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Cable pit ash sluicing water treatment method

A treatment method and gray water flushing technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of acidity in desulfurization wastewater, achieve long service life and rapid reproduction , the effect of large biomass

Inactive Publication Date: 2016-02-17
STATE GRID SHANDONG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the desulfurization wastewater produced by it is acidic, and if it is discharged outside, alkaline substances need to be added to neutralize the pollutants

Method used

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  • Cable pit ash sluicing water treatment method

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Experimental program
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Effect test

Embodiment 1

[0026] A treatment method for flushing gray water in a cable trench, characterized in that it comprises the following steps:

[0027] (1) Put the gray water into the sedimentation tank for sedimentation: the gray water of the power plant enters the sedimentation tank for sedimentation, remove suspended matter, and adjust the pH value to 7-8

[0028] (2) Put the biological agent into the wastewater treated in step (1), wherein the weight ratio of the biological agent to the wastewater is 1:1000, and let it stand for a week.

[0029] The biological preparation is prepared as follows:

[0030] (1) Put the corn stalks into the pulverizer and pass through a 100-mesh sieve to obtain corn stalk powder;

[0031] (2) Culture Thiobacillus ferrooxidans, Thiobacillus thiooxidans, Pseudomonas aeruginosa and Sphingomonas to a concentration of 1×10 7 cells / ml of bacterial liquid, and then mixed according to the volume ratio of 3:1:2:2 to obtain the mixed bacterial liquid; the mixed bacteri...

Embodiment 2

[0042] The sewage treatment test of the biological agent prepared by the embodiment of the present invention 1:

[0043] The gray water of a power plant exceeds the index mainly due to ph, suspended solids, COD, ammonia nitrogen compounds, etc.

[0044] According to the method described in Example 1, the results of the detection and treatment of the gray water are shown in Table 1.

[0045] Table 1

[0046]

[0047] In conclusion, the treated wastewater complies with the GB / T18921-2002 urban anhydrous recycling standard, and fully meets the national first-level discharge standard

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Abstract

The invention belongs to the technical field of biological environmental protection, and discloses a cable pit ash sluicing water treatment method. The method adopts a specific biological preparation to treat ash sluicing water, and the biological preparation is prepared through culturing Thiobacillus ferrooxidans, Thiobacillus thiooxidans, Pseudomonas aeruginosa, Sphingomonas sp. and Scenedesmus obliquus, and mixing with a specific carrier. The biological preparation prepared in the invention can effectively treat ash sluicing water wastewater.

Description

technical field [0001] The invention belongs to the technical field of biological environmental protection, and in particular relates to a treatment method for flushing gray water in cable trenches. Background technique [0002] China's electric power is based on coal-based power generation structure, so the problem of fly ash is very prominent. As far as the national average is concerned, 250-300kg of fly ash is produced for every ton of coal burned. In the future, with the increase in the number of coal-fired power plants, the amount of ash output will also increase. A large amount of fly ash must be transferred from the power plant to the ash storage yard. It is more economical to use the hydraulic ash removal system to send the ash and slag to the ash yard. It is also the main way of ash removal in China at present. After being sent to the ash yard, the coarsely dispersed impurities in the ash slurry will settle down in the ash yard, and the clarified water can be dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
Inventor 刘松魏若琳王彬彬王卫波王倩王海滨朱正金
Owner STATE GRID SHANDONG ELECTRIC POWER
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