Function Questionnaire

Make sure that the right functions are in place at your treatment plant. Specifiy the task and let us help you achieve a smooth, cost effective and trouble free operation.

General information

Company Name Phone Mail

FUNCTIONS

Tertiary treatment

HYDRAULIC LAYOUT

Design flow for UV disinfection (m³/h) Complete discharge of wate water treatment works (100 %) or partial flow for reuse? (%) Disinfection in open channel / gravity flow or pressurised system with pipe work? (please specify): Open channel systems: (m³/h) Max. dry weather flow: Max. wet weather flow: Closed Package systems: (bar) Max. operating pressure: Max. allowable head loss: Constant flow? Yes
No Continuous flow Batch mode (e.g. discharge of SBR)

ORIGIN OF WASTEWATER

Percentage of domestic wastewater (%) Percentage of industrial wastewater (%) Types of industry (please specify) Combined stormwater overflow (please describe)

PURPOSE OF DISINFECTED WASTEWATER

Discharge into river/sea or Reuse? (please specify)

TREATMENT OF WASTEWATER

Sewage treatment works is: In planning
Under construction
Operating Disinfection in open channel/ gravity flow or pressurised system with pipe work? (please specify) Location of UV system? Indoor
Outdoor Existing building for electrical cabinets adjacent to the UV system? (distance in m)

WATER ANALYSIS (INLET UV SYSTEM)

Analysis of waste water:

COD (mg/l, avg. and max.) BOD (mg/l, avg. and max.) Suspended Solids (mg/l, avg. and max.) Cl (mg/l, avg. and max.) Fe (mg/l, avg. and max.) Mn (mg/l, avg. and max.) UV transmittance (% per 1 cm, avg. and min.) Total coliforms (per 100 ml, avg. and max.) Faecal coliforms (per 100 ml, avg. and max.)

DISINFECTION REQUIREMENTS

Specified requirements:

target organism, log reduction, 30 days geometric mean, 80 - 98 %ile Min. UV dose at end of lamp lifetime (J/cm², calculated via point source summation) min. UV dose at end of lamp lifetime (J/cm², compliance with special regulations, validations or type approvals, e.g. NWRI validation)