HWTR, LLC products can reduce treatment cost by as much as 50% or more over traditional off-the-shelf formulations used by big water treatment companies. New treatment strategies, unique formulations, a new co-polymer for silica and metal silicate scale control, an enhanced polymaleic acid inhibitor, all can make a big difference in performance and results.
Enhanced scale control formulations are available for mining leach solutions and mill water, geothermal brine, brackish/saline water membrane systems, cooling water, and water reuse applications.
Ability to screen new product formulations in the lab and develop site-specific products that perform better and save money.
Interested in saving money and getting better results, call 480-450-7306, or pheinstein@hwtrllc.com
Mining Process
Gold mine cyanide heap leach - CIC & Merrill Crowe processes - treatment products for barren, pregnant solution, and strip circuit processes
Control of CaCO3, CaOH, MgSiO3 using HWTR8891 for CIC/CIL/leach circuit and HWTR8892 for strip circuit process. HWTR8894 is a new product with the performance of 8891 but includes evaporative deposit (NaCl and NaSO4) inhibitors to protect drip lines in hot - dry climates like southern California and southern Nevada.
HWTR8896 is a new antiscalant formulated to reduce costs using raw materials sourced in the USA. This product helps offset rising raw material cost and availability associated with the current global supply chain issues.
HWTR8897 is a low cost old-school formulation for leach solutions where calcium based deposits and/or evaporative deposits occur and solution pH is 10 or less with OH alkalinity below 150 ppm.
HWTR8821 is a three-component product in situations where calcite saturation is elevated and there is also a high probability gypsum will precipitate.
CaCO3, metal silicate and Ca/Ba sulfate control.
Copper heap leach
CaSO4 control.
HWTR8893 will pass SX phase separation and kinetics compatibility tests.
Mill water scale control
CaCO3, silicates, Ca/Ba sulfate scale control.
Enhanced formulations are compatible with flotation reagents.
Leach and dewatering aids
Wetting/surface tension reduction products to improve solution leach rates in high hardness and alkalinity solutions.
Also dewatering aids for pressure and vacuum filters.
Mercury precipitation product
Evaporative deposit control
Autoclave scrubber gypsum deposit control
Geothermal Power Generation
Scale and corrosion control for binary, flash, and hybrid plant configurations
Brine treatment for production wells, surface, and injection wells
Advanced silica and metal silicate scale control products formulated with a new, novel co-polymer.
All scale control products are acid neutralized to a pH of 7.5 to 8.0 to minimize corrosion potential.
HWTR1512 is a blend of inhibitors with our new co-polymer and the addition of a sequestering agent. Very effective product in controlling silicate deposits in binary units where pH has risen above 8.0 following loss of CO2 in a flash-to-binary configuration.
Products for control of carbonate and sulfate based scales.
Low cost Ca and Ba sulfate inhibitor for acidic brines.
Scale control programs for surface and well field applications designed to reduce cost by separating the co-polymer component from the inhibitors, this allows for optimization of component ratios to the site-specific brine chemistry right in the field, no more trial and error chasing the correct ratios with expensive blends.
Corrosion inhibitors for aggressive brine conditions where CO2, H2S, and chlorides are a problem. The imidazole based HWTR6000 is less expensive than the competition and three-times more effective in high salinity brines. Freeze point is less than 5 deg F so this product can be used in colder climates without the need for heating blankets and heat tracing of injection lines.
HWTR6003 is also an imidazole based corrosion inhibitor, formulated specifically for production wells with two-phase flow.
New, all-in-one corrosion/scale control products that eliminate multiple storage and feed systems, these products also resolve issues with antiscalant capillary tube plugging.
Other new products are coming, including a corrosion inhibitor for strong acid brines and production wells on acid feed for silica control where traditional film-forming inhibitors have not been effective.
UF/NF/RO
A new product, HWTR1000, for brackish/saline water membrane applications where CaCO3, calcium fluoride, Ca/Ba sulfate, colloidal silica, and metal silicates are a problem.
Low pH, acidic water antiscalant, HWTR8893, is also available for control of sulfate compounds and silica in membrane systems where the common phosphonate and co-polymer blends become protonated. Very good product for acid mine drainage applications (AMD) where there is a high concentration of dissolved metals and a CaSO4 scaling concern on the membranes.
HWTR1002 is PCA/PAA based product for gypsum control in membrane process used for Li concentration applications.
Custom membrane cleaning formulations are available.
Cooling Water/Water Reuse
Site specific antiscalant products can be formulated for high cycle cooling tower and water reuse applications, particularly important in water limited geographies in the SW where silica is a major limiter to tower cycles
Laboratory cooling pilot studies
Integrated membrane treatment strategies for high recovery rates on cooling blowdown (high silica) and waste water streams that reduce flow to evaporation ponds to meet long-term plant water balance requirements
Integrated membrane processes are easier to operate and more cost effective than the first generation zero liquid discharge systems. As infrastructure in these older plants nears 20 years plus of operation, replacement with an integrated membrane process might be of interest. The HERO process which is the commonly found high silica removal process in the power industry can easily be converted to our low pH high silica process with minimal changes to the existing process equipment and flow. The low pH process is easier to manage, produces consistent results, and operating costs are significantly less. Interested in finding out more, please call 480-450-7306.
Success the last 7-years at processing 175 ppm SiO2 cooling blowdown as feed at 60% recovery using a unique treatment approach and the HWTR1000 antiscalant. A new permanent 500 gpm UF to high pressure RO water plant is currently in service at a power plant in Arizona as a result. Over 200M gals of cooling blowdown have been treated in the last 36 months - water reuse and conservation as Arizona grows. The ability to process additional cooling blowdown has taken the load off the brine concentrator systems and decreased levels in the evaporation ponds resulting in a workable water balance with the reliability to operate at full capacity factor in the heat of the summer when power demand is at peak. This new water plant is also designed to take well water (high iron levels) for demin production, and to process contaminated demin storage water (colloidal silica) that originated as distillate from the brine concentrators. The RO system can be run in single or double-pass, and the building is set-up to accommodate two demin trailers at a time. A novel treatment process and plant with the flexibility to process multiple water sources to desired end use quality - the next generation in water reuse capability is here.
Our second low pH membrane process for high silica water was commissioned this year at a defense contractor in California, 100 gpm single pass RO system with silica in the 125 ppm range in the feed operating at 60% recovery. The driver for this installation was to reclaim cooling blowdown and to reduce city sewer discharge fees/make-up water fees. We also installed a boiler water feed RO, same size, 100 gpm to reduce costs associated with sending city water to demin bottles. Similar story of water reuse and conservation along with a decent ROI to drive the project to completion.
Do you have a full evaporation pond and no where to put the water limiting production? Call me at 480-450-7306, or pheinstein@hwtrllc.com, I can help find answers when the big water companies just can’t get the job done.