Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of flocculant for removing low-temperature low-turbidity phosphorous wastewater

A wastewater flocculant and low turbidity technology, applied in the field of water treatment, can solve the problems of low turbidity, low temperature of treated water, low phosphorus removal rate, etc., and achieve good flocculation effect, large flocs and short formation time

Inactive Publication Date: 2013-12-11
CHANGZHOU UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that the treatment water temperature is usually low, and the turbidity is low, clear and transparent, the flocculation effect of the flocculant is not obvious, and the removal rate of phosphorus is not high. The preparation method of flocculant

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] First, take a 250mL three-neck round bottom flask, install a blender on the middle bottle mouth, insert a thermometer into the left bottle mouth, add 50mL aluminum hydrochloric acid and 175mL water to the right bottle mouth, and heat and stir in an electric furnace after the cork is tightly closed. Add 3g Fe when the heating temperature rises to 65°C 3 o 4 Powder, 20gAl 2 (SO 4 ), 3 8gMgCl 2 , 2gMnO 2 , continue stirring and heating, when the heating temperature rises to 85°C, add 50gAl 2 o 3 Calcium aluminate powder with a content of 52% reacts rapidly and the temperature rises. Stir the reaction at a temperature of 115°C for 2.5 hours, keep the temperature at 115°C, add 3g of octadecyltrimethylammonium bromide, and continue stirring for 20 minutes. Let it ripen after stopping stirring.

[0024] To remove phosphorus from wastewater in a certain river, dilute the flocculant prepared above by 10 times with distilled water, then take 0.5mL of the diluted solution ...

example 2

[0026] First, take a 250mL three-neck round bottom flask, install a blender on the middle bottle mouth, insert a thermometer into the left bottle mouth, add 53mL aluminum hydrochloric acid and 177mL water to the right bottle mouth, and heat and stir in an electric furnace after the cork is tightly closed. Add 4g Fe when the heating temperature rises to 65°C 3 o 4 Powder, 21gAl 2 (SO 4 ) 3 , 9gMgCl 2 , 2.5gMnO 2 , continue stirring and heating, when the heating temperature rises to 85°C, add 51gAl 2 o 3 Calcium aluminate powder with a content of 52% reacts rapidly and the temperature rises. Stir and react at a temperature of 115°C for 2.5 hours, keep the temperature at 115°C, add 4g of octadecyltrimethylammonium bromide, and continue stirring for 20 minutes. Let it ripen after stopping stirring.

[0027] Take natural wastewater for phosphorus removal treatment, dilute the flocculant prepared above 10 times with distilled water, take 0.6mL of the diluted solution and add...

example 3

[0029] First, take a 250mL three-neck round bottom flask, install a blender on the middle bottle mouth, insert a thermometer into the left bottle mouth, add 55mL aluminum hydrochloric acid and 180mL water to the right bottle mouth, and heat and stir in an electric furnace after the cork is tightly closed. Add 5g Fe when the heating temperature rises to 65°C 3 o 4 Powder, 22gAl 2 (SO 4 ) 3 , 10gMgCl 2 , 3gMnO 2 , continue stirring and heating, when the heating temperature rises to 85°C, add 52gAl 2 o 3 Calcium aluminate powder with a content of 52% reacts rapidly and the temperature rises. Stir and react at a temperature of 115°C for 2.5 hours, keep the temperature at 115°C, add 5g of octadecyltrimethylammonium bromide, and continue stirring for 20 minutes. Let it ripen after stopping stirring.

[0030] To remove phosphorus from a certain river wastewater, dilute the flocculant prepared above 10 times with distilled water, then take 0.7mL of the diluted solution and add...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a flocculant for removing low-temperature low-turbidity phosphorous wastewater. The preparation method includes: adding Fe3O4 powder, Al2 (SO4)3, MgCl2 and MnO2 when the temperature rises to 65 DEG C, and continuously stirring and heating; adding aluminum acid calcium with a certain mass content of Al2O3 when the temperature rises to 85 DEG C, and stirring for reaction for 2.5 hours at the temperature of 115 DEG C; and keeping the temperature of 115 DEG C, adding octadecyl trimethyl ammonium bromide and continuously stirring prior to curing. The polyhydroxy multi-metal-core polymer inorganic flocculant is obtained by preparation and has remarkable flocculation effects in treatment of the low-temperature low-turbidity phosphorous wastewater, alum floc forming time is short, flocs are large and firm, the phosphorus content in the treated water can be lower than 0.2mg / L, and removal rate is higher than 97%.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a preparation method of a flocculant for removing low-temperature, low-turbidity phosphorus-containing wastewater. Background technique [0002] Phosphorus is an important industrial raw material, which is widely used in industrial production such as chemical fertilizers, detergents, food and beverage, and metallurgy. Therefore, phosphorus-containing wastewater is inevitably generated in industrial production. If the untreated phosphorus-containing wastewater is discharged to In the water body, it will not only cause a waste of phosphorus resources, but more importantly, phosphorus is a eutrophic substance in the water. The phosphorus content in the water body exceeds 50 μg / L, which will help the growth of algae and affect the quality of surface water. It is of great significance to study the efficient phosphorus removal agent to improve the coagulation effect to control the phosph...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
Inventor 雷春生王情思
Owner CHANGZHOU UNIV