Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Diatomaceous earth-based microbial flocculating agent for sewage treatment, and preparation method thereof

A microbial flocculant and sewage treatment technology, applied in water/sewage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve poor flocculation and sedimentation effects, complicated cultivation process, unstable properties, etc. problems, achieve good flocculation effect, good flocculation effect, and enhanced environmental adaptability

Inactive Publication Date: 2019-01-11
CHENDU NEW KELI CHEM SCI CO LTD
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the microbial flocculants used for sewage treatment in the prior art have disadvantages such as complicated cultivation process, low yield, unstable properties, high preparation cost, and poor flocculation and sedimentation effect.

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

Embodiment 1

[0027] Diatomite with a particle size of 100 μm is washed with dilute sulfuric acid, and then washed with water to obtain pretreated diatomite; the treated diatomite is mixed with Bacillus subtilis, Pseudomonas and Arthrobacter Mix the bacterial solution and 5% sodium carbonate solution, stir evenly, and freeze-dry to obtain pre-fixed microbial bacteria; drop saturated calcium chloride solution into the pre-fixed microbial bacteria, shake at a constant temperature of 40°C for 40 minutes; then let it stand After 3 hours, the particles were filtered out and washed with sterile water to obtain a diatomite-immobilized microbial flocculant.

[0028] 20 parts by weight of diatomite, 88 parts by weight of mixed cell solution, 10 parts by weight of sodium carbonate solution, and 10 parts by weight of saturated calcium chloride solution.

[0029] In the mixed cell solution, the total mass concentration of the cells in the solution is 5%, wherein the mass ratio of Bacillus subtilis, Pse...

Embodiment 2

[0034] Diatomite with a particle size of 150 μm is washed with existing dilute sulfuric acid, and then washed with water to obtain pretreated diatomite; Mix the bacterial solution and 5% sodium carbonate solution, stir evenly, and freeze-dry to obtain the pre-fixed microbial bacteria; drop the saturated calcium chloride solution into the pre-fixed microbial bacteria, shake at a constant temperature of 50°C for 60 minutes; then let it stand After 5 hours, the particles were filtered out and washed with sterile water to obtain a diatomite-immobilized microbial flocculant.

[0035] 20 parts by weight of diatomite, 88 parts by weight of mixed cell solution, 15 parts by weight of sodium carbonate solution, and 10 parts by weight of saturated calcium chloride solution.

[0036] In the mixed cell solution, the total mass concentration of the cells in the solution was 6%, and the mass ratio of Bacillus subtilis, Pseudomonas and Arthrobacter was 1:3:1.

[0037] The test method is cons...

Embodiment 3

[0039]Diatomite with a particle size of 100 μm is washed with dilute sulfuric acid, and then washed with water to obtain pretreated diatomite; the treated diatomite is mixed with Bacillus subtilis, Pseudomonas and Arthrobacter Mix the bacterial solution and 5% sodium carbonate solution, stir evenly, and freeze-dry to obtain the pre-fixed microbial bacteria; drop the saturated calcium chloride solution into the pre-fixed microbial bacteria, shake at a constant temperature of 50°C for 70 minutes; then let it stand After 4 hours, the particles were filtered out and washed with sterile water to obtain a diatomite-immobilized microbial flocculant.

[0040] 15 parts by weight of diatomaceous earth, 80 parts by weight of mixed cell solution, 10 parts by weight of sodium carbonate solution, and 5 parts by weight of saturated calcium chloride solution.

[0041] In the mixed cell solution, the total mass concentration of the cells in the solution was 3%, and the mass ratio of Bacillus s...

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

PropertyMeasurementUnit
sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of sewage treatment, and provides a diatomaceous earth-based microbial flocculating agent for sewage treatment, and a preparation method thereof. The method comprises: pre-treating diatomaceous earth, adding a mixed bacterial solution containing Bacillus subtilis, Pseudomonas and Arthrobacter, and a sodium carbonate solution, carrying out freeze drying,adding saturated calcium chloride in a dropwise manner, oscillating, standing, filtering, and washing to prepare the diatomaceous earth immobilized microbial flocculating agent. Compared to the conventional method, the preparation method of the present invention has advantages of simple cultivation process, high yield and low preparation cost, and uses the diatomaceous earth to immobilize the microbial flocculating agent, such that the advantages of high cell density, high biological activity, strong stability, less microorganism loss, easy product separation, less remaining sludge and the like can be achieved, the good flocculation effect can be achieved in the treatment of high mineralization and high hardness wastewater, the flocculation activity is high, the consumption is low, and nosecondary pollution is generated.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and provides a diatomite-based microbial flocculant for sewage treatment and a preparation method. Background technique [0002] In today's environmental problems, the problem of water pollution is quite unavoidable, and the treatment of water pollution has become a major headache for people. In particular, the recent development of global science and technology and industrial and agricultural production has brought some unpredictable new pollutants, such as pesticides, plasticizers, detergents, etc. Therefore, sewage treatment has become an important issue that cannot be ignored in today's society. [0003] Water treatment methods include physical methods, chemical methods, and biological methods, which are of great significance to the development of industrial production, improvement of product quality, protection of the human environment, and maintenance of ecological balance. In var...

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 Applications(China)
IPC IPC(8): C02F3/34C02F1/56
CPCC02F3/34C02F1/5263C02F1/56C02F2003/001
Inventor 陈庆何方
Owner CHENDU NEW KELI CHEM SCI CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com