Industrial Applications

Real wastewater, real results

A selection of jar tests by our technical team on wastewater from plants across Malaysia: what the problem was, how we treated it, and what we achieved. Customer names are kept confidential.

• before

  after

  BeforeAfter

  Fluoride

  220 mg/L→0.24 mg/L

  Case 01 · Pipe coating plant · May 2026

  Fluoride removed to well within discharge limits Jar test

  The issue

  Acidic process wastewater (pH 2.6) carrying high fluoride (220 mg/L) and suspended solids (486 NTU).

  Treatment and full results

  How we solved it

  • Coagulant: Accot specialty coagulant
  • pH adjuster: Accot specialty pH adjuster
  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  Fluoride	220 mg/L	0.24 mg/L
  Turbidity	486 NTU	1.26 NTU
  pH	2.6	6.3

  Well within the DOE fluoride limits of 2.0 mg/L (Standard A) and 5.0 mg/L (Standard B).

  Learn more: What is a coagulant? · What is a pH adjuster?

• before

  after

  BeforeAfter

  Nickel

  13.89 mg/L→0.23 mg/L

  Case 02 · Metal surface-treatment chemicals plant · June 2025

  Chelated nickel brought within the Standard B limit Jar test

  The issue

  Nickel in the wastewater was locked in chelated complexes that ordinary coagulation cannot remove, so the effluent kept failing the DOE Standard B nickel limit of 1.0 mg/L.

  Treatment and full results

  How we solved it

  • Treatment: Accot specialty treatment chemicals
  • Coagulant: Accot specialty coagulant
  • pH adjuster: Accot specialty pH adjuster
  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  Nickel	13.89 mg/L	0.23 mg/L
  Zinc	163 mg/L	0.89 mg/L
  Manganese	14.2 mg/L	0.00 mg/L

  All three metals within DOE Standard B. A follow-up series in 2026 confirmed the result.

  Learn more: What is a metal catcher?

• before

  after

  BeforeAfter

  Fluoride

  152 mg/L→5.4 mg/L

  Case 03 · Silica sand processing plant · February 2026

  Fluoride cut by 96% in pickling-plant wastewater Jar test

  The issue

  Wastewater from the acid pickling plant carried 152 mg/L of fluoride along with orange suspended solids.

  Treatment and full results

  How we solved it

  • Coagulant: Accot specialty coagulant
  • pH adjuster: Accot specialty pH adjuster
  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  Fluoride	152 mg/L	5.4 mg/L
  Turbidity	78.3 NTU	10.1 NTU

  Learn more: What is a coagulant?

• before

  after

  BeforeAfter

  Turbidity

  > 1,000 NTU→1.92 NTU

  Case 04 · Rubber latex processing plant · January 2026

  Milky latex wastewater cleared to under 2 NTU Jar test

  The issue

  Combined latex and final-discharge wastewater was milky white, with turbidity above 1,000 NTU.

  Treatment and full results

  How we solved it

  • Coagulant: ACCOT K101
  • pH adjuster: ACCOT Caustic Soda 50%
  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  Turbidity	> 1,000 NTU	1.92 NTU
  Appearance	Milky white	Clear, colourless

  Learn more: What is a coagulant? · What is a flocculant?

• before

  after

  BeforeAfter

  pH

  3.9→6.7

  Case 05 · Halal food industrial park · September 2026

  Acidic wastewater neutralised and cleared Jar test

  The issue

  Wastewater in the treatment plant's aeration tank had turned strongly acidic and cloudy.

  Treatment and full results

  How we solved it

  • Coagulant: ACCOT K101
  • pH adjuster: Accot specialty pH adjuster
  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  pH	3.9	6.7
  Turbidity	273 NTU	5 NTU

  Learn more: What is a pH adjuster?

• before

  after

  BeforeAfter

  pH

  4.3→6.1

  Case 06 · Snack food factory · January 2026

  Acidic, cloudy wastewater prepared for flotation Jar test

  The issue

  Acidic, cloudy wastewater above 800 NTU was feeding the plant's dissolved air flotation (DAF) unit.

  Treatment and full results

  How we solved it

  • Coagulant: Accot specialty coagulant
  • pH adjuster: ACCOT Caustic Soda 50%
  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  pH	4.3	6.1
  Turbidity	> 800 NTU	11.2 NTU

  Learn more: What is a flocculant? · What is a pH adjuster?

• before

  after

  BeforeAfter

  Turbidity

  90.5 NTU→0.73 NTU

  Case 07 · Aircraft maintenance facility · August 2026

  Cloudy wastewater cleared to under 1 NTU Jar test

  The issue

  White, cloudy wastewater in the equalisation tank.

  Treatment and full results

  How we solved it

  • Coagulant: ACCOT K101
  • pH adjuster: ACCOT Caustic Soda 50%
  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  Turbidity	90.5 NTU	0.73 NTU
  Appearance	White, cloudy	Clear, colourless

  Learn more: What is a coagulant?

• before

  after

  BeforeAfter

  Turbidity

  672 NTU→12.4 NTU

  Case 08 · Semiconductor plant · January 2024

  Slurry that presses easily, with clear filtrate Jar test

  The issue

  Fine slurry had to be separated in a filter press.

  Treatment and full results

  How we solved it

  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  Turbidity	672 NTU	12.4 NTU
  Filtrate	Slurry	Clear

  Learn more: What is a flocculant? · What is sludge dewatering?

• before

  after

  BeforeAfter

  Turbidity

  125 NTU→18.5 NTU

  Case 09 · Dairy plant · January 2026

  Just enough treatment to protect the biology Jar test

  The issue

  Solids had to be removed ahead of the DAF unit without stripping out the organics that feed the biological reactor (SBR) downstream — so the target was just enough clarification, not the clearest possible water.

  Treatment and full results

  How we solved it

  • Coagulant: Accot specialty coagulant
  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  Turbidity	125 NTU	18.5 NTU
  Filtrate	Whitish	Clear, colourless

  Learn more: What is biological treatment?

• before

  after

  BeforeAfter

  pH

  11.5→6.0

  Case 10 · Chemical plant · May 2026

  Strongly alkaline wastewater neutralised and cleared Jar test

  The issue

  A mix of high- and low-concentration process streams was strongly alkaline and milky.

  Treatment and full results

  How we solved it

  • Coagulant: ACCOT K101
  • pH adjuster: ACCOT Sulphuric Acid 50%
  • Flocculant: Accot polymer flocculant

  Results before and after treatment

  Result	Before	After
  pH	11.5	6.0
  Turbidity	> 800 NTU	5.3 NTU

  Learn more: What is a pH adjuster?

Results are from laboratory jar tests on samples of each plant’s own wastewater. Results at full scale depend on the plant and its operating conditions.