101results about How to "Biochemical improvement" patented technology

The invention discloses a pretreatment process of organic silicon wastewater, comprising the steps of homogeneous treatment, slag removal, oil removal, iron-carbon micro-electrolysis process, Fenton process, neutralization deposition and overflow and discharge of supernate. Aiming at the strong acid characteristic of the organic silicon wastewater, the iron-carbon micro-electrolysis can be directly carried out after the homogeneous impurity removal; partial COD (Chemical Oxygen Demand) can be degraded while the biochemical quality of the wastewater is improved and the pH value is improved; then hydrogen peroxide is directly added to form a Fenton system; a strong oxidant is formed to damage the structure of organic matters and chromophonic groups in the wastewater and effectively oxidize so as to remove the organic matters which are difficult to degrade and cannot be removed by the traditional wastewater treatment technology, and thereby the aims of further reducing the COD and improving the biodegradability of the wastewater can be improved. The organic silicon wastewater can reach the national third-grade discharge standard after being subjected to neutralization and the precipitation and reach the national first-grade discharge standard after being subjected to biochemical treatment. The pretreatment process has the advantages of low cost and stable treatment effect and is simple for operation.

The invention discloses a low-consumption nitrification and denitrification coal chemical wastewater advanced treatment device, comprising a catalytic oxidation pond, an oxidation stabilization pond and a rear biochemical BAF pond, wherein the catalytic oxidation pond is filled with ozone-catalytic particles in a static bed form, and a comprehensive dilution tank is provided with a charging hole and a stirrer; the ozone-catalytic particles are prepared from 88.7-91.3 parts of activated aluminium oxide particles, 1.2-1.5 parts of copper oxide, 4-7 parts of polyethylene glycol, 1.5-2 parts of polyvinyl alcohol, 0.8-1 part of titanium dioxide, 0.3-0.5 part of hydroxyl propyl cellulose and 0.2-0.4 part of manganese dioxide; the lower part and the upper part of an aerobic tank in the rear biochemical BAF pond are respectively provided with a lower sieve plate and an upper sieve plate, the lower sieve plate, the upper sieve plate and the side wall of the aerobic tank form an aerobic cavity, and a plurality of aerobic activated sludge particles and a plurality of second masson pines as a filler are arranged in the aerobic cavity. The low-consumption nitrification and denitrification coal chemical wastewater advanced treatment device oxidizes a macromolecular organic matter hard to degrade into a micromolecular organic matter easy to biochemically treat, and the biochemical property of effluent is further improved.

The present invention relates to a double-component platinum catalyst curing agent. It includes agent A and agent B which can be uniformly mixed when they are used, in which the agent A is mixture of vinyl raw rubber, gas phase white carbon black and platinum complex, and the agent B is mixture of vinyl raw rubber, gas phase white carbon black, silicon oil whose end contains hydrogen and inhibitor. When the agent A and agent B are mixed, their mass ratio is agent A: agent B = (0.8-1.0)(1.0-1.5). Said invention also provides the preparation method of said double-component platinum catalyst curing agent.

The invention relates to an in-situ water repair method for clean aquaculture. Polluted aquaculture water is pushed by liquid level difference, and organic pollutants are removed by ecological infiltration in forms of interception, absorption and degradation which are in coordination. When water discharged from the pool-bottom water collecting tank enters a solidified bioreactor, solidified microaerobic microorganism in a carrier is activated to provide a rich microaerobic microbial community source for the ecological infiltration system. The water containing the microbial community is pumped back to the water system of the aquaculture pool, the microorganism reproduces massively under the action of a shallow aerating system, the microorganism uses the pollutants of the required nutrients, and accordingly aquaculture water can be purified effectively, and clean aquaculture is achieved. The ecological infiltration pool-bottom system is built by directly using the bottom space of the aquaculture pool, the processing system does not occupy floor space, sludge is not generated, cost is saved, the solidified microorganism carrier in long in service life, in-situ aquaculture water purification and up-to-standard pollutant discharge are achieved, and evident comprehensive benefits are achieved.

The invention relates to a method for treating xanthate wastewater through combination of film biodegradation and hydrogen peroxide oxidation, which belongs to the technical field of sewage treatment. The method comprises two sections of treatment processes, namely the film biodegradation and the hydrogen peroxide oxidation. The method comprises the following steps: controlling the volume loading of a film bioreactor to between 3.0 and 5.0 kgCOD/(m.d), controlling the hydraulic power residence time in the reactor to between 18 and 36 hours and the sludge residence time to between 75 and 150 days, controlling the dissolved oxygen concentration to between 2.5 and 4.0 milligrams per liter, controlling the temperature in the reactor to between 20 and 35 DEG C and the active sludge concentration to between 10,000 and 15,000 milligrams per liter, and controlling the sludge loading to between 0.11 and 0.17 kgCOD/(kgMLSS.d); and adjusting the pH value of the sewage in a reaction tank to between 3 and 5, adding 5 to 10 mg/L H2O2 to perform oxidation treatment for 30 to 60 minutes, and after the oxidation treatment, discharging the purified water. Through the treatment by the method, the removal rate of the COD and the xanthate reaches more than 90 percent and more than 99 percent respectively.

The invention discloses a comprehensive wastewater reuse treatment method for a waste incineration power plant. The method comprises the steps of production sewage pre-treatment, flue gas wastewater pre-treatment, domestic sewage pre-treatment, landfill leachate pre-treatment, reverse osmosis deep treatment and dehydration treatment. According to the method, landfill leachate and domestic sewage are mixed and subjected to facultative and aerobic treatment, so that COD and NH3-N in the landfill leachate can be effectively reduced, the proportion of pollutants in sewage can be balanced, the mixed liquid has good biodegradability, and the effluent quality is good; the pretreated production wastewater, the biodegraded landfill leachate and domestic sewage are subjected to combined deep treatment, and only one set of treatment device is needed, so that the investment cost is reduced; and sewage combined treatment is adopted, so that the content of COD and heavy metal ions in the sewage which enters a reverse osmosis system can be effectively reduced, the problem of reverse osmosis membrane blockage can be effectively relieved, the frequency of chemical cleaning can be reduced, and the service life of the reverse osmosis membrane can be prolonged.

The invention discloses a method and a continuous system for treating wet organic waste, and belongs to the field of environmental protection/sewage treatment/sludge treatment. The method includes steps of conveying and preheating raw materials; carrying out hydrothermal oxidation reaction; removing oxygen from oxidation reaction products; recycling reaction heat; carrying out flash dehydration; carrying out mechanical dehydration; treating filter liquid; treating tail gas. The continuous system comprises a wet organic waste raw material pump, a sleeve heater, a hydrothermal oxidation reactor, an oxygen remover, waste heat recycling heat exchangers, a byproduct steam plant, a flash plant, a dehydration plant and a tail gas treatment plant. The method and the continuous system have the advantages that the continuous system is simple, the wet organic waste can be directly treated without being dried, the reaction is easy to maintain under self-heating conditions without external heat, a large quantity of heat of the high-temperature materials can be recycled, the method and the continuous system are high in energy utilization rate, and a large quantity of economic byproducts (steam) can be generated; problems that existing raw material preheating heat exchangers are vulnerable to blocking and existing waste heat recycling heat exchangers are vulnerable to corrosion can be solved by the aid of the method and the continuous system.

The invention belongs to the technical field of water treatment, and specifically relates to a carbon source supplement used by a sewage plant at a low temperature. The carbon source supplement is prepared from the following components in percentage by weight: (1) 10 to 30 percent of sodium acetate, (2) 1 to 5 percent of molasses, (3) 5 to 15 percent of methanol, (4) 1 to 5 percent of glycerol, (5) 1 to 10 percent of acetic acid, (6) 1 to 10 percent of sodium carbonate, (7) 1 to 15 percent of glucose, (8) 1 to 5 percent of starch and (9) the balance of water. The carbon source supplement disclosed by the invention can be widely applicable to the sewage plant to supplement a carbon source, and a remarkable biochemical effect can also be obtained even under the situation that the water temperature in winter is lower.

The invention discloses a sludge hydrothermal oxidization reaction system and method with a function of product reflux pretreatment, and belongs to the field of municipal sludge treatment. A gaseous product generated through hydrothermal oxidation is led out from the top of a reactor, residual oxygen and produced carbon dioxide after the reaction are removed, and then the gaseous product is introduced into a sludge pretreatment tank and directly contacted with sludge for preheating the sludge; a divided flow part of a liquid product flows back to the sludge pretreatment tank; steam and hot water preheat sludge under the stirring action, and the problem that heat recovered by the system is not enough to preheat the sludge to reach the feeding temperature is solved; the residual liquid product is treated with a vacuum flashing method, flash steam is recovered and sent to a pretreatment sludge feeding pipe for tracing heat, and meanwhile, a liquid phase after flash deoxidization enters a downstream heat-exchange device for waste heat recovery. With the adoption of measures, high-temperature material heat of the system can be recovered to preheat sludge, corrosion of dissolved oxygen to a heat exchanger can be relieved, system investment is reduced, and energy utilization rate and economic efficiency of the system are increased.

The invention discloses an absorbent for removing VOC waste gas and a preparation method thereof. The absorbent is prepared from, by mass, span 80 1.8%, Tween 80 7.2%, n-butyl alcohol 3%, glycerol 1%, biodiesel 20%, water 60.6%, hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine 1.4%, 1% mass concentration of sophorolipid 1% and 3.9% mass concentration of rhamnolipid 4%. A preparation method comprises the steps that the span 80 and the Tween 80 are mixed and stirred evenly, the n-butyl alcohol, the glycerol, the biodiesel, the water, the rhamnolipid, the sophorolipid and the hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine are sequentially added during stirring, and even stirring is performed to complete the preparation of the absorbent. The absorbent uses an organic solvent as a raw material, the rhamnolipid and the sophorolipid having stronger benzene series adsorption capacity are added, the absorption effect is enhanced, the biochemical properties of discharged waste gas absorption liquid are good, the absorbent can be directly used in an existing sewage treatment system for treatment, and a good treatment effect is obtained.

The invention discloses a water treatment method of a microbial fuel cell. After waste water difficult to degrade is catalyzed by TiO2 with visible-light activity under visible light or sunlight, the waste water difficult to degrade and waste water easy for biochemistry are mixed to together serve as a carbon source of a microbial fuel cell, so that the degradation rate of the waste water difficult to degrade is enhanced; meanwhile, the invention provides a method for enhancing the bioavailability and the efficiency of the microbial fuel cell by combining a mixed fuel technology of photocatalytic treatment; the power density and the water treatment efficiency of the microbial fuel cell can be enhanced; and moreover, the utilization range of organic waste water can be widened.

The invention belongs to the technical field of fertilizers and discloses a liquid fertilizer special for Dahlia pinnata, made from, by weight, 15-50 parts of monopotassium phosphate, 10-30 parts of potassium sulfate, 5-30 parts of calcium nitrate, 1-10 parts of citric acid, 5-45 parts of Maifan stone extract, 3-10 parts of a growth regulator, 3-10 parts of plant extract, 10-24 parts of a wetting agent, and 1000-3500 parts of water. The invention also discloses a manufacture method of the liquid fertilizer special for Dahlia pinnata, comprising the sequential steps of mixing well raw materials, and adding citric acid to adjust pH of the solution to 5.5-7. The liquid fertilizer according to the invention is prepared specially in accordance with the growth features of Dahlia pinnata, the liquid fertilizer has complete nutrition, the fertilizer utilization rate of Dahlia pinnata is increased effectively, and absorption by Dahlia pinnata, promotion of adult-plant blossoming, sterilization and disinfecting, lodging resistance and healthy growth are facilitated.

The invention discloses an advanced treatment method and device of coking wastewater and relates to the technical field of coking wastewater treatment. The advanced treatment method of coking wastewater comprises steps as follows: (1) treating the coking wastewater with a biochemical method; (2) adding a gangue-based inorganic polymer coagulant and performing efficient coagulation and filtration;(3) performing adsorption with reproducible filler, and enabling a desorption solution to flow back to a biochemical device for biochemical treatment after microelectrolysis and Fenton treatment; (4)sequentially performing ultrafiltration, nanofiltration and reverse osmosis treatment and treating reverse-osmosis high-concentration brine water through membrane distillation and crystalizing coupling. A series of environmental protection problems caused by drainage of the coking wastewater are solved, and the method and the device have very remarkable social and environmental benefits, also haveprofound significance in survival and sustainable development of the coking industry, improvement of the ecological environment and water resource saving and are suitable for large-scale popularization in the coking industry.

The invention discloses a treatment method of acrylic acid wastewater, and belongs to the field of wastewater treatment method, according to the method, the acrylic acid wastewater is introduced to acoagulation reaction tank, so that most of the suspended impurities in the wastewater can be removed, and the sludge and water in the effluent after the coagulation reaction are separated by flowing through a sedimentation tank. The supernatant is introduced into a biochemical system, and the organic pollutants are degraded through one-stage continuous aerobic/ABR anaerobic/two-stage continuous aerobic/BAF aerobic, and the whole organic nitrogen of the wastewater is subjected to ammoniated, nitrated and denitrified reactions. The sediment sludge is subjected to external transportation treatment, the supernatant is discharged after reaching the standard. The biochemical combination process simultaneously ammoniates, nitrates and denitrifies the whole organic nitrogen of the wastewater, andtreats ammonia and nitrogen and whole nitrogen as important pollution indexes for treatment, and the operation cost is low. After the effluent is treated through biochemical treatment, the COD, ammonia nitrogen and whoel nitrogen are completely discharged according to the standard. Good environmental effect is provided.

A water saving and energy saving process the continuous production of whole grain flour and whole gluten-free flour is provided. The process includes preconditioning whole-grain or seed with water and uses an energy efficient blanching treatment with saturated steam. The process also provides flour having a bimodal size mixture of material having improved viscosity. The whole grain and whole gluten-free flour can be used to prepare grain products and baked foods.

A water saving and energy saving process the continuous production of whole grain flour and whole gluten-free flour is provided. The process includes preconditioning whole-grain or seed with water and uses an energy efficient blanching treatment with saturated steam. The process also provides flour having a bimodal size mixture of material having improved viscosity. The whole grain and whole gluten-free flour can be used to prepare grain products and baked foods.

The present invention provides an aeration lateral system designed to be site specific for new septic disposal areas or retro fitting to existing septic disposal areas to break up the biological clogging sludge mat at the interface of the wastewater and imported sand or native soil fill under or adjacent to disposal areas of a typical septic system. The lateral system provides uniform or other site specific distribution of fluids about the bio-mat of a wastewater disposal area, with lateral spacing and hole spacing varying based on the type of disposal area being utilized. The lateral system can also be utilized to provide continuous low volume air supply system to a wastewater disposal area or peat filter module. The air lateral installation includes methods to minimize airflow disturbance of the soil and methods to prevent air leakage.

The invention discloses a comprehensive treatment method for sewage of a cigarette factory. According to the comprehensive treatment method, sewage is introduced into a grating channel through an open channel to be filtered, then the filtered sewage is introduced into a water collection well; sewage in the water collection well is pumped into an adjustment tank; the sewage in the adjustment tank is pumped into an efficient air floatation tank to be subjected to solid-liquid separation, and water subjected to solid-liquid separation enters an effluent stabilizing region; after being subjected to air floatation, the effluent flows into a hydrolysis acidification tank and enters an MBR tank; after reacting in the MBR tank, liquid is subjected to mud-water separation by virtue of an MBR membrane assembly, isolated activated sludge flows back to the MBR tank, and filtered liquid enters a second clean water tank; disinfected liquid is pumped into an RO system, effluent of the RO system enters a product water tank and is supplemented to a circular cooling water system through a third frequency-variable water supply pump; and sludge discharged from the efficient air floatation tank, the hydrolysis acidification tank and the MBR tank enters the same sludge concentration tank and is dehydrated through an overlapped screw type dehydration machine. The comprehensive treatment method has a good biochemical effect, the effluent can be directly reused, reclaimed water treatment processes can be selected according to water seasons and time frames, and the operation is positive and stable.

The invention provides a method for treating sewage generated in the ammonia synthesis process using coal as a raw material. The method comprises the following steps of: settling sewage sediments, introducing the sediments into a first-stage anaerobic tank, a first-stage oxic tank, a second anaerobic tank and a second-stage oxic tank sequentially, and performing two-stage anaerobic/oxic (A/O) biochemical treatment to reduce ammonia nitrogen content and chemical oxygen demand in the sewage, wherein the sewage is subjected to denitrification in the first-stage anaerobic tank and the second-stage anaerobic tank, and is subjected to nitrosation in the first-stage oxic tank and the second-stage oxic tank. The method is characterized by comprising the following step of: putting glucose and sodium acetate in the weight ratio of 1:(3-15) into the second-stage anaerobic tank, wherein 0.4 to 0.5 kilogram of glucose and sodium acetate are put into each ton of sewage according to the total addition amount. The glucose and the sodium acetate are mixed and matched according to a proportion, so that the method has a good treatment effect on the sewage and is lower in cost. Simultaneously, after the glucose and the sodium acetate are added according to the proportion, compared with a method in which white sugar and the glucose are purely added, the method has the advantages that: the total addition amount of a carbon source can be reduced.

The invention discloses a cascade treatment and purification system and method for a black and odorous river. The cascade treatment and purification system comprises a subsurface flow wetland purification river reach, a surface flow wetland purification river reach, a near-natural beach land purification river reach and a near-natural pollution reduction river reach which are sequentially arranged on a main river channel from a sewage estuary to a downstream river, an in-situ purification island and a subsurface wetland are arranged on the subsurface flow wetland purification river reach, and an internal electrolysis matrix is arranged in the in-situ purification island; a side groove connected with the main river channel is formed in the surface flow wetland purification river reach, and a surface flow constructed wetland is arranged in the side groove; a side seepage ditch with the head end and the tail end connected with the main river channel is arranged on the near-natural beach land purification river reach, and side seepage walls are arranged on the two sides of the side seepage ditch respectively; and a river center island is arranged on the near-natural pollution reduction river reach, and indigenous stain-resistant plants are planted on the river center island and the main river channel. The system and method are suitable for treatment and purification of heavy-pollution black and odorous rivers lack of natural runoff, and main incoming water of the heavy-pollution black and odorous rivers is treated town sewage and industrial wastewater.

The invention discloses a method for preparing a methylamine wastewater pretreatment catalyst. The method comprises the following steps: roasting crushed magnetite with the specific surface area of 200-300 m<2>/g for 3-5 hours under 600-800 DEG C, cooling to 20-28 DEG C, then adding the magnetite in a 30-40wt% nanometer TiO2 impregnating solution and standing for 12-24 hours, subsequently drying under 105-120 DEG C until the mass ratio of the magnetite to nanometer TiO2 is (3-4) to 1, and finally roasting for 6-8 hours under 1000-1200 DEG C to obtain the methylamine wastewater pretreatment catalyst. The catalyst prepared according to the method has the relatively high catalytic activity and stability, and can effectively catalyze and decompose hydrogen peroxide to produce hydroxyl radicals, and thus organic pollutants in waste water can be degraded, the structure of organic pollutants in methylamine wastewater can be changed, and the biochemical ability of the catalyst can be effectively improved; meanwhile, the catalyst produced according to the method has the magnetism, is easily recovered, repeatedly utilized and environmentally-friendly, and can be produced and applied in large scale.