97 results about "Sedimentation process" patented technology

The invention is concerned with a kind of high efficiency water treatment equipment and technology belonging to water treatment field. The middle parts of the equipment are two flocculating rooms having mesh setting with disturbing flow, and the bottom of the flocculating room is precipitation tank. The suspending layer of active mud residue is out of the flocculating room and there is slanting pipe on top of it and concentrate room under it. The pipe excluding residue sets in the suspending layer of active mud residue, and the bottom of clean tank is filler to exclude residue, and there is siphon pipe connecting with the filler. There are grooves excluding residue at top of the flocculating room connecting with the pipe excluding residue and the siphon pipe connects with the residue reuse tank. The filler to exclude residue connects with a pump of reused residue. The equipment gathers the small air flotation, flocculating, active mud residue layer flocculating, and reused technology. Compared with traditional mixed and coagulate deposition technology, it saves 40 percent of field, reduces 10 percent of drug and enhances 15 percent disposal efficiency.

The invention discloses an unpowered quantitative dosing and mixed wastewater treatment device, which is provided with a turnover water tank and a water tank turnover balance weight block arranged at the lower part of the water tank. When the water tank is positioned in a balanced position, the upper part of the water tank is provided with an opening, and the opening is greater than the bottom part of the water tank; a wastewater inlet is arranged above the water tank; and a quantitative dosing mechanism in turnover linkage with the water tank is also arranged above the water tank. The invention also discloses use and adjustment methods of the wastewater treatment device. The technical scheme in the invention can reduce the volume of equipment which is suitable to be used by a single restaurant or a single bath center; and the equipment is a rectangular tank body and is convenient to move and mount, can finish automatic wastewater metering, automatic quantitative dosing, automatic mixing and stirring and primary sedimentation processes without using electric power except for replacing medicament bottles manually, and adopts a secondary sedimentation tank flush with the ground so as to finish the whole process of wastewater treatment.

The invention discloses a high-efficiency dense-medium coagulating sedimentation water treatment process. The high-efficiency dense-medium coagulating sedimentation water treatment process mainly comprises a water tank, a submersible pump, a coagulating tank, a sludge tank, a stirrer, a dense medium automatic feeding device, a primary separator, a secondary separator, a dense medium mixing reaction tank, a dosing pump, a dosing tank, a curing tank, a deflocculating machine, a sludge pump, a rapid sedimentation tank, a sludge pipe, a pipeline mixer and the like, wherein the raw water tank is connected to a flocculating reactor through a pipeline of the submersible pump; the flocculating reactor comprises the coagulating tank, the dense medium mixing reaction tank and the curing tank which are sequentially communicated with one another; the flocculating reactor and the rapid sedimentation tank are connected with each other through a pipeline; the excess sludge at bottoms of the flocculating reactor and the rapid sedimentation tank is connected to a dense medium recovery system through pipelines; a dense medium enters the flocculating reactor through the pipeline after the recovery is completed so as to form circulation. The process disclosed by the invention has the characteristics of land using area and civil engineering cost saving, relatively high stability of water treatment effect, cyclic utilization of the dense medium and the like.

The invention relates to an adaptive automatic control method for water treatment through magnetic medium coagulation and sedimentation. The method comprises the following steps: constructing a magnetic medium coagulation and sedimentation system, establishing a chemical initial feeding curve expert database based on traditional experience based on influent process parameters of the magnetic medium coagulation and sedimentation system, conducting trial drug addition, using an alumen ustum image acquisition system to perform tracking shooting and image recognition and analysis, confirming the effect of chemical feeding, and performing adaptive correction and optimization on the expert database according to the actual operating conditions of the system so as to form a chemical feeding curvefor the updated operating condition. The method has the advantages that the chemical initial feeding curve expert database is formed according to expert experience, the chemical initial feeding curveexpert database is dynamically corrected and optimized by using real-time or manual set data of multiple-control factors so as to form the chemical feeding curve of the updated operating condition, and the curve is used for guiding an automatic control system to perform automatic and accurate feeding of three reagents, so that the remote one-button start-stop equipment is achieved.

The invention discloses a fluorine removing process and a fluorine removing device for drinking water, and relates to a water treatment process and a water treatment device. The process at least comprises two treatment steps of coagulating sedimentation and adsorption, wherein the coagulating sedimentation is that fluorinated water is subjected to coagulating sedimentation through an inorganic aluminum coagulant agent to make the fluorine content of the treated water less than 2mg/l; and the adsorption is that an adsorbent is adopted for adsorption treatment. The invention has the advantages that: the low cost of a coagulation process and the high efficiency of an adsorption method are integrated, and the low-cost and high-efficiency fluorine removal is realized. In the coagulating sedimentation process, a proper amount of proper coagulant is selected according to the fluorine content in raw water, and the fluorine content in the water can be reduced, so that the regeneration frequency of the adsorbent is greatly reduced, the service life of the adsorbent is prolonged, the water treatment cost is reduced, and the invention has good application prospect for treating high-concentration fluorine-containing drinking water.

The invention relates to a water tank experiment device and an experiment method for simulating tgw paroxysmal flood deposition process. The water tank experiment device for simulating the paroxysmalflood deposition process comprises a deposition area mechanism, a control area mechanism and a data collection area mechanism, the deposition area mechanism comprises a water tank box, a water seepageand drainage system, a lighting system, a shooting system and a scanning system, the water tank box is provided with a transparent glass plate, a gridding plastic water seepage plate is installed atthe bottom of the water tank box and can be filled with chippings with different particle sizes, and meshes are formed in the four faces of each grid; a flood fluid inlet is formed in one corner of the water tank, the flood fluid inlet is connected with the tail end of a conveying channel of the control area mechanism, movable stainless steel side plates are installed on the two wings of the floodfluid inlet corner in the water tank, and the automatic gradient adjusting device adjusts the gradient of the water tank through a gradient adjusting supporting plate. According to the invention, multiple experimental processes are integrated, diversified and complex flood sedimentation processes can be simulated, and multiple types of flood processes can be simulated by deploying fluid properties.

The dosing system fuzzy controller of the invention can well improve the reliability and the stability of a dosing system, and saves water treatment cost to a great extent. The dosing system fuzzy controller comprises a fuzzy controller, a variable-frequency control system, a metering and dosing system, a coagulating sedimentation water treatment system, a flow sensor, a flow transmitter, an incoming water turbidity sensor, an incoming water turbidity transmitter, an outgoing water turbidity sensor, and an outgoing water turbidity transmitter. Incoming water flows in through the flow sensor, the incoming water turbidity sensor and the coagulating sedimentation water treatment system. The output end of the flow sensor is connected with the flow transmitter. The output end of the incoming water turbidity sensor is connected to the incoming water turbidity transmitter. The output ends of the flow transmitter and the incoming water turbidity transmitter are connected with the input end of the fuzzy controller. The fuzzy controller is connected with the variable-frequency control system. The variable-frequency control system is connected with the metering and dosing system. The metering and dosing system is connected with the coagulating sedimentation water treatment system. The output end of the coagulating sedimentation water treatment system is connected with the outgoing water turbidity sensor.

The invention relates to a method and device for treating sewage and producing biogas. The method comprises the following steps: mixing biological sludge discharged from a sewage microorganism treatment purification system of an aerobic treatment unit with raw sewage as a treated object, and carrying out adsorption and sedimentation; feeding the supernate obtained in adsorption and sedimentation process into the sewage microorganism treatment purification system for biological treatment of the sewage; feeding the sludge obtained after the adsorption and sedimentation process into a sludge anaerobic fermentation biogas production system for producing the sludge anaerobic fermentation biogas. The biological sludge discharged from the sewage microorganism treatment purification system is adsorbed, deposited and separated from the raw sewage, and granular organic pollutants in the raw sewage and a part of soluble pollutants are absorbed into the sludge for anaerobic fermentation to prepare the biogas, so that the yield and the speed in anaerobic biogas production are increased, the load of sewage purification is alleviated, the aeration amount and the residual sludge yield are reduced, the treatment efficiency is high, and the efficiency of recycling biomass is also high.

The invention belongs to the technical field of water treatment, and particularly relates to a dense medium coagulating sedimentation water treatment method, which comprises the following steps: a) mixing wastewater and a coagulant, and carrying out first stirring to obtain a first mixture; b) adding dense medium particles into the first mixture, and carrying out second stirring to obtain a secondmixture, wherein floc taking the dense medium particles as a core is formed in the second mixture; c) adding a flocculating agent into the second mixture, carrying out third stirring, and further growing the floc to obtain a third mixture; and d) aging the third mixture, continuously increasing the floc, precipitating the floc by adopting an inclined tube precipitation method or an inclined plateprecipitation method, collecting the precipitate, centrifuging, and separating sludge and the dense medium particles, wherein the dense medium particles are volcanic rock particles, and the energy density of the first stirring and the second stirring is greater than the energy density of the third stirring. According to the invention, volcanic rock particles with microporous structures are adopted, and flocculation sedimentation and adsorption are integrated.

The invention relates to an intelligent diagnosis system for the running state of a wastewater biochemical treatment system and an application method thereof. The diagnosis system comprises a dynamic information recorder and an intelligent image information processing system, the dynamic information recorder obtains images of the activated sludge sedimentation process in the transparent container at a plurality of preset time points respectively; the intelligent image information processing system carries out image recognition processing on the image photo to obtain activated sludge characteristic data information, and the activated sludge characteristic data information comprises sludge sedimentation characteristics, supernate characteristics, zoogloea characteristics, liquid level floating object characteristics and other data information; and based on the activated sludge characteristic data information, the intelligent diagnosis system generates a current biochemical treatment system operation state diagnosis report and a risk handling strategy. The diagnosis report can provide accurate identification and early warning for the current operation state of the biochemical system; and the risk disposal strategy can provide direction and thought for field operation and maintenance, so that long-term stable operation of the biochemical treatment system is ensured.

The invention discloses a sedimentation tank suitable for treating sewage with high suspended solids. The sedimentation tank comprises: a tank body provided with a water inlet, a water outlet and a sludge discharge port; a plurality of sludge hoppers distributed at the bottom of the tank body in an array manner; an inclined pipe arranged in the middle of the tank body; and a plurality of water inlet pipes respectively communicated with the water inlet, wherein each water inlet pipe corresponds to one sludge hopper, and the water outlets of the water inlet pipes are positioned below the inclined pipe. The sedimentation tank can effectively improve the treatment efficiency of sewage with high suspended solids (ss) and other indexes, avoid the disturbance of a supernatant to the sludge sedimentation process, increase the sludge settling speed, avoid secondary disturbance of sludge, easily clean the water inlet pipes from the top ends when the water inlet pipes are blocked, and improve thesludge discharge efficiency.

The invention discloses a precipitation water treatment method. The method involves a folded plate eddy current synergistic flocculation unit, an inclined pipe precipitation unit, a sludge backflow and discharge unit and a dredge pipe backwash unit, wherein the folded plate eddy current synergistic flocculation unit is composed of four folded plate eddy current reaction chambers, raw water enters an water inlet pipe, passes through a pipeline mixer, and orderly passes through the four folded plate eddy current reaction chambers via a pipe mixer, and then enters the inclined pipe precipitation unit after passing through a transition area; same-wave folded plates, opposite folded plates and eddy current reactors in different models are arranged in the four folded plate eddy current reaction chambers, and a sludge backflow, discharge and backwash device unit is arranged at the bottom of each of the four folded plate eddy current reaction chambers. By use of the method disclosed by the invention, the efficiency of the flocculation reaction is improved, the effects of improving the water purification amount and the water quality are obvious, and the clarifying efficiency and the precipitation effect are guaranteed at the same time, water sources and the coagulation reagent quantity are effectively saved, and the high social and beneficial benefit are realized.

A process for water treatment, including a combination of methods from the group comprising coagulation, sedimentation, flocculation and ballast flocculation, which is further improved by the addition of a simplified sludge recirculation system. The recirculation system corresponding to this process allows higher sludge density as well as less significant water volume losses by making the sludge accumulating at the bottom of the sedimentation zone go through a hydro cyclone a certain number of times in repeated cycles thus augmenting the solid particles density of the extracted sludge. The system may also be controlled by a suspended solid analyser, a flow meter and/or a timer. The present invention also includes a method of producing specific fluid flow control behaviour with this simplified sludge recirculation system, which furthermore improves the efficiency of the process.

The invention discloses a magnetic coagulation sedimentation treatment device for pharmaceutical wastewater. The magnetic coagulation sedimentation treatment device comprises a first quick mixing tank, a second quick mixing tank, a third quick mixing tank, a fourth flocculation tank, a clarification sedimentation tank and a magnetic powder recovery system which are connected in sequence, wherein air stirring devices are arranged in the first quick mixing tank, the second quick mixing tank and the third quick mixing tank; a mechanical stirring device is arranged in the fourth flocculation tank;a flocculation dosing pipe is connected with the first quick mixing tank; the magnetic powder passing through the magnetic powder recovery system is added into the second quick mixing tank; and a coagulant aid dosing pipe is connected with the third quick mixing tank. The invention also discloses a magnetic coagulating sedimentation treatment process for pharmaceutical wastewater. Air stirring isadopted in the mixing section of the magnetic coagulation sedimentation process, so that an ideal mixing flocculation effect is achieved, the sewage treatment difficulty of a subsequent treatment process is further reduced, the risk of abrasion of stirring equipment in the prior art is avoided, and the energy consumption of the system is reduced.

The invention relates to the technical field of a sand-water separation apparatus, and particularly relates to a mud-sand separation cyclic utilization apparatus. The mud-sand separation cyclic utilization apparatus comprises a vortex sand washer, a mud-sand separator and a mud-sand settling pond, wherein a first liquid inlet pipe communicated with interior of the vortex sand washer is fixed on the lower part of the vortex sand washer, the first liquid inlet pipe is tangential to the inner wall of the vortex sand washer, and a second liquid inlet pipe is fixed between the vortex sand washer and the mud-sand separator. The mud-sand separation cyclic utilization apparatus is reasonable and compact in structure and convenient to use; the vortex sand washer, the mud-sand separator and the mud-sand settling pond are combined, so that micro sand in the sand-containing sludge can be effectively separated, the mud-sand separation efficiency can be improved, and the recovery rate of the micro sand can be increased; moreover, the recovered micro sand is prevented from being polluted by floating oil, so that the micro sand can be reutilized, the recycling of resource can be realized, and the processing cost of oil field extraction water coagulating sedimentation process can be reduced.

The invention relates to the technical field of environmental protection treatment. The invention relates to an environment-friendly sludge water and soil separating and recycling system comprising aseparation tank, a feeding hole is formed in the upper end of the left side of the separation tank; a sludge outlet is formed in the lower end of the separation tank; the right side of the separationtank is connected with a drain pipe; a crushing kettle is connected with the lower end of the sludge outlet; and the drain pipe is connected with a flocculation basin. The beneficial effects are that:a stand column is arranged in the separation tank of a sedimentation device, so that primary filtration is carried out in the sedimentation process, the sedimentation efficiency is improved, meanwhile, mud-water separation is conveniently realized, and the subsequent treatment quality is favorably improved; by arranging an extruding and filtering device, crushed muddy soil is recompressed into blocks, recycling of soil is facilitated, harmful substances in the soil are reduced in cooperation with high-temperature baking, and secondary pollution of soil to the environment is avoided.

A treatment for a large body of water to make the water suitable for recreational purposes is disclosed. A sedimentation zone and a dissipation zone are designated in the water body. A disinfection method based on a CT index and a flocculant composition are utilized in the sedimentation zone to aid in the settling of different microorganisms and/or contaminants. Also, the water in the sedimentation zone is minimally disturbed to facilitate the sedimentation process. A permanent chlorine residual is maintained in the dissipation zone by adding an efficient amount of a chlorine disinfectant such that at least a 0.5 mg/L free chlorine level is maintained in the water volume. Water is injected into the dissipation zone by means of one or more inlet nozzles. Along with natural currents produced by winds and water temperature differences, a water dissipation pattern from within the dissipation zone into the sedimentation zone is generated.

The invention belongs to the technical field of water treatment, and provides a dense medium coagulating sedimentation water treatment method, which comprises the following steps: a) mixing wastewaterand a coagulant, and carrying out first stirring to obtain a first mixture; b) adding dense medium particles into the first mixture, and carrying out second stirring to obtain a second mixture, wherein floc taking the dense medium particles as a core is formed in the second mixture; c) adding a flocculating agent into the second mixture, carrying out third stirring, and further growing the floc to obtain a third mixture; and d) aging the third mixture, continuously increasing the floc, precipitating the floc by adopting an inclined tube precipitation method or an inclined plate precipitationmethod, collecting the precipitate, centrifuging, and separating sludge and the dense medium particles, wherein the dense medium particles are calcium carbonate, and the energy density of the first stirring and the second stirring is greater than the energy density of the third stirring. According to the invention, calcium carbonate is adopted, so that the alkalinity of to-be-treated wastewater can be prevented from being too low, and flocculating settling and alkalinity supplementing are integrated.

The invention relates to the technical field of sewage pretreatment, and discloses a sewage pretreatment device and a pretreatment method, which have the following effects: 1, a flocculation process and a sedimentation process are combined and are simultaneously carried out in a sedimentation tank, so that the working efficiency of the whole system is improved; 2, two sewage inlets are arranged, different positions for flocculation and sedimentation are provided through the height difference, meanwhile, the movement amount of particulate matter in the vertical direction is blocked through a baffle, time is provided for flocculation and sedimentation layering, and the situation that sediment is excessively bonded, and the damping amount is too large due to the fact that flocculation and sedimentation are carried out at the same time is avoided; 3, a rotational flow opposite to the sedimentation is generated on the spiral feeder, so that the influence of the rotational flow generated by stirring of the spiral feeder in the flocculation process is reduced, and the flocculation effect is improved.

The invention provides a multi-functional electrochemical coupling ecological floating bed, and belongs to the field of water pollution control. In the invention, multiple principles in physics, biology, electrochemistry and other subjects are applied to design the multi-functional electrochemical coupling ecological floating bed for eliminating black and odorous water. A combined process flow is formed by coupling iron-carbon micro-electrolysis, bionic oxygenation, activated carbon adsorption, sulfur autotrophic denitrification and inclined tube precipitation process units, and odor substances in the water can be effectively removed. Moreover, as water discharged by the floating bed is falling water, the dissolved oxygen concentration of river water is increased, the subsequent self-cleaning capacity of the river is improved, and meanwhile, a small waterfall landscape is formed.

The invention relates to the technical field of industrial wastewater treatment, and in particular, relates to a coking wastewater reduction treatment method. After coking wastewater is treated by a regulating tank, an air flotation oil removal process, a coagulating sedimentation process, a biochemical homogenizing tank, a biological filter tank, a secondary sedimentation tank, a UV advanced ozone oxidation process, an ultrafiltration process, a reverse osmosis process, a chemical softening tank, a sand filtration process, a resin process, a regulating tank, an ultrafiltration process, a nanofiltration process and a bipolar membrane electrodialysis process, generated acid and alkali can be used for recycling in the processes of pH regulation and the like in the treatment process; and the resource utilization of the coking wastewater is realized, the outsourcing cost of reagents is reduced, the energy consumption in the technological process is low, the cost is low, the equipment is simple, the operation is easy, the treatment effect is stable, and the treatment effect is enhanced by a water treatment agent selected in the treatment process.