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A high-efficiency, high-turbidity, high-oxygen-consumption drinking water pretreatment agent and drinking water pretreatment process

A drinking water and pretreatment technology, applied in the field of water treatment, can solve problems such as difficult to achieve, and achieve the effect of safe use and easy operation and management

Active Publication Date: 2021-05-25
重庆翘柏环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In view of this, the purpose of the present invention is to provide a drinking water pretreatment agent and a drinking water pretreatment process, through the enhanced oxidation and enhanced coagulation to treat water samples with high turbidity and high oxygen consumption, which overcomes the traditional process Deal with problems or deficiencies that are difficult to meet the national drinking water standard of GB5749-2006

Method used

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  • A high-efficiency, high-turbidity, high-oxygen-consumption drinking water pretreatment agent and drinking water pretreatment process
  • A high-efficiency, high-turbidity, high-oxygen-consumption drinking water pretreatment agent and drinking water pretreatment process
  • A high-efficiency, high-turbidity, high-oxygen-consumption drinking water pretreatment agent and drinking water pretreatment process

Examples

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Embodiment 1

[0037] Mix 5g of potassium permanganate, 2.5g of sodium dihydrogen phosphate, 1g of calcium chloride, 0.62g of sodium sulfite, 0.53g of sodium bisulfite, and 0.35g of polyacrylamide to obtain a compound salt of potassium permanganate. It is formulated into 0.1% potassium permanganate compound salt solution;

[0038]Take a series of parallel raw water samples and place them in a 1000mL beaker. Among them, the oxygen consumption of the raw water is 6.84mg / L, and the turbidity is 27.5NTU. Add 4mg / L compound salt agent to it for pretreatment, and use a six-way mixer Stir at 300r / min for 10min, add different amounts of carbon black into it, continue to stir at 300r / min for 10min, then add 40mg / L polyaluminum chloride at 300r / min, 150r / min, 60r Stir for 1min, 8min, and 4min at a speed of 1 / min; let the pretreated liquid stand for 10min and then filter, measure its oxygen consumption and turbidity, and calculate its removal rate. Oxygen consumption measurement see figure 1 , for tu...

Embodiment 2

[0041] 6g potassium permanganate, 1.02g sodium dihydrogen phosphate, 0.85g sodium hypochlorite, 0.45g calcium chloride, 0.59g sodium sulfite, 0.43g sodium bisulfite, 0.22g polydimethyl-diallyl-ammonium chloride , 0.38g of polyacrylamide mixed evenly, can obtain potassium permanganate compound salt medicament, then it is formulated into 0.1% potassium permanganate compound salt solution;

[0042] Take a series of parallel raw water samples and place them in a 1000mL beaker. Among them, the oxygen consumption of the raw water is 7.12mg / L, and the turbidity is 32.6NTU. Stir at 300r / min for 10min, add 20mg / L carbon black into it, continue to stir at 300r / min for 10min, then add 40mg / L polyaluminum chloride at 300r / min, 150r / min, 60r / min Stir for 1 min, 8 min, and 4 min at 1 min speed; let the pretreated liquid stand for 10 min before filtering, measure its oxygen consumption and turbidity, and calculate its removal rate. Oxygen consumption measurement see image 3 , for turbidit...

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Abstract

The invention discloses a high-efficiency, high-turbidity, high-oxygen-consumption drinking water pretreatment agent and a water treatment process. The drinking water pretreatment agent is a potassium permanganate compound salt agent, and its component mass percentage is: permanganate 40-75% potassium, 15-30% complexing agent, 5-20% inducer, 1-10% coagulant aid; the water treatment process includes the following steps: adding potassium permanganate compound salt to the raw water, Stir and oxidize for 5-10 minutes before adding carbon black, continue stirring and oxidizing for 5-20 minutes before adding coagulant, and then carry out sedimentation and filtration to obtain the treated water sample. Through this pretreatment process, the raw water with high turbidity and high oxygen consumption can be easily treated, so that the oxygen consumption and turbidity can reach the national standard; there is no need to build large-scale water treatment structures, and it can be combined with the current domestic traditional process, which is economical Effective, easy to operate and manage and realize automatic control; also has the characteristics of safe and efficient use, and will not produce harmful by-products to the human body.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a drinking water pretreatment agent and a water treatment process, especially when the raw water has high turbidity and high oxygen consumption. Background technique [0002] The World Health Organization (WHO) survey shows that: 80% of the world's diseases are related to water; 50% of child deaths are caused by drinking water problems, and drinking water safety problems have gradually become one of the main causes of disease in the world. There are more than 50 kinds of diseases such as digestive tract diseases, infectious diseases, stones, skin diseases, cancer, and gynecological inflammations. [0003] According to statistics, more than 95% of my country's current waterworks still use traditional water treatment technology, that is, process rivers, lakes, reservoirs or groundwater into potable water through "coagulation-sedimentation-filtration-disinfection" and other treatment ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00C02F1/72C02F1/52C02F1/56C02F9/04C02F101/30
CPCC02F1/00C02F1/283C02F1/5236C02F1/5245C02F1/5263C02F1/56C02F1/72C02F9/00C02F2101/30C02F2209/11
Inventor 李守昌张友和史群妮潘其玲
Owner 重庆翘柏环境科技有限公司