A preparation method of a resin-based iron oxide-containing composite phosphate removal adsorbent is provided. An alkaline anion resin is taken as a base, a potassium ferrate is used as an iron source, and a characteristics of ferrate ions easily adsorbed on a surface of the anion resin are utilized to prepare resin-based iron oxide-containing composite phosphate removal adsorbent by one-step in-situ hydrolysis precipitation, compared with the related art, a preparation process of the disclosure is relatively simpler, a time period is shorter, and a production cost is lower. It has a strong ability to eliminate interference from other anions in the waste effluents, and it has a strong adsorption capacity, fast adsorption speed and large adsorption capacity for the phosphate. Moreover, it has the advantages of strong regeneration ability and multiple repeated use times.

Disclosed are methods of treating wastewater using a membrane bioreactor and achieving a target phosphorus concentration for the membrane permeate stream. These methods include the steps of dosing a wastewater stream with a rare earth clarifying agent and passing the dosed wastewater stream through the membrane to obtain a membrane permeate stream with a permeate concentration that is less than the phosphorus concentration of the influent stream. This permeate concentration also can be equal to or less than a target phosphorus concentration. In the methods as disclosed herein, the rare earth clarifying agent can be chloride salts of one or more rare earth elements and in certain embodiments, the rare earth clarifying agent can be CeCl.sub.3 and LaCl.sub.3.

A system and method for treatment of wastewater, in which the system includes a blackwater reactor configured to receive a stream of blackwater influent, to contain the blackwater therein during treatment of the blackwater, to facilitate recovery of methane and nutrient precipitates therefrom, and to output partially treated blackwater, and a greywater reactor configured to receive a stream of greywater influent and the partially treated blackwater output from the blackwater reactor, to contain the greywater and the partially treated blackwater therein during greywater treatment, and to output greywater treatment discharge. The process includes inputting a stream of blackwater into the blackwater reactor; treating the blackwater in the blackwater reactor with an anaerobic digestion process; controlling a pH level of the blackwater within the blackwater reactor; recovering nutrient precipitates from the blackwater reactor, optionally independent of chemical additives; and recovering methane from the blackwater reactor.

The disclosure relates to devices and systems for configurable, contaminant-specific water filtration and treatment under pressure. In particular, the disclosure relates to a contaminant-specific configurable and modular water filter and a water filtration system maintained under positive or negative pressure, comprising modular housings, each housing defining a plurality of reconfigurable compartments operable to accommodate contaminant-specific filtering units in an order configured to minimize pressure drop along the flow direction of the water.

One aspect of the present invention is directed to a granular filter media for removing contaminants from water or other liquids. The media comprise granular materials comprising aggregate and remediation materials. Other aspects of the invention are directed to methods of making and using the granular filter media of the invention.

The invention relates to a new biological fluidized bed process with high concentration powder carriers used for the treatment of municipal wastewater, which is a fluidized bed system based on the principle of sewage biochemical treatment, by adding a compound powder carrier to the biochemical tank, and forming a high concentration mixture after mixing and microbial attachment; the sludge mixture after the reaction is concentrated and separated, and then enters the compound powder carrier cyclone separation and recovery system, which can separate most of the compound powder carrier from the discharged excess sludge, and then return to the biochemical tank for recycling. The highly integrated municipal wastewater treatment process proposed in the invention has high treatment efficiency, small occupation area, low operation energy consumption, and can realize the doubling of sewage treatment capacity and the improvement of effluent water quality without adding additional occupancy.

An adsorbent for phosphoric acid-based anionic substances, that contains foamed glass, and that has a Ca2p concentration of 7.5 atom % or more or a Na1s concentration of 5.0 atom % or less at the surface thereof as measured by XPS analysis, and a half-width of Si2p peak of 2.4 eV or more. The adsorbent can also have a specific surface area of 45 m.sup.2/g or more or a pore volume of 2.5 cm.sup.3/g or more as measured by mercury intrusion.

An object of the present invention is to provide a phosphorus adsorbent that is inexpensive and can exert high phosphorus adsorption performance. The present invention relates to a phosphorus adsorbent comprising incinerator ash, cement, and lanthanum.

The invention relates to a Novosphingobium sp. SJB007 and an application thereof in removal of phosphorus from wastewater, belonging to the technical field of environmental microorganisms. One aspect of the invention provides a Novosphingobium sp. SJB007 with an access number of CGMCC (China General Microbiological Culture Collection Center) No. 21177. Another aspect of the invention provides an application of the Novosphingobium sp. SJB007 in removal of phosphorus from wastewater. The efficient phosphorus-accumulating strain Novosphingobium sp. SJB007 provided by the invention has a high removal rate of more than 97% when the concentration of phosphorus in the wastewater is 10-30 mg/L under an appropriate condition.

The invention relates to a method and system for phosphate recovering from a waste stream, such as an animal manure waste stream. The method comprises the steps of: - providing a tank reactor, 5 - providing acidogenic bacteria and/or acetogenic bacteria and the waste stream to the tank reactor, - hydrolysing the waste stream, forming a reaction mixture; - providing a gas flow to the reaction mixture for removing carbon dioxide from the reaction mixture; 10 - providing the reaction mixture to an anaerobic sludge reactor, - removing a compound comprising phosphate from the reaction mixture within the anaerobic sludge reactor, and - removing gas from the reaction mixture within the anaerobic sludge reactor.