Treatment method for dephosphorizing and denitrifying sewage

A treatment method and technology for sewage, applied in water/sewage treatment, biological water/sewage treatment, neutralized water/sewage treatment, etc., can solve the problems of difficult separation of solid and liquid, high cost, low treatment cost, etc., and achieve adsorption effect The effect of improving and reducing processing costs and reducing dosage

Active Publication Date: 2016-08-17
HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
View PDF13 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated carbon is widely used as an important adsorbent material because of its rich pore structure and huge specific surface area, good chemical stability and strong adsorption capacity, but its cost is high
There are also non-metallic ionic minerals such as attapulgite for adsorption, but natural non-metallic minerals have the following limitations as adsorbents: natural non-metallic minerals have high density and limited specific surface area, and the surface of natural non-metallic minerals is mostly negatively charged. And directly using natural non-metallic powder ore such as clay minerals as the adsorbent will have the problem of difficult separation of solid and liquid after adsorption
From the point of view of the principle of nitrogen and phosphorus removal, some chemical and physical methods can effectively remove nitrogen and phosphorus in sewage, but in general, these two methods are not completely removed, and the biological treatment of nitrogen and phosphorus removal It has the advantages of simultaneously removing C, N, P and low processing cost
Traditional wastewater treatment methods using activated sludge to cultivate domesticated microorganisms can no longer effectively remove these pollutants. These substances have accumulated in the environment for a long time, causing great pollution to the ecological environment on which we live, and affecting human physical and mental health. bring great harm
A considerable number of industrial polluting enterprises in our country would rather be punished than invest in wastewater treatment. Even if there is a sewage treatment plant, the operation is extremely abnormal.

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

[0036] A treatment method for dephosphorization and denitrification of sewage, characterized in that it comprises the following steps:

[0037] (1) After the industrial wastewater passes through the grid, it enters the grit chamber, and the sewage separated from sand and water enters the primary sedimentation tank, and passes through the primary sedimentation tank. Facilitate the buoyancy of oil in wastewater , to reduce the content of suspended solids;

[0038] (2) Preparation of physical adsorbent

[0039] Mix according to the mass ratio of forsterite powder, shell powder, perlite powder, and pore-forming agent at a mass ratio of 4:1:2:3, stir evenly, place in a granulator, and add 22-25% (weight) of the mixture of water, granulated to obtain particles with a particle size of 3-5mm spherical Green body; drying at 100°C for 20 hours, and calcining at 1100°C for 1 hour to obtain a physical adsorbent.

[0040] (3) The wastewater treated by the primary sedimentation tank ent...

Embodiment 2

[0057] A treatment method for dephosphorization and denitrification of sewage, characterized in that it comprises the following steps:

[0058] (1) After the industrial wastewater passes through the grid, it enters the grit chamber, and the sewage separated from sand and water enters the primary sedimentation tank, and passes through the primary sedimentation tank. Facilitate the buoyancy of oil in wastewater , to reduce the content of suspended solids;

[0059] (2) Preparation of physical adsorbent

[0060] Mix according to the mass ratio of forsterite powder, shell powder, perlite powder, and pore-forming agent at a mass ratio of 4:1:2:3, stir evenly, place in a granulator, and add 22-25% (weight) of the mixture of water, granulated to obtain particles with a particle size of 3-5mm spherical Green body; drying at 100°C for 20 hours, and calcining at 1100°C for 1 hour to obtain a physical adsorbent.

[0061] (3) The wastewater treated by the primary sedimentation tank ent...

Embodiment 3

[0076] Embodiment 3 Treatment example of waste water effect

[0077] The factory sewage is entered into the sewage treatment system according to the method of embodiment 1-2 respectively, and the bottom material of the kettle is sampled and measured for COD, phosphorus, and ammonia nitrogen data;

[0078] Compared with Example 1, control group 1 does not add physical adsorbent; compared with Example 1, control group 2 does not add composite microbial preparation. Sampling and determination of COD, ammonia nitrogen, SS, and clarity test data are shown in Table 1:

[0079] Table 1

[0080] COD removal rate Ammonia nitrogen removal rate Phosphorus removal rate Phosphorus content in effluent Clarity control group 1 43.2% 47.8% 50.3% >0.5mg / L 10cm control group 2 47.7% 61.5% 63.8% >0.5mg / L 9cm Example 1 group 98.9% 99.1% 99.4% 26cm Example 2 group 99.1% 99.3% 99.5% 26cm

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
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a treatment method for dephosphorizing and denitrifying sewage. The method is characterized by carrying out treatment by combining a physical method and a biological agent, wherein the biological agent comprises the following raw materials in parts by weight: 5-7 parts of paracoccus denitrificans, 5-7 parts of saccharomyces cerevisiae, 4-5 parts of rhodococcus, 4-5 parts of bacillus amyloliquefaciens, 3-4 parts of clostridium papyrosolvens, 3-4 parts of penicillium ochrochloron, 2-3 parts of pseudomonas and 1-2 parts of bacillus cereus. The biological agent contains various microorganisms with excellent capacity of degrading refractory pollutants, is reasonable in compatibility of the strains, has good degrading effects and has a broad application prospect.

Description

technical field [0001] The invention relates to a treatment method for waste water, and specifically provides a treatment method for dephosphorization and denitrification of sewage. Background technique [0002] With the increasing urban population and the continuous development of industry and agriculture, water pollution accidents occur frequently, seriously endangering the health and even life of people and animals. For a long time, the purpose of sewage treatment has focused on the removal of organic matter and suspended solids. With the increase of sewage discharge, especially the widespread use of chemical fertilizers, pesticides, and synthetic detergents, the nitrogen and phosphorus nutrients in sewage have caused environmental pollution. The impact has gradually attracted people's attention. The most prominent impact of the discharge of nitrogen and phosphorus plant trophic pollutants on the water environment is the eutrophication of the water body, which is manifes...

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): C02F9/14C02F101/10C02F101/16
CPCC02F1/001C02F1/281C02F1/56C02F1/66C02F3/348C02F9/00C02F2001/007C02F2101/105C02F2101/16C02F2209/08C02F2209/10C02F2209/14
Inventor 董力青侯新明王健杨雪
Owner HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap