WASTE WATER TREATMENT

Offline settling tanks are designed to concentrate solids by utilizing gravity. Our offline settling tanks can be operated as continuous flow or as a batch settler. Continuous flow settling tanks are designed to receive backwash flows which are introduced to the offline settling tank in a way to minimize turbulence. Water flows in a downward direction and overflows a weir at the top circumference of the settling tank. When designed properly these settling tanks can hold solids for over a month before they need to be emptied while reducing TSS over 95%.

Batch offline settling tanks are designed to receive a backwash from a filter and hold it for predetermined amount of time. The settling period is predetermined based on the the settling velocity of the smallest particles being targeted for removal and can take several hours. Over this time period solids will settle in the cone bottom of the tank. Upon satisfying the settling period, a actuated valve will open draining the tank of clean water by gravity just above the cone. The high solids water in the cone is then pumped to sewer or for further concentration. The system is fully automated and typically used in applications where large infrequent back washes are received. Batch offline settling tanks work well in applications where back washes are infrequent, high in volume, and must be sent a municipal sewer treatment facility.

Our geotextile dewatering systems are designed to capture, concentrate, and consolidate solids from commercial scale aquaculture facilities. A single facility can have 20 or more waste streams from various solids removal devices that must be consolidated into a single stream for treatment. 30% of aquaculture feeds will be released as solids in addition to solids collected in filtration processes for facility influent. Oceans Design will help decide on the best strategy to deal with your waste stream. Many factors will determine what is best for your facility including your daily production of waste in kg of solids, disposal options, government regulations, and water availability. With our geotextile systems a facility can reach 100% recirculation minimizing the need for new water.

The quality and quantity of waste water entering sewers, storm drains, bays, and oceans maybe highly monitored and regulated by city, state, and federal agencies. In many cases discharge permits along with waste water monitoring are required for any commercial and industrial operation. Even research facilities which typically have discharge flows meeting regulatory concentrations for all water quality parameters may be required to treat their discharge flows further. This is especially the case when working with species which are not endemic to the region or considered an invasive species. Sterilization and micro filtration are required by the State of California to work with such species. Oceans Design works with it's clients to establish filtration strategies that will meet government regulations for variety of parameters.