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A sewage treatment device with a parallel structure

A sewage treatment device, parallel technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem that the waste water cannot be fully reached, and achieve simple and efficient sewage treatment equipment, The effect of reducing the amount of sludge and saving the amount of use

Active Publication Date: 2018-03-27
BEIJING WANBANGDA ENVIRONMENTAL PROTECTION TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the wastewater treated by the above method still cannot fully meet the requirements of the national water quality standard, and a more effective coking wastewater treatment process needs to be developed

Method used

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  • A sewage treatment device with a parallel structure
  • A sewage treatment device with a parallel structure
  • A sewage treatment device with a parallel structure

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Effect test

Embodiment 1

[0068] Such as figure 1 As shown, the device of the present invention includes a first anoxic tank and a second anoxic tank, a first aerobic tank, a third anoxic tank, a second aerobic tank, a flocculation tank and a clarification tank connected in parallel. The first anoxic pool and the third anoxic pool are dosed with activated carbon filler, and the dosing amount is 1.5g / L and 0.5g / L respectively. Stirring devices are arranged in the first anoxic pool, the second anoxic pool and the third anoxic pool. An aeration device is arranged in the first aerobic tank and the second aerobic tank. There is no internal circulation between each aerobic pool and anoxic pool. The sewage is divided into three streams and enters the first anoxic pool, the second anoxic pool and the third anoxic pool respectively, and the distribution coefficient is n(1):n(2):n(3)=7:2:0.2:0.8. The volume ratio of the first aerobic pool to the first anoxic pool is 2:1, the volume ratio of the first aerobic ...

Embodiment 2

[0070] Such as figure 2 As shown, the device of the present invention includes a first anoxic tank, a first aerobic tank and a second aerobic tank connected in parallel, a second anoxic tank, a third aerobic tank, a flocculation tank and a clarification tank. The first anoxic tank and the second anoxic tank were dosed with activated carbon filler, and the dosages were 0.7g / L and 0.3g / L respectively. Stirring devices are arranged in the first anoxic tank and the second anoxic tank. An aeration device is arranged in the first aerobic tank, the second aerobic tank and the third aerobic tank. There is no internal circulation between each aerobic pool and anoxic pool. The sewage is divided into two streams and enters the first anoxic pool and the second anoxic pool respectively, and the distribution coefficient is n1:n2=8:2. The volume ratio of the first aerobic pool to the first anoxic pool is 1:1, the volume ratio of the second aerobic pool to the first anoxic pool is 1:1, an...

Embodiment 3-4

[0072] In front of the above-mentioned embodiment 1-2, a pretreatment device is added, that is, a series electrocatalytic oxidation and photocatalytic oxidation device, and the anode in the electrolytic system of the electrocatalytic oxidation is Ti / PbO 2 The anode and cathode are Ti cathodes, and the current density is 20mA cm -2 ; The photocatalytic oxidation is based on TiO 2 as catalyst, H 2 o 2 As an oxidizing agent, it is carried out under ultraviolet light irradiation, where TiO 2 The dosage can be reduced to 10% of the existing known dosage.

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Abstract

The invention relates to a sewage treatment device with a parallel structure for coking wastewater, which includes an anoxic pool, an aerobic pool, a flocculation tank and a clarification tank repeatedly connected in series in multiple stages; anaerobic pool, or there is a primary aerobic pool consisting of two parallel aerobic pools; wherein, activated carbon filler is added to the first anoxic pool, and in the sewage treatment plant, the total dosage of the activated carbon filler The amount is 0.5‑3g / L. Utilizing the structure designed by the invention, the dosage of activated carbon is only up to 50% of the original dosage to realize high-efficiency purification of sewage, effectively saving the amount of activated carbon used. In addition, there is no need to add additional organic carbon sources, no internal circulation, and the efficient removal of nitrogen and other pollutants in coking wastewater can be easily realized.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sewage treatment device with a parallel structure and a sewage treatment method thereof. Background technique [0002] Coking wastewater is produced in the process of coal dry distillation, gas cooling, steelmaking, gas purification, and chemical product production, containing inorganic pollutants such as high concentrations of ammonia nitrogen, cyanide, and thiocyanate, and a large number of refractory heterocyclic and polycyclic compounds. Industrial wastewater of aromatic compounds. [0003] Coking wastewater is treated by the ordinary activated sludge method, which has a certain removal effect on phenol, cyanide and other substances in the wastewater, and has a certain effect on COD Cr And the removal efficiency of ammonia nitrogen is extremely poor. [0004] The powder activated carbon treatment process not only maintains the advantages of the traditional activated sludge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 单明军周昆仑寇丽红庄博弘
Owner BEIJING WANBANGDA ENVIRONMENTAL PROTECTION TECH
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