Process for treating coking wastewater by combining Fenton oxidation and constructed wetland plants

A technology of constructed wetland and Fenton oxidation, applied in special compound water treatment, biological water/sewage treatment, filtration treatment, etc., to achieve the effect of beautifying the surrounding environment, simple wastewater reuse process and low operating cost

Inactive Publication Date: 2019-01-11
宝钢化工湛江有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, these three main physical and chemical treatment methods all have disadvantages, and new treatment processes need to be developed

Method used

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  • Process for treating coking wastewater by combining Fenton oxidation and constructed wetland plants

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Embodiment 1

[0022] The process of Fenton oxidation combined with artificial wetland plants to treat coking wastewater includes the following steps:

[0023] The coking wastewater is sent to the air flotation device after being distilled with ammonia, and the wastewater after the oil slick is removed by the air flotation device flows into the adjustment tank;

[0024] The anoxic tank is equipped with a combined packing, and the raw water sent by the adjustment tank transfer pump is mixed with the supernatant reflux of the biochemical sedimentation tank, and then enters from the lower part of the anoxic tank to ensure full contact between the waste water and the denitrifying bacteria on the packing;

[0025] The denitrifying bacteria use the carbon source in the raw water to carry out the denitrification reaction, and through the action of denitrifying bacteria (Pseudomonas, Bacillus, Achromobacter, Bacillus, etc.), the nitric acid in the water after nitrification treatment Nitrogen and nit...

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Abstract

The invention relates to a process for treating coking wastewater by combining Fenton oxidation and constructed wetland plants. The invention patent mainly studies a novel treatment process for cokingwastewater treatment and reuse, and belongs to the technical field of coking wastewater treatment. The process mainly combines a microbial degradation technology, a Fenton oxidation technology, a mixed flocculation technology and an artificial wetland plant absorption degradation technology so that the coking wastewater is processed to achieve a reuse standard, the Fenton oxidation technology andthe artificial wetland plant absorption degradation technology are used to reduce the final effluent quality of the coking wastewater, chlorine ions and residual chlorine cannot be added, the growthof the constructed wetland plants can be ensured, the constructed wetland plants play a role in the adsorption and decomposition of pollution factors in wastewater, the recycling requirement can be satisfied, and zero emission is finally achieved.

Description

technical field [0001] The invention relates to a coking wastewater treatment process, in particular to a coking wastewater treatment process combined with Fenton oxidation and artificial wetland plants, and belongs to the technical field of coking wastewater treatment. Background technique [0002] Most of the existing coking wastewater biochemical treatment processes are biochemical → physical and chemical coagulation treatment → effluent or membrane treatment; among them, biochemical treatment degrades most of the organic substances that can be biochemically treated, while some long-chain and benzene rings are difficult to biochemically treat and are toxic. It is difficult to treat the organic matter biochemically, and these organic matters need to be treated by physical and chemical means. The general physical and chemical means are mostly to add coagulant and sodium hypochlorite to degrade the organic matter. Therefore, it will have an impact on natural water bodies aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F1/001C02F1/24C02F1/52C02F1/583C02F1/66C02F1/722C02F3/302C02F3/32C02F9/00C02F2001/007C02F2101/30C02F2305/026
Inventor 肖康水
Owner 宝钢化工湛江有限公司
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