For nearly 40 years Chokhavatia Associates has been a leader in the civil and environmental engineering sector. The company was established with the vision to provide environmental science & engineering project services to various industries with the goal of promoting sustainability and environmental stewardship. Chokhavatia Associates has extensive experience designing and implementing environmental engineering services for a diverse range of industries.

Engineering Science Projects

Industrial wastewater is the water created during an industrial processes which is often contaminated with biological and chemical compounds related to the specific industrial process. Each industrial wastewater effluent is unique and requires an individual solution to meet the treatment standard for water discharge, while complying with environmental regulations and minimizing costs for the industrial plant. Chokhavatia Associates has the experience to implement innovative solutions for any wastewater effluent that requires treatment.

Environmental Engineering Services

The design of sewage treatment plants to address municipal and industry sewage are often much larger than industrial effluent treatment plants because they are centralized. Sewage treatment plants often include a clarifying treatment, which settles out large particles and an activated sludge process to minimize the waste produced.

The goal of drinking water treatment plants is to clean water to a level that is safe for potable use. The source of the drinking water is chosen for quality to minimize the treatment required to bring the water to drinking water standards. Drinking water is extracted from surface waters or groundwater and pumped to a treatment plant for processing. Each drinking water treatment plant is unique and many factors are considered in the design. Generally water treatment to drinking water standards requires several sequential treatment processes based on the contaminants present in the source water.

Aeration – Aeration can occur mechanically with mixers or by the movement of water between different elevations or over baffles to increase the oxygen content in the water and to vent undesirable gases.

Coagulation – Coagulation occurs by adding chemical polymers that clump smaller particles into larger particles, which are heavier and easier to settle.

Sedimentation – Sedimentation occurs after coagulation where the water is moved slowly through a basin and particles are settled to the bottom. The water exits the basin at a height above the bottom of the tank so the water has significantly less particles.

Filtration – Filtration occurs by passing the water through filters that are made of sand, carbon or membrane filters. When the water makes contact with the filters small particles attach to the filter media and are removed from the water.

Disinfection – The water is disinfected by using chemicals like chlorine or other systems like ozonation and ultraviolet light. The goal of disinfection is to have the water in contact with the disinfection component for a long enough time to remove all potential pathogens.

Storage – After treatment the water is stored safely in covered tanks. The water is occasionally is stored in a water tower to create pressure that is distributed to the water supply piping network.

Pristine drinking water sources may only require aeration and disinfection, while other water sources may require nearly all of the treatment processes to meet the standards for potable water.