Method for predicting exposure level of organic chemicals in wastewater aerobic treatment system
An organic chemical, aerobic treatment technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of not considering aeration volatilization and other processes
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[0103] Select biphenyl as the chemical to be evaluated, and collect data on 8 basic physical and chemical properties of biphenyl, respectively molecular weight MW=154.21g.mol -1 , vapor pressure P=1261Pa, water-soluble S=7.5mg.L -1 , adsorption coefficient lgK oc =3.27, aerobic biodegradation rate k 5 = 1h -1 , daily discharge of chemicals ERC = 10kg.d -1 .
[0104] Collect or calculate the exposure scene data of the wastewater aerobic biochemical treatment system, see Table 1. The exposure scene parameters of the sewage treatment plant can be obtained by referring to the design parameters and relevant process technical specifications. The volume of each box can be calculated according to the hydraulic retention time, suspended solid concentration, suspended solid density, deposited sludge thickness, and total STP area. The exposure scenario parameters given in this example are a standard, default value.
[0105] Table 1 Exposure scenario data of wastewater aerobic bioch...
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