Model of CO2 release amount in sewage treatment

A technology for sewage treatment and release, which is applied in the field of environmental engineering to achieve accurate and reliable estimation

Inactive Publication Date: 2015-03-18
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Intergovernmental Panel on Climate Change (IPCC), based on the CO released from sewage treatment 2 It is the result of the action of organisms (microbes), and it can also be used by organisms (plants), so it is excluded from the list of greenhouse gases, so that sewage treatment still emits CO without scruples. 2

Method used

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  • Model of CO2 release amount in sewage treatment
  • Model of CO2 release amount in sewage treatment
  • Model of CO2 release amount in sewage treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0031] refer to figure 1 , using the inverted A / A / O sewage treatment process to establish CO in sewage treatment 2 release model.

[0032] 1. Biochemical action produces CO 2 Release amount, in the inverted A / A / O wastewater treatment process, CO 2 The processing links for the generation of releases are mainly:

[0033] ①Aerobic decomposition, anabolism and self-decomposition or endogenous respiration of microorganisms in the aerobic pool;

[0034] ② Anaerobic decomposition, synthetic metabolism and self-decomposition of microorganisms in anaerobic pool;

[0035] ③Denitrification of anoxic pool and self-decomposition of microorganisms.

[0036] 1) Aerobic pool CO 2 Production mechanism and release amount

[0037] Aerobic pools produce CO 2 The main functions are: organic pollutants and sludge oxidative decomposition, see (7) and (8) chemical equations, both of which are expressed by total organic carbon (TOC). CO 2 Yield is +R aerobic ,co 2，TOC .

[0038] C 10 h ...

Embodiment approach 2

[0095] Using the A / O sewage treatment process to establish CO in sewage treatment 2 release model. Since there is no anaerobic tank in the A / O sewage treatment process, formulas (13) and (26) are removed in Embodiment 1. Others are the same as in Embodiment 1, and the A / O sewage treatment process is adopted, and the sewage treatment releases CO 2 The model is as follows:

[0096] m bio- co 2 = Maerobic ,co 2 +M anoxic ,co 2 (34)

[0097] m no-bio- co 2 = M no-bio- co 2，coarse screenings +M no-bio- co 2，fine screenings +M no-bio- co 2，gritchambe +M no-bio- co 2，aerobic chamber +M no-bio- co 2，anoxic chamber +M no-bio- co 2，secondary sedimentationtank +M no-bio- co 2，disinfection canal +M no-bio- co 2，digestion chamber +M no-bio- co 2，dewatering (35)

[0098] Mco 2 = M bio- co 2 +M no-bio- co 2 (36)

Embodiment approach 3

[0100] Activated sludge treatment process is used to establish CO2 in sewage treatment 2 release model. The anaerobic and anoxic effects in Embodiment 1 are removed, that is, the formulas (13), (16), (26), and (27) in Embodiment 1 are removed. Others are the same as Embodiment 1, and activated sludge is used Treatment process, sewage treatment releases CO 2 The model is as follows:

[0101] m bio- co 2 = M aerobic ,co 2 (37)

[0102] m no-bio- co 2 = M no-bio- co 2，coarse screenings +M no-bio- co 2，fine screenings +M no-bio- co 2，gritchambe +M no-bio- co 2，aerobic chamber +M no-bio- co 2，secondary sedimentation tank +M no-bio- co 2，disinfectioncanal +M no-bio- co 2，digestion chamber +M no-bio- co 2，dewatering (38)

[0103] Mco 2 = M bio- co 2 +M no-bio- co 2 (39)

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Abstract

The invention relates to the technical field of environmental engineering, and particularly relates to a model of the CO2 release amount. According to the model of the CO2 release amount in sewage treatment, released CO2 includes CO2 released when organic pollutants are degraded by aerobic microorganisms in an aeration tank in the sewage treatment process, and also includes CO2 released by a biochemical action and a non-biochemical action of each treatment step in the sewage treatment process. Because of adopting of the technical scheme, the model can accurately grasp the CO2 release amount of all steps in the sewage treatment, so that estimation of CO2 released by the sewage treatment is more accurate and reliable, and a scientific basis is provided for implementation of CO2 emission reduction and development and utilization in the sewage treatment.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a CO 2 A model of release volume. Background technique [0002] In the initial design of sewage treatment engineering, it was considered that CO 2 It is non-toxic and harmless, and its discharge will not cause adverse environmental problems. Therefore, physical, chemical, biological and other methods are used to convert pollutants (mainly carbohydrates) in water into CO 2 Discharge into the atmosphere, see the following formula: [0003] C 10 h 19 o 3 N+12.25O 2 =10CO 2 ↑+NH 4 ++7.5H 2 o [0004] It was later discovered that CO in the atmosphere 2 Has a strong greenhouse effect, and the CO in the atmosphere 2 The concentration is increasing sharply, and the resulting environmental problems (such as climate anomalies) are becoming more and more obvious and serious. Since then, greenhouse gas emission reduction actions have been implemented on a glob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 陈振民
Owner SHANGHAI INST OF TECH
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