512 results about "Greywater" patented technology

Sewage waste digestive bacteria and enzymes are incorporated into a slow release material and delivered to the site of the waste to digest the solid waste. The slow release material is made heavy so the enzymes and bacteria will be delivered to the sludge in the bottom of a sewage digester chamber and made fat soluble so that the enzymes and bacteria will be delivered to the grease in the waste system to be digested. This selective delivery system prevents the enzymes and bacteria from being diluted in grey water rendering them less effective and discharged from the sewage system without digesting waste.

A method of scrubbing a gas stream with re-circulated kiln dust when the kiln dust is hydrated to form a sorbent. The sorbent is re-circulated with un-reacted flue gas stream for scrubbing.

An economically viable process and system for centrally processing multiple loads of laundry with minimum environmental impact. A system and method of laundering whereby successive loads of laundry may be washed while continuously providing effective soil removal comprising at least partially recycled wash water from at least one previous wash cycle. The system and the method of using the same comprises filtering wash water with at least one filter to form wash retentate and wash permeate. The use of wash permeate in successive washes provides for reuse of chemicals and water recovery. A similar arrangement may be used with regard to the rinse water. Advantageously, one embodiment of the invention provides for the use of rinse retentate as make up water in the wash loop which increases water recovery and chemical recovery. Ultimately, the invention can reduce the production of gray water and recover chemicals used in the laundering process.

This invention relates to a gray water recycling invention that utilizes filtered gray water for maintaining constant moisture levels in building foundations and for other irrigation uses. The invention allows for the mixture of pesticides with a gray water stream injected under a building in order to treat for insects. Additionally, pesticides, fungicides, or fertilizers can be injected into a gray water stream prior to its application in landscape irrigating. The invention has applications in both a single residence and fill development real estate setting.

Embodiments of the present invention provide a grey water flush system for use with vacuum toilets. One embodiment of the system provides a two-stage flush that uses a transient tank in between the toilet bowl and the main aircraft waste tank, which reduces the noise level associated with the flush process because a lesser vacuum is demanded for the first stage of the flush. Embodiments of the system further capture grey water from a sink basin in a reservoir and use that water in the toilet flush process. There is further provided a lavatory odor removal system option that is activated during the second stage of the flush.

The invention relates to a technology for reducing waste incineration fly ash via water logging pretreatment, and the technology is particularly suitable for the treatment of waste incineration fly ash with salt content higher than 20%. A water logging dechlorination manner is used for treating waste incineration fly ash; by prolonging the logging time, the water consumption is greatly reduced, a subsequent wastewater treatment process is simplified at the same time and a soluble salt resource is recycled; before fly ash enters into a furnace, most of heavy metals and chlorine salts are removed, a matrix of fly ash is purified, and by virtue of existing incineration equipment of waste incineration power plants, pollutants such as dioxin are thoroughly degraded, so that the overall normal running of a waste incineration line is ensured and the harmless and reduction treatment of waste incineration fly ash is realized. The technology has a characteristic of correct in-situ treatment, and is simple in process and low in investment and operation costs; by gathering most of heavy metals and salts in heavy metal plaster and gathering little of the two in secondary fly ash, the reduction of waste incineration fly ash is realized, and then a favorable foundation is laid for the subsequent further treatment or resource utilization.

Methods and systems are disclosed which provide for the purification of effluent from a septic system or natural water from rainwater or stormwater collection devices for the storage and reuse of water. The purified water may be supplied to water applications, such as a return conduit to a home for potable or graywater usage. The distillation unit may be powered by a local power independent of a municipal power grid and which may employ sustainable energy mechanisms. The distiller residue may undergo a volume reduction process, such as evaporation, coagulation, electrocoagulation or microfiltration. The purified water may be stored in a holding tank with sensors to monitor the water quality and water level within the tank. Alarms, release valves or relief valves may be activated in response to such monitoring.

The invention relates to a biological contact oxidation and artificial wetland bioecological combined treatment system for the grey water of a residential area. The system consists of a biological contact oxidation pre-treatment device and an artificial wetland post-treatment device. The system treats the grey water of the residential area and recycles the treated water as the water for landscapes of environment-friendly buildings by using biological contact oxidation and artificial wetland combined technology as the technical core; and the water quality of the outlet water reaches the restrictive control index TN of the standard for landscape recycled water. For the grey water of the residential areas of different concentrations, the system can meet the requirements of the landscape recycling standard on the outlet water by adjusting the operating mode of the combined technology: an intermittent operating mode is used for the grey water of the residential areas of high pollution concentration; a continuous aeration operating mode of low gas-water ratio is used for the grey water of the residential areas of low pollution concentration; the treated grey water can be used as the water for the landscapes of the environment-friendly buildings; and the system has a simple structure and low operating cost and is a practical and feasible technical system for the treatment of the grey water of the residential areas suitable for the conditions of China.

Water, preferably fresh potable water, is electrochemically, e.g. electrolytically, treated to achieve disinfectant properties. The electrochemically treated water is sprayed onto the toilet seat and directed into the toilet bowl for each flush cycle of an aircraft toilet system, so as to clean and disinfect the toilet seat and the toilet bowl. The electrochemically treated water has a direct germ-killing effect on the seat and bowl, and also disinfects the arising wastewater that is conveyed to and stored in a storage tank. For flushing the toilet bowl, the electrochemically treated water may further be mixed with reused graywater, which is thereby disinfected.

The invention relates to a residence community domestic sewage treating system. The system comprises a black water collection system, an anaerobic acidification reaction tank, an anaerobic gasification reaction tank and an aerobic contact oxidation tank, the black water collection system is communicated with the lower portion of the anaerobic acidification reaction tank through a black water inlet pipe, an outlet of the anaerobic acidification reaction tank is communicated with an inlet of the anaerobic gasification reaction tank, an outlet of the anaerobic gasification reaction tank is communicated with an inlet of the aerobic contact oxidation tank, a brown water collection system is communicated at a position of the inlet of the aerobic contact oxidation tank, the outlet of the aerobiccontact oxidation tank is communicated with an aerobic filter tower, a grey water collection system is arranged at a position of an inlet of the aerobic filter tower, a methane collection tank is communicated with the top of the anaerobic acidification reaction tank and the anaerobic gasification reaction tank, the methane collection tank is connected with a gas-fired boiler, the gas-fired boileris connected into the anaerobic gasification reaction tank through a pipeline, and the inlet of the anaerobic gasification reaction tank is connected with an alkaline liquor adding system through thepipeline. The residence community domestic sewage treating system and a method have the advantages that the system is simple, the sewage treatment effect is good, the construction costs are low, and the land occupation is small.

In certain embodiments, a system includes a gasification system configured to output grey water. The system also includes a grey water zero liquid discharge (ZLD) system configured to receive the grey water and to generate a first stream of distillate. The grey water ZLD system comprises an ammonia stripping system. An amount of water into and out of the grey water ZLD system is approximately equal.

An economically viable process and system for centrally processing multiple loads of laundry with minimum environmental impact. A system and method of laundering whereby successive loads of laundry may be washed while continuously providing effective soil removal comprising at least partially recycled wash water from at least one previous wash cycle. The system and the method of using the same comprises filtering wash water with at least one filter to form wash retentate and wash permeate. The use of wash permeate in successive washes provides for reuse of chemicals and water recovery. A similar arrangement may be used with regard to the rinse water. Advantageously, one embodiment of the invention provides for the use of rinse retentate as make up water in the wash loop which increases water recovery and chemical recovery. Ultimately, the invention can reduce the production of gray water and recover chemicals used in the laundering process.

The invention discloses an ash water circulation treatment system of a wet-type electric dust remover. The ash water circulation treatment system comprises an ash water tank used for collecting ash water discharged from the wet-type electric dust remover, a supplementary branch and a circulating branch, wherein the supplementary branch comprises a supplementary water tank and a flush water pump; a water inlet of the flush water pump is connected with the supplementary water tank; a water outlet of the flush water pump is connected with the spraying mechanisms of the wet-type electric dust remover through a water conveying pipe; the circulating branch comprises a circulating water tank, a circulating water pump, a solution tank filled with an alkali solution and an automatic filter; a water outlet of the ash water tank and a water outlet of the solution tank are connected with the circulating water tank respectively; a water inlet of the circulating water pump is connected with the circulating water tank; a water outlet of the circulating water pump is connected with a water inlet of the automatic filter; and a water outlet of the automatic filter is connected with the spraying mechanisms of the wet-type electric dust remover through the water conveying pipe. The ash water circulation treatment system is simple in structure and scientific and reasonable in arrangement; water can be continuously supplied for self circulation; the water consumption is greatly reduced; the water consumption cost is saved; and the ash water can be prevented from causing secondary pollution.

An integrated domestic utility system is used to recycle grey water in a domestic house as a means to divert treated potable water away from non-potable uses, and in particular, toilet flushing. The system comprises a rainwater tank for storing rainwater collected from a roof top and a grey water tank to store grey water collected from a shower or bathtub. The rainwater is used to augment the grey water supply through a self regulating valve. Domestic water can also be used to replenish the grey water tank. A demand amount of grey water is pumped from the storage tank to at least one toilet tank. The system is controlled by a controller using pressure sensors and temperature sensors. The invention may include a solar heating circuit coupled to a domestic water heater. In one example of the invention, the system stores grey water in a bathtub and supplies it to toilet tank.

A forecast-integrated automated control system for combined greywater-stormwater storage and reuse. A simple and reliable approach for managing greywater and stormwater collection at a household or community level is provided, allowing for the near-continuous monitoring and adjustment of water quantity and quality in a combined greywater-stormwater storage tank based on monitored feedback / output from individual, tank-specific sensors and / or sensors located elsewhere in the water collection system. Use of the forecast-integrated automated control system for combined greywater-stormwater storage and reuse enables optimization of the water quality and quantity collected in the storage tank, reduce the amount of stormwater discharged to municipal sewers, and assure / demonstrate regulatory compliance for control of stormwater runoff through the integration of a low impact development best management practices.

The invention discloses a method for pretreating fly ash of domestic refuse incineration through cooperative disposal of cement kilns, which belongs to the technical field of solid waste treatment and disposal. The method comprises a fly-ash washing-dechlorination stage, a washed-ash dehydration stage, a supernatant treatment stage and a kiln-entering calcination stage, wherein sulfuric acid serving as neutralizer is added to supernatant or removed filtrate in order to neutralize the supernatant or the removed filtrate and allows pH to reach a range between 6 and 9, and then dithiocarbamate-type derivatives serving as a heavy metal chelating agent and a polyacrylamide flocculating agent are added in turn to guarantee the precipitation effect of heavy metal ions. Sulfuric acid neutralization and heavy metal precipitation are performed on eluate to ensure that washing liquid can reach discharge standards. The method utilized to treat fly ash has the advantages of saving raw materials of the cement industry, effectively fixing heavy metal, thoroughly burning down dioxin, disposing of fly ash safely, economically and conveniently and achieving environmental, economic and social benefits.

The invention discloses a cooperatively preprocessing method of a solid waste incineration flying ash cement kiln of a returned effluent in the technical field of solid waste treatment and disposition. The method comprises four stages of flying ash washing and dechlorinating, washings processing, washed ash dehydrating and calcining in the kiln, wherein, at the stage of flying ash washing and dechlorinating, heavy metals washed out in the washing process are chelated, flocculated and settled, then is filtered and pressed together with the washed ash, and then is put into the kiln. Neutralization and heavy metal sedimentation are carried out on an eluate so that the washings can be discharged after reaching standards. When used for processing flying ash, the method not only can save the raw materials in the cement industry, but also can effectively fixing heavy metals, completely burn dioxin, safely, economically and fast dispose flying ash and greatly improve the environmental, economic and social benefits. With the method, occupied area, water and investment are saved, the operation is reliable, the washed ash and the washings are processed with stable effect, and no secondary pollutant is caused.

Catering in a transport vehicle like an aircraft involves collecting mixed waste including solids (e.g. left-over food portions, food wastes, napkins, disposable cutlery) and liquids (e.g. beverage rests), without separation. These wastes are disposed of into an apparatus including a receiving container with a filter and separating element at the bottom, a waste shaft leading into the container, a press arrangement with flap doors, pressure pistons which press the press arrangement and flap doors onto the waste in the container to compact the waste, and a drain and coupling system at the bottom of the container. As the waste is compacted, liquids drain down through the filter, oils and fats are removed by the separating element, and non-oily liquids are removed through the coupling system to the vacuum disposal system or the gray water drain line of the vehicle. A control unit controls the overall operation.

A personal water conservation system includes gray water discharge lines, a main sewage line, an impurity measuring unit, a buffer tank, a directional control valve, a water treatment unit, a treated water tank, an automatic shutoff valve, and at least one toilet flush tank. The buffer tank and the water treatment unit purify the gray water in two different stages. The purified gray water is then stored in the treated water tank. If the gray water can't be purified within the personal water conservation system, the impurity measuring unit and the directional control valve redirect the gray water into the main sewage line. The purified water from the treated water tank can be used with the at least one toilet flush tank in order to conserve fresh water.

A water recycling system that can be used for reclaiming and recycling water, waste water, or grey water, for providing landscape irrigation, or for recycling uses such as for sanitary facilities, as well as for pre-heating clean water to save energy. A water recycling system may include a sealable tank, an influx pipe, a self-clearing filter disposed within the tank, a pump, and an effluent pipe.

A charging conduit extends from a source of grey water to a separate inlet of two tanks arranged in parallel. A discharging conduit extends from a separate outlet of each tank to the source of grey water for recycling the grey water. Upper and lower level-detectors are provided for each tank and a flow detector monitors the flow of grey water through the discharging conduit. Valves control the flow of grey water into and out of each tank and respond to the level of grey water in the tanks monitored by the level-detectors.

The invention provides a recycling process of garbage fly ash ash-washing water, which comprises the steps of suspended substance separation, heavy metal ion removal, calcium and magnesium ion removal, filtration, mechanical compression and multi-effect evaporation. In the process, the heavy metal ions are removed in advance by adopting a method of adding sodium sulfide saline solution, depositing and filtering, and then a large amount of calcium and magnesium ion deposits obtained by subsequent depositing can be used as cement raw materials, thereby effectively improving the resource utilization ratio and reducing the comprehensive treatment cost; high-concentration saline sewage is subjected to the multi-effect evaporation to realize the recycling of water resources, and simultaneously the byproduct chloride can be used for other industrial uses; and the mechanical compression is technically combined with the multi-effect evaporation, so the energy consumption is only 1 / 4 of that of the conventional evaporation.

The invention discloses a wet-type electric dust removal system after wet desulphurization. The wet-type electric dust removal system comprises a wet-type electric dust remover and an ash water treatment circulation system, wherein a cathode system, an anode system and a plurality of spraying mechanisms are arranged in the wet-type electric dust remover; an ash water tank is arranged at the lower part of the wet-type electric dust remover; the ash water treatment circulation system comprises a supplementary water tank, a flush water pump, a circulating water tank, a circulating water pump, a solution tank filled with an alkali solution, an automatic filter and a water conveying pipeline; a water inlet of the flush water pump is connected with the supplementary water tank; a water outlet of the flush water pump is connected with the spraying mechanisms; a water outlet of the ash water tank and a water outlet of the solution tank are connected with the circulating water tank respectively; a water inlet of the circulating water pump is connected with the circulating water tank; a water outlet of the circulating water pump is connected with a water inlet of the automatic filter; and a water outlet of the automatic filter is connected with the spraying mechanisms. According to the wet-type electric dust removal system, aerosol formed by PM2.5 fine particle dust, SO3, NH3 and the like can be efficiently removed, corrosion of internal parts can be reduced, water can be supplied for self-circulation, the water consumption is greatly reduced, and the problem of secondary pollution caused by ash water is solved.

An apparatus for preventing the contamination of a fresh water source by grey water to be land applied, the apparatus comprising a source of grey water, a source of fresh water, a mixing tank having inlets for fresh and grey water as well as outlets for mixed fresh / grey water, and a safety overflow to prevent contamination of the fresh water source by grey water. There is a total disconnect between fresh water and grey water. Also provided is a means for preparing a desired mixture of fresh and grey water to be land applied, having desired characteristics of concentration of nitrogen, phosphorous, and other nutrients. A means for automatically transferring grey water from a lagoon or holding pond to an additional tank when the level of the grey water in the lagoon or holding pond exceeds a desired level is provided. Finally, the invention allows injection of additional nutrients, herbicides, pesticides and the like into the mixture to produce a desired composition for land application.