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Method for quickly starting denitrifying desulfurization process

A denitrification and desulfurization, fast-start technology, applied in chemical instruments and methods, anaerobic digestion treatment, biological water/sewage treatment, etc. problem, to achieve the effect of easy control, stable and efficient processing performance, and high processing efficiency

Inactive Publication Date: 2015-11-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of the existing denitrification desulfurization process, such as long start-up period, difficult formation of granular sludge, low biological holding capacity, and difficulty in maintaining long-term stable and high-efficiency treatment effects, and provides a rapid start-up denitrification process. The method of desulfurization process

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  • Method for quickly starting denitrifying desulfurization process
  • Method for quickly starting denitrifying desulfurization process
  • Method for quickly starting denitrifying desulfurization process

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specific Embodiment approach 1

[0018] Specific implementation mode 1: This implementation mode is a method for quickly starting the denitrification desulfurization process, which is specifically carried out according to the following steps:

[0019] 1. Form stable and mature granular sludge: Add the activated sludge in the secondary sedimentation tank of the sewage treatment plant into the expanded granular sludge bed reactor, and then pass it into wastewater I, and adjust the temperature of the expanded granular sludge bed reactor to 27 ℃ ~ 29 ℃, use sodium bicarbonate to adjust the pH of the expanded granular sludge bed reactor to 7.7 ~ 8.3, the hydraulic retention time is 24h, run continuously for 25 days, and form stable and mature particles in the expanded granular sludge bed reactor sludge;

[0020] The concentration of all components in the waste water I described in step one is: SO 4 2- 1000mg / L, NO 3 - 500mg / L, K 2 HPO 4 ·3H 2 O is 220.6mg / L, NH 4 Cl is 573.2mg / L, Ca 2+ 25mg / L, Mg 2+ The ...

specific Embodiment approach 2

[0023] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in Step 1, sodium bicarbonate is used to adjust the pH of the expanded granular sludge bed reactor to 8.0. Others are the same as the first embodiment.

specific Embodiment approach 3

[0024] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the concentration of all components in the waste water I described in step one is: SO 4 2- 1000mg / L, NO 3 - 500mg / L, K 2 HPO 4 ·3H 2 O is 220.6mg / L, NH 4 Cl is 573.2mg / L, Ca 2+ 25mg / L, Mg 2+ 10mg / L, COD 2000mg / L, trace element solution 1mL / L. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for quickly starting a denitrifying desulfurization process, relates to the method for starting the denitrifying desulfurization process, and aims to solve the technical problems that in the conventional denitrifying desulfurization process, the starting period is long, granule sludge is hard to form, the biological holding amount is low, and a long-term, stable and efficient treatment effect is hard to keep. The method comprises the following steps: I, forming stable and mature granule sludge; II, carrying out denitrifying desulfurization. The method has the following advantages: (1) the method is stable and efficient in treatment efficiency, and the removing rate of sulfide, nitrate and acetate is 95% or above; (2) the granule sludge formed by sulfate and sodium lactate as the main components of the substrate is adopted as inoculated sludge, and the denitrifying desulfurization process is started and operated, so that the biological holding amount of autotrophic denitrifying bacteria in the granule sludge is improved, the risk of autotrophic denitrifying bacterium loss is reduced, the efficiency of sulfide oxidization is guaranteed, and the endurance capacity of the system for toxicity of sulfide can be effectively improved.

Description

technical field [0001] The invention relates to a method for starting a denitrification desulfurization process. Background technique [0002] With the continuous and rapid development of my country's economy and the acceleration of urbanization, pharmaceutical and chemical industries discharge a large amount of high-concentration organic wastewater every year, among which organic wastewater containing sulfur and nitrogen is a type of heavy polluting industry that has a bad impact on biology and the environment. A typical representative of wastewater. This type of wastewater contains high concentrations of sulfur- and nitrogen-containing compounds, high toxicity, heavy pollution, and threats to biological health, especially the huge economic losses caused by sulfur-containing compounds. How to degrade and remove sulfur in organic wastewater stably and efficiently Nitrogen and carbon pollutants have become an urgent problem in the field of industrial wastewater treatment. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/34
Inventor 陈川徐熙俊任南琪李笃中王爱杰远野张若晨王艺
Owner HARBIN INST OF TECH
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