatment and farm technology, which is applied in the field of comprehensive treatment of manure and sewage in small and medium-sized livestock farms, can solve the problems of narrow application range, and achieve the effects of low operating cost, low energy consumption and low investment

Active Publication Date: 2021-11-26
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the characteristics of manure produced by small and medium-sized livestock farms and the narrow applicability of a single manure treatment method, the applicant has searched a large number of domestic and foreign literature, and on the basis of a large number of experimental verifications, proposed a method suitable for small and medium-sized livestock Method for comprehensive treatment of farm manure

Method used

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  • A method suitable for comprehensive treatment of manure and sewage in small and medium-sized livestock farms
  • A method suitable for comprehensive treatment of manure and sewage in small and medium-sized livestock farms
  • A method suitable for comprehensive treatment of manure and sewage in small and medium-sized livestock farms

Examples

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Effect test

Embodiment 1

[0048] Take a pig farm with 1,500 live pigs, including about 100 sows, as an example. The annual pig manure output of the pig farm is about 650 tons, the actual collectable amount is about 600 tons, and the annual sewage production is about 4,400 tons. The pig farm has built a total volume of 300m 3 1 biogas digester with a total volume of 70m 3 sewage storage tank, 170m 3 aeration tank, 216m 3 biogas slurry storage tank and 120m 2 There is one dry manure dump, and there is also a fish pond with an area of ​​about 20 mu. The pig farm has only ten acres of farmland, but there is a large amount of farmland near the pig farm, which is suitable for using this process to treat manure.

[0049] According to the requirements of this process, the manure collection, storage and treatment facilities in the pig farm will be transformed, and the rainwater and domestic sewage collection pipe network will be added. The construction content includes: ①according to the requirements of ra...

Embodiment 2

[0052] Take a pig farm with 1,500 pigs as an example. The pig farm produces 650 tons of pig manure per year, the actual collectable volume is 600 tons, and the annual sewage production is 4,400 tons. The pig farm has been built with a total volume of 500m 3 1 biogas tank, 6 biogas slurry storage tanks, with a total volume of 2200m 3 , dry manure storage shed 200m 2 ; There are 5 ponds between the two pig houses in the field, with a total volume of 800m 3 , are currently in an abandoned state; the total volume is 120m 3 rainwater pool; total volume 100m 3 The three-compartment septic tank; there is another area outside the breeding area with an area of ​​5600m 2 pond. The pig farm itself has no farmland, but there is a large amount of farmland nearby, which meets the conditions for using this process to treat manure. There is no land for expansion in the pig farm, so the manure treatment facilities can only be rebuilt under the existing conditions, and the sewage treatmen...

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Abstract

The invention discloses a method suitable for the comprehensive treatment of manure and sewage in small and medium-sized livestock farms. The manure is fermented through aerobic composting or retting and then transported to the field; livestock breeding sewage is treated through a methane tank or a three-compartment septic tank. The generated biogas residue is composted or composted with manure and returned to the field, and the generated biogas slurry enters the biogas slurry storage tank. The biogas generated by the biogas slurry storage tank is dehydrated and desulfurized together with the biogas produced by the biogas tank or three-compartment septic tank. For domestic energy use on the site, part of the biogas slurry in the biogas slurry storage tank is transported to the field; domestic sewage and another part of the biogas slurry enter the aeration tank for treatment, and the effluent from the aeration tank enters the plant pond, ecological ditch and ecological pond in turn; The rainwater and the effluent of the ecological ditch enter the ecological pond together, and the effluent of the ecological pond is used as washing water for the pens in the farm, and part of it is directly discharged. The method takes the biological method and the ecological treatment method as the core, and at the same time solves the problem of the treatment and outlet of production and domestic manure in the farm, and has great promotion and utilization value.

Description

technical field [0001] The invention belongs to the field of environmental protection and development and utilization of renewable resources, and in particular relates to a method suitable for comprehensive treatment of manure in small and medium-sized livestock farms. Background technique [0002] With the rapid development of my country's economy and the improvement of people's living standards, the consumption of meat products has increased year by year. While livestock breeding provides residents with meat products, a large amount of livestock manure produced during the breeding process will pollute the surrounding water, soil and air environment and become an important source of environmental pollution if it is not properly treated and disposed of in a timely manner. According to the data of the first national survey of pollution sources, agricultural non-point sources have surpassed industrial sources to become the largest pollution source of environmental pollution in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/04C02F3/28C02F9/14C02F101/16C02F101/10C02F103/20
CPCC02F3/28C02F3/32C02F7/00C02F9/00C02F11/04C02F2101/105C02F2101/16C02F2103/20C02F2209/08
Inventor 陈广银李敬宜王晓英杨素昭吴思雅陈怡欣
Owner ANHUI NORMAL UNIV