Continuous flow aerobe fluidized bed process

An aerobic biological and fluidized bed technology, which is applied in the field of industrial wastewater treatment, can solve the problems of insignificant denitrification and organic matter degradation effect, high capital construction cost and operating cost, troublesome operation and management, etc., and achieve good denitrification and phosphorus removal effect. , The operation effect is stable, the effect of reducing the floor space

Inactive Publication Date: 2012-12-26
LANZHOU UNIVERSITY OF TECHNOLOGY
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These processes have been partially applied in the actual operation process and have achieved certain results, but there are still some problems, such as large tank volume, high infrastructure and operating costs, ineffective denitrification and organic matter degradation, troublesome operation

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
  • Continuous flow aerobe fluidized bed process
  • Continuous flow aerobe fluidized bed process
  • Continuous flow aerobe fluidized bed process

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Examples 1, 2, 3, 4, 5, and 6: all use artificial simulated wastewater for further description.

Example 1:

The temperature of artificially simulated wastewater in the water distribution bucket is 18~23℃, the PH value is 6.0~6.5, the water flow rate is 17.1mL / min, the rising gas velocity is controlled at 100~120L / h, COD cr The content is 889.44mg / L, NH 3 -N content is 110.73mg / L, TP content is 6.51mg / L, artificial simulated wastewater is pumped into the reactor through Langer peristaltic pump, and the hydraulic retention time is 0.49d -1 When the effluent COD cr , NH 3 The concentrations of -N and TP are 140.35mg / L, 2.60mg / L, 0.60mg / L, and the removal rates are 84.22%, 97.65%, and 90.78% respectively. The sewage removal effect is good; the sludge amount MLSS reaches 634mg / L , MLVSS reaches 90mg / L; Settling performance of sludge SV 30 It is 8%, the SVI value reaches 124.42mL / g, and the sludge volume and sedimentation performance are good.

Example Embodiment

Example 2:

The temperature of artificially simulated wastewater in the water distribution bucket is 18~23℃, the PH value is 6.0~6.5, the water flow rate is 17.1mL / min, the rising gas velocity is controlled at 100~120L / h, COD cr The content is 1262.86mg / L, NH 3 -N content is 116.90mg / L, TP content is 7.33mg / L, artificial simulated wastewater is sucked into the reactor through Langer peristaltic pump, and the hydraulic retention time is 0.49d -1 , COD in the effluent cr , NH 3 The concentrations of -N and TP are 173.40mg / L, 11.81mg / L, 0.98mg / L, and the removal rates are 86.27%, 89.90%, 86.63%, respectively. The sewage removal effect is good; the sludge amount MLSS reaches 394mg / L , MLVSS reaches 50mg / L; Settling performance of sludge SV 30 It is 5%, the SVI value reaches 139.59mL / g, and the sludge volume and sedimentation performance are good.

Example Embodiment

Example 3:

The temperature of artificially simulated wastewater in the water distribution bucket is 18~23℃, the PH value is 6.0~6.5, the water flow rate is 17.1mL / min, the rising gas velocity is controlled at 100~120L / h, COD cr The content is 1262.86mg / L, NH 3 -N content is 116.90mg / L, TP content is 7.33mg / L, artificial simulated wastewater is sucked into the reactor through Langer peristaltic pump, and the hydraulic retention time is 0.49d -1 , COD in the effluent cr , NH 3 The concentrations of -N and TP are 173.40mg / L, 11.81mg / L, 0.98mg / L, and the removal rates are 86.27%, 89.90%, 86.63%, respectively. The sewage removal effect is good; the sludge amount MLSS reaches 394mg / L , MLVSS reaches 50mg / L; Settling performance of sludge SV 30 It is 5%, the SVI value reaches 139.59mL / g, and the sludge volume and sedimentation performance are 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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a continuous flow aerobe fluidized bed process, which comprises the following steps of: wastewater is stored in a water inlet groove, and is pumped into the bottom of a reactor through a constant flow pump so as to enter a main reactor; the wastewater is filled into the reactor through aeration of an aeration head at the bottom of an air lift pipe in the reactor; sludge is driven to upwards move in the air lift pipe by the airflow, and is subjected to a downward sedimentation movement in a sludge-water separation region at the upper part of the reactor until the sludge enters into the air lift pipe at the main reaction region at the bottom of the reactor again; the wastewater is full of the reactor, and the sludge with the poor sedimentation property is discharged to a water discharge groove at an effluent weir at the upper part of the reactor along with effluent; the main reaction region of the reactor is fully aerated and is in an aerobic condition, and the wastewater is subjected to nitration reactor; when DO (dissolved oxygen) in the sludge-water separation region of the reactor is relatively insufficient and is in an anaerobic condition, the wastewater is subjected to denitrification reaction, and the effect of denitriding is finally realized; phosphorus can be fully absorbed by polyphosphate accumulation bacteria in the sludge-water separation region of the reactor is relatively insufficient and is in an anaerobic condition under the anaerobic condition and the aerobic condition, the last part of the sludge is discharged along with the effluent, and most of sludge continues to react.

Description

technical field [0001] The invention belongs to waste water treatment technology, in particular to a method for treating industrial waste water with high nitrogen and phosphorus content. Background technique The existing wastewater treatment methods are mainly composed of aerobic, anaerobic and biofilm methods, and in the aerobic method, the activated sludge method and its various evolution processes are the main ones, usually including a. traditional push flow, b. Stage aeration method, c. high load aeration method, d. delayed aeration method, e. adsorption regeneration method, f. complete mixing method, g. deep well aeration method, h. pure oxygen aeration method, i. Kraus method, j.AB method, k.SBR method, l. oxidation ditch, m. circulating activated sludge process, etc. These processes have been partially applied in the actual operation process and have achieved certain results, but there are still some problems, such as large tank volume, high infrastructure and oper...

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): C02F3/30
Inventor 赵霞冯辉霞王晓春雒和明张建强姜峰赵阳雨孔秀琴张庆芳
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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