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Bacteria and algae-attached biological fiber bed and its preparation method and its method for strengthening the treatment of swine wastewater for denitrification and dephosphorization

A bio-fiber bed and bio-fiber technology is applied in the field of biotechnology treatment of high-nitrogen aquaculture wastewater, which can solve the problems of restricting the development of SBBR, unsatisfactory bacterial and algal biota adhesion, and high cost of fillers, and achieves a large amount of microorganism adhesion and resistance to water flow. The effect of strong impact ability and stable population

Active Publication Date: 2022-04-29
HARBIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the defects of high filler cost and unsatisfactory bacteria and algae biota attachment effect in the existing SBBR technology, thereby limiting the development of SBBR, and provides a bacteria and algae attached biological fiber bed and its preparation method and its enhanced treatment for denitrification of swine wastewater Phosphorus removal method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: In the present embodiment, the preparation method of bacteria and algae attached type biological fiber bed is completed through the following steps:

[0026] Step 1. Take fresh corn stalks, peel and core them, cut them into 0.8cm long pieces, pretreat 47g of corn stalk cores in a high-pressure steam sterilizer at 121°C for 50 minutes, and add the concentration according to the ratio of 1g:15ml to liquid 0.15mol / L mixed solution A, stirred for 15min; then washed with deionized water until the lotion was neutral, filtered, discarded the supernatant, kept the solid, and after drying, naturally dried to constant weight to obtain the carrier;

[0027] Wherein, mixed solution A is made of MgO, MgCl in step 1 2 and distilled water configuration, the mass concentration of the MgO is 7.2%, the MgCl 2 The mass concentration is 2.4%.

[0028] Step 2, fix the core rack after the step 1 treatment in the SBBR (the height of the reactor: 20cm, the diameter: 18.5cm, the...

Embodiment 2

[0030] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mixed algae is obtained from the algae in the still pond around the pig farm. Other steps and parameters are the same as in the first embodiment.

[0031] Adopt following experiment to verify inventive effect:

[0032] Three groups of reactors were run in parallel respectively: #1SBR (without adding the carrier filler and algae of Example 1), #2SBBR (with the carrier filler of Example 1, without adding algae), #3A-SBBR (with the addition of the carrier filler and algae for implementation Carrier filler described in example 1, and add the described algae of 1), domesticate according to the method of embodiment 1, then strengthen the method for denitrification and dephosphorization of swine waste water to carry out inflow, aeration, sedimentation in the above-mentioned reactor successively And drainage treatment, the reaction parameters of the treatment process: the cycle period is 12h, the...

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Abstract

The invention discloses a bacteria and algae attached biological fiber bed, a preparation method thereof and a method for intensifying the denitrification and dephosphorization of swine wastewater, and belongs to the technical field of treating high-nitrogen aquaculture wastewater by using biological technology. The invention aims to solve the defects of high filler cost and unsatisfactory adhesion effect of bacteria and algae biota existing in the existing SBBR technology. The bacteria and algae-attached biological fiber bed in the present invention is formed by using corn stalks as a carrier, inoculating swine wastewater with algae for biochemical treatment, and then inoculating activated sludge in a secondary sedimentation tank for gradient concentration acclimation. The method for treating swine waste water to remove nitrogen and phosphorus is to sequentially perform water inflow, aeration, sedimentation and drainage in a reactor. The invention is used in the field of high-nitrogen aquaculture wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of using biological technology to treat high-nitrogen aquaculture wastewater; in particular, it relates to a bacteria and algae-attached biological fiber bed, a preparation method thereof, and a method for intensifying the denitrification and phosphorus removal of swine wastewater. Background technique [0002] Rapid economic growth in developing countries and accelerated urbanization have led to increased demand for pig farming. According to China's 2016 data annual report, China's annual pig production exceeds 4.5 billion heads. Pig wastewater is the main type of agricultural wastewater, which is rich in nitrogen and phosphorus. The emergence of a large number of intensive livestock farms has led to a sharp increase in nitrogen and phosphorus emissions in pig wastewater. On the one hand, pig wastewater with high concentrations of nitrogen and phosphorus has great potential for nutrient recovery, and the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/12
CPCY02W10/10
Inventor 刘嘉丛东来于少鹏陈睿曦杨春雪史传奇梁雄伟
Owner HARBIN UNIV
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