small package sewage treatment plants

Introduction:

The WPL range of package sewage treatment plants is specifically designed for properties not connected to mains drainage.

Our unique sewage treatment system includes innovative features that you will not find elsewhere, making them the first choice for thousands of customers around the world. Our commitment to the highest quality products, supported by our friendly, knowledgeable after sales service adds up to the best wastewater treatment solution on the market.

In domestic applications the Diamond comes in a range of sizes and can provide treatment for domestic population equivalents of up to 55 persons, meeting consent standards of 20mg/l Biological Oxygen Demand, 30mg/l Suspended Solids and 20mg/l Ammoniacal Nitrogen.

Typical domestic uses:

• Single houses

• Small groups of houses, with maximum population equivalent of 55 persons

• To replace existing septic tanks

Typical commercial uses include:

• Offices     • Factories   • Bed and breakfasts   • Farm shops

• Other rural businesses

Brilliant features:

• No odours

Does not require primary settlement of raw sewage, where odours can occur

• Up to 3 year de-sludge intervals on the DMS range Efficient, continuous, bacterialdigestion process (DMC range usually requires annual de-sludging)

• No internal moving parts Simple design, reliable operation,minimal maintenance and lowrunning costs

• Fantastic value for money : Low running costs, with a small airblower

• Alarm beacon included all weather, air blower kiosk fittedwith a failure alarm beacon (+second alarm beacon as standard forIPC models)

• Compact design: Reduced excavation and handling costs

• Robust construction: No concrete backfill in somesituations

• Low visual impact Small lid, flush with the ground

• Easy to install with minimal labour

• Load tested and water tight

Protecting the Environment - The WPL Diamond treats the sewage using no chemicals and to a high standard, so that the effluent can be safely discharged

A.The wastewater flows into the main tank and enters directly into the bio-chamber (B) through this inlet pipe (A).

B. This is where the biological process begins. the bio-chamber (B) is an aerated zone where the solids circulate and are thereby biologically treated. Part of the solids settle in to area (C) only to be re-circulated via the draft tube (D) and re-treated.

C. In this area, the settled solids from the bio-chamber (B) and the clarifier (E) are drawn up through the draft tube again and released into the bio-chamber for re-treatment.

D. The draft tube enables the solids to be drawn back up into central aeration chamber and re-circulated through the treatment process.

E. This is the clarifier. There is no aeration in this area. The fluid flows upwards through the clarifier as it is being displaced when more wastewater enters the tank. The remaining solids settle out again into area (C) and are re-circulated via the draft tube (D) into the bio-chamber(B).

F. The clarified liquid then percolates through the holes in the bottom of scum board assembly and flows over the weir.

G. The clarified fluid flows out over the weir, into the outlet pipe and is then discharged

The Diamond treats wastewater to a 95th percentile standard of:

• 20mg/l Biological Oxygen Demand (BOD)

• 30mg/l Suspended Solids (SS)

• 20mg/l Ammoniacal Nitrogen (AMM-N)

Air Blower

The Diamond’s air blower is supplied with a failure alarm and a kiosk to protect it from the weather.

Your plant comes complete with 10 metres of airline to connect the blower and the tank. The Diamond can accommodate longer airlines of up to 30 metres from the blower; please speak to a member of our sales team for more information.