Sludge resourceful treatment method and application

A technology of recycling and sludge, applied in the field of comprehensive utilization of sewage resources, can solve the problems of high cost and low efficiency, and achieve the effect of convenient operation, convenient use and satisfying industrial production.

Active Publication Date: 2017-05-31
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the defects of high cost and low efficiency in various sludge treatment and resource recovery methods in the prior art, the purpose of the present invention is to provide a method that can quickly, efficiently and low-cost realize sludg...

Method used

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  • Sludge resourceful treatment method and application
  • Sludge resourceful treatment method and application
  • Sludge resourceful treatment method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0045] The process method is used to treat the municipal sludge of the municipal sewage treatment plant, the water content of which is about 81%. Add compound enzyme 200g / t in sludge (complex enzyme is made of α-glucanase, β-glucanase, pectinase, protease, mannase and helicase in mass ratio 10:10:2:1 :1:1 composition), adjust the pH to 7.5 with sodium hydroxide, maintain the temperature at 20-25°C, stir at a speed of 500r / min for 2h, and carry out the sludge biological cell wall pretreatment; The magnetic medium (magnetite) 1000g / t is transferred to a stirring high-speed pulverizer with a steel ball filling rate of 50% for high-speed (rotational speed is about 6000r / min) grinding for 10min to carry out deep wall breaking; After the completion, use a magnetic separator with a magnetic field strength of 800GS to recover the magnetic medium and reuse it. The sludge is centrifuged in a centrifuge for solid-liquid separation. Enter into a carbonization furnace at a temperature of ...

Embodiment 2

[0051] The process method is used to treat the activated sludge of the sewage treatment plant in the industrial park, the water content of which is about 72%. Add compound enzyme 300g / t (composite enzyme is made of α-glucanase, β-glucanase, pectinase, protease, mannase and helicase by mass ratio 10:12:1:1.5 in sludge) :0.8:0.8 composition), adjust the pH to 7.8 with sodium hydroxide, maintain the temperature at 20-25°C, stir at a speed of 300r / min for 1h, and carry out the sludge biological cell wall pretreatment; then add the sludge with a fineness of less than 37μm The magnetic medium (pyrhotite) 1000g / t is transferred to the agitating high-speed pulverizer with a steel ball filling rate of 30% for high-speed (rotational speed is about 6000r / min) grinding for 15min to carry out deep wall breaking; After the wall is completed, use a magnetic separator with a magnetic field strength of 500GS to recover the magnetic medium and reuse it. The sludge is separated from the solid an...

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Abstract

The invention discloses a sludge resourceful treatment method and application. According to the method, sludge is treated by a biological enzyme and is then mixed with a magnetic medium; a mixture is transferred into a sludge cell wall breaking device to be subjected to wall breaking treatment; the sludge obtained after the wall breaking treatment is subjected to magnetic separation to recover the magnetic medium; then, solid-liquid separation is performed; the solution ingredients obtained through the solid-liquid separation are subjected to concentration, alcohol precipitation and drying to obtain organic matter ingredients; the solid ingredients obtained after the solid-liquid separation are carbonized to obtain carbonized particles; the organic matter ingredients are used as mineral flotation surface modifiers; carbon particles are used as fuel or adsorption materials to be used; the sludge resourceful utilization can be really realized. The method has the advantages that the sludge cell wall breaking can be fast and efficiently realized at low cost; useful ingredients are extracted from the sludge; the process is simple; the operation is convenient; the industrial production requirements are met.

Description

technical field [0001] The invention relates to a sludge treatment method, in particular to a sludge wall breaking technology and a method for extracting organic matter components and carbonized particles from sludge to realize sludge resource treatment, belonging to the technical field of comprehensive utilization of sewage resources. Background technique [0002] Since the National Development and Reform Commission put forward the bill on energy conservation and emission reduction in 2007, more and more people have put forward golden ideas for energy conservation and emission reduction. Coupled with the frequent occurrence of natural disasters and climate change in recent years, the country proposed the concept of "low carbon" in 2008, and this year more and more people are promoting low carbon life. With the rapid development of the economy, the treatment rate of urban sewage and industrial wastewater in my country is also increasing year by year. At the same time, a larg...

Claims

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Application Information

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IPC IPC(8): C02F11/02C02F11/10C02F11/00
CPCC02F11/00C02F11/02C02F11/10
Inventor 孙伟胡岳华韩海生
Owner CENT SOUTH UNIV
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