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Iron and steel complex comprehensive wastewater treatment device and process

A technology for comprehensive wastewater and combined enterprises, which is applied in the field of treatment devices and comprehensive wastewater treatment devices for iron and steel complexes, can solve the problems of increased equipment and operating costs, complex components, and failure to meet the economic requirements of wastewater treatment, and achieves energy consumption and operation. Low cost, simplified treatment process, high volume load effect

Active Publication Date: 2016-02-03
深圳市锦坚环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, considering the wide variety of pollutants and complex components contained in comprehensive wastewater, it is difficult to effectively make the effluent fully meet the various indicators of the reuse standard by using a single advanced treatment process. If the treatment effect is to be improved, it will inevitably be greatly improved Increase equipment and operating costs, do not meet the economic requirements of wastewater treatment
In short, there is still a lack of a low-cost technology that can treat the wastewater discharged from the iron and steel industry up to the standard as reused water

Method used

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  • Iron and steel complex comprehensive wastewater treatment device and process

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Effect test

Embodiment 1

[0073] A comprehensive wastewater treatment device for an iron and steel complex, the device includes a coagulation unit, a denitrification biofilter, a nitrification biofilter, a filter unit and an ozone catalytic oxidation unit connected in sequence; the coagulation unit is a mixing-flocculation- Sedimentation tank, the filter material in the denitrification biofilter is volcanic rock, the filter material in the nitrification biofilter is modified ceramsite and coke, the filter unit is an atmospheric filter, and the atmospheric filter The filter medium in the pool is quartz sand, the ozone catalytic oxidation unit is an ozone reactor and an ozone generator supplying ozone to the ozone reactor, and a catalyst is placed in the ozone reactor.

[0074] The process of using the above-mentioned device to treat wastewater such as figure 1 As shown in (A), the process includes the following steps: the wastewater to be treated first enters the coagulation unit, and coagulation agents...

Embodiment 2

[0080] A comprehensive wastewater treatment device for an iron and steel complex, the device includes a coagulation unit, an ozone catalytic oxidation unit, a denitrification biofilter, a nitrification biofilter and a filter unit connected in sequence; the coagulation unit is a high-density sedimentation tank , the filter material in the denitrification biofilter is volcanic rock and coke, the filter material in the nitrification biofilter is volcanic rock, modified ceramsite and coke, the filter unit is a multimedia filter, and the poly The filter medium in the medium filter is a combination of pebbles, quartz sand and anthracite, and the ozone catalytic oxidation unit is an ozone reactor and an ozone generator that supplies ozone to the ozone reactor, and a catalyst is placed in the ozone reactor.

[0081] Utilize the second process to treat wastewater, such as figure 1 As shown in (B), the process includes the following steps: the waste water to be treated first enters the ...

Embodiment 3

[0087] A comprehensive wastewater treatment device for an iron and steel complex, the device includes a coagulation unit, a nitrification biological filter, a denitrification biological filter, a filter unit and an ozone catalytic oxidation unit connected in sequence; the coagulation unit is a mechanically stirred clarifier , the filter material in the denitrification biofilter is modified ceramsite, the filter material in the nitrification biofilter is coke, the filter unit is an atmospheric filter, and the filter in the atmospheric filter The medium is a combination of pebbles, quartz sand and anthracite, and the ozone catalytic oxidation unit is an ozone reactor and an ozone generator that supplies ozone to the ozone reactor, and a catalyst is placed in the ozone reactor.

[0088] The process of using the above-mentioned device to treat wastewater such as figure 1 As shown in (C), the process includes the following steps: the waste water to be treated first enters the coagu...

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Abstract

The invention provides an iron and steel complex comprehensive wastewater treatment device and process. The device comprises a coagulation unit, a biochemical treatment unit, a filter unit and an ozone catalytic oxidation unit. The biochemical treatment unit comprises a nitrification biofilter and a denitrification biofilter. The coagulation unit, the denitrification biofilter, the nitrification biofilter, the filter unit and the ozone catalytic oxidation unit are connected in order; or, the coagulation unit, the ozone catalytic oxidation unit, the denitrification biofilter, the nitrification biofilter and the filter unit are connected in order; or, the coagulation unit, the nitrification biofilter, the denitrification biofilter, the filter unit and the ozone catalytic oxidation unit are connected in order. The device can remove COD and ammonia nitrogen from wastewater synchronously at low cost, has the advantages of high treatment efficiency, good stability, strong impact resistance ability and simple operation, can flexibly selects the connection form of the treatment units according to the water quality condition, can realize the whole course flow by gravity, lowers energy consumption, and is conducive to project promotion.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and relates to a comprehensive wastewater treatment device and process of an iron and steel complex, in particular to a process for treating the comprehensive wastewater of an iron and steel complex by using a coagulation-biological filter-ozone catalytic oxidation-filtration process, so that it can reach the Use standard processing equipment and techniques. Background technique [0002] my country is a big steel producing country in the world. The production of steel plants includes production processes such as material selection, sintering, ironmaking, steelmaking, steel rolling and coking. The iron and steel industry consumes a lot of water. Wastewater mainly comes from production process water, equipment and product cooling water, flue gas washing, site flushing, and domestic sewage. The wastewater discharge volume is large, the composition is complex, and the pollutant concentra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/16
Inventor 王丽英谢勇冰李海波王项晗巴雨马晨
Owner 深圳市锦坚环保科技有限公司
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