A-Hubei Longsheng Sihai New Materials Co., Ltd. Environmental Impact Secondary Announcement of the Production Project of Silicone Series Products
In accordance with the relevant provisions of the "Environmental Impact Assessment Law of the People's Republic of China", the State Council Order No. 682 "Decision of the State Council on Amending the Regulations on Environmental Protection Management of Construction Projects" and the State Environmental Protection Administration Huanfa 2006 [No. In accordance with the requirements of the Interim Measures for Participation, the relevant information of the project is now publicized as follows:
1. Main Contents of Environmental Impact Assessment of Construction Projects
1.1 Project Overview
Hubei Longsheng Sihai New Materials Co., Ltd. was formerly known as Hubei Zaoyang Sihai Chemical Co., Ltd. Hubei Zaoyang Sihai Chemical Co., Ltd. was established in 1995 with a registered capital of 10 million yuan. It is mainly engaged in the research and development, production and sales of organosilicon fine chemicals and special surfactant products. With the company's development and the requirements of safety and environmental protection policies, the company's original site has no room for expansion. In view of this, with the support of Zaoyang Municipal Government, Hubei Longsheng Sihai New Materials Co., Ltd. purchased 60,319.65 square meters of land in Zaoyang Chemical Industrial Park in 2017, and invested 100 million yuan to build a production project of silicone series products. After the completion of the project, the annual output of 20,000 tons of silicone products includes 7,000t/a of silicone resin (50% content, including 5,000t/a of methyl silicone resin, 2,000t/a of phenyl silicone resin), 2,000t/a of silicone oil, and 2,000t/a of silicone. 6000t/a (content 60%), silicone surfactant 5000t/a (content 10%-50%, including emulsion defoamer 4000t/a, mineral oil defoamer 1000t/a). In addition, the annual output of by-product ethanol is 2173t/a and calcium chloride is 7100t/a.
1.2 Industrial Policy Compliance
"Industrial Structure Adjustment Guidance Catalog" (2011 edition) and Order No. 21 of the National Development and Reform Commission of the People's Republic of China "Decision of the National Development and Reform Commission on Amending the "Industrial Structure Adjustment Guidance Catalog (2011 edition)" (2011 edition) Effective from May 1, 2013) consists of three categories of encouragement, restriction and elimination. Allowed categories are not included in the "Guiding Catalogue for Industrial Structure Adjustment".
This project produces organosilicon series products such as organosilicon resins, silicone oils, organosilicones, surfactants, etc., which belong to the encouraged categories in the "Industrial Structure Adjustment Guidance Catalogue": 11. Petrochemical Chemicals 15 Phenylchlorosilane, Vinylchlorosilane, etc. Silicone monomer, phenyl silicone oil, amino silicone oil, polyether modified silicone oil, etc., high-performance rubber and hybrid materials such as phenyl silicone rubber and phenylene silicone rubber, high-performance resin such as methyl phenyl silicone resin, three Ethoxysilane and other series of high-efficiency coupling agents.
Therefore, this project complies with the relevant provisions of the national industrial policy.
1.3 Planning compliance analysis
The production project of silicone series products of Hubei Longsheng Sihai New Materials Co., Ltd. is located in Zaoyang City Chemical Industrial Park. The project land has obtained the location map of the south side of Taoyuan Road and the west side of Xihuan 4th Road in Zaoyang City Chemical Industry Park. The nature of the land use It is industrial land and meets the requirements of land use planning.
According to the notice on the issuance and implementation of the Catalogue of Restricted Land Use Projects (2012 Edition) and the Prohibited Land Use Project Catalogue (2012 Edition), this project is not included in the Restricted Land Use Catalogue and Prohibited Land Use Catalogue in the notice. Regulation.
1.4 Conformity analysis of "three lines and one order" control requirements
This project complies with the "Hubei Province Ecological Protection Red Line Management Measures (Trial)", the bottom line of environmental quality, the online resource utilization, the national and local industrial policies and the requirements of the "Draft Negative List for Market Access".
1.5 Analysis of Engineering Influencing Factors
(1) Wastewater pollution sources
The wastewater of this project includes production wastewater, domestic wastewater and initial rainwater.
The total discharge of process wastewater in this project is 25718.358t/a, the water ring vacuum pump replacement wastewater is 480t/a, the workshop floor washing wastewater is 2025t/a, the equipment cleaning wastewater is 228.6t/a, and the boiler room soft water The concentrated water produced by the preparation system is 1813t/a, the boiler sewage (concentrated water) is 4574t/a, the domestic sewage discharge is 3060t/a, and the annual output of initial rainwater is 5190t/a. The wastewater is treated by the "hydrolysis acidification + biological oxidation + filtration" sewage treatment station in the plant, intercepted to the sewage pipe network in the park, and then discharged into the Shahe River (Zaoyang City Section) after reaching the standard of Zaoyang City Second Sewage Treatment Plant.
(2) Source of exhaust gas pollution
The waste gas during the operation period of the project mainly includes process waste gas, breathing waste gas of storage tank size, combustion waste gas of boiler workshop, malodorous gas of sewage treatment station, canteen oil fume and combustion waste gas.
①Process waste gas
According to engineering analysis, the organized emission of non-methane total hydrocarbons (including toluene) in the process waste gas is 0.136t/a, the organized emission of toluene is 0.1t/a, and the organized emission of hydrogen chloride is 0.125t/a.
The fugitive emission of non-methane total hydrocarbons (including toluene) is 0.04t/a.
②Hydrochloric acid mist
According to the engineering analysis, the organized emission of hydrochloric acid mist is 0.0016t/a, and the unorganized emission is 0.001t/a.
③Concentrated waste gas
According to the engineering analysis, the SO2 emission of the fuel combustion exhaust gas in the calcium chloride concentration process is 0.032t/a, the NOx emission is 0.15t/a, and the soot emission is 0.019t/a.
④Drying and dehydrating waste gas
According to the engineering analysis, the exhaust gas SO2 emission of the calcium chloride drying and dehydration process is 0.048t/a, the NOx emission is 0.225t/a, and the smoke and dust emission is 0.18t/a.
⑤Boiler combustion exhaust gas
According to the engineering analysis, the SO2 emission of the fuel combustion exhaust gas in the boiler room is 0.24t/a, the NOx emission is 1.12t/a, and the soot emission is 0.14t/a.
⑥ Tank size breathing exhaust gas
According to engineering analysis, the emission of large breathing VOCs (including toluene) in the storage tank is 0.038t/a, and the emission of toluene is 0.003t/a; the emission of small breathing VOCs (including toluene) in the storage tank is 0.523t/a, and the emission of toluene is 0.523t/a. is 0.053t/a.
⑦ Canteen oil fume and combustion exhaust gas
According to the engineering analysis, the canteen's oil fume emission is 0.014t/a, and the emission concentration is 1.62mg/m3.
(3) Noise pollution sources
The main noise sources of this project are pumps, fans, cooling towers, air compressors, nitrogen generators, etc., and the source intensity is between 75-90dB(A).
(4) Analysis of solid waste pollution sources
The solid wastes during the operation period of this project are mainly: process waste residue, waste ion exchange resin, waste heat transfer oil, sewage treatment station sludge, waste activated carbon, domestic waste, etc.
According to engineering analysis, the amount of filter residue [HW13(265-103-13)] produced in the production process of silicone resin, organic silica gel and silicone surfactant is 90.76t/a, waste activated carbon [HW13(265-103-13)] The production amount is 12t/a; the production amount of waste ion exchange resin [HW13(265-103-13)] produced by pure water preparation is 2t/a; the average production amount of waste heat transfer oil [HW08(900-249-08)] is about The amount of sludge produced in the sewage treatment station is 72t/a; the amount of waste activated carbon [HW49 (900-041-49)] is 174t/a; the domestic waste is 22.5t/a.
1.6 Evaluation of the current situation of the environment
(1) Status Quo of Ambient Air Quality
The concentrations of SO2, NO2, and TSP in the project area meet the requirements of the second-class area environmental quality standard of "Ambient Air Quality Standard" (GB3095-2012), and NH3, H2S, toluene, and TVOC meet the "Technical Guidelines for Environmental Impact Assessment - Atmospheric Environment" (HJ2 .2-2018) Appendix D Table D.1 standard limit requirements, the ambient air quality in the area where the project is located is good.
(2) Current status of surface water quality
During the monitoring period, the monitoring results of pH, TP and BOD5 of Shahe water body all met the requirements of Class III water body standards in the "Environmental Quality Standard for Surface Water" (GB3838-2002), but COD and ammonia nitrogen exceeded the "Environmental Quality Standard for Surface Water" (GB3838-2002) III Water-like standard requirements. The reason for exceeding the standard is mainly due to the living pollution of surrounding farmers and the impact of non-point source pollution caused by the application of chemical fertilizers on farmland. The wastewater of this project will be discharged into the Shahe River after being treated by the sewage treatment station in the factory area, which will not increase the water quality load of the Shahe River.
(3) Status Quo of Groundwater Environmental Quality
Except for the nitrate index in Shuangyan Village, the groundwater quality of each monitoring point exceeds the standard, and all the water quality indicators of the other monitoring points meet the requirements of Class III standard of "Groundwater Quality Standard" (GB/T 14848-93), and the groundwater quality is relatively good.
(4) Status Quo of Acoustic Environment Quality
The acoustic environment quality of the monitoring points of each field boundary meets the Class 3 standards in the "Acoustic Environment Quality Standard" (GB3096-2008); the noise of sensitive points meets the Class 2 area standards in the "Acoustic Environment Quality Standard" (GB3096-2008), and the regional acoustic environment The quality status is good.
(5) Status quo of soil environmental quality
The soil environmental quality of the project land and the region meets the requirements for the screening value limit of the second type of land use standard in Table 1 of the "Soil Environmental Quality Construction Land Soil Pollution Risk Management and Control Standards" (GB36600-2018), and the soil environmental quality is good.
1.7 Pollution prevention and control measures
The project will strictly implement sewage diversion, rain and sewage diversion, and sewage diversion.
The wastewater of this project is treated by the "hydrolysis acidification + biological oxidation + filtration" sewage treatment station in the plant area, intercepted to the sewage pipe network in the park, and then discharged into the Shahe River (Zaoyang City Section) after reaching the standard of Zaoyang City Second Sewage Treatment Plant. There is no obvious impact on the water quality of the Shahe River.
(2) Exhaust gas
The hydrogen chloride produced in the organic silicone resin-hydrolysis and organic silica gel-hydrolysis processes is discharged through a 20-meter exhaust pipe (1#) after being absorbed by the three-stage falling film. ) Table 5 and Table 9 requirements.
Silicone resin-distillation, polymerization, organic silica gel-distillation, polymerization, silicone oil-delow, silicone surfactant (silicon paste production)-non-methane total hydrocarbons produced in the de-low process are condensed at each waste gas generation point (two-stage water cooling) The non-condensable gas generated after the first-stage -10℃ cryogenic temperature is collected by the pipeline (due to the direct pipeline collection, the collection efficiency reaches 99.9%), and after the two-stage -10℃ ice-water condensation + activated carbon adsorption treatment, the collection efficiency is 20 meters away. Exhaust pipe (2#) discharge, the exhaust gas emission concentration meets the requirements of Table 5 and Table 9 of "Synthetic Resin Industrial Pollutant Emission Standard" (GB31572-2015).
The hydrogen chloride produced in the calcium chloride liquid preparation process is treated by the acid mist absorption tower and then discharged through a 20-meter exhaust pipe (3#). 9 requirements.
The calcium chloride concentration process burns clean energy natural gas, and the combustion exhaust gas is discharged through a 20-meter exhaust pipe (4#). The calcium chloride drying and dehydration process uses clean energy natural gas, and the dust is discharged from a 20-meter exhaust pipe (5#) after being treated by a cyclone dust collector + a wet dust collector.
The boiler room burns clean energy natural gas, and the combustion exhaust gas is discharged through a 20-meter exhaust pipe (6#).
After the large breathing exhaust gas of the storage tank is collected by the one-way valve (due to the direct pipeline collection, the collection efficiency reaches 99.9%), it is discharged from the 20-meter exhaust pipe (7#) after being condensed by two-stage -10°C ice water + activated carbon adsorption treatment. The emission concentration meets the standard limit requirements in Table 2 and Table 5 of the "Volatile Organic Compound Emission Control Standard for Industrial Enterprises" (DB12/524-2014).
The canteen fuel uses clean energy natural gas, and the oil fume is discharged after being treated by the oil fume purification device. The oil fume emission concentration meets the relevant requirements of the "Food Fume Emission Standard for the Catering Industry (Trial)" (GB18483-2001).
In summary, the exhaust gas during the operation period of the project has no obvious impact on the surrounding ambient air.
The noise source of this project is mainly equipment noise in the production process. First, low-noise equipment should be selected, and then appropriate noise shielding measures should be taken, such as installing vibration-damping foundations, setting up sound insulation rooms, and installing mufflers. maintenance and maintenance to reduce the increase in noise caused by abnormal operation of the equipment. From the prediction results, it can be seen that the noise at the boundary of the project during the operation period can meet the requirements of Category 3 standards in the "Emission Standard for Environmental Noise at the Boundary of Industrial Enterprises" (GB12348-2008), and the acoustic environment quality of the environmentally sensitive points can meet the "Acoustic Environment Quality Standard". Class 2 standards require that there will be no significant impact on the acoustic environment function of the area.
(4) Solid waste
The solid waste generated by this project is mainly divided into hazardous waste, general industrial solid waste and domestic waste.
Hazardous wastes mainly include: process waste residue, waste ion exchange resin, waste heat transfer oil, waste activated carbon; special containers for hazardous waste must be covered and sealed, and effective sealing methods should be used to make the packaging or container tightly sealed, Strictly, establish a monthly statistical registration, the registration content is the date, production department, quantity or weight, disposal situation and the signature of the relevant personnel, and keep the record for future reference, and then hand it over to the unit with relevant processing qualifications for processing.
General solid waste is mainly sludge from sewage treatment station. After the sludge is dehydrated, it is handed over to the sanitation department for unified removal.
After sorting and collecting the domestic waste of employees, the sanitation department will dispose of it uniformly.
Through the above measures, the solid waste generated by the project operation has little impact on the environment.
1.8 General conclusions
The production project of silicone series products of Hubei Longsheng Sihai New Materials Co., Ltd. conforms to the national industrial policy and comprehensive resource utilization policy. The construction of the project conforms to the requirements of the overall urban planning of Zaoyang City, and the project conforms to the requirements of clean production. The construction of the project has a positive effect on the development of the regional society and economy, and is conducive to promoting the coordinated development of the regional society, economy and environment. On the basis of the practical implementation of the project feasibility study and various pollution prevention and control measures proposed in this evaluation, the pollutants generated by the project during the operation period can be discharged up to the standard or be disposed of safely, and the impact of the project on the surrounding environment is within the acceptable range. Inside. Therefore, this EIA believes that the project construction is feasible from the perspective of environmental protection under the condition of practical implementation of various pollution prevention and control measures and environmental management requirements, and strict implementation of the environmental protection "three simultaneous" system.
2. Name and contact information of construction unit
Construction unit: Hubei Longsheng Sihai New Materials Co., Ltd.
Address: Zaoyang Chemical Industrial Park
Contact person and telephone: Mr. Yang 13972089928
3. The name and contact information of the environmental impact assessment agency undertaking the environmental impact assessment
Evaluation unit: Hubei Wanrui Environmental Protection Co., Ltd.
Address: No. 17-2, Chengguan Jianshe Road, Nanzhang County, Hubei Province
Contact: Li Gong
4. Internet link to the public opinion form
Internet link to the public comment form: www.hbxshhg.com/companyfile/3.html
Online link of the draft for comments: www.hbxshhg.com/companyfile/4.html
V. Ways and Channels for Public Opinions
After this information announcement, the public can express their opinions on the construction of the project and the EIA work by sending emails, telephone calls, faxes, letters or interviews to the designated address. Please provide detailed contact information as much as possible while expressing opinions, so that we can timely feedback relevant information to you.
6. The starting and ending time of public comments
10 working days from the announcement, please reflect your opinions or suggestions to the construction unit or the EIA unit through the above methods after the announcement.