Sewer system

SEWER SYSTEM

Advanced management in real time

Monitoring and remote control system
for real-time network operation

 

The orographic conditions in Murcia together with the extensive criss-crossing network of irrigation ditches hinder operation, maintenance and development of the sewer system, which means a large number of pumping stations are needed to propel the water towards the treatment plants.

Hence we have deployed infrastructures and tools to manage the town’s sewer system properly and intelligently.

  • Sewer network remote control system.
  • Geographic information system.
  • Sewer system modelling.
  • Emergency plans for crisis situations.
  • Sewer system master plans.

Remote control signals

12.000

 

Pumping stations

204

units

Stormwater tanks

11

units

Level gauges and pluviometers

118

units

Sewer and collector network

1.614

Km

Gutters

41.526

units


Other activities carried out in the sewer system

 

  • Sewer system conservation
    The main goal when dealing with incidents is to resolve external alerts received by our incident centre as quickly as possible, minimising negative impacts on wheeled traffic and our customers. Repairs are carried out on elements in the sewer system, such as domestic connections, sewer pipelines and collectors, gutters and sinks, manholes, covers and grilles, spillways, enclosures and ventilation chimneys.
  • Pump maintenance
    The electrical and mechanical installations undergo corrective and preventative maintenance and their energy efficiency is monitored. The system has numerous wastewater and rainwater pumping plants, vacuum stations and stormwater retention tanks.
  • Preventative cleaning of the surface catchment network and elements

    The aim is to remove depositions and obstructions that prevent the system from working properly and which cause unpleasant sights and smells.

    This is done through manholes using an integrated network- and gutter-cleaning management system that involves mixed impeller-suction vehicles with high-pressure water and appropriate suction capacity. For gutter cleaning, as well as the above equipment, areas of restricted access are usually cleaned manually with support from smaller adapted vehicles (water jetters), fitted with high-pressure jetting guns.

    Accessible large collectors are cleaned differently, using manual cleaning methods or electric vehicles.

  • Revision and inspection of the sewer system

    The purpose is to determine the state of the system in order to take action accordingly, detecting possible structural deficiencies in conduits and associated elements (such as connections, manholes and hatches).

    Inspections are carried out using the following methods:

    • Network inspection with vehicles fitted with CCTV.
    • Manhole inspections using fixed-pole cameras.
    • Collector inspections using a prototype boat-mounted CCTV camera.
  • Rehabilitation and improvements to the network and connections

    This includes rehabilitation with trenchless technology and actions using conventional open trenches. The milling technique is mainly used to eliminate obstacles in the network (protruding connections, depositions, waste from polishing, and so on).

    The most commonly used rehabilitation techniques involving trenchless technology are:

    • Lining inside the pipes using special sleeve (complete repair for evenly distributed deterioration) or installation of packer hoses (repair for specific isolated areas of deterioration).
    • Milling with Raco or Kate robots to eliminate remains of solids, incrustations, roots and protruding connections.
    • Resin injection into joints and cracks (watertightness treatment).
    • Internal renovation systems with polyethylene pipes, using horizontal drilling (structural treatment).