1. The general...1

2. Construction project profiles and engineering analysis...12

3. The project is located environment situation...27

4. Environment status quo survey...31

5. The environmental impact prediction and evaluation...41

6. Pollution prevention and control measures feasibility analysis...71

7. Environmental technology economic profit and loss analysis...76

8. Clean production...78

9. Total amount control analysis...81

10. The public survey...85

11. The environment management system recommended...89

12. The environment risk assessment...91

13. The conclusion and Suggestions...96

1. The general

1.1The project origin

With the continuous improvement of people's living, more and more is also high to the requirement of living environment, thus leading the decorative brick and the development of sanitary ware and other industries, has formed a huge market, XXX company, founded in 2003, has been put into operation, the fuel for heavy oil and diesel.Project fuel prices are greatly influenced by the international petroleum market, the world has the fuel shortage situation, to use as a major manufacturer of fuel, fuel oil shock, in addition to the problem of supply, fuel prices sharply, lead to project item cost than the first half of the year rose more than 54.25%, make the enterprise be load.In the long run, the international market oil price trend, which brings the product cost, and our country's coal reserves in the world the first, with the continuous improvement of mining technology, coal prices falling, replace oil with coal as fuel, will be the development of the enterprise for a long time.But with coal as fuel is directly will bring greater than the environmental problems, so this project will coal as fuel indirectly, from coal to gas will solve this problem.Tangshan branch designed for industrial control technology co., LTD., two sections of gas producer complete sets of equipment for many national patent technology, and to the national promotion project, XXX company decided to adopt the gas generating equipment, change the energy structure.

Environmental protection of the environment

1, to the project as the center, 2000 m radius evaluation range air quality to meet the national environmental air quality standard (GB3095-1996) secondary standard.

2, the project after wastewater treatment by the outfall into big YanHe, ensure the wastewater into the entrance of the big YanHe to 2000 m of the downstream river water quality reach the surface water environment quality standard "(GB3838-2002) Ⅲ class standard.

3, to 100 m on project boundaries within the scope of the acoustic environment to achieve city regional environmental noise standards (GB3096-93) 3 class standard.

Evaluation standard

Environmental quality standards

1, the national ambient air quality standard (GB3095-1996) secondary standard and the state environmental protection administration released on the environmental air quality standard (GB3095-1996) modified single notice;

2, the national surface water environment quality standard (GB3838-2002) Ⅲ class standard;

3, national city regional environmental noise standards (GB3096-93) 3 class standard.

Emission standards

1, the guangdong province local standards "atmospheric pollutant emission limit" (DB44/27-2001), the second session of the secondary standard boiler maximum allowable pollutant discharge limits;

2, guangdong local standards "water pollutant discharge limits (DB44/26-2001) was the second time level standards;

3, national "odorous pollutants emission standard" (GB14554-93) secondary new standards;

4, country "standard of noise at boundary of industrial enterprises" (GB12348-90) class III standard.

Evaluation rank

1, the exhaust gas: the objective evaluation of atmospheric level to level 3.

2, waste water, according to the project of displacement, the characteristics of the wastewater pollutants and big YanHe water environment function requirements and the provisions of the evaluation of technical guidance, only environmental impact analysis was carried out on the water environment.

3, noise: for industrial zone, where the project is located, according to the requirement of the environmental impact assessment technical guideline, determine the environmental impact analysis of acoustic environment.

4, solid waste: environmental impact analysis.

The evaluation scope

1, scope of water environment evaluation for wastewater into big YanHe 300 meters at the entrance to the upstream to the downstream reach of 2000 m on the scope of evaluation.

2, in order to the factory as the center, radius of 2000 meters.

3, scope of acoustic environment evaluation along the project construction site boundary 1 meter outside the envelope.

4 the evaluation scope, solid waste is near the factory.

2. Construction project profiles and engineering analysis

Construction project overview

1, the project name: XXX company mixed gas station

2, the nature of the project, the technical

3, construction site:

4, the construction unit: tangshan branch for industrial control technology co., LTD

5, construction scale, covers an area of 5000 m2, building area of 1500 m2.Gas production cold water purification 1.4 x 108 m3, coal tar by-products () 1000 t.

6, fuel and water and electricity:

This project adopts the high quality coal as raw material, USES about 40000 t (including 1500 t used for boiler), power consumption is about 5.62 x 106 kw, h;Water consumption of about 25000 t and 23000 industrial water t, domestic water 2000 t.Water is mainly provided by the department of the local water supply, water balance figure as shown in figure 2-1:

7, the main equipment

The main equipment list

Engineering analysis

Main production link to see the table below.

This project main pollutant source and to schedule

Measures to prevent and control pollution

1.Atmospheric pollution control measures

This project intends to take the measures of air pollutants in main consideration to affect gas pollutants in the quality of governance and the governance of pollutant affecting the quality of atmospheric environment around.Governance process is divided into gas pollutant, vibration sieve dust control technology and the boiler exhaust gas treatment process.

The gas pollutant treatment process

The objective of the gas in the upper because without oxidation layer, containing relatively high concentrations of tar, has certain influence in the quality of the gas, and the temperature of the gas in the upper between 110 ~ 120 ℃, the period of the gas temperature is between 200 ~ 300 ℃, and cannot be used directly, this project use electric catching focal (electrostatic catching tar) and light esp (electrostatic collector light oil) to remove tar in the gas, using the cyclone dust removal, cooler between air cooling and reduce the gas temperature, tar after collection for sale.

The gas pollutant treatment process

Vibrating screen dust control technology

This project with shaking sieve is mainly in order to screen to 25 mm below the pulverized coal, screen out the process produces a large number of large size dust, this project adopts the cloth bag dust removal.

Vibrating screen dust control technology

Boiler exhaust gas treatment process

The boiler exhaust gas containing sulfur dioxide and fuel dust and other pollutants, this project adopts the water film dust collector to the governance of tail gas, adding lime to spray liquid, can achieve the purpose of desulphurization and dust removal at the same time.

figure2-6Boiler flue gas treatment technology

Water pollution governance process

For the project is targeted to take different wastewater treatment processes: cooler waste water after cooling tower cooling between direct recycling;Ground after precipitation treatment for back washing wastewater polishing brick production working procedure, phenol after collection stored in phenol liquid pool, after phenol liquid pool precipitation supernatant fluid recycling, lower level of phenol solution into phenol evaporator, utilizing gas after waste heat evaporating, back into the drum as steam used for gas generator;Boiler flue gas treatment wastewater after settling basin treatment recycle, recycle after a certain period of time to enter dongpeng ceramic sewage treatment station, after neutralization and precipitation treatment used for polishing brick production processes;Only sewage, daily waste discharged after tertiary septic tank treatment.

Noise pollution prevention and control measures

The noise source of this project is mainly for the production process of all kinds of production machinery, such as all kinds of fans, pumps, and the noise of the forklift, the mechanical operation of the vibrating screen and so on production, moderate noise intensity, noise source is located in the middle of the plant, the influence of the object is mainly shop workers, to effectively reduce the noise impact on the environment, this project intends to adopt sound insulation, noise elimination and sound absorption, etc.

Solid waste disposal measures

This project no hazardous waste generated, classification of solid waste treatment, water film dust catcher (boiler) dust removal waste landfill treatment, coal cinder after collection take-away, tar slag quantity is less, hazardous waste, the qualified unit processing, employee life after garbage collection by the sanitation of the ministry of public security processing.

Sewage to

This project sewage after treatment into the first ceramic industrial city sewage pipe network, and into the big YanHe, between cooler after cooling completely recycled wastewater, phenol solution after phenol evaporator evaporation used as steam back in the producer gas generator, the ground flush waste water after being treated for polishing brick production working procedure, the boiler exhaust gas treatment after sedimentation pond treatment wastewater recycling, recycling and a certain number of times the back into the sewage treatment station, after neutralization and precipitation treatment used for polishing brick production process is not outside;Tar after collection to sell;Boiler exhaust gas after treatment standard by 30 m high chimney air emissions, dust produced by the vibration sieve exhaust gas emissions through a bag dust removal after concentration, gas station process exhaust volume is not large, pollutants concentration is not high, belongs to the unorganized emissions;Water film precipitator dust removal waste landfill treatment (boiler), tar residue/qualified units, employees of living garbage in the sanitation department processing, coal recovery after delivery.

3. Environmental situation, where the project is located

3.2The natural environment

Source pool town economic characteristics of both the mountains and plains, underground contain rich mineral resources, according to the department of geological exploration, the town kaolin reserves of 3500 x 104 t, for over 50 years, iron ore reserves of 5000 x 104 t, rare earth reserves is 500 x 104 t, in addition, there are potassium feldspar, sodium feldspar, crystal stone, limestone, ceramic sand resources, etc.Domestic high grade of these resources, not only sells in distant markets each place, but also exported to Japan, Taiwan and other countries and regions.

Highway project close to the qing dynasty Buddha level, clear level of highway is qingyuan Buddha to Buddha traffic arteries, clear Buddha first class road which peak flow of 600 m/h.Qingyuan city industrial zone of the original five villages has now moved to the south building materials sanitary southeast of about 1500 m migrants saemaul undong, a population of about 650 people, industrial areas, some companies have now put into trial production, there are about 2000 employees, with the constant improvement of industrial zone, zone population will increase gradually.

Social environment survey:

Source pool Zhen Town field area of 228 km2, jurisdiction 5 'neighborhood committees, 16 village committees, a total population of 91438 people, including 30154 people in the urban population and rural population of 61284, the town has a paddy field 42000 Chinese acres, 7300 acres of dry field, ponds and water of 3150 mu, 177600 mu.At the end of 2004 the town a total of 109 industrial enterprises, realize the gross national product (GNP) 1.138 billion yuan, including agricultural production value of 224 million yuan, industrial GDP totaled 679 million yuan, the tertiary industry GDP totaled 235 million yuan, fiscal revenue of 49.3 million yuan, rural per capita income 3508 yuan.

3.4The existing main pollution situation around the project

　See table 3-1.

4. Environment present situation investigation

The water environment quality present situation

Big YanHe evaluation period of the source pool of untreated sewage directly discharged into the town and its coastal industrial and agricultural production waste water discharged into the effects of dissolved oxygen, ammonia nitrogen, petroleum, the rest of the various monitoring factors did not exceed national "surface water environment quality standard" (GB3838-2002) class III standard limit.

Atmospheric environmental quality status quo

Three atmospheric monitoring so2, no2 and total suspended particulate matter has not been density than the ambient air quality standard (GB3095-1996), the average density of the secondary standard evaluation index is not greater than 0.5.

Sound environment quality present situation

Eight sound environment monitoring, the noise of the day and night not beyond city regional environmental noise standards (GB3096-93) three kinds of standard limit.

5. Environmental impact prediction and evaluation

The atmospheric environment

After evaluation, treatment under the condition of discharging standard, the project of boiler exhaust gas has little impact on the environment, dust and process waste gas has less impact on the surrounding environment.

Through the comparison and analysis, adopt oil gas generation, the project of atmospheric pollutant emissions, were able to reduce pollution on the surrounding environment, atmospheric environment capacity increases, the scope of the construction of the project is helpful to evaluate the atmospheric environment protection.

The water environment

Between the objective of the waste water from the cooler cooling water, ground flush liquid wastewater, phenol, processing waste gas produced by waste water and domestic sewage.Projects targeted to deal with waste water, cooling water after settling basin treatment recycling is not outside, phenol solution after phenol evaporator evaporation into the drum, used as steam back in producer gas generator, the ground after the washing wastewater collection after precipitation treatment back for polishing brick production working procedure, exhaust gas treatment wastewater recycling and a certain number of times the back into dongpeng ceramic sewage treatment station, after neutralization and precipitation treatment used in the production process, not outside.Only sewage discharge of waste water, sewage treated by three septic tanks and wastewater pollutants concentration significantly decreased after processing, the analysis of this evaluation thought project waste on the environment.

Sound environment

This project noise mainly comes from all kinds of production machinery and coal transportation noise, the project mainly through building block and the sound insulation of walls and green belts, air absorption to reduce noise, through the analysis of this evaluation thought project noise has little impact on the environment.

Solid waste

The project of solid waste is mainly water film dust catcher (boiler) dust removing tar slag, coal cinder, slag and staff living garbage and so on, the tar slag is a hazardous waste (HW11 - pure steam distillation residue).Solid waste to above, the project classification processing, tar slag qualified unit processing, comprehensive utilization of coal cinder after collection to sell to other units, sprinkling water on coal cinder yard on a regular basis to keep the cinder certain humidity, avoid coal dust affect the surrounding environment, built around the coal yards collect rainwater leaching water, set channel rainwater leaching water after settling basin treatment used in the production process, to avoid rainwater leaching water directly into the water body, pollute the water environment;Dust removal of boiler slag after collection landfill treatment;Sanitation departments to deal with household garbage.Solid waste classification processing, the environmental impact is not big.

6. Pollution prevention and control measures feasibility analysis

After the project is operating waste water, waste gas, noise and solid waste generated, the project focus on the waste water and exhaust gas treatment.On gas pollutants in two levels of the electric tar precipitator, the dust on the vibrating screen cloth bag dusting was taken to prevention and control of water film desulfurization dust removal device for the boiler exhaust gas, the liquid phenol using phenol evaporator evaporation back for gas production, after the cooler waste water after cooling tower cooling between direct recycling;Boiler flue gas treatment wastewater recycle after a certain number of times, into the east peng ceramic sewage treatment station, after neutralization and precipitation treatment used in the production process;Sewage discharged after tertiary septic tank treatment.Under normal conditions, the prediction and analysis of the different pollution factor can reach the corresponding environmental quality standards, according to the objective of the construction scale, the environmental protection facilities into more reasonable, think this evaluation project of environmental protection measures from the standpoint of environment, economy, technology, and feasible.

7. Environmental technology economic profit and loss analysis

Project set up to make the enterprise production cost is reduced greatly, reduce the cost is far greater than investment and adverse effects to the environment, and after the completion of the discharge of atmospheric pollutants total amount reduced, exist positive impact to the environment, shows that the construction of the project will be a good environmental and economic benefits.From the perspective of environmental economics, therefore, the project is feasible.

Cleaner production in 8.

The project selection harmless non-pollution raw materials and energy, coal gasification, conforms to our country's energy policy, and use sulfur content less than 0.5% of coal with high quality and advanced water gas production technology, from the source to reduce the discharge of pollutants such as sulfur dioxide and fuel dust, comprehensive utilization of tar, such as phenol fluid recovery is not outside, namely to create economic benefits, and reduce the burden of the water environment.Project adopted the advanced liquid phenol treatment technology, applied in the production of the gas will phenol solution back to protect both the environment and save energy.The project change the energy structure, not only reduce the production cost, and emissions of air pollutants has significantly cut, years of sulfur dioxide emissions by 142.7 t, soot emissions reduce 29.85 t, reduces the project of evaluation of regional atmospheric environmental capacity, to improve the regional atmospheric environmental quality can play a role.Compared with the similar project, the project of cleaner production level belongs to advanced level.

9. Total amount control analysis

The project for the discharge of major pollutants sulfur dioxide and fuel dust, the two will be listed as the project total amount control indicators.Because our country at present the total amount control system is assigned to the capacity of the enterprise, to master its emissions of pollutants by the enterprises themselves, as a result, this report is wrong in this project the xyz company mixed water gas station) emissions of sulfur dioxide and fuel dust separate environmental capacity, divided into the following table lists the emissions of sulfur dioxide and fuel dust to * * co., LTD., the distribution of capacity (sulfur dioxide and soot list only two indicators, other indicators because not characteristics of pollutants in the project, this report is not listed, refer to the environmental impact report form), recommended as the pollutant total amount control target of the company:

table9-1Pollutant discharge total amount control indicators

Public survey on the 10.

According to the result of the public survey, you can see that most of the respondents have a certain understanding, the project is not against the construction of the project.Part of the respondents think that the project construction will affect the local atmospheric environmental quality, and the risk of the construction of the project is a matter of fact, the construction of this project is put forward the following opinions: wind

1, project construction, and operation must be made in real environmental protection measures, to ensure that the pollutant discharging standard, reduce the effect on the surrounding environment.

2, the construction of the project, must be equipped with effective risk prevention measures.

11. The environmental management system

The construction unit of pollution sources monitoring project

Monitoring frequency:

Waste water, such as commissioned monitoring once every quarter monitoring, such as its equipped with laboratory monitoring once a day.

Waste: such as entrust monitoring once every quarter monitoring, such as their own is equipped with laboratory monitoring once a month.

Noise: such as entrust monitoring once every quarter monitoring, such as their own is equipped with laboratory monitoring once a month.

12. The environmental risk assessment

The operation of the project there is a gas leak, fire, explosion and phenol, tar leakage risk thoroughly.Construction units according to risk accident, formulate the corresponding risk prevention measures, implement comprehensive safety management system, drawing up contingency plans at the time of the accident.This evaluation thought to formulate feasible risk prevention measures and emergency.

13. Conclusions and Suggestions

Project is located in industrial park, in accordance with local construction planning, near the Buddha first class road, traffic is very convenient.Factory near didn't find any places of historic interest and cultural landscape, as well as the protection of rare animals and plants published by the state, provinces and cities.Terrain open and conducive to atmospheric pollutants diffusion, according to the report of the project of main pollutant, atmospheric pollutants predicted results, the project management of the normal operation of facilities, under the condition of the pollution factor can reach the atmospheric pollutant emission limits of guangdong province (DB44/27-2001) was the second time the secondary standard discharge, and predictive value of sulfur dioxide and fuel dust achieves the environmental air quality standard (GB3095-1996) secondary standard.According to analyzing the current situation of surface water monitoring results, big river has been YanHe evaluation source pool town of untreated sewage and the coastal industrial and agricultural waste water pollution, but the waste water is not the objective of the main pollution factors.According to the project before and after the change of energy structure of comparative analysis, the objective of the company after the establishment of sulfur dioxide emissions reduction of 142.7 t/y, soot volume cut 29.85 t/y, is helpful for the improvement of the regional atmospheric environment, at the same time, the construction of this project although one-time investment is large, but the recovery period is short of funds, after long-term operation of the company has drastically cut the cost of production, considering comprehensive factors, the project is feasible.

13.2advice

13.2.1 in the project construction process should actively contact the fire department, do a good job in fire control work of the project, to eliminate potential safety problems, ensure the project put into production after the work of production safety.

13.2.2 abide by the "three simultaneity" system, is clear about the construction of pollution control facilities and daily operation management responsibility, will implement the "three simultaneity" system.

13.2.3 perfect operation procedures and operation plan, strengthen staff training, avoid accidents caused by improper operation in production emissions.

13.2.4 strictly implement raw material coal for the quota management system, and avoid the pollution caused by coal powder on the premises and the surrounding area.

13.2.5 implement this project puts forward pollution control measures and Suggestions, continue to improve, improve the production process and pollution control.

13.2.6 do risk accident preventive measures, formulate emergency system, and equipped with corresponding security personnel.

13.2.7 completes the greening of the work.

To sum up, the construction unit strict enforcement of national construction project environmental protection "three systems" at the same time, earnestly implement various measures to prevent and control pollution and the requirements of the eia report put forward and the suggestion, and strengthen the operation and management, pollution control facilities under the premise of guarantee the discharge of pollutants discharging standard, the implementation of clean production management, from the perspective of environmental protection, construction of the project is feasible.