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Black film biogas digester, and culture wastewater treatment system and treatment method

A technology for aquaculture wastewater and biogas digesters, which is applied in animal husbandry wastewater treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of easy damage to equipment, easy corrosion of steel plates, etc., and achieve a processing capacity Large size, high safety factor and low energy consumption

Pending Publication Date: 2021-03-30
CITIC CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ground-type steel structure processing equipment has problems such as easy corrosion of steel plates, easy damage to equipment, and high operating costs

Method used

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  • Black film biogas digester, and culture wastewater treatment system and treatment method
  • Black film biogas digester, and culture wastewater treatment system and treatment method
  • Black film biogas digester, and culture wastewater treatment system and treatment method

Examples

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Effect test

Embodiment 1

[0075]A farmed wastewater treatment system provided in this example, including: solid-liquid separation system, aerobic composting system, anaerobic response system. Among them, the anaerobic reaction system includes a black miogas tank. Such asfigure 1 As shown, the black membrane biogas tank 10 includes a pit base 1, a geotextile 2, a lower black film 3, an upper black film 4, a blind tube 7, an air passage 5, and a guide tube 6. Among them, one end of the blind tube 7 is disposed at the bottom of the pit base 1 and located below the geotextile 2, and the other ends along the pit foundation 1 to the pit foundation 1, for eliminating the effect of groundwater on the underlying black film 3 of the biogas tank.

[0076]Such asfigure 1 As shown, the pit foundation of the black membrane biogas tank 10 is: 82m * 116m * 5m (width * long * height), the slope is 1: 2, laying a layer of geotextile 2 on the pit base 1, then lower black The film 3 is laid on the geotextile 2, which is filled wit...

Embodiment 2

[0083]In this embodiment, the aquaculture wastewater treatment method is provided, and the aquaculture wastewater treatment system provided in Example 1 includes:

[0084]Solid-liquid separation step: for solid-liquid separation of cultured stain to obtain solid phase contaminants and liquid phase wastewater;

[0085]Anaerobic treatment steps: for anaerobic fermentation of liquid phase wastewater after solid-liquid separation to obtain liquid fertilizer;

[0086]The anaerobic fermentation reaction is carried out in the black membrane biogas tank 10. The specific content is as follows:

[0087]After processing the breeding dung pollution from the pig farm, the cultured stain is separated by solid-liquid separation, the solid phase is carried out, producing organic fertilizer, and the liquid phase enters the black miperm biogas tank for anaerobic fermentation. The average water quality of the liquid phase enters the black film is COD: 52800mg / L, NH4+-N: 4800mg / L.

[0088]The liquid phase breedin...

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Abstract

The invention provides a black film biogas digester, and a culture wastewater treatment system and treatment method. The black film biogas digester comprises a pit foundation, geotextile, a lower-layer black film, an upper-layer black film, a gas guide channel and gas guide pipes, wherein the lower-layer black film is laid on the geotextile; the upper-layer black film is laid on the lower-layer black film; after the edges of the upper-layer black film and the lower-layer black film are fixed, a closed space is formed between the upper-layer black film and the lower-layer black film and is usedfor accommodating fermented materials; the gas guide channel is suspended in an object to be fermented and is used for playing a supporting role and diffusing biogas to the gas guide pipes; and the gas guide pipes are arranged around the upper edge of the pit foundation and are used for discharging biogas generated in the biogas digester outwards. The culture wastewater treatment system comprisesa solid-liquid separation unit and an anaerobic reaction unit; the anaerobic reaction unit comprises the black film biogas digester; the black film biogas digester is free of concrete, and the problems of water seepage, water leakage, gas leakage and the like caused by shrinkage and spalling of a concrete biogas digester due to temperature change are solved; and the culture wastewater treatment system is low in energy consumption, large in treatment capacity and high in safety coefficient.

Description

Technical field[0001]The present invention relates to the field of wastewater treatment environmental protection, and more particularly to a black miogas biogas tank comprising a cultured wastewater treatment system and treatment method for black-membrane biogas tanks.Background technique[0002]At present, my country's livestock and poultry feces annual output is about 3.8 billion tons, which brings a lot of farming wastewater, but if the treatment is not good, it will bring a serious negative impact on the environment and resident life. Depending on the cleaner (ie, water punch, bubble and dry feces), the water quality characteristics of cultured wastewater are also different. Among them, dry dung has ammonia nitrogen (NH4+-N) The concentration is high and the carbon nitrogen ratio (C / N) is low, and the organic matter concentration of water screwingure and the wastewater of the water and bubbles is high, and it is generally necessary to remove some organic matter by anaerobic proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F103/20
CPCC02F3/2866C02F2103/20
Inventor 申献江郝彤遥史和平赵飞翔李艳
Owner CITIC CONSTR