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Machines & equipment for sale

Rodway & Taylor Effluent treatment PH correction & sludge settlement plant

Stock No
Rodway & Taylor
PH correction effluent plant
Year of Manufacture
Ref' 2014
New or Used
Used (Second Hand)
Process Stages
Other Info
Universal waste treatment
Birmingham, UK


The Effluent Treatment plant is primarily designed as a waste water sedimentation, neutralisation and pH correction plant for industrial chemical waste streams containing suspended solids.

The effluent system takes both polluted waste water streams and chemical processing solutions and treats them to a level that allows them to be discharged to an industrial sewerage system under the control and guidance of the local water authorities and current legislative guidelines.

The waste water coming from the process lines flow into a large collection sump pit. Waste acid is stored into a separate above ground bunded storge tank. 

From the storage holding tanks, both acid and alkali waste solutions can be pumped and mixed into the pH reactor mixing vessel assisting to achieve the desired pH levels. A secondary smaller storage dosing station can also provide a constant supply of pH correction chemistry of Sodium Hydroxide solution from an IBC's using dosing pumps.

The reactor vessels also allows additional treatments to be added to the waste stream such as coagulants and foam suppressants to help separate the suspended solids and allow them to bind together making them easier to precipitate out.

The reactor vessels is agitated by a high speed mixer to ensure true readings and an even distribution of the treatment chemicals. The tanks are monitored and sampled to ensure the correct dosing levels of treatments are applied and the pH corrected to the required level.

From this vessel the corrected solution is then transferred to a pump buffer tank tank mounted adjacently before being pumped to the conical bottomed settlement tank by one of the standby and duty pumps.

The Settlement or sedimentation tank is designed to reduce the velocity of the wastewater flow, allowing heavier organic solids to settle at their base.

The settlement tank is used for the continuous mechanised removal of the suspended solids or solid particles from the neutralised waste stream. 

The separation is achieved by injecting the waste water stream into a centre feed contraflow tube which directs the flow to the lower section of the bottom cone, whereby upon release the fluid enter the larger chamber slowing the velocity of the solution.

In conjunction with the cyclonic action generated by the cone the solids are further slowed and allowed to drop from suspension falling to the bottom and compacting to a wet sludge. Whilst the solids settle the cleaner water passes this compacted sludge towards the top of the tank allowing even the finest of particles a chance to drop from suspension.

At the top of the tank the attached weir draws off the cleaned water which is then passed to an outfall tank where the final pH sampling takes place to monitor and record the outfall solution before being allowed to discharge to sewerage.

The raw, settled sludge is removed by gravity feed from the base of the cone to be further processed or removal off site.

Control panel instrumentation:

 Flow measurment: Warren Jones 460 Monitor

A stand alone flow meter monitoring system providing continuous recording of flow rate and the total flow of process water.

pH Monitoring and data logging: Ansell MDC42 digital pH pumping station monitor with high - low alarms, and a Eurotherm Nanodac data logger recording on the 5 channels of,

  1. Pumping tank pH, 
  2. Nuetralisation tank pH, 
  3. Final outfall pH
  4. Actual flow l/s
  5. Accumlative flow m³/hr

TT Pumps & Controls A-800-0221-A: Pumps service and control 

Versatile range of Standard pump control via level probes with graphical level indicator and high level alarm

Mortek Ltd Effluent control panel: Ansell MDC42 process digital pH monitors with high - low alarms, pumping control with manual / auto pumping selection with secondary standby and duty pump selection and assosiated power distribution.

 Tank dimensions 

  1. Nuetralisation tank pH, Ø1250 x 2200, 2500 Litres
  2. Pumping buffer tank pH Ø800 x 1200, 500 litres
  3. Cuastic storage tank, Ø2500 bund, Ø1600 x 2550
  4. Conical settlement tank Ø2800 x 5300 
  5. Outfall tank 100 litres






pdf icon Print / Download Rodway & Taylor Effluent treatment PH correction & sludge settlement plant Datasheet

Photographs taken prior refurbishment. Our refurbishment service is not available on all machines.