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Sewage treatment system and water treatment process thereof

A sewage treatment system and sewage technology, applied in water/sewage treatment, water/sewage multi-stage treatment, biological water/sewage treatment, etc. Removal rate, improved purification effect, better effluent quality

Pending Publication Date: 2020-08-07
江西康乾环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people. The process of entering a water body or reusing the water quality requirements and purifying it can effectively save water and energy and benefit mankind, but the sewage treatment methods in the prior art are not satisfactory, and even directly discharged. Cause serious waste of water resources and environmental pollution

Method used

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  • Sewage treatment system and water treatment process thereof
  • Sewage treatment system and water treatment process thereof
  • Sewage treatment system and water treatment process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Step 1: the sewage in the regulating tank 700 enters the oxidation ditch 100 for treatment, and after 12 hours of treatment, the first-grade water is obtained;

[0058] Step 2: the primary water in step 1 enters the secondary sedimentation tank 200, and after precipitation, its supernatant is taken to obtain secondary water;

[0059] Step 3: The secondary water in step 2 enters the BAF biofilter for treatment, specifically, the carbon oxidation / nitrification tank 300 and the denitrification tank 400 are equipped with aeration equipment, and the aeration equipment is connected to the fan, wherein Treat in carbon oxidation / nitrification tank 300 for 10h, the gas-water ratio is 10:1, the ammonia nitrogen in the water is carried out nitrification reaction under the effect of aerobic microorganism, gets its supernatant liquid, obtains nitrification water; Backwashing in the air, the backwashing time is 24h, the gas backwashing intensity: 9L / m 2 .s, water backwash intensity:...

Embodiment 2

[0063] Step 1: The sewage in the regulating tank 700 enters the oxidation ditch 100 for treatment, and after 18 hours of treatment, the first-grade water is obtained;

[0064] Step 2: the primary water in step 1 enters the secondary sedimentation tank 200, and after precipitation, its supernatant is taken to obtain secondary water;

[0065] Step 3: The secondary water in step 2 enters the BAF biofilter for treatment, wherein it is treated in the carbon oxidation / nitrification tank 300 for 12 hours, the gas-water ratio is 20:1, and the ammonia nitrogen in the water is under the action of aerobic microorganisms Carry out nitrification reaction, take its supernatant to obtain nitrification water; backwash the nitrification water in a clear water tank, the backwash time is 36h, and the gas backwash intensity: 9L / m 2 .s, water backwash intensity: 4.5L / m 2 .s; then denitrify the backwashed nitrification water in the denitrification tank for 10 hours, the reflux water ratio is 5:1; ...

Embodiment 3

[0069] Step 1: the sewage in the regulating tank 700 enters the oxidation ditch 100 for treatment, and after 20 hours of treatment, first-grade water is obtained;

[0070] Step 2: the primary water in step 1 enters the secondary sedimentation tank 200, and after precipitation, its supernatant is taken to obtain secondary water;

[0071] Step 3: The secondary water in step 2 enters the BAF biofilter for treatment, wherein it is treated in the carbon oxidation / nitrification tank 300 for 15 hours, the gas-water ratio is 20:1, and the ammonia nitrogen in the water is under the action of aerobic microorganisms Carry out nitrification reaction, take its supernatant to obtain nitrification water; backwash the nitrification water in a clear water tank, the backwash time is 48h, and the gas backwash intensity: 9L / m 2 .s, water backwash intensity: 4.5L / m 2 .s; then denitrify the backwashed nitrification water in the denitrification tank for 10 hours, the reflux water ratio is 5:1; the ...

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Abstract

The invention, which belongs to the field of environment-friendly water treatment, discloses a sewage treatment system and a water treatment process thereof, thereby solving a problem of poor water quality of a traditional oxidation ditch method. The sewage treatment system includes an oxidation ditch, a secondary sedimentation tank, a BAF biological filter and a disinfection tank arranged in sequence along the water flow direction; the BAF biological filter comprises a plurality of advanced treatment units; each advanced treatment unit comprises a carbon oxidation / nitrification tank and a denitrification tank; aerobic microorganisms and aerobic microorganism carriers are put into the carbon oxidation / nitrification tank; and anaerobic microorganisms and anaerobic microorganism carriers areput in the denitrification tank. According to the sewage treatment system disclosed by the invention, the water quality treated by the system is excellent and stably reaches the standard; and according to the water treatment process, the water quality treated by the process is excellent by controlling the purification process of the BAF biological filter and the advanced treatment of the activated carbon treatment tank.

Description

technical field [0001] The invention relates to the field of environmental protection chemical industry, in particular to a sewage treatment system and a water treatment process thereof. Background technique [0002] Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and more and more enters the daily life of ordinary people. The process of entering a water body or reusing water quality requirements and purifying it can effectively save water and energy and benefit mankind. However, the sewage treatment methods in the prior art are not satisfactory, and even directly discharged. Cause serious waste of water resources and environmental pollution. Contents of the invention [0003] The purpose of the present invention is to at least solve one of the technical problems in the prior art, and provide a sewage treatment system an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F3/302C02F3/1257C02F1/283C02F2303/04
Inventor 严明干霖王栋
Owner 江西康乾环保科技有限公司
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