Annular radial-flow negative-pressure suction internal loop photoelectric catalytic reactor

A technology of negative pressure suction and photoelectric catalysis, which is applied in chemical instruments and methods, reflux water treatment, light water/sewage treatment, etc., can solve the problems of low treatment efficiency and high energy consumption, and reduce energy consumption per ton of water treatment , reduce the tank voltage, improve the effect of water inlet efficiency

Active Publication Date: 2015-03-25
CHINA NAT OFFSHORE OIL CORP +2
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to design an annular radial flow negative pressure suction type internal circulation photocatalytic oxidation reactor to solve the problems of low processing efficiency and high energy consumption of the traditional aeration type internal circulation photoelectric catalytic oxidation reactor

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  • Annular radial-flow negative-pressure suction internal loop photoelectric catalytic reactor
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specific example 1

[0040] A petrochemical company in Zhejiang Province contained a large amount of refractory substances in the production wastewater due to the complex oil products it refined. The COD of the wastewater was 300-500mg / L after biochemical treatment, which could not meet the relevant effluent discharge standards. The engineering application research on the advanced treatment of the company's biochemical effluent was carried out by using the annular radial flow negative pressure suction type internal circulation photoelectric catalytic reactor of the present invention. The results show that when the hydraulic retention time is 1h, the power consumption per ton of water is 15kw.h / t When the effluent COD≤60mg / L, the effluent meets the standard discharge water quality requirements. Compared with the traditional aeration-type internal circulation photoelectric equipment, the power consumption per ton of water is reduced by about 1-2kw.h under the condition that the treatment effect remain...

specific example 2

[0042] After biochemical treatment of refining and chemical wastewater from a petrochemical company in Tianjin, in order to achieve near-zero discharge of wastewater, an ultrafiltration-reverse osmosis dual-membrane system was used to reuse part of the biochemical effluent. After being treated by the dual-membrane system, a certain amount of concentrated liquid will be produced. COD is about 300-400mg / L, conductivity is about 9000-12000μs / cm, Cl - The content is about 2000-3000mg / L. Because of its high salt content, small discharge, and difficult biochemical degradation of the contained substances, the concentrated solution is not suitable for biochemical treatment again. After being treated by the annular radial flow negative pressure suction type internal circulation photocatalytic reactor of the present invention, when the hydraulic retention time in the reactor is 1h and the water power consumption per ton is 14kw.h / t, the effluent COD≤50mg / L meets In order to meet the sta...

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Abstract

The invention provides an annular radial-flow negative-pressure suction internal loop photoelectric catalytic reactor, comprising a photoelectric catalysis oxidation reaction system and an annular radial-flow negative-pressure suction internal loop water inlet system, wherein the photoelectric catalysis oxidation reaction system comprises a plate-type tubular DSA anode and a mesh-type tubular titanium cathode; a granular photoelectric catalyst is filled between the anode and the cathode; an ultraviolet generator is arranged in the mesh-type tubular titanium cathode; the annular radial-flow negative-pressure suction internal loop water inlet system is arranged at the lower part of the photoelectric catalysis oxidation reaction system; a liquid injection pipe is arranged at the center of the water inlet system; a plurality of pipelines with adjustable lengths are arranged at a bottleneck of the liquid injection pipe; the liquid injection pipe is communicated with an annular radial-flow water feeder which is densely distributed with constant-diameter round holes in a bottom region of the reactor; a gas injection pipe is arranged at the top of the reactor; an air inlet of the gas injection pipe is connected with a compressed air pump; an air outlet is connected with the atmosphere; the bottleneck is connected with an exhaust pipe at the top of the reactor; and hydrogen generated in the reactor is diluted and discharged.

Description

technical field [0001] The invention belongs to the professional field of industrial wastewater treatment, and in particular relates to an internal circulation photoelectric catalytic reaction device for treating high-salt refractory organic wastewater. Background technique [0002] In recent years, with the development of the country's industry and economy, many wastewater containing toxic and harmful substances that are difficult to biodegrade have continuously entered the environment, causing great harm to industrial and agricultural production, people's lives and human health. Under this background , the state requires more and more stringent standards for wastewater discharge, and the up-to-standard treatment of many refractory wastewater has become a difficult problem in the field of environmental protection. [0003] On the other hand, as a brand-new advanced oxidation technology, photoelectric catalytic oxidation technology has been successfully applied in the high-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/467
CPCC02F1/32C02F1/46104C02F1/46114C02F2001/46133C02F2101/30C02F2301/04
Inventor 谢陈鑫秦微滕厚开赵慧李肖琳钱光磊张艳芳郑书忠王震李旗
Owner CHINA NAT OFFSHORE OIL CORP
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