114 results about "Blackwater" patented technology

The invention relates to a coal gasification black water and grey water treatment system with high heat recovery efficiency. The treatment system is characterized in that grey / black water from a gasification segment is subjected to three-stage flash evaporation treatment, namely, high-pressure flash evaporation, low-pressure flash evaporation and vacuum flash evaporation, and direct heat exchange is performed through a hot water tower. In the coal gasification black water and grey water treatment system disclosed by the invention, direct heat exchange equipment is provided, so that indirect heat exchange equipment is omitted, the heat recovery efficiency is increased, and the energy utilization rate is increased; meanwhile, the equipment quantity and work flow are simplified on the whole, so that the equipment blocking risk is lowered, and the equipment overhauling workload is greatly lowered. The invention further provides a coal gasification black water and grey water treatment method with high heat recovery efficiency.

The invention discloses a process and system for treating gasified grey water. According to the process, a power quantity exchange process is provided so as to recover pressure energies contained in high-temperature high-pressure gasified black water, and the pressure energies are converted into mechanical energies so as to carry out external action; after treated grey water is subjected to the combined pressurization of a power quantity exchanger and a centrifugal pump driven by a motor, the grey water is heated by high-pressure flash steam, and then, is conveyed to a gasification section for use; the pressure of the gasified high-pressure black water is reduced to 1.0 MPa after the gasified high-pressure black water passes through the power quantity exchanger, the gasified high-pressure black water is conveyed to be subjected to high-pressure flash treatment, and then, the flash process is not changed; and in order to facilitate the pressure regulation of a high-pressure flash tank and avoid overpressure, a regulation valve is arranged in front of a control valve which leads a high-flash separator to a conversion section, and the high-flash separator is led to a total torch, and the occurrence of environmental incidents, such as torch extinguishment or direct emission and the like, is avoided. According to the process and system for treating the gasified grey water, the process is combined with the system, and the problems of energy source waste, environment pollution, cumbersomeness in operation, and the like, in the prior art can be effectively solved through the improvement on the prior art and the scientific and rational energy utilization.

The invention relates to a source separation treatment system and a source separation treatment method of organic wastes, in particular to an environment-friendly treatment technology capable of saving water resources, reducing the quantity of the organic waste and changing the organic wastes into resources. A source separation treatment system consists of an organic waste source separation system, a conveying system, an automatic bagging system and a treatment system. A convenient food waste garbage conveying pipe is provided for residents in a kitchen, so food waste garbage can be conveyed and outwards transported without leaving the kitchen, meanwhile, the mutual mixed pollution of the food waste garbage and other domestic garbage is avoided, and other recyclable substances can be recovered and utilized to the maximum degree. Health facilities such as water-saving closestools are arranged in a toilet, water and energy are saved, meanwhile, the feces and urine are conveyed and discharged through being separated from the other washing water, washing water (grey water) and black water (feces and urine) are separated and respectively conveyed, the grey water can become reclaimed water through simple treatment for realizing the selling, and the black water and solid organic wastes are utilized into resources after being treated by the organic waste treatment system.

A marine waste water dump control system for noncommercial nonmetallic or fiberglass boats that provides a system and process for automatically monitoring the time, exact location, and quantity of blackwater, greywater or bilgewater (marine water waste) is dumped from such a water vessel and for requesting and receiving approval or disapproval for dumping marine water waste into restricted or unrestricted waters, including oil water and the like. The instant invention has an MS (Automatic Information System) or comparable communication system that operates at approximately 160 MHz for determining the exact distance from shore and communicating with marine authorities, such as the Coast Guard, before activating the dump control system and communication. The dump control system of the instant invention automatically stores all dumping related information in memory for access by authorities at any time in the event a vessel does not include an AIS or a working AIS. The instant invention also determines from existing shoreline beacons and a triangulation method the exact distance a water vessel is from the shore. The system may be applied to any and all holding tanks on a marine vessel containing pollutants such as black water, gray water, bilge water, oil water and the like.

The invention discloses an adjusting device for treating domestic sewage. According to the adjusting device, sewage collecting pipelines for collecting grey water and black water are connected to the adjusting device and the adjusting device is connected to an electrolysis device by a pipeline; the adjusting device comprises an adjusting pool with an Inverted-right-angled-trapezoid-shaped structure, wherein the adjusting pool is divided by a vertical plate into a chamber I and a chamber II of which the bottoms are connected; one side of the upper part of the chamber I is connected with the sewage collecting pipelines; an inclined board is arranged in the chamber II, wherein gaps are left between the inclined board and both the upper and lower inner walls of the chamber two; a crushing pump is connected to the bottom of the adjusting pool and the chamber II by pipelines; a water collecting head with filter holes is arranged at one side of the chamber two and is connected to a water connector which is located outside the adjusting pool; and filtered sewage is provided to the electrolysis device by the water collector via a pipeline and a delivery pump. The adjusting device for treating domestic sewage is simple in structure, capable of fining the particles in the domestic sewage only by physical and mechanical effects and capable of relatively stabilizing the indexes such as the pH and the salt content. According to the adjusting device for treating domestic sewage, no large-granule solid waste in the sewage for electrolysis treatment is ensured, so that impact to the electrolysis device is avoided.

The invention belongs to the field of village and town sewage treatment and recycling, and relates to a distributed domestic sewage source separation, collection and treatment system capable of locally recycling resources and reducing the pollution load and design method thereof, which includes a quality-divided collection system and a treatment system; The quality-divided collection system comprises a black water intercepting overflow well, a grey water collection and collection well and a sewage collection pipe network; the treatment system comprises more than one set of distributed black water digestion and recycling system and more than one set of miscellaneous water treatment system, and the black water digestion and recycling system comprises an anaerobic digestion tank and a recycling tank. The miscellaneous water treatment system comprises an adjusting tank, an aerobic tank, a sedimentation tank and a subsurface wetland. Domestic sewage is divided into black water and grey water to be collected respectively, cyclic utilization of nitrogen, phosphorus and potassium resources of rural domestic sewage is preferentially achieved on site, the sewage amount and the pollutant concentration in the sewage are reduced, an existing conventional sewage treatment mode of nitrogen and phosphorus removal is thoroughly changed, cyclic utilization of the resources can be truly achieved,and the sewage treatment cost is greatly reduced.

The invention relates to a CO2 treatment gasification gray water recycling device and method. According to the device, system gasification black water is introduced through a pipeline to be naturally precipitated in a buffer tank, a gasification black water supernatant in the buffer tank is fed into a gas dissolving reactor through a lifting pump to be effectively and fully mixed with CO2 introduced into an air temperature gasifier from a CO2 storage tank; the gasification black water supernatant and CO2 are effectively and fully mixed and then flow into a calcium removal reaction tank, the CO2 reacts with the Ca<2+> in the wastewater to generate calcium carbonate precipitates, so that the Ca<2+> ions in the supernatant are removed; and the reacted liquid is fed into an automatic backwashing surface filter through a pipeline of an anti-interference water processor by a liquid inlet pump to be subjected to solid-liquid filtration so as to remove the precipitates in the gray water, the supernate after filtration returns to a production system, and the filter residues are discharged into a geosyncline. According to the invention, more than 90% of total hardness content in the gasified grey water can be removed, pure light calcium carbonate can be recovered, scaling of grey water system equipment and pipelines can be effectively slowed down, and stable operation of the grey water system can be ensured.

The invention relates to a rural domestic sewage classification treatment system, and belongs to the technical field of sewage treatment. The system comprises a three-stage septic tank system, a filtration and regulation system, an immersed bio-filter and a subsurface flow constructed wetland system, the three-stage septic tank system is connected with a toilet to introduce black water, the blackwater is subjected to anaerobic fermentation in the three-stage septic tank system, is transferred through a manure passing pipe, and flows into a sewage pipe through a connecting pipe after being converged with grey water in kitchens, the mixed sewage is conveyed through the sewage pipe, goes through a grating well and flow into a regulating tank, the mixed sewage in the regulating tank is pumpedinto the immersed bio-filter through a submersible sewage pump and is treated by activated sludge, the treated water flows into the constructed wetland system, and the water in the constructed wetland flows into a water collecting channel from an adjustable water outlet. The rural domestic sewage can be treated in a classified mode, the black water can be treated to fertilize lands, and the greywater can be directly discharged or recycled after being purified; and the rural domestic sewage classification treatment system has the advantages of simple structure, and convenience in maintenance.

The invention discloses a rural black and grey water collection, treatment and resource utilization system. The system comprises a household miscellaneous drainage collecting pipe, a household toiletflushing water collecting pipe and a breeding excrement water collecting pipe, and is characterized in that the miscellaneous drainage collecting pipe is connected with the upper part of an oil-separating deslagging well, the bottom of the oil-separating deslagging well is connected with a grey water treater through a grey water main pipe, and reclaimed water is recycled after water in the grey water treater is treated, the household toilet flushing water collecting pipe is connected with a black water treater through a black water main pipe, the black water treater is connected with a black water advanced treatment device through a pipeline, the breeding excrement water collecting pipe is directly connected with the black water advanced treatment device, and liquid treated by the black water advanced treatment device is output through a submersible pump to be used as fertilizer. The construction period is short, and civil engineering investment is saved by adopting the carbon steel anti-corrosion square tank body or the glass fiber reinforced plastic tank body.

The invention provides a gasification black water treatment process which comprises the following steps: (1) introducing gasification black water into an electromagnetic reaction tank which is made ofa metal material or alloy; mounting permanent magnets above and below the reaction tank, and forming a magnetic field perpendicular to the water flow direction in the reaction tank; (2) enabling thegasification black water to enter a coagulation tank and a flocculation tank from the electromagnetic reaction tank, adding a silicon removing agent and a coagulant into the coagulation tank, and adding a flocculating agent into the flocculation tank; precipitating through an inclined plate precipitation tank; and (3) filtering by a filter to remove residual suspended solids. After the gasification black water is treated by the process disclosed by the invention, the hardness is less than 20mg / L, the soluble silicon is less than 20mg / L, the suspended solid content is less than 3mg / L, and the chloride ions are less than 20mg / L, so that the gasification black water can be completely recycled in a gasification system, the scaling rate of the gasification system is reduced by 90%, and the amount of discharged wastewater is reduced by 80%.

The invention discloses a source separation toilet for treating excreta on site by hermetia illucens, and relates to the technical field of environmental protection. The toilet comprises a toilet bodyprovided with a floor, the toilet body is divided into a toilet chamber and a degradation chamber by the floor internally provided with an integrated controller, and a closestool, an induction lamp,a hand washing sink and a spraying and ventilating all-in-one machine are arranged in the toilet chamber; the degradation chamber is provided with a plurality of environment monitoring elements and aurine collection box; a degradation bin capable of being integrally pulled out is arranged in the degradation chamber, and an inclined plate is arranged on the side away from a hermetia illucens degradation bin pull-out opening; the degradation bin is divided into a hermetia illucens degradation bin and a microbial degradation bin by a filter plate, a spreading and turning mechanism, auxiliary materials and hermetia illucens larvae are arranged in the hermetia illucens degradation bin, and a microbial suspension is arranged in the microbial degradation bin; according to the method, hermetia illucens and microorganisms are used for synergistically decomposing excreta on site, so that manual labor is saved, the environment is protected, and the degradation efficiency can be improved.

The invention relates to a rural domestic sewage resource classification efficient treatment system, and belongs to the technical field of sewage treatment. The system comprises a black water treatment tank, a domestic sewage first-stage treatment tank, a domestic sewage second-stage treatment tank and a domestic sewage third-stage treatment tank, wherein the black water treatment tank comprises ablack water deodorization tank, an anaerobic treatment tank, a composting tank, a liquid fertilizer tank and a urine tank. According to the system, domestic black water is intensively collected intothe black water deodorization tank through a black water collection pipeline; after being deodorized in the black water deodorization tank, the black water flows into the anaerobic treatment tank, andis subjected to a reaction to generate methane and black water, the methane is collected and utilized by a methane power generation device, and the black water enters the composting tank or the liquid fertilizer tank; and the black water in the urine tank and grey water are mixed and pass through the domestic sewage first-stage treatment tank, the domestic sewage second-stage treatment tank and the domestic sewage third-stage treatment tank so as to be purified. According to the invention, the method mainly solves the problem that rural domestic sewage is randomly discharged to pollute the environment, and has important effects in the improvement of rural ecological environments, the improvement of living quality of farmers, the increasing of resource utilization rate of domestic sewage,and the like.

The invention belongs to the technical field of entrained-flow coal gasification, and provides an entrained-flow coal gasification black ash water settling and dispersing system and a black ash watersettling method thereof in order to improve the settling efficiency of entrained-flow coal gasification black water. A primary flocculant adding device is that a flocculation tank I is connected witha mixer I through a flocculation pump I; a secondary flocculant adding device is that a flocculation tank II is connected with a mixer II through a flocculation pump II; the mixer I and the mixer II are connected with a black water pipeline of a settling tank, the bottom of the settling tank is connected with a drainage pump, and the top of the settling tank is connected with the water inlet of abaffling clarifier through an overflow weir; the bottom of the baffle clarifier is provided with a drain outlet, the top is provided with a drain pipe, and the end of the drain pipe is connected withan ash water tank; the baffle clarifier and the ash water tank are connected with a dispersant tank through a dispersant pump. By adding different kinds of flocculants in the two-stage device, the purpose of reducing the total dosage of chemicals on the one hand and better settling treatment effect on the black water on the other hand can be achieved.

The invention discloses an automatic continuous dosing system for treating coal gasification black water. The system comprises a settling tank, a grey water tank and a dissolving tank, the settling tank is connected with a black water pipe, a flocculating agent dosing branch pipe is arranged on the black water pipe, the flocculating agent dosing branch pipe is connected with the dissolving tank, aconnecting pipe is arranged between the settling tank and the grey water tank, the grey water tank is connected with a dispersing agent dosing pipe, the bottom of the grey water tank is provided witha purified water pipe, and the purified water pipe is provided with two branches, namely an outer water drainage pipe and a recycled water pipe. In actual use, flow monitoring and online data signalanalysis are added to the whole dosing system, and detection signals are transmitted to a central control room, so that flow regulation and continuous and automatic dosing of a medicament can be ensured, and the treated water quality is ensured to meet the requirements of discharge and gasification cyclic utilization.

The invention discloses a system for conducting kitchen waste resourceful treatment through black soldier flies. The system comprises a sorting machine, a magnetic separator, a crushing machine, a hydrocyclone, a presser and a fermentation machine. The sorting machine is used for conducting preliminary crushing on kitchen waste and screening out large-sized metal and plastic products in the kitchen waste, and a first material is obtained; the magnetic separator is used for removing the rest of metal in the first material, and a second material is obtained; the crushing machine is used for crushing the second material; the hydrocyclone is used for separating thick liquid mixed by the crushed second material and water into a third material and ceramic and glass fragments large in specific gravity; the presser is used for pressing the third material, and the third material is separated into a fourth material and an oil-water mixture; and the fermentation machine is used for fermenting thefourth material into fodder of the black solder flies. By means of the system, the kitchen waste is subjected to impurity removing, crushing and dehydration and fermentation treatment, the fodder used for feeding the black solder flies is made, and resourceful treatment of the kitchen waste is achieved.

The invention provides a rural household toilet black water in-situ recycling device and method. The rural household toilet black water in-situ recycling device is composed of a pretreatment adjusting area, a microbial electrolysis strengthening treatment area and a clarification area. Black water generated by flushing a toilet with water in each household firstly enters a pretreatment pool, and macromolecular organic matters are converted into micromolecular organic matters through a hydrolytic acidification effect. Then, the black water enters a microbial electrolysis system provided with conductive plastic particles and a carbon fiber electrode, a weak voltage is applied to stimulate the effect of microorganisms, pollutants and pathogenic microorganisms in the black water are intensively treated, and the sewage finally flows into the clarification area, is baffled by a baffle and then is discharged. The clarification area serves as a discharged water storage pool. The treated effluent can be used as a liquid fertilizer for farmlands. The device and the method have the advantages of being simple and convenient to operate, efficient, low in consumption, stable in system operation, capable of recycling and harmlessly treating the black water and the like, and suitable for treating small-volume toilet black water.

The invention belongs to the field of sewage treatment, and relates to a recycling and standard-reaching treatment method for rural domestic sewage, which is carried out in a sewage treatment system comprising an anaerobic digestion tank, a reuse tank, a grid sedimentation tank, an adjusting tank, a variable process biochemical tank, a sedimentation tank and a variable process ecological filter bed. The method comprises the following steps: S1, when the liquid level of black water in the anaerobic digestion tank is lower than an overflow limit liquid level, operating in a quality-divided treatment mode, recycling the black water as an efficient liquid fertilizer after anaerobic digestion, and discharging grey water after reaching the standard after treatment; and S2, when the resource reuse demand of the black water is reduced, continuously raising the liquid level of the black water in the anaerobic digestion tank to the limit liquid level of overflow, merging the black water into a grey water treatment system, and switching to a merging treatment mode. According to the invention, cyclic utilization of nitrogen, phosphorus and potassium resources of rural domestic sewage is preferentially realized on site, the conventional sewage treatment mode of nitrogen and phosphorus removal is thoroughly changed, cyclic utilization of resources can be truly realized, and the sewage treatment cost is greatly reduced.

The invention provides a flash evaporation stripping cooling tower. The flash evaporation stripping cooling tower is sequentially provided with a flash evaporation chamber, a liquid phase staying chamber, a stripping chamber, a heat exchange chamber and a separation chamber from bottom to top, wherein the stripping chamber is sequentially provided with a tray section, a liquid phase distributor and a gas phase distributor in the steam flowing direction, a plurality of trays are arranged in the tray section, a heat exchanger section is arranged in the heat exchange chamber, and a plurality of heat exchangers are arranged in the heat exchanger section. The invention further provides a flash evaporation stripping cooling system. The invention also provides a black water treatment process. According to the flash evaporation stripping cooling system and the black water treatment process thereof, equipment integration is achieved, the process is simplified, energy consumption is reduced, theheat transfer effect is improved, low-temperature grey water is used for cooling, graded utilization of the low-temperature grey water is achieved, a large amount of circulating water is saved, and complete recycling of slag water is achieved.

The invention discloses a marine platform domestic wastewater grading treatment method for grading treatment of black water and ash water generated from a marine platform, wherein the black water is sent to a black water collection tank in which a filter screen is mounted, so that suspending substances are blocked thereby, and filtered water self-flows into a three-dimensional electrocatalytic reactor for degrading organic substances, qualified water being discharged after reaching standard; sludge generated from the black water is dehydrated, and the dry sludge is transported to land for treatment at fixed period, and a filtrate is fed back to the black water collection tank; the kitchen ash water is skimmed to remove oil dirt by a skimmer and is fed to an ash water collection tank, bathash water is treated through a hair filter and is fed to the ash water collection tank, wherein the two ash water flows are homogenized and mixed in the ash water collection tank and is treated by anelectrolytic reactor to remove organic substances and to be disinfected; the output water is treated through a superfiltering device to remove the harmful substances until recycling standard is reached. Through the grading treatment, reliability of qualified emission of the wastewater is improved, and reasonable utilization of water source is achieved.

The invention relates to a cleaning device, in particular to a recreational vehicle (RV) withdrawable black water tank cleaning table and a cleaning method. The recreational vehicle withdrawable blackwater tank cleaning table comprises a cleaning and supplying pile used for sewage discharge, cleaning, and water and electric energy supplying, a sewage suction device used for crushing and collecting sewage in a black water tank, a cleaning gun used for cleaning the inner wall of the black water tank, and a vibrating platform; and the cleaning and supplying pile is provided with a faucet, a charging port, a water filling port, a sewage outlet, a self-priming sewage pump and a charging device. The recreational vehicle withdrawable black water tank cleaning table can not only provide water andelectricity supplies for an RV, but also mechanically clean the sewage in the black water tank, and discharges the sewage into a sewer connected under the cleaning and supplying pile on the spot, thereby avoiding environmental pollution caused by the use of chemical degradation agents.

The invention relates to the technical field of sewage treatment, in particular to a black water degradation agent which is prepared by mixing an oxidizing agent, sodium citrate, sodium chloride, sodium pyrophosphate and an aromatic. A preparation method of the black water degradation agent comprises the following steps of: uniformly stirring the oxidizing agent, the sodium citrate, the sodium chloride, the sodium pyrophosphate and the aromatic at normal temperature, and performing extrusion forming by using a tablet press to obtain the black water degradation agent. Compared with the prior art, the degradation agent has the following beneficial effects that firstly, peculiar smell is eliminated, the effect of the degradation agent is improved, and the service life of the degradation agentis prolonged; and secondly, the smoothness of the wall of the closestool is improved, excrement is prevented from being hung on the wall, the color of black water is changed, and the visual impact ofhuman excrement on people is reduced.

The invention discloses an integrated AAO (anaerobic-anoxic-oxic) treatment black water reusing method. A sewage treatment device is arranged, and the sewage treatment device comprises a treatment system and a reusing system, wherein the treatment system comprises two parts, namely a well body and a precipitation tank, the well body comprises a shaft, a downward aeration head and a propeller stirrer, the interior of the shaft is divided into two parts by a partition plate, an anaerobic area is arranged on one side, and a water inlet pipe is arranged at the top of the anaerobic area; an oxic area is arranged at the upper part on the other side, an anoxic area is arranged at the lower part on the other side, and the downward aeration head and the propeller stirrer are arranged in the oxic area and the anoxic area; the precipitation tank, a sludge return hole and a water outlet hole are arranged on the periphery of the upper part of the shaft, and a sludge discharge pipe is arranged at the bottom of the precipitation tank; and sewage after treatment flows into a water collection tank through a lifting pump, and water in the water collection tank can complete rinsing of a toilet under the action of gravity flow, flows through a septic tank, overflows through a grille, enters a regulating tank for pretreatment and then re-enters the treatment system, and the treatment and the reusing of black water are finally realized. The method disclosed by the invention has the advantages of high efficiency, environment-friendly property, energy conservation and low cost.

The invention relates to the field of coal chemical industry, and discloses a coal gasification system and gasification black water treatment equipment and method. The gasification black water treatment equipment comprises a separation tank, a settling tank and a buffer tank. The separation tank comprises a separation chamber, a stirring piece arranged in the separation chamber, and a black waterinlet, a dilution water inlet and a black water outlet which are communicated with the separation chamber, and the stirring piece is arranged to stir black water entering the separation chamber so asto separate floating beads attached to fine slag in the black water and wrapped in the fine slag from the fine slag. The settling tank comprises a settling chamber as well as a black water inlet, a clear liquid outlet and a fine slag discharge port which are communicated with the settling chamber, the black water inlet of the settling tank is communicated with the black water outlet of the separation tank, and the settling tank is used for settling fine slag in black water. The buffer tank comprises a buffer chamber and a clear liquid inlet communicated with the buffer chamber, and the clear liquid inlet of the buffer tank is communicated with the clear liquid outlet of the settling tank so as to collect supernatant containing floating beads in the settling tank. The gasification black water treatment equipment can effectively separate floating beads in black water.

The invention provides black water treatment equipment. The black water treatment equipment comprises a lower flash evaporation section (1), a middle dust removal section (2) and an upper heat exchange section (3), wherein the lower flash evaporation section (1) is used for carrying out flash evaporation on black water; the middle dust removal section (2) is connected to the top of the lower flashevaporation section (1) and used for achieving gas-solid-liquid separation; the upper heat exchange section (3) is connected to the top of the middle dust removal section (2) and used for achieving heat recovery; and the lower flash evaporation section (1), the middle dust removal section (2) and the upper heat exchange section (3) are sequentially communicated in the direction from bottom to top. According to the black water treatment equipment disclosed by the invention, flash evaporation, dust removal and heat exchange can be realized in the same equipment, connecting pipelines and valvesare saved, and equipment and pipeline investment is effectively saved.

The invention provides a gasification furnace lock hopper slag flushing water recycling system. The system comprises a gasification furnace, and the gasification furnace is connected with a lock hopper through a pipeline. The lock hopper is connected with a submerged chain conveyor through a pipeline. The submerged chain conveyor is connected with an inlet of a slag pool pump through a pipeline, and an outlet of the slag pool pump is connected with a first flow regulating valve and a second flow regulating valve through pipelines respectively. The first flow regulating valve is connected witha lock hopper flushing water tank through a pipeline, and the lock hopper flushing water tank is connected with the lock hopper through a pipeline. The second flow regulating valve is connected with avacuum flash tank through a pipeline, the vacuum flash tank is connected with a clarification tank through a pipeline, and the clarification tank is connected with a grey water tank through a pipeline. Through graded utilization of water of different qualities, the black water circulation amount of the system is reduced, the operation costs of chemicals and circulating water and the electric charge are reduced, and the problem that a valve is difficult to open and close due to scaling of a slag flushing pipeline of the lock hopper and the problem that timing deslagging of the lock hopper is affected due to insufficient water supplementation are solved.

A Recreational Vehicle tank flush system is provided in which the existing vent pipe to the blackwater tank is modified by attaching an introduction tee which provides a hookup to a source of flushing water and to a hose and sprayer which may be hung just inside the top of the tank.

The invention relates to the technical field of black ash sewage treatment, discloses a rural black ash sewage treatment system and a technological process, and solves the problems that most distributed small-scale sewage treatment processes are not mature enough, desilting cleaning is inconvenient, the working efficiency is low, and actual use is inconvenient. The system comprises a three-grid septic tank, a grid sedimentation tank and desilting equipment, the desilting equipment comprises a desilting box, a partition plate is arranged in the desilting box, a grey water tank and a black water tank are arranged on the two sides of the partition plate respectively, a two-way lead screw is arranged in the desilting box, a control cavity is formed in the partition plate, and the two ends of the two-way lead screw are connected with the inner wall of the desilting box through first bearings; first movable plates are arranged in the grey water tank and the black water tank; and according to the amount of grey water, the position of the oil separation plate can be adjusted, two flexible scraping plates scrape settled sand in the grey water tank and the black water tank to the two sides respectively, the inside of the grey water tank and the inside of the black water tank can be cleaned conveniently, and the motor can be maintained and overhauled conveniently.

The invention discloses a coal water slurry gasification system. The coal water slurry gasification system comprises a gasification furnace, a washing tower, an ash water tank, a sedimentation tank, afirst coal water slurry / black water heat exchanger and a second coal water slurry / black water heat exchanger; the gasification furnace, the washing tower, the ash water tank and the sedimentation tank are sequentially arranged and connected through pipelines; the black water input end of the first coal water slurry / black water heat exchanger is connected with the black water output ends of the gasification furnace and the washing tower; the black water input end of the second coal water slurry / black water heat exchanger is connected with the black water output end of the first coal water slurry / black water heat exchanger; the black water output end of the second coal water slurry / black water heat exchanger is connected with the black water input end of the sedimentation tank. The coal water slurry gasification system has the advantages that high-temperature black water from the gasification furnace and the washing tower preheats and heats coal water slurry through the second coal water slurry / black water heat exchanger and the first coal water slurry / black water heat exchanger for two-time heat exchange, no phase change exists, low-grade heat energy can be recovered, and the energy recovery efficiency is greatly improved; complex flashing systems are omitted, and the equipment investment cost is reduced.

The invention belongs to a multi-stage energy recovery device and process for coal water slurry gasified black water. The device comprises a gasification furnace with a black water discharge port andan evaporation hot water tower, a multi-stage energy recovery unit is arranged between the black water discharge port of the gasification furnace and the evaporation hot water tower, and the multi-stage energy recovery unit comprises at least two turbine units used for recovering black water potential energy and heat recovery units arranged between the adjacent turbine units and used for recovering black water heat energy. The device has the characteristics that the structure is simple, the design is reasonable, the problems of serious erosion corrosion, black water energy waste and the like of the black water pressure reducing valve can be effectively solved, recycled pressure potential energy can be used for a production system, recycled heat energy is used for power generation, and coalchemical industry waste energy is effectively utilized.