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Recycling and Utilization Process of High Concentration Refractory Salt Organic Wastewater

A technology of organic waste water and treatment process, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, general water supply conservation, etc., can solve the problem of long-term stable operation of the process, organic pollution of the membrane system, and large concentrated water output To achieve the effect of reducing the risk of organic pollution, realizing internal circulation and recycling of resources, and reducing the risk of inorganic salt scaling

Active Publication Date: 2019-02-22
BEIJING JINDAYU ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the operation of the conventional advanced treatment process, the problems of organic pollution and inorganic salt scaling of the membrane system are easy to occur, making it difficult for the process to operate stably for a long time
In addition, the recovery rate of conventional advanced treatment process wastewater is low and the output of concentrated water is large. If a large amount of pollutants are concentrated in concentrated water and discharged directly, it will cause serious environmental pollution.

Method used

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  • Recycling and Utilization Process of High Concentration Refractory Salt Organic Wastewater
  • Recycling and Utilization Process of High Concentration Refractory Salt Organic Wastewater
  • Recycling and Utilization Process of High Concentration Refractory Salt Organic Wastewater

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Comparison scheme
Effect test

Embodiment 1

[0078] Adopt the method of the present invention to attach figure 1 The integrated process in the process treats the saline wastewater of an oil refinery, and the water quality indicators are as follows:

[0079] serial number

[0080] The system includes the following steps:

[0081] a. Pretreatment process

[0082] Wastewater first enters the crystallization defluorination reactor for pretreatment. After pretreatment, part of the suspended solids, organic matter and fluoride ions in the wastewater are removed.

[0083] Pretreatment effluent: turbidity ≤ 130NTU, COD ≤ 1700mg / L, effluent flows into the comprehensive wastewater regulating tank for water quality and quantity regulation.

[0084] b. Biochemical treatment process

[0085] The biochemical treatment process unit adopts anaerobic-anoxic-aerobic (A 2 O) process, COD, nitrogen, and phosphorus are removed from wastewater.

[0086] After the biochemical treatment unit, the COD of the wastewater is ≤170mg / ...

Embodiment 2

[0101] Adopt the method of the present invention to attach figure 2 The integrated process in the process treats wastewater from a coking plant, and the water quality indicators are as follows:

[0102]

[0103]

[0104] The system includes the following steps:

[0105] a. Pretreatment process

[0106] The wastewater first enters the grease trap, the air flotation tank, and the crystallization defluorination reactor for pretreatment. After pretreatment, part of the oil, suspended solids, fluoride ions and organic matter in the wastewater are removed.

[0107] Pretreatment effluent: turbidity ≤ 30NTU, COD ≤ 2400mg / L, effluent flows into the comprehensive wastewater regulating tank for water quality and quantity regulation.

[0108] b. Biochemical treatment process

[0109] The biochemical treatment process unit adopts anaerobic-anoxic-aerobic (A 2 O) process, COD, nitrogen, and phosphorus are removed from wastewater.

[0110] After the biochemical treatment unit, t...

Embodiment 3

[0126] Adopt the method of the present invention to attach figure 2 The integrated process flow in the paper treats a certain coal gas waste water. The water quality indicators are as follows:

[0127]

[0128]

[0129] The system includes the following steps:

[0130] a. Pretreatment process

[0131] The wastewater first enters the grease trap, the air flotation tank, and the crystallization defluorination reactor for pretreatment. After pretreatment, part of the oil, suspended solids, fluoride ions and organic matter in the wastewater are removed.

[0132] Pretreatment effluent: turbidity ≤ 25NTU, COD ≤ 3000mg / L, effluent flows into the comprehensive wastewater regulating tank for water quality and quantity regulation.

[0133] b. Biochemical treatment process

[0134] The biochemical treatment process unit adopts anaerobic-anoxic-aerobic (A 2 O) process, COD, nitrogen, and phosphorus are removed from wastewater.

[0135] Biochemical treatment effluent: COD≤200...

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Abstract

Provided is a resource recycling and treatment technology of high-concentration degradation-resistant salt-containing organic waste water.The technology comprises the following steps of the pretreatment process, the biochemical treatment process, the advanced pretreatment process, the advanced treatment process and the concentrated water treatment process.According to the technology, multiple process combinations are optimized, degradation-resistant organic matter and inorganic salts in the waste water can be removed step by step, and resource recycling of the high-concentration degradation-resistant salt-containing organic waste water is achieved on the basis of nearly zero emission; the recycling rate of produced water produced after the treatment process can reach 95% or above, and the produced water can be used as water for a production technology and replenishing water for circulating cooling water.According to the resource recycling and treatment technology of the high-concentration degradation-resistant salt-containing organic waste water, the water quality requirement of biochemical reaction inlet water is guaranteed; due to the fact that fluorine ions are removed through a fluorine removing reactor, and calcium and magnesium ions are removed through a resin softening device, the risk of inorganic salt scaling of a subsequent desalination system is greatly reduced; the risk of organic matter contamination of the subsequent desalination system is effectively reduced by means of biochemical treatment and an advanced oxidation reaction.

Description

technical field [0001] The invention relates to a resource recycling treatment system and a treatment process for high-concentration refractory salt-containing organic wastewater, belonging to the field of wastewater treatment. More specifically, it involves an integrated treatment process of physical treatment, chemical treatment, biological treatment, and membrane advanced treatment for this kind of high-concentration and refractory saline organic wastewater, aiming to use this system on the basis of "nearly zero discharge" Realize the resource recovery and utilization of high-concentration and refractory saline organic wastewater. Background technique [0002] Domestic sewage and industrial wastewater are the main sources of pollution in my country's water bodies. At present, the domestic sewage treatment technology has become mature, but the treatment of industrial wastewater has not been completely solved, especially the high concentration discharged in the production ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCY02A20/131
Inventor 尹胜奎曹普晅耿天甲张万松曹真曹海燕张会
Owner BEIJING JINDAYU ENVIRONMENT TECH CO LTD
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