Preparation method of sludge ceramsite capable of slowly releasing trace metal elements including copper and nickel

A technology for metal elements and sludge ceramsite, which is applied in the production of clay products, ceramic materials, other household appliances, etc., can solve the problems of reduced biological activity, reduced biological effectiveness, heavy metal pollution in water, etc. Low cost and easy availability of raw materials

Inactive Publication Date: 2015-07-29
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lack of trace metal elements will lead to a decrease in biological activity, which will affect the operation effect and stability of the entire bioreactor
Directly adding trace metal element salts can provide the necessary t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method for slowly releasing trace copper and nickel metal element sludge ceramsite, comprising the following process steps:

[0017] 1. Dry the sewage sludge, fly ash and clay at 105 ℃ to constant weight, crush them with a universal grinder, and sieve them with a 200-mesh sieve for later use. Weigh 5g of sieved sludge, 7g of fly ash, and 8g of clay respectively, stir evenly, then slowly add water dropwise and stir fully, stop when the raw materials are wet, put them into a press and extrude them or make them by hand Spherical granular raw ceramsite was obtained from the pellets, and spherical particles with a particle size of 4-6 mm were made into spherical particles with a particle size of 4-6 mm. They were dried in an electric constant temperature blast dryer at 100 °C, and put into a box-type resistance furnace to raise the temperature to 450 °C for pre-treatment. Heat for 20 minutes, then raise the temperature to 1050°C for calcination for 16 minutes, ...

Embodiment 2

[0020] A preparation method for slowly releasing trace copper and nickel metal element sludge ceramsite, comprising the following process steps:

[0021] 1. Dry the sludge, fly ash, and clay from the sewage plant to constant weight at 105°C, pulverize them with a universal pulverizer, and sieve them with a 200-mesh sieve. Weigh 1.2g of the sieved sludge, powder Coal ash 1.8g, clay 2g, stir evenly, then slowly add water dropwise and stir fully, stop when the raw materials are wet, granulate by hand, make spherical particles with a particle size of 4~6 mm, and dry them with electric heating and constant temperature blasting Dry the inside of the device at 100°C, put it into a box-type resistance furnace and heat it up to 450°C for 20 minutes, then heat it up to 1050°C for calcination for 16 minutes, cool it down naturally, take it out and cool it to room temperature, put the ceramsite into a mixture containing 0.5 mol / L CuCl 2 and 1.0mol / L NiCl 2 Immerse in the mixed solution ...

Embodiment 3

[0024] A preparation method for slowly releasing trace copper and nickel metal element sludge ceramsite, comprising the following process steps:

[0025] 1. Dry the sewage sludge, fly ash and clay at 105 ℃ to constant weight, pulverize them with a universal pulverizer, and sieve them with a 200-mesh sieve for later use. Weigh 250g of sieved sludge, 350g of fly ash, and 400g of clay, stir evenly, then slowly add water dropwise and stir fully, stop when the raw materials are wet, put them into a press, extrude and cut to obtain raw meal The ceramsite is dried at 100°C in an electric constant temperature blast dryer, put into a box-type resistance furnace and heated to 450°C for 20 minutes, and then heated to 1050°C for 16 minutes to be calcined. At room temperature, put the ceramsite in a solution containing 1.0mol / L CuCl 2 and 1.0mol / L NiCl 2 Immerse in the mixed solution for 24 hours, take it out and dry it.

[0026] 2. Mix 150mL of epoxy resin, 150mL of amide resin, and 60...

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Abstract

A preparation method of sludge ceramsite capable of slowly releasing trace metal elements including copper and nickel is implemented as follows: sludge, coal ash and clay of a sewage plant are dried respectively and sieved with a 200-mesh sieve, 3-5 g of sludge, 6-8 g of coal ash and 8-10 g of clay are weighed and stirred uniformly, an appropriate amount of water is slowly added to the mixture and sufficiently stirred, the mixture is put in a press machine and subjected to extrusion forming, raw ceramsite with the diameter of 4-6 mm is obtained, dried at the temperature of 100 DEG C, preheated for 20 min and calcined at the temperature of 1,050 DEG C for 16 min, and the sludge ceramsite is prepared; the ceramsite is put into a mixed solution containing CuCl2 and NiCl2 to be soaked, then taken out and dried for standby application; a cladding material is prepared by mixing epoxy resin, acidamide resin, an ethanol solution and starch, soaked and well dried ceramsite is added and stirred, accordingly, the surface of the ceramsite is uniformly coated with the mixture and put in a drying oven to be dried, and the sludge ceramsite capable of slowly releasing the trace metal elements including copper and nickel is prepared. The ceramsite is applicable to anaerobic biological treatment of organic wastewater lack of trace metals Cu2+ and Ni2+, and the COD (chemical oxygen demand) removal rate of the wastewater can be increased by more than 12%.

Description

technical field [0001] The invention relates to a method for preparing sludge ceramsite by a sintering method, in particular to a preparation method for slowly releasing trace copper and nickel metal elements sludge ceramsite. Background technique [0002] In the process of anaerobic biological treatment of wastewater, trace metal elements participate in the composition of enzymes and are an indispensable part of synthetic microbial cells. For example, copper is a component and stimulator of various enzymes (tyrosine oxidase, sulfide oxidase, xanthine oxidase, diamine oxidase, galactase, tyrosinase, cytochrome oxidase); nickel It is a component of coenzyme, hydrogenase, methanogen F430 and carbon monoxide dehydrogenase, which promotes the growth of methanogens and the formation of methane. The lack of trace metal elements will lead to the reduction of biological activity, which will affect the operation effect and stability of the whole bioreactor. Directly adding trace me...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B41/85C04B41/83
CPCY02P40/60
Inventor 苏会东时冬玲陈文超赵孝明王伟光
Owner SHENYANG LIGONG UNIV
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