35 results about "Septage" patented technology

A process and apparatus for the treatment of septage, particularly grease trap waste, is disclosed. The inventive process will convert the septage into Biosolids (sludge) and water dischargeable to the environment. The treated septage achieves pathogen reduction, and reduced vector attraction. Treatment of septage by pasteurization causes the destruction of harmful pathogens. Pasteurization of septage having high water content provides for even temperature elevation and distribution of heat within the thermal mass of the septage allowing for consistent pathogen destruction. An alkaline compound is utilized to form a filter cake from the solids fraction of the pasteurized septage preventing vector attraction, while producing a beneficial bio-solid. The liquid fraction of the septage is treated by biological process allowing for its discharge into the environment.

A process for the treatment of septage, particularly grease trap waste, is disclosed. The inventive process converts septage into sludge usable as a bio-fuel. The conversion of the septage makes it desirable as an alternative fuel source, as the sludge has a high BTU value due to the large percentage of grease in the septage.

A septage treatment system and process designed to eliminate liquid discharge to groundwater. The system and process use primary treatment, secondary treatment, and tertiary treatment. The tertiary treatment uses a greenhouse system to reclaim septage waste after it has gone through primary and secondary treatment. The greenhouse system fosters ecologically sound usage of septage waste to minimize the environmental impact of septage waste.

The invention provides a method for removing high ammonia nitrogen from pig farm dry manure cleaning livestock wastewater. The method comprises the following steps: firstly, physically separating ammonia nitrogen from livestock wastewater through a mechanical grid and a solid-liquid separator to obtain residue-isolated wastewater; performing anaerobic fermentation, and performing two-stage hypoxic-aerobic biochemical treatment in order that the nitrogen removal efficiency can be up to 90-95 percent; lastly, arranging a breakpoint chlorination pond at the water outlet of a secondary biological sedimentation pond, and adding a sodium hypochlorite solution once an ammonia nitrogen value exceeds a design value in order to ensure complete removal of the ammonia nitrogen from the wastewater. The method has the advantages of stability, reliability, high automation degree, low running cost, low labor intensity and high impact load resistance, and is worthy of popularization and application. By adopting the method, discharge of the ammonia nitrogen up to standards can be ensured continuously and stably for a long time.

The present invention generally includes a septage treatment system comprising: (a) a primary treatment process system comprising: (1) a receiving station adapted to receive septage from a vehicle and to pump the septage; (2) at least one equalization tanks adapted to receive septage from the receiving station; and (3) at least two mixing and odor control tanks adapted to receive septage from the equalization tanks, and to generate waste activated sludge; (b) a primary settling tank adapted to receive effluent from the mixing and odor control tanks, and to generate waste activated sludge; (c) a secondary treatment process system adapted to receive comprising: (1) at least one aeration tank adapted to receive waste activated sludge from the primary treatment process system and to generate water effluent; and (d) a tertiary treatment process system adapted to receive comprising: (1) at least one wetland ditch adapted to receive water effluent from the aeration tank and to generate filtered water effluent; (2) at least one wetland pond adapted to receive filtered water effluent from the at least one wetland ditch and to generate filtered water effluent; and (3) an aquaculture hydroponics and sand bed greenhouse adapted to receive filtered water effluent from the at least one wetland pond and to generate filtered water effluent.

Treatment of an aqueous solution to yield a product is more desirable for disposal by an advanced oxidation process. Ozone is mixed with the solution, and maintaining at an elevated pressure for a time. The process may include recirculation past injector that injects ozone into the solution. Influent may be sewage, septage, leachate, ballast, and so on. The process disinfects and/or denutrifies the effluent. It may include (a) back-to-back processing of batches (b) overlapping processing with a previously treated batch (c) off-gassing (d) repetitive high pressure and low pressure cycles (e) post processing steps, such as retention without addition of ozone for a period of time to permit flocculates longer to form (f) post process filtering to remove flocculates (g) simultaneous post-processing of one batch while another batch is being processed. The process may include the treatment of solutions containing pharmaceuticals.

A batch process for the treatment of an aqueous solution so that the treated product is more desirable for disposal includes obtaining an influent batch of aqueous solution for treatment, treating the batch of solution by an advanced oxidation process. The advanced oxidation process including causing ozone to be mixed with the solution, maintaining the mixture of solution and ozone at a pressure above atmospheric for a time of at least two seconds. In a preferred embodiment of the process, the process includes continuously recirculating the fluid to be treated, through a recirculation conduit, the recirculation conduit including an ozone injector and the ozone injector is adapted to inject ozone into the aqueous solution as the aqueous solution circulates through an ozone injector. Influent to be treated may be selected from the group including sewage, septage, leachate, ballast or other aqueous solutions where it is desirable to treat the fluid prior to disposal, further treatment, or reuse. The process is carried out to improve a level of disinfection and/or denutrification of the effluent.

The invention discloses a wastewater treatment process adopting a porous filler to fix dominant bacteria. The wastewater treatment process comprises the following steps: (1) performing slag separation, sand setting and oil removal on wastewater; (2) adjusting the pH value of wastewater; (3) enabling wastewater of which the pH is adjusted to enter a tertiary facultative tank to be subjected to tertiary treatment; (4) enabling water getting out of the facultative tank to enter a pre-aeration tank; (5) enabling water getting out of the pre-aeration tank to enter a first-section aerobic tank; (6) enabling water getting out of the first-section aerobic tank to enter an intermediate sedimentation tank; (7) enabling water getting out of the intermediate sedimentation tank to enter a second-section/third-section aerobic tank; (8) enabling water getting out of the second-section/third-section aerobic tank to sequentially enter a coagulating sedimentation reaction tank, an inclined-tube sedimentation tank and a sand filter to be treated and then discharged in a standard manner. The wastewater treatment process provided by the invention can realize continuous treatment of organic wastewater and has a good treatment effect.

The invention belongs to the technical field of sewage treatment and discloses a domestic sewage environment-friendly treatment box. The domestic sewage environment-friendly treatment box comprises asewage box, a dreg separation basket, an impurity removing box, an impurity sticking tape and an air floating generator, wherein a water inlet is formed in the left side of the top of the sewage box;the dreg separation basket is arranged at a part, located at the lower end of the water inlet, in the sewage box. According to the domestic sewage environment-friendly treatment box, the dreg separation basket is arranged and sewage can be primarily filtered; meanwhile, the dreg separation basket can be lifted out from the top of the sewage box and the dreg separation basket is convenient to topple over and wash and is more convenient to use; the air floating generator is arranged and can generate a lot of highly-dispersed tiny bubbles through air holes on an air pipe; the air bubbles are adhered to suspended particles in sewage to form floc with the apparent density smaller than the apparent density of water, and the floc floats on the water surface and is convenient to clean; the floc onthe water surface is stuck on the impurity sticking tape through the impurity sticking tape and is scraped into a collection box through a scraping plate; the floc in the collection box flows into animpurity storage box through a drainage pipe and suspended matters in the water are cleaned; the cleaned water can be utilized again.

The invention provides a slag separation and beneficiation device, and belongs to the technical field of mine equipment. The slag separation and beneficiation device comprises a groove body, a rollerand a main shaft; the roller comprises a spiral frame and a screen; the spiral frame is connected with the main shaft through a connecting piece; the screen wraps the spiral frame; the groove body isa hollow shell with an opened upper end; two ends of the main shaft are arranged on the side walls of the groove body; a separation plate is arranged in the groove body for dividing the groove body into a first discharge hopper and a second discharge hopper; a first discharge port is formed in the lower part of the first discharge hopper; a second discharge port is formed in the lower part of thesecond discharge hopper; a feed port is formed in the upper part of a feeding end of the first discharge hopper; and a gap is formed between the end, relative to the feed port, of the spiral frame andthe inner wall of the groove body. The slag separation and beneficiation device is smooth in slag removal, prolongs the service life of the main shaft and the screen, saves the cost, and improves theworking efficiency.

An embodiment of the invention discloses an oil-water separator for catering. The oil-water separator comprises a separator box body, wherein a dreg separation chamber is fixedly installed in the separator box body; a servo motor is fixedly installed at the top of the dreg separation chamber; the output end of the servo motor extends into the dreg separation chamber and is fixedly connected with aspiral blade; the top of the dreg separation chamber fixedly communicates with a water inlet; and the top of the water inlet fixedly communicates with a liquid induction communicating vessel. According to the oil-water separator for catering, the dreg separation chamber, the spiral blade and a dreg outlet are cooperated with each other, so dreg in catering wastewater entering from the water inletis lifted and discharged, a filter residue basket can be prevented from being blocked when the filter residue basket is adopted; meanwhile, emulsified oil in water can react with small holes in the dreg separation chamber, and then demulsification operation is conducted, so the emulsified oil attached to dreg is subjected to demulsification and then separated from the dreg, and oil removal treatment does not need to be conducted on the dreg in a later period.

The invention discloses zero-power-consumption horizontal cylinder type residue isolating equipment. The equipment comprises a screen drum device, a feeding device for supplying high-flow-speed ore pulp, a residue discharge tank for receiving slag of a particle size larger than the diameter of screen apertures, an ore receiving tank for receiving materials of a particle size smaller than the diameter of the screen apertures, and a supporting device. The screen drum device can rotate relative to the supporting device; the opening of the residue discharge tank communicates with a discharge opening of the screen drum device; a plurality of the screen apertures are formed in the side of the screen drum device; specially shaped bumper plates are arranged in the inner circumferential wall of theside of the screen drum device in a corresponding mode; a radial structure can be formed between two adjacent specially shaped bumper plates, so the slag falls when the screen drum rotates to a highposition; and the feeding device is provided with a sprayer for spraying the ore pulp and the spraying direction of the sprayer is targeted towards the specially shaped bumper plates, so kinetic energy of the high-speed ore pulp is converted to rotating kinetic energy of the screen drum device. The device can separate slap and materials without extra addition of driving force and manual cleaning is not required; and the device is simple in structure and convenient to use and can be popularized.

The invention relates to the technical field of wastewater treatment, in particular to a kitchen waste wastewater treatment process and the process comprises the following steps: oil and slag separation: separating waste oil and waste slag in a separation tank under the action of centrifugation or gravity to obtain wastewater; pretreatment: allowing the wastewater to flowinto a pretreatment pool to be subjected to coagulation, flocculation and neutralization treatment in sequence; precipitation: enabling the wastewater to flow into a sedimentation tank for precipitation treatment; hydrolytic acidification treatment: enabling the wastewater to flow into a hydrolytic acidification tank for treatment; anaerobic treatment: enabling the wastewater to flow into an anaerobic tank for treatment; aerobic treatment: enabling the wastewater to flow into an aerobic tank for treatment; precipitation: enabling the wastewater to flow into the sedimentation tank for precipitation treatment; MBRfilm treatment: treating the wastewater by utilizing an MBR film; NR film treatment: treating the wastewater by using an NR film; and emission. The process has the advantage of environmental protection.

The invention relates to a scraper-adjustable sewage treatment air floatation unit. The air floatation unit comprises a tank body, the left side of the tank body is a fast-slow mixing tank, and a contact chamber and a separation chamber are arranged in the middle of the tank body. The fast-slow mixing tank is communicated with the two sides of the contact chamber through sewage pipelines. A releaser is arranged in the contact chamber, the releaser is connected with a gas dissolving system, and one side of the contact chamber is communicated with the separation chamber. The bottom of the separation chamber is communicated with a clear water tank through a clear water collecting system. A scum tank is arranged on one side of the separation chamber, and a scum separating plate is arranged between the separation chamber and the scum tank. A scum scraping mechanism is arranged above the scum separating plate and comprises a driving shaft which is rotationally mounted on the tank body through a bearing. The air floatation unit is simple in structure, the separation length is greatly reduced, sufficient dissolved air water exists at the rear end of the separation area, and the effluent quality is improved; the amount of water treated by a single air floatation unit is multiplied; the scum scraping mechanism is arranged on a single side of the separation chamber, scum is gradually taken away, and the separation chamber is prevented from being disturbed.

The invention discloses a residue separation oil remover which comprises a box body and an oil collecting box. A water inlet and a water outlet are formed in the box body; the oil collecting box is arranged in the box body, the top of the oil collecting box is provided with an oil inlet for grease to flow in, the oil collecting box is provided with an oil outlet, and the water inlet flow of the water inlet is larger than the water outlet flow of the water outlet, so that the liquid level in the box body rises, and grease on the upper layer of the liquid level flows into the oil collecting box. According to the residue separation oil remover, the separation degree of grease and water can be improved, the separated water layer automatically flows out through the water outlet, and the separated grease layer is discharged through the oil drain valve by the cleaner so that the working time of the cleaner in the oil discharge process can be saved, and the working efficiency of the cleaner is improved.

The invention discloses a domestic sewage treatment system and method. The domestic sewage treatment system comprises a sump, a facultative treatment device, a biochemical reactor and a sludge drying tank, the sump is used for storing domestic sewage; the facultative treatment device is connected with the water collecting pit through a pipeline, the facultative treatment device comprises three layers of water treatment structures, the upper layer is a residue and oil separation layer and is used for removing oil residues and oil stains in domestic sewage, and the middle layer is an aerobic biological filler layer and is used for carrying out aerobic biological treatment; the lower layer is an anaerobic biological filler layer for anaerobic biological treatment; the biochemical reactor is used for intercepting particulate matters and carrying out an aerobic biochemical reaction; and the sludge drying tank is used for collecting sludge in the facultative treatment device. The domestic sewage treatment effect and quality are improved, and the cost is saved.