System and method for treating high-organic-matter-content high-ammonia-nitrogen wastewater by UASB/A/MBBR (upflow anaerobic sludge blanket/anoxic/moving bed biofilm reactor) combined chemical process

A technology of organic matter and chemical method, applied in low-cost fields, can solve problems such as unsatisfactory purification effect, achieve low-cost and high-efficiency purification treatment, improve biodegradability, and save energy consumption

Inactive Publication Date: 2014-12-24
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of unsatisfactory purification effect of the existing systems and methods for treating high organic matter and high ammonia nitrogen wastewater, and provide a system and method for UASB / A / MBBR combined chemical method to treat high organic matter and high ammonia nitrogen wastewater

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  • System and method for treating high-organic-matter-content high-ammonia-nitrogen wastewater by UASB/A/MBBR (upflow anaerobic sludge blanket/anoxic/moving bed biofilm reactor) combined chemical process
  • System and method for treating high-organic-matter-content high-ammonia-nitrogen wastewater by UASB/A/MBBR (upflow anaerobic sludge blanket/anoxic/moving bed biofilm reactor) combined chemical process
  • System and method for treating high-organic-matter-content high-ammonia-nitrogen wastewater by UASB/A/MBBR (upflow anaerobic sludge blanket/anoxic/moving bed biofilm reactor) combined chemical process

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specific Embodiment approach 1

[0027] Specific Embodiment 1: In this embodiment, the UASB / A / MBBR combined chemical method for treating wastewater with high organic matter and high ammonia nitrogen includes UASB reactor 2, anoxic tank 3, MBBR reactor 4, sedimentation tank 7, middle sedimentation tank 5 and chemical The sedimentation tank 6 and the regulating tank 1 communicate with the water inlet located at the bottom of the UASB reactor 2 through the No. 1 water pipe 11, and a three-phase separator 2-1 is installed on the upper part of the UASB reactor 2, and the water outlet located at the upper part of the UASB reactor 2 Communicate with the first water inlet of anoxic tank 3 by No. two water pipes 12, and the water outlet of anoxic tank 3 top is connected to the water inlet of intermediate sedimentation tank 5 top by No. three water pipes 13, and the water outlet of intermediate sedimentation tank 5 is connected with chemical The water inlet of the sedimentation tank 6 is connected, the water outlet of t...

specific Embodiment approach 2

[0030] Embodiment 2: This embodiment differs from Embodiment 1 in that an anoxic tank 3 and a chemical precipitation tank 6 are provided with stirring devices.

specific Embodiment approach 3

[0031]Specific embodiment three: this embodiment is different from specific embodiment one or two in that a nitrifying liquid return pump is provided in the return pipe 17, and a sludge return flow is provided in the No. 1 sludge discharge pipe 21 and the No. 2 sludge discharge pipe 22 Pump.

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Abstract

The invention discloses a system and a method for treating high-organic-matter-content high-ammonia-nitrogen wastewater by a UASB / A / MBBR (upflow anaerobic sludge blanket / anoxic / moving bed biofilm reactor) combined chemical process, belongs to the field of industrial wastewater treatment and regeneration, and solves the problem of non-ideal purification effect of a conventional process for treating the high-organic-matter-content high-ammonia-nitrogen wastewater. The system comprises a UASB reactor, an anoxic pond, an MBBR, a settling pond, an intermediate settling pond and a chemical settling pond. According to the method, the anoxic pond is connected to the rear part of the MBBR; one part of outlet water of the anoxic pond enters the MBBR, another part of outlet water of the anoxic pond enters the intermediate settling pond, and sludge subjected to settling in the intermediate settling pond flows back to the MBBR. By an anaerobic and aerobic combined treatment method, MBBR anaerobic biological treatment equipment is arranged at the front end of a process, the biochemical performance of the wastewater subjected to anaerobic treatment is improved, organic matters in the wastewater are further removed by subsequent aerobic biological treatment, and the removal rates of COD (chemical oxygen demand) and ammonia nitrogen in the wastewater treated through the method can reach more than 95%.

Description

technical field [0001] The invention belongs to the field of industrial wastewater treatment and regeneration, and is specifically aimed at a low-cost and high-efficiency treatment system and process method for wastewater with high organic matter and high ammonia nitrogen. Background technique [0002] With the rapid development of my country's economy, the chemical industry and related industries are becoming more and more prosperous, and the waste water with high organic matter and high ammonia nitrogen is gradually increasing, which poses a serious threat to human health. Wastewater with high organic matter and high ammonia nitrogen widely exists in the food processing industry, which is characterized by complex components, not only containing raw materials for production, but also many side reaction products. The content of organic matter is high, among which the COD content is generally above 2000 mg / L, and the ammonia nitrogen concentration is several hundred millilite...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/16
Inventor 李相昆孙豆豆朱昆
Owner HARBIN INST OF TECH
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