79results about How to "Reduce the content of suspended solids" patented technology

The invention discloses a spiral extrusion type solid-liquid separator. The spiral extrusion type solid-liquid separator comprises a feeding mechanism, a power mechanism, a spiral extrusion mechanism, a solid discharging mechanism and a liquid discharging mechanism, wherein the spiral extrusion mechanism comprises a main body sleeve, a filter screen cylinder and a packing auger; the filter screen cylinder is arranged in the main body sleeve, and the packing auger is arranged in the filter screen cylinder; blades of the packing auger are composed of spiral blade bodies and high-wear-resisting rubber coating strips coated on the outer edges of the spiral blade bodies; the packing auger comprises a front section packing auger body and a rear section packing auger body; the filter screen cylinder comprises a front section filter screen cylinder body and a rear section filter screen cylinder body; and the solid discharging mechanism is characterized in that an annular cover plate is arranged at the position of a discharging port of the main body sleeve, and the annular cover plate is connected with a compression spring in an abutting manner. Meanwhile, the invention further discloses a solid-liquid separating method using the spiral extrusion type solid-liquid separator. The spiral extrusion type solid-liquid separator has multiple good effects when being used for conducting solid-liquid separation on feces of beasts and birds, biogas residue and the like.

The invention discloses an environment-friendly oil field sludge treating agent and a preparation method thereof. The environment-friendly oil field sludge treating agent comprises surface active substances and a PH value regulator, wherein the surface active substances are an anionic surfactant and a nonionic surfactant. The preparation method comprises the following steps: adding the anionic surfactant into a reaction kettle according to a proportion, adding water, stirring for 10 minutes, controlling the temperature to be 50 DEG C, adding the PH value regulator, stirring for 5 minutes, adding the nonionic surfactant, and stirring for 10 minutes, so as to obtain the environment-friendly oil field sludge treating agent. The environment-friendly oil field sludge treating agent can be used for not only stripping crude oil on the surface of sludge for cleaning, but also reducing the oil sand content of oil slick at the upper part of sludge, and the oil content and the suspension content of water in the middle of the sludge, thereby being low in carbon and environmentally friendly.

The invention discloses a kitchen wastewater treatment method which comprises the following steps: 1, chemical phosphorus removal is performed on kitchen wastewater flowing out from an IC (internal circulation) reactor; 2, after passing through a water quality equalization tank, the wastewater enters a CASS (Cyclic Activated Sludge System) to react, so that soluble substrates, organisms, phosphorus and an synchronous nitrification and denitrification effect are removed; 3, after the wastewater flows into an intermediate water tank to be subjected to volume regulation, the wastewater enters a Fenton oxidation reactor and an iron-carbon micro-electrolysis device so as to improve biodegradability of the wastewater; 4, after passing through the Fenton oxidation reactor and the iron-carbon micro-electrolysis device, the wastewater directly enters a hydrolysis acidification pool from the intermediate water tank, suspended matter and iron ions are removed and sludge is separated, hydrolyzed and acidified; 5, the wastewater is subjected to aerated oxidation to remove COD (Chemical Oxygen Demand) content; 6, the wastewater enters an MBR (Meane Biological Reactor) pool and hardly degradable substances are degraded, so that the drained wastewater reaches the take-over standard of a sewage treatment plant; 7, after the sludge discharged from a chemical phosphorus removal pool and the MBR pool is processed by a precision solid-liquid separator, solids are prepared into an organic fertilizer and filter-pressing liquid enters the water quality equalization tank.

The invention discloses a treatment process for gas field foam water up-to-standard discharge. The treatment process comprises the following procedures: performing oil isolation treatment, performing demulsification treatment, performing water quality conditioning treatment, performing coagulation treatment, performing synergic oxidation treatment, performing complexing coagulantion enhancement treatment, performing softening treatment, performing falling film/forced circulation evaporation crystallization treatment, and finally performing up-to-standard discharge on obtained condensed water. By adopting the treatment process, low-cost up-to-standard discharge treatment on various types of high-salt foam water can be achieved.

The invention discloses a combined artificial wetland process system for nitrogen and phosphorus removal. The combined artificial wetland process system comprises a water incoming pipe, a water outgoing pipe and combined artificial wetlands mutually connected serially between the water incoming pipe and the water outgoing pipe, each combined artificial wetland comprises an aerobic biological pond in the upper reach and an artificial wetland in the lower reach, and each artificial wetland comprises a plurality of artificial wetland units; in the artificial wetland of the first combined artificial wetland, the artificial wetland units are parallelly connected mutually and are all vertical underflow artificial wetland units; in the artificial wetland of each of other combined artificial wetlands except for the first combined artificial wetland, the artificial wetland comprises a plurality of groups formed by the artificial wetland units which are serially connected mutually, and the groups are mutually connected parallelly; the artificial wetland units in each group include horizontal underflow artificial wetland units and surface flow artificial wetland units. The combined artificial wetland process system has an efficient nitrogen and phosphorus removal function and can obviously improve water quality.

The invention discloses a method for comprehensively improving quality of an eutrophic water body. The method includes the following steps of early-stage processing, dividing the water body, constructing an ecological floating bed, arranging an artificial attachment medium and planting vegetation. According to the method for comprehensively improving quality of the eutrophic water body, the water body dividing technology, the ecological floating bed technology, the artificial attachment medium and the vegetation planting and recovering technology are comprehensively used, the composition of phytoplankton structure in the water body can be changed, the percentage of diatom is increased, the percentage of blue-green algae is reduced, the possibility of cyanobacterial bloom is reduced, the eutrophication trend of the water body is correspondingly inhibited, the eutrophication degree of the water body is reduced, and water quality condition is improved. By adopting the method, the concentration of chlorophyll and chemical oxygen consumption in the water body can be reduced, the content of total nitrogen and total phosphorus is reduced, the content of suspended solids in the water body is reduced, the transparency of the water body is improved, the eutrophication trend is inhibited, and the quality of the eutrophication water body is effectively improved.

The invention discloses a method for pretreating organic wastewater. The method comprises the following steps: (1) adding a magnetic seed into organic wastewater to be treated, and quickly stirring for 1-2 minutes; (2) adding a flocculating agent, and quickly stirring for 1-2 minutes; (3) adding coagulant aid, quickly stirring for 5-30 seconds, and slowly stirring for 1-2 minutes; (4) standing to precipitate, draining and discharging slurry, wherein the speed of quickly stirring is 150-400r/min, and the speed of slow stirring is 30-80r/min. According to the method, heavy metal, antibiotic and other micropollutants can be removed by adding the magnetic seed to reinforce the coagulating process, so that high solid content, and the suspended solid content, COD concentration and total phosphorous concentration of high-concentration wastewater can be effectively reduced, and load of subsequent treatment units can be reduced.

The invention relates to the field of wastewater treatment and discloses a treatment method of desulfurization wastewater. The method comprises pretreatment, ultrafiltration treatment, nanofiltration treatment, membrane concentration treatment, MVR evaporative crystallization and flue evaporation treatment on the desulfurization wastewater in sequence. Pretreatment, ultrafiltration, nanofiltration, membrane concentration, MVR evaporative crystallization treatment and flue evaporation treatment are organically combined, so that zero emission of the desulfurization wastewater is achieved.

The invention provides a pre-treating clean production additive with the characteristics of high efficiency and short flow. The characteristic additive components includes: enzyme 90%, pure water 1%, hydrogen peroxide decomposer 3%, NaCl 5%, and other additives. The invention is mainly used in the fabric working procedures of polishing and desizing. The smooth and soft fabric effect can be achieved through the enzyme hydrolyzing fabric in order to enable the fabric fluff to be divorced from the fabric surface, and meanwhile the slurry on the grey clothes can be removed through desizing reaction in order to guarantee the qualities of printing and dyeing products. The dosages of water, electricity, and gas are saved, and the cost for processing waste water is reduced.

The invention provides a purification device for aquaculture tail water. The purification device comprises foam float pieces, steel pipes and a nylon net, wherein the foam float pieces are tied to thesteel pipes, and a square is defined by the four steel pipes tied with the foam float pieces floats on the water surface; the nylon net extends upwards out of the water surface and goes deep downwards into the water, and the parts, extending upwards out of the water surface, of the nylon net are tied to the steel pipes through ropes; a floating plant control-culture fence is defined by the square, defined by the four steel pipes tied with the foam float pieces, and the nylon net tied to the steel pipes; the lower end of the nylon net is weighed down by a stone cage filled with stone. The purification device for the aquaculture tail water can realize purification of the aquaculture tail water, occupies little space and is low in cost, simple to maintain and high in purification efficiency.

The invention relates to a titanium dioxide production method, in particular to a decomposing titanium liquor purification method and a filter for the same during titanium dioxide production. The decomposing titanium liquor purification method includes the steps of precipitating decomposing titanium liquor, and filtering precipitated decomposing titanium liquor through a tubular filter so as to obtain purified decomposing titanium liquor. The decomposing titanium liquor purification method is time saving, labor saving and capable of reducing production cost and improving product performance and is widely applicable.

The invention discloses an anti-blocking baffling type percolation dam which comprises a retaining dam body, a downstream percolation area, a partition wall, an upstream percolation area and a side wall. A water body in a river channel flows into the downstream percolation area through a water inlet inclined pipe arranged on the retaining dam body, then passes through a water passing hole in the bottom of the partition wall to flow into the upstream percolation area and flows out of the top of the upstream percolation area. The water inlet inclined pipe is adopted for water inputting, the upstream and downstream baffling mode is adopted in the percolation areas, emerging and sinking multi-element vegetable layers are adopted, and the dam has the advantages of being good in anti-blocking effect, high in filtering efficiency and good in purification and landscape effect.

The invention discloses a fine-fraction high-concentration tailing filling and thickening device which comprises a tank body part, a wind-water slurry making system, an underflow conveying system, an electric control system, a flocculating agent preparing and adding system and the like. The wind-water slurry making system comprises an annular water pipe group and an annular gas pipe group; annular water pipes of all layers of the annular water pipe group and annular air pipes of all layers of the annular air pipe group are located at different height positions and distributed in an inverted cone shape, the annular water pipes and the annular air pipes of each layer are respectively connected with a plurality of high-pressure rubber water (air) spraying pipes, valves and external water (wind) slurry making nozzles; and the annular water pipes are connected with a water supply and drainage header pipe, and the annular air pipes are connected with an air supply and exhaust header pipe. By means of the fine-fraction high-concentration tailing filling and thickening device, the material storage capacity is large, the mining and filling circulation efficiency of a mine is improved, no power part exists, fault points are few, power consumption is low, and the operation cost is low; and long-time continuous steady-state slurry discharging is achieved, the stability of technological parameters and the working efficiency of filling operation are improved, the concentration capacity of the thickening device is improved, and the continuity of filling operation of the thickening device is guaranteed.

The invention relates to an engineering method for recycling high-suspended solid concentration wastewater, and provides a reliable novel scheme tested in practice for treating and recycling the wastewater rich in suspended solids. The specific process adopts a primary treatment-secondary treatment-tertiary treatment design process, and comprises a sludge treatment system, and a recycle water supply system is connected in the follow-up process. Especially, a spiral grid machine, a vibrating screen classifier, an integrated air flotation device, a vertical fiber cloth filter and the like are reasonably matched, thereby performing multi-stage solid-liquid separation on the wastewater, and fully exerting the functions and advantages of various equipment, so that a large amount of suspended solids and organic matter in the wastewater can be effectively removed. Finally, the water resources are recycled by a recycling system, and discharged mud and discharged slag are treated by the sludgeto be recycled or form a mud cake for further treatment. The method provided by the invention solves the problem that the influent suspended matter content is too high and the effluent water is difficult to reach the recycle water standard, and the treatment effect is good, the utilization value of useful resources is also improved, and the generalizability is extremely high.

The invention discloses a wastewater treatment method and a wastewater treatment system based on a sequencing batch membrane biological reaction. The treatment method comprises the following steps: performing a magnetic coagulation reaction on wastewater to be treated so as to obtain first wastewater; and carrying out a biological denitrification reaction on the first wastewater to allow the firstwastewater to reach the standard, thereby completing wastewater treatment. A magnetic coagulation device provided by the invention is especially innovative for a high-solid-content and high-concentration wastewater pretreatment method, and through addition of magnetic seeds, the structure and density of floc are effectively improved, the precipitation performance of the floc is enhanced, and coagulation treatment effect is improved; and the magnetic coagulation method adopted by the invention can effectively reduce the suspended solid content, COD concentration and total phosphorus concentration of high-solid-content and high-concentration wastewater, and thus reduces the load of a subsequent biological treatment unit.

The invention relates to a filter-well circulating purification system and a method for purifying river by using the same. The system consists of a filter bed, water filter pipes, a collector pipe, a filter well, a submersible pump and a connection pipeline, wherein a mortar stone masonry wall is formed at the periphery of the filter bed, and an erosion preventing layer, a filter material layer and a bearing layer are arranged inside a stonewall sequentially from top to bottom; the collector pipe is arranged on the middle part of the bearing layer horizontally, and one end of the collector pipe passes through the stonewall closed to one side of a river bank and is connected with the filter well; a plurality of openings are formed on both sides of the collector pipe, and each opening is connected with one water filter pipe; the water filter pipes are arranged on the middle part of the bearing layer horizontally; a plurality of open holes are formed on each water filter pipe; the filter well is arranged outside a riverway, and the bottom surface of the filter well is lower than a river bed; and the submersible pump is arranged at the bottom of the filter well, and a water outlet of the submersible pump is connected with an upstream riverway by a pipeline. After being filtered by the filter material layer, the river is collected to the filter well outside the riverway by the water filter pipe and the collector pipe, is pumped by the submersible pump and is conveyed to the upstream of the filter well by the pipeline, so that a water body in the riverway is filtered, purified and circulated.

The invention discloses a multistage AO-MBBR (anaerobic-moving bed biofilm reactor) technological sewage treatment device with an adjustable stage number and a treatment method implemented by the aidof the multistage AO-MBBR technological sewage treatment device, and belongs to the technical field of sewage treatment. The multistage AO-MBBR technological sewage treatment device comprises a firstbiochemical reaction basin, a second biochemical reaction basin, a sedimentation basin, a phosphorus removal filter basin and a water inlet main pipe. A first insertion groove, a second insertion groove, a third insertion groove and a fourth insertion groove are formed in an inner basin wall of the first biochemical reaction basin; a fifth insertion groove, a sixth insertion groove, a seventh insertion groove and an eighth insertion groove are formed in a basin wall of the second biochemical reaction basin, and the first biochemical reaction basin is communicated with the second biochemical reaction basin; the sedimentation basin is communicated with the second biochemical reaction basin, a water via net is arranged at a communicated position of the sedimentation basin and the second biochemical reaction basin, a sludge sedimentation hopper and a sludge discharge pipe are arranged in the sedimentation basin, the sludge discharge pipe is arranged at the bottom of the sludge sedimentation hopper, and the sedimentation basin is further communicated with the phosphorus removal filter basin. The multistage AO-MBBR technological sewage treatment device and the treatment method have the advantages that multistage AO systems which are serially connected with one another are formed, the locations of insertion plates can be adjusted, accordingly, the multistage AO-MBBR technological sewage treatment device and the treatment method are high in adaptability to domestic sewage with different levels of pollution load, effluent treatment procedures are pertinent, and sewage treatment effects can be guaranteed.

The invention discloses a method for wastewater zero discharging of the leather industry. The method is characterized by comprising the following steps of 1, cow leather preprocessing, 2, softening processing, 3, oxidation aeration processing, 4, sedimentation, and 5, filtering and oil removal. According to the softening processing in the leather manufacturing process, fur is prevented from being degraded by a chemical reducing agent, and COD and BOD loads in a depilation waste liquid are reduced. According to the oxidation aeration processing, the load impact resistance is large; the physical technology is utilized for reducing the dosage of harmful chemical substances and lowering the suspended matter content in wastewater, a solid-liquid separator is used for solid-liquid separation, and the amount of metal ions is decreased; according to the step of filtering and oil removal, oil components are removed, the processing efficiency is high, it is ensured that water flows out stably, the water quality is reliable, resources are saved, and the environment is protected.

The invention discloses an ash water circulation treatment system of a wet electric precipitator. The ash water circulation treatment system comprises an ash water tank for collecting ash water, a spraying device for removing dust, a circulating water system and a process water system, wherein ion exchange equipment is further connected between a sedimentation basin and the spraying device. The ash water circulation treatment system has the following advantages and effects: alkali liquor and a coagulant are respectively added into a circulating water pool and a process water pool, so that slightly soluble matters in water are changed into soluble sodium salt, suspended solids coagulate and settle down, and the content of the suspended solids is reduced; moreover, the PH value of the water is controlled to be 7 or less, the water is in a near-neutral and slightly acidic state, and corrosion to metal can be reduced.

The invention belongs to the field of sludge treatment, and particularly relates to a quick dewatering process for city watercourse sludge. The dewatering process for the city watercourse sludge includes putting the sludge into a stacking pool, stirring the sludge, adding polyanionic celluloses, performing initial dewatering, adding composite flocculants, stirring evenly, and deterring the sludge in a belt filter press to obtain dewatered sludge. The dewatering process has the advantages of simple operation, good dewatering effect and capability of improving water quality of sludge filter liquor and reducing environment pollution, is a low-cost environment-friendly sludge dewatering process and is beneficial to mass promotion and application.