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Method and apparatus for sludge deep treatment and resource utilization

A technology for advanced treatment and sludge conditioning, which is applied in sludge treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc. It can solve the problems of low investment cost, difficult control, difficulty in ensuring treatment efficiency and Product quality and other issues

Active Publication Date: 2013-10-23
GUANGDONG PROVINCIAL ACADEMY OF ENVIRONMENTAL SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the traditional sludge treatment technology and solve the problems of the existing sludge carbonization treatment technology, such as the inability to guarantee the source of fuel, high energy consumption, difficult control, difficulty in ensuring treatment efficiency and product quality, etc., and provides a The sludge advanced treatment method and corresponding equipment based on the preparation of biochar have the advantages of low investment cost, high treatment efficiency, sustainability, recycling, and convenient management.

Method used

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  • Method and apparatus for sludge deep treatment and resource utilization
  • Method and apparatus for sludge deep treatment and resource utilization
  • Method and apparatus for sludge deep treatment and resource utilization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] When the sludge is treated by the above device, first add 2000L of domestic sludge with a water content of 96% to the sludge conditioning reaction tank, then add 6kg of sodium hypochlorite and 30L of concentrated sulfuric acid, stir for 60min, and then add FeSO4 20kg, ZnCl 2 30kg and stirred for 3 minutes, and finally add 8kg of organic polymer coagulant octadecyltrimethylammonium chloride and stir for 3 minutes, then use a diaphragm plate frame filter press to feed the mud for 120 minutes under a pressure of 0.8MPa, and then use hydraulic pressure at 0.8MPa Press the diaphragm for 20 minutes under a certain pressure, weigh the mud cake, and determine that the moisture content of the sludge is 59%.

Embodiment 2

[0042] When the sludge is treated by the above device, first add 2000L of domestic sludge with a water content of 96% to the sludge conditioning reaction tank, then add 10kg of sodium hypochlorite and 40L of concentrated sulfuric acid, stir for 80min, and then add FeSO 4 20kg, ZnCl 2 30kg and stirred for 4 minutes, and finally added 8kg of organic polymer coagulant octadecyltrimethylammonium chloride and stirred for 4 minutes, then used a diaphragm plate and frame filter press to feed the mud for 120 minutes under a pressure of 0.8MPa, and then used hydraulic pressure at 0.8MPa Press the diaphragm for 20 minutes under a certain pressure, weigh the mud cake, and determine that the moisture content of the sludge is 56%. Example 3

Embodiment 3

[0043] When the sludge is treated by the above device, first add 2000L of domestic sludge with a water content of 96% to the sludge conditioning reaction tank, then add 6kg of sodium hypochlorite and 30L of concentrated sulfuric acid, stir for 60min, and then add FeSO 4 30kg, ZnCl 2 40kg was stirred for 4 minutes, and finally 8kg of organic polymer coagulant octadecyltrimethylammonium chloride was added and stirred for 4 minutes, and the diaphragm plate and frame filter press was used to feed the mud under the pressure of 0.8MPa for 120min, and then the hydraulic pressure was used to filter at 0.8MPa Press the diaphragm for 20 minutes under the pressure of 20 minutes, weigh the mud cake, and determine that the moisture content of the sludge is 58%.

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Abstract

The invention relates to a method and an apparatus for sludge deep treatment and resource utilization. According to the method, the sludge is treated by using a combined process of conditioning, rupturing membrane, adding materials, removing water, drying rapidly and pyrolyzing the sludge at a low temperature. The sludge is treated by a treatment apparatus comprising a sludge conditioning material-feeding system, a sludge membrane-rupturing reactor, a sludge dewatering machine, a sludge dryer, a sludge pyrolyzing furnace, a biomass fuel heating supply system and a flue gas purification system. The method can overcome the disadvantages of high energy consumption and low efficiency of a conventional process. A biochar product with excellent performance and high environmental safety can be obtained, and reduction, harmlessness and resource of the sludge can be realized.

Description

technical field [0001] The invention relates to a method and device for advanced sludge treatment and resource utilization, in particular to a method and device for treating sludge by using a combined process of membrane rupture, dehydration, drying, and pyrolysis to generate biochar, and is especially suitable for producing biochar in domestic sewage treatment plants. The remaining sludge, as well as industrial sludge produced in printing and dyeing, textile, paper and other industries. Background technique [0002] Sludge is a by-product of domestic sewage and industrial wastewater treatment. With the rapid development of my country's economy and the expansion of the production scale of industrial enterprises, the sludge output is increasing year by year. Due to the lag of sludge treatment technology, many sewage treatment plants and enterprises are faced with the dilemma of being overwhelmed with "mud" and having no way out. In recent years, serious environmental pollut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/10C02F11/12C02F11/14
CPCY02W10/40
Inventor 卢欢亮叶向东汪永红李朝晖黄志华王刚
Owner GUANGDONG PROVINCIAL ACADEMY OF ENVIRONMENTAL SCI
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