10 results about "Municipal sewage" patented technology

The invention discloses a partial-vacuum closed drainage system and a control method the drainage system. The drainage system comprises sanitary ware, a closed sewage collection box and a sewage draining machine unit, wherein the sanitary ware is mounted in a toilet; the closed sewage collection box and the sewage draining machine unit are mounted in an equipment room; the sanitary ware is connected with an inlet of the closed sewage collection box by a sewage draining pipeline I; an outlet of the closed sewage collection box is connected with the sewage draining machine unit by a sewage draining pipe II; the closed sewage collection box is provided with a vent pipeline III communicated with the outside; and the sewage draining machine unit is provided with an electric control unit. According to the drainage system and the control method, gas in the toilet is discharged to a municipal sewage draining pipe network through the closed sewage collection box and the sewage draining machine unit by controlling an electric valve and opening and closing of the electric valve, and utilizing the self-absorption function of a rotary cam pump; and the air quality of the toilet can be improved greatly in case that that underground ventilation is not smooth.

The invention relates to a rubbish treatment system and method in order to solve the problem that low-cost rubbish treatment cannot be effectively conducted easily in the prior art. When the rubbish treatment method is used for treating rubbish, the rubbish manufactured by citizens is directly discharged into a municipal sewage pipe network after being smashed and is further scoured continuously by an intermittent siphon scouring and silting device, and accordingly pipeline silting can be prevented. The smashed rubbish is mixed into original municipal sewage and then is conveyed to a service reservoir through the municipal sewage pipe network, the rubbish is matched with farmer market rubbish collected to be made into sewage with the COD content and power of hydrogen being suitable for meeting the growing requirements of methane bacteria, part of organic matter in the sewage can be decomposed into biogas quickly after the sewage passes through a fast biogas digester, and biogas slurry which is not decomposed in the fast biogas digester is then conveyed into a low-speed biogas digester to be fully decomposed to produce a large amount of biogas in the low-speed biogas digester together with collected food waste. By means of the rubbish treatment system and method, the municipal rubbish and sewage can be recovered and treated to the greatest degree, and meanwhile the blocking problem of city sewer lines can be solved.

The invention belongs to the technical field of sewage treatment, and in particular to a method for improving the removal effect of nitrogen pollutants in sewage. Efficient nitrogen degrading bacteria are prepared by performing enlarged cultivation on thauera sp. FDN-01. When the nitrogen-containing pollutants in the sewage are degraded, the efficient degrading bacteria are added into an anoxic unit, and aerobic activated sludge which is domesticated successfully is added into an aerobic unit. According to the method provided by the invention, under the condition of simulating coexistence of high-concentration nitrate nitrogen, nitrite nitrogen and ammonia nitrogen, the quality of effluent is far higher than first-level A effluent standard of 'Discharge standard of pollutants for municipal sewage treatment plant' (GB18918-2002) (the total nitrogen is less than or equal to 15 mg/L, and ammonia nitrogen is less than or equal to 5 mg/L), and the removal rate of the total nitrogen in the sewage is high. By the method, secondary pollution to the environment is avoided and the treatment cost is low.

The invention discloses a two-stage short-cut nitrification and anaerobic ammonia oxidation coupled endogenous denitrification deep denitrification device and a method thereof. The device comprises araw water tank, a PN reactor, an intermediate water tank and an SAED reactor, urban sewage raw water is stored in the raw water tank, the PN reactor is connected with the raw water tank through a PN water inlet pump, the PN reactor is connected with the middle water tank through a PN water outlet valve; the municipal sewage raw water in the raw water tank is further connected to the SAED reactor through a SAED water inlet pump, the SAED reactor is connected with the middle water tank through the short-cut nitrification liquid inlet pump, and the municipal sewage raw water and short-cut nitrification liquid in the SAED reactor are subjected to deep denitrification and then discharged through a water outlet valve of the SAED reactor. The anaerobic ammonia oxidation coupling endogenous denitrification is taken as a main denitrification way, and the method has the advantages of no need of adding an external carbon source, economy, high efficiency, stable operation and the like, and is suitable for the technical fields of construction of small and medium-sized urban sewage treatment plants, upgrading and reconstruction of constructed projects and the like.

The invention discloses a sewage purification treatment device for a municipal sewage pipe network. The sewage purification treatment device comprises a collection chamber and a filter chamber formedin one side; the collection chamber and the filter chamber are communicated with each other through a communication pipe, one end of the communication pipe is arranged at the lower half part of one side of the collection chamber, and the other end of the communication pipe is arranged at the upper half part of the filter chamber; a rectangular groove is dug in the top of the filter chamber, the upper portion of the filter chamber is provided with a horizontal support frame, a convex block matched with the rectangular groove is fixedly welded to the bottom of the horizontal support frame, a filter net is also hung at the bottom of the horizontal support frame, a liquid inlet pipe is installed at the side, away from the filter chamber, of the collection chamber, the top of the liquid inlet pipe is communicated with a water storage barrel, the lower half part of the collection chamber is arranged to be in a funnel shape, and the bottom of the collection chamber is communicated with a mudoutlet pipe. According to the sewage purification treatment device for the municipal sewage pipe network, multi-stage filtering can be achieved, and the filter net can also be treated and prevented from being clogged.

The invention relates to rotary type industrial wastewater treatment equipment and a using method thereof and belongs to the technical field of wastewater treatment equipment. The rotary type industrial wastewater treatment equipment comprises a shell, wherein an outrigger is installed on the lower end of the shell, a water inlet tube is arranged on one side of the shell, a water outlet tube is arranged at bottom part of the shell, a reducer is installed on the upper part of the shell, and the rotary body is driven to rotate by the reducer through a rotary shaft; a baffle is arranged on the rotary body and a scum board assembly is arranged on the lower part of the baffle. The rotary type industrial wastewater treatment equipment provided by the invention capable of effectively blocking the small solid matters in the wastewater is the solid-liquid separation equipment for continuously eliminating the impurities in the fluid, and namely is the indispensable special equipment for the production process in the industries such as urban sewage treatment, waterworks, power plant water inlets, textile, food processing, papermaking and leather, and the wastewater processing cost of the factory can be greatly reduced.

The invention discloses a high-connectivity polyvinylidene fluoride hollow fiber membrane and a preparation method thereof.The preparation method comprises the steps: making polyvinylidene fluoride and a single diluent fully heated and mixed to be uniform to obtain a membrane casting solution; extruding the membrane casting solution and the heated core solution through a spinneret plate, immersing the membrane casting solution and the heated core solution in coagulating bath water through air gaps for curing and shaping, and winding the membrane casting solution and the heated core solution on a spinning wheel to obtain a primary membrane; and extracting the primary membrane with ethanol to obtain a finished membrane. According to the invention, the mechanical property of the membrane is improved, the water flux of the membrane is improved, and the production cost is reduced; the membrane can be used in the whole industry of petroleum, chemical engineering, electric power, special wastewater and the like as well as municipal sewage treatment, drinking water treatment, membrane contactors and the like, and has a wide application prospect.

The invention discloses a sludge flattening and drying device for municipal sewage treatment, and the device comprises a drying oven; a hollow boss is arranged at the top of the drying oven, a discharging device is arranged at the top of the hollow boss, a feeding device is arranged on one side of the discharging device, a heat supply device is arranged at one end of the drying oven, and an exhaust pipe is arranged at one end, far away from the heat supply device, of the top of the drying oven; two sludge carrying drawers are vertically arranged in the drying oven in parallel, two sets of drawing assemblies are vertically arranged on the outer walls of the two ends of the drying oven in parallel, a pressing plate is arranged in the drying oven, a passing opening is formed in the center ofthe pressing plate, L-shaped clamping strips are symmetrically fixed to the tops of the two sides of the passing opening, and two shielding plates are slidably connected into the two L-shaped clampingstrips; second telescopic rods are connected to one ends of the two shielding plates, third telescopic rods are vertically fixed to the four vertex angles of the top of the drying oven one by one, and output shafts of the four third telescopic rods are connected with a pressing plate. According to the sludge drying device, the sludge drying treatment efficiency can be improved, the energy loss isreduced, the discharging mode is simplified, and the labor intensity of workers is reduced.

The invention discloses a high-concentration organic malodorous waste gas treatment machine for an urban sewage treatment plant, which structurally comprises a filter, a fan, a deodorizer and an extraction device, the fan is connected between the filter and the deodorizer through a flange, and the extraction device is arranged at the right end of the extraction device; the air inlet device can be automatically closed when the sewage level is too high, a large amount of sewage is prevented from overflowing into the air inlet device, condensed small water drops mixed in gas can be intercepted during normal work at ordinary times, and the intercepted small water drops are collected and discharged when work is stopped. According to a second air passing pipe, water doped in gas can be separated out and condensed into small water drops to be stored, liquid is discharged in a unified mode when work is stopped, and the situation that a large amount of water doped in the gas is sucked into equipment, and the equipment is damaged is avoided.