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Falling water oxygen-enriched micro-aerobic sludge bed process and its wastewater treatment method

A sludge bed, oxygen-enriched technology, applied in water/sludge/sewage treatment, aerobic and anaerobic process treatment, biological water/sewage treatment, etc., can solve the problem of insufficient treatment technology, high treatment cost, and infrastructure investment Large problems, to achieve the effect of good physical and chemical structure and settlement performance, low treatment cost and investment saving

Active Publication Date: 2019-08-09
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the existing problems that the treatment technology for low C / N ratio and general C / N ratio wastewater is not perfect enough, and there are problems such as complex process, large investment in infrastructure, high energy consumption, high treatment cost, etc. Microaerobic sludge bed process and its wastewater treatment method

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  • Falling water oxygen-enriched micro-aerobic sludge bed process and its wastewater treatment method
  • Falling water oxygen-enriched micro-aerobic sludge bed process and its wastewater treatment method

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specific Embodiment approach

[0023] to combine figure 1 and 2 Description of this embodiment, the falling water oxygen-enriched micro-oxygen sludge bed process in this embodiment consists of a micro-oxygen sludge bed 1, a filler 2, a water drop drainage tank 3, an oxygen-enriched mud water return pool 4, an oxygen-enriched mud water return pipe 5, and a return Pump 6, check valve 7, micro-oxygen sludge bed inlet pipe 8, sedimentation tank 9, sedimentation tank outlet pipe 10 and excess sludge discharge pipe 11; the micro-oxygen sludge bed 1, filler 2, drop water drainage Groove 3, oxygen-enriched mud water return pool 4, oxygen-enriched mud water return pipe 5, return pump 6, check valve 7, micro-oxygen sludge bed water inlet pipe 8 constitute a treatment unit; the treatment unit is placed in the sedimentation tank 9, One or more treatment units can be set in the same settling tank 9; the micro-aerobic sludge bed 1 is arranged in a vertical columnar shape with an open top, and a filler 2 is provided insi...

Embodiment 1

[0029] Example 1: Combining figure 1 Illustrate present embodiment, the specific method that present embodiment utilizes the described device of specific embodiment to process low C / N ratio waste water is as follows:

[0030]Wastewater with low C / N ratio enters it from the bottom of microaerobic sludge bed 1 through the microaerobic sludge bed inlet pipe 8, and the pollutants in the wastewater are treated by the microaerobic bacteria in the filler layer 2, and the treated wastewater is discharged from the microaerobic sludge bed. The falling water drainage tank 3 on the top of the sludge bed 1 naturally falls to the oxygen-enriched mud water return pool 4 to realize the oxygen-enrichment process. The mud bed 1 provides oxygen for the microaerobic bacteria in it, the reflux ratio is 20:1, and the hydraulic retention time is 15h; the excess oxygen-enriched wastewater overflows into the sedimentation tank 9, and then overflows through the sedimentation tank 9, and is discharged f...

Embodiment 2

[0034] Embodiment 2: Combination figure 1 Illustrate present embodiment, the specific method that present embodiment utilizes the described device of specific embodiment to process general C / N ratio waste water is as follows:

[0035] Generally, the C / N ratio wastewater enters from the bottom of the microaerobic sludge bed 1 through the microaerobic sludge bed inlet pipe 8, and the pollutants in the wastewater are treated by the microaerobic bacteria group in the filler layer 2, and the treated wastewater is discharged from the microaerobic sludge bed. The falling water drainage tank 3 on the top of the sludge bed 1 naturally falls to the oxygen-enriched mud water return pool 4 to realize the oxygen-enrichment process. The mud bed 1 provides oxygen for the microaerobic bacteria in it, the reflux ratio is 30:1, and the hydraulic retention time is 12h; the excess oxygen-enriched wastewater overflows into the sedimentation tank 9, and then overflows through the sedimentation tank...

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Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a micro-aerobic biological treatment process and a method thereof for treating sewage. The micro-aerobic biological treatment process and the method thereof for treating the sewage aim at solving the problems that an existing wastewater treatment technique is not complete enough, high in energy consumption, high in running expense and complicated in process, and the like. In the process, a micro-aerobic sludge bed, a filling material, a drop flow guiding groove, an oxygen-enriched water refluxing tank, a refluxing pipe, a refluxing pump, a check valve, a water inlet pipe, a settling tank, a water outlet pipe and a residual sludge discharging pipe are provided. According to the method, a micro-aerobic environment is beneficial to the mutualism among an aerobic bacterium, an anaerobic bacterium and a facultative anaerobic bacterium; these cultures metabolize a pollutant in a synergistic manner; additionally, as oxygen participates in a biochemical reaction, the oxidizing action and the reducing action in a system can occur at the same time; the anaerobic respiration, the aerobic respiration, the nitrification and the denitrification are enabled to coexist in a treatment system; the system is subjected to oxygen enrichment by a drop procedure, so as to maintain an oxygen source in the sludge bed. The process and the method are compact in layout, and have a favorable application prospect in aspects of treating wastewater; the running space and the running expense are saved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a falling water oxygen-enriched micro-oxygen sludge bed process and a wastewater treatment method thereof. Background technique [0002] Most of my country's sewage treatment plants use the aerobic activated sludge process as the core treatment method, which has played a certain role in the denitrification of wastewater, but there are still many problems. For example, the complete nitrification of ammonia nitrogen requires a large amount of oxygen, and the aeration energy consumption of the blast aeration system can account for 40% to 50% of the total energy consumption of the water plant, and the reaction energy consumption is very high; for wastewater with a low C / N ratio, Additional organic carbon sources are required; the process is long, the investment in infrastructure is high, and the area occupied is large. Although the anaerobic reaction has the adv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
CPCC02F3/301C02F3/302
Inventor 岳秀萍张潇赵博玮
Owner TAIYUAN UNIV OF TECH
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