43results about How to "Reduce total phosphorus" patented technology

The invention provides a method for increasing the utilization efficiency of ozone and reducing the COD of wastewater. According to the method, a chemical agent for removing a hydroxyl radical capture agent generated in base catalysis ozone advanced oxidation is added into the wastewater so as to achieve the purposes. Calcium ions, barium ions and the like are added into a base catalysis ozone oxidation system, so that the hydroxyl radical capture agent becomes precipitate to be separated from the water and loses the capacity for capturing hydroxyl radicals, and accordingly the utilization efficiency of ozone is improved. In addition, part of organic acid generated by the calcium ions, the barium ions and the like and the ozone oxidation wastewater precipitates to be separated from the water, so that the consumption of ozone is reduced, and the utilization efficiency of the ozone treatment wastewater is indirectly improved. By means of the method, the reaction rate of ozone can be obviously increased, the utilization efficiency of ozone can be obviously improved, reaction time can be shortened, cost can be reduced, organic matter in the wastewater can be thoroughly mineralized, and the COD and the total phosphorus content of the wastewater can be significantly reduced.

The invention discloses a method for realizing ecological aquaculture method by regulating the water quality of a high-yield aquaculture pond. The method integrates micropore oxygen increasing technology, a fish and vegetable co-existing technology and a water quality regulation micro-ecological agent using technology, so that the water quality of the high-yield aquaculture pond can be improved substantially, the water transparency can be improved, total ammonia nitrogen, nitrite nitrogen, total phosphorus and total nitrogen in water can be reduced, the pH of water can be stabilized, the density of blue algae, green algae and euglena which are harmful to aquaculture can be reduced obviously, diatom, dinoflagellate and cryptomonad which can serve as bait are not influenced obviously, an experimental pond is relatively stable in the aspect of zooplankton, accordingly, micro-ecological balance of the aquaculture water can be improved and stabilized, the yield can be increased, the earnings can be increased for a farmer, and the method can be widely applied to ecological breeding of various types of aquatic animals and plants.

The invention discloses a submerged macrophytes restoring process guided by water conservation fishery. By stocking silver carp and bighead carp and reducing COD (chemical oxygen demand), TP (total phosphor), chlorophyll and other chemical indexes of the water body, the process effectively reduces the algae biomass in the water body, improves the water body transparency, and achieves the aim of preventing algal bloom and improving the water quality, so an excellent growing condition is provided for aquatic macrophytes (in particular, the submerged macrophytes); and by adding fish and other key organisms eating attaching organisms, which is a key link in a food chain, the attaching organisms growing vigorously on the surface of the submerged macrophytes can be removed in time, and the aim of restoring the submerged macrophytes can be achieved.

The invention belongs to the technical field of environment protection and particularly relates to an in-situ combination method used for surface water black odorous sediment remediation. The method includes: adding zeolite modified by zirconium to a position above a sediment-water interface, and stirring or hydraulically disturbing to mix sediment with the zeolite modified by the zirconium; injecting nitrate into the sediment; adding the zeolite modified by the zirconium and zeolite to the position above the sediment-water interface to form a first covering system; covering the first covering system with a second covering system built by geotechnical cloth wrapping special absorbent materials; continuously remedying for a certain period of time, then removing the second covering system, and allowing the first covering system to be still placed at the position above the sediment-water interface. The method has the advantages that the method combines nitrate injection, adding of the zeolite modified by the zirconium, covering by the zeolite/zeolite modified by the zirconium mixture and covering by the geotechnical cloth wrapping the special absorbent materials to remedy the black odorous sediment and control the release of sediment ammonia, nitrogen and total phosphorus, and the method can effectively prevent the nitrate from leaking into overlying water.

The invention discloses a hydraulic spray seeding matrix for slope ecological restoration. The hydraulic spray seeding matrix comprises, by weight, 60-85 parts of wood fiber, 2-8 parts of a water-retaining agent, 1-5 parts of a binding agent, 5-15 parts of organic fertilizer, 0.4-4 parts of a soil conditioner and 0.5-5 parts of a complex microbial agent. The soil conditioner is formed by calciningof at least one of clinoptilolite, sepiolite, attapulgite and crushed corncobs, and the complex microbial agent includes an antifungal agent, a cleansing bacterial agent and an azotobacterin which are mixed together. The hydraulic spray matrix is directly sprayed on the slope to form a matrix layer after mixture of seeds and water and can effectively reduce the amount of soil and purify water quality.

A method for purifying water quality by net cage grass breeding achieves deep purification for urban sewage and aquatic flowers and vegetables plantation in lakeside. Its advantages include to improve water quality and environment, and to realize non-foaming oxygen supply.

The invention discloses a degraded lake restoration method which comprises the following steps: building an artificial wetland surround a degraded lake; establishing aquatic plants along the bank of the degraded lake, wherein the aquatic plants adopt one or any combination of lotus, reed, cattail, calamus, banana-plant, water chestnut, gorgon fruit, canna, pontederia cordata, Chinese pennisetum, scirpoides holoschoenus, rhizoma alismatis, ottelia acuminate, tape grass, hornwort, ottelia alismoides, hydrilla and duckweed; adding a flocculating agent into the degraded lake, wherein the adding amount of the flocculating agent is 20 to 300 g per cubic meter, the flocculating agent comprises polymeric silicate, polyaluminium chloride and polyaluminium sulfate, and the mass ratio of the polymeric silicate to the polyaluminium chloride to the polyaluminium sulfate is (0.5-2):(1-20):(1-20); putting microbial agents in the degraded lake, wherein eutrophic water-resistant animals are bred in the water. By the degraded lake restoration method, the degraded lake can be ecological restored effectively. The dissolved oxygen content of the degraded lake is obviously increased, and the chemical oxygen demand, the ammonia nitrogen content, the total phosphorus content and the total nitrogen content are obviously reduced.

The invention relates to a treatment method and equipment for sewage generated by harmless treatment of animal carcasses, and belongs to the technical field of industrial sewage treatment. According to the technical scheme, the equipment comprises pretreatment equipment, biochemical treatment equipment and disinfection equipment. After large-particle impurities in the sewage generated by harmlesstreatment of animal carcasses are removed by gratings, the sewage is pumped into a gas floating machine through an adjusting tank lifting pump in an adjusting tank, and pollutants such as most suspended solid (SS) and chemical oxygen demand (COD), a part of ammonia nitrogen, and the like in the sewage is removed by a gas floatation effect. An anoxic tank (6), a moving bed biofilm reactor (MBBR) tank (9) and a facultative membrane bioreactor (MBR) membrane tank (12) are combined for performing biochemical treatment; a sludge tank is used for residue discharging of the gas floating machine and asmall amount of sludge discharging of the facultative MBR membrane tank; and the disinfection equipment is ultraviolet disinfection equipment. According to the invention, the process of treating thesewage by a conventional process is greatly simplified, the occupied area is small, and the treatment cost of each ton of water is low.

The invention relates to a petrochemical RO concentrated brine treatment system and a method thereof. The system comprises a first high-efficiency precipitation unit, an ozone catalytic oxidation unit, a blowing-off unit, a denitrification unit, an MBBR aerobic unit and a second high-efficiency precipitation unit which are sequentially communicated along the flow direction of concentrated brine, the first high-efficiency precipitation unit is used for removing hard and suspended substances, and the second high-efficiency precipitation unit is used for removing phosphorus and substances, the first high-efficiency precipitation unit is connected with a water inlet pipe, the second high-efficiency precipitation unit is connected with a first water outlet pipe, and the blowing-off unit comprises a blowing-off tank, wherein a blowing-off piece for introducing nitrogen into the concentrated brine in the blowing-off tank is arranged in the blowing-off tank; the treatment method comprises: hard substance removal, coagulation, flocculation, precipitation separation, ozone oxidation, nitrogen stripping, MBBR treatment and phosphorus removal and precipitation. The petrochemical RO concentrated brine treatment system has the advantages that the RO concentrated brine can be treated, COD, total phosphorus, hardness, alkalinity and total nitrogen in the RO concentrated brine are reduced, so that the RO concentrated brine can be discharged up to standard, especially nitrate nitrogen in the concentrated brine can be obviously reduced, and the total nitrogen in the discharged concentrated brine is less than or equal to 10 mg/L.

An agent delivery device is mounted in an excavator, and can be used in match with mechanical equipment provided with hydraulic systems. An agent hopper used for storing an agent is arranged above a cover plate of a distributor of a hydraulic excavator. A spiral conveyor shell penetrates and is connected to the lower part of the agent hopper. A medium mixing container formed by separating the spiral conveyor shell with a valve plate is outside the shell of the agent hopper. An agent and sludge are uniformly mixed, thus achieving an objective of implanting the agent to bottom mud, promoting andactivating dominant microbes of a riverway to allow continuous mass propagation of the dominant microbes, and effectively reducing organic maters, total phosphorus, total nitrogen, COD, and other indexes of black and odorous bottom mud, and therefore, black and odorous phenomena of a water body are eliminated and a riverway self-cleaning capacity is recovered. Compared with traditional outward riverway sludge transportation, the device greatly saves the engineering cost, is convenient and rapid for sludge treatment, allows a black and odorous riverway to become clear, and is of great significance for environment protection.

The invention discloses a method for reducing total nitrogen, total phosphorus and COD in molasses alcohol waste mash. The method comprises the following steps: diluting the molasses alcohol waste mash till a COD value is 1800 to 2000 mg/L, adjusting the pH value to be 6.8 to 7.0 with a NaOH solution with the concentration being 1 mol/L, and performing sterilization for 20 min at 121 DEG C, so asto obtain a culture medium; inoculating microalgae into the culture medium, performing light shake-flask culture, ensuring that the light intensity is 3800 to 4200 lux, the shaker speed is 145 to 155r/min, and the culture temperature is 23 to 27 DEG C, and measuring total nitrogen, total phosphorus and COD values in the culture medium. The method has the advantages that the total nitrogen, totalphosphorus and COD values in the molasses alcohol waste mash through the microalgae, and pollution to the environment by reducing substance in the molasses alcohol waste mash is reduced; in addition,energy is saved, the treatment cost for the molasses alcohol waste mash is reduced, and the method is beneficial to environment protection.

The invention relates to a rapid water body repairing agent, in particular to a black and odorous water body rapid repairing agent which is prepared from the following components in parts by weight: 5-7 parts of a polyguanidine polymer bactericide, 77-79 parts of an inorganic polymer, 11-13 parts of a surfactant and 3-5 parts of calcium chloride. The invention has the beneficial effects that 1, the repairing agent has specific catalysis function and the reoxygenation rate is greatly improved; 2, soluble organic matter is oxidized, COD, BOD, ammonia nitrogen, total phosphorus and total nitrogen are reduced, and the water body function is improved; 3, harmful bacteria and viruses are wrapped to form countless bubbles, and harmful bacteria and viruses are quickly killed through sunlight refraction and reflection; and 4, decoloration is carried out, transparency is improved, and the water body becomes clear.

The invention relates to a method for removing glyphosate in wastewater. The method comprises the following steps: adding a right amount of complexing agent capable of specifically complexing glyphosate into glyphosate wastewater with a certain total phosphorus concentration, uniformly mixing, regulating the pH value to an acidic state, standing to precipitate, and filtering to obtain the treated wastewater. After wastewater is treated by the method, the total phosphorus removal rate is up to 97% or above, and the method can effectively remove glyphosate in the wastewater and lower the total phosphorus. By using the iron salt complexation precipitation to remove glyphosate in the wastewater, the method has the advantages of mild reaction conditions, low treatment cost, favorable effect and wide glyphosate wastewater concentration applicability, and is simple to operate.

The invention provides a petrochemical industry circulating sewage and RO concentrated water treatment system and a wastewater treatment process. The treatment system comprises a circulating sewage pretreatment unit, an RO concentrated water pretreatment unit, a biochemical treatment unit, a flocculent precipitation unit and a sludge dewatering unit. The novel petrochemical industry circulating sewage and RO concentrated water combined treatment process is wide in application range and high in impact resistance, the process is optimized, the route is clear and concise, sewage cleaning, flow dividing and quality dividing treatment is adopted for different types of sewage in front-end circulating sewage and RO concentrated water, a very good treatment effect can be achieved, and sewage treatment requirements are met. According to the process, the overall COD removal rate can reach 95% or above, the suspended matter (SS) removal rate can reach 98% or above, and the total phosphorus removal rate can reach 90% or above.

The invention relates to a pharmaceutical wastewater treatment process which comprises the following steps of: adding a flocculating agent into wastewater and precipitating, adding a demulsifier and the flocculating agent into the precipitated wastewater, removing slag at the same, adding bivalent magnesium ions into the slag-removed wastewater and carrying out reaction precipitation, introducingthe wastewater subjected to reaction precipitation into water oxidation equipment containing an oxidizing agent and a catalyst for reaction, controlling the temperature in the water oxidation equipment to be higher than 374.3 DEG C and the pressure to be higher than 22.05 MPa, and performing biological treatment and coagulation separation on the reacted wastewater. On the basis of the existing biological treatment method, a plurality of chemical and physical treatment means are added to treat various pollutants and toxicological components in the wastewater, so that the burden of a biologicaltreatment system is greatly reduced, and the purpose of final up-to-standard emission is achieved.

The invention discloses a sewage treatment agent and application of the sewage treatment agent. The sewage treatment agent comprises the following components in parts by weight: 40 to 55 parts of minerals, 20 to 40 parts of inorganic sulfate, 10 to 30 parts of inorganic carbonate or alkali and 1 to 5 parts of inorganic polymeric sulfate. The product is neutral, and the use of the product does not affect the pH value of an aqueous solution, and further is not affected by the pH value of sewage to be treated, and the sewage treatment agent is convenient to use, and can greatly lower the indexes of total phosphorus, total nitrogen and the like in an eutrophic water body, and the coagulated and settled flocculates are not dissolved in water again because the hydrophilicity is changed to hydrophobicity.

The invention discloses a method for reducing total nitrogen and total phosphorus in water of a prawn culture pond, and belongs to the field of aquaculture sewage treatment. The method comprises the steps of reasonable supplement of microalgae in a prawn culture pond, matching of the prawn culture pond and a shellfish culture pond and water circulation, fixation of a micro-ecological preparation in the shellfish culture pond and reasonable supplement of a carbon source in the shellfish culture pond, and the content of total nitrogen and total phosphorus in culture water can be effectively reduced through water circulation. The method is easy to operate and can meet the requirements of aquaculture tail water discharge standards, and has good environmental protection value and market application prospect.

The invention discloses a solar micro-power method and system for treating a pig farm biogas slurry biological matrix.The method comprises the following steps: A, building biological matrix pools, comprising: 1) building the biological matrix pools, 2) performing seepage prevention of the wall bodies and the bottoms of the biological matrix pools, 3) adjoining the first to fourth stages of the biological matrix pools, and 4) newly building a biological matrix pool; B, solar micro-aeration system designing and installing, comprising: 1) selecting and installing a solar micro-aeration machine, 2) designing and installing a solar cell panel and a storage battery, 3) designing and installing a time controller, (4) mounting a tool box, and (5) designing and installing an aeration disc; C, addition of a matrix material into a matrix digestion pool; and D, operation and management of the micro-aeration biological matrix treatment system. The system comprises the solar micro-aeration device, the biological matrix pools and a biological matrix material. The method is easy to implement, simple to operate, low in cost, good in treatment effect, simple in structure and convenient to use, and the occupied area of the sewage treatment system is greatly reduced.