The present disclosure relates to recycling automotive phosphate rinse water. An apparatus and method is disclosed for treating process water containing phosphate. The apparatus may include a process water line. The process water line may be in fluid communication with a sample process water line. The sample process water line may be in fluid communication with a dilution line. The sample process water line, the dilution line, and a phosphate analyzer may be in fluid communication with a diluted process water line. The apparatus may also include a chemical additive feed line in fluid communication with the process water line downstream from the sample process water line.

An on-site decentralized wastewater treatment system for treating phosphorous-containing wastewater including a sedimentation chamber and an anaerobic treatment system and/or an aerobic treatment system, along with a recirculation system which recirculates treated wastewater within the treatment system. The system further includes a system for introduction of a chemical agent into the recirculation system for complexing the phosphorous-containing compounds present in the wastewater.

A modular and mobile unpressurized bioreactor for removing nitrate from water, and methods and systems thereof.

Multi-parameter water analysis system with a water parameter sensing device configured to wirelessly provide detector data and a smart phone displayable indicator of water analysis test results that are calculated by an analysis application that is updateable via a cloud-based data resource to account for a manufacturing change in indicator chemistry and/or an improvement in test result display. The water parameter sensing device includes an optical sensing apparatus configured to detect light from each of a plurality of indicators for different parameters when the indicator and a chemical parameter are exposed to each other, a processor to process information of the detected light, and wireless communication circuitry for communicating detector data based on the information about the detected light to a remote device. Social networking of water quality data allows sharing to other users.

High levels of polyhydroxyalkanoates (PHA) can be produced from wastewater comprising Readily Biodegradable COD (RBCOD) using activated sludge comprising microorganisms capable of accumulating PHA by contacting the wastewater with the activated sludge in the presence of dissolved oxygen during a first period of time, to obtain PHA-loaded activated sludge, and then supplying elements essential for growth such as nitrogen and phosphorus and allowing up-take of these elements and limited growth during a second period of time, the supplied amount of at least of one of said essential elements compared to the amount of RBCOD supplied in step a) limiting the growth to an extent that not all PHA is used for growth, to obtain grown activated sludge; and removing or harvesting part of the PHA-loaded activated sludge and/or part of the grown activated sludge, so that the total average retention time of the sludge is less than 72 h.

An enhanced granular sludge bed (AGBR) process for wastewater treatment, including use of fluidized bed media and process control by regulating redox reaction conditions, is provided. Further embodiments may relate to multiple stage biological processes with fluidized bed media for simultaneous removal of carbon and nutrient from wastewater.

Systems and methods for enabling dynamic volumetric transitioning and segmentation of treatment conditions are disclosed. Such treatment conditions may include, by way of example, systems and methods for dynamically transitioning treatment environments within a reactor for activated sludge treatment processes. Such environments may include anaerobic, anoxic, fermentation, suboxic, and aerobic environments.

Disclosed herein is a unit for a salt water pool chlorinator that is arranged for water to flow therethrough. The unit is configured for an electrode assembly to be received therein and is arranged such that some of the water flows through the electrode assembly. The unit has a channel, defined by a barrier impermeable to water, arranged for some other of the water to flow through the channel. At least one port may be arranged at the channel whereby at least one of a sensor, a feeder and an extractor can use the port to respectively detect, feed into and extract water in the channel.

A process for biological nutrient removal including: receiving fluid having sludge in a basin through a sludge inlet; activating an aeration system based at least partially on a time of day; periodically measuring a potassium level of the fluid; determining a potassium rate of change based on the periodic measurements of potassium level; and deactivating the aeration system based at least partially on the determined potassium rate of change. A system for biological nutrient removal is also disclosed.

A system for reducing algae blooms and microbial growth in aqueous systems is disclosed. The system includes a phosphates adsorption container having an ingress and an egress and a phosphates adsorption element contained therein for gathering and removing phosphates as phosphates-rich influent water flows through the phosphates adsorption container thereby producing low phosphates concentration effluent water. The system also uses a first solution combining the phosphates gathered from the influent water producing a phosphates-enriched first solution and for restoring high loading capacity for adsorption of phosphates properties and high attraction to phosphates properties of the phosphates adsorption element. The system includes a first solution recovery element for receiving the phosphates-enriched solution and for separating the phosphates from the phosphates-enriched first solution.