Recently, the Bureau of Ecology and Environment of Maanshan City issued a public announcement before the approval of the technical renovation project of comprehensive utilization of industrial solid waste in the co-disposal of contaminated soil in cement kilns of Anhui Panjing Cement Co., Ltd.
The announcement shows that Anhui Panjing Cement Co., Ltd. intends to invest 1.5 million yuan in the construction of a technical renovation project for the comprehensive utilization of industrial solid waste from contaminated soil in a cement kiln. The existing clay bin and feeding belt in the plant area were technically reformed, and the existing cement kiln was used to co-dispose and incinerate the solid waste of industrial contaminated soil. The project relies on the existing Phase I 1 # 4500t/d new dry process cement of Anhui Panjing Cement Co., Ltd. Href = "https://price.ccement.com/Price_list-1-s0-e0-p0-c0-k100059-b0. After the completion of the project, the production scale will be 200,000 tons/year of cement kiln co-processing of contaminated soil.".
The full text is as follows:
Contact number: 0555-8357035
supervision phone: 0555-2333844/0555-8358632
Address: Window
of Ecological Environment Bureau, Area A, 3rd Floor, Maanshan Municipal Affairs Service Center Project Name: Anhui Panjing Cement Co., Ltd. Cement Kiln Co-processing Contaminated Soil Industrial Solid Waste Comprehensive Utilization Technical Transformation Project
Construction Location: 0 HT in the factory area of Anhui Panjing Cement Co., Ltd., Hexian Economic Development Zone, Maanshan City, Anhui Province ML0 UNK1 5 Construction unit: Anhui Panjing Cement Co., Ltd. 0 HTML0 UNK1 6 Project overview: Anhui Panjing Cement Co., Ltd. plans to invest 1.5 million yuan to construct the technical transformation project of comprehensive utilization of industrial solid wastes for co-processing of contaminated soil in cement kilns in the plant area, and to carry out technical transformation of the existing clay bin and feeding belt in the plant area. The existing cement kiln is used to co-dispose and incinerate the solid waste of industrial contaminated soil. The project relies on the existing Phase I 1 # 4500t/d new dry process cement clinker production line of Anhui Panjing Cement Co., Ltd. After the completion of this project, the production scale will be 200,000 tons/year of cement kiln co-disposal of contaminated soil. 0 HTML0 UNK1 7 Main Environmental Impacts and Countermeasures and Measures to Prevent or Mitigate Adverse Environmental Impacts: 0 HTML0 UNK1 8 I. Construction Period 0 HTML0 UNK1 9 This project is located in the plant of Anhui Panjing Cement Co., Ltd. in the Economic Development Zone of He County, Maanshan City, and no new land will be added. Only the existing clay bin and feeding belt in the plant area are reconstructed to meet the stockpiling and use requirements of solid waste of industrial contaminated soil, with little impact. Therefore, this assessment mainly focuses on the detailed analysis of environmental impact during the operation period. 0 HTML0 UNK2 0 II. Operation period 0 HTML0 UNK2 1 (1) Waste gas 0 HTML0 UNK2 2 Major environmental impacts: The waste gas generated after the completion and operation of this project mainly includes the waste gas from the cement kiln inlet and the organic waste gas generated during the storage of organic contaminated soil. This project is based on the existing Phase I 1 # 4500t/d clinker cement production line of Anhui Panjing Cement Co., Ltd. After the implementation of the project, the total amount of particulate matter, SO2 and NOx has not changed. Emission of fluoride, hydrogen chloride, mercury and its compounds, thallium + cadmium + lead + arsenic and its compounds (calculated by Tl + Cd + Pb + As), beryllium + chromium + tin + antimony + copper + cobalt + manganese + nickel + vanadium and its compounds (calculated by Be + Cr + Sn + somebody + Cu + Co + Mn + Ni + V), dioxin and non-methane total hydrocarbon pollutants are added after the construction of the Project. 0 HTML0 UNK2 3 Countermeasures and measures: The waste gas at the kiln inlet is discharged through a 90m high chimney (DA037) after being purified by "staged combustion + wet desulfurization + SCR denitration + bag-type dust collector", and the dust removal efficiency of the bag-type dust collector at the kiln inlet can reach more than 99%; Most of NOx and SO2 in the waste gas can be removed by staged combustion, wet desulfurization and SCR denitrification. There is an alkaline environment in the cement kiln. HCl reacts with CaO in the kiln to form CaCl2, which is carried out of the kiln with clinker. More than 97% of HCl will be absorbed by alkaline substances in the kiln, and 3% of chlorine will be discharged in the form of HCl; HF and CaO formed in the burning process of fluorine-containing raw materials and fuels will be solid melted in the clinker, and about 90 ~ 95% of F element will be taken out of the kiln with the clinker; A large number of heavy metals are solidified in the cement clinker, and some of them enter the flue gas. The bag-type dust collector can remove heavy metal particles well, and the removal efficiency is about 99% except for Hg, and the removal efficiency of Hg is about 10%; The modern new dry cement incineration process has great advantages in inhibiting the generation of dioxins. After a series of measures mentioned above, the dioxin pollutants can meet the requirements of 0.0 HTML0 UNK2 4. The moisture content of the contaminated soil in the clay bin is about 20%, and there is almost no dust. The particulate waste gas in the clay bin is not considered in this assessment. The organic waste gas generated during the storage of organic contaminated soil in the clay silo was collected by closed negative pressure (collection efficiency of 90%), and then treated by activated carbon adsorption device. The adsorption effect of activated carbon adsorption device on organic waste gas could reach more than 90%, and the treated organic waste gas could be discharged through a 15 m high exhaust funnel. Therefore, after taking the treatment measures in this assessment report, the waste gas discharged by the project has little impact on the surrounding atmospheric environment. 0 HTML0 UNK2 5 (2) Waste water 0 HTML0 UNK2 6 Main environmental impacts: The water used in this project is mainly domestic water and production water. 0 HTML0 UNK2 7 Countermeasures and Measures: The domestic sewage of this project is collected by the nearby villagers to fertilize the fields after being treated by the septic tank in the plant area. The production water is mainly the washing waste water produced by the washing of transport vehicles, which will be recycled after precipitation and will not be discharged. 0 HTML0 UNK2 8 (3) Noise 0 HTML0 UNK2 9 After noise elimination, foundation shock absorption, plant sound insulation and distance attenuation, the equipment noise of this project meets the standard requirements of Class 2 area in the Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008). 0 HTML0 UNK3 0 (4) Solid waste 0 HTML0 UNK3 1 During the operation of the Project, the solid waste is mainly the dust from the dust remover and domestic waste. 0 HTML0 UNK3 2 The amount of domestic waste remains unchanged, which is collected and disposed of by the local environmental sanitation department; however, the composition of the dust collected by the rotary kiln dust collector changes, which is mixed with clinker and mixed with admixture to grind cement for comprehensive utilization. The kiln dust produced in this project is directly mixed into the clinker and grinded with the admixture to make cement, which is comprehensively utilized and has almost no impact on the external environment. 0 HTML0 UNK3 3 (5) Groundwater 0 HTML0 UNK3 4 According to the nature, generation and discharge of various pollutants in the site and the leakage (including running, emitting, dripping and leaking) of various toxic and harmful raw and auxiliary materials, intermediate materials and products that may enter the groundwater environment through various ways. The plant area is divided into key anti-seepage area, general anti-seepage area and simple anti-seepage area. The key anti-seepage area includes the hazardous waste reservoir. The project relies on the hazardous waste reservoir in the plant area. According to the site survey, the existing hazardous waste reservoir has been subject to key anti-seepage according to the requirements. The general anti-seepage area mainly includes the clay bin and the vehicle washing wastewater sedimentation tank. The vehicle washing wastewater sedimentation tank is the supporting project. At present, the vehicle washing wastewater sedimentation tank has been subject to anti-seepage according to the requirements; The simple anti-seepage area mainly includes the office area and the laboratory. As the supporting project, the simple anti-seepage has been carried out according to the requirements. 0 HTML 0 UNK3 5 After necessary anti-seepage measures are taken for the clay silo of this project in accordance with the requirements of the above relevant standards, the impact on groundwater is very small due to poor permeability. At the same time, a groundwater quality monitoring plan should be formulated, and once groundwater pollution is found, measures should be taken immediately to remedy it and report it to the local ecological environment authorities. 0 HTML0 UNK3 6 (6) Soil 0 HTML0 UNK3 7 The soil pollution sources of this project mainly include heavy metals and dioxins in atmospheric pollutants, and the main pollution way of atmospheric pollutants is atmospheric deposition. 0 HTML0 UNK3 8 According to the engineering analysis of the project, the waste gas produced by the project is normally discharged up to the standard; The flushing wastewater of the project will be recycled in the sedimentation tank after collection and will not be discharged. Under normal conditions, the clay bin will be subject to anti-seepage treatment, which has little impact on the soil, thus reducing the environmental risk of pollutants entering the soil and groundwater at the source. Therefore, under normal conditions, there will be no pollution leakage. All the contaminated soil will be comprehensively utilized or reasonably disposed, which has little impact on the soil.Opinions of the
department concerned: The Administrative Committee of Hexian County Economic and Technological Development Zone in Anhui Province issued a reply to the approval of the project, project code: 2304-340523 -04-01-Notice of the right to 789373
hearing: According to the Administrative License Law of the People's Republic of China, Within five days from the publication, the applicant and interested parties may request a hearing on the approval opinions of the environmental impact assessment documents of the construction project to be made.
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