Waste Collection and Treatment Process

We carefully screen and clean waste water under the strictest standards.

From collection to treatment to final discharge, our operational procedures ensure that:

• Wastes are treatable by our facilities and approved for treatment pursuant to city permits. Review a listing of the various types of liquid waste that are collected and disposed of at our facilities.
• Approved and accepted wastes are thoroughly treated and disposed of according to strict governmental regulations and rigorous environmental standards.
• Everything is documented completely and filed properly with the local government.
  

All of our non-hazardous liquid waste treatment facilities are fully licensed and permitted by state and local governments. These facilities use physical separation, chemical and biological treatment and sludge dewatering technologies to remove solids and other contaminants before discharging a treated effluent to the sanitary sewer that meets the pretreatment requirements of their respective local city governments. Recyclable materials such as oil and grease are captured and made available for beneficial reuse, typically as a fuel. All remaining solids are normally sent to an EPA Subtitle D approved landfill for final disposal, frequently as a landfill ground cover. In addition, there is a growing potential for grease trap waste solids in alternative environmental friendly disposal methodologies such as composting and biogas recovery.

Waste Acceptance
Each vacuum tank (pumper truck) load is manifested with a Liquid Environmental Solutions trip ticket. Upon arrival, Liquid Environmental Solutions's lab technicians retrieve a sample which is run through a comprehensive series of tests to confirm that the waste material is consistent with the pre-approved sample taken at your business site. All approved material is offloaded inside the treatment facility’s main processing building.

Waste Treatment Steps
The first step in treating non-hazardous liquid waste involves the separation of core solids - typically by passing the waste through rotary drum screens. As the waste moves through the screens, free liquids are released. The trapped solids are conveyed to a holding tank and are eventually delivered to a local approved landfill.

Next, the liquid waste is chemically treated in a series of floculators, which are containment tank systems which cause the fine suspended solids to coagulate and settle. The sludge is then dewatered, typically by utilizing gravity separation and then waste passage through a plate and frame filter press. Solid cakes are formed which must pass the Environmental Protection Agency's “paint filter” test, a screening that assures no free liquids are present. The material is then sent to a locally approved landfill.

The residual liquid that is left from the chemical and physical process of solids removal is then normally sent through a chemical treatment process to ensure the remaining wastewater meets all local, state and federal water guidelines before it is disposed of in a city sewer. In addition, at select facilities the water passes through a biological system. The waste material that remains in treated wastewater as it ends our treatment processes is mostly dissolved organic material. We “feed” this material to microorganisms in the biological system. This in effect “polishes up” the water and makes it ready for discharge. The solids produced in this system are separated out. The resulting purified water is then discharged into the sanitary sewer once it has met stringent city guidelines for effluent.