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Composite dephosphorizing coagulant dedicated for drinking water

A coagulant and drinking water technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of increasing the cost of water production and reducing the AOC content below the limit value and other issues to achieve significant social and economic benefits

Inactive Publication Date: 2006-10-11
北京精密单因子水工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to make drinking water biologically stable, activated carbon adsorption and biological pretreatment of water are required, and large water treatment structures need to be added, which significantly increases the cost of water production
In addition, when the raw water is seriously polluted and the content of organic matter in the water is high, even if biological pretreatment and activated carbon adsorption are used, it is generally difficult to reduce the AOC content below the limit value.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Taking the polluted river water in a city in North China as the water source, the total number of bacteria in the raw water was 2×10 3 individual / mL, total coliform bacteria 1.4×10 5 Individual / L, total phosphorus (NP) 80ug / L, bioavailable phosphorus (MAP) 17ug / L, turbidity 12NTU. In the experiment, 1.0L of water sample was taken, and 5mg / L of special compound phosphorus removal coagulant was added under rapid stirring (see attached table 1 for component configuration). After mixing, reaction and precipitation, it was filtered through filter paper, and the water sample was taken For testing, the turbidity is 0.2NTU, NP 0.5ug / L, MAP 0.0ug / L, the total number of bacteria is 556 / mL, and the total E. coli is 180 / L. The total number is 8 / mL, and the total coliform group is 0 / L. Take the sterilized dephosphorization water and place it in a sterile container for 72 hours, then take a water sample to detect the total number of bacteria and total E. coli. The results showed th...

Embodiment 2

[0016] Taking the polluted river water in a city in North China as the water source, the total number of bacteria in the raw water was 2×10 3 individual / mL, total coliform bacteria 1.4×10 5 Individual / L, total phosphorus (NP) 80ug / L, bioavailable phosphorus (MAP) 17ug / L, turbidity 12NTU. In the experiment, 1.0L of water sample was taken, and 6mg / L special compound dephosphorization coagulant was added under rapid stirring (see attached table 1 for component configuration). After mixing, reaction and precipitation, the water sample was filtered through filter paper. For testing, the turbidity is 0.0NTU, NP 0.0ug / L, MAP 0.0ug / L, the total number of bacteria is 476 / mL, and the total E. coli is 136 / L. The total number is 0 / mL, and the total coliform group is 0 / L. Take the sterilized dephosphorization water and place it in a sterile container for 72 hours, then take a water sample to detect the total number of bacteria and total E. coli. The results showed that the total Escheric...

Embodiment 3

[0018] Using a heavily polluted river in a city in Northeast China as the water source, the total number of bacteria in the raw water was 7×10 4 individual / mL, total coliform bacteria 5.4×10 7 Individual / L, total phosphorus (NP) 140ug / L, bioavailable phosphorus (MAP) 35ug / L, turbidity 15NTU. In the experiment, 1.0L of water sample was taken, and 8mg / L special compound phosphorus removal coagulant was added under rapid stirring (see attached table 1 for component configuration). After mixing, reaction and precipitation, it was filtered through filter paper, and the water sample was taken For testing, the turbidity is 1.0NTU, NP0.0ug / L, MAP0.0ug / L, the total number of bacteria is 510 / mL, and the total Escherichia coli is 54 / L. The total number is 29 / mL, and the total coliform group is 0 / L. Take the sterilized dephosphorization water and place it in a sterile container for 72 hours, then take a water sample to detect the total number of bacteria and total E. coli. The results s...

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PUM

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Abstract

The invention provides a special-purpose composite dephosphorizing coagulating agent for drinking water, which comprises the following constituents: potassium permanganate 20-30%, ferrous sulfate 5-10%, ferric chloride 20-30%, manganese sulfate 5-10%, polyacrylamide 1-2%, calcium carbonate 1-3%, polymeric aluminum chloride 10-20%, sodium hypochlorite 5-10%, sodium silicate 2-4%, activated aluminum oxide 5-10%, the ratio being weigh percent.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a technology for controlling biological stability of drinking water. Background technique [0002] With the rapid development of my country's social economy and the improvement of people's living standards, people have higher and higher requirements for drinking water hygiene and safety. Especially in my country, the water environment is seriously polluted, and the hygiene and safety of drinking water has attracted more and more attention from the society. [0003] The microbiological safety of drinking water is the primary problem of drinking water hygiene and safety. The microbiological safety of drinking water is not high, which will lead to the outbreak of water-borne infectious diseases and pose a great threat to people's life and health. The main method of ensuring the microbiological safety of drinking water is to disinfect the water. However, in recent...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/58
Inventor 李星杨艳玲王淑莹李圭白
Owner 北京精密单因子水工程技术有限公司
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