78results about How to "Less amount of residual sludge" patented technology

The invention discloses a low-energy-consumption low-carbon-emission economical energy-saving urban sewage treatment method. The method comprises the steps that: 1, the to-be-treated wastewater is collected by a sewage pipe network and then is filtered by lattices, and is lifted by a pump to enter a pulse water distribution pot of a novel efficient turn-back anaerobic biochemical pool (ABR); 2, the swage subjected to the treatment in step 1 flows into a circulation-flow biological oxidization pool; 3 the effluent water from the step 2 flows into an artificial reinforced biological contact oxidization pool reconstructed by a water body from natural tunnels and reservoirs; and 4, the effluent water from the step 2 or the step 3 flows into constructed wetlands. After the sewage is treated by the above steps, the most pollutants in the water are effectively removed and the treated effluent water reaches the standard first-grade A in GB 18918-2002 ''Discharge standard of pollutants for municipal sewage treatment plant''. The energy-saving sewage treatment purification process with low cost, low energy consumption, low carbon emission and low operating cost is particularly suitable for the sewage treatment in small towns or rural areas.

The invention provides a wastewater treatment process of anaerobic ammonia oxidation and sulfur-based autotrophic denitrification coupled denitrification and desulphuration. The process is characterized in that a mixed culture of anaerobic ammonium oxidation bacteria and thiobacillus denitrificans is taken as a main part; in the same reactor, the temperature is controlled between 25-35 DEG C, the pH value of wastewater is adjusted to 7.5-8.0, and the hydraulic retention time is 2.5-10 hours; the concentration of ammonia in the wastewater calculated according to the element N is 40-300mg/L<-1>, the concentration of nitrite in the wastewater calculated according to the element N is 50-390mg/L<-1> and the concentration of sulfide in the wastewater calculated according to the element S is 30-170mg/L<-1>; the concentration ratio of the ammonia to the nitrite calculated according to the element N is 1:1-1.32, and the concentration ratio of the nitrite calculated according to the element S to the ammonia calculated according to the element N is 1:1.54-1.74. The process is a novel wastewater treatment technology for synchronically performing denitrification and desulphuration economically efficiently by using treatment of wastes with processes of wastes against one another.

A classifying collecting and treating method for organic refuse and excrement includes: 1) sucking the refuse and excrement into vacuum tubing net; 2) mixing them by vacuum pot and discharging into solid-liquid separated pool, and discharging the solid into anaerobic digesting reactor; 3) concentrating and dewatering the marsh slag discharged, adding deodorized bacterial strain, piling up and deodorizing; 4) adding digesting mud into bacterial strain cultured, culturing, drying and obtaining organic composite bacterial manure; 5) discharging the clear liquid and sewage into anaerobic and oxygen sewage treating unit, and the outlet water discharging into sewage tubing net or water body. Its advantages include lower mud output rate and mud account, and higher mud age.

The invention relates to a biochemical treatment method for improving polymer-containing sewage matrix of the oil field. Polymer-containing sewage is firstly added with a demulsifier and enters a demulsification buffer tank for demulsification, after a pH regulator is added to effluent of the demulsification buffer tank, the effluent enters a pH regulating tank and enters a floatation tank for floatation after pH is regulated, and a flocculant adding point is arranged at an inlet of the floatation tank; effluent of the floatation tank enters a filter, is filtered and then enters a water buffer tank, a compound biological nutritional agent is added, effluent of the water buffer tank sequentially enters an anaerobic tank and an aerobic tank for treatment and performs mud-water separation through a settling pond, a liquid supernatant of the settling pond is discharged after meeting the standard, a part of sludge at the bottom of the settling pond flows back to the front end of anaerobic tank, the remaining sludge and dross produced during floatation enter a sludge concentration tank and are concentrated and dewatered by a dewatering device. The treatment efficiency is high, the load impact resistance ability is high, the operation is stable and standard discharge after treatment of the polymer-containing sewage of the oil field is realized.

In aerobic condition, soluble organic substance in water can be absorbed by microbe in short time, the organic substance is in microbe cells mainly in way of intracellular polymer and used as anti-nitrocarbon source in anti-nitrify tank. The processing steps are: mixing reaction, solid-liquid separating, nitrify and anti-nitrifying.

The invention belongs to the field of sewage biological treatment, and particularly relates to equipment of denitrifying phosphorus removal coupled vibration anoxic MBR. The equipment comprises a water inlet tank, an anaerobic tank, a middle settling tank, an aerobic tank and an anoxic tank which communicate in sequence; a stirring device is arranged in the anaerobic tank; a bottom outlet of the middle settling tank is connected with a bottom inlet of the anoxic tank through a sludge transcending pipeline; a filler and an aeration device are arranged in the aerobic tank; an MBR membrane moduleis arranged in the anoxic tank, a bottom outlet of the anoxic tank is connected with a sludge treatment pipeline, and an outlet of the sludge treatment pipeline is divided into two branch pipelines,wherein one branch pipeline is connected with the bottom of the anaerobic tank through a sludge return pipeline, and the other branch pipeline is connected with a remaining sludge pipeline; and the water discharge end of the membrane module is connected with a water discharge pipeline. The technical solution provided by the invention solves the problems of a poor solid-liquid separation effect, alarge number of structures, a long process flow, low reaction efficiency, complicated system control, discontinuous water discharge, high operation energy consumption, and difficulty in controlling ofmembrane fouling.

The invention relates to an internal recycle sequencing batch type biomembrane wastewater treatment device. The device comprises a water box connected with a reactor by a pipe through a water pump and a water distribution head; the the reactor is internally provided with a filler bed for fixing fibrous fillers, a water distribution head connected with the water pump and an aeration head connected with an aerator; the water pump, the aerator, a valve and an internal recycle pump are connected with a time controller; the device is characterized in that the reactor internally comprises the internal recycle pump, the internal recycle pump is connected with an internal recycle pipe, and the water outlet of the internal recycle pipe is positioned at the upper end of the reactor; and the water distribution head is also connected with the valve to realize water drainage function. Therefore, the invention aims at the defect that a spiral agitator cannot be installed on the fiber filler bed inside the reactor, and the internal recycle pump is installed inside the reactor of the fiber filler bed so as to guarantee upper filler layer to obtain sufficient nutrients, thereby improving the fixation amounts of nitrifying bacteria and denitrifying bacteria, guaranteeing short hydraulic retention time, precipitating out the water with better quality, and having low maintenance cost.

The invention discloses a sewage treatment process for recovering N-methyl pyrrolidone. The sewage treatment process comprises the following steps: pretreating high-concentration wastewater, wherein the pretreating sequentially comprises catalytic cracking, high-voltage pulse electrolysis and coagulating sedimentation; obtaining pretreated wastewater; carrying out biochemical treatment; sequentially carrying out mixing homogenization, anaerobic reaction, hydrolytic acidification and contact oxidation on the pretreated wastewater in the step (1); obtaining biochemical treatment water; ensuringtreatment; and sequentially carrying out precipitation reaction, multi-medium filtration and active carbon filtration on the biochemical treatment water in the step (2) to finish recovery. The methodhas the advantages of low process cost, high efficiency, good recovery effect and good wastewater treatment effect, and can be widely popularized and used.

The invention relates to a treatment system and a treatment method of oil refinery alkaline residue wastewater. The treatment system comprises a waste alkali storage tank, a denitrification unit, a primary biochemical unit, a secondary biochemical unit, an ozone catalytic oxidation unit and a nitration unit. The treatment system and the treatment method have the advantages of effective and stable removal of most CODs from the alkaline residue wastewater, mitigation of the treatment load of a subsequent common biochemical treatment technology, improvement of the impact resistance of a whole sewage treatment plant, stable quality of outlet water, simplicity in operation, and low engineering cost and running cost, and can be widely applied to the field of high-concentration alkaline residue wastewater treatment of the oil refining petrochemical industry.

The invention relates to an optimized CAST domestic sewage sludge reduction control system and a working method. Through arrangement of a main control computer and a control device, high automation of the CAST system is realized, and the purpose of sludge reduction in the domestic sewage processing process can be realized through adjusting technological parameters. The control system of the invention can not only handle parameter arrangement when the sludge concentration rises but also handle parameter arrangement when sludge in a reaction pool is reduced, and the sludge amount and the sludge concentration in the reaction pool can be in a balanced and stable level.

The invention belongs to sewage treatment device, in particular to waste water anaerobe treatment device with principal character of sectional water inlet operation. An anaerobic reaction chamber surrounds the main part of a reactor, the middle of the main part of the reactor is provided with a denitrification dephosphorization zone, the bottom is provided with a sludge settling zone which is externally connected with a sludge outlet pipe; the top is provided with an overflow groove which is externally connected with a water outlet pipe; the anaerobic reaction chamber is divided into a plurality of anaerobic reaction chambers by baffles, baffle plate positioned between two adjacent baffles divide each chamber into a lower water district and an upper water district, the top of the lower water district is provided with a water inlet pipe, the bottom of the upper water district is thrown in granular anaerobic sludge, the top is provided with a sewage sample port; a row of water discharging ports are arranged between the bottom of the anaerobic reaction chamber with the lowest height of the baffle and the sludge settling zone. The invention has the characteristics of very low energy consumption, high load resistance, small amount of excess sludge, good water conservancy mixing condition, easy devices, small floor area, low running cost and the like.

The invention relates to a multi-physical field enhanced oxidative decomposition water purification device and a pollution control method thereof. The device provided by the invention consists of a shell, an outer photocatalyst, an inner photocatalyst, a light source upper support, a light source lower support, a light source, an electromagnetic spiral coil, an aeration head and an aeration head air inlet. The pollution control method comprises the following steps: introducing air or oxygen, and mixing the air or oxygen with sewage through the aeration head to form an aeration-like water flow which enters the outer photocatalyst of the device provided by the invention in a circulating manner to be subjected to direct or indirect electrochemical reaction with light, electricity, magnetism and nano-catalytic materials to remove pollutants in sewage. The multi-physical field enhanced oxidative decomposition water purification device provided by the invention integrates the photocatalysts, electrolytic ionization, magnetic driving and aeration oxidation technologies for sewage purification, has the advantages of simple structure, convenience in operation, low energy consumption, high efficiency and less excess sludge amount, can remove inorganic substances such as nitrogen and phosphorus, and achieves recovery and treatment of phosphorus and inorganic matter and recycling of water.

The invention provides a landfill leachate treatment device. The device is formed by four treatment units such as a microbial electrolysis cell reactor, an anoxic denitrification reactor, a partial nitrification reactor and an anaerobic ammonia oxidation reactor which are sequentially in serial connection, wherein the microbial electrolysis cell reactor is provided with a water inlet end and a water outlet end for landfill leachate, the water outlet end of the microbial electrolysis cell reactor is connected with a water inlet end of the anoxic denitrification reactor, a water outlet end of the anoxic denitrification reactor is connected with a water inlet end of the partial nitrification reactor, a water outlet of the partial nitrification reactor is connected with a water inlet end of the anaerobic ammonia oxidation reactor, and a water outlet end of the anaerobic ammonia oxidation reactor is connected with a draining opening or a lower-level treatment unit. The treatment device canremove organic pollutions of the landfill leachate in high efficiency and denitrify in high efficiency, so that the treated landfill leachate can stably reach the standard. In addition, when the device disclosed by the invention is utilized to treat the landfill leachate, operation energy consumption and later sludge treatment cost are further saved.

The invention discloses a sewage treatment process and a sewage treatment system thereof. The sewage treatment system comprises a primary sedimentation/adjustment tank, an up-flow type filter, a preaeration tank, an IFAS-MOX reactor, a secondary sedimentation tank and a clean water basin, wherein a sewage inlet trough is arranged on one side of the primary sedimentation/adjustment tank; a thick-thin grid is arranged in the sewage inlet trough; a micropore aerator pipe is arranged in the preaeration tank; and one end of the micropore aerator pipe communicates with a fan located on the outer side of the preaeration tank. According to the sewage treatment process and the sewage treatment system thereof provided by the invention, by utilizing the advantages of difficulty in blocking, fast filter speed and easiness in cleaning of the up-flow type filter, sewage is pretreated; by utilizing the advantages of a biofilm technology and an activated sludge technology in the IFAS-MOX reactor, without increasing the sludge concentration, the microbial population density is improved, and the sludge sedimentation performance is improved; through the dissolved oxygen gradient change, the commensalism of nitrosobacteria and anaerobic ammonium oxidation bacteria is realized, and a sewage nitrogen and phosphorus removal effect is improved. A carbon source in sewage is effectively utilized, the oxygen utilization ratio is high, the energy consumption is low, and a nitrogen and phosphorus removal effect is good.

The invention relates to the technical field of sewage treatment, particularly to a shipborne domestic sewage treatment system, which comprises a sewage treatment module, a manure sludge treatment module and a thermoelectric control module, wherein the sewage treatment module comprises a solid-liquid separator, an oil-water separator, a sewage adjustment box, a MBR biofilm reactor and a clear water collection box, and the thermoelectric control module comprises a methanol water storage tank, a methanol water-to-hydrogen reformer, a heat exchanger, a fuel cell, an air residual gas mixer and a control device. Compared with the shipborne domestic sewage treatment system in the prior art, the shipborne domestic sewage treatment system of the present invention has the following characteristicsthat the sewage and the manure on the ship are separated so as to improve the sewage treatment efficiency and integrate the power supply, the heat supply and the manure sewage treatment, and the system has advantages of small occupation area, energy saving and environmental protection.