Description of domestic waste incineration power plant project in Jiufeng Village, Zhongtai Township, Yuhang District, Hangzhou City

On February 28, 2014, Hangzhou Jiufeng Environmental Energy Co., Ltd. issued the "Instruction on the Construction of Hangzhou Jiufeng Waste-to-Energy Power Generation Project." Note: This explanation is quoted from Annex 1 of the "Pre-approval Announcement on (Hangzhou City) Hangzhou Jiufeng Waste-to-Energy Power Generation Project". From 2005 to 2013 in Hangzhou urban area, the average annual growth rate of garbage was 10.7. The total amount of garbage in Hangzhou in 2011 was approximately 2.61 million tons. In 2012, the domestic waste generation in Hangzhou urban area (including Xiaoshan and Yuhang) was 2.8154 million tons. In 2013, the domestic waste generation in Hangzhou urban area (including Xiaoshan and Yuhang) was 3.08 million tons. ton. Garbage disposal is becoming more and more stressful. At the same time, with the construction of the Yuhang Group Future Science and Technology City, the original Hangzhou Yuhang Jinjiang Environmental Protection Energy Co., Ltd. (Cangqian) is facing relocation, and the garbage within the original disposal range is in danger of having nowhere to go.

According to the "Hangzhou City Master Plan", "Hangzhou City Environmental Sanitation Professional Plan" and Hangzhou Hang Gui Han No. 2013308, the Planning Bureau recommends that new waste incineration projects in the western part of Hangzhou city be adjusted in accordance with major project plans Carry out site selection demonstration. According to the relevant requirements of the Hangzhou Municipal Government and Hangzhou Urban Investment Group, a new waste incineration power generation project in the west will be constructed. The project is jointly invested and constructed by Hangzhou Thermal Power Group Co., Ltd., Hangzhou Environment Group Co., Ltd. and Hangzhou Road and Bridge Co., Ltd., which are affiliated to Hangzhou Urban Construction Investment Group Co., Ltd. The newly established company entrusts units with relevant planning preparation qualifications to prepare planning and site selection demonstration reports for specific projects. In October 2013, Hangzhou Jiufeng Environmental Energy Co., Ltd. was established by Hangzhou Urban Investment Group and entrusted the Hangzhou Urban Planning and Design Institute to carry out the site selection and site selection demonstration report preparation for the waste incineration project in western Hangzhou. On the basis of site selection plan 1, the planning plan will be prepared to clarify the nature and boundaries of the land.

The basic principles of the architectural plan are

(1) On the premise of satisfying the overall layout and the main production plant process flow, try to make the functional divisions clear, and the layout of various pipelines is convenient and convenient. Reasonable.

(2) Reasonably determine the vertical layout to save construction work.

(3) Pay attention to environmental protection, make full use of natural conditions, strengthen greening, and create a modern corporate atmosphere.

(4) Strictly implement the current national technical specifications on fire protection, sanitation, safety, etc.

According to local conditions, the layout is reasonable. Since the total land size of the original industrial land of this plot is 261.3 acres, in order to ensure the needs of land use and slope control and consider the need for ancillary land in the future. The total land area of ??the project is still 261.3 acres. The construction land and related indicators of the project are shown in the table below: Table of Main Economic and Technical Indicators Serial Number Name Unit 1 Factory land area m2 104697 2 Factory building area m2 38061 3 Building density 36.4 4 Building area m2 93500 5 Floor area ratio 0.89 6 Green space area m2 18417 7 Green space ratio 20.00 8 Building height M 45 Overall plan

The plan determines the long-term waste treatment model around ecological balance and resource regeneration for waste collection, transportation and disposal, and establishes corresponding garbage collection, transportation and disposal system. Treat waste from the source, expand comprehensive utilization, reduce total production, reduce the pressure on waste terminal processing, and form a waste treatment model in which sanitary landfill, safe incineration and comprehensive utilization complement each other. Therefore, waste incineration is one of the main waste disposal modes identified in the master plan.

In addition, the new Xiaoshan waste incineration plant in the southern part of Xiaoshan City (Ploughshare Gold), the expansion of Hangzhou Green Energy Environmental Protection Power Plant (Binjiang), and the expansion of Yuhang Jinjiang waste incineration plant determined in the master plan have all been implemented. . Due to the new construction of the Future Science and Technology City in the west of the city, the Yuhang Jinjiang waste incineration plant is facing relocation and needs to be implemented in conjunction with this site selection plan.

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The location of the incineration plant has been clarified in the 2013 "Hangzhou City Master Plan Revision (2001-2020)" (draft plan).

Environmental Sanitation Professional Planning

The current domestic waste treatment sites in Hangzhou include Hangzhou Solid Waste Treatment Co., Ltd. (Hangzhou Tianziling Waste Treatment General Site), Xiaoshan District Reclamation Outer Section 6 Waste Treatment Site, Yuhang Jinjiang Waste Incineration Plant, Hangzhou Neng Da Green Energy Co., Ltd. (Qiaosi), Hangzhou Green Energy Environmental Protection Power Plant (Binjiang), Hangzhou Xiaoshan Jinjiang Green Energy Co., Ltd.

Based on the waste treatment volume and treatment flow in Hangzhou urban area, it is Yanchang Tianziling. The landfill life of the main waste treatment site, vigorously promote the utilization of waste incineration, planning to consider locating a new Tianziling waste incineration plant (tentative name) around or within the Tianziling waste treatment site, and relocating Hangzhou Nengda Green Energy Co., Ltd. (Qiaosi) to Jiangdong Industrial Park to expand the Hangzhou Green Energy Environmental Protection Power Plant (Binjiang). The waste disposal site in the sixth section of the Xiaoshan District Reclamation will be filled and closed until 2010, and other landfills and waste incineration plants will be retained. Temporary domestic waste dumps in other towns will be gradually closed and construction will be carried out in stages.

The "Hangzhou Environmental Sanitation Professional Plan Revision (2008-2020)" is in the "Hangzhou City Master Plan (2001-2020)". In terms of the layout of domestic waste disposal facilities, the "Hangzhou Municipal Environmental Sanitation Professional Planning Revision (2008-2020)" newly proposed to select new sites around or within the Tianziling Waste Treatment General Site. Tianziling Waste Incineration Plant (tentative name), and it is clear that Hangzhou Nengda Green Energy Co., Ltd. (Qiaosi) will be relocated to Jiangdong Industrial Park.

Revision of the 2013 Environmental Health Professional Plan (2008-2020). ) In the partial revision (draft plan), the collection and transportation zones have been adjusted to clarify the location of the Jiufeng incineration plant and the processing capacity of 3,000 tons. Roads

According to the service scope of the incineration plant (mainly serving Yuhang Group and Liang). Zhu Group, Xihu District, Gongshu District), based on the geometric center of each area, select 5 characteristic points as the starting point for calculating the vehicle transportation distance in each area, including the intersection of Wenyi West Road and Dongxi Avenue in the Yuhang Group, Liangzhu The intersection of National Highway 104 and Liangxiang Road in the group, the intersection of Dengyun Road and Tongyi Road in Gongshu District, the intersection of Fengtan Road and Pingshui Road on the north side of Xihu District, and the intersection of National Highway 320 and Hangfu Road in Zhijiang New City .

The current surrounding bus lines are mainly along Provincial Highway 02. The bus stop closest to the project site is Shangkengwu Station (about 2km from the project site area), with 1 bus line ( No. 475: Wangjiabu-Yuhang), No. 598 that originally ran through Provincial Highway 02 to Lin'an has been suspended, and the surrounding bus service level is poor. It is planned that the long-term rapid bus line 4 will be extended to Zhongtai Bus Station, which will be convenient for this area. Block workers transfer to express buses and regular buses to enter the main city of Hangzhou.

After the completion of this project, according to reasonable traffic organization, the impact of site construction and operation on surrounding road traffic facilities will be within an acceptable range. Within; since this project is still in the site selection and demonstration stage, the final parking and construction requirements of the project itself need to be implemented in accordance with the construction plan of the next stage.

Water Supply

"Yuhang District Water Supply Professional Plan" (revised), the site selection belongs to the Yuhang Group Water Supply System of Yuhang District. The water supply planning of this system is mainly solved by Hangzhou transfer. The shortfall will be solved by transfer from Yanhe Water Plant and Jingshan Water Plant. In order to ensure the safety of water supply, a DN1000 pipeline has been built on Provincial Highway 02 to connect the water supply system of Yuhang Group and Lin'an Water Division. The Jiufeng garbage incineration project can use this pipeline.

Due to the floor height difference, the height difference from the access point of Provincial Highway 02 to the selected site is nearly 70 meters. In order to ensure the safety of water supply, two lifting pump stations need to be built midway. The area of ??the pump station is temporarily according to 600 m2 controlled. The internal water supply pipe network forms a pipe layout that combines ring and branch shapes to ensure the safety of water supply.

Drainage

The annual domestic drainage volume of this project is: 6.935x103m3; the annual production drainage volume is: 63.8×105m3.

The sewage and wastewater discharged from this project will be collected through the pipe network and sent to the landfill leachate treatment station for treatment until it reaches the reuse water standard and will be fully reused. In order to rationally utilize water resources and save water, part of the return water of the cooling water of each auxiliary machine of the boiler turbine in this project is used as supplementary water for circulating water, and part is used as boiler blowdown cooling water, which is then lifted and sent to the circulating water by the reuse water pump. The return water system also serves as supplementary water for circulating water; for water points with low water quality requirements, such as slag cooling, ash slag humidification, fly ash solidification, etc., the concentrated wastewater discharged from the sewage treatment station and landfill leachate treatment station is used ; Circulating water sewage is used for ground washing; the landfill leachate generated in this project is treated to meet the standard water quality of reused water and then used as supplementary water for circulating water. This not only achieves the reuse of water, but also improves the water reuse rate. It also achieves zero discharge of waste water.

After being organized, the rainwater is discharged into the nearby rainwater pipe network, and finally discharged into Dongtiao River through the flood drainage ditch.

Electricity

The total installed capacity of this project is 60MW, equipped with two N30-3.80/395 medium-pressure condensing steam turbines and two QF-30 generators. The average annual total power generation is 3.761×108kW·h, the average annual grid-connected power is about 3.159×108kW·h, and the self-consumption power is 0.602×108kW·h.

The installed capacity of this phase of the project is two 30MW generator sets, the generator outlet voltage is 10.5kV, and the 10kV generator section I and II busbars are provided. It is boosted to a 110kV system through two main transformers with a capacity of 40MVA. The 110kV system adopts single busbar segmented wiring and is connected to the superior substation with two 110kV lines.

The AC motor voltage levels of this project are AC10kV and AC380V, and the factory power voltage levels are 10kV and 380/220V. 10kV is an ungrounded system. The 380V system wiring type adopts TN-C-S system.

Except for a few cables that are directly buried in the ground, all cables in the factory are laid along the cable trench. The cables should be laid in layers in the cable trench, with power cables on the upper layer and control cables on the lower layer.

The cables in the factory building are laid in cable trenches, cable bridges and partially through steel pipes.

Both power cables and control cables are flame-retardant cables. And adopt appropriate fire prevention measures. Waste gas

While reliable and stable treatment is possible, environmental protection standards must be strictly enforced to reduce the concentration of pollutant emissions. On the basis of meeting the international "Pollution Control Standards for Domestic Waste Incineration", the emissions of some indicators must be appropriately increased. standard.

The flue gas pollutant emission indicators proposed for this project are shown in the following table. The sequence of flue gas emission indicators

No. Pollutant Name Unit National Standard

GBl8485-2001 National Standard

GBl8485-Draft for Comments EU 2000/76/EC This project guarantees an average daily value of half an hour

Average daily average of half an hour

100 Average daily value of half an hour

Mean value 1 Smoke mg/Nm3 80 20 (Measurement value) 10 30 20 (Measurement value) 2 HCl mg/Nm3 75 50 60 10 60 10 60 3 HF mg/Nm3 - - - 1 4 1 4 4 SOx mg/Nm3 260 80 100 50 200 50 100 5 NOx mg/Nm3 400 200 250 200 400 200 250 6 CO mg/Nm3 150 60 100 50 100 50 100 7 TOC mg/Nm3 - - - 10 20 10 20 8 Hg /Nm3 0.2 0.05( Measured average value) 0.05 0.05 0.05 0.05 9 Cd mg/Nm3 0.1 - - - - - - - Cd T1 - 0.05 (Measured average value) 0.05 0.05 0.05 0.05 10 Pb mg/Nm3 1.6 - - - - - - - Pb Cr and other heavy metals - 1. 0 1.0 0.5 0.5 0.5 0.5 11 Flue gas blackness Ringelmann level 1 1 1 1 12 Dioxins (TEQ) ngTEQ/Nm3 1.0 0.1 0.1 0.1 Note: 1) The standard limits specified in this table are all based on the standard The dry flue gas containing 11O2 under normal conditions is converted to the reference value.

2) The maximum blackness time of smoke shall not exceed 5 minutes in any 1 hour.

3) HCl, SOx, NOx, and CO in GB18485-2001 are hourly average values, and other pollutants are measured average values.

4) Hg, Cd Tl, Pb Cr and other heavy metals and dioxins in EU2000/76/EC are measured average values.

In order to meet the above emission standards, the flue gas purification process mainly controls acid gases (HCl, HF, SOX), NOx, particulate matter, organic matter and heavy metals. According to current research and engineering practice results, A combined process of acid gas removal, particulate matter capture, NOx removal, and removal of organic matter and heavy metals including dioxins should be used.

Waste residue

The disposal of waste residue in this project is currently based on comprehensive utilization. The main production equipment is: two sets of asphalt mixing production lines, one set of cement stabilized gravel production line, and one set of waste asphalt mixing Material recycling and processing production line, a set of waste incineration slag aggregate production line.

Fly ash

Currently calculated based on the 3000T/d waste incineration capacity of the incineration plant, the amount of fly ash produced after incineration is 83T/d, and its disposal method is to wash it with water and then send it to the cement kiln. Centralized and comprehensive disposal can effectively prevent secondary pollution of fly ash. In the end, the environmental protection department will conduct comprehensive disposal according to relevant national, provincial and municipal requirements.