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Device for adsorbing, degrading and denitrifying simultaneously to improve removal rate of total nitrogen in gasified wastewater and method for treating waste water

A technology of total nitrogen removal rate and coal gasification wastewater, applied in adsorption water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. problems, to achieve the effect of saving infrastructure costs, low oxygen consumption, and low power consumption

Inactive Publication Date: 2013-11-27
HARBIN INST OF TECH
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Problems solved by technology

[0004] The present invention aims to solve the problem that the existing coal gasification wastewater treatment technology cannot remove total nitrogen efficiently and at low cost at the same time, and provides an adsorption and degradation synchronous denitrification device and a wastewater treatment method that can improve the total nitrogen removal rate of coal gasification wastewater

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  • Device for adsorbing, degrading and denitrifying simultaneously to improve removal rate of total nitrogen in gasified wastewater and method for treating waste water
  • Device for adsorbing, degrading and denitrifying simultaneously to improve removal rate of total nitrogen in gasified wastewater and method for treating waste water
  • Device for adsorbing, degrading and denitrifying simultaneously to improve removal rate of total nitrogen in gasified wastewater and method for treating waste water

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specific Embodiment approach 1

[0022] Specific implementation mode one: combine Figure 1 ~ Figure 3 In this embodiment, an adsorption and degradation synchronous denitrification device for improving the total nitrogen removal rate of coal gasification wastewater includes an adsorption zone 3, a degradation and adsorption zone 11, a primary three-phase separation zone 20, a short-range nitrification and denitrification zone 14, and a secondary three-phase denitrification zone. Separation zone 28 and pump 12; a first partition 1 is set between the adsorption zone 3 and the degradation adsorption zone 11, and a second partition 2 is set between the degradation adsorption zone 11 and the short-range nitrification and denitrification zone 14;

[0023] The adsorption area is composed of the first partition 1, the left wall of the pool 13-1, the front wall of the pool 13-2, the rear wall of the pool 13-3, the water inlet 3-1 of the adsorption area, the water inlet pipe 4 at the bottom, and the water distribution t...

specific Embodiment approach 2

[0031] Specific implementation mode two: combination Figure 1~Figure 3 , this embodiment utilizes the wastewater treatment method of the adsorption degradation synchronous denitrification device for improving the total nitrogen removal rate of coal gasification wastewater according to the specific embodiment 1, and proceeds according to the following steps:

[0032] 1. Adsorption treatment: COD≤1600mg / L, BOD 5 Wastewater with ≤400mg / L, volatile phenol≤600mg / L, total nitrogen≤150mg / L and pH value of 7.2~7.5 enters from the bottom water inlet pipe 4 of the adsorption area 3 at 0.5m / h~0.8m / h, and through the adsorption The water distribution tank device 5 at the bottom of area 3 enters the adsorption area 3, and granular activated carbon is used for adsorption treatment in the adsorption area 3. The adsorption treatment time is 6h~12h. The wastewater treated in the adsorption area 3 passes through the particle blocking device 9 and then enters the The first outlet weir 10, part...

specific Embodiment approach 3

[0039] Embodiment 3: This embodiment is different from Embodiment 2 in that: the adsorption treatment time described in step 1 is 8h~11h. Others are the same as in the second embodiment.

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Abstract

The invention relates to a device for improving the total nitrogen removal rate and a method for treating wastewater by adopting the device, particularly relates to a device for adsorbing, degrading and denitrifying simultaneously to improve the removal rate of total nitrogen in gasified wastewater and a method for treating wastewater by adopting the device, belongs to the field of wastewater treatment and aims to solve the problems that the existing technology for treating the gasified wastewater cannot achieve the effect of removing the total nitrogen efficiently at the same time and has high cost. The device comprises an adsorption zone, a degradation and adsorption zone, a primary three-phase separation zone, a partial nitrification and denitrification zone, a secondary three-phase separation zone and a pump; the adsorption zone is filled with granular activated carbon; the degradation and adsorption zone is filled with powdery activated carbon and activated sludge and internally provided with an aeration device and a stirrer; and the partial nitrification and denitrification zone is internally provided with an aeration device and a stirrer. The method comprises the following steps of: (1) adsorbing, (2) degrading and adsorbing, and (3) partially nitrifying and denitrifying to obtain the treated water. The method is used for treating the gasified wastewater.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a device for improving the removal rate of total nitrogen and a wastewater treatment method thereof. Background technique [0002] The treatment of coal gasification wastewater at home and abroad has always been a difficult research point, mainly because coal gasification wastewater contains high concentrations of unit phenols, polyphenols, heterocyclic aromatic hydrocarbons, long-chain alkanes and ammonia nitrogen. At present, physical and chemical processes, biochemical processes or a combination of the two are mainly used to treat coal gasification wastewater at home and abroad. These methods include membrane biological treatment process, fluidized bed treatment process, anaerobic biological treatment process, advanced oxidation technology, Fenton oxidation, coagulation and adsorption treatment process, among which the most economical and practical process is anoxic and aer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/28
Inventor 韩洪军赵茜庄海峰方芳徐春艳刘音颂
Owner HARBIN INST OF TECH
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