Methods of recovering nutrients from a high nitrogenous liquid waste are disclosed. The methods include collecting the high nitrogenous liquid waste, introducing the high nitrogenous liquid waste and an oxidant into a reactor to produce oxy-anions of nitrogen, maintaining a predetermined pH to control concentration of the oxy-anions of nitrogen, and concentrating the liquid to produce a concentrated product and a dilute water. Systems for recovering nutrients from a high nitrogenous waste are also disclosed. The systems include a solids-liquid separator, a reactor having an inlet fluidly connected to the solids-liquid separator and an inlet fluidly connected to a source of an oxidant, a pH control subsystem, and a dissolved solids concentrator.

The present disclosure describes a microorganism support structure, including a gas-permeable layer comprising two opposing surfaces; a microorganism adhesive coats at least one surface of the gas-permeable layer; and a microorganism disposed on the microorganism adhesive-coated surface of the layer. The microorganism adhesive enhances the adhesion of the microorganism on the layer compared to a gas-permeable layer that does not have the microorganism adhesive.

A method of operating a sequencing batch reactor process includes introducing wastewater to be treated into the sequencing batch reactor and subjecting the wastewater to treatment in the sequencing batch reactor in an aerated anoxic mode in which a quantity of oxygen is supplied at a level insufficient to meet a biological oxygen demand of the wastewater, but sufficient to cause simultaneous nitrification and denitrification reactions to occur in the wastewater.

A system and method for treating wastewater includes two or more biological reaction zones separated by chamber walls. The system and method for treating wastewater includes static recycle of a mixed liquor from a second biological reaction zone to a first biological reaction zone.

A system and method for treating wastewater includes two or more biological reaction zones separated by chamber walls. The system and method for treating wastewater includes static recycle of a mixed liquor from a second biological reaction zone to a first biological reaction zone.

Methods and systems are provided herein for treating wastewater, such as wastewater from oil and natural gas production. Distilled water may be treated with bacteria and other micro-organisms to remove nitrogen compounds from the distilled water. The distilled water may be produced from pretreating and distilling wastewater. The treatment steps of the distilled water include subjecting the water to microbial action under both anoxic and aerobic conditions and employing a membrane bioreactor to further purify the water. The purified water is still further purified by either reverse osmosis or ion exchange systems.

A method and a kit for determining the amount of anammox bacteria in a bioreactor, comprising the steps of: i) removing a sample from the bioreactor; iii) mixing the sample with alkali; v) heating the samples to at least 60° C.; vi) separating solid components; vii) adding a reducing agent to the liquid phase; viii) measuring the translucence of the liquid phase in a spectrophotometer at three wavelengths ranging from 500 to 600 nm; ix) comparing the measured translucence to a reference spectrum.

An operating method for a batch process, the batch process comprising a plurality of operating phases and within each phase there is provided at least one operating mode, one of the modes of each phase being a standby mode or its equivalent, wherein a transition from a first phase to a second phase requires that the first phase be initialised to its standby mode or equivalent and upon completion of the phase change the second phase enters its standby mode or equivalent.

An operating method for a batch process, the batch process comprising a plurality of operating phases and within each phase there is provided at least one operating mode, one of the modes of each phase being a standby mode or its equivalent, wherein a transition from a first phase to a second phase requires that the first phase be initialised to its standby mode or equivalent and upon completion of the phase change the second phase enters its standby mode or equivalent.

A method of treating wastewater is disclosed in which a flow equalization reactor is provided that includes at least one wastewater treatment zone. A first wastewater treatment process is performed in the at least one wastewater treatment zone, which can be switched to a second wastewater treatment process. The flow equalization reactor is designed with a variable liquid depth and volume that can operated as a mixed wastewater zone, an anaerobic reactor zone, an anoxic reactor zone or an aerobic reactor zone. The equalization reactor provides sufficient variable liquid depth and volume above a minimum liquid depth and residual volume to provide the necessary hydraulic flow equalization or surge volume to achieve a relatively constant effluent pumping rate or feed forward flow rate over 24 hours per day, seven days per week into the downstream biological treatment processes, clarifiers, filters, or disinfection units, etc.