Device and process for biochemically denitrifying high-ammonia nitrogen tanning wastewater

A technology of tanning wastewater and treatment device, which is applied in the field of industrial wastewater treatment to achieve the effects of reducing energy consumption, low treatment and operation costs, and saving carbon sources

Inactive Publication Date: 2012-07-18
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The multi-stage A / O process has the characteristics of simple operation and management, flexible operation, impact load resistance, low treatment cost, and good nitrogen removal effect. report

Method used

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  • Device and process for biochemically denitrifying high-ammonia nitrogen tanning wastewater
  • Device and process for biochemically denitrifying high-ammonia nitrogen tanning wastewater
  • Device and process for biochemically denitrifying high-ammonia nitrogen tanning wastewater

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Embodiment 1

[0027] refer to figure 1 , a biochemical denitrification treatment device for high ammonia nitrogen tannery wastewater of the present invention, comprising a physical and chemical pretreatment unit 1, a biochemical pretreatment unit 2, a regulating pool 3, a three-stage anoxic / aerobic treatment unit 4 and a mud-water separation unit 5, The three-level anoxic / aerobic treatment unit 4 is formed by connecting three groups of anoxic and aerobic reaction units in series, and the reaction unit is composed of an anoxic reaction zone and an aerobic reaction zone in series, and the anoxic reaction zone at each level is A partition 41 is provided in the reaction zone and the aerobic reaction zone, and the partition separates the anoxic reaction zone from the upper part of the aerobic reaction zone and communicates with the lower part, and a partition 42 is arranged in the aerobic reaction zone and the anoxic reaction zone , the clapboard makes the upper part of the aerobic reaction zone...

Embodiment 2

[0037] refer to figure 2 , a biochemical denitrification treatment device for high ammonia nitrogen tannery wastewater of the present invention, comprising a physical and chemical pretreatment unit 1', a biochemical pretreatment unit 2', a regulating pool 3', a four-stage anoxic / aerobic treatment unit 4' and muddy water The separation unit 5', the four-stage anoxic / aerobic treatment unit 4' is composed of four sets of anoxic and aerobic reaction units in series, and the reaction unit is composed of an anoxic reaction zone and an aerobic reaction zone in series, The anoxic reaction zone and the aerobic reaction zone at all levels are provided with a partition 41', the partition separates the anoxic reaction zone from the aerobic reaction zone, and communicates with the lower part, and the aerobic reaction zone and the anoxic reaction zone at all levels are connected to each other. A partition 42' is arranged in the zone, and the partition connects the upper part of the aerobic...

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Abstract

The invention relates to the technical field of industrial wastewater treatment and provides a device and a process for biochemically denitrifying high-ammonia nitrogen tanning wastewater. The device and the process can effectively and synchronously remove chemical oxygen demand (COD), ammonia nitrogen and total nitrogen from the tanning wastewater. The device mainly comprises a materializing pre-treatment unit, a biochemical pre-treatment unit, an adjusting water pool, a multi-grade anaerobic / aerobic treatment unit and a sludge and water separating unit. The treatment process mainly relates to a tanning wastewater treatment process in which anaerobic biological treatment and aerobic biological treatment are mutually alternated and in multistage series operation.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a biochemical denitrification treatment device and process for high ammonia nitrogen tannery wastewater. Background technique [0002] Tannery industrial wastewater has the characteristics of large fluctuations in water quality and volume, high concentrations of organic pollutants and suspended solids, and a large amount of sulfide and heavy metal chromium. It is difficult to treat. How to effectively treat it has always been a difficult problem in the field of water treatment. For the treatment of tannery wastewater, the technical route of combining physical and chemical pretreatment and biochemical treatment is currently adopted, that is, the chromium-containing wastewater, sulfur-containing wastewater and other wastewater (comprehensive wastewater) from the tannery production process in the future will be collected separately and subjected to physical an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 李建政陈青松柯伟士李怀
Owner HARBIN INST OF TECH
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