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Treatment method and treatment system apparatus for improving biodegradability of surface finishing liquid wastewater

A treatment method and a treatment system technology, applied in the field of improving the biochemical properties of skinning wastewater, can solve the problems of difficult biological treatment, high COD concentration, and poor biodegradability, and achieve low production and treatment costs, simple operation, and improved The effect of biodegradability

Active Publication Date: 2017-07-25
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The smooth liquid has many organic pollutants, high COD concentration, and poor biodegradability. Traditional biological treatment is difficult to work. At present, there is no mature treatment process at home and abroad. Most of them are diluted and mixed with other wastewater, which is the most difficult treatment. One of the iron and steel industry wastewater

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  • Treatment method and treatment system apparatus for improving biodegradability of surface finishing liquid wastewater

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Experimental program
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Embodiment 1

[0046] A treatment process system for improving the biochemical performance of skinning wastewater, including an inlet pump, a coarse sand filter, a first-stage lift pump, a contact reaction tower, a cordierite honeycomb ceramic loaded ferromanganese catalyst, an air source ozone generator, and an outlet water pump.

[0047] The COD of the water quality of the skinning wastewater is 9215 mg / L, the BOD is 630 mg / L, and the ratio of BOD / COD is 0.068.

[0048] The smoothing liquid waste water flows into the coarse sand filter through the water inlet pump, the filtration precision of the coarse sand filter is 55 microns, and the shell is made of carbon steel.

[0049] Then the skinning solution enters the contact reaction tower from the bottom through the primary lift pump, and the cordierite honeycomb ceramics loaded ferromanganese catalyst filler is placed in the contact reaction tower. The gas source of the ozone generator is the air source, and the ozone generated by the air ...

Embodiment 2

[0056] A treatment process system for improving the biochemical performance of skinning wastewater, including an inlet pump, a coarse sand filter, a first-stage lift pump, a contact reaction tower, a cordierite honeycomb ceramic loaded ferromanganese catalyst, an air source ozone generator, and an outlet water pump.

[0057] The COD of the water quality of the skinning wastewater is 11120 mg / L, the BOD is 680 mg / L, and the BOD / COD ratio is 0.061.

[0058] The smoothing wastewater flows into the coarse sand filter through the water inlet pump, and the main function of the coarse sand filter is to remove suspended solids and impurity particles in the wastewater. The coarse sand filter has a filtration rating of 55 microns and a carbon steel housing.

[0059] Then the skinning solution enters the contact reaction tower from the bottom through the primary lift pump, and the cordierite honeycomb ceramics loaded ferromanganese catalyst filler is placed in the contact reaction tower...

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Abstract

The invention provides a treatment method and a treatment system for improving the biodegradability of surface finishing liquid wastewater. According to the present invention, surface finishing liquid wastewater flows into a coarse sand filter to remove suspended matters and impurity particles from the wastewater, the surface finishing liquid wastewater outflowing from the coarse sand filter enters a contact reaction tower provided with an air source ozone generator from the bottom portion of the contact reaction tower, a cordierite honeycomb ceramic-supported ferromanganese catalyst filler is placed in the contact reaction tower, the ozone generated from the air source ozone generator enters the contact reaction tower from the bottom portion of the contact reaction tower, and the wastewater, the ozone and the catalyst are co-subjected to a water vapor heterogeneous catalytic reaction in the contact reaction tower so as to improve the biodegradability of surface finishing liquid wastewater, ie., the BOD / COD value in the surface finishing liquid wastewater can be increased. With the technical scheme of the present invention, the environmental pollution can be reduced, and the increasingly stringent environmental protection laws and regulations can be met.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a process and a method for improving the biochemical properties of skinning wastewater. Background technique [0002] As my country's basic industry, the iron and steel industry has developed rapidly since the reform and opening up, and has been in a high-speed development stage in recent years. However, the iron and steel industry is an industry with high energy consumption, high resources and high pollution, and its water consumption is huge, accounting for about 14% of the national industrial water consumption. [0003] Skin pass machine and skin pass liquid are important equipment on the galvanizing line. The skin pass process can improve the strip shape of the galvanizing line, eliminate the yield platform, and improve product performance. [0004] Skin pass liquid is an important medium used in the galvanizing pass pass process. The smooth liquid has m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78B01J23/889B01J35/04
CPCC02F1/725C02F1/78B01J23/8892B01J35/56
Inventor 李恩超李咸伟杨倩宇邱煜殷玫婕丁宗琪尹婷婷顾德仁
Owner BAOSHAN IRON & STEEL CO LTD
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