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High efficiency sewage treatment method

A sewage treatment method and sewage technology, which are applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Unsatisfactory, limited processing capacity and other problems, to achieve the effect of stable processing effect, reducing supporting investment, and facilitating centralized management

Inactive Publication Date: 2005-09-21
昆明柯利欣环保科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

However, the existing various sewage treatment methods have extremely limited treatment capacity. Whether it is the amount of sewage treatment or the effect of sewage treatment, they are far from meeting the actual requirements of timely treatment of industrial and domestic sewage.
Because in the existing sewage treatment methods, such as biochemical method, aeration and oxygenation method, filtration method, etc., not only the investment is large, the floor area is large, the operating cost is high, but the processing capacity and treatment effect are not ideal; Condensation method, there are problems such as poor treatment effect, high operating cost, and easy to cause secondary pollution.
In addition, most of the existing sewage treatment methods have problems such as the need for supporting pipe network systems and how to reuse reclaimed water.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The treated sewage water quality is as follows: COD cr 500mg / L, BOD 5 150mg / L, SS≤200mg / L, NH 3 -N≤100mg / L, T-P≤5mg / L, pH=6.5-9.0.

[0029] The treated effluent quality is as follows: COD cr 50mg / L, removal rate over 90%, BOD 5 10mg / L, the removal rate is above 93.3%, SS≤10mg / L, the removal rate is above 95%, NH 3 -N≤8mg / L, the removal rate is above 92%, T-P≤1mg / L, the removal rate is above 80%, pH=6-9.

[0030] The specific treatment is as follows:

[0031] 1. Pretreatment: send the sewage from the sump to the mechanical grille, and control the flow rate of the screen to 15000-35000m 3 / d, remove the large particles and fiber impurities, and then send it to the grit chamber, control the flow rate in the canal to 0.9m / s, stay for 30s, remove the sand particles with a specific gravity of 2-3 and a particle size above 0.2mm, and send the sewage into the In the primary sedimentation tank, the sedimentation time is controlled for 1.8 hours, the sewage is sent to th...

Embodiment 2

[0039] The treated sewage water quality is as follows: COD cr 400mg / L, BOD 5 100mg / L, SS=180mg / L, NH 3 - N = 90 mg / L, T-P = 3.8 mg / L, pH = 6.5.

[0040] The treated effluent quality is as follows: COD cr 55mg / L, BOD 5 11mg / L, SS=12mg / L,, NH 3 -N=9 mg / L, T-P=1 mg / L, pH=9.

[0041] The specific treatment is as follows:

[0042] 1. Pretreatment: send the sewage from the sump into the mechanical grille, and control the flow rate of the screen to 15000-35000m 3 / d, remove the large particles and fiber impurities, and then send it to the grit chamber, control the flow rate in the canal to 0.9m / s, stay for 30s, remove the sand particles with a specific gravity of 2-3 and a particle size above 0.2mm, and send the sewage into the In the primary sedimentation tank, the sedimentation time is controlled for 1.8 hours, the sewage is sent to the biochemical system, and the sand residue is discharged into the sand residue tank;

[0043] 2. Biochemical treatment: Introduce sewage in...

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Abstract

The invention provides a high efficiency sewage treatment method which comprises pre-processing, biological chemical treatment, deposition processing, deposition trash concentration disposal, and thick sludge dehydration treatment. By employing the biological method with anoxybiotic, anaerobic as the main steps and aerobic as the auxiliary step, the NH3-N, T-N and T-P in the sewage can be removed effectively, and the binding precipitant has very strong physical adsorption property.

Description

technical field [0001] The invention relates to a sewage treatment method, which belongs to the technical field of comprehensive sewage treatment. Background technique [0002] With the development of industrial production and the improvement of people's living standards, the volume of industrial sewage and urban domestic sewage is increasing at an alarming rate. One of the reasons for threatening the human living environment. However, the existing various sewage treatment methods have extremely limited treatment capacity. No matter the amount of sewage treatment or the effect of sewage treatment, they are far from meeting the actual requirements of timely treatment of industrial and domestic sewage. Because in the existing sewage treatment methods, such as biochemical method, aeration and oxygenation method, filtration method, etc., not only the investment is large, the floor area is large, the operating cost is high, but the processing capacity and treatment effect are no...

Claims

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Application Information

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IPC IPC(8): C02FC02F9/02C02F9/14
Inventor 王根渝桂大海罗向阳
Owner 昆明柯利欣环保科技有限公司
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