Method for treating sewage by using biological membrane and equipment thereof

A biofilm and biofilm carrier technology, applied in the field of water treatment, can solve the problems of difficult treatment, unfavorable large-area water application, high operation and management costs, low oxygen supply cost, low operation and preparation cost, and continuous purification effect. effective effect

Inactive Publication Date: 2010-09-22
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing river biofilm in-situ treatment technology is mainly based on the contact oxidation process in sewage treatment. The biofilm and the carrier are completely submerged underwater. Due to the restriction of low dissolved oxygen in water, an anaerobic state appears

Method used

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  • Method for treating sewage by using biological membrane and equipment thereof
  • Method for treating sewage by using biological membrane and equipment thereof
  • Method for treating sewage by using biological membrane and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] Cut a 20cm-wide microfiber fabric into a 15cm-long cloth block, and evenly paste zeolite particles with a particle size of about 1cm on both sides to construct a suspended biofilm mass transfer and carrier unit; use angle steel to construct a length, width and height of 30cm respectively. , 25cm, 50cm rectangular frame; the frame is set around the plastic box (length, width and height: 25cm, 20cm, 40cm) filled with domestic sewage, and the hanging biofilm unit first uses traditional methods to aerate and hang the film in the domestic sewage, and the film is successfully hung. Afterwards, the upper end of the cloth block of each unit is fixed with iron wire and hung on the frame, and the lower end of the cloth block is immersed in the water in the plastic box 5cm. A total of 15 units are set up to hang evenly above the sewage, and the interval between units is about 1-2cm. The domestic sewage in the plastic box is subjected to sequencing batch treatmen...

Example Embodiment

[0027] Example 2

[0028] Cut the microfiber fabric and non-woven fabric with a width of 20cm into 15cm-long cloth pieces respectively, stick sand particles with a particle size of about 1cm on both sides of the non-woven fabric, and wrap the two pieces of ultra-fine fiber fabric into the non-woven fabric. And sutured together with thread to build a suspended biofilm mass transfer and carrier unit; use angle steel to build a rectangular frame with a length, width and height of 30cm, 25cm, and 50cm respectively; the frame is set in a plastic box (length, width and height: 25cm, 20cm, 40cm) around, hang the biofilm unit first in the domestic sewage by aeration and hanging the film. After the film is successfully hung, the upper end of each unit cloth block is fixed with iron wire, suspended on the frame, and the bottom 5cm of the cloth block is immersed in a plastic box. A total of 15 units are set up to hang evenly above the sewage, and the interval between units is about 1-2cm...

Example Embodiment

[0029] Example 3

[0030] Cut a 20cm-wide microfiber fabric into a 15cm-long piece of cloth. After roughening the surface of the semi-rigid plastic sheet, cut it into the same size. Wrap the two pieces of microfiber fabric around the plastic sheet and sew them together. , build a suspended biofilm mass transfer and carrier unit; use angle steel to build a rectangular frame with length, width and height of 30cm, 25cm, and 50cm; the frame is set around the plastic box (length, width and height: 25cm, 20cm, 40cm) filled with domestic sewage, The hanging biofilm unit is first aerated and hung in the domestic sewage by traditional methods. After the film is successfully hung, the upper end of each unit cloth block is fixed with iron wire, suspended on the frame, and the bottom 5cm of the cloth block is immersed in the water in the plastic box. 15 units are evenly suspended above the sewage, and the interval between the units is about 1-2cm. The domestic sewage in the plastic box is...

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Abstract

The invention belongs to the field of water treatment, and relates to a method for treating sewage by using a biological membrane and equipment thereof. In the method, a biological membrane carrier is adopted and floats on the water, and a material having capillary water absorption function is used as a medium for connecting the biological membrane carrier and a water body environment under the water. The pre-cultured mature biological membrane can be suspended above the water, and microbial strains can be transferred to the carrier to perform culture and enrichment by using the medium with strong capillary water absorption effect. Therefore, the formed biological membrane is directly contacted with the air, so the transfer speed of oxygen is high, soluble pollutants in the water are continuously transferred, and the technique of suspending the capillary mass-transfer biological membrane can fully meet the aerobic biodegradation of the high-concentration pollutants and belongs to a technique of naturally strengthening the aerated biological membrane. The method for treating the sewage by using the biological membrane has the advantages of high organic load, low oxygen supply cost, easy construction and management, flexible application and the like; and the method can be applied to in-situ treatment of polluted rivers, and can effectively and constantly perform sewage purification.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a method and equipment for treating sewage by using biofilm. Background technique [0002] With the rapid development of the economy, the development of urban infrastructure cannot keep up with the increase in population, and a large amount of domestic sewage is directly discharged into nearby water bodies without treatment. Many urban rivers receive a large amount of sewage, which far exceeds their self-purification capacity. Severe organic pollution leads to rapid consumption of dissolved oxygen in the water. city ​​development. It has become an urgent need to develop an effective treatment technology to control pollution and restore the damaged river ecosystem. [0003] In recent years, biofilm technology has been widely studied and adopted as a technology for controlling water pollution. Because biofilm technology can fix and enrich a large number of microorganis...

Claims

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Application Information

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IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 种云霄张珺蓉黄新颖吕丹
Owner SOUTH CHINA AGRI UNIV
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