A sewage treatment process using microbial carrier

A technology for microbial carrier and sewage treatment, which is applied in the treatment of granular microbial carrier, biological water/sewage treatment, and multi-stage water/sewage treatment. It can improve the efficiency of sewage treatment, make it difficult for sludge to expand, and accelerate the granulation process.

Active Publication Date: 2022-04-22
浙江永续环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned prior art scheme has the following defects: because it uses ordinary activated sludge, and ordinary activated sludge generally uses filamentous bacteria as the skeleton, and the bacterial micelles are composed of other functional bacteria.
However, in the process of actual use, this kind of activated sludge has weak ability to withstand high and low impact of incoming water, and once the filamentous bacteria multiply excessively, the number of filamentous bacteria may exceed the bacterial micelles, so that the sludge structure is loose and the quality becomes lighter. , the settling property decreases, which leads to the expansion of the sludge, resulting in a decrease in the quality of the sludge effluent

Method used

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  • A sewage treatment process using microbial carrier
  • A sewage treatment process using microbial carrier
  • A sewage treatment process using microbial carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The invention discloses a sewage treatment process using a microbial carrier, which comprises the following process steps:

[0068] S1: Sewage flows into the primary sedimentation tank for primary sedimentation to obtain primary sedimentation sewage.

[0069] S2: The sewage after the initial precipitation in step S1 is filtered through the grid and then flows into the granulated sludge tank for treatment. The granulated sludge tank is added with granulated sludge.

[0070] S3: The sludge treated in the granulated sludge tank in step S2 is discharged into the secondary sedimentation tank for secondary sedimentation.

[0071] The middle layer sludge in the secondary sedimentation tank enters the front end of the granulated sludge tank, and is mixed with the sewage that has undergone primary sedimentation in step S1 to obtain a mixed solution, which then flows into the granulated sludge tank for secondary sewage treatment.

[0072] The sludge in the lower layer of the sec...

Embodiment 18

[0102] The difference between Example 18 and Example 1 is that the microbial agent includes Bacillus coagulans, Bacillus natto, Bacillus subtilis, Bacillus cereus, Bacillus pumilus, Lactobacillus acidophilus, Lactobacillus plantarum, cloth Lactobacillus subtilis, Nitrosomonas, Nitrosospirillum, Bacillus licheniformis, Bacillus lateralis, Deinococcus aquaticus, Bacillus megaterium, Staphylococcus aureus, Bacillus highlander, Bacillus jelly-like, and the above-mentioned bacteria Accounting for 50% of the total weight of the bacterial agent.

Embodiment 19

[0103]The difference between Example 19 and Example 1 is that the microbial agent includes Bacillus coagulans, Bacillus natto, Bacillus subtilis, Bacillus cereus, Bacillus pumilus, Lactobacillus acidophilus, Nitrospirulina, Nitrosococcus, Nitrosococcus, Nitrospinus, Nitrococcus, Bacillus licheniformis, Bacillus lateralis, Deinococcus aquaticus, Bacillus megaterium, Staphylococcus aureus, Bacillus highlander, and the above-mentioned bacteria account for the total weight of the bacterial agent 50% of.

[0104] The difference between Embodiment 20-23 and Embodiment 1 is that the parts by weight of each component of the nutrient are calculated as the following table:

[0105]

[0106]

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Abstract

The invention relates to a sewage treatment process using a microbial carrier, which belongs to the technical field of sewage treatment and includes the following process steps: S1: sewage flows into a primary sedimentation tank for primary precipitation to obtain primary precipitated sewage; S2: after the initial precipitation in step S1 The sewage is filtered through the grid and then flows into the granulated sludge tank for treatment; S3: The sludge treated in the granulated sludge tank in step S2 is discharged into the secondary sedimentation tank for secondary sedimentation; S4: after the secondary sedimentation in step S3 After the sedimentation treatment in the secondary sedimentation tank, the sewage with qualified water quality indicators is discharged. The invention has higher high and low impact resistance of incoming water, and is not easy to produce the effect of sludge bulking.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment process using microbial carriers. Background technique [0002] Water pollution is one of the serious environmental problems that our country is currently facing. Since 1985, my country's annual wastewater discharge has been maintained at around 35 billion to 40 billion cubic meters. Among the wastewater discharged, only 10% of the domestic wastewater and 70% of the industrial wastewater are treated, and about half of the industrial wastewater treatment facilities fail to meet the national discharge standards, and the rest of the untreated wastewater is directly discharged into rivers In the lakes, the water environment in our country has been seriously polluted and destroyed; the discharge of urban domestic wastewater is also increasing with the urban construction and development. Although a large number of control measures have been taken in recent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/34
CPCC02F9/00C02F3/34C02F3/348C08B37/0084C02F1/001C02F2001/007C02F2305/06C02F2003/001C02F2209/08C02F2209/14C02F2209/18
Inventor 言红红郑言郑勇生
Owner 浙江永续环境工程有限公司
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