Heterogeneous catalysis Fenton reagent oxidation fluidized bed-anaerobic biological fluidized bed coking wastewater deep treatment system
A heterogeneous catalysis, anaerobic biological technology, applied in the direction of anaerobic digestion treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the shortage of nutrients, increase the energy consumption and operating costs of coking wastewater advanced treatment , organic matter content is not high, to achieve the effect of economical and efficient treatment
Inactive Publication Date: 2014-09-24
CHINA UNIV OF MINING & TECH (BEIJING)
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However, these treatment methods actually have some disadvantages: First, the content of organic matter in the effluent is not high. When the aerobic biological process is used, due to the rapid respiration rate of aerobic microorganisms, the nutrients are insufficient, and an additional carbon source and aeration are required. The water is often acidic, and it is necessary to add alkali to adjust the pH value of the influent, which increases the energy consumption and operating costs of the advanced treatment of coking wastewater
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[0031] It consists of heterogeneous catalytic Fenton oxidation fluidized bed, regulating bed and anaerobic biological fluidized bed area connected in sequence. The water inlet of the heterogeneous catalytic Fenton oxidation fluidized bed is used as the water inlet of the system, and the water outlet of the anaerobic fluidized bed is used as the water outlet of the system.
[0032] The wastewater is pumped into the water inlet area at the bottom of the heterogeneous catalytic Fenton oxidation fluidized bed reactor by the water inlet pump. At the same time, the H from the dosing pump 2 o 2 The solution and the reflux wastewater from the reflux pump are also pumped into the water inlet area, mixed under the action of the paddle plate reactor, and then the porous water distribution plate in the upper part of the water inlet area enters the middle of the reactor. There are flow valves behind the inlet pump, dosing pump and return pump to control the flow and velocity of raw water...
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Abstract
The invention discloses a heterogeneous catalysis Fenton reagent oxidation fluidized bed-anaerobic biological fluidized bed coking wastewater deep treatment system. The system comprises a heterogeneous catalysis Fenton reagent oxidation fluidized bed, a regulation bed and an anaerobic biological fluidized bed which are sequentially connected, wherein a water inlet area is arranged at the bottom of the oxidation fluidized bed, a coke powder iron-carrying catalyst is filled in the oxidation fluidized bed, and a solid-liquid separator is arranged at the top of the oxidation fluidized bed; the regulation bed is connected with a nutrient dosing device, and a heating sleeve is arranged in the regulation bed; and a coal powder biological filler is filled in the anaerobic biological fluidized bed, a three-phase separator is arranged at the top of the anaerobic biological fluidized bed, and a gas collection port of the three-phase separator is connected with a tail gas collecting device. The system combines the heterogeneous catalysis Fenton reagent oxidation fluidized bed and the anaerobic biological fluidized bed for deep treatment of coking wastewater, and can realize economic and high-efficient treatment of the coking wastewater so as to enable outlet water after treatment to achieve a standard of reclaimed water.
Description
technical field [0001] The invention relates to a coking wastewater advanced treatment technology, in particular to a heterogeneous catalytic Fenton reagent oxidation fluidized bed-anaerobic biological fluidized bed advanced treatment coking wastewater system. Background technique [0002] With the growth of the social economy and the development of the steel industry, the demand for coke has increased, which has led to the continuous development of the coking industry and produced a large amount of coking wastewater. Coking wastewater is not only a pollutant with typical industry characteristics, but also a precious water resource. The massive discharge of coking wastewater not only wastes water resources, but also causes serious environmental pollution and directly threatens human health. [0003] Coking wastewater is mainly produced in the high-temperature carbonization process of coal, the gas purification process, and the refining process of chemical products. The comp...
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IPC IPC(8): C02F9/14C02F3/28C02F1/72
Inventor 王建兵秦强张春晖王春荣何绪文李武俊黄青程俊阳石婷
Owner CHINA UNIV OF MINING & TECH (BEIJING)