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Pig farming wastewater treatment method based on biomembrane

A technology for aquaculture wastewater and treatment methods, which is applied in biological water/sewage treatment, animal husbandry wastewater treatment, water/sewage treatment, etc., can solve the problems of poor separation effect, unstable operation, low treatment efficiency, etc., and saves infrastructure. The effect of investment, speeding up the governance process, and low operating costs

Inactive Publication Date: 2018-12-25
惠州市源茵畜牧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many kinds of high-concentration pollutants that are difficult to remove in the sewage of pig farms, and single measures cannot solve them, and comprehensive measures must be adopted
Judging from the operation effect of each treatment unit and combined process of the sewage treatment process, there are shortcomings such as low efficiency and unstable operation to varying degrees.
The main manifestations are: low load of anaerobic and aerobic reactors, large floor area, long residence time, and low treatment efficiency; poor solid-liquid separation in the front stage will often lead to blockage; the generated biogas is not effectively utilized; biochemical There is no special phosphorus removal process in the treatment section, and the subsequent coagulation and decolorization or oxidation ponds are not ideal for phosphorus removal, resulting in serious problems such as excessive phosphorus in the effluent

Method used

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  • Pig farming wastewater treatment method based on biomembrane
  • Pig farming wastewater treatment method based on biomembrane
  • Pig farming wastewater treatment method based on biomembrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A biofilm-based method for treating pig breeding wastewater is characterized in that it comprises the following steps:

[0037] S1. Send aquaculture wastewater to a biogas digester for anaerobic fermentation; decompose pollutants to produce biogas, which is reused as energy.

[0038] S2. Collect the biogas slurry and biogas residue after biogas fermentation into the collection tank, and then separate the solid and liquid;

[0039] S3. The biogas residue after solid-liquid separation is processed into bio-organic fertilizer; it is used in farmland to save agricultural fertilizer expenditure.

[0040] S4. The biogas slurry enters the sedimentation tank to further remove the fine suspended solids; the solids are manually cleaned up regularly for use as fertilizer.

[0041] Among them, S3 and S4 are performed simultaneously;

[0042] S5. Through the sewage photocatalytic water bridge oxidation sloping plate, the sewage from the sedimentation tank is oxidized by sunlight through photoc...

Embodiment 2

[0063] This embodiment adopts the same biofilm-based pig breeding wastewater treatment method as in embodiment 1, except that in step S8, the artificial biofilm includes the following components by weight: hydroxymethyl Cellulose 20, sodium alginate 16, polyvinyl alcohol 13, graphene particles 33, molecular sieve 55, straw fibers 18, plant endophytes 9. The molecular sieve is any molecular sieve with strong adsorption in the prior art, and the plant endophyte is an anaerobic microbial plant endophyte in the prior art.

[0064] In the present invention, the preparation method of the biofilm is: preparing polyvinyl alcohol into a fibrous shape, and knitting hydroxymethyl cellulose, straw fibers, and polyvinyl alcohol fibers through warp knitting or weft knitting in weaving. Form a spatial network structure, and then fill the pores of the network structure with sodium alginate, graphene particles, molecular sieves, and plant endophytes, and heat to soften the fibers in the spatial n...

Embodiment 3

[0067] This embodiment adopts the same biofilm-based pig breeding wastewater treatment method as in embodiment 1, except that in step S8, the artificial biofilm includes the following components by weight: hydroxymethyl Cellulose 35, sodium alginate 24, polyvinyl alcohol 25, graphene particles 42, molecular sieve 83, straw fiber 29, plant endophyte 17. The molecular sieve is any molecular sieve with strong adsorption in the prior art, and the plant endophyte is the aerobic microbial plant endophyte in the prior art.

[0068] In the present invention, the preparation method of the biofilm is: preparing polyvinyl alcohol into a fibrous shape, and knitting hydroxymethyl cellulose, straw fibers, and polyvinyl alcohol fibers through warp knitting or weft knitting in weaving. Form a spatial network structure, and then fill the pores of the network structure with sodium alginate, graphene particles, molecular sieves, and plant endophytes, and heat to soften the fibers in the spatial net...

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Abstract

The invention provides a pig farming wastewater treatment method based on biomembrane, comprising the steps of S1, conveying framing wastewater into a biogas digester for carrying out anaerobic fermentation; S2, collecting biogas slurry and residue from biogas fermentation, feeding them into a collection tank, and carrying out solid-liquid separation; S4, feeding the biogas slurry into a precipitating tank; S5, passing the biogas slurry through a wastewater photocatalytic water-bridge oxidation sloping plate; S6, removing phosphorus and nitrogen from an aeration conditioning tank; S7, feedingthe wastewater that is aerated and conditioned into artificial biomembrane primary-to-tertiary treating tanks. Different microbes are utilized to intensively degrade pollutants, thereby removing COD and BOD in the wastewater and removing nitrogen by denitrification. The artificial biomembrane is used as a core technique herein; a wastewater integrated treatment scheme with the treatment with threestages of artificial membrane cooperating with the related technical means, such as phosphorus removal and nitrogen removal is utilized; output is created based on input in wastewater treatment, andvalue can be created.

Description

Technical field [0001] The invention belongs to the technical field of breeding wastewater treatment, and specifically relates to a biofilm-based method for treating pig breeding wastewater. Background technique [0002] Many researchers have done a lot of research on the sewage treatment technology of pig farms in my country, but so far there is no effective and low-cost treatment method widely used. For example, the investigation report on the wastewater treatment of six large-scale pig farms in the Shima River Basin pointed out: the six pig farms have wastewater treatment facilities, and the processes used are similar, which can be summarized as solid-liquid separation + anaerobic biochemical treatment + good Oxygen biochemical treatment + follow-up treatment; the follow-up process mainly uses oxidation pond or flocculation sedimentation. These treatment methods have varying degrees of removal effects on most pollutants, but the effluent water quality still cannot meet the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/20
CPCC02F1/001C02F1/725C02F3/2806C02F3/30C02F3/32C02F9/00C02F2103/20C02F2303/04
Inventor 张元英陈宁
Owner 惠州市源茵畜牧科技有限公司
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