Hydroself

The GNA HYDROSELF flushing system is a highly effective cleaning system which requires no electricity, no maintenance and no fresh water. There is virtually no limit on flushing length as more flush water may be stored without incurring any additional construction or operating costs.

The GNA HYDROSELF is a simple method for sediment removal. Flush water is held in reserve in the storage basin. This flush water, released by a patented mechanism, gives rise to a high celerity wave that effectively removes all accumulated debris in basins and interceptors over flushway lengths greater than any other available method.

True to its name, the GNA HYDROSELF, is a self contained system. It operates without any external power or water supply and requires no complicated controls. Its success has been proven over the years through hundreds of operating European installations. The device's high operating reliability results from a mix of fine engineering coupled with robust construction as well as quality materials such as brass and stainless steel in its design. The few moving parts are more than amply designed and dimensioned, thus reducing maintenance to practically nil.

The self-contained GNA HYDROSELF system has these main features:

• The gate which holds back the stored water.
  
• The float control mechanism for the gate, which is operated by a closed circuit hydraulic system.
  
• The system may also be operated using electric controls, if desired, with power usage < 1.0 kW.

GNA HYDROSELF may be used to flush waste water equalization tanks, CSO retention tanks or storm water run-off detention systems. After the water is drained from the tank, the flushing system is automatically activated thereby producing a high celerity wave. Accumulated debris and pollutants are washed from the tank floor and returned to the waste water treatment plant.

GNA HYDROSELF may also be used in interceptors. Activating the flushing wave not only regularly flushes the interceptor system, thus increasing capacity, but it also reduces the pollutants concentration peak thus reducing the negative impact on waste water treatment plants.

ADVANTAGES OF THE GNA HYDROSELF

• No limitation on flushway length; several devices may be installed in series.
  
• No external power required.
  
• No external water supply required.
  
• No maintenance required.

Grande, Novac & Associates, 3532 Ashby St., Montreal, PQ H4R 2C1. Tel: 514-3391131; Fax: (514) 339-9720.