GB 15580-2011Discharge standard of water pollutants for the phosphate fertilizer industry (English PDF)

3.1 Phosphate fertilizer industry

The industry that produces phosphate fertilizer products. Phosphate fertilizer products include. superphosphate (referred to as calcium), calcium magnesium phosphate, ammonium phosphate, heavy superphosphate (simplified

Weighing calcium), compound fertilizers (including compound fertilizers and fertilizers), nitrophosphate and other by-products (such as fluorine processing products), and the production of phosphate fertilizer

The intermediate product required is phosphoric acid (wet method).

3.2 Existing enterprise existing facility

Phosphate fertilizer enterprises or production facilities that have been approved for production or environmental impact assessment documents have been completed by the date of implementation of this standard.

3.3 New enterprise new facility

From the date of implementation of this standard, the environmental impact assessment document approved the construction, reconstruction and expansion of the phosphate fertilizer industry construction project.

3.4 Direct discharge

The behavior of pollutant discharge units directly discharging pollutants into environmental water bodies.

3.5 Indirect discharge

The discharge of pollutants by the pollutant discharge unit to the public sewage treatment system.

3.6 Public sewage treatment system

Collect wastewater through sewage pipelines, provide wastewater treatment services for more than two sewage disposal units, and discharge to achieve relevant emissions

Enterprises or institutions required by the standard, including urban sewage treatment plants of various scales and types, areas (including various industrial parks, development zones,

Industrial gathering places, etc.) Wastewater treatment plants, etc., should have a wastewater treatment level of two or more.

3.7 Effluent volume

The amount of wastewater discharged by a production facility or enterprise outside the legal boundaries of the enterprise, including various external wastes that are directly or indirectly related to production.

Water (such as domestic sewage, cooling wastewater, plant boilers and power station drainage).

3.8 Benchmark effluent volume per unit product

The upper limit of the wastewater discharge amount of the production unit phosphate fertilizer product specified for the approval of the discharge concentration of water pollutants.

4.1

From October 1,.2011 to March 31,.2013, existing companies implement the water pollution emission limits specified in Table 1.

Table 1 Limits of existing enterprise water pollutants

Unit. mg/L (except pH)

Serial number of pollutants

Direct emission limit indirect discharge

Limit pollutant discharge monitoring position, superphosphate, calcium, magnesium phosphate, ammonium phosphate, a heavy superphosphate, compound fertilizer

1 pH value 6~9 6~9 6~9 6~9 6~9 6~9

Corporate wastewater discharge

4.2

As of April 1,.2013, existing companies implement the water pollution emission limits specified in Table 2.

4.3

Since October 1,.2011, new enterprises have implemented the water pollution emission limits specified in Table 2.

Table 2 New enterprise water pollutant emission limit

Unit. mg/L (except pH)

Serial number of pollutants direct emission limit indirect emission limit pollutant discharge monitoring position superphosphate calcium magnesium magnesium phosphate ammonium phosphate a heavy superphosphate super compound fertilizer

1 pH value 6~9 6~9 6~9 6~9 6~9 6~9

Corporate wastewater discharge

4.4

According to the requirements of environmental protection work, the density of land development has been high, the environmental carrying capacity has begun to weaken, or the environmental capacity is small.

In areas where the ecological environment is fragile and prone to serious environmental pollution problems and special protection measures are required, the pollutants of enterprises should be strictly controlled.

In the discharge behavior, the phosphate fertilizer enterprises in the above-mentioned areas implement the special discharge limit of water pollutants specified in Table 3.

Table 3 Special limits for water pollutants

Unit. mg/L (except pH)

Serial number of pollutants direct emission limit indirect emission limit pollutant discharge monitoring position superphosphate calcium magnesium magnesium phosphate ammonium phosphate a heavy superphosphate super compound fertilizer

1 pH value 6~9 6~9 6~9 6~9 6~9 6~9

Corporate wastewater discharge

4.5

The concentration limit of water pollutant discharge is applicable to the case where the actual displacement of the unit product is not higher than the unit discharge of the unit product. If the unit is produced

If the actual displacement of the product exceeds the standard discharge of the unit product, the measured water pollutant concentration shall be converted into the reference discharge of the water pollutant according to formula (1).

Emission concentration, and the discharge concentration of water pollutants as the basis for determining whether the emission is up to standard. Product Production and Discharge Statistics Week

The period is one working day.

Production of two or more products at the same time in the production facilities of the enterprise, applicable to different emission control requirements or national pollutant discharge standards in different industries

In the case of quasi-mixed wastewater from production facilities, the most stringent concentration limits specified in the emission standards shall be implemented and

Equation (1) Converts the discharge concentration of water pollutants from the baseline.

YQ rho rho= ×sum total base (1)

Where. rho base - water pollutant baseline discharge concentration, mg/L;

Q total - measured total drainage, m3;

iY--the output of a certain product, t;

iQ base - the base product displacement of a product, m3/t;

If the ratio of Q to is less than 1, the measured concentration of water pollutants is used as the basis for determining whether the discharge meets the standard. Total i iY Qsum base

5.1

Sampling of wastewater discharged by enterprises shall be carried out according to the type of pollutants to be monitored and at the monitoring location of the specified pollutant discharge. Waste water

The treatment facilities shall be monitored after the treatment facility. A permanent drain outlet sign shall be provided at the pollutant discharge monitoring location.

5.2

Requirements for the installation of automatic monitoring equipment for pollutant discharge in newly-built enterprises and existing enterprises, in accordance with relevant laws and “Automatic Monitoring and Management of Pollution Sources”

The provisions of the Measures are implemented.

5.3

Frequency, sampling time, quality assurance and quality control requirements for monitoring the discharge of pollutants from enterprises, according to relevant national pollution

Implementation of the technical specifications for dye source monitoring.

5.4

The verification of the output of the enterprise products shall be based on the statutory statements.

5.5

The enterprise shall monitor the discharge status and preserve the original monitoring in accordance with the relevant laws and the Measures for the Administration of Environmental Monitoring.

recording.

5.6

The method standards listed in Table 4 are used to determine the concentration of pollutants discharged from enterprises.

Table 4 Standards for determination of water pollutant concentration

No. Contaminant Project Method Standard Name Method Standard Number

1 pH value water quality determination of glass electrode method GB/T 6920-86

2 Chemical oxygen demand water quality Determination of chemical oxygen demand - Dichromate method GB/T 11914-89 Water quality chemical oxygen demand determination Rapid digestion spectrophotometric method HJ/T 399-2007

6.1

This standard is supervised and implemented by the environmental protection administrative department of the people's government at or above the county level.

6.2

Under any circumstance, the enterprise shall comply with the pollutant emission control requirements of this standard and take necessary measures to ensure that the pollution prevention facilities are positive.

Always running. When the environmental protection departments at all levels conduct supervised inspections of the facilities, they can immediately sample or monitor the results on site to determine the sewage discharge.

The basis for compliance with emission standards and implementation of relevant environmental protection management measures. In the case of discovering that the facility consumes water or has abnormal changes in displacement

Under the circumstance, the actual product output and displacement of the facility shall be verified, and the discharge concentration of the water pollutants shall be converted according to the provisions of this standard.