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PART A CHEMICALS
As a consequence of the publication of European standards ( BSEN) for drinking water treatment chemicals, products that conform to a BSEN may be used without the approval of Government Authorities, providing that national conditions of use listed in Appendix 2.1. are followed. These products are therefore no longer listed in this publication.
BSEN standards for drinking water treatment chemicals do not contain mandatory requirements for attestation of conformity. Water undertakers are expected to stipulate appropriate attestation requirements in their procurement contracts. A full list of chemicals which are the subject of a BSEN is given in appendix 2.1
The following chemicals are either not covered by a BSEN standard, or do not conform fully with the scope and/or requirements of a published BSEN. For all of the chemicals listed the following general condition of approval applies:
The method of use and the purity of these products shall be such that, in the case of water for public supply, the water so treated meets the requirements of the Water Supply (Water Quality)(Scotland) Regulations 2001 where appropriate additional specific conditions of approval are listed against the product.
A.1. FLOCCULANTS AND COAGULANTS
A.1.1. Products based on tannin
The dose used must not exceed 10 mgl- 1 of active material.
GE Betz Ltd
Klaraid PC 4000
A.1.2. Products based on aluminium and iron
For these products the dose must not exceed 150 mgl- 1 of the product as supplied.
Clinty Chemicals Ltd
Ferric Aluminium Sulfate
A.1.3. Products based on iron
High Chemicals ( UK) Ltd
Econofloc 11
Econofloc 15
A.2. ADSORBENTS
The contact bed containing the product must be adequately backwashed in accordance with the Instructions for Use document and then rinsed with 5 bed volumes of water passed downflow to waste.
Bayer AG
Bayoxide E33
GEH Wasserchemie Gmbh
GEH ferric hydroxide
Purolite International Ltd
Macronet - MN200
A.3. ION EXCHANGE RESINS SYSTEMS
A.3.1. Ion exchange resins
Orica UK Ltd - Watercare Europe
MIEX DOC Resin
Purolite International Ltd
Purolite A520E nitrate selective anion exchange resin
Rohm and Haas Ltd
AMBERLITE PWA5
IMACHP 336
IMACHP 555
A.3.2. Ion exchange resin based processes
BOC
IXL Process
A.4. DISINFECTANTS OR CLEANING AGENTS OF WATERWORKS APPARATUS AND DISTRIBUTION SYSTEMS
Permission or consent for disposal of any wastewater generated to a sewer or watercourse must be obtained from Scottish Water or Scottish Environment Protection Agency, as appropriate.
Aquabiotics Pty Ltd
BoreSaver Liquid
BoreSaver Ultra C
Carus Chemical Company
Carusol 20 Liquid Permanganates
Carusol 40 Liquid Permanganates
EPSCO Ltd
Carela Bio-Des
Carela Bio-Plus
Carela Bio-Plusforte
Carela Novopur
Carela RS 100
Panton McLeod Ltd
PM33
PM55
PM88
Permacare - Membrane Separations Group
Resintreat
ROAM Chemie NV
Huwa-San TR50
For this product the following condition applies:
(i) the dose of product is such that the concentration of silver in the water does not exceed 80 mg l - 1; and
(ii) Consumers are exposed to water containing silver for only as long as is required to restore conventional treatment, and for no more than 90 days in any period of a year, whichever is applicable.
Tevan BV
Herlisil
For this product the following condition applies:
(i) the dose of product is such that the concentration of silver in the water does not exceed 80 mg l - 1; and
(ii) Consumers are exposed to water containing silver for only as long as is required to restore conventional treatment, and for no more than 90 days in any period of a year, whichever is applicable.
A.5. DISINFECTANTS OR CLEANING AGENTS OF MEMBRANES
Ashland Drew Industrial Division
AmeROyal 363
Atkinson Chemicals Ltd
Kinro 1020
Kinro 1020D
Kinro 1406
Kinro 1406N
Kintrol 556
Kintrol 556C
Avista Technologies ( UK) Ltd
RoClean 111
RoClean P303
Vitec 3000
Vitec 4000
Vitec 5000
GE Betz Ltd
Hypersperse MDC150
Hypersperse MDC220
Genesys International Ltd
Genesol 38
Genesol 40
Genesys HR
Genesys LF
Genesys MG
Genesys SI
Genesys SW
Gulf Specialized Water Services Company
GulfChem GS300
GulfChem GS500
GulfChem GS510
GulfChem GS520
GulfChem GS530
Permacare - Membrane Separations Group
Permaclean 77
Permaclean 99
PermaTreat 191
Resintreat
Rohm and Haas Ltd
Acumer 1100
Acumer 4035
Acumer 4450
Acumer 4800
A.6. DISINFECTANTS FOR EMERGENCY USE
For products in this section the following conditions apply:
(i) the dose of product is such that the concentration of silver in the water does not exceed 80 mg l - 1; and
(ii) Consumers are exposed to water containing silver for only as long as is required to restore conventional treatment, and for no more than 90 days in any period of a year, whichever is applicable.
Aqua Cure plc
ACHYSHP
Aqua Dosa Sanitaser
ROAM Chemie NV
Huwa-San TR5
Huwa-San TR50
Tiosan
Swissteril International 5755 Ltd
Sanosil Super 25
Steril
A.7. PRODUCTS BASED ON TRADITIONAL CHEMICALS
A.7.1. Traditional Chemicals
The following traditional chemicals (not covered by a specific BSEN) are considered by the Committee to be unobjectionable on health grounds for the treatment of water.
For products in this section the following general condition applies:
The method of use and the purity of these products shall be such that, in the case of water for public supply, the water so treated meets the requirements of the Water Supply (Water Quality) (Scotland) Regulations 2001.
Calcium chloride
Calcium sulphate
Citric acid (food grade) - for use only in cleaning of membranes
Crushed flint ( e.g. Flintag)
Ferrous chloride
Magnesium carbonate
Magnesium hydroxide
Magnesium oxide
Magnesium sulphate - use only for re-mineralisation with RO membrane systems
Magnetite
Sodium chloride
Sodium sulphate
A.7.2. On-site electrolytic generation of chlorine
Products in this section are not fully covered by BSEN 901 and must conform to the following cobditions of use:
(i) The method of use and the purity of the output of these products shall be such that, in the case of water for public supply, the water so treated meets the requirements of the Water Supply (Water Quality)(Scotland) Regulations 2001.
(ii) The treated water must not contain more than 700 µg/l chlorate.
Aztec Environmental Controls
Sodium hypochlorite generated by the ElectroCell Process
Proton Water Services Ltd
PRO- SEC System
Severn Trent Services
Clortec cell
Wallace and Tiernan Ltd
Sodium hypochlorite generated by the OSEC system
Waterman Environmental Services Ltd
MIOX Electrolytic Sodium Hypochlorite Generators
A.8. OTHER CHEMICALS
Lithium Salts
For this product the following condition applies:
The use of lithium salts for meter calibration in water mains is acceptable providing that the maximum concentration of lithium in water supplied to consumers does not exceed 0.10 mgl- 1 at any time (the analytical method used for lithium determination should have an accuracy better than ±0.01 mg l -1 at 0.10 mg l -1)
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