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Sewage processing process using active microbial agent

A technology of sewage treatment and active bacteria, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of complex sewage composition, long time, low sewage treatment efficiency, etc. , to improve the processing efficiency

Active Publication Date: 2020-04-10
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 existing technical solutions have the following defects: the components in the sewage are relatively complex, in order to remove the main pollutants such as COD, nitrogen and phosphorus in the sewage, it needs to go through multiple treatment units, the whole sewage treatment process takes a long time and the sewage treatment Buildings and equipment occupy a large area, resulting in low sewage treatment efficiency, so a sewage treatment process that can shorten the sewage treatment process is required

Method used

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  • Sewage processing process using active microbial agent
  • Sewage processing process using active microbial agent
  • Sewage processing process using active microbial agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The invention discloses a sewage treatment process using an active bacterial agent, which comprises the following process steps:

[0062] S1: Sewage is initially filtered through the grille;

[0063] S2: The sewage after preliminary filtering in step S1 is passed into the regulating tank for regulation;

[0064] S3: The sewage regulated by the regulating tank in step S2 enters the granulated sludge tank for treatment, and the granulated sludge tank is added with granulated sludge;

[0065] S4: The sludge treated in the granulated sludge tank in step S3 is discharged into the secondary settling tank for sedimentation. In step S4, the qualified sewage is directly discharged, and in step S4, the sewage whose water quality index is unqualified in the secondary sedimentation tank is directly returned to the granulated sludge tank for secondary treatment. In step S4, the middle layer sludge in the secondary sedimentation tank enters the front end of the granulated sludge ta...

Embodiment 6

[0093] The difference between Example 6 and Example 1 is that the granulated sludge in the secondary settling tank is not refluxed.

[0094] The difference between Embodiment 7-10 and Embodiment 1 is that the volume ratio of each component in the carrier is calculated as the following table:

[0095]

[0096] The difference between embodiment 11-14 and embodiment 1 is that the percentage by weight of each component in the bacterial agent is calculated as the following table:

[0097]

[0098]

Embodiment 15

[0099] The difference between Example 15 and Example 1 is that the composite COD bacteria are Bacillus coagulans, Bacillus subtilis, Bacillus pumilus and Lactobacillus acidophilus with the same weight percentage.

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Abstract

The invention relates to a sewage processing process using an active microbial agent, and belongs to the technical field of sewage processing, the sewage processing process comprises the following process steps: S1: sewage is preliminarily filtered by a grid; S2, the sewage preliminarily filtered in the step S1 enters an adjusting tank to be adjusted; S3, the sewage adjusted by the adjusting tankin the step S2 is introduced into a granulation sludge tank for processing, granulation sludge is added into the granulation sludge tank, and the granulation sludge comprises the following raw materials in parts by weight: 100-120 parts of a carrier and 20-30 parts of a microbial agent; and S4, discharging the sludge treated by the granulated sludge tank in the step S3 into a secondary sedimentation tank for sedimentation, directly discharging qualified sewage in the secondary sedimentation tank, refluxing unqualified sewage in the secondary sedimentation tank into the granulated sludge tank for secondary processing, and directly discharging lower-layer sludge in the secondary sedimentation tank. The process has the effect of shortening the sewage processing process.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment process using active bacterial agents. 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 lake, the water environment of our country has been seriously polluted and destroyed. The discharge of urban domestic wastewater is also increasing with the construction and development of cities. Although a large number of control measures have been taken i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F9/14C08B37/04
CPCC02F3/34C02F9/00C08B37/0084C02F2305/06C02F2209/08C02F2209/18C02F2209/14C02F2003/001
Inventor 郑勇生郑言言文炫
Owner 浙江永续环境工程有限公司