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Method used for processing ammonia-nitrogen wastewater with blue algae and CANON

An ammonia nitrogen wastewater, cyanobacteria technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sewage multi-stage treatment, etc., to achieve the effect of recyclable by-products, low energy consumption, and harmless treatment

Inactive Publication Date: 2017-08-15
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the process of its industrial development, the dehydration and detoxification of cyanobacteria has gradually become the bottleneck of the resource utilization of cyanobacteria.

Method used

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  • Method used for processing ammonia-nitrogen wastewater with blue algae and CANON
  • Method used for processing ammonia-nitrogen wastewater with blue algae and CANON
  • Method used for processing ammonia-nitrogen wastewater with blue algae and CANON

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1: Growth and denitrification and phosphorus removal effects of cyanobacteria under different nitrogen-to-phosphorus ratio conditions

[0027] Reaction conditions: In this experimental study, Microcystis aeruginosa, the dominant population of cyanobacteria in Taihu Lake, was selected as the research object. The experiment lasted for 15 days. 8.9, TP concentration is 10mg / L, TN concentration is respectively 50mg / L, 100mg / L, 150mg / L, 200mg / L, 250mg / L, 300mg / L the growth situation of Microcystis aeruginosa and the effect on artificial sewage The removal effect of nitrogen and phosphorus elements.

[0028] The results of the growth of Microcystis aeruginosa are as follows: figure 1 As shown, as the number of days increases, Microcystis aeruginosa enters the logarithmic growth period on the 2nd to 4th day, and the dry matter of the algae increases from 1 g / L to 3 to 4.5 g / L after 15 days. Combined with the calculation of relevant growth parameters, it can be known ...

Embodiment 2

[0032] Example 2: Growth of cyanobacteria and denitrification and phosphorus removal effects under different aeration conditions

[0033] Reaction conditions: In this experimental study, Microcystis aeruginosa, the dominant population of cyanobacteria in Taihu Lake, was selected as the research object. The experiment lasted for 11 days. 8.9, the concentration of TP is 10mg / L, the concentration of TN is 150mg / L, the aeration rate is 0.6L / min, and the aeration conditions are 0% CO 2 , 5% CO 2 , 10% CO 2 , 15% CO 2 , 20% CO 2 The growth of Microcystis aeruginosa and the removal effect of nitrogen and phosphorus in artificial sewage.

[0034] The results of the growth of Microcystis aeruginosa are as follows: Figure 4 As shown, it can be seen from the figure that when CO 2 When the concentration is 0-10%, the growth of Microcystis aeruginosa is basically good, and it can enter the logarithmic growth period on the 4th to 6th day, and the dry matter of the algae increases fro...

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Abstract

The invention discloses a method used for processing ammonia-nitrogen wastewater with blue algae and CANON, and belongs to the technical field of nitrogen-containing waste water biological treatment. According to the method, ammonia-nitrogen wastewater is taken as raw water to be treated, and is delivered through a CANON reactor for processing; water discharged from the CANON reactor is delivered into an algae photobiological reactor, fresh blue algae is introduced into the algae photobiological reactor intermittently, and the blue algae is harvested regularly for further processing; water discharged from the algae photobiological reactor is divided into two parts, one part of the discharged water is delivered back into the CANON reactor, and the other part of the discharged water is delivered into a sedimentation basin, and enrichment and harvesting of blue algae are carried out for another time; the harvested blue algae is introduced into a LIPP tank for anaerobic digestion to produce biogas, the obtained biogas is subjected to desulphurization CO2-removing purifying, obtained biological natural gas methane is introduced into urban gas pipeline networks, obtained CO2 is delivered into the algae photobiological reactor as a carbon source of algae, and a, anaerobic digestion liquid obtained via reaction is delivered into the CANON reactor as raw water.

Description

technical field [0001] The invention discloses a process for treating ammonia-nitrogen wastewater with cyanobacteria combined with CANON, belongs to the technical field of biological treatment of nitrogen-containing wastewater, and particularly relates to a process for resource utilization of cyanobacteria and recycling of by-products in sewage treatment. Background technique [0002] Due to the arbitrary discharge of nitrogen in the environment, many pollution problems have been caused, such as the eutrophication of nitrogen and phosphorus, and ammonia is toxic to aquatic organisms, especially to higher organisms such as fish. In recent years, there have been many studies on nitrogen removal in sewage. At present, many studies on nitrogen and phosphorus removal are based on biological treatment process and different combinations of aerobic, anaerobic and anoxic zones, such as Bardenpho, A 2 O, UCT, SBR and their analog combination process 【1】 . [1] Yu Qiuyang. Experiment...

Claims

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Application Information

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IPC IPC(8): C02F9/14C12P5/02C02F101/16
CPCC02F3/302C02F3/322C02F2101/16C12P5/023Y02E50/30
Inventor 杨凤林陈昕
Owner DALIAN UNIV OF TECH
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