Environment Impact Assessment For Jiangxi Shangrao Sanqingshan Airport Beijing Guohuantiandi Environmental Technology Development Center. Ltd. Oct. 2012 Content
Comparison of sewage treatment methods
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- 5.4 Comparison of motor vehicle fuel
- 5.5 Comparison of Sustainable Drainage Schemes
5.3 Comparison of sewage treatment methodsThe project sewage solution consists of three solutions. Solution 1 sewage generated by the airport since sewage treatment station after processing all back for greening, car washing and so on, all sewage not discharge; Solution 2 Airport generated sewage all of the municipal pipe network into the municipal sewage treatment plant; Solution 3 as sewage generated as part of the Airport since the sewage treatment station reused to the greening, car washing without discharging, remaining sewage by the municipal pipe network into the municipal sewage treatment plant. Solution 1 sewage after treatment for greening, car washing and so on, during the rainy season, used for landscaping, car washing, water demand is very few, because the Shangrao season for longer periods of time; therefore, need a large enough area to ensure the water storage pool water storage and construction of large water storage pool will increase covers an area of, increase the project investment. At the same time, if the water storage pool area is not enough will also have sewage efflux risk. Solution 2 sewage treatment plant all into the city, although no sewage discharging pollution around water environment risk, but increases the municipal sewage treatment plant operating load, at the same time as the airport greening and other aspects of the water with fresh water and increase water use, is not only a waste of water resources at the same time also did not respond to national emission reduction policies. Solution 3 sewage component reuse, component into the municipal sewage treatment plant, compared with Solution 1, reduce the water storage pool area, reducing the sewage efflux risk. Compared to Solution 2, reducing fresh water consumption, to respond positively to the national emission reduction policies, but also reduce the municipal sewage factory operating load. To sum up, the airport generates sewage portion of the sewage treatment station self-built reuse for greening, car washing without discharging, remaining sewage by the municipal pipe network into the municipal sewage treatment plant disposal is the best scheme.
Table 5-4-1 Comparison of motor vehicle fuel
From the table we can see, relative to the power, oil, gas cost is higher, and the fuel adding stations due to the need for tanks, large occupation area, hidden safety problems. Electric cars although the one-time investment is larger, but the power price is low, no tail gas exhaust, charging station safety. Therefore, recommended in the airport use of electric vehicles. 5.5 Comparison of Sustainable Drainage Schemes5.5.1 Scheme proposal Airport off-site drainage scheme not only with the drainage outlet is provided, with off-site drainage itself terrain and actual irrigation requirements. According to the Jiangxi Shangrao Sanqingshan Airport project feasibility study report, the original airport site drainage scheme for 6+2 (Scheme 1), namely the airport ground drainage outlet were set in 6, the airport River connected dark letter were set in 2. The culvert 1 rows of airport north of Zunqiao Village pool Maple concave flood, from north to south through the airport, ca. 586m; culvert 2 rows of airport south of Xinzhou District Maojialing Village Chalong pool flood, from south to north through the airport, ca. 485m. Culvert section size to meet maintenance operation requirements for control. In program draft discussion process, due to decrease in Zhangshutang pool catchment area, it affects downstream of farmland irrigation, my institute suggested adding floor drain outlet to complement its occupation of the catchment area, restoration of downstream farmland irrigation content. In addition, the culvert 2 row Chalong pool most of the downstream Irrigation area basic requisition, pool irrigation function is weakened, and the pool at the airport south, farmland and management (Maojialing Rural Water Tower Village) at the airport by airport north, partition, the usual operational management is not convenient. In view of this, according to the requirements of local villagers, I suggest Chalong pool requisition, the airport excavation backfill of earth and stone, culvert 2 cancel at the same time in the culvert 2 outlet arranged a floor drain outlet, in order to use the original drainage system, the water outlet is assigned row of water product cannot be greater than Chalong pool water catchment area of 0.05km2. the adjustment scheme for drainage Scheme 2 (8+1 for short). 5.5.2 Scheme comparison According to the scheme causes changes in the narrative that Scheme 1 and Scheme 2, drainage is not itself the two parallel programs, but according to the communication process in the newly discovered actual situation made reasonable adjustment. Of course, two schemes have their respective advantages and disadvantages, summarized as follows: 1. From the function comparison, Scheme 1 and Scheme 2 are able to solve the drainage problem and wear of field drainage problems; but Scheme 1 is limited to solve drainage problems, while the Scheme 2 can be combined to solve individual affected pool irrigation water replenishment problem, relatively speaking, Scheme 2 integrated better. 2. From the drainage works on airport impact, wear less airport culvert, the smaller effect on the airport, security is high. Scheme 1 has two in airport culvert, Scheme 2 only one, or stick out a mile. 3. From the operation management, if dark culvert 2 does not cancel, Chalong pool still belongs to district Mau town water tower village management. As described previously, pool and water tower village by airport partition, flood season inspection required bypass Zunqiao Village, management very inconvenient, and the Chalong pool Irrigation area most airport requisition, actual irrigation function was greatly reduced. Therefore, in this way for 2, Scheme is better than Scheme 1. 4. From the investment point of comparison, it added two floor drain outlet on the original drainage system then partition, not the length of drainage ditch, which also does not increase the investment increase in off-site drainage channel of Zhangshutang pool is very short, about 70m, investment of about 50000 yuan; increase the original culvert drain ditch 2 position off-site drainage basic use the original dark culvert 2 gutter, also add no additional off-site drainage engineering cost. Chalong pool backfill engineering quantity is increased, according to its capacity of 20000 m3, fill the required investment of about 400000 yuan. Therefore, increase the cost of total about 450000 yuan. And reduce the cost for the culvert 2, according to 485m length gauge, investment of about 2000000 yuan. So Scheme 2 saves 1550000 yuan compared with Scheme 1. To sum up, according to the communicating parties as well as to elicit local villager opinion after the adjustment of the drainage Scheme 2 overall better, the design is recommended for Scheme 2, i.e. 8+1 drainage scheme. Directory: curated curated -> Concept stage curated -> Concept stage curated -> Republic of Côte d'Ivoire Urbanization Review curated -> Report No: aus11011 Central America curated -> Report No. 94474-pk fiscal Disaster Risk Assessment Options for Consideration curated -> Environmental and Social Management Framework for the Costa Rica Telecommunications Sector Modernization Project curated -> Growth through Innovation An Industrial Strategy for Shanghai By Shahid Yusuf Kaoru Nabeshima April 22nd, 2009 curated -> Report No: 70178. 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