This regulation is formulated to improve the technical level of urban domestic waste composting treatment and make it scientific and standardized. This regulation is applicable to aerobic static composting treatment of urban domestic waste. CJJ/T 52-1993 Technical Regulation for Aerobic Static Composting Treatment of Urban Domestic Waste CJJ/T52-1993 Standard download decompression password: www.bzxz.net

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Industry Standard of the People's Republic of China
Technical specification for municipal solid wastestatic aerobic compostingCJJ/T52—93
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Industry Standard of the People's Republic of China
Technical specification for municipal solid wastestatic aerobic compostingCJJ/T52—93
Editor: School of Environmental Engineering, Tongji UniversityApproval Department: Ministry of Construction of the People's Republic of ChinaEffective Date: August 1, 1993
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Engineering Construction Standard Full Text Information System
Notice on the Release of the Industry Standard "Technical Regulations for Aerobic Static Composting Treatment of Municipal Domestic Waste" Jianbiao [1993] No. 47
According to the requirements of the former Ministry of Urban and Rural Construction and Environmental Protection (88) Chengbiaozi No. 141, the "Technical Regulations for Aerobic Static Composting Treatment of Municipal Domestic Waste" edited by the School of Environmental Engineering of Tongji University has been reviewed and approved as a recommended industry standard, numbered CJJ/T52-93, and will be implemented from August 1, 1993. This standard is managed by the Shanghai Municipal Environmental Sanitation Administration, the technical unit responsible for urban environmental sanitation standards of the Ministry of Construction, and its specific interpretation work is the responsibility of the School of Environmental Engineering of Tongji University.
This standard is organized and published by the Standard and Quota Research Institute of the Ministry of Construction. Ministry of Construction of the People's Republic of China
January 28, 1993
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Engineering Construction Standards Full-text Information System
Composting Raw Materials
Aerobic Static Composting Process
4.1 Composting Process Types and Flow
Composting Fermentation Cycle and Fermentation Conditions
Compost Products
Environmental Requirements for (Site)
Composting Plant
Working Area Environment·
Inside and Outside Environment of (Site)
Environmental Monitoring
Production Process Testing·
Appendix A
Appendix B
Testing Methods
Explanation of Terms Used in This Regulation
Additional Explanations
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1 General Principles
This regulation is formulated to improve the technical level of urban domestic waste composting treatment and make it scientific and standardized.
2 This regulation applies to aerobic static composting treatment of urban domestic waste. 1.0.3
In addition to complying with this regulation, aerobic static composting treatment of urban domestic waste shall also comply with the provisions of relevant national standards in force. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
2 Terminology
2.0.1 Aerobic static composting
The composting materials complete the whole process of biodegradation under aerobic and static conditions. One-time fermentation
The composting materials complete the whole process of biodegradation in the fermentation facility at one time. 2.0.3
Three-time fermentation
The composting materials complete the whole process of biodegradation in different fermentation facilities successively. Primary fermentation
The first stage of fermentation in secondary fermentation. 5 Secondary fermentationbzxz.net
The second stage of fermentation in secondary fermentation. 2.0.6 Layer oxygen concentration
The percentage of oxygen (O2) content in the voids of compost in composting facilities. 2.0.7 Oxygen consumption rate
The amount of oxygen consumed by fermentation materials per unit time. 2.0.8 Fermentation cycle
The time required for compost raw materials to mature and reach harmless sanitation standards. 2.0.9 Primary composting
The compost product that reaches harmless sanitation standards and is initially stable and mature after primary fermentation of compost raw materials.
2.0.10 Mature composting
The compost product that reaches harmless sanitation standards and is fully stable and mature after primary fermentation of compost raw materials or secondary fermentation. 2.0.11 Special compost
Mature compost is further processed into various specifications of compost products by adding various organic and inorganic fertilizers.
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3 Compost raw materials
Compost raw materials should be urban domestic waste and other waste that can be used as compost raw materials. 3.0.2
The raw materials entering the warehouse should meet the following requirements:
The moisture content should be 40% to 60%.
2The organic matter content is 20% to 60%.
The carbon-nitrogen ratio (C/N) is 20:130:1.
The heavy metal content index should meet the provisions of the current national standard "Control Standards for Agricultural Use of Urban Waste".
3 The following substances are strictly prohibited from being mixed into composting materials: 3.0.3
(1) Toxic industrial products and their residues; (2) Toxic reagents and medicines;
(3) Items that react chemically and produce harmful substances; (4) Corrosive or radioactive substances; (5) Inflammable, explosive and other dangerous goods;
(6) Biological hazardous materials and hospital waste;
(7) Other substances that seriously pollute the environment. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Aerobic Static Composting Process
Composting Process Types and Flow
4.1.1 Aerobic composting process types can be divided into primary fermentation and secondary fermentation. The one-time fermentation process shall comply with the following provisions (the process flow diagram is shown in Figure 4.1.2
4.1.2):
Final disposal
Recyclables
No pretreatment
Non-male fertilizer
Material conditioning (moisture content, C/NO)
Reservoir
Infiltration source water
Recyclables
Preparation
Single-time fermentation process flow diagram
4.1.2.1 Compost raw materials that meet the requirements for incoming raw materials can enter the fermentation facility for fermentation directly or enter the fermentation facility for fermentation after pretreatment to remove coarse materials and non-composted materials. 4.1.2.2 Before the incoming raw materials enter the fermentation facility for fermentation, material conditioning (moisture content, C/N) must be carried out.
After fermentation, the compost must be post-processed to reach the qualified composting system. Engineering Construction Standard Full Text Information System
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4.1.2.4 The recyclable materials of the sorted materials in the pre-treatment and post-treatment process should be recycled, and the non-compostable materials and sundries must be finally disposed of by sanitary landfill or other harmless measures.
4.1.3 The secondary fermentation process shall comply with the following provisions (see Figure 4.1.3 for the process flow diagram):
Final disposal
Recyclable materials
No pre-treatment
Non-compostable materials
Material adjustment (moisture content, C/N)
Water storage robe
Leachate
Micro enzyme!
Fermentation facilities
Diagram of the tertiary fermentation process
Recyclables
4.1.3.1 Compost materials that meet the requirements for incoming materials can be directly fermented in the primary fermentation facility or be fermented in the primary fermentation facility after pretreatment to remove bulky materials and non-compostable materials.
Material conditioning (moisture content, C/N) must be carried out before the incoming materials enter the primary fermentation facility for fermentation.
4.1.3.3The compost after secondary fermentation must be post-processed to achieve qualified compost products.
The recyclable materials of the materials sorted during the pretreatment and post-processing process should be recycled as resources, and the non-compostable materials and sundries must be finally disposed of by sanitary landfill or other harmless treatment measures.
Composting fermentation cycle and fermentation conditions
4.2.1 The fermentation cycle of the one-time fermentation process should not be less than 30 days, and the primary fermentation and secondary fermentation cycles of the secondary fermentation process should not be less than 10 days. 4.2.2 The fermentation facilities must have the performance of heat preservation, rainproof and anti-seepage, and must be equipped with ventilation, drainage and other devices for testing process parameters. 4.2.3 During the fermentation process, the change of the pile temperature must be measured, and the detection method should comply with the provisions of Appendix A. The temperature of each test point of the pile should be maintained above 55°C, and the duration should not be less than 5 days. The fermentation temperature should not be greater than 75°C. 4.2.4 During the fermentation process, the oxygen concentration should be measured, and the detection method should comply with the provisions of Appendix A. The oxygen concentration at each test point must be greater than 10%. 4.2.5 During the fermentation process, ventilation must be carried out, and different ventilation methods should meet the following requirements:
1 During natural ventilation, the pile height should be 1.2-1.5m, and the necessary strengthening measures in 4.2.5.1
should be adopted.
4.2.5.2 During mechanical ventilation, the oxygen consumption rate should be tracked and tested, and the ventilation volume should be adjusted in time. The standard air volume should be 0.05-0.20m/min per cubic meter of garbage; the wind pressure can be selected by increasing 1000-1500Pa for every 1m increase in the pile. The number and time of ventilation should ensure that the fermentation is carried out under the most suitable conditions. 4.2.6 When fermentation is terminated, the compost shall meet the following requirements: 4.2.6.1 The moisture content should be 25%~35%.
The carbon-nitrogen ratio (C/N) should not be greater than 20:1.
4.2.6.3 To achieve the harmless sanitation requirements, it must comply with the provisions of the current national standard "Hygienic Standard for Harmless Treatment of Excrement".
4.2.6.4 The oxygen consumption rate tends to be stable.
4.3 Compost products
4.3.1 Compost products must comply with the provisions of the current national standard "Standard for Agricultural Control of Urban Waste".
2 Compost products can be made into primary compost, mature compost and special compost according to their uses.
4.3.3 Before leaving the factory, compost products should be stored in a facility of a certain size with good ventilation conditions and protection from rain.
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Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Environmental requirements for composting plants (fields)
Working area environment
The noise in the working area should not exceed 85dB. If it exceeds the standard, noise reduction measures must be taken in accordance with 5.1.1
.
The allowable concentration of dust and harmful gases (H2S, SO2, NHs, etc.) in the working area should comply with the provisions of the current national standard "Industrial Enterprise Design Hygiene Standard". Dust prevention and dust removal measures should be taken for facilities that generate dust in the working area. The working area must have good ventilation conditions.
5.2 Plant (site) internal and external environment
5.2.1 The single index of the atmosphere inside and outside the plant (site) shall comply with the provisions of the third-level standard in the current national standard "Air Environment Quality Standard". 5.2.2 Domestic garbage should not be unloaded at any place inside or outside the plant (site). The unloading of garbage entering the plant (site) should be carried out in the feed bin. The scattered garbage in the plant (site) must be cleaned up every day.
5.2.3 Fermentation facilities should be equipped with deodorization devices. The odor level of the atmosphere inside and outside the plant (site) shall not exceed level 3.
5.2.4 Fermentation facilities must have devices for collecting seepage water. Seepage water should not be discharged, but should be collected and sent to the replenishment water storage tank together with the working area flushing sewage as water for material adjustment.
5.2.5 Fly killing measures should be taken in the plant (site) area, and fly density monitoring points should be set up.
Environmental monitoring
5.3.1 The environmental monitoring of the working area shall meet the following requirements: Engineering Construction 8 Standard Full Text Information System
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