Case Studies


Case Study: Clean TeQ Aids Municipal Treatment Plant To Reach Stringent Regulations in China

Project Introduction

  • Client: Municipal Wastewater Plant
  • Application: Municipal Wastewater
  • Location: Shanxi Province, China
  • Technology: Continuous Ion Exchange (CIF®) and Clean-Bio Denitrification (CB-DN®)

Objective

The treatment plant was operating with discharge levels above national regulation levels. To achieve required levels of pollutants the customer had implemented a range of costly short-term treatment options, including coagulation precipitation, UV disinfection and multiple sedimentation pools with a large area footprint. The customer was looking for more provident and economic solutions for future operation.

Capacity

Phase 1: 13, 000 tons/day

Sedimentation pool as part of conventional treatment process on site

Customer Challenge

The customer was already operating at low levels discharge levels of pollutants, but was unable to meet regulation standards. Due to trace levels of pollutants, as presented in the table below, the customer relied on expensive chemical treatments to achieve discharge level output water. In addition to the conventional wastewater treatment process, multiple steps were attached to the process, including coagulation-precipitation, additional sedimentation pools and UV sterilisation.

Clean TeQ Solution

Clean TeQ provided an alternative solution to the costly upgrading steps, which will decrease operating costs for the treatment plant, and reduce chemical consumption and waste production. Through Continuous Ion Exchange (CIF®) our technology will extract the target pollutants, TN, TP and COD, and bring the final product water well below regulatory limits. The flexibility of our technology allows for near constant pollutant removal, also during peak pollution levels. By applying the resulting brine produced during Continuous Ion Exchange step to Clean-Bio (CB-DN®) Biocatalyst, and subsequent recycling of the CIF® brine, the complete Clean TeQ tertiary treatment process is close to Zero Liquid Discharge (ZLD), providing no waste-compounds containing Nitrogen.

Result

The table presents the discharge limit prior to and after Clean TeQ tertiary treatment, in addition to the regulation limits.

Water quality upgrade for Qi Xian Municipal treatment plant. The CleanTeQ upgrade levels have been acquired through extensive pre-installation R&D work on and off customer site.
ParameterBOD5CODCrSSTNTPNO3-N
Before CLQ Upgrade (peak) (ppm)206020201.08 (15)
Regulation limit (ppm)<50n/a<5<0.5<2
After CLQ Upgrade (ppm)<10<40<10<2<0.4<2
Upgrade (%)5033.350906075 (87)

 

 

 


Case Study: Clean TeQ Technology Provides Water Recycle and Metal Recovery in Oman

Project Introduction

Clean TeQ was approached to provide a water treatment solution for an Antimony Ore Roasting Facility in Sohar, Oman. The process treats 4 wastewater streams to potable quality for recycling back to the roaster.

  • Client: Strategic and Precious Metals Processing (SPMP)
  • Application: Metal Processing Wastewater Treatment
  • Location: Sohar, Oman
  • Technology: DeSALx®, Precipitation and Reverse Osmosis
  • Installation date: 2018

Objective

Clean TeQ was approached to provide a water treatment solution for an Antimony Ore Roasting Facility in Sohar, Oman. The process treats 4 wastewater streams to potable quality for recycling back to the roaster.

Capacity

The treatment plant is to treat a combination of 4 wastewater streams with varying flows:

  • Feed 1: 80 tons/day
  • Feed 2: 55 tons/day
  • Feed 3: 144 tons/day
  • Feed 4: 52 tons/day
  • Combined capacity: 330 tons/day

Customer Challenge

A range of parameters made the wastewater treatment challenging for conventional treatment technologies to tackle. The 4 wastewater streams are highly variable, in both flow rates and qualities – which requires the treatment plant to treat a wide range of scenarios. The plant is located in a remote location, with no waste or brine handling facilities nearby. The wastewater treatment must thus be treated to minimize brine. Further, the plant is located in the hot and humid middle eastern conditions, which required the equipment to be robust and resilient to extreme temperatures. Finally, the plant must operate under a restricted budget, requiring an efficient and economical process.

Clean TeQ Solution

Clean TeQ’s Oman effluent treatment plant provides a holistic solution for processing several waste-water streams from the Sohar SPMP Antimony Roaster.

The plant removes both suspended solids (TSS) and dissolved contaminants (TDS: Na, Cl, Ca, Mg, SO4, Metals) from the wastewater, and produces potable quality treated water with zero liquid brine (ZLED).

Clean TeQ uses a combination of continuous ion exchange (DeSALx®), precipitation, and reverse osmosis to treat the wastewater. The process is cost-effective, highly robust, and economical – making it ideal for the harsh middle-eastern conditions of the mine-site.

 

A simplified Process Flow Diagram of CleanTeQ’s treatment solution in Oman

 

Result

Clean TeQ wastewater treatment plant September 2018

 

 


Case Study: Clean TeQ Technology Provides Water Treatment for Recycling and Reinjection in Australia

Project Introduction

Clean TeQ Ltd. has been contracted by Fosterville Gold Mine to provide a water treatment solution for their existing gold mining operation. The site is located approximately 20 km east of Bendigo, in the state of Victoria, Australia.

Clean TeQ has been tasked with the design, supply and commissioning of the water treatment plant for the mine. The proposed solution was piloted on-site in 2016 using live mine water, and obtained successful results. A major works agreement for final execution of the project was signed in December 2017.

  • Client: Gold Mine in Victoria
  • Application: Fine Metals Mine
  • Location: Fosterville, Australia
  • Technology: Precipitation and DeSALx®

Objective

Clean TeQ Ltd. has been contracted by Fosterville Gold Mine to provide a water treatment solution for their existing gold mining operation. The site is located approximately 20 km east of Bendigo, in the state of Victoria, Australia.

Clean TeQ has been tasked with the design, supply and commissioning of the water treatment plant for the mine. The proposed solution was piloted on-site in 2016 using live mine water, and obtained successful results. A major works agreement for final execution of the project was signed in December 2017.

Capacity

The system needed to be able to perform consistently across variable flow rates, from a minimum of 480 to maximum 1,920 tons per day.

Customer Challenge

Fosterville Gold Mine required a system to treat water to the quality required for aquifer re-injection. This included the treatment of hardness, sulphate, antimony and arsenic. The system needed to be able to perform consistently across variable flow rates (from 20 to 80 m3/h).

The system also acts as a pre-treatment for Reverse Osmosis to reduce operating expenditures. This is in order to allow a portion of the water to be re-used across the plant as required.

Clean TeQ Solution 

Clean TeQ uses a unique precipitation process to remove antimony and arsenic to very low levels. Hardness and sulphate are removed using a two-stage continuous ion exchange process (DeSALx®). A low volume of sludge containing precipitated arsenic and antimony is produced by the precipitation system, and gypsum-based sludge is produced by the DeSALx® system. Water recovery is above 90%.

The system is also fully automated in order to achieve a consistent water quality across the required range of flow rates.

Simplified Process Flow Diagram of Clean TeQ Solution in the Fosterville Gold Mine

Result

The pictures shows a 3D model of the Clean TeQ treatment plant.