Methods for generating methane from animal waste by anaerobic digestion using bacteria. A screen separator removes suspended solids greater in size than a predetermined size ranging from about 50μ to about 150μ. An electrocoagulation unit electrochemically hydrolyses the waste, causing particles to settle out. A dissolved carbon air flotation has a CO.sub.2 bubbler for separating large particles from small particles by flotation. An anaerobic digester produces biogas. The digester has a biocurtain for growing the bacteria and a heat exchanger for heating the bacteria. The biocurtain surface is convoluted to retain the bacteria. A membrane module removes CO.sub.2. A knock out pot for removes droplets of water. A scrubber removes water vapor, particulates, and contaminant gas. A compressor boosts pressure. A gas chromatograph monitors the biogas composition. A flare skid lowers excess pressure for safety. Biogas is injected into a local pipeline system. A process control is used for controlling the anaerobic waste digestion system.

Provided is a separator comprising a chamber having a chamber wall opening, and an inlet module comprising an attachment portion and a projecting portion, the attachment portion is coupled to the chamber wall and comprises an inlet for receiving liquid, the projecting portion comprises an outlet configured to create a circulating flow about a central axis of the chamber, the projecting portion is offset from the attachment portion, a first wall is formed between the projecting portion and the chamber wall, a second wall opposes the first wall, a first side wall and a second side wall oppose each other and connects the first and second walls, the second side wall is continuous and the first side wall defines the outlet, the outlet is directed tangentially with respect to the central axis and wherein liquid exits the inlet module in a tangential direction with respect to the central axis.

A screw type separation device includes: a casing that has a separated liquid discharge port on one end part side and has an object discharge port on the other end part side, while the other end part side is positioned lower, in terms of vertical directions, than the one end part side; a screw shaft provided inside the casing; a first screw blade; and a second screw blade that forms a first space between one face and the first screw blade facing the one face and forms a second space between the other face and the first screw blade facing the other face.

A method of recycling waste water from an offshore grouting process is provided. The method includes the steps of receiving waste water from a grouting equipment cleaning process, passing the waste water into a settling tank where sediment is separated from the waste water, removing water from the settling tank, and re-using the water removed from the settling tank.

The invention relates to an electrolytic reactor, in particular for separating phosphate from phosphate-containing liquids and/or recovering phosphate salts, comprising an inlet (16) for an electrolysis liquid and a flow channel (20) adjoining same, a magnesium metering unit (12) comprising two electrodes (22, 24) of different polarity being arranged in the flow channel (20), at least one of the two electrodes (22, 24) being a sacrificial electrode (20), wherein the magnesium metering unit (12) is designed as a free-level reactor and a mixing/sedimentation unit (14) being connected downstream of the magnesium metering unit (12) in the direction of flow, said mixing/sedimentation unit having a feed inlet (40) for the phosphate-containing liquids and an outlet (26) for the purified liquid for the obtained phosphate product.

A treatment for a large body of water to make the water suitable for recreational purposes is disclosed. A sedimentation zone and a dissipation zone are designated in the water body. A disinfection method based on a CT index and a flocculant composition are utilized in the sedimentation zone to aid in the settling of different microorganisms and/or contaminants. Also, the water in the sedimentation zone is minimally disturbed to facilitate the sedimentation process. A permanent chlorine residual is maintained in the dissipation zone by adding an efficient amount of a chlorine disinfectant such that at least a 0.5 mg/L free chlorine level is maintained in the water volume. Water is injected into the dissipation zone by means of one or more inlet nozzles. Along with natural currents produced by winds and water temperature differences, a water dissipation pattern from within the dissipation zone into the sedimentation zone is generated.

A treatment system and method for cephalosporin wastewater are disclosed. The treatment system includes: a flocculation and sedimentation device, an alkali reaction tank, a PAC reaction tank, a PAM reaction tank, a wastewater heat exchanger, a wastewater heater and an oxidation reactor that are connected with each other in sequence, wherein the wastewater heat exchanger is provided with a material inlet, a material outlet, a heat source inlet and a heat source outlet. An oxidized water from the oxidation reactor enters the wastewater heat exchanger from the heat source inlet, the heat source outlet is connected with a product canister, the product canister is connected with a membrane filtration device to realize concentration treatment of a landfill leachate, the material inlet is connected with the PAM reaction tank, and the material outlet is connected with the wastewater heater. An outer side of the oxidation reactor is provided with a micro-interfacial generation system for dispersing and breaking a gas into bubbles. The treatment system of the prevent invention improves the contact of reaction phase interfaces after arranging the micro-interfacial generation system, which ensures a good wastewater treatment effect under relatively mild operating conditions.

A method of concentrating sediment in a water tank involves attaching a vortex inducing device to an opening through the roof of the tank between the central vertical axis and the side walling of the tank. The device has a device inlet which narrows to a device outlet. The device outlet is orientated such that, water flowing out via the device outlet induces a vortex within the pooled water, thereby causing sediment to collect centrally on the floor of the tank.

A wastewater treatment equipment and a treatment method of a wastewater are provided. The wastewater treatment equipment includes: a microfiltration unit, configured to receive and filter a wastewater to obtain a solution; a membrane salt separation unit, configured to receive the solution and separate monovalent ions and multivalent ions from the solution to obtain a first solution including the monovalent ions and a second solution including the multivalent ions; a first evaporative crystallization unit, configured to crystallize the first solution to form a monovalent salt; and a second evaporative crystallization unit, configured to crystallize the second solution to form a mixed salt; the microfiltration unit is connected to the membrane salt separation unit, and the first evaporative crystallization unit and the second evaporative crystallization unit are both directly connected to the membrane salt separation unit, the wastewater treatment equipment can achieve the standard discharge of wastewater.

The invention relates to a method for preferably continuous treatment and/or purifying of water encumbered by contaminants, in particular organic contaminants, preferably micropollutants and/or trace substances, in particular untreated water, preferably for purposes of producing and/or obtaining treated and/or purified water, in particular pure water, preferably drinking water and/or service water. The invention further relates to a water treatment system for carrying out said method and to applications thereof.