A method for promoting rapid start-up of denitrification and decarbonization system by using high-salt-tolerant strains

A fast-start, high-resistance technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., it can solve the problem for more than a month or even a year, and the possibility of success is small. , unacceptable time and cost, etc., to achieve the effect of high number of bacteria, promote stable operation, and quickly adapt to water quality

Active Publication Date: 2022-03-08
北京翰祺环境技术股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using conventional methods to inoculate and domesticate biological colonies, the possibility of success is very small, and domestication will take more than 3 months or even a year, and the time cost is also unacceptable

Method used

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  • A method for promoting rapid start-up of denitrification and decarbonization system by using high-salt-tolerant strains
  • A method for promoting rapid start-up of denitrification and decarbonization system by using high-salt-tolerant strains
  • A method for promoting rapid start-up of denitrification and decarbonization system by using high-salt-tolerant strains

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Embodiment

[0060] In order to clearly illustrate a method of using high-salt-tolerant bacteria to promote the rapid start-up of the denitrification and decarbonization system provided by the present invention, this embodiment uses figure 1 The denitrification and decarbonization system shown is taken as an example, and the high-salt wastewater from a project in Quanzhou is used as the influent for illustration.

[0061] The influent water quality and effluent water quality requirements are shown in Table 2.

[0062] Table 2

[0063]

[0064]

[0065] Such as figure 1 As shown, the denitrification and decarbonization system adopted in this embodiment includes a nitrification biofilter, a denitrification biofilter, an intermediate pool, a carbon removal biofilter and a water production pool arranged and connected along the sewage flow direction. In practice, the order of nitrification biofilter and denitrification biofilter can be changed according to the actual situation of pollut...

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Abstract

The invention discloses a method for promoting the rapid start-up of a denitrification and decarbonization system, comprising: S1. Before inoculation, an internal circulation is set between the denitrification biological filter, the nitrification biological filter, the water production tank, and the carbon removal biological filter Pipeline Ⅰ, Ⅱ; S2: When inoculating, introduce low salt water content, activated sludge and raw sludge containing functional bacteria into the nitrification biofilter, open the internal circulation pipeline Ⅰ, Ⅱ until there is a biofilm on the filter material, and then introduce For high salt water, gradually increase the salt content to that of normal influent water. After 7-10 days of operation, close the internal circulation pipelines I and II, introduce high-salt wastewater, and gradually increase to the design flow rate. If the monitored effluent water quality meets If the design requirements are met, start-up is completed. If not, repeat step S2 and inoculate again until the effluent meets the design requirements. The method can quickly start the nitrification and denitrification biochemical system, effectively improve the removal rate of ammonia nitrogen, total nitrogen and COD of the biochemical system, and effectively respond to the rapid recovery of the system after impact.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, more specifically, it relates to a method for promoting rapid start-up of a denitrification and decarbonization system by using high-salt-tolerant bacteria. Background technique [0002] With the development of industry, more and more high-salt-content refractory wastewater, such as pharmaceutical wastewater, oil mining wastewater, chemical industry and printing and dyeing wastewater, etc., has produced a large amount of salt (Cl - , Ca 2+ 、Na + Plasma), containing high concentration of organic pollutants, is a technical problem in the field of wastewater treatment. This kind of wastewater is usually treated by physicochemical and biological methods. Due to the use of physical and chemical methods, the investment and operation costs are high, and it is difficult to achieve the expected purification effect. Therefore, biological methods are still the focus of research on this kind of wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/30
CPCC02F3/34C02F3/302
Inventor 王晓阳汪德罡谢晓朋王寿鹤
Owner 北京翰祺环境技术股份有限公司
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