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Advanced treatment process for coking wastewater by using resin in multistage fluidized-bed

A technology for coking wastewater and resin flow, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of intermittent operation of adsorption and regeneration, complex operation and management, and utilization of resin exchange capacity Low efficiency and other problems, to achieve the effect of high utilization rate of resin and equipment, high degree of integration, and stable treatment effect

Inactive Publication Date: 2012-12-26
四川环美能科技有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current fixed bed or suspended bed resin adsorption reactors have some insurmountable shortcomings, such as the low utilization rate of resin exchange capacity; the adsorption efficiency gradually decreases due to the gradual saturation of the resin during operation; the intermittent operation of adsorption and regeneration cannot be realized. For the continuous operation of the equipment, if continuous processing is required, one or more sets of equipment must be added, and the utilization rate of the equipment is low
Due to the complex operation and management of fluidized bed, it is rarely used in wastewater treatment

Method used

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  • Advanced treatment process for coking wastewater by using resin in multistage fluidized-bed
  • Advanced treatment process for coking wastewater by using resin in multistage fluidized-bed

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Embodiment

[0022] Using the treatment process of the present invention, the coking wastewater of a certain enterprise was subjected to advanced treatment, and the same water sample was used to carry out 4 tests in total.

[0023] Coking wastewater enters from the water inlet at the bottom of the first-stage reactor, fully contacts and stirs with the resin, and the effluent enters the second-stage reactor from the bottom of the second-stage reactor through overflow, and reacts with the resin in the second-stage reactor, coking wastewater After the 6-stage reaction, water is discharged from the 6-stage reactor;

[0024] The resin enters from the bottom of the 6-stage reactor, moves with the water to the upper part of the reactor, and fully contacts and stirs with the coking wastewater. It reacts with coking wastewater, and after the 6-stage reaction, the resin is discharged from the 1st-stage reactor, pumped into the transfer tank, and the resin is regularly discharged into the regeneratio...

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Abstract

The invention relates to the field of wastewater processing, and especially relates to an advanced treatment process for coking wastewater by using resin in a multistage fluidized-bed. In the process, the equipment is composed of N reactors in series, a regeneration apparatus and a relay tank which are connected in sequence, wherein N is an integer that is no less than two; and the flow direction of the resin is reverse to that of the coking wastewater. The process has high utilization rate of the resin and the equipment, can realize continuous treatment of resin adsorption and regeneration, and is stable treatment effect.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a multi-stage resin fluidized bed advanced treatment process for coking wastewater. Background technique [0002] The concentration of pollutants in coking wastewater is high and difficult to degrade, and because of the high content of nitrogen in coking wastewater, the nitrogen source required for biological purification is excessive, which brings great difficulties to the treatment. Therefore, coking wastewater is a kind of industrial wastewater containing a large amount of toxic and harmful substances, and the treatment process is complex, costly and difficult. At the same time, the discharge of coking wastewater is large. Because polycyclic aromatic hydrocarbons in coking wastewater are not only difficult to degrade, but also are usually strong carcinogens, if they are not treated up to the standard, they will not only pollute the environment but also directly threaten hum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 倪明亮肖波
Owner 四川环美能科技有限公司
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