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A sewage treatment device, system and method

A technology of sewage treatment device and sewage treatment system, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of large energy consumption, short backwash cycle, sludge disposal Difficulties and other problems, to achieve the effect of reducing energy consumption, long backwashing cycle, and less sludge discharge

Inactive Publication Date: 2017-08-11
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a sewage treatment device, system and method, the purpose of which is to improve the ability to resist pollutant load, prolong the backwash cycle, reduce energy consumption, and achieve sludge emission reduction. Even zero discharge, thus solving the technical problems of difficult sludge disposal, short backwashing cycle and high energy consumption

Method used

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  • A sewage treatment device, system and method
  • A sewage treatment device, system and method
  • A sewage treatment device, system and method

Examples

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Effect test

Embodiment 1

[0028] A sewage treatment plant, such as figure 1 As shown, it includes a reaction column 1, an aerator 2, a water feeder 3, a water outlet 4 and a backwasher 5.

[0029] The reaction column 1 is vertically arranged, a water feeder 3 is arranged below it, an aerator 2 is arranged at the bottom, and a water outlet 4 is arranged above it, the water inlet pipe of the backwasher 5 is connected to the water feeder 3, and the backwasher 5 is connected to the water feeder 3 , The trachea of ​​the flushing device communicates with the air.

[0030] According to the direction of water flow from bottom to top, the reaction column 1 includes an activated sludge water purification area, a biofilm water purification area and a clean water area; the activated sludge water purification area accounts for 25% of the length of the reaction column 1. % to 30%, the biofilm water purification area accounts for 46% to 49% of the length of the reaction column 1, and the rest of the reaction column ...

Embodiment 2

[0038] A sewage treatment system such as figure 2 As shown, there are two sewage treatment devices, namely primary and secondary sewage treatment devices, and the plurality of sewage treatment devices are connected in series. The primary sewage treatment device is a sewage treatment device with aerobic operation, and the secondary sewage treatment device is a sewage treatment device with anoxic operation; the aerator 2 of the primary sewage treatment device is always aerated to realize the reaction The mixing of the water inflow from the column 1 and the sludge from the reaction column 1 and the maintenance of an aerobic environment; the aerator 2 of the secondary sewage treatment device is only aerated when it starts to operate.

[0039] Described primary sewage treatment device, its reaction column 1 height is 1000mm, and the height of activated sludge water purification area is 300mm, and the height of its biofilm water purification area is 460mm, and the height of clear w...

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Abstract

The invention discloses a sewage treatment device, system and method. The device includes a reaction column, an aerator, a water feeder and a water outlet; the reaction column is vertically arranged, with a water feeder below it, an aerator at the bottom, and a water outlet above it. According to the direction of water flow from bottom to top, it includes activated sludge water purification area, biofilm water purification area and clean water area; there is a permeable mud barrier between the activated sludge water purification area and biofilm water purification area. supporting layer. The system includes a plurality of sewage treatment devices connected in series. The method comprises the following steps: (1) start-up stage: inject activated sludge into the reaction column activated sludge area of ​​each sewage treatment device in the sewage treatment system, and carry out stuffy exposure; (2) continuous operation stage: according to the following principles Adjustment: The longer the running time, the greater the water intake and the greater the aeration. The invention has strong load capacity, long backwash cycle, low energy consumption and low sludge discharge.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and more specifically relates to a sewage treatment device, system and method. Background technique [0002] With the rapid expansion of the city, the sewage treatment plants originally located in the suburbs of the city are gradually surrounded by the newly developed urban areas. In addition, the implementation of new discharge standards has increased the discharge requirements for pollutants such as nitrogen and phosphorus, and most urban sewage treatment plants need to be upgraded. Due to the limitation of land use and the slogan of "energy saving and emission reduction", the expansion or renovation of sewage treatment plants must seek new processes and technologies with small footprint, high efficiency, and excellent energy saving. [0003] At present, sewage treatment mainly adopts biological aerated filter and activated sludge treatment. The biological aerated filter is favored in the conv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 周爱姣张玉陶涛
Owner HUAZHONG UNIV OF SCI & TECH
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