1.2 standardized remediation of sewage outlets is one of the basic tasks for implementing the total pollutant control plan, with the purpose of promoting pollutant discharge units to strengthen management and pollution control, strengthen environmental supervision and law enforcement, better perform the duties of "three inspections, two adjustments and one charge", and gradually realize scientific and quantitative management of sewage discharge.
1.3 The principle of facilitating sample collection, measurement and monitoring, and daily on-site supervision and inspection should be followed in the standardized remediation of sewage outlets.
1.4 this requirement is applicable to the standardized renovation of the sewage outlets of all sewage units.
Chapter two? Standardized remediation scope of sewage outlet
2. 1 All the outlets (points and sources) of pollutant discharge units that discharge pollutants (waste water, waste gas, solid waste and noise) into the environment need to be regulated.
2.2 The standardized remediation of sewage outlets can be carried out step by step. During the pilot period, the scope of remediation shall not be less than 50% of the units that have collected sewage charges within their jurisdiction, and the following four principles shall be followed (2.3-2.6).
2.3 Give priority to the transformation of sewage outlets, taking into account the transformation of waste gas, solid waste and noise sewage outlets (points and sources).
2.4 focus on remediation of key pollution sources. Sewage outlets listed in national, provincial and municipal key pollutant discharge units shall be rectified first.
2.5 It is mainly to rectify the sewage outlets of 12 pollutants (soot, industrial dust, sulfur dioxide, chemical oxygen consumption, petroleum, cyanide, arsenic, mercury, lead, hexavalent chromium and industrial solid waste) listed in the total control index.
2.6 In order to embody the pilot principle, different types, different industries, different specifications and different subordinate relationships should be selected for sewage outfall remediation.
Chapter three? Technical requirements for standardized remediation of sewage outlets
3. 1 sewage outfalls transformation
3. 1. 1 Reasonably determine the position of the sewage outlet.
3. 1.2 Set sampling points according to Technical Specification for Pollution Source Monitoring. Such as: the general discharge port of the factory, the discharge port of the workshop that discharges Class I pollutants, the inlet and outlet of sewage treatment facilities, etc.
3. 1.3 A standardized flow measurement section shall be set to facilitate the measurement of flow and speed.
3. 1.4 flowmeter is installed in the sewage outlet, which is included in the key renovation.
3. 1.5 generally, flow measuring devices such as triangular weirs, rectangular weirs, and flow measuring tanks or other metering devices can be set at the sewage outlets.
3.2 Reconstruction of waste gas discharge port
3.2. 1 organized waste gas. The quantity, height and leakage of its exhaust pipe were rectified.
3.2.2 The exhaust port shall be provided with a sampling port to facilitate sampling and monitoring. The setting of sampling port shall meet the requirements of Technical Specification for Pollution Source Monitoring.
3.2.3 If the position of the sampling port cannot meet the requirements of the specification, the position of the monitoring hole shall be confirmed by the local environmental monitoring department.
3.2.4 When toxic and harmful gases are discharged unorganized, an induced draft fan shall be installed for collection and treatment, and sampling points shall be set.
3.3 Reconstruction of solid waste storage and stacking site
3.3. 1 General solid wastes shall have special storage and maintenance places. Precautionary measures such as irregular spraying should be taken in storage and stacking places that are prone to cause secondary dust.
3.3.2 Hazardous wastes such as toxic and harmful solid wastes should be set up with special stacking places, and preventive measures must be taken to prevent scattering, loss and leakage.
3.3.3 The temporary storage and storage yard of solid waste should also be rectified according to the situation.
3.4 Remediation of Fixed Noise Emission Sources
3.4. 1 If the noise at the boundary of the plant exceeds the requirements of the environmental noise standard of the functional area, the noise source shall be rectified.
3.4.2 According to different noise sources, measures such as vibration and noise reduction, sound absorption and sound insulation can be taken to meet the requirements of functional area standards.
3.4.3 The monitoring point of fixed noise source shall be set at the place where noise is sensitive at the factory boundary and has the greatest impact on the outside world.
Chapter four? Standard formulation and filing requirements for sewage outlets
4. 1 standard requirements for sewage outlets
4. 1. 1 The pollutant discharge ports (sources) and solid waste storage and disposal sites of all pollutant discharge units must be regulated and rectified in accordance with the national standard Graphical Signs for Environmental Protection (GB15562.1-1995).
4. 1.2 Units that carry out standardized rectification of discharge outlets (sources) and solid waste storage and disposal sites must use environmental protection graphic signs supervised by the State Environmental Protection Bureau.
4. 1.3 graphical signs of environmental protection shall be set at places or sampling points near pollutant discharge ports (sources) and solid waste storage (disposal) and can be preserved for a long time. Among them, the sign of noise emission source should be set near the selected monitoring point and eye-catching. The setting height is generally: the upper edge of the environmental protection graphic signboard is 2 meters from the ground.
4. 1.4 Vertical signs should be mainly set at pollutant discharge outlets (sources) or solid waste storage and disposal sites of key pollutant discharge units; Under normal circumstances, the pollutant discharge port (source) or solid waste storage and disposal site of the pollutant discharge unit can choose to set vertical or plane fixed signs according to the situation.
4. 1.5 general pollutant discharge ports (sources) or solid waste storage and disposal sites shall be provided with suggestive environmental protection graphic signs.
Warning environmental protection graphic signs shall be set up at the discharge port (source) or hazardous waste storage and disposal site where toxic, carcinogenic and substances that are seriously harmful to human body are discharged.
4. 1.6 The columns that need to be filled in on the auxiliary signs of environmental protection graphic signs shall be filled in by the environmental protection department in a unified way, with neat handwriting and overall coordination of text and logo colors.
4.2 Requirements for filing sewage outlets
4.2. 1 Require environmental protection departments at all levels and pollutant discharge units to use the Registration Certificate of Standardized Sewage Outlet Signs in People's Republic of China (PRC) uniformly printed by the State Environmental Protection Bureau, and fill in relevant contents as required.
4.2.2 The registration certificate shall be used together with the signboard, and shall be issued by the local environmental protection department to the relevant sewage units. The number of the signboard in the registration certificate list and the number of the signboard on the registration card shall be consistent with the number on the auxiliary signboard. The uniform provisions of the numbering form are as follows:
Sewage WS-××× year×× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day× month× day × month× day × month× day × month× day × month × day × month× day × month × day × month× day × month × month × day ×
Waste gas FQ-FQ-XX GF-××××× solid waste GF-XX××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××
The first two letters of the number are the category code, and the last five letters are the serial number of the sewage outlet. The number of the sewage outlet shall be stipulated by the local environmental protection department.
4.2.3 The local environmental protection department shall, according to the contents of the registration certificate, such as the name of the pollutant discharge unit, the nature and number of the sewage outlet, the geographical location of the sewage outlet, the type, quantity and concentration of the main pollutants discharged, the discharge destination, the standard setting, the operation of the facilities, the rectification opinions, etc., establish the sewage outlet management file.
4.3 Management requirements for environmental protection facilities of sewage outlets
4.3. 1 facilities (such as metering devices, signs, etc. ) The regulation of sewage outlets belongs to environmental protection facilities. Local environmental protection departments should strengthen daily supervision and management in accordance with the relevant provisions of the supervision and management of environmental protection facilities, and sewage units should incorporate environmental protection facilities into their own equipment management and formulate corresponding management measures and rules and regulations.
4.3.2 The sewage discharging unit shall designate full-time and part-time personnel with strong sense of responsibility and professional knowledge and skills to manage the sewage outlet, with clear responsibilities and clear rewards and punishments.
The trial operation of sewage treatment project is different from that of general building water supply and drainage project or municipal water supply and drainage project. The former includes the start-up and debugging of complex biochemical reaction process, which is slow, time-consuming and strongly influenced by environmental conditions and water quality and quantity, while the latter only needs the normal operation of systems and equipment.
The trial operation of sewage treatment project is the most important link of sewage treatment project, and it is also an important link of project acceptance. Through trial operation, the quality of civil engineering, equipment and installation engineering can be further tested, which is the basis for ensuring high efficiency and energy saving during normal operation and further realizing the environmental, social and economic benefits of sewage treatment engineering.
The trial operation of sewage treatment project should not only test the quality of the project, but also test whether the project can achieve the designed treatment effect.
Contents of trial operation of sewage treatment project:
(1) Check the quality of civil engineering, equipment and installation projects through trial operation, establish relevant equipment files, and make suggestions on the design rationality and operation precautions of relevant machinery, equipment and instruments.
(2) Run some general or special equipment with load and test its performance. Such as the lifting flow and head of water pump, air volume, pressure, temperature, noise and vibration of blower, etc. , aeration capacity or oxygen utilization rate of aeration equipment, operation stability of mud scraping (discharging) machinery, effect of protective device and mud scraping (discharging) effect.
Requirements for trial operation of sewage treatment project:
(1) The trial operation of a single treatment structure is required to achieve the designed treatment effect, especially for the project with biological treatment method, it is necessary to cultivate (domesticate) microbial sludge and find the best operation process parameters on the basis of achieving the treatment effect.
(2) On the basis of trial operation of individual facilities, the joint operation and acceptance of the whole project will be carried out. Ensure that the sewage treatment reaches the discharge standard.