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A sewage treatment device and process for cyclic sequence batch operation

A sewage treatment and sewage technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, sedimentation treatment, etc., to achieve good effect, low operating cost and good effect

Active Publication Date: 2018-09-11
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a sewage treatment device and process for cyclic sequence batch operation, to overcome the defects and deficiencies in the existing SBR reaction process technology, and to realize efficient removal of pollutants such as carbon, nitrogen and phosphorus in sewage at the same time. The invention has the advantages of low floor space, low investment, low operating costs, simple process maintenance and management, etc.

Method used

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  • A sewage treatment device and process for cyclic sequence batch operation
  • A sewage treatment device and process for cyclic sequence batch operation
  • A sewage treatment device and process for cyclic sequence batch operation

Examples

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Embodiment 1

[0038] The single pool operates with the traditional SBR process, and its flow chart is as follows Figure 4 shown. Sewage enters the first SBR pool 2, the second SBR pool 3, the third SBR pool 4 and the fourth SBR pool 5 from the central pool 1 respectively. A single SBR pool has five processes of water intake, reaction, sedimentation, drainage, and idleness. Batch operation. Multiple SBR pools run in parallel, and each SBR pool is independent of each other without interfering with each other.

Embodiment 2

[0040] The combination of four SBR pools and two pools operates in the form of CASS process, and its flow chart is as follows Figure 5 shown. The first SBR pool 2 and the third SBR pool 4 are used as sedimentation tanks in the later stage of the reaction, and the second SBR pool 3 and the fourth SBR pool 5 are used as reaction pools. The sewage first enters the central pool 1. After the sedimentation period, the sedimented sludge in the first SBR pool 2 and the third SBR pool 4 also flows back to the central pool 1. At this time, the central pool 1 acts as a biological selector, and then the sewage enters the second SBR. The pool 3 and the fourth SBR pool 5, the second SBR pool 3 and the fourth SBR pool 5 operate in a part-aerobic manner to carry out denitrification and denitrification activities. Then the mixed solution in the second SBR pool 3 enters the third SBR pool 4 through the gate, and the mixed solution in the fourth SBR pool 5 enters the first SBR pool 2 through t...

Embodiment 3

[0042] The four-pool combination operates in the form of A2 / O process, and its flow chart is as follows Figure 7 shown. The central pool 1 is an inlet pool, and the central pool 1 also serves as a regulating pool. The sewage treated in the central pool 1 first enters the first SBR pool 2, and the first SBR pool 2 operates in an anaerobic manner. The return sludge in 2 is anaerobic phosphorus released in the first SBR tank 2, and the organic matter in the influent is anaerobic ammonification at the same time. The water flow in the first SBR pool 2 continues to enter the second SBR pool 3 through the gate, and the second SBR pool 3 operates in a part-aerobic mode, while returning from the third SBR pool 4 to the central pool 1 through the gate, and the central pool 1 The raw sewage in the mixed solution enters the second SBR tank 3 through the gate, and denitrification and denitrification are carried out in the second SBR tank 3, and phosphorus release continues in the second...

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Abstract

The invention discloses a cycle sequencing batch operation sewage treatment plant and technology The core of the invention is that a plurality of SBR pools are arranged in a circle; and the central pool combines functions of water quality and quantity regulation, water distribution, sludge backflow, mixed liquor backflow and biological selection. An individual SBR pool performs different functions in the cycle operation. The sewage treatment plant provided by the invention can be operated in a conventional SBR, or in combination of a plurality of SBR pools. By control of parameters including water inlet, sludge backflow, mixed liquor backflow and dissolved oxygen, the technology can achieve operation of a plurality of processes including A / O, A2 / O, inverted A2 / O, VIP, CASS and Bardenpho, and reach good simultaneous treatment effects on various water quality and quantity and carbon, nitrogen and phosphorus pollutants in refractory industrial wastewater. The sewage treatment plant has compact structure and a small land occupation; and the technology of the invention has the advantages of low investment, low operation cost and easy operation and maintenance.

Description

technical field [0001] The invention relates to the field of sewage biological treatment process, in particular to a sewage treatment device and process (CSBR) based on the SBR reaction process for cycle sequence batch operation. technical background [0002] The SBR reaction process is a commonly used activated sludge sewage biological treatment process. [0003] The traditional SBR (sequencing batch activity method) reaction process consists of five processes: water intake, reaction, precipitation, drainage, and idleness. The entire process is composed of a reaction tank, and the reaction and precipitation processes are completed in this tank. The treatment effect of medium carbon source pollution is high. At the same time, the SBR process adopts a complete static sedimentation method in the sedimentation stage. There is no interference in the sedimentation process, and the mud-water separation effect is good. However, due to the sequential batch operation of one process ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F3/30C02F9/00C02F2001/007C02F2101/105C02F2101/16
Inventor 王西峰胡晓莲伍涛
Owner HUNAN UNIV OF SCI & TECH
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