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

Biological purifying process of seriously polluted river water

A biological purification and heavy pollution technology, applied in the direction of aerobic process treatment, sustainable biological treatment, oxidized water/sewage treatment, etc., can solve the problems of complex process flow, large floor area, high investment and operation costs, and achieve engineering Low investment, low operating cost, and good water quality

Inactive Publication Date: 2007-07-25
ANHUI UNIVERSITY OF TECHNOLOGY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these processes all have disadvantages such as complicated process flow, high investment and operating costs, and large floor area. At the same time, the treatment objects are limited to slightly polluted raw water, and they are powerless to treat heavily polluted river water.

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
  • Biological purifying process of seriously polluted river water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Plane size is R=8000mm, height H 0 = 6500mm circular biological aerated filter, filled with ceramsite filter material with a height of H = 4000mm, the height of the water distribution chamber h 1 =1000mm, supporting layer height h 2 =300mm, height of clear water area h 3 = 800mm, super high h 4 =400mm, when the sludge load is 0.35kgCOD Mn / (kgMLSS·d), filtration speed 2.5m 3 / (h·m 2 ), chlorine dioxide dosage 1.6g / m 3 , when the air-water ratio is 5:1, the 3000m 3 The turbidity of heavily polluted river water per d dropped from 113.0FTU to 4.0FTU, COD Mn From 65.4mg / L to 3.9mg / L, ammonia nitrogen from 2.4mg / L to 0.16mg / L, the number of bacteria from 1.6×10 4 down to 1.0×10 2 indivual. Table 1 shows several examples of using this process to treat heavily polluted river water.

[0017] Table 1 Example of the effect of using biological purification method to treat heavily polluted river water

[0018] Reality

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
specific surface areaaaaaaaaaaa
porosityaaaaaaaaaa
Login to View More

Abstract

The biological purifying process of seriously polluted river water is one two-stage process including the first stage of treating in aeration biological filtering tank and the second stage of oxidizing and sterilizing with chlorine dioxide. The seriously polluted river water pumped from the regulating deposition tank into the aeration biological filtering tank is first filtered in the filtering material layer and aerated with Roots blower in the filtering material layer, then made to enter the oxidizing and sterilizing tank via the reverse flushing water pond, and finally oxidized and sterilized in the oxidizing and sterilizing tank with ClO2 generated with the ClO2 generator to reach common industrial water standard. The present invention makes it possible to utilize seriously polluted river water in industrial production, with the sludge produced during treatment being excellent ecological fertilizer.

Description

1. Technical field: [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a biological purification process for heavily polluted river water. 2. Background technology: [0002] Most of the rivers in the suburbs of some cities in our country or flowing into the urban area are seriously polluted, and basically lose the environmental function and use function of water. On the other hand, the city is seriously short of water. How to directly treat these heavily polluted river water, make it resource and use it It will be an important research topic that water treatment workers will strive to solve for industrial production and to open up new water sources for the industrial development of my country's water-deficient cities (especially northern cities). Conventional water supply treatment process, that is, coagulation→clarification→filtration→disinfection process removes mainly suspended solids, colloidal impurities and bacteria in ...

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 Patents(China)
IPC IPC(8): C02F9/02C02F9/04C02F9/14C02F3/02C02F1/50C02F1/76
CPCY02W10/10
Inventor 张文艺郑明东蔡建安
Owner ANHUI UNIVERSITY OF TECHNOLOGY