Tasks we have closed at real sites

Challenge

Residents complained about a persistent hydrogen sulphide odour near a sewage pumping station and its pressure manifold. A solution was needed without shutting the station down.

Solution

The BioGuard FA dosage was selected from H₂S measurements, and a DM-2 dosing module with telemetry plus an LK-1 mobile laboratory were provided on rent for monitoring.

Result

• H₂S concentration in the air fell by 85 % within the first two weeks
• Complaints from residents stopped within a month
• Reagent consumption was optimised by 20 % once the regime was tuned

Challenge

Calcium carbonate and sulphate deposits in water lines and injection wells reduced injectivity and forced frequent shutdowns for cleaning.

Solution

SPRA 100 was selected in the laboratory for the actual formation water composition and dosed continuously through rented DM-2 modules at the well pads.

Result

• Injectivity of the injection wells was restored
• The interval between cleanings more than doubled
• Spending on acid treatments was reduced

Challenge

Hydrogen sulphide in commercial oil exceeded the requirements of the custody transfer point, putting batches at risk of rejection.

Solution

AG Redusol 25 was injected into the stream ahead of the tanks, the dosage was calculated from the actual H₂S content, and residual concentration was supervised and monitored.

Result

• H₂S content was brought to the required level
• Batches are now accepted without remarks
• No deposits form in the tanks

Challenge

The dewatered sludge had a high moisture content and suspended solids at the plant outlet exceeded the limit.

Solution

A coagulant and flocculant pair — AG Coagul FC with AquaFlok P-20 — was selected through on-site trials, and the staff were trained to operate the solution unit.

Result

• Cake moisture was reduced and the volume of sludge removal fell
• Suspended solids were brought within the limit
• Reagent consumption was optimised for seasonal changes in the influent

Challenge

Scale on heat exchangers and corrosion in the recirculating loop piping reduced heat transfer and wasted energy.

Solution

An integrated programme: cleaning with AG Scale-X, followed by dosing of SPRA 100 and a corrosion inhibitor, rental of dosing equipment and regular laboratory monitoring.

Result

• The heat exchangers were cleaned without dismantling
• Corrosion rate was brought down to acceptable values
• The recirculating loop ran steadily throughout the year

Challenge

Working reagent solutions had to be prepared directly at the field, without hauling the finished product over long distances.

Solution

A BU-5 blending plant and a 25 m³ storage tank were rented out, concentrates were supplied, a preparation procedure was developed and the client’s staff were trained.

Result

• Transport costs fell because concentrates were shipped instead
• Solution is prepared to the actual needs of each shift
• Downtime caused by waiting for deliveries was eliminated

Challenge

Odour spread from the landfill cells to the surrounding area, especially during the warm season.

Solution

A fogging system supplying AG OdorNeutral was installed around the perimeter of the working cell, and the concentration and spraying schedule were tuned.

Result

• Odour intensity around the perimeter was reduced
• The system runs automatically on a schedule
• Concentrate consumption is predictable and planned monthly

Challenge

Water content in the commercial oil was rising, the emulsion was stable and consumption of the existing demulsifier had increased.

Solution

A series of bottle tests on emulsion samples, blending of a Spectraguard DM formulation for that particular stream, and industrial trials with residual water monitoring.

Result

• Residual water was brought down to target values
• Specific demulsifier consumption decreased
• Treatment temperature was lowered, saving fuel