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Resource utilization method of residual sludge from petrochemical organic wastewater biological treatment

A technology for excess sludge and organic wastewater, applied in the field of solid waste resource utilization, can solve problems such as limiting the output of ceramsite filter materials, and achieve the effect of saving fuel consumption, high content, energy saving and emission reduction.

Inactive Publication Date: 2014-02-05
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional ceramsite filter materials mainly use non-renewable resources such as clay and shale as raw materials, which limits the output of ceramsite filter materials

Method used

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  • Resource utilization method of residual sludge from petrochemical organic wastewater biological treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Drying of raw materials

[0025] The remaining petrochemical sludge, clay, and river sediment were dried at 105°C, and then pulverized in a planetary ball mill, sieved through 100 mesh, and collected for later use. Fly ash was dried at 105°C and passed through a 100-mesh sieve for later use. The civil building waste glass is mechanically crushed to less than 5mm, then placed in a planetary ball mill to crush, sieved through 100 mesh, and collected for later use.

[0026] (2) Raw material mixing, granulation and drying

[0027] Weigh 20g of petrochemical and biochemical residual sludge, 30g of fly ash, 40g of river sediment, and 10g of glass powder, mix well, add 25-30g of water to granulate to obtain sludge raw meal particles, and the particle size of the raw meal particles is controlled At 4-7mm; and place it in an oven to dry at 105°C.

[0028] (3) Calcination of filter material

[0029] Place the dried sludge raw meal particles in a tubular sintering furnace,...

Embodiment 2

[0032] The difference between Example 2 and Example 1 lies in the reduction of residual petrochemical sludge and the increase of river sediment, the preheating temperature and preheating time are increased, and other operating conditions remain unchanged. The difference between Example 3 and Example 1 is that the amount of petrochemical residual sludge and fly ash is reduced, the amount of river sediment is increased, the preheating temperature is increased and the preheating time is extended, and other operating conditions remain unchanged. . Example 4 is similar to Example 1 in that the amount of petrochemical residual sludge, fly ash, and river sediment is reduced, the amount of clay is increased, the preheating temperature is increased and the preheating time is extended, and other operating conditions constant.

[0033] The concrete raw material ratio of embodiment 1-4 is shown in Table 1, and the physical and chemical performance index of the filter material product of ...

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Abstract

The invention discloses a resource utilization method of residual sludge from petrochemical organic wastewater biological treatment (shortened form as petrochemical residual sludge). Provided is a method for preparing a spherical lightweight water treatment filter material by mixing raw materials of petrochemical residual sludge, river sediment, coal ash, civil construction waste glass and clay according to a certain proportion. The filter material comprises the following components by weight: 10-20% of petrochemical sludge, 20-30% of fly ash, 30-50% of river sediment, 10% of waste glass powder, 0-25% of clay and water accounting for 25-30 wt% of the raw materials. The materials are subjected to granulation, drying and high temperature sintering in order. The obtained filter material has physical and chemical performance indexes reaching the requirements of CJ-T299-2008 criteria for artificial ceramsite filter for water treatment. The raw materials used in the invention are solid wastes in a large amount; and the method has the advantages of wide material source, simple preparation process and high added value of products. In addition, the petrochemical residual sludge and river sediment have high organic matter content and high calorific value, so as to save the fuel consumption in the sinter process and contribute significantly to energy saving and emission reduction.

Description

technical field [0001] The invention belongs to the field of resource utilization of solid waste, and specifically relates to a method of using excess sludge (abbreviation: petrochemical excess sludge) produced in the biological treatment process of petrochemical organic wastewater, river bottom sludge, fly ash, and civil construction waste. The invention relates to a method for preparing a water treatment filter material from a large amount of solid waste such as glass as a raw material. Background technique [0002] Petrochemical organic wastewater is a typical organic chemical industrial wastewater. When the activated sludge method (or biofilm method) is used for purification treatment, the remaining sludge not only contains biological residues, but also includes intermediates generated during microbial degradation. Products, colloids and dissolved organic matter adsorbed on the surface of activated sludge, some inorganic matter and a small amount of heavy metal elements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B33/132B01D39/20
CPCY02P40/60
Inventor 张文艺戴如娟郑泽鑫刘芳吴凌云
Owner CHANGZHOU UNIV
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