The job content in the planning includes (1) On-site check and filing of operation regulation compliance for 21 Dioxin emission source plants; (2) check and filing of declared data and test report for 116 Dioxin emission source, and supervision on inspection, regular intervals, improvement and application for operation license of 15 plants; (3) Dioxin inspection of 8 drain pipes; (4) Inspection on heavy metal emission characteristics of 4 key industries; (5) Inspection on pipe PM2.5 emission of 3 key industries; (6) Dioxin concentration monitoring of intensive 2-quarter pollution source area and 3-quarter EPA test station Taoyuan peasants and workers; (7) Odor source verification in Haihu Kengkou Industrial Zone in Luzhu District; (8) VOC pollution map establishment in Guanyin Industrial Zone; (9) Manufacture procedures of three copper sludge treatment plants and pipe Dioxin; (10) Assisted in analyzing solvent raw materials of Hongyu Enterprise CO., LTD, Lioho Machine works, Ltd. and Chun Yuan Steel Industry Co., Ltd Taiwan, analyzing VOC contents, PM2.5 diffusion and simulation work of Linkou Power Plant, and ambient air pollutant concentrations of 26 samples after fire if Chin Poon No.3 plant and Qingyi Company; (11) establishment of air pollution site strain standard job program.
This planning audits 116 test reports, test plans and other relevant data of Dioxin emission sources for pipes in Taoyuan City, executes on-site supervision of 15 Dioxin emission sources. Only Rihuan Company is required for equipment maintenance and resampling due to failure to meet sampling specifications because of equipment damage of the test company.
Check 21 Dioxin emission sources. Inventory work includes inspection on feed quantity of Dioxin emission sources for the tube manufacturers, operation of incineration equipment, operating condition of pollution control equipment, and sampling facility conditions with scientific instrument, thus effectively controlling operation conditions of control equipment in various plants. For 6 noncompliance plants, provide necessary assistance and follow improved integrity.
Conduct inspection on Dioxin emission sources for 8 tubes, and confirm that Dioxin has obvious decrement benefits after pollution source and control equipment improvement of Lying Environmental Technology protection and Super Max Engineering; know well that whether there is high concentration of Dioxin during sludge combustion of Lipeng Yangmei Plant; If Lisheng Company is full operation, emission concentration will be multiplied
Based on calculation of total annual feeds for Dioxin emission sources in 2018, annual emission of large incinerators was 0.044g-TEQ/year, annual emission of medium incinerator was 0.008 g-TEQ/year, annual emission of small incinerator was 0.254g-TEQ/year, annual emission of electric-arc furnace was 2.498g-TEQ/year, annual emission of auxiliary fuels - waste liquor was 0.005 g-TEQ/year, annual emission of auxiliary fuels – sludge was 0.040g-TEQ/year, annual emission of auxiliary fuels –bits of wood was 0.101g-TEQ/year, annual emission of auxiliary fuels –water-coal-slurry was 0.061g-TEQ/year, annual emission of boiler power generating or steam and electric coal-fired boilers was 0.425g-TEQ/year, annual emission of crematorium was 0.00006 g-TEQ/year, annual emission of secondary copper smelting was 0.169g-TEQ/year, annual emission of secondary smelting of aluminum and other metals was 0.005 g-TEQ/year, and annual emission of processing industry was 0.004g-TEQ/year. Total emission at 2018 was 3.614g-TEQ/year, which accounted for 1/14 of annual Dioxin emission in 2016 evaluated by EPA (52.1g-TEQ/year).
Completed Dioxin detection survey of ambient air in three sampling sites (Datan power plant office building, Guanyin District Shulin primary School, and Taoyuan agricultural and industrial monitoring station). At June 2018, conducted monitoring in Taoyuan agricultural and industrial monitoring station with concentration of 0.014pg-TEQ/Nm3; on August 3, 2018, average concentration of sampling sites is 0.039pg TEQ/Nm3, and range is 0.024 ~ 0.052 pg TEQ/Nm3; on November 3, 2018, average concentration of sampling sites is 0.019pg TEQ/Nm3, and range is 0.013~0.023pg TEQ/Nm3, and monitored concentration values of Datan power plant office building was maximum; monitoring value of Guanyin industrial park was higher than other cities; monitored concentration is close to Dioxin monitoring values of ambient air over years in northern areas; monitored value of 3 sampling sites is lower than 0.6pg-TEQ/Nm3- average value for base year of Dioxin environmental quality of ambient air.
So far, the planning has investigated emission performance of combustion source PM2.5 for gas boiler, incinerator, oil burning boiler and coal-fired boiler; for incinerators, conduct investigation on different types of boilers, and conduct investigation on oil types and control equipment based on subdivision of oil burning boilers; for coal-fired boilers, conduct investigation on control equipment of different types; based on emission results of FPM2.5 and CPM2.5, emission concentration of gas boilers is low and stable, and emission concentration of most samples is mainly FPM; for the incinerator, the boiler is larger, starting and ending boilers is fewer, combustion condition is more stable, and emission concentration is lower; based on emission investigation of oil burning boiler PM2.5, current FPM concentration is as follows: heavy oil boiler without control equipment = heavy oil boiler of washing tower > heavy oil boiler with the cyclone separator > diesel boiler for; CPM concentration is as follows: heavy the control equipment without oil boiler>boiler with the cyclone separator>heavy oil boiler of washing tower >diesel boiler. The washing tower can only remove 5 acid and alkaline of about 60%~70%, and there is still a large number of precursor gas which causes FPM and CPM. The cyclone separator’s removal efficiency of PM2.5 is limited, but the oil burning boiler installed the control equipment still has a certain ability to remove PM2.5.
Based on PM2.5 emission coefficient data for setting machine of printing and dyeing industry, PM2.5emission for1kg-setting is 3.66g. For Qisheng industrial, if annual operation of 300 days with 24 hours a day, usage amount of setting every hour is 11.25 kg, and annual emission of PM2.5is 296 kg. There are about 180 printing and dyeing enterprises in Taoyuan City, and annual emission of PM2.5 for the setting machine is 50 tons.
According to investigation on the industry with high Dioxin pollution potential – processing and air pollution operation conditions of copper processing plant, after Jiding quench tower outlet entering bag collector by gas duct with length of 100 meters, quality concentration of PCDD/Fs is increased; if long tube has left precursors, PCDD/Fs will be promoted to be re-composed, and removal efficiency of bronze tripod control equipment will be about 31.3%; removal efficiency of the bronze tripod control equipment for PCDD/Fs quality concentration is 99.9%; quality concentration results of rotary kiln and copper smelting furnace cyclone dust collector PCDD/Fs point out that the copper smelting furnace is beneficial to generating PCDD/Fs, particle concentration is high, and flue gas temperature is 240℃, close to temperature window (250-450℃) generated by PCDD/Fs.
During implementation of program, assisted in analyzing solvents raw materials of source of pollution for Hongyu Enterprise CO., LTD, Lioho Machine works, Ltd. and Chun Yuan Steel Industry Co., Ltd Taiwan to analyze VOC contents, and assisted in confirming declaration and inspection of air pollution charges and pollution source tracking. After Linkou Power Plant PM2.5 diffusion simulation work, fire of No.3 plant of Chin Poon Company and Qingyi Company, conduct monitoringon ambient air pollutant concentration, and assisted in confirming treatment efficiency of waste gas incinerator for Ag Film Technology Co., Ltd..
Assist in standard operating procedures establishment on the air pollution site, which benefits judgment mechanism of air pollution starting after disasters, integrates all processes related to air pollution events, and establishes standard operation procedure, thus collecting evidence of events and achieving complete records, confirming air quality monitoring and rescue operation, and effectively treating accidents.