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Method and system for producing biogas through two-stage anaerobic processing of high-concentration waste

A treatment method and waste technology, which are applied in the field of high-concentration waste treatment methods and treatment systems, can solve the problems of high cost, poor treatment effect, and high energy consumption, and achieve the effects of improving productivity and reducing operating costs.

Inactive Publication Date: 2015-01-21
HANGZHOU QINGCHENG ENERGY ENVIRONMENTAL PROTECTION ENG
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Problems solved by technology

[0004] However, the current anaerobic digestion technology only adopts the first-stage anaerobic system to treat wastewater, which has high energy consumption, poor treatment effect and high cost.

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  • Method and system for producing biogas through two-stage anaerobic processing of high-concentration waste
  • Method and system for producing biogas through two-stage anaerobic processing of high-concentration waste
  • Method and system for producing biogas through two-stage anaerobic processing of high-concentration waste

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Embodiment 1

[0027] Pig farms are the most common and larger livestock and poultry farms. Pig manure and urine are representative of livestock and poultry wastewater, and the components of various livestock and poultry wastewater are roughly the same, so the present invention is also applicable to the treatment of other livestock and poultry wastewater. Therefore, in this embodiment, livestock and poultry wastewater is selected from pig farm wastewater.

[0028] Among them, livestock excrement includes livestock manure and urine; livestock wastewater includes livestock urine, part of excrement and flushing water.

[0029] figure 1 is the process roadmap of the present invention, figure 2 It is a schematic diagram of the process flow of the present invention. combine figure 1 and figure 2 It can be seen that the specific processing steps include:

[0030] 1) The main parameters of livestock wastewater after pretreatment by hydraulic screen and hydrolysis acidification tank are: COD 1...

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Abstract

The invention discloses a method and system for producing biogas through two-stage anaerobic processing of high-concentration waste, the processing method comprises the following steps: pretreating high-concentration livestock waste water in a pre-treatment pool; introducing the treated livestock waste water into a first stage anaerobic reactor, fermenting in a continuous stirred tank reactor to generate biogas; then introducing effluent into a secondary stage anaerobic reactor through an outlet pipe, completing water distributing, gas production and three-phase separating in an upflow anaerobic sludge blanket, purifying the generated biogas and then introducing biogas into production for usage; and introducing the processed effluent into a sedimentation basin for subsequent processing, and then discharging. The constructed two-stage anaerobic reactor can enforce the high efficiency anaerobic fermentation to high-concentration waste, thereby renewable energy biogas is generated, and effective processing of livestock and poultry waste water is realized simultaneously, and the selected material has the advantages of reliable quality, low cost and obvious energy effect.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a treatment method and system for high-concentration waste. Background technique [0002] The excrement of livestock and poultry farms is characterized by large discharge volume, high concentration of organic matter, and high SS content. At the same time, livestock and poultry wastewater has good biodegradability and anaerobic digestion is relatively easy. The use of anaerobic digestion technology to treat livestock and poultry wastewater to produce renewable energy—biogas, not only has a significant effect, but also can reduce, recycle and harmless the excrement of livestock and poultry farms, which is conducive to improving the environment and realizing important contribution to the sustainable development of the economy. [0003] Compared with other processing technologies, anaerobic digestion technology has great advantages: 1) Obvious comprehensive benefits: this technology...

Claims

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Application Information

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IPC IPC(8): C02F3/28C10L3/08
CPCC02F3/2846C02F3/286C02F3/30C02F2103/20Y02E50/30Y02W10/10
Inventor 吴赛明韦星任杨海洋袁良平
Owner HANGZHOU QINGCHENG ENERGY ENVIRONMENTAL PROTECTION ENG
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