COC, or perhaps more accurately, allowable COC, varies from tower to tower depending upon many factors including makeup water chemistry, heat load, effectiveness of chemical treatment programs, and possible restrictions on water discharge quality or quantity. In arid locations, COC may need to be ...
The TMDL calculation is the sum of the point sources allowed (waste load allocation (WLA)), the nonpoint sources (load allocation (LA)), and an allocation for uncertainty (margin of safety (MOS)). Usually the MOS is taken to be 10% of the total allowable TMDL allocation if little is ...
Describe the preliminary calculation results of stability,stresses and deformations of main structures.Describe the calculation condition,loads and load combination,approach and preliminary calculation results for tunnel lining.For important projects or shape-complicated structures,special study should be carried...
Height identification of water-permeable fractured zone (WPFZ) is one of the decisive influence factors for mining safety, especially in some specific conditions, such as mining under aquifer. In order to demonstrate the formation process of the WPFZ, th
4). The design alternatives (Ai, with index i = 1…m, A0 is the reference alternative and m is the number of alternatives) include the sub-surface construction and safety measures to reduce the effect of the leakage. Fig. 4 Calculation of pore pressure and effective stress from ...
where Cirepresents the concentration of each investigated HM, whereas (HALi) refers to the higher allowable limits for each element (i)th. According to Withanachchi68, the Heavy Metal Index (HMI) is divided into six scales: There are five categories of contamination: very clean (HMI < ...
Water loss refers to the combination of leakage and wastage from the distribution network, including apparent losses (such as meter errors and unauthorized consumption) and real losses (such as leakage from transmission mains and service pipes). ...
The use of Drinking Water specifications establishes a reasonable set of maximum allowable levels of chemical and microbiological contaminants with which a water purification system will be challenged. As seasonal variations in the quality attributes of the Drinking Water supply can occur, due ...
The impeller is processed with numerical control equipment, which ensures that the two impellers can maintain a certain minimum clearance no matter where the two impellers rotate under the condition of constant center distance, so as to ensure that the gas leakage is within the ...
The ideal limit for chloride in drinking water is 250 mg/L and the allowable limit is 1000 mg/L (World Health Organization, 2011). The higher chloride concentration in the southeastern part (322 mg/L) may be due to the wasted leakage of yellow stone (Fig. 1g), or it may be due to...