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

Method for treating domestic sewage by applying light ceramic suspended filler moving bed

A technology of suspended filler and lightweight ceramsite, which is applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of poor impact load resistance of biofilm and phosphorus removal effect Poor, semi-soft filler entanglement and other problems, to achieve the effect of facilitating general application and promotion, increasing biodegradability, and increasing the speed of film formation

Inactive Publication Date: 2010-10-13
SOUTH CHINA UNIV OF TECH +1
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the technology and application of MBBR: (1) the filling rate of plastic filler is relatively high, the cost is high, and the energy consumption is high; The growth of microorganisms on the plastic filler is single, the biofilm is not strong in impact load resistance, and the recovery is slow
In addition, soft and semi-soft fillers are often entangled and entangled, and their fluidity is poor; (3) The phosphorus removal effect is poor, and there are no supporting measures for phosphorus removal

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
  • Method for treating domestic sewage by applying light ceramic suspended filler moving bed
  • Method for treating domestic sewage by applying light ceramic suspended filler moving bed
  • Method for treating domestic sewage by applying light ceramic suspended filler moving bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Under the condition of water temperature of 25-29℃, the urban sewage from a certain place in the south is pumped into the hydrolytic acidification tank 1 with a filling rate of 60%. The effective volume of the hydrolytic acidification tank 1 is 6.75m 3 , the hydrolytic acidification tank 1 is built with asbestos tiles with rough surface, the filling rate is 30%, the built-in plastic semi-soft filler, the filling rate is 30%, and the residence time is 6.0h; the water supernatant from the hydrolytic acidification tank enters the suspended packing moving bed 5, ( Filler 15 is lightweight ceramsite filler, spherical in appearance, particle size 8-12mm, bulk density of ceramsite 350-400kg / m 3 , the particle density is 600~700kg / m 3 , the porosity is about 40%, the cylinder compressive strength is about 1.0Mpa, the water absorption rate is about 12% in 1h, and the specific surface area is about 3.5-4.0cm 2 / g, providing a habitat with a relatively large specific surface area...

Embodiment 2

[0034] Under the condition of water temperature of 25-29℃, the urban sewage from a certain place in the south is pumped into the hydrolytic acidification tank 1 with a filling rate of 60%. The effective volume of the hydrolytic acidification tank 1 is 6.75m 3 , the hydrolytic acidification tank 1 has built-in asbestos tiles with rough surface, the filling rate is 30%, and the built-in plastic semi-soft filler, the filling rate is 30%, and the residence time is 5.0h; the effluent supernatant of the hydrolytic acidification tank enters the suspended packing moving bed 5, ( Filler 15 is lightweight ceramsite filler, spherical in appearance, particle size 8-12mm, bulk density of ceramsite 350-400kg / m 3 , the particle density is 600~700kg / m 3 , the porosity is about 40%, the cylinder compressive strength is about 1.0Mpa, the water absorption rate is about 12% in 1h, and the specific surface area is about 3.5-4.0cm 2 / g, providing a habitat with a relatively large specific surface ...

Embodiment 3

[0037] Under the condition of water temperature of 25-29℃, the urban sewage from a certain place in the south is pumped into the hydrolytic acidification tank 1 with a filling rate of 60%. The effective volume of the hydrolytic acidification tank 1 is 6.75m 3 , the hydrolytic acidification tank 1 is built with asbestos tiles with rough surface, the filling rate is 30%, the built-in plastic semi-soft filler, the filling rate is 30%, and the residence time is 4.0h; the water supernatant from the hydrolytic acidification tank enters the suspended packing moving bed 5, ( Filler 15 is lightweight ceramsite filler, spherical in appearance, particle size 8-12mm, bulk density of ceramsite 350-400kg / m 3 , the particle density is 600~700kg / m 3 , the porosity is about 40%, the cylinder compressive strength is about 1.0Mpa, the water absorption rate is about 12% in 1h, and the specific surface area is about 3.5-4.0cm 2 / g, providing a habitat with a relatively large specific surface area...

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
Densityaaaaaaaaaa
Cylinder compressive strengthaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for treating domestic sewage by applying a light ceramic suspended filler moving bed, which comprises the following steps of: pumping low-concentration town sewage into a hydrolytic acidification tank by using a lift pump, maintaining the sewage in the hydrolytic acidification tank for 3 to 8 hours, and controlling the dissolved oxygen to 0.38-0.45mg / L; making the sewage to enter a suspended filler moving bed; under the action of aeration stirring of an aerator pipe, mixing the sewage and a suspended ceramic filler, and breeding microorganisms on the surfaces and pores of the suspended ceramsites; after film formation, forming aerobic, anoxic and anaerobic environment on the surfaces and in the pores of the suspended ceramsites, adsorbing organic matters in the sewage on the surfaces of the suspended ceramsites, and performing simultaneous nitrification-denitrification and simultaneous decarbonization-denitrification on the organic matters by the microorganisms in the biofilm; and finally, making the sewage enter a dosing and coagulating basin, adding a coagulant into the dosing and coagulating basin, fully reacting, and making the sewage enter an inclined-tube sedimentation tank for sedimentation. The method has the characteristics of short hydraulic retention time, land conservation, investment conservation and low operating cost.

Description

technical field [0001] The invention relates to low-carbon and high-ammonia-nitrogen nutritional imbalance sewage treatment, in particular to a method for treating domestic sewage with a moving bed of light ceramsite suspended filler. Background technique [0002] With the continuous economic development of small towns and the acceleration of urbanization, the growth rate of urban sewage volume and the difficulty of treatment are also increasing. Urban sewage in southern my country is low-carbon and high-ammonia-nitrogen nutrient unbalanced sewage. Generally speaking, it is low-concentration sewage, but it is easy to cause eutrophication. For many years, in my country's urban sewage treatment plants, mainly imported activated sludge process and its deformation process, SBR and its deformation process, etc., the specific treatment methods include the following types: [0003] (1) Traditional activated sludge method: This process technology is mature, the treatment effect is ...

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): C02F9/14C02F3/30C02F1/56
Inventor 胡勇有魏臻方平
Owner SOUTH CHINA UNIV OF TECH
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