2251 results about "Biological filter" patented technology

A vacuum control system controls the amount of time that pressure is applied to a breast and the amount of time no pressure is applied to the breast, independent of the vacuum level. The amount of time that pressure is applied to a breast and the amount of vacuum applied to the breast cups can be varied by the user. A disposable biological filter isolates the pump from the breast cups. The biological filter is packaged in a housing that has an O-ring push-in connector to connect the collection system to the pump. The vacuum applied to the breast cups is monitored. The control system maintains the vacuum at a level set by the user. A second higher level is used as a safety threshold. The control system shuts down the pump when this higher level is sensed. The breast cup is constructed to provide a controlled collapse when vacuum is applied to mimic the suckling of an infant.

The invention discloses a treatment method for high-concentration wastewater difficult to degrade. At the pretreatment stage, various pollution substances in wastewater are greatly degraded through the microelectrolysis reactor, Fenton reactor and multifunctional wastewater treatment machine combined mode, and meanwhile biodegradability of wastewater is regulated; at the biodegradation stage, most of pollution substances in wastewater can be treated and degraded by adopting the A2O and AO treatment process, conducting anaerobic, hypoxia and aerobiotic one-time biochemical and anaerobic and aerobiotic two-time biochemical treatment on wastewater and conducting ceaseless closed-loop inner circulation in the biochemical interior; at the after-treatment stage, by means of the multifunctional biological filter, multi-medium filtration and biological activated carbon adsorption combined treatment process, remaining pollution substances in wastewater can be degraded to the maximum extent or degraded after being adsorbed, and finally discharge water reaches the qualified emission target. The method is wide in application range, good in treatment effect and low in running cost, physical and biological treatment of high-concentration wastewater difficult to degrade is enhanced, and pollution of wastewater to the environment is reduced.

A wastewater treatment tank with influent gates (24) and pre-react zone with an outwardly flared lower portion. Influent passes over influent gates (24), which introduce turbulence, causing aeration, and reducing flow velocity. As influent flows out of the influent gate housing (20), flow velocity is further reduced by contact with the surface of the wastewater in the basin and influent flow is directed laterally by an influent gate bottom (30). A pre-react zone director (34) spaced apart from the bottom (42) of the basin encloses the influent gate housing (20) and utilizes an outwardly flared lower portion, or flap (38), to further reduce flow velocity and enhance laminar flow. This results in minimal disturbance of settled sludge blanket, allowing it to act as a natural biological filter, which in turn results in a superior supernatant.

The invention discloses a method for quickly starting a completely autotrophic nitrogen removal over nitrite process on sewage on the conditions of constant temperature and low ammonia nitrogen and belongs to the field of city sewage treatment and reutilization. The completely autotrophic nitrogen removal over nitrite (CANON) process is started in a biological filter tank reactor and comprises the following steps: firstly, nitrifying sludge by using an inoculating part, and performing aerobic nitrification start with sufficient oxygen supply to build a nitrosobacteria-dominated and nitrobacterium-dominated microorganism system; inhibiting the growth of nitrobacterium through intermittent aeration / anaerobism and enriching anaerobic ammonium oxidation bacteria; and finally, performing continuous aeration, controlling ammonia nitrogen to be oxidized to a stage of nitrous acid through restrictive oxygen supply, and optimizing microenvironment where nitrosobacteria and anaerobic ammonium oxidation bacteria coexist so as to successfully start the CANON process. By using the method, the problem that the growth enrichment of the anaerobic ammonium oxidation bacteria is slower for a long term can be solved; moreover, the starting way is simple and feasible, and the difficulty of the start of a single-stage autotrophic nitrogen removal system is reduced; and therefore, a method is provided to start the CANON process on stimulated waste water on the conditions of constant temperature and low ammonia nitrogen.

The invention discloses an ecological seawater rare fish factorization circulating water aquaculture system which comprises an aquaculture pond, a primary filter tower, an albumen segregator, a primary biological filter tower, a secondary biological filter tower, a tertiary biological filter tower, an algae treating pond, a source water filter pond, a UV (Ultraviolet) sterilizer, a temperature adjusting pond, an arc-shaped sieve, a primary sedimentation pond and a secondary sedimentation pond. A bidirectional drainage system is adopted by the aquaculture pond, the water containing less smaller particles at the lower part of the pond and the water containing more larger particles at the bottom of the pond are respectively drained and then input into different processing units for recycle. Molluscs, sea cucumbers and algae are drawn into aquaculture waste, wastewater disposal and resource utilization by the circulating water aquaculture system, so that the circulating water aquaculture system has an obvious ecological characteristic. The ecological seawater rare fish factorization circulating water aquaculture system has the advantages of high treatment efficiency of aquaculture wastewater and rubbish, simpler equipment, low energy consumption, high backwash efficiency, resource utilization of aquaculture wastewater and rubbish, less circulation supplement water, high treatment efficiency of inorganic nutrient salt in the water and high economic additional value.

The invention belongs to the technical field of sewage treatment, and relates to a rural domestic sewage biological treatment system, particularly a rural domestic sewage biological treatment system which has the advantages of low capital construction and operating cost, small occupied room, convenient operation and management, high sewage treatment efficiency and discharge after reaching the standard. The rural domestic sewage biological treatment system provided by the invention is connected with a rural domestic sewage discharge pipeline. The rural domestic sewage biological treatment system is characterized by comprising an ecological open septic tank, a microaeration oxidation pond, a suspended substance biological filter, an artificial wetland and a scenic pond, wherein the ecological open septic tank, microaeration oxidation pond, suspended substance biological filter, artificial wetland and scenic pond are arranged from high to low and communicated through a pipeline or ditch; the sewage flows under the gravity; and the water inlet of the ecological open septic tank is connected with the rural domestic sewage discharge pipeline. The rural domestic sewage biological treatment system provided by the invention solves the problem of large occupied area, high investment and maintenance cost and the like in other rural sewage treatment methods.

The invention relates to a coal chemical wastewater treatment method, in particular to a chemical wastewater treatment method. The invention aims to solve the problems of the chemical wastewater treatment method such as bad outlet water quality and high operational cost. The method comprises the following steps: pretreating coal chemical wastewater to be treated; then carrying out hydrolytic acidification treatment, external circulating anaerobic treatment, anaerobic sedimentation treatment, adjusting hydrolytic acidification treatment, contact oxidation treatment, sedimentation treatment, A / O treatment, sedimentation treatment, deamination treatment, coagulating sedimentation treatment and aeration biological filter tank treatment, wherein the temperature in an external circulating anaerobic tank is controlled within the scope of 32 to 35 DEG C; the hydraulic detention time is 24 to 36 h; the sludge concentration is controlled between 50 and 100 g / L; the volume load is 5 to 10 kg COD / m.d ; and the pH value is controlled between 7.0 and 7.5. The invention has the advantages of flexible operation, impact load resistance, low operating cost and good treatment effect; after the coal chemical wastewater is treated by the treatment method, the outlet water quality completely can achieve the wastewater comprehensive discharge standard regulated by the State.

The invention provides a processing technique of waste water containing antibiotic and the purpose thereof, wherein, the technique adopts the following steps: pretreatment, two-phase anaerobic, improving SBR, immobilized microorganism-aeration biological filter, and improving the coagulating sedimentation combination technique. The detailed technique is introduced in the specification. The invention has the advantages that the industrial waste water is pretreated and the two-phase anaerobic technique is adopted, the great mass of sulfate radical is eliminated, the treatment effect for producing firedamp anaerobic phase and the stability of operation are improved, the energy is recycled and the operating cost is lowered; through the immobilized microorganism-aeration biological filter, the biological treatment effect is improved, and the operating cost for back end processing is lowered; the deep processing can ensure that the waste water is discharged by reaching the standard, and can meet the requirement to the upgrade and reorganization of sewage treatment plants when the environment protection standard is improved in the future. The invention has the purpose that the processing technique not only is applicable to the treatment for the waster water containing antibiotic and the upgrade and reorganization of the prior engineering of sewage disposal, but also is applicable to the engineering of sewage disposal and other sewage disposals with high salt content, high sulfate radical content, high ammonia and nitrogen content, high COD content and higher concentration organic matter which is hard to be degraded.

A horizontal flow water treatment method and wetland biofilter apparatus provides a chamber with impermeable outer walls spaced away from permeable interior walls of a media filtration bed such that a catch basin is formed between the outer walls and the interior walls. The catch basin creates an open area around the perimeter of the interior walls for influent water to fill within the open area on all sides before penetrating the filtration media, providing a large surface area for influent water to interact with the media filtration bed. The influent water enters the catch basin in a horizontal flow path to provide for pre-settling of particulates before making contact with the filtration media. The biofilter design increases the available surface area of the media filtration bed by up to four times for a given volume of water, and thereby minimizes the loading or infiltration rate on the media filtration bed.

A biofilter system of the present invention utilizes an Alternating-Aerobic-Anoxic (AAA) process in a single reactor to provide efficient and cheap removal of carbonaceous materials, nitrogenous materials, and / or mixtures thereof from aqueous waste. The biofilter system of the present invention is particularly suitable for treating aqueous waste from aquaculture, industrial processes and animal husbandry. The biofilter system includes: a main biofilter chamber containing therein aerobic and anaerobic bacteria without physical separation; an inlet port and an outlet port connected to the main biofilter chamber; and a means for oxygenating the aerobic and anaerobic bacteria in the main biofilter chamber, including means for timing the oxygenation of the aerobic and anaerobic bacteria to provide alternating periods of high-oxygen conditions and anoxic conditions.

A biological deodouring process for the stink gas features that the stink gas is forced to pass through the biologic filter material prepared from anticorrosion plant fibres, porous materia, or theirmixture through inoculating microns (yeast, bacteria, etc) to it. Its apparatus is composed of blower, gas washing pool and biological filter tower. Its advantages are simple apparatus, high effect, low cost, and no secondary pollution.

A dual filtration lateral flow containment enclosure is described wherein an air evacuation system is used to provide negative airflow between an upstream filtration system and a downstream filtration system. The enclosure may be arranged such that there is no unfiltered venting between the environment and the interior of the enclosure if so desired. Furthermore, the filtration systems are arranged for the insertion of multiple types of filters, for example, HEPA filters, chemical filters, biological filters and the like for specific removal of air-borne materials from the air flow.

The invention discloses a natural pyrrhotite biological filter and a method for synchronously removing nitrate nitrogen and phosphorus out of water by using the natural pyrrhotite biological filter, which belongs to the field of advanced wastewater treatment. The method comprises the following steps: (1) preparing and constructing biological filter fillers; (2) starting the biological filter; and (3) operating the biological filter. Pyrrhotite is used as an electron donor of sulfur autotrophic denitrification bacteria to reduce nitrate in the water to nitrogen so as to remove nitrate nitrogen out of the water; and the pyrrhotite and an oxidative product of the pyrrhotite remove phosphorus in such manners as adsorption and chemical precipitation so as to synchronously remove nitrate nitrogen and phosphorus out of the water. The biological filter disclosed by the invention is simple to construct, convenient to start, stable to operate, high in nitrogen and phosphorus removal efficiency and free of auxiliary materials, and the biological filter is applied to advanced wastewater treatment.

The invention relates to a method for promoting sludge to be reduced by ozone, in particular to a technology used for pretreating the sludge and accelerating anaerobic sludge digestion speed by utilizing ozone oxidation technique, which is widely applied to the sludge treatment technique of a sewage plant. The method comprises: the residual sludge of the sewage plant is concentrated and then treated by a sludge pretreatment reactor; due to the strong oxidizing property of ozone, the cell wall and the cell membrane of microorganism inside the sludge are broken, and a great deal of organic matter is released out of cells; after being treated by the ozone, the sludge enters into an anaerobic digestion reactor, and anaerobic digestion can be carried out in a closed anaerobic state; gas generated by digestion is treated by a gas purifying device, and methane can be obtained; after anaerobic digestion, the sludge is treated by flocculation and dehydration, and dewatering sludge can be obtained; then, final treatment can be carried out, for example, the sludge can be used for manufacturing agricultural fertilizer, bricks, porcelain granules or auxiliary fuel of fire coal; and anaerobic supernate is treated by biological filtering bed technique, so that the organic matter, ammonia and nitrogen in the solution can be removed.

The invention discloses an integrated pre-denitrification and denitrogenation biological filter sewerage treatment process. The integrated process is characterized in that: the process is realized by combining an anoxic denitrification biological filter and an aerobic nitrification biological filter in tandem, first, sewage with organic substances and ammonia nitrogen is mixed with part of effluent water of the aerobic nitrification biological filter which flows back to a water inlet end, then the sewage and the effluent water pass the anoxic denitrification biological filter together, and the organic substances in the sewage are taken as a carbon source by denitrifying bacteria adhesively growing on bio-ceramsite in the anoxic denitrification biological filter to reduce nitrate nitrogen from the return water of the aerobic nitrification biological filter into nitrogen gas, thus realizing denitrification function; and the effluent water of the anoxic denitrification biological filter flows to the aerobic nitrification biological filter, and a filter material in the aerobic nitrification biological filter is adhered with special growing aerobic decarbonization microbes and the growing denitrifying bacteria which further degrade the organic substances and the ammonia nitrogen from the anoxic denitrification biological filter, thus causing content indicators of the organic substances, the ammonia nitrogen, total nitrogen and the like in the effluent water of the aerobic nitrification biological filter to meet the discharge requirement.

A self-contained aquaculture system comprising a modular building defining a first main chamber for containing fish or marine invertebrates, a second swirl chamber comprising a primary filter communicating with the main chamber for removing solids from the main chamber, a drum filter for receiving and filtering water from the swirl chamber, a third biological filter chamber beneath the drum filter for receiving water therefrom and a biological filter tank. Water is pumped from the chamber. The building defines an enclosed space over the chambers, the temperature of which is controlled by an air conditioning unit. A foam fractionator, ultraviolet unit and ozone generator are used for treating the water in the main chamber.

The invention belongs to protective fishery field, which in detail relates to two-cycle water treating system for industrialized fish culturing, with main characteristics being: internal recycle pool structure of various shape taking square outside and round inside as representation, cultivating fish in circular pool, the quadrangle outside pool is biological filter; water and pollution discharging pipe are equipped in bottom of pool; the mating outside circular system comprises drainage ditch, out biological filter and artificial wet land, feed ditch, pollution collecting tank; special air raising pump of U shape, high effective aeration, water raising cycle; the artificial wet land and out biological filter are combined together, depositing, filtering, adsorption, bacteria degradation, adsorption by aquatic plant and animal and cleaning water body high effectively; constructing open water inlet and outlet pitch which also used as biological filter by using fish pond to realize omni-bearing restore of cultivating wastewater. The invention is characterized by less equipment investment, low energy consumption, safe and reliable operation, convenient management and maintenance, outstanding ecological, economical and social benefit, low production cost and increased quantity and quality.

The invention discloses an ecological combined treatment method and device for rural distributed sewage. The method comprises the steps of A) rural sewage collection and pretreatment; B) treatment by a biological filter; C) treatment by an artificial wetland and a stabilization pond; D) ecological landscape configuration. The device is characterized in that a main water inlet pipeline is respectively connected with a lattice pool and a regulation pool, the regulation pool is connected with a horizontal flow biological filter through a water distribution pipe, the horizontal flow biological filter is connected with a vertical flow biological filter through a filter screen-water distribution pipe, the vertical flow biological filter is connected with a first-level artificial wetland via a perforated water collection pipe which is horizontally arranged, the first-level artificial wetland is connected with a second-level artificial wetland through an overflow weir, the second-level artificial wetland is connected with the stabilization pond through a straight flow water drain pipe, and a main water drain pipe is arranged at the tail end of the stabilization pond. According to the method, energy consumption is not required, the operation and the maintenance are simple and convenient, and the method further has the advantages of landscape effect, economic benefits, simple structure and low investment; high-efficient purification of rural distributed domestic and farming sewage is realized, and the removal rate of nitrogen, phosphorus, COD and the like in sewage is above 80% after treatment.

The invention discloses nano biological filler for purifying aquaculture wastewater in a biological filter tank and a preparation method of the nano biological filler. The biological filler comprises an EM rejuvenation solution and an adsorption carrier of the EM rejuvenation solution, wherein the EM rejuvenation solution is a product obtained by performing mixed fermentation on an EM stock solution, molasses and deionized water; the adsorption carrier is obtained by performing mixed pressing on composite nano powder, kaolin powder and modified bentonite; the composite nano powder is a product obtained by performing mixing and high-temperature sintering on nano-level aluminum oxide, titanium dioxide and silicon dioxide; modified bentonite is prepared from sodium diethyldithiocarbamate modified original soil. The preparation method comprises the following steps: pressing adsorption carrier particles; fermenting to obtain the EM rejuvenation solution; dipping the EM rejuvenation solution by using the adsorption carrier to obtain the nano biological filler. The obtained nano biological filler is high in pore volume, high in cell adsorption capacity, large in specific surface area and strong in stability, has a good treatment effect on aquaculture sewage, and can be used for rapidly removing ammonia nitrogen, phosphorus and heavy metal ions in an aquaculture water body.

The invention discloses a coking wastewater deep treatment and reuse process and equipment thereof, belonging to the technical field of environmental protection, and the main steps are as follows: dosing a coagulant in biochemical treatment water, then leading the biochemical treatment water to enter into a sedimentation tank, discharging sludge from a sludge hopper, leading treated water to enter into a three-dimensional electrode reactor, leading the outlet water after electro-oxidation treatment to enter into a biological filter tank, and leading the water after the treatment of the biological filter tank to enter into a follow-up ultrafiltration treatment; the ultrafiltration outlet water has two selections, one is to reuse the outlet water as the process water directly, the other one is to continuously pass through a reverse osmosis membrane system for treatment; and the coagulation and sedimentation tank, the process equipment of the three-dimensional electrode reactor, the biological filter tank, the ultrafiltration system and the reverse osmosis desalination system are adopted during the treatment process, thereby achieving the purposes of removing residual refractory organic matters, suspended impurities and salt in the waste water, reusing the outlet water, simultaneously leading the content of the organic matters in the reverse osmosis concentrated water not to exceed the national environmental protection standard, also reusing the concentrated water in occasions with less stringent requirements on the water quality and achieving the purpose of zero emission of the wastewater.

The invention discloses an oil-water separator comprising a water inlet, a water outlet, a container, a movable filter residue bucket, a fixed filter net, an oil storage area, a vortex shallow filter, a sludge bucket, an electronic integration controller, an oil suction port, a slag suction port and a biological filter disc, wherein the fixed filter net finely filters the wastewater; an oil drop of which the diameter is 10-100 microns is separated and ascended to the oil storage area in the vortex shallow filter; the sludge bucket concentrates the waste residue; the waste residue descends to the bottom of the sludge bucket to be gathered under the effect of gravity after participating on the sludge bucket; the oil suction port is used for absorbing oil; the slag suction port is used for absorbing the slag; the biological filter disc is used for discharging the residual sewage. By adopting the oil-water separator, the environment-friendly problem of emission of restaurant waste water is solved, so that the discharged water achieves the corresponding national emission standards, the congestion problems of drainage pipelines caused by waste oil wall built-up are solved, separated excessive oil impurities are solved, and the processing link of restaurant waste oil in specified use is reduced.

The invention extends the connotation range required to be protected on the basis of a previously issued patent ZL200710025045.4, i.e., a nanometer microcrystalline composite filter material and a preparation method thereof, belonging to the field of a water disposal technique material. According to weight percentage, the nanometer microcrystalline composite filter material comprises 3-95 percent of attapulgite clay, 5-80 percent of sepiolite clay, 2-25 percent of kaolinite clay, 2-97 percent of tubular halloysite, 5-75 percent of diatomite, 5-75 percent of natural zeolite (clinoptilolite, mordenite and the like), 0-25 percent of pillared montmorillonite, 0-50 percent of expanded vermiculite, 0-5 percent of expanded perlite and 0-50 percent of active carbon or bamboo carbon powders. All raw materials which are powder shapes are mixed according to proportion and stirred to granulate by adding an inorganic adhesive, then sintered and activated at the temperature of 900-500 DEG C (inert gas is required for sintering and activating the filter material added with active carbon). The nanometer microcrystalline composite filter material has smooth shape, rough surface and uniform particle size, with the diameter of 1-10mm, and is used for biological filter tanks and high-class adsorption filter materials in deep purification systems of drinking water and reclaimed water sewage disposal systems.

The invention relates to a sewage double-biomembrane deep treatment technology comprising the steps: sewage enters an anaerobic tank, an anoxic tank and an oxygen maintaining tank after being pretreated by a grid and settled sand, and mud releases phosphorus in the anaerobic tank; the sewage is denitrified in a denitrification mode in the anoxic tank so as to remove most of organic matters; cilium biological fillers are arranged in the oxygen maintaining tank, biomembranes are attached to the cilium, absorb the phosphorus in excess and degrade the partial organic matters; the sewage enters a secondary sedimentation tank to carry out sedimentation treatment through the oxygen maintaining tank and then enters an aeration biological filter tank; granule biological fillers are arranged in the aeration biological filter tank, and the biomembranes are attached to granules, degrade the residual organic matters in the sewage and convert ammonia nitrogen into nitrate nitrogen; one part of the discharged water of the aeration biological filter tank flows back into the anoxic tank, and the other part is discharged; one part of the mud generated by the secondary sedimentation tank back flows into the anoxic tank, and the other part of the mud is discharged out of a system. The sewage double-biomembrane deep treatment technology has the advantages of investment saving, low operation cost, little land occupation and good treatment effect.

The invention discloses a method for the advanced treatment of wastewater. The method comprises the following steps of: 1) filtering off-standard wastewater, delivering the wastewater into a catalytic ozonation tower, and simultaneously adding ozone for contact oxidization reaction; 2) delivering the effluent of the catalytic ozonation tower into an oxidization buffer stabilization basin for stabilization; 3) and after the stabilization, delivering the effluent into a BAF basin for treatment, and delivering discharged water into a clean water basin. The method reduces the addition amount of the ozone, improves the utilization efficiency of the ozone, converts the ozone into hydroxyl radicals by using a metal catalyst, and reduces the activation energy of hydroxyl radical oxidation reaction to promote hardly biodegradable macromolecule organic substances in the wastewater to be oxidized into easily biodegradable micromolecule substances, so that the biochemical limit to refining the wastewater is broken through and the biodegradability of the wastewater is increased; and the water quality of the effluent can meet the provincial standard of Jiangsu province, namely Chemical Industry Main Water Pollutant Discharge Standard, completely by further treatment in the BAF basin.

The invention discloses an indoor industrial penaeus vannamei culture device which comprises a plurality of culture ponds, a water inlet pipe and a culture water circulation system, wherein the culture water circulation system comprises a sedimentation pond, a floatation pond and a biological filter pond; the floatation pond is internally provided with an aerobiotic device, an aeration device and a foam sewage discharge device; the foam sewage discharge device comprises a foam guide pipe and a sewage pipeline; the foam guide pipe has a plurality of foam guide holes; the biological filter pond is connected with both protein separator and sand filtering tank; one end of the sand filtering tank is connected with the biological filter pond, and the other end of the sand filtering tank is connected with one end of an ultraviolet sterilizer; the other end of the ultraviolet sterilizer is connected with the water inlet pipe. The indoor industrial penaeus vannamei culture device disclosed by the invention has the advantages of simple structure, convenience in use and low investment cost, can be used for effectively pushing water inside a penaeus vannamei pond to flow so as to ensure that the water inside the penaeus vannamei pond is in a stable rotational flowing state, can effectively solve the problem that the sewage of the penaeus vannamei pond is effectively discharged in time in a low circulation volume state, is uniform in aeration, improves the utilization ratio of water used for culture, reduces the sewage discharge and reduces the medicine application.

For a long time, sewage plants are troubled by the problems of large energy consumption, high operating cost, foul odor generation and the like. Therefore, the invention provides a complex biological filter which can make use of a microbial metabolism to synchronously treating sewage and off odor, and comprises the following characteristics of: greatly saving aeration energy consumption and reducing the operating cost by supplying oxygen in a trickling filtration mode; forming an aerobic section and an anoxic section in the same biological filter by optimizing the structure of the biological filter, and supplementing a carbon source through water inflow distribution to ensure that the removal efficiency of total nitrogen is improved; improving the removal efficiency of total phosphorus in the sewage through enhanced phosphorus removal of a filling material; and saving a secondary sedimentation tank because the upper part of the complex biological filter generates a small amount of excess sludge and the anoxic section on the lower part can further perform filtration and interception.

A package cartridge is provided for use in the maintenance of a packing bore for a plunger-type pump. According to one aspect, a packing cartridge includes: a generally-cylindrical sleeve adapted to be at least partially positioned in the packing bore, a first abutment ring positioned in the sleeve, and a second abutment ring positioned in the sleeve and co-axially spaced apart from the first abutment ring. Telescoping structures are operatively positioned between the first abutment ring and the second abutment ring. According to another aspect, a structure forming a circumferential pressure-ring groove is provided. A pressure ring is positioned in the pressure-ring groove, the pressure ring having at least one smaller external dimension than an internal dimension of the pressure-ring groove, whereby at least one clearance is provided between the pressure-ring groove and the pressure ring. According to yet another aspect, a bio-filter element is provided with the packing cartridge to reduce volatile organic compound (“VOC”) emissions from a pump used for pumping hydrocarbon materials such as oil or gas. According to still yet another aspect, a method of controlling emissions from a pump for pumping hydrocarbons is provided, including the steps of enclosing the power end of the pump and positioned a VOC absorbing material within the enclosure. These aspects can be advantageously practiced together.

The invention discloses a reclaimed water treatment system combining an upflow aerating biological filter with horizontal underflow artificial wetland. The system consists of the upflow aerating biological filter and the horizontal underflow artificial wetland; the upflow aerating biological filter comprises a water inlet guide tube positioned at the bottom of the filter; a filter plate, a supporting layer, an A section filler area, a B section filler area and a water outlet area are sequentially arranged above the water inlet guide pipe; a communicating water pipe is mounted on the water outlet area, and communicated with a regulating tank of the horizontal underflow artificial wetland; an aerator pipe is led out of the supporting layer; the regulating tank and a matrix area parallel to the regulating tank are arranged at the lower layer of the horizontal underflow artificial wetland; the matrix area sequentially comprises a macadam area, a steel slag area, a zeolite area and a water outlet gravel area from left to right; the water outlet gravel area is equipped with a water outlet pipe; and a soil covering layer and aquatic plants are arranged at the upper layer of the horizontal underflow artificial wetland. With the adoption of the system, on-site treatment and utilization of sewage are achieved; the sewage treatment process flow is simplified; and operation and management costs are lowered.

This invention relates to water disposal facility and means of integrated ozone and aerating biological filter. This aerating biological filter(9) is above ozone catalysis chamber(8), connects with ozone catalysis chamber(8) through the filter plate of biological filter(9); ozone catalysis chamber joints with Venturi tube(5), Venturi tube(5) respectively joints with ozone occurring system(6) and influent water pump(1); ozone occurring system(6) is a ozonizer that by silent discharge method translate oxygen of air into ozone. The water after pretreatment by ozone passes the filter plate of the aeration biological filter pool at the top of the ozone reaction chamber to enter the biological filter pool uniformly and stay for about 1 to 4 hours. This invention can advance aerating efficiency without fixing aerating system, and the flow between aerating biological filter and ozonization buffer pool cell is equilibrium, possess merits of high efficiency, low cost and so on.

The invention provides a method for treating or recycling waste water with a high salt content and applications. The method adopts combination processes of pretreatment, a high-efficiency aeration biological filter and depth treatment; and the detail process is shown in the description. The method of invention has the advantages of rapid degradation speed of the high-efficiency aeration biological filter to the pollutants in waste water, high treatment efficiency, good salt resistance, strong anti-impact capacity, stable operation and less sludge generation amount, and being beneficial for enrichment of halotolerant bacteria; the high-efficiency aeration biological filter is taken as a pretreatment process of the membrane treatment, which can effectively prevent membrane surface from scaling, prevent the membrane from being polluted and plugged by colloidal substances, suspended solid grains, organic matters and microorganisms, prolongs reverse purging period, increases the service life of the membrane, keeps stable water generation amount of a membrane system, thus lowering the operation cost. The invention is not only suitable for standard discharge or recycling of concentrated solution before the membrane separation in a membrane separation process, bus also suitable for treatment and recycling of waste water with a high salt content, such as oil extraction waste water and the like, and transformation and upgrading of the existing engineering.