外贸旅游景点污水处理设备
编辑:出口污水处理设备 来自:https://www.zqwscl.com /日期:2023-02-06 13:03 / 人气:
1、山地风景区污水处理现状
(1)污水排放现状
1)山地风景区内的生活污水主要是餐饮和宾馆的生活污水,每日客流高峰相对集中,不同季节污水量波动较大,甚至处于景区不同位置的宾馆、餐厅的排放特点也不尽相同。总的来说,风景区餐饮污水的排放高峰在中午时段,这时污水的CODCr,BOD5浓度都较高,宾馆生活污水排放高峰在晚上,由于洗浴污水的进入,水量较大,相对浓度较低。
2)为了不破坏景区的视觉效果,污水管网一般都设置在相对较低和隐蔽的位置,因此污水管道水力坡度大,污水进入系统流速较高,造成调节池来不及调节,对后续处理单元造成了一定冲击。
(2)污水处理系统现状
1)山上风景区污水处理工艺流程大多是照搬比较成熟的城市小区生活污水处理工艺,没有充分考虑山上环境条件以及水质水量的特殊性和复杂性,更没有考虑污水处理构筑物与景观的协调性。
2)山上污水处理设施建设的可使用面积较小,多数处理系统采用了组合形式,各处理单元的池形只能服从于整体,所以系统内部的水力条件不好,有效池容减小,短路现象十分普遍,处理效果无法保证。3)处理系统设备的选型看重价格和安装方便,不少污水处理系统选用潜水型设备,这些设备初始安装较方便,噪声也较小,但是维修维护很困难。
2、风景区污水处理工艺的选择
(1)山地风景区污水处理系统
风景区应该严格禁止工业生产,因为工业生产一方面破坏景区质量,另外一方面,即从污水处理角度考虑,二者混合水非常难处理。本文主要讨论没有任何工业生产的山地风景区,这种风景区水质比较简单,属于一般生活污水,处理方法也相对简单。
目前山地风景区污水处理现状:早期排水规划参照城市排水设计,多采用小型污水处理系统,二级处理常采用生物膜法、活性污泥法。近几年,生态旅游逐渐火热,污水处理也开始向生态处理(自然生物处理)靠拢。自然生物处理法主要限制条件是占地大、周边环境容易恶化。山地景区范围广阔、植被条件好,适合进行生态处理。
(2)设备选型:
1)一体化设备具有处理效率高、能耗低、产泥量少、管理方便、占地面积小等优点。
2)酸化池的设立,可以免设初沉池及终沉池,低氧运行;生物滤料利用短世代微生物的吸附能力,可减少曝气强度。
3)生物好氧流化器处理效果好,占地少;混合性能好、传质速率快、生物量大、有机负荷高;可控制生物膜厚度的过度增长,可使循环式流化床中生物膜保持较高的活性;载体流失量小,流化性能好;氧的转移效率高,出水水质好。
4)污泥自行消化,剩余污泥少,一年排泥一到数次,省却巨额污泥处理费用。
综上所述,中侨启迪外贸旅游景区的一体化污水处理工艺技术水平先进,处理效果佳,占地指标低,运行费用低,管理便利。
Scenic spots are often far away from the city, sewage collection, discharge can not be connected with the municipal pipe network, generally have their own independent treatment system. At present, the sewage treatment design of scenic spot restaurants and hotels has always been the process and design parameters of urban sewage treatment. The water quality and quantity, discharge law and environmental conditions of scenic sewage are obviously different from the general urban domestic sewage and hotel sewage. The sewage treatment must fully consider the water quality, water quantity and environmental characteristics of scenic sewage in order to ensure the treatment effect.
1. Status quo of sewage treatment in mountain scenic spots
(1) Current situation of sewage discharge
1) The domestic sewage in the mountain scenic area is mainly the domestic sewage of catering and hotels. The daily peak of passenger flow is relatively concentrated, the amount of sewage in different seasons fluctuates greatly, and even the discharge characteristics of hotels and restaurants in different locations of the scenic area are different. In general, the discharge peak of catering sewage in scenic spots is at noon, when the concentration of CODCr and BOD 5 in the sewage is higher, and the peak of domestic sewage discharge in hotels is in the evening. Due to the entry of bath sewage, the water quantity is large and the relative concentration is low.
2) In order not to destroy the visual effect of the scenic area, the sewage pipe network is generally set in relatively low and hidden positions, so the hydraulic slope of the sewage pipe is large, and the sewage flow rate into the system is high, resulting in the regulation pool too late to adjust, which causes a certain impact on the subsequent treatment unit.
(2) Current situation of sewage treatment system
1) The sewage treatment process of mountain scenic spots is mostly copied from the mature domestic sewage treatment process of urban communities, which does not fully consider the mountain environmental conditions and the particularity and complexity of water quality and quantity, let alone the coordination of sewage treatment structures and landscape.
2) The usable area of the construction of mountain sewage treatment facilities is small, most of the treatment systems adopt the combined form, and the pool shape of each treatment unit can only obey the whole, so the hydraulic conditions inside the system are not good, the effective pool capacity is reduced, the short circuit phenomenon is very common, and the treatment effect cannot be guaranteed.3) The selection of treatment system equipment values the price and convenient installation. Many sewage treatment systems choose diving equipment. The initial installation of these equipment is more convenient, and the noise is also small, but the maintenance is very difficult.
2. Selection of sewage treatment process in scenic spots
(1) Sewage treatment system in mountain scenic area
Scenic spots should strictly prohibit industrial production, because industrial production on the one hand damages the quality of the scenic spot, on the other hand, from the perspective of sewage treatment, the mixture of the two water is very difficult to deal with. This paper mainly discusses the mountain scenic area without any industrial production, the water quality of this scenic area is relatively simple, belongs to the general domestic sewage, and the treatment method is relatively simple.
At present, the status of sewage treatment in mountain scenic areas: the early drainage planning refers to the urban drainage design, mostly using small sewage treatment system, and biofilm method and activated sludge method are often used for secondary treatment. In recent years, ecotourism is gradually hot, and sewage treatment has begun to draw close to ecological treatment (natural biological treatment). The main limitations of natural biological treatment are the large area and the surrounding environment is easy to deteriorate. Mountain scenic spots have a broad scope and good vegetation conditions, which are suitable for ecological treatment.
(2) Equipment type selection:
1) The integrated equipment has the advantages of high processing efficiency, low energy consumption, low mud production, convenient management and small floor area.
2) The establishment of the primary and final sedimentation tank can operate with low oxygen; the adsorption capacity of short generation microorganisms can reduce the aeration strength.
3) Bioaerobic fluidizer has good treatment effect and less footprint; good mixing performance, fast mass transfer rate, large biomass and high organic load; can control the excessive growth of biofilm thickness and maintain high biofilm activity in circulating fluidized bed; small carrier loss, good fluidized performance; high oxygen transfer efficiency and good water quality.
4) Sludge is digested by itself, and the remaining sludge is less. Mud is discharged several times a year, saving a huge cost of sludge treatment.
To sum up, the integrated sewage treatment technology of Zhongqi Qizhi foreign trade tourist attractions is advanced, with good treatment effect, low land occupation index, low operation cost and convenient management.
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