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Cosmetic Ingredients,Aloe Vera Leaf Extract,Pure Aloe Extract,Aloe Vera Extract For Skin Xi'an Longze Biotechnology Co., Ltd. , https://www.bestbilberry.com 1 Scope
2 normative references
3 terms and definitions
4 water quality requirements
5 water quality requirements
6 Water quality inspection and monitoring
7. Water quality safety regulations
Urban water supply quality standard
Urban water supply quality standard
CJ/T 206—2005
This standard specifies the water quality requirements for water supply, water quality requirements, water quality inspection and monitoring, and water quality safety regulations.
This standard applies to urban public centralized water supply, self-built facilities water supply and secondary water supply.
Urban public centralized water supply enterprises, self-built facilities water supply and secondary water supply units shall meet the water quality requirements stipulated in this standard within the scope of water supply and management. The water quality of the user's water point should also meet the water quality requirements specified in this standard.
The terms in the following documents become the terms of this standard by reference to this standard. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents are available. . For undated references, the latest edition applies to this standard.
GB 3838 surface water environmental quality standard
GB 5750 Standard Test Method for Drinking Water
GB/T 14848 Groundwater Quality Standard
CJ/T 141 Urban Water Supply Determination of Silicon Dioxide - Molybdenum Blue Spectrophotometry
Determination of CJ/T 142 urban water supply raft
CJ/T 143 Determination of sodium, magnesium and calcium in urban water supply
CJ/T 144 Urban Water Supply Determination of Organophosphorus Pesticides Gas Chromatography
Determination of Volatile Organic Compounds in CJ/T 145 City Water Supply
CJ/T 146 Urban Water Supply Determination of Phenolic Compounds by Liquid Chromatography
CJ/T 147 Urban Water Supply Determination of Polycyclic Aromatic Hydrocarbons by Liquid Chromatography
Determination of Streptococcus mutans in CJ/T 148 city water supply
Determination of spores of sulfite-reduced anaerobic bacteria (C. coli) in CJ/T 149 urban water supply
CJ/T 150 Urban water supply Determination of mutagens Salmonella typhimurium/mammalian microsomal enzyme test
3.1 City
The municipalities, cities and towns established by the state according to the administrative system.
3.2 urban water supply
Urban public centralized water supply enterprises and self-built facilities water supply units provide drinking water for urban residents and other waters for urban use.
3.3 Urban public centralized water supply
Urban tap water supply companies provide water to the living, production and other activities of units and residents with public water supply pipes and their ancillary facilities.
3.4 Self-built facilities water supply
Water units in cities use their own water supply pipelines and their ancillary facilities to provide water to their units for their living, production and other activities.
3.5 secondary water supply
The water supply unit will supply water from the public water supply and self-built facilities of the city to the users through storage or pressurization or after deep treatment and disinfection.
3.6 users accept water points
The water point of the user within the water supply range, that is, the faucet (faucet).
4.1 Urban water supply quality
The water quality of urban water supply should meet the following requirements.
4.1.1 Water must not contain pathogenic microorganisms.
4.1.2 Chemical substances and radioactive substances contained in water shall not endanger human health.
4.1.3 The sensory properties of water are good.
4.2 City Water Supply Water Quality Inspection Project
4.2.1 The routine inspection items are shown in Table 1.
Serial number
Project
Limit
1
Microbiological index
Total number of bacteria
≤80 CFU/mL
Total coliform
Do not detect in every 100 mL of water sample
Heat-resistant coliform
Do not detect in every 100 mL of water sample
Residual chlorine (measured when chlorinated)
After contact with water for 30 min, the free chlorine in the factory is ≥O. 3 mg/L;
Or after contact with water for 120 min, the total chlorine in the effluent is ≥O. 5 mg/L;
Stinky
No odor, user acceptable
Turbidity
1NTU (special circumstances ≤ 3NTU) 1 .
Visible to the naked eye
no
chloride
250 mg/L
Table 1 continued
Serial number
Project
Limit
aluminum
0.2 mg/L
copper
1 mg/L
Total hardness (calculated as CaCO)
450 mg/L
iron
0.3 mg/L
manganese
0.1 mg/L
pH
6.5~8.5
Sulfate
250 mg/L
Solubility total solid
1000 mg/L
Zinc
1.0 mg/L
Volatile phenol (based on phenol)
0.002 mg/L
Anionic synthetic detergent
0.3 mg/L
Oxygen consumption (COD Mn , in terms of 0 2 )
3 mg/L (special case ≤ 5 mg/L) 1
Toxicological indicators
arsenic
0.01 mg/L
cadmium
0.003 mg/L
Chromium (hexavalent)
0.05 mg/L
Cyanide
0.05 mg/L
Fluoride
1.0 mg/L
lead
0.01 mg/L
HG
0.001 mg/L
Nitrate (in N)
10 mg/L (special case ≤ 20 mg/L).
selenium
0.01 mg/L
Carbon tetrachloride
0.002 mg/L
Trichloromethane
0.06 mg/L
Dichlorvos (including trichlorfon)
0.001 mg/L
Lin Dan
0.002 mg/L
DDT
0.001 mg/L
Acrylamide (measured when polyacrylamide is used)
0.0005 mg/L
Table 1 continued
Serial number
Project
Limit
3
Chlorite (measured using ClO 2 )
0.7 mg/L
Bromate (measured using 0.)
0.01 mg/L
Formaldehyde (measured when using o.)
0.9 mg/L
4
Radioactivity index
Total a radioactivity
0.1 Bq/L
Total p radioactivity
1.0 Bq/L
Note: 1 Special circumstances are water source water quality and water purification technology restrictions.
2 Special circumstances mean that the water quality of the water source exceeds Class III, ie the oxygen consumption is >6 mg/L.
3 special circumstances are water source restrictions, such as taking water, etc.
4.2.2 Unconventional inspection items are shown in Table 2.
Table 2 Unconventional inspection items and limits for urban water supply quality
Serial number
Project
Limit
1
Microbiological index
Fecal streptococcus
Do not detect every 100 mL of water sample
Giardia lamblia
(Giardia lamblio)
<1/10 L 1
Cryptosporidium
(Cryptosporidium)
<1/10 L 2
2
Sensory traits and general chemical indicators
Ammonia nitrogen
0.5 mg/L
Sulfide
0.02 mg/L
sodium
200 mg/L
silver
0.05 mg/L
3
Toxicological indicators
antimony
0.005 mg/L
barium
0.7 mg/L
beryllium
0.002 mg/L
boron
0.5 mg/L
nickel
0.02 mg/L
molybdenum
0.07 mg/L
thallium
0.0001 mg/L
Table 2 continued
Serial number
Project
Limit
Toxicological indicators
Toxicological indicators
benzene
0.01 mg/L
Toluene
0.7 mg/L
Ethylbenzene
0.3 mg/L
Xylene
0.5 mg/L
Styrene
0.02 mg/L
1,2-dichloroethane
0.005 mg/L
Trichloroethylene
0.005 mg/L
Tetrachloroethylene
0.005 mg/L
1,2-dichloroethylene
0.05 mg/L
1,1-dichloroethylene
0.007 mg/L
Trihalomethane (total)
0.1 mg/L 5
Chlorophenol (total)
0.010 mg/L 6
2,4,6-trichlorophenol
0.010 mg/L
TOC
No abnormal changes (trial)
Pentachlorophenol
0.009 mg/L
Dimethoate
0.02 mg/L
Methyl parathion
0.01 mg/L
Parathion
0.003 mg/L
Methamidophos
0.001 mg/L (tentative)
2, 4 drops
0.03 mg/L
Deltamethrin
O.02 mg/L
Dichloromethane
O. 005 mg/L. ,
1,1,1-trichloroethane
O. 20 mg/L
1,l,2-trichloroethane
O. 005 mg/L
Vinyl chloride
O. 005 mg/I. .
Monochlorobenzene
O. 3 mg/L
1,2-dichlorobenzene
1. O mg/L
1,4-dichlorobenzene
O. 075 mg/L
Trichlorobenzene (total)
O. 02 mg/L 7
Polycyclic aromatic hydrocarbons (total)
O. 002 mg/L 8
Benzo[a]芘 i
O.OOO01 mg/L
Bis(2-ethylhexyl) phthalate
0.08 mg/L
Epichlorohydrin
O.OOO 4 mg/L
Microcystins-LR
O.00 1 mg/L 3
Haloacetic acid (total)
O. 06 mg/L 49
Atrazine (Atrazine)
O. 002 mg/L
Hexachlorobenzene
O. OO 1 mg/L
Hexachlorobenzene
O. OO 1 mg/L
Hexachlorobenzene
O. OO 1 mg/L
Table 2 continued
Serial number
Project
Limit
Note: 1, 2, 3, 4 have been inspected since June 2006.
5 Trihalomethanes (total) include chloroform, monochlorodibromomethane, dichloromonobromomethane, and tribromomethane.
6 chlorophenol (total) includes three disinfection by-products of 2-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, and does not contain pesticide pentachlorophenol.
7 Trichlorobenzene (total) includes 1,2,4-trichlorobenzene, 1,2,3-trichlorobenzene, 1,3,5-trichlorobenzene.
8 polycyclic aromatic hydrocarbons (total) include benzo[a]pyrene, benzo[g,h,i]fluorene, benzo[b]fluoranthene,benzo[k]fluoranthene,fluoranthene,fluorene[1] , 2,3-c,d]芘.
5.1 When using surface water as the water supply source, it should meet the requirements of GB 3 8 3 8.
When using groundwater as the source of water supply, it should meet the requirements of GB/T 1 4 84 8 .
5.2 The radioactive indicators of water quality should meet the requirements of Table 1.
5.3 When the water quality of the water source does not meet the requirements, it should not be used as a water supply source. If it is limited to the conditions that need to be utilized, the water quality exceeding the standard project shall be up to the requirements of this standard after being purified by the waterworks.
6.1 The inspection method for water quality shall be carried out in accordance with GB 5 7 5 0, CJ/T 1 4 1 to CJ/T 1 50 and other standards. For the inspection of items not included in the above test method standards, other equivalent analysis methods may be used, but the applicability test shall be carried out.
6.2 Surface water quality monitoring of surface water shall be carried out in accordance with the relevant provisions of GB 3 83 8 .
6.3 Groundwater source water quality monitoring shall be carried out in accordance with the relevant provisions of GB/T 1 4 84 8 .
6.4 Urban public centralized water supply enterprises shall establish a water quality inspection room, which shall be equipped with inspectors and instruments that are compatible with the water supply scale and water quality inspection items, and shall be responsible for checking the water quality of source water, purification structure water, factory water and pipe network water. , if necessary, should be sampled to test the user's water
6.5 Self-built facilities water supply and Lanci water supply units shall be tested for water quality in accordance with the requirements of this standard. If it is limited to the conditions, some projects can also be commissioned by the monitoring unit with the corresponding qualifications.
6.6 Selection of sampling points
The sampling points should be representative, and should be set at the water source water intake, the water outlet of the water plant, and the frequent water points of the residents and the end of the pipe network. The number of sampling points for water quality inspection of the pipe network shall generally be calculated based on one sampling point per 20,000 people of the water supply population. When the water supply person 13 is below 20% and is more than 100,000, it can be increased or decreased as appropriate.
6.7 The water quality inspection items and inspection frequency are shown in Table 3.
Table 3 Water quality inspection items and inspection frequency
Water sample category
Test items
Inspection frequency
Source water
Turbidity, color, smell and taste, macroscopically visible, COD Mn , ammonia nitrogen, total bacteria, total coliform, heat-resistant coliform
Not less than once a day
A total of 29 items related to water quality inspection basic items and supplementary items in GB 3838
Not less than once a month
Factory water
Turbidity, color, smell and taste, visible to the naked eye, residual chlorine, total number of bacteria, total coliform, heat-resistant coliform, COD Mn
Not less than once a day
Table 1 for all items, hazardous substances that may be contained in Table 2
Not less than once a month
Table 2 all items
Use surface water as water source: every half year
Detect once
Using groundwater as a source of water: every year
Detect once
Pipe network water
Turbidity, color, odor and taste, residual chlorine, total bacteria, total coliform, COD Mn . (pipe network tip point)
Not less than twice a month
Pipe network tip water
Table 1 for all items, hazardous substances that may be contained in Table 2
Not less than once a month
Note: When the test result exceeds the water quality index limits in Tables 1 and 2, the measurement should be repeated immediately and the frequency of detection should be increased. When the water quality inspection results exceed the standard continuously, the cause should be identified and effective measures should be taken to prevent harm to human health.
6.8 The qualification rate requirements for water quality inspection projects are shown in Table 4.
Table 4 Qualification rate of water quality inspection project
Water sample inspection project
Factory water or pipe network water
Comprehensive
Factory water
Pipe network water
Table 1 project
Table 2 items
Pass rate,%
95
95
95
95
95
Note: 1. The overall pass rate is: the weighted average pass rate of 42 test items in Table 1.
2. Passing rate of factory water inspection items: turbidity, color, odor and taste, visible to the naked eye, residual chlorine, total bacteria, total coliform, heat-resistant coliform, COD Mn a total of 9 items.
3. Qualification rate of pipe network water inspection project: turbidity, color, odor and taste, residual chlorine, total bacteria, total coliform, CODMn (end of pipe network) a total of 7 qualified rate.
4. Comprehensive pass rate is calculated by weighted average
Calculation formula:
(1)
(2)
(3)
7.1 The water source protection area must be established according to law. It is strictly forbidden to build any facilities that may endanger the water quality of the water source and all acts that impede the water quality of the water source.
7.2 Urban public centralized water supply enterprises and self-built facilities water supply units shall regularly monitor and evaluate the water quality of drinking water sources according to relevant standards, and establish a water source water quality database.
7.3 When the water quality of the water supply is abnormal and the pollutants exceed the relevant standards, the frequency of water quality monitoring should be strengthened. It should also promptly report to the municipal water supply administrative department and the health supervision department.
7.4 The management units of water plants, water distribution facilities and secondary water supply facilities shall establish corresponding production, water quality inspection and management systems in accordance with the requirements of this standard for water supply quality and water quality inspection, in light of the local conditions. Ensure that the water supply quality meets the requirements of this standard.
7.5 When urban water supply source water quality or water supply facilities have major pollution incidents, urban public centralized water supply enterprises or self-built facilities water supply units shall take effective measures in a timely manner. In the event of unexplained sudden deterioration of water quality and waterborne disease outbreaks, the water supply enterprise shall immediately report to the local water supply administrative department in addition to emergency measures.
7.6 Urban public centralized water supply enterprises, self-built facilities water supply and secondary water supply units shall conduct maintenance and management of the facilities in accordance with this standard and relevant state regulations to ensure that the water quality of the water supply to the users meets the requirements of this standard.