GB 28938-2012Discharge standards of water pollutants for bast and leaf fibres textile industry (English PDF)

3.1 linen business

It refers to the ramie, flax, jute and kenaf, hemp fiber and other agricultural products as the main raw material for unglued and textile processing enterprise.

3.2 Existing Enterprise

Refers to the implementation of this standard prior to, or has been put into environmental impact assessment document has passed hemp manufacturers and raw approval

Production facility.

3.3 new enterprises

It refers to the date of implementation of this standard from the environmental impact assessment documents for approval by the new construction, renovation and expansion of production facilities linen construction project.

3.4 displacement

It refers to the amount of business to business or production facilities outside the legal boundaries of wastewater discharge, including direct or indirect relationship with the production

Various efflux wastewater (including sewage plant, cooling water, boiler plant and power plant drainage).

3.5 reference displacement per unit of product

Refers to wastewater emissions for approved water pollutant discharge concentration specified production unit capable Ma (yarn) product limits.

3.6 public sewage system

Refers to the collection of wastewater pollutant by pipelines, etc., provide drainage and wastewater services can provide more than two sewage units

Meet the relevant emission standards required by enterprises or institutions, including all sizes and types of urban sewage treatment plants, regional (including

Various industrial parks, development zones and industrial gathering, etc.) waste water treatment plants, waste water treatment level it should reach two or secondary the above.

3.7 Direct Emissions

It refers to the emission units discharged directly to the environment of water pollutants behavior.

3.8 Indirect Emissions

Sewage discharge unit refers to a public sewage system water pollutants behavior.

4.1

is from January 1, 2013 until December 31, 2014, the implementation of existing enterprises specified in Table 1 water pollutant discharge limits.

Table 1 water pollutant discharge of existing business units and product concentration limits reference displacement

Unit. mg/L (except pH, color)

Item No. pollutants

Limit

Emissions monitoring location

Direct emissions indirect emissions

1 pH value of 6 ~ 96 ~ 9

Enterprise total wastewater outfall

2 chroma (dilution) 6080

3 suspension 70100

4.2

Since January 1, 2015, the implementation of existing enterprises specified in Table 2 of water pollutant discharge limits.

4.3

Since January 1, 2013, implementation of new enterprises specified in Table 2 of water pollutant discharge limits.

Table 2 New business concentration limits and water pollutant discharge per unit of product reference displacement

Unit. mg/L (except pH, color)

Item No. pollutants

Limit

Emissions monitoring location

Direct emissions indirect emissions

1 pH value of 6 ~ 96 ~ 9

Enterprise total wastewater outfall

2 chroma (dilution) 50 80

3 suspension 50100

4.4

According to the requirements of environmental protection work in the already high density land development, environmental carrying capacity began to weaken, or ring

Habitat smaller capacity, the ecological environment is fragile, prone to serious environmental pollution problems that require special protection measures in areas,

Should strictly control the emissions behavior of enterprises, enterprises in these areas to perform specified in Table 3 of water pollutant discharge limit special value.

Implementation of water pollutant discharge limits in particular geographical scope, timing, environmental protection administrative department of the State Council or provincial

People's Government.

Table 3 water pollutant discharge limits Special

Unit. mg/L (except pH, color)

Item No. pollutants

Limit

Emissions monitoring location

Direct emissions indirect emissions

1 pH value of 6 ~ 96 ~ 9

Enterprise total wastewater outfall

2 chroma (dilution) 3050

3 suspension 2050

4.5

water pollutant discharge concentration limits for the unit is not higher than the actual product displacement per unit of product reference displacement situation condition. If the actual displacement per unit of product per unit of product than the reference displacement, shall formula (1) will change the measured concentration of water pollutants

Counted as a reference displacement of water pollutant discharge concentration, and the concentration of water pollutant emissions as a baseline displacement of determining whether emissions

Subject basis. Product yield and displacement statistical period is one day.

In the company's production facilities produce two or more products, emission control requirements applicable to different countries or different industries pollution

Most cases of sewage pollutants emission standards, and the production facilities to produce hybrid process emissions, emission standards should be implemented as specified in

Strict concentration limits, according to the equation (1) the reference in terms of displacement of water pollutants emission concentration.

Base = rhorho × · sigma ii Q (1)

Where.

Yl rho - water pollutant discharge displacement of the reference concentration, mg/L;

Total Q - drainage volume, m3;

iY - product yield, t;

Yl iQ - unit product reference displacement, m3/t;

Real rho - measured water pollutant concentration, mg/L.

Q and sigma · If the total group ii QY ratio less than 1, places the water measured concentrations of pollutants as a determination of whether the target emissions in accordance with.

5 pollutant monitoring requirements

Sampling enterprises discharge waste water of 5.1 pairs should be based on the type of the pollutants in emissions monitoring a predetermined location into

OK, waste water treatment facilities, reprocessing facilities should be monitored. Enterprises should be in accordance with the relevant national pollution monitoring technical specifications

Required to set sampling port in the emissions monitoring location should be set outfall flag.

5.2

New and existing business to install automatic monitoring equipment, emissions requirements according to the relevant laws and "source of pollution from

Provisions dynamic monitoring and management approach "implementation.

5.3

pairs Pollutant emissions monitoring frequency, sampling time and other requirements, according to the relevant national pollution monitoring technology

Technique specification provisions.

5.4

enterprise approved product yield, based on the statutory report.

5.5

Enterprise in accordance with relevant laws and regulations, "environmental monitoring management approach", the sewage to monitor the situation and save

Original monitoring records.

Determination of 5.6 pairs of enterprises discharge of water pollutants concentrations using standard methods listed in Table 4.

Table 4 Water pollutant concentration measurement method standard

Item No. Pollutant Method Standard Method Standard No. Title

Method 1 pH glass electrode measuring the value of the water quality of pH GB/T 6920-1986

6.1

standard by the people's governments above the county level environmental protection administrative department responsible for overseeing implementation.

6.2

In any case, the enterprise shall comply with the standards of pollutant emission control requirements, to take the necessary measures to ensure pollution

Control facilities running. Environmental protection departments at all levels supervise the facility checks can instantly spot sampling or monitoring

As a result, as the determination of sewage behavior meets the emissions standards and the implementation of environmental management measures related basis. Found

Under ENTERPRISES water displacement or abnormal changes should be approved enterprise actual product yield and displacement, according to the Standard

Regulations, terms of reference displacement of water pollutant discharge concentration.