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Organic disintegrated sludge carbon source recycling method

A technology of organic sludge and sludge carbon, which is applied in sludge treatment, biological sludge treatment, chemical instruments and methods, etc. mud activity and other issues, to achieve the effect of reducing operating costs, achieving weight reduction, and simple operation

Inactive Publication Date: 2020-06-02
HUATIAN ENG & TECH CORP MCC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, sludge cracking releases a large amount of carbon sources, and at the same time produces a large amount of nitrogen and phosphorus. The sludge cracking liquid is directly reused in the sewage treatment system without treatment. On the one hand, it will increase the nitrogen and phosphorus load in the sewage biochemical system, and on the other hand Enrichment of Refractory Organic Matter in Sewage Treatment System Affects Sludge Activity

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  • Organic disintegrated sludge carbon source recycling method

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Embodiment 1

[0025] In this embodiment, the method for reusing organically decomposed sludge carbon sources comprises the following steps:

[0026] S1 Organic sludge cracking: The organic matter content of the organic sludge is 75%. The water content of the organic sludge is adjusted to 94% by using sewage. After adding lysozyme, perform high-pressure homogenization. The pressure of high-pressure homogenization is 35MPa, and the homogenization is performed once.

[0027] S2 hydrolyzed and acidified organic cracked sludge: Add 20 mg / g dry sludge of sodium persulfate and 12.8 mg / g dry sludge of ferrous sulfate to the organic cracked sludge obtained in S1, stir for 2 hours; inoculate and cultivate mature hydrolyzed acidified sludge Sludge, the inoculation amount is 1% of the volume of the organic decomposed sludge, continuously adjust the pH value of the sludge to 8, control the heating temperature to 45°C, and stir for 12 hours.

[0028] S3 denitrification and dephosphorization of hydrolyzed...

Embodiment 2

[0032] In this embodiment, the method for reusing organically decomposed sludge carbon sources comprises the following steps:

[0033] S1 Organic sludge cracking: The organic matter content of organic sludge is 75%, and the water content of organic sludge is adjusted to 92% by using sewage. After adding protease, perform high-pressure homogenization. The pressure of high-pressure homogenization is 60MPa, and homogenize once.

[0034] S2 Hydrolysis and acidification of organic decomposed sludge: add sodium persulfate 7mg / g dry sludge and calcium peroxide 12mg / g dry sludge to the organic decomposed sludge obtained in S1, stir for 1 hour; inoculate and cultivate mature hydrolyzed acidified sludge , the inoculation amount is 2% of the volume of the organic decomposed sludge, the pH value of the sludge is continuously adjusted to 6.5, the heating temperature is controlled at 50° C., and the stirring is carried out for 12 hours.

[0035] S3 hydrolysis and acidification sludge denitr...

Embodiment 3

[0039] In this embodiment, the method for reusing organically decomposed sludge carbon sources comprises the following steps:

[0040] S1 organic sludge cracking: the organic matter content of organic sludge is 75%, the water content of organic sludge is adjusted to 94% by sewage, and after adding protease and magnesium oxide 10mg / g dry sludge, perform high-pressure homogenization, and the pressure of high-pressure homogenization is 70MPa, homogenized once.

[0041] S2 hydrolyzed and acidified organic cracked sludge: Add 20 mg / g dry sludge of sodium persulfate and 12.8 mg / g dry sludge of ferrous sulfate to the organic cracked sludge obtained in S1, stir for 2 hours; inoculate and cultivate mature hydrolyzed acidified sludge Sludge, the inoculation amount is 1% of the volume of the organic decomposed sludge, continuously adjust the pH value of the sludge to 8, control the heating temperature to 45°C, and stir for 12 hours.

[0042] S3 denitrification and dephosphorization of h...

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Abstract

The invention discloses an organic disintegrated sludge carbon source recycling method. The method comprises the following steps: hydrolyzing and acidifying organic disintegrated sludge; carrying outnitrogen and phosphorus removal on the hydrolyzed and acidified sludge; and recycling sludge disintegration liquid. Organic sludge is disintegrated through high-pressure homogenization and biologicalenzyme, the concentrations of nitrogen and phosphorus in the disintegrated liquid are reduced by a chemical technology after hydrolytic acidification, the biodegradability of the organic sludge is improved, and the obtained disintegrated liquid can be recycled to a sewage treatment system, so that an externally added carbon source is saved, the operation cost of a sewage plant is reduced, and reduction and recycling of the sewage sludge are realized.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a method for reusing organic cracked sludge carbon sources. Background technique [0002] According to the "Statistical Yearbook of Urban Construction", the output of urban sewage sludge (with a moisture content of 80%) in my country in 2017 was about 62.1 million tons per year. The current disposal methods of urban sludge are mainly incineration and sanitary landfill, and the resource utilization of sludge has not been realized. my country's urban sewage treatment plants generally have the problem of insufficient carbon sources in the influent, and additional external carbon sources such as methanol and sodium acetate need to be added to improve the efficiency of nitrogen and phosphorus removal in the biochemical system of sewage plants. This greatly increases the operating cost of the sewage plant. [0003] The organic matter content of sewage sludge in my country is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02C02F11/00C02F11/121
CPCC02F11/00C02F11/02C02F11/121
Inventor 刘金光高卫民
Owner HUATIAN ENG & TECH CORP MCC
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