Wastewater Treatment Solutions

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Wastewater Treatment Plant

Decades of Experience Treating Complex, Industrial, & Municipal Wastewater

Industrial and municipal wastewaters contain various types of pollutants, such as biochemical oxygen demand (BOD), dissolved organic matter, fats and oils, nitrogen compounds, suspended solids, heavy metals, surfactants, and more.

RWL Water designs, builds, and operates treatment plants in full compliance with environmental regulations, meeting specific customer needs and maximizing the cost-effectiveness of the investment. RWL Water also supplies standardized, packaged wastewater systems, which are easily transportable and erected at the site. Packaged wastewater treatment systems can treat a range of wastewaters to match specified discharge limits.

RWL Water offers a wide range of treatment solutions, depending on the wastewater characteristics:

  • Aerobic biological treatment
  • Nitrogen and phosphorous treatment
  • Tertiary treatment
  • Disinfection treatment
  • Anaerobic treatment and biogas production

We provide market-specific expertise, customized for each project and region. With international operations, our experts can create an affordable and reliable solution, tailored to meet your organization’s needs.

Chemical-Physical Separation of Suspended Solids

When pollution is caused mostly by suspended or dissolved matter, RWL Water proposes the installation of separation systems including:

  • Dissolved Air Flotation (DAF), suitable for fats and light inorganic solids
  • Sand filtration with high filtering capacity of suspended solids (e.g., waste from steelworks)
  • Traditional and ultra-compact lamella settlers

Aerobic Biological Treatment

For a consolidated and very widespread process such as activated sludge aerobic treatment, RWL Water offers technologically advanced, customized plants, with a high level of operational reliability, guaranteeing optimized energy consumption.

High-performance diffused aeration systems or mechanical surface aerators are chosen to ensure the most cost-effective final treatment solution. Treatment tanks are designed to maximize the transfer of oxygen and minimize overall negative impacts, such as inefficient air distribution, or the generation of aerosols and odors.

RWL Water biological plants are equipped with full instrumentation for real-time remote or on-site monitoring of key process parameters (flow, pressure, ORP, pH, dissolved oxygen, temperature, etc.).

Nitrogen Removal from Wastewater

The removal of large quantities of nitrogen from wastewater is one of the most costly problems in biological wastewater treatment. RWL Water has experience in the construction and operation of systems for wastewaters with high nitrogen loads, such as wastewater from slaughterhouses and livestock farms. RWL Water offers cost-effective solutions for treating high influent nitrogen concentrations down to a discharge level of less than 10 mg/l of total nitrogen.

Anaerobic Biological Treatment

For wastewater with high chemical oxygen demand (COD), RWL Water proposes anaerobic treatment, offering multiple advantages, including:

  • The production of biogas. For every kilogram of COD digested, 0.35 cubic meters of methane is generated, i.e., up to 1.5 kWh.
  • Savings of approximately 1.5 kWh per kilogram of COD because anaerobic COD abatement, by definition, does not require air.
  • The system produces 10 percent of the waste sludge of an aerobic treatment system with equivalent power, a very important savings considering sludge disposal costs.

Rapid Anaerobic Reactors

RWL Water has developed its own granular anaerobic sludge technology for use in organic pollution by soluble matter (soluble COD). Our EFC (external forced circulation) rapid reactor, applied in different industrial sectors, offers the following advantages:

  • Greatly reduced size, approximately one-tenth the size of an aerobic system with equivalent power
  • High operating stability, guaranteed by the external recycle
  • No pre-acidification stage, unlike other rapid reactors

Tipton Packaged Wastewater Treatment Plants

RWL Water supplies Tipton packaged and field-erected wastewater treatment plants for municipal, commercial, and many industrial wastewater applications. Tipton plants are reliable, odor-free, portable, reusable, partially preassembled, compact, self-contained, custom-configured, and designed specifically for each project. Typical applications for Tipton plants may include: municipal wastewater, hotels, motels, resorts, remote mine and construction sites, campgrounds and parks, highway rest areas and truck stops, apartment complexes, military bases, power stations, schools and universities, towns and small residential communities, and hospitals and nursing homes.

Features and Benefits:

  • High degree of treatment (85-90% of BOD/TSS removal)
  • Secondary treatment with high effluent quality
  • Tertiary filtration option for polished effluent
  • Prefabricated packaged plants with a flow range from 200 to 350,000 GPD (.032 to 55.3 m3/hr)
  • Field-erected packaged plants with a flow range from 50,000 GPD to 2 MGD (7.89 m3/hr to 315.45 m3/hr)
  • Extended aeration process technology
  • Above- or below-grade installation

RWL Water also offers a complete line of aeration equipment — including aerators, mixers, diffusers, and fountains — to improve the quality of water and wastewater. Our comprehensive line of aeration and mixer products include:

  • TORNADO® Aerator
  • HURRICANE® Mixer
  • TWISTER® Aerator
  • TYPHOON® Aerator
  • RIPTIDE™ Mixer
  • MONSOON® Aerator
  • ZEPHYR® IAF System
  • CYCLONE® Diffusers

Wastewater Treatment Case Studies

  • RWL Water designed and built a complete, multistage on-site water treatment system with zero liquid discharge for the Compañía Minera Doña Inés de Collahuasi SCM, or Collahuasi Copper Mine. This extensive mining operation extracts and refines copper and molybdenum ores. The operators sought to effectively treat the mine wastewater and maximize water reuse. The facility treats 216 cubic meters an hour, producing approximately 170 cubic meters an hour of produced water.
  • A 30-year-old Tipton packaged wastewater treatment plant in the city of Dillard, Georgia, needed to be upgraded to handle the increased flows from a growing city and to address new effluent discharge regulations. RWL Water engineers worked closely with project consultants to deploy a cost-effective design that combined existing tankage with new equipment. Ultimately, RWL Water delivered a cost-effective and timely upgrade solution, comprised of a 200,000 GPD (or 758 m3/day) extended aeration packaged wastewater treatment plant. Influent and effluent requirements for BOD5 and TSS were 250 mg/L: 250 mg/L and 20 mg/L:20 mg/L, respectively.

What wastewater treatment challenges can we help solve for you? Contact us for more information about our custom wastewater treatment solutions or to request a quote.