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Excrement sewage treatment method

A fecal sewage and treatment method technology, applied in the direction of oxidized water/sewage treatment, sterilization/microkinetic water/sewage treatment, etc., can solve the problems of long aerobic fermentation treatment time and harsh temperature requirements, and achieve shortened degradation time, Effect to avoid the use of microorganisms

Pending Publication Date: 2019-05-10
国环电气科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because anaerobic fermentation has strict temperature requirements and aerobic fermentation takes a long time, there are deficiencies in the existing biological treatment methods for fecal sewage that need to be improved.

Method used

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  • Excrement sewage treatment method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] NaOH aqueous solution is used as the electrolyte, and the concentration of the electrolyte is 14mol / L.

[0038] The sinusoidal alternating current with a frequency of 50Hz is used as the power supply, and the iron anode and graphite cathode are used for electrolysis, and the current density is 88mA / cm 2 , The electrolysis temperature is 30°C-60°C. Electrolysis can be done in air environment. The electrolysis time may be 60 minutes.

[0039] The electrolyzed solution contains an oxidant, and the electrolyzed solution is sent into the septic tank, or the sewage containing feces in the septic tank is lifted to the reaction chamber, and the electrolyzed solution is sent into the reaction chamber.

[0040] During the reaction, the concentration of the oxidizing agent in the sewage containing feces is preferably 6mol / L, and the reaction duration is 7min. In this embodiment, the bactericidal effect on Escherichia coli (bacillus) is about 99.9%. .

Embodiment 2

[0042] NaOH aqueous solution is used as the electrolyte, and the concentration of the electrolyte is 14mol / L.

[0043] The sinusoidal alternating current with a frequency of 50Hz is used as the power supply, and the iron anode and graphite cathode are used for electrolysis, and the current density is 88mA / cm 2 , The electrolysis temperature is 30°C-60°C. Electrolysis can be done in air environment. The electrolysis time may be 60 minutes.

[0044] The electrolyzed solution contains an oxidant, and the electrolyzed solution is sent into the septic tank, or the sewage containing feces in the septic tank is lifted to the reaction chamber, and the electrolyzed solution is sent into the reaction chamber.

[0045] During the reaction, the concentration of the oxidizing agent in the feces-containing sewage is preferably 7 mol / L, and the reaction lasts for 7 minutes. In this embodiment, 99% of coliform bacteria and 97% of viable bacteria are removed; the bactericidal effect on Esch...

Embodiment 3

[0047] NaOH aqueous solution is used as the electrolyte, and the concentration of the electrolyte is 14mol / L.

[0048] The sinusoidal alternating current with a frequency of 50Hz is used as the power supply, and the iron anode and graphite cathode are used for electrolysis, and the current density is 88mA / cm 2 , The electrolysis temperature is 30°C-60°C. Electrolysis can be done in air environment. The electrolysis time may be 60 minutes.

[0049] The electrolyzed solution contains an oxidant, and the electrolyzed solution is sent into the septic tank, or the sewage containing feces in the septic tank is lifted to the reaction chamber, and the electrolyzed solution is sent into the reaction chamber.

[0050] During the reaction process, the concentration of the oxidant in the feces-containing sewage is preferably 7 mol / L, the reaction lasts 7 minutes, and the reaction temperature is 15-30° C. In the present embodiment, 99% of coliform bacteria and 97% of viable bacteria are...

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Abstract

The invention discloses an excrement sewage treatment method. The method comprises the following steps: electrolyzing electrolytic solution by an iron positive electrode and an inertia negative electrode, and generating an oxidizing agent; sending the oxidizing agent generated by electrolysis into sewage containing excrement and reacting; and discharging a reaction product. The method belongs to aphysicochemical method as a whole, microorganisms are avoided from being used, a working process is not limited by an environment temperature, degradation time of a pollutant is greatly shortened, and immediate treatment is realized basically.

Description

technical field [0001] The invention relates to the technical field of sewage treatment and environmental protection, in particular to a fecal sewage treatment method. Background technique [0002] Fecal sewage refers to the washing water excreted by residents in their lives, and it is defined as domestic sewage containing fecal matter, such as toilet flushing water. Fecal sewage is a typical high-concentration organic sewage. The basic task of fecal sewage treatment is to remove various organic substances. The existing fecal sewage treatment methods are mainly biological treatment methods, which use the life activities of microorganisms to degrade the organic matter in the dissolved or colloidal state in the sewage, thereby purifying the sewage. [0003] Patent document CN200310105989.4 discloses a method for biological treatment of fecal sewage suitable for portable public toilets or community public toilets, including the steps of anaerobic fermentation treatment and aer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/467C02F1/72
Inventor 滕一平周剑浩虞贺锋
Owner 国环电气科技(上海)有限公司
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