A method for treating wastewater involves electrolyzing a stream of seawater and wastewater mix within one or more electrolytic cells mounted outside a batch tank. The electrolyzed stream is piped to a quelling chamber which is mounted above the batch tank. A diluted polymer solution is injected at upstream of an in-line mixer piping into the quelling chamber substantially concurrently with the electrolyzed stream. The polymer solution and the electrolyzed stream are dispersed as a fine shower over residual seawater and wastewater in the batch tank. The polymer solution facilitates flocculation of the suspended solid particles and creates a distinct buoyant layer of flocculated solid particles attached with micro bubbles. A substantially clarified effluent is separated from the flocculated layer and neutralized prior to discharge. The flocculated layer is pumped from the batch tank to a dewatering system where entrained solids are compacted to a desired level. A centrate generated during the solids/sludge dewatering step is recirculated to the batch tank prior to addition of seawater during a subsequent treatment cycle as a supplement to the seawater.

A method for treating wastewater involves electrolyzing a stream of seawater and wastewater mix within one or more electrolytic cells mounted outside a batch tank. The electrolyzed stream is piped to a quelling chamber which is mounted above the batch tank. A diluted polymer solution is injected at upstream of an in-line mixer piping into the quelling chamber substantially concurrently with the electrolyzed stream. The polymer solution and the electrolyzed stream are dispersed as a fine shower over residual seawater and wastewater in the batch tank. The polymer solution facilitates flocculation of the suspended solid particles and creates a distinct buoyant layer of flocculated solid particles attached with micro bubbles. A substantially clarified effluent is separated from the flocculated layer and neutralized prior to discharge. The flocculated layer is pumped from the batch tank to a dewatering system where entrained solids are compacted to a desired level. A centrate generated during the solids/sludge dewatering step is recirculated to the batch tank prior to addition of seawater during a subsequent treatment cycle as a supplement to the seawater.

The present invention relates to intelligent oil sludge treatment apparatuses and treatment processes. The treatment apparatus includes an integrative device, an oil removal device, a separation device, a sludge collection tank, a dewatering device, a pyrolysis device, an agent tank, a deodorization tower, a crude oil tank, a light oil tank, a separator, a condenser, a desulfurization tower, a clean water tank, a sewage station, and a steam boiler, where an outlet of the integrative device is connected to an inlet of the oil removal device; the oil removal device is configured to remove crude oil from oil slurry; the oil removal machine collects the crude oil to the crude oil tank, discharges stench into the deodorization tower, and discharges the slurry into the separation device; and the separation device is configured to perform a solid-liquid separation operation.

A polyhydroxyalkanoates extraction system comprises a pretreatment subsystem, an extraction subsystem and a recycling subsystem. The pretreatment subsystem comprises a fermentation device and an activation device so as to carry out a microorganism acclimation process. The extraction subsystem comprises a freezing device, a pretreatment device and an extraction device. The extraction subsystem is used for receiving a third sludge so that the third sludge is subjected to a freezing process, a pretreatment process, an extraction process and a purification process in the freezing device to form a polyhydroxyalkanoates mixture, and the extraction device performs a precipitation process to generate polyhydroxyalkanoates precipitate. The recycling subsystem comprises an aerobic sludge digestion device and a sequencing batch reactor activated sludge treatment device so as to carry out an aerobic sludge digestion process and a sequencing batch reactor activated sludge process.

A method of producing a final product from a wastewater dissolved air flotation (DAF) sludge which includes the following dewatering step: 5—dewatering of the sludge, an aged sludge or a pre-processed sludge to produce a sludge filter cake and a filtrate; such that the pre-processed is sludge, or aged sludge, that has undergone additional processing steps prior to dewatering and aged sludge is sludge that has been stored for a period of time, wherein the dewatering step is a mechanical dewatering step 10 carried out at a maximum of 30° C. which results in a sludge filter cake that does not flow under its own mass.

A method of producing a final product from a wastewater dissolved air flotation (DAF) sludge which includes the following dewatering step: 5—dewatering of the sludge, an aged sludge or a pre-processed sludge to produce a sludge filter cake and a filtrate; such that the pre-processed is sludge, or aged sludge, that has undergone additional processing steps prior to dewatering and aged sludge is sludge that has been stored for a period of time, wherein the dewatering step is a mechanical dewatering step 10 carried out at a maximum of 30° C. which results in a sludge filter cake that does not flow under its own mass.

Methods and systems for recovering high-value target ions such as lithium ions from a brine solution, wherein a target-ion-selective adsorbent material (such as bound or unbound adsorbent particles) are mixed with the brine solution to form a slurry, and the slurry is contacted with a filter to capture target-ion-enriched material, which target-ion-enriched material is then contacted with a stripping solution to separate the target ions from the target-ion-enriched material.

A process for co-depositing tailings streams and/or tailings products is provided comprising providing a tailings containment structure; and co-depositing at least two different tailings streams and/or tailings products into the tailings containment structure.

A zero-liquid discharge (ZLD) wastewater treatment apparatus is provided. The ZLD wastewater treatment apparatus includes a concentrator configured to concentrate wastewater to produce a primary concentrate, an evaporation crystallizer configured to concentrate and crystallize the primary concentrate to produce a secondary concentrate, a cooling crystallizer configured to cool the secondary concentrate to generate crystals from the secondary concentrate, a dehydrator configured to separate the product produced by the cooling crystallizer into a solid component and a liquid component, and a cooling system configured to cool the secondary concentrate introduced into the cooling crystallizer, wherein the liquid component produced by the dehydrator heat exchanges with a cooling medium in the cooling system and returns to the evaporation crystallizer.

The present invention provides a method and a system for processing of waste by anaerobic digestion, said method comprising pre-treatment of a first biological waste stream by thermal hydrolysis and processing of a solid fraction by pyrolysis prior to anaerobic digestion.

The present invention allows for efficient utilization of the energy available in biological waste sources. The method provides an energy efficient method for processing of biological waste having a high degree of recovery of the energy stored in the waste material, wherein the flow of material may be dynamically adjusted to e.g. achieve end products in preferred ratios.