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Hospital sewage treatment method

A sewage treatment method and hospital technology, which can be used in water/sewage treatment, biological water/sewage treatment, heating water/sewage treatment, etc., and can solve problems such as low removal rate

Inactive Publication Date: 2021-06-25
云南和泽环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing hospital sewage treatment methods have a negative effect on COD in sewage cr , BOD and NH 3 -N removal rate is low

Method used

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  • Hospital sewage treatment method

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Embodiment 1

[0022] The present embodiment provides a kind of hospital sewage treatment method, comprises the following steps:

[0023] S1. Sewage Sterilization: After the sewage produced in the hospital is collected, it is continuously sterilized by a tubular sterilizer to obtain sterilized wastewater; the sterilization temperature is 135°C.

[0024] S2, microbial treatment: cooling the wastewater after sterilizing treatment, adding microorganisms to the cooled wastewater, the addition of the microorganisms is 6% of the wastewater weight; 2 days of treatment; the microorganisms are Flavobacterium sea mud, Bacillus subtilis , Rhizopus niger, Esterogenic yeast, Bifidobacterium, Mucor racemosa and Mucor ruckeri, the weight ratio is 5:0.5:1:3:1:1:2.

[0025] S3. Centrifugal separation: use a continuous flow centrifuge to centrifuge the waste water after the microbial treatment in step S2, and discharge the clear liquid to the flocculation tank after centrifugation, and kill the bacteria in a ...

Embodiment 2

[0030] The present embodiment provides a kind of hospital sewage treatment method, comprises the following steps:

[0031] S1. Sewage Sterilization: After the sewage produced in the hospital is collected, it is continuously sterilized by a tubular sterilizer to obtain sterilized wastewater; the sterilization temperature is 110°C.

[0032] S2, microbial treatment: cooling the wastewater after sterilizing treatment, adding microorganisms to the cooled wastewater, the addition of the microorganisms is 1% of the wastewater weight; 5 days of treatment; the microorganisms are Flavobacterium sea mud, Bacillus subtilis , Rhizopus niger, Esterogenic yeast, Bifidobacterium, Mucor racemosa and Mucor ruckeri, the weight ratio is 1:2:2:1:0.5:5:1.

[0033] S3. Centrifugal separation: use a continuous flow centrifuge to centrifuge the waste water after the microbial treatment in step S2, and discharge the clear liquid to the flocculation tank after centrifugation, and kill the bacteria in a ...

Embodiment 3

[0038] The present embodiment provides a kind of hospital sewage treatment method, comprises the following steps:

[0039] S1. Sewage Sterilization: After the sewage produced in the hospital is collected, it is continuously sterilized by a tubular sterilizer to obtain sterilized wastewater; the sterilization temperature is 121°C.

[0040] S2, microbial treatment: the waste water after sterilizing treatment is cooled, and microorganism is added in the waste water after cooling, and the addition amount of described microorganism is 5% of waste water weight; Treat for 3 days; Microbe is sea mud Flavobacterium, Bacillus subtilis , Rhizopus niger, Esterogenic yeast, Bifidobacterium, Mucor racemosa and Mucor ruckeri, the weight ratio is 3:1:2:1:0.5:5:1.

[0041] S3. Centrifugal separation: use a continuous flow centrifuge to centrifuge the waste water after the microbial treatment in step S2, and discharge the clear liquid to the flocculation tank after centrifugation, and kill the ...

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Abstract

The invention belongs to the field of sewage treatment, and particularly relates to a hospital sewage treatment method which comprises the following steps: S1, sewage sterilization: after sewage generated by a hospital is collected, the sewage continuously passes through a tubular sterilization machine to be sterilized, and sterilized wastewater is obtained; S2, microbiological treatment: the sterilized wastewater is cooled, microorganisms are added into the cooled wastewater, and treating is conducted for 2-5 days, wherein the addition amount of the microorganisms is 1-6% of the weight of the wastewater; S3, centrifugal separation: centrifugal separation is conducted on the wastewater subjected to microbiological treatment in the step S2 by using a continuous flow centrifuge, clear liquid after centrifugation is discharged into a flocculation basin, and thalli are killed in a centralized manner; and S4, flocculation treatment: a flocculant is added into the clear liquid discharged into the flocculation basin, stirring is conducted for 30-50 minutes, standing is conducted for 60-120 minutes, and liquid supernatant is directly discharged, wherein the adding amount of the flocculating agent is 1-10% of the weight of the clear liquid. According to the method, CODcr (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and NH3-N in the hospital sewage are effectively removed.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a hospital sewage treatment method. Background technique [0002] Hospital sewage refers to the sewage discharged from hospitals (general hospitals, professional hospitals and other types of hospitals) to the natural environment or urban pipelines. Its water quality varies with the nature, size and area of ​​different hospitals. The amount of sewage discharged by each hospital bed is about 200-1000L per day. The main pollutants contained in hospital sewage are: pathogens (parasite eggs, pathogenic bacteria, viruses, etc.), organic matter, floating and suspended matter, radioactive pollutants, etc. The total amount of bacteria contained in untreated raw sewage reaches 10 8 Individuals / mL or more. The principle of hospital sewage treatment is: divide the quality and flow, separate the treatment locally, and eliminate the pollution at the nearest pollution so...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F2103/003C02F1/02C02F1/5236C02F1/54C02F1/56C02F1/38C02F3/348
Inventor 孟应斗吴钢冯建军
Owner 云南和泽环保科技有限公司
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