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Reinforcing agent and method for treating high-salt and low-temperature wastewater

A wastewater treatment and enhancer technology, applied in chemical instruments and methods, special compound water treatment, biological water/sewage treatment, etc., can solve the problem that the treatment effect is not as good as the treatment effect, affects the activity of anammox bacteria, affects the cell activity, etc. problem, to achieve the effect of saving energy and materials, facilitating popularization and application, and simple process

Active Publication Date: 2017-07-21
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the optimum operating temperature of the anammox process is 30-35°C, low temperature will seriously affect the activity of anammox bacteria, although denitrifying bacteria are not as sensitive to temperature as anammox bacteria, but under low temperature conditions The treatment effect is far worse than that under normal temperature conditions
In addition, both are sensitive to salinity, and high salinity will significantly affect their cell activity and thus affect the treatment effect

Method used

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Effect test

Embodiment 1

[0017] The process of this embodiment is implemented in a continuous anaerobic membrane bioreactor, the membrane used is a hollow fiber ultrafiltration membrane, which is arranged inside the reactor, and the microorganisms are all trapped in the reactor to avoid the loss of microorganisms .

[0018] The present embodiment deals with the high-salt and low-temperature waste water produced by a certain seafood processing enterprise, and its water quality index is as shown in Table 1,

[0019] Table 1 Quality indicators of seafood processing wastewater

[0020] project scope average COD / (mg / L) 767-1055 927 Ammonia nitrogen / (mg / L) 56-97 82 Salinity / (mg / L) 25271-34105 29565 temperature / (℃) 5-15 10 pH 6.0-7.5 6.8

[0021] The specific process of the above wastewater treatment is as follows:

[0022] (1) A fortifier consisting of mannitol, tetrahydropyrimidine, trehalose, amino acid, potassium salt, inositol methyl ester, fructan, ...

Embodiment 2

[0025] The technological process of this embodiment is implemented in a sequencing batch reactor. After the reaction is completed, the sludge is completely settled and then drained, and the microorganisms are all trapped in the reactor to avoid the loss of microorganisms.

[0026] In this embodiment, the high-salt and low-temperature waste water produced by a certain mustard pickling enterprise is treated, and its water quality index is shown in Table 2.

[0027] Table 2 Water quality index of mustard pickling wastewater

[0028] project scope average COD / (mg / L) 3465-4917 4091 Ammonia nitrogen / (mg / L) 47-62 55 Salinity / (mg / L) 37105-52851 47097 temperature / (℃) 8-18 14 pH 4.5-6.2 5.5

[0029] The specific process of the above wastewater treatment is as follows:

[0030] (1) A fortifier consisting of mannitol, tetrahydropyrimidine, trehalose, amino acid, potassium salt, inositol methyl ester, fructan, dimethyl sulfoxide, methano...

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Abstract

The invention belongs to the technical field of sewage treatment, and relates to a reinforcing agent and a method for treating high-salt and low-temperature wastewater. The reinforcing agent for treating high-salt and low-temperature wastewater is prepared by uniformly mixing mannitol, ectoine, trehalose, amino acid, sylvite, methyl ester inositol, fructosan, dimethyl sulfoxide, methyl alcohol and acetamide. During treatment of the wastewater, the method comprises the following steps: adding the reinforcing agent into the high-salt and low-temperature wastewater, feeding anaerobic ammonium oxidation bacteria and denitrifying bacteria into a sequencing batch reactor or a continuous anaerobic membrane bioreactor, and then introducing the high-salt and low-temperature wastewater into the sequencing batch reactor or the continuous anaerobic membrane bioreactor for treatment. The whole technological process is simple and flexible to operate and control; synchronous removal of carbon and nitrogen from the wastewater can be realized; energy and materials are saved, the production cost is low, and the economical benefit is high; and the reinforcing agent and the method are convenient to popularize and apply.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of sewage treatment, and relates to a strengthening agent and a method for high-salt and low-temperature wastewater, in particular to a strengthening agent and a method for strengthening anaerobic ammonia oxidation and denitrification for treating high-salt and low-temperature wastewater. [0003] Background technique: [0004] High-salt wastewater mainly comes from food processing, pharmaceuticals, oil and gas processing, tanning, pickling of mustard, and sewage directly discharged from seawater utilization in coastal areas. The improvement of people's living quality has also caused the discharge of high-salt wastewater to increase year by year. If these wastewater is directly discharged, it will lead to an increase in the salinity of the water quality of the river, which will bring more and more serious pollution to soil, surface water and groundwater. endanger the ecological environment. Due to hi...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F3/34
CPCC02F3/28C02F3/282C02F3/34C02F2305/06Y02E50/30
Inventor 李津于德爽张培玉杨瑞霞楼迎华石磊
Owner QINGDAO UNIV
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