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Comprehensive treating method for industrial waste water and sludge using coke powder

A technology for comprehensive treatment of industrial wastewater, applied in water/sludge/sewage treatment, sludge treatment, water/sewage treatment, etc. Only input and other issues

Inactive Publication Date: 2007-04-25
SHENYANG DAVID ENVIRONMENT PROTECTION & ENERGY SAVING EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Existing industrial wastewater and sludge treatment projects and facilities occupy a large area, require large investment and high operating costs
[0004] (2) The existing industrial wastewater and sludge treatment methods only consider the disposal of corporate pollutants, and there is a singleness in pollution prevention measures and environmental protection projects
[0005] (3) In the process of treatment and operation of the existing industrial wastewater and sludge treatment methods and facilities, the enterprise only invests and cannot generate benefits for the enterprise, resulting in the lack of initiative and enthusiasm for the treatment of industrial wastewater and sludge
[0006] (4) The existing industrial wastewater and sludge treatment methods (such as landfill and incineration) not only consume natural resources (such as land and energy), but also easily produce secondary pollution
[0007] Is it possible to use coke powder, a large amount of waste produced in the production process of coking enterprises, to treat the pollutants produced in the production process of enterprises - industrial wastewater and sludge, and to synthesize the effective components of waste and pollutants in the production process of enterprises , Crossover, bundled utilization, using waste to control pollutants, so that industrial wastewater and sludge can be harmlessly treated and comprehensively utilized as resources, which has not been reported so far

Method used

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  • Comprehensive treating method for industrial waste water and sludge using coke powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Coke powder is used to treat industrial wastewater to generate coke filter sludge, and the coke filter sludge and coke powder are combined to make waste liquid coke slurry. The wastewater composition of a paper mill is: COD value 3,000mg / L, suspended solids: 800mg / L, chroma 430 times. Add coke powder with a particle size of 0.2-1mm and no less than 40% of >0.5mm in the filter tank as filter and adsorption materials. The thickness of the material bed is 0.5-2m, the filtration speed is 0.16-0.4m / min, and the contact time is 10 -20min. When the wastewater flows through the coke powder in the filter tank, it removes the suspended solids and colloidal substances in the wastewater, absorbs organic matter and harmful microorganisms, and plays the role of deodorization and decolorization. The coke powder in the filter tank becomes saturated coke filter sludge after a period of use, and the saturated coke filter sludge in the filter tank is discharged regularly and transported ...

Embodiment 2

[0052] The waste liquid coke slurry is prepared by combining the concentrated waste water from the paper mill-cooking liquid with coke powder. A small test is required before each batch of pulp is made. The particle size of coke powder is as mentioned above. When pulping, add 30% cooking liquid and 70% coke powder to the pulping tank, and then add 0.3-0.6% of the pulping amount to disperse agent, start the agitator on the top of the pulping tank, the agitation time is 30-40min, and the agitation intensity is 90-98r / min. Then add 0.3-0.8% stabilizer with slurrying amount to carry out stirring and ripening, the stirring intensity is 90-98r / min, and the stirring time after adding the stabilizer shall not exceed 40min. After being sheared by a high-speed shearing machine, it is transported to a storage tank for storage. The waste liquid coke slurry in the storage tank needs to be stirred for 20 minutes every 4 hours according to the situation, and at least every 12 hours should b...

Embodiment 3

[0055] The sludge produced in the process of industrial wastewater treatment is combined with coke powder to make waste liquid coke slurry. Sludge, coke powder, dispersant, and stabilizer are added in proportion to the slurry tank and mixed to make boiler fuel-waste liquid coke slurry. Before pulping, the sludge should be tested to check the moisture content and composition, and a small test should be carried out before each batch of pulp is made. According to the moisture content of the sludge during pulping, sludge and coke fine powder are added to the slurry tank according to the following ratio:

[0056] Sludge moisture content

40％

45％

50％

55％

60％

65％

70％

75％

80％

Sludge ratio

75％

67％

60％

55％

50％

46％

43％

40％

38％

Ratio of coke powder

25％

33％

40％

45％

50％

44％

57％

60％

6...

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Abstract

The comprehensive treatment process of industrial waste water and sludge with coke powder includes following steps of: adding coke powder as filtering material and optional lime powder or waste beer yeast mud into filtering pond; making waste liquid-coke slurry with filtering coke mud produced during processing industrial waste water and life sewage with coke powder and concentrated industrial waste water in certain ratio; mixing coke powder, coke mud, sludge, industrial waste water and dispersant in a slurry preparing tank, adding stabilizer for ageing, processing in high speed shearing machine and storing in tank; and using the waste liquid-coke slurry and coal powder as fuel for double-fuel circular fluidizing bed boiler. The boiler has its burning temperature controlled and fume treating apparatus is installed.

Description

technical field [0001] The invention belongs to the technical field of wastewater, sewage and sludge treatment, and in particular relates to a method for comprehensive treatment of industrial wastewater and sludge by using coke powder, which is suitable for papermaking, chemical industry, tanning, printing and dyeing, food processing, brewing, Harmless treatment and comprehensive resource utilization of waste liquid, wastewater, and sludge from urban sewage treatment and other enterprises. Background technique [0002] The existing methods have certain deficiencies in the treatment of industrial wastewater, urban domestic sewage, and sludge generated in the process of industrial wastewater treatment in the production process of papermaking, tanning, printing and dyeing, chemical industry, and brewing industries, resulting in serious problems for rivers, waters and the environment. ground pollution, the existing treatment methods have the following disadvantages: [0003] (1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00C02F1/28C02F11/00B09B3/00
Inventor 张大伟郭雁斌
Owner SHENYANG DAVID ENVIRONMENT PROTECTION & ENERGY SAVING EQUIP LTD
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