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Ozone treatment process for advanced sewage treatment

A technology of advanced treatment and ozone treatment, applied in water/sewage treatment, oxidized water/sewage treatment, multi-stage water/sewage treatment, etc., to achieve the effect of improving removal rate, improving utilization rate and reducing operating cost

Inactive Publication Date: 2020-11-13
苏州金渠环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an ozone treatment process for the advanced treatment of sewage, aiming to solve the problems existing in the prior art

Method used

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  • Ozone treatment process for advanced sewage treatment

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Embodiment 1

[0023] see figure 1 , the present embodiment provides a technical solution: an ozone treatment process for advanced sewage treatment, comprising the following steps:

[0024] S1. Pass the sewage through the grid to filter impurities and then enter the sedimentation tank. The width of the filter holes of the grid is 10mm. Before the sewage is input into the sedimentation tank, the pH value of the sewage is adjusted to 5-6. There are multiple sedimentation tanks, which are divided into two groups and used at the same time. Before sludge removal is required, stop using one of the sedimentation tanks and carry out sludge removal for this group of sedimentation tanks. This group of sedimentation tanks After the sludge transportation operation is completed, use this group of sedimentation tanks to store sewage, and stop the use of the other group of sedimentation tanks, and then carry out sludge removal for the other group of sedimentation tanks. After the removal is completed, us...

Embodiment 2

[0033] This embodiment provides a technical solution: an ozone treatment process for advanced sewage treatment, comprising the following steps:

[0034] S1. Pass the sewage through the grid to filter impurities and then enter the sedimentation tank. The width of the filter holes of the grid is 10mm. Before the sewage is input into the sedimentation tank, the pH value of the sewage is adjusted to 5-6. There are multiple sedimentation tanks, which are divided into two groups and used at the same time. Before sludge removal is required, stop using one of the sedimentation tanks and carry out sludge removal for this group of sedimentation tanks. This group of sedimentation tanks After the sludge transportation operation is completed, use this group of sedimentation tanks to store sewage, and stop the use of the other group of sedimentation tanks, and then carry out sludge removal for the other group of sedimentation tanks. After the removal is completed, use two sets of sedimenta...

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Abstract

The invention is applicable to the technical field of sewage treatment. The invention provides an ozone treatment process for advanced sewage treatment. The process comprises the following steps: sequentially filtering impurities in sewage through a grid, inputting the sewage into a sedimentation tank, precipitating the sewage in the sedimentation tank, inputting the precipitated supernatant intoan ozone oxidation tower, introducing ozone into the ozone oxidation tower at least twice for oxidation at least twice, inputting the sewage subjected to ozone oxidation into a flocculation tank, adding a flocculant into the flocculation tank, stirring for flocculation, inputting the sewage in the flocculation tank into a disinfection tank, introducing chlorine into the disinfection tank for disinfection, and finally, outputting the sewage subjected to disinfection as domestic water. The removal rate of COD (Chemical Oxygen Demand) is increased by inputting the ozone for multiple times, the utilization rate of the ozone is increased, and the operation cost is also reduced. An ozone adding device is used for increasing the contact surface of the ozone and water, increasing the utilization rate of the ozone, shortening the ozone oxidation time, reducing the tank volume of the reaction tank and fully utilizing the ozone.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an ozone treatment process for advanced treatment of sewage. Background technique [0002] Municipal sewage includes domestic sewage, industrial wastewater and runoff sewage within urban areas. Domestic sewage is mainly the discharge water produced by various kitchen water, washing water and toilet water used in human life, and most of them are non-toxic inorganic salts. Domestic sewage also contains a large amount of organic matter, such as cellulose, starch, sugar and fatty protein; it also often contains pathogenic bacteria, viruses and parasite eggs; chloride, sulfate, phosphate, bicarbonate and sodium of inorganic salts , potassium, calcium, magnesium, etc. The general feature is that it contains high nitrogen and phosphorus content, and under the action of anaerobic bacteria, it is easy to generate odorous substances. [0003] At present, most cities...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/001C02F1/52C02F1/78C02F1/5281C02F1/50C02F1/763C02F2301/08C02F2209/08C02F2303/14
Inventor 程润魏星光何家华肖俊伟
Owner 苏州金渠环保科技有限公司