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

Integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process

A bioaugmentation and diatomite technology, applied in the field of drinking water treatment, can solve the problems of insufficient removal capacity of organic matter and ammonia nitrogen, high pollutant content, etc., and achieve the effect of long stable operation time, low investment cost and high degree of automation control

Active Publication Date: 2012-07-18
TONGJI UNIV
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem facing drinking water treatment is the high content of organic matter, ammonia nitrogen and other pollutants in the raw water, and the treatment of conventional processes (coagulation, sedimentation or clarification, filtration and disinfection) is relatively insufficient in removing organic matter and ammonia nitrogen.

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
  • Integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process
  • Integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The powder sintered diatomite used in the implementation process has a particle size of 10-35 microns, an average pore size of about 0.2-0.4 microns, and an average BET specific surface area of ​​about 0.3261m 2 / g. A flat-plate dynamic membrane support module is used to filter the water. The surface raw water was taken from a surface river in Shanghai, and the bio-augmented sintered diatomite was cultivated by the microbial autogenous culture method.

[0034] (1) Bioenhanced sintered diatomite autogenous culture

[0035] 1) Diatomaceous earth dosing method

[0036] On the first day when the reaction device is started, sintered diatomite is added to the device at one time, so that the concentration of the powdered sintered diatomite mixture in the water purification tank 1 reaches 10000mg / L, and then the powdered sintered diatomite is continuously added to the reaction device every day. Soil, so that the powder sintered diatomite content in the reaction device reache...

Embodiment 2

[0052] The powder sintered diatomite used in the implementation process has a particle size of 10-35 microns, an average pore size of about 0.2-0.4 microns, and an average BET specific surface area of ​​about 0.3261m 2 / g. The tubular dynamic membrane support module is used to filter the effluent. The surface raw water was taken from a surface river in Shanghai, and the biosintered diatomite was cultivated by the microbial autogenous culture method.

[0053] (1) Bioenhanced sintered diatomite autogenous culture

[0054] 1) Diatomaceous earth dosing method:

[0055] On the first day when the reaction device is started, sintered diatomite is added to the device at one time, so that the concentration of the powdered sintered diatomite mixture in the water purification tank 1 reaches 10000mg / L, and then the powdered sintered diatomite is continuously added to the reaction device every day. Soil, so that the powder sintered diatomite content in the reaction device reaches 15000m...

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
Average pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides an integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process and the mixed solution solid-liquid separation effluent-discharging process is completed by a dynamic membrane component driven by the gravity. The raw water on the earth's surface is pumped in a bioaugmenting burned diatomite dynamic membrane device, the bioaugmenting burned diatomite mixed solution in the device is utilized to perform biodegradation to pollutants and remove the pollutants; bioaugmenting burned diatomite forms a dynamic membrane on the dynamic membrane component, and the solid-liquid filtering separation of the mixed solution is performed under the driving of the fixed gravity waterhead between the inner liquid level of the reaction device and the water outlet liquid level. The process provided by the invention is simple, the purification of the raw water on the earth's surface can be realized in one reaction device; the high water permeability of burned diatomite is utilized, the dynamic membrane gravity flow filtering and effluent discharging can be realized under 0.2-0.7m of low fixed gravity waterhead, the power equipment is not required, the operation process is greatly simplified, the effluent quality is good; and the filtering flux of the diatomite dynamic membrane is 100L / m<2>h-300L / m<2>h, the continuous operation time is above 60h-270h and the effluent turbidity is stably below 0.3NTU. The process can be widely used in normal rural water supply or emergency rural water supply in the lack of electricity which is caused by natural disasters and unexpected events.

Description

technical field [0001] The invention relates to an integrated bio-enhanced sintered diatomite dynamic membrane self-flowing water purification process for drinking water, which can realize the dynamic membrane self-flowing water under the action of gravity, without the action of power equipment, and has excellent water quality. It belongs to the new membrane separation technology in the field of drinking water treatment. technology. Background technique [0002] In recent years, the pollution of my country's surface water quality has become increasingly serious. The main problem facing drinking water treatment is the high content of organic matter, ammonia nitrogen and other pollutants in raw water, and the conventional treatment (coagulation, sedimentation or clarification, filtration and disinfection) is relatively insufficient in removing organic matter and ammonia nitrogen. By adding microbial carrier fillers to strengthen the growth of microorganisms on the surface, th...

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): C02F3/02C02F3/10
CPCY02W10/10
Inventor 张亚雷褚华强周雪飞张海董秉直
Owner TONGJI UNIV