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Technology for efficient anaerobic treatment of aquaculture wastewater

A technology for anaerobic treatment and aquaculture wastewater, which is applied in anaerobic digestion treatment, animal husbandry wastewater treatment, biological water/sewage treatment, etc. problems, to achieve the effects of long residence time of sewage, improvement of treatment efficiency, and acceleration of mass transfer rate

Inactive Publication Date: 2017-06-13
宋茂成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A large amount of organic waste is produced in the process of livestock and poultry breeding. These organic wastes contain a large amount of biomass energy and organic fertilizer resources. If they are directly discharged without treatment and comprehensive utilization, they will not only seriously pollute water sources, ecological natural environment, and manure. Overflowing water will lead to the spread of germs and will also limit the safety of production in the breeding area
[0003] The current livestock and poultry wastewater treatment process mainly follows the common high-concentration wastewater anaerobic treatment process, such as UASB, USR and other main processes, but the above-mentioned processes cannot solve the problem of high concentration of livestock and poultry wastewater, small water volume, and high concentration of suspended solids. characteristics, the treatment volume load is low, the efficiency is not high, and the effluent water quality cannot meet the established discharge requirements
[0004] There is no professional water treatment technology for the livestock and poultry breeding industry in China, and the current livestock and poultry breeding industry pollutes the water body seriously. It is necessary to treat the sewage and feces produced in the current breeding process in a harmless, reduced and resourceful manner. current trends
[0005] The operation effect of the anaerobic reactor is closely related to the complete mixing degree of the granular sludge and sewage inside the reactor. At the same time, there is a large amount of feces in the livestock and poultry wastewater, and the specific gravity of the feces is relatively large, so it is easy to settle at the bottom of the reactor and cause water ingress. Clogged water cloth, and will affect the long-term normal use of the reactor

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  • Technology for efficient anaerobic treatment of aquaculture wastewater
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  • Technology for efficient anaerobic treatment of aquaculture wastewater

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Experimental program
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Effect test

specific Embodiment approach

[0031] Functional introduction of each device:

[0032] Reactor---reaction vessel for the biological treatment of aquaculture wastewater. The granular sludge composed of anaerobic microorganisms in the reactor absorbs and decomposes the organic matter in the wastewater, and generates biogas while decomposing, so as to achieve the purpose of water purification;

[0033] Water distribution device -- transform one water inlet point into multiple water inlet points, so that they can be evenly distributed at the bottom of the reactor to achieve a uniform treatment effect;

[0034] The traditional anaerobic reactor design is generally in the form of point-to-point water distribution, using the gravity of water to flow into the reactor, but there is a large amount of feces in the aquaculture wastewater, and the flow rate of gravity flow is slow, which will cause feces to accumulate in the pipeline and block The water distribution pipeline affects the normal operation of the reactor. ...

Embodiment 1

[0042] Embodiment 1: high-efficiency anaerobic treatment process for aquaculture wastewater, comprising the following steps:

[0043] (1) The aquaculture wastewater enters the water distribution device from the bottom of the anaerobic reactor through the water inlet pipe, and the wastewater outlet points are evenly arranged in the entire reactor. The wastewater flows from bottom to top in the reactor, and passes through the granular sludge bed for bioanalysis. Oxygen treatment;

[0044] (2) The wastewater after biological anaerobic treatment enters the three-phase separator, and the pure liquid wastewater separated by the three-phase separator enters the outlet pipe through the outlet tank at the top of the reactor.

[0045] (3) The biogas separated by the three-phase separator enters the gas-water separator for gas-water separation, and the generated biogas is connected to the desulfurization device through the biogas pipeline for desulfurization and utilization;

[0046] (3...

Embodiment 2

[0051] Embodiment 2: high-efficiency anaerobic treatment process for aquaculture wastewater, comprising the following steps:

[0052] (1) The aquaculture wastewater enters the water distribution device from the bottom of the anaerobic reactor through the water inlet pipe, and the wastewater outlet points are evenly arranged in the entire reactor. The wastewater flows from bottom to top in the reactor, and passes through the granular sludge bed for bioanalysis. Oxygen treatment;

[0053] (2) The wastewater after biological anaerobic treatment enters the three-phase separator, and the pure liquid wastewater separated by the three-phase separator enters the outlet pipe through the outlet tank at the top of the reactor.

[0054] (3) The biogas separated by the three-phase separator enters the gas-water separator for gas-water separation, and the generated biogas is connected to the desulfurization device through the biogas pipeline for desulfurization and utilization;

[0055] (3...

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Abstract

The invention provides a technology for efficient anaerobic treatment of aquaculture wastewater. The technology is characterized by including that the aquaculture wastewater enters a water distributing device from the bottom of an anaerobic reactor, and a granular sludge bed is used for biological anaerobic treatment; the treated wastewater enters a three-phase separator, separated pure liquid wastewater is drained from a water outlet channel of the reactor, and separated methane enters a gas-water separator and then is connected to a desulfurizer for desulfurization via a methane pipeline; separated granular sludge enters a sludge drain device at the bottom of the reactor and is drained to a sludge sump via a sludge drain pipe. The technology for efficient anaerobic treatment of the aquaculture wastewater has the advantages that hydraulic load of the reactor is increased, the sludge bed is thickened, mass transfer rates of microorganisms and the wastewater are increased, wastewater stopping and contact time is longer, and the water outflow quality is improved.

Description

technical field [0001] The invention relates to a sewage treatment process, in particular to a high-efficiency anaerobic treatment process for aquaculture wastewater. Background technique [0002] A large amount of organic waste is produced in the process of livestock and poultry breeding. These organic wastes contain a large amount of biomass energy and organic fertilizer resources. If they are directly discharged without treatment and comprehensive utilization, they will not only seriously pollute water sources, ecological natural environment, and manure. The overflow of water will lead to the spread of germs and will also limit the safety of production in the breeding area. [0003] The current livestock and poultry wastewater treatment process mainly follows the common high-concentration wastewater anaerobic treatment process, such as UASB, USR and other main processes, but the above-mentioned processes cannot solve the problem of high concentration of livestock and poul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F103/20
CPCC02F3/2866C02F2103/20Y02E50/30
Inventor 宋茂成王喜春袁翠娟
Owner 宋茂成
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