Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation process of polyaluminum chloride coagulant for purifying wastewater

A technology for the preparation of polyaluminum chloride, applied in the direction of aluminum chloride, aluminum halide, aluminum compounds, etc., can solve the problems of single coagulant function, high COD concentration, complex wastewater components, etc., and achieve increased degradation and flocculation effects , Wide range of applications, high comprehensive processing performance

Pending Publication Date: 2022-02-01
吉林省正达环保工程有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Antibiotic wastewater and heavy metal polluted wastewater have complex components, containing a large number of intermediate metabolites, surfactants, and high-concentration acids, alkalis, and various organic substances remaining in extraction and separation. The concentration of COD and SS is high, and the discharge after simple treatment It is very harmful to water supply systems such as industrial and agricultural water sources and circulating water. In the coagulation step of wastewater treatment, the function of the coagulant used is relatively single, which is not suitable for such complex water bodies.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation process of polyaluminum chloride coagulant for purifying wastewater
  • Preparation process of polyaluminum chloride coagulant for purifying wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation process of polyaluminum chloride coagulant for purifying waste water comprises the following steps:

[0026] Taking the preparation of 1000kg of coagulant as an example, add 770kg of water to the stirred reactor, add 90kg of polyaluminium chloride under stirring, and add 55kg of Na 3 PO 4 12H 2 O as a stabilizer, add 10kg of lime powder, stir for 30min, then add 45kg of starch, stir evenly, the above stirring reaction temperature is controlled at 55°C, and the stirring speed is 40r / min, after stirring evenly, add 30kg of crystallized glucose, at 40 Stir and react at ~50°C for 1-3 hours to obtain a coagulant.

Embodiment 2

[0028] A preparation process of polyaluminum chloride coagulant for purifying waste water comprises the following steps:

[0029] Taking the preparation of 1000kg of coagulant as an example, add clear water to the stirred reactor, add 750kg of water, add 97.5kg of polyaluminium chloride under stirring, and add 62.5kg of Na 3 PO 4 12H 2 O as stabilizer, add 12.5kg lime powder, stir 30min, then add starch 50kg, stir evenly, the above stirring reaction temperature is controlled at 55 ℃, and stirring speed is 40r / min, after stirring evenly, add crystalline glucose 28kg, in Stir and react at 40-50°C for 1-3 hours to obtain a coagulant.

Embodiment 3

[0031] A preparation process of polyaluminum chloride coagulant for purifying waste water comprises the following steps:

[0032] Taking the preparation of 1000kg of coagulant as an example, add 729kg of water to the stirred reactor, add 105kg of polyaluminum chloride under stirring, and add 70kg of Na 3 PO 4 12H 2 O as stabilizer, add 15kg lime powder, stir 30min, then add starch 55kg, stir evenly, the above stirring reaction temperature is controlled at 55 ℃, and stirring speed is 40r / min, after stirring evenly, add crystalline glucose 26.25kg, in Stir and react at 40-50°C for 1-3 hours to obtain a coagulant.

[0033] The coagulant obtained above can be used in the coagulation step of sewage treatment such as antibiotic waste water and heavy metal polluted waste water, and the application effect is good.

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 relates to a preparation process of a polyaluminum chloride coagulant for purifying wastewater, which comprises the following steps: (1) fully dissolving a certain amount of polyaluminum chloride, adding Na2CO3 powder into the solution, and uniformly conducting stirring; (2) adding a certain amount of stabilizer Na3PO4.12H2O, and conducting stirring for dissolving; (3) adding a certain amount of lime powder, conducting stirring, and adjusting the pH value of the solution obtained in the step (2) to 8-9; (4) adding a certain amount of starch into the solution of which the pH value is adjusted, and uniformly conducting stirring; and (5) adding crystalline dextrose in multiple times according to the mass ratio of polyaluminum chloride to crystalline dextrose of (3-4):1, and conducting stirring and reacting at 40-50 DEG C for 1-3 hours to prepare the coagulant. The product prepared by the invention increases the compounding effect of polyaluminum chloride, and is suitable for flocculation treatment of various complex water bodies.

Description

technical field [0001] The invention belongs to the technical field of water purification, and in particular relates to a preparation process of a polyaluminum chloride coagulant for purifying waste water. Background technique [0002] Coagulation is an indispensable pre-unit in the water treatment process, and the coagulant is the most critical factor affecting the coagulation performance. Antibiotic wastewater and heavy metal polluted wastewater have complex components, containing a large number of intermediate metabolites, surfactants, and high-concentration acids, alkalis, and various organic substances remaining in extraction and separation. The concentration of COD and SS is high, and the discharge after simple treatment It is very harmful to water supply systems such as industrial and agricultural water sources and circulating water. In the coagulation step of wastewater treatment, the coagulant used has a single function and is not suitable for such complex water bod...

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
IPC IPC(8): C01F7/57C02F1/52
CPCC01F7/56C02F1/5236
Inventor 张鹏安波
Owner 吉林省正达环保工程有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com