48results about How to "Full flocculation" patented technology

The invention relates to a small high-efficiency mud-water separation device used for supplying water to villages and small towns. The device comprises a mechanical flocculation area and a hydraulic flocculation area, a sedimentation area, an active mud residue concentration area, an active mud residue internal reflux tube/cylinder, an impeller lifting device, a water inlet and outlet system, a mud discharge system and the like. The main body of the device mainly comprises three layers of concentric cylinders; an inner cylinder is the mechanical flocculation area, the middle is provided with the impeller lifting device, and active mud residue at the bottom of a concentration chamber is lifted to the mechanical flocculation area by the internal reflux tube/cylinder arranged in the center of the bottom; the hydraulic flocculation area is formed between the inner cylinder and a middle cylinder, and is provided with a pore plate; the sedimentation area is formed between the middle cylinder and an outer cylinder, and is provided with a single-blade single-curve rotary sloping plate; and the bottom of the equipment is provided with a mud residue concentration chamber. The device has theadvantages of compact structure, high space utilization rate, small occupied area, mechanical flocculation area, easily controlled reflux quantity, low energy consumption, good effluent quality and the like, and has great promotion value.

The invention creatively relates to a sewage treatment system and a sewage treatment method. According to the adopted technical scheme, the sewage treatment system is composed of a flocculation tank and a sedimentation tank. According to the flocculation tank, a sewage inlet and a reaction water outlet are formed in a tank body I, and three baffle plates I are arranged in the tank body I to sequentially divide the interior of the tank body I into a cavity I, a cavity II, a cavity III and a cavity IV. According to the sedimentation tank, a reaction water inlet is formed in a tank body II, and three baffle plates II are arranged in the tank body II to divide the interior of the tank body II into a baffling area and a sedimentation area; a polyacrylamide inlet is formed in the baffling area, a sludge hopper is arranged at the lower end of the sedimentation area, a sludge discharging pipe is arranged at the lower end of the sludge hopper, a water distribution plate with a great number of water distribution holes is mounted at the upper end of the sludge hopper, a plurality of inclined plates are mounted on the water distribution plate, and a water drainage outlet is formed in the tank body II. According to the sewage treatment system and the sewage treatment method, the principle of sedimentation and air floatation is adopted, the efficiency of solid-liquid separation is improved to the greatest extent, and the final quality of drained water which is treated is guaranteed.

The invention relates to a treatment system used for printing and dyeing sewage physic-chemical treatment. The sewage treatment system comprises technological process equipment, a sampling detection device and a control cabinet, a water inlet segment is connected with a water outlet pipeline through a waste water pump, and the sampling detection device is connected with printing and dyeing sewage in the water outlet pipeline through a sampling tap; the outlet end of a sampling water inlet pipe is connected with a detection box which comprises a box body, a sludge-water separator and a transmittance detector used for detecting the transmittance of the printing and dyeing sewage, and both the mud-water separator and the transmittance detector are arranged in the box body. By the aid of high-pressure gasification sewage mixture, flocculent precipitate and air flotation froth are respectively separated through the sludge-water separator to obtain detection water, the detection water is then detected through transmittance, transmittance detection is quite stable and accurate, scale and dirty formation is avoided, stability and accuracy in control of the sewage are improved, and good control effect is achieved.

The invention provides a micro-dynamic in-situ collection and separation integrated device for surface water algae and nutritive salt. The device comprises a solar cell panel and a floating platform connected with the solar cell panel, wherein a surface algae-laden water collection unit, an algae-laden water flocculation reaction unit, a standby flocculant feeding unit, an algae-laden water flowing control unit, an alga and nutritive salt separation unit, a clean algae-laden water discharging unit and a floating platform power driving unit are carried on the floating platform. According to the device, high-density surface algae-laden water does not need to be pumped to a shore for treatment, addition of a flocculant chemical and microbial carriers for removal of nitrogen and phosphorus are not required, mechanical concentration of the algae-laden water is not required, the removal effect of algae and nutritive salt such as nitrogen, phosphorus and the like is good, little power is consumed, the operation cost is low, maintenance is simple and no chemical pollution or solid waste is produced.

The invention relates to a treatment device for the physical and chemical treatment of printing and dyeing wastewater. The treatment device for treating the printing and dyeing wastewater comprises a water feeding pipe segment, a decolorizer adding device, a coagulant aid adding agent, a sewage pump, a water conveying pipeline, a sampling detection device for detecting a wastewater treatment index, control boxes and a sedimentation basin, wherein the water feeding pipe segment is connected with the water conveying pipeline through the sewage pump; the tail end of the water conveying pipeline is connected with the sedimentation basin; the front part of the water conveying pipeline is connected with a reaction pipe; the water conveying pipeline at the rear side of the reaction pipe is provided with a sampling opening; the sampling detection device is connected with the printing and dyeing wastewater in the water conveying pipeline through the sampling opening; the sampling detection device is used for acquiring signals through an optical sensing element and inputting the signals into the control boxes; the control boxes are in signal connection and are used for controlling the adding amount of a decolorizer in the decolorizer adding device. According to the treatment device, the sampling detection is adopted and amplified to the whole system, so that the control system is controlled well; the whole process ensures that the printing and dyeing wastewater is stably and fully flocculated.

The invention relates to a treatment control system for physicochemical treatment of printing and dyeing sewage. The sewage treatment control system comprises a water inlet pipe section, a decolorizer adding device, a coagulant aid adding device, a sewage pump, a water supply pipeline, a sampling detection device for detecting sewage treatment indexes, a control box and a sedimentation tank, wherein the sampling detection device comprises a sampling water inlet pipe, a buffer filter for removing impurities in the printing and dyeing sewage and a detecting box for detecting the light transmittance of the printing and dyeing sewage; the detecting box comprises a box body, as well as a sedimentation device and a light transmittance detector which are connected with the sampling water inlet pipe in sequence, and the light transmittance detector is used for detecting the light transmittance of a supernate of the printing and dyeing sewage; the sedimentation device and the light transmittance detector are both arranged in the box body; the light transmittance detector comprises a casing, a light source, a light-sensitive receiver, and a multi-way flowing passage for a water sample to flow. The sampling detection is adopted and amplified to the whole system, so that not only can the system be better controlled, but also flocculation of the printing and dyeing sewage can be stable and full in the whole technological process.

The invention discloses an industrial sewage treatment device, in particular to a uniquely-developed compact, high-efficient and movable sewage treatment device by using a hydrocyclone aeration decontaminatorHAD (Hydrocyclone Aeration Decontaminator). The device comprises connecting water pipes, and comprises a sewage equalization pond, an administration mixing device, a U-shaped flocculation size mixing tube, the hydrocyclone aeration decontaminator and a static scalping tank which are orderly connected in series according to the water flow direction through the connecting water pipes. The device can be applied to the treatment of industrial sewage, in particular to the treatment of sewage for medium-small industries. Moreover, the invention also discloses a method for treating the industrial sewage.

The invention provides a pretreatment technology of electrodialysis alkali recovery during viscose fiber production. The pretreatment technology is characterized by comprising the steps that pressed liquor with the content of NaOH of 50-200g/L is subjected to large-particle substance removal by an electric flocculation method, and then enters a microporous filter by a pump; a filtrate is pumped in a membrane module and conveyed to a diffusion dialysis membrane stack; and dilute alkali liquor is obtained and used for subsequent electrodialysis treatment. According to the characteristic that high-concentration waste alkali containing hemicellulose is generated during a viscose fiber pressing course, the waste alkali is pretreated to allow an index of waste alkali liquor to be suitable for a subsequent electrodialysis alkali recovery technology, so that the viscidity of the waste liquor is reduced; energy consumption is reduced effectively; and the penetration efficiency and the operation stability are improved.

The invention discloses a wool scouring wastewater treatment method. The method comprises the following steps: wool fat recycle and treatment; pH adjustment treatment, air flotation treatment, anaerobic biochemical treatment, aerobiotic biochemical treatment, hydrolysis acidification pool treatment, and entering of discharged water to a three-stage A/O (anoxic/oxic) pool; sludge treatment; discharging of sludge in a one-stage air flotation pool, a two-stage air flotation pool, the hydrolysis acidification pool and the A/O pool into a sludge concentration pool to perform concentration, flowingback of the liquid supernatant of the sludge concentration pool to an adjustment pool, dehydration of the sludge after concentration, and outward transport of mud cakes for disposition. The method provided by the invention can be used for effectively removing high-concentration organic matter in wool scouring wastewater.

The invention discloses a seaweed liquid urea synergist flocculation device, which is provided with a seaweed synergist fermentation liquid inlet pipe, a shower head, a tank body, a flocculation agent inlet pipe, a flocculation agent branch pipe, an emptying pipe and a discharging pipe, wherein the seaweed synergist fermentation liquid inlet pipe is welded in a hole formed in the top center of the tank body; the lower end of the seaweed synergist fermentation liquid inlet pipe is connected with the shower head; the discharging pipe is welded in a hole formed in the bottom center of the tank body; the flocculation agent inlet pipe is welded in a hole formed in the right side of the middle part of the tank body; the flocculation agent inlet pipe passes through the outer wall of the tank body to be connected with the flocculation agent branch pipe; the emptying pipe is welded in a hole formed in the right side of the top of the tank body; the flocculation agent branch pipe is of a structure formed by four vertically arranged stainless steel pipes with uniformly distributed spray heads. Seaweed liquid urea synergist fermentation liquid is sprayed out from the shower head to form a fine mist shape to form a downward flow to realize countercurrent contact with the upward fine-mist-shaped fermentation agent sprayed out from the flocculation agent branch pipe; the mixing is sufficient; the flocculation speed is accelerated; the flocculation effect is improved; the power consumption is reduced; the goals of full fermentation liquid flocculation and low energy consumption are realized.

The invention relates to a preprocessing method for black liquor in diffusion dialysis recycling pulp manufacture, and belongs to the technical field of pulp manufacture. The preprocessing method comprises the following steps: adding flocculant into the black liquor, which contains sodium hydroxide with the concentration of 8-30 g/L, for flocculation, and keeping the concentration of the flocculant at 5-10 mg/L; filtering through a sheet frame filter with the bore diameter of 1,100-1,300 g/m<2>; then filtering through a millipore filtration membrane with the bore diameter of 0.1-1 micrometer to reduce the concentration of large particle impurity; recycling lignin to obtain the preprocessing liquid used for diffusion dialysis treating for a cation exchange membrane. Through adopting specific preprocessing method to process the black liquor before entering the diffusion dialysis process, the preprocessing method can increase the recovery rate of alkali and hemicelluloses in the black liquor, reduce damage to the diffusion dialysis membrane system caused by the alkali liquid, prevent blockage of the diffusion dialysis membrane, prolong the service life of the membrane, and guarantee the smooth progress of diffusion dialysis and follow-up handling.

The invention provides a liquefaction device for preparing starch sugar. The liquefaction device for preparing starch sugar comprises a liquefaction column, a material inlet tube connected with a material inlet of the liquefaction column, and a discharge tube connected with a discharge opening of the liquefaction column, wherein the material inlet is formed in the lower part of the liquefaction column, a material outlet is formed in the top of the liquefaction column, and the discharge opening is formed in the bottom of the liquefaction column. The bottom of the liquefaction device provided by the invention is of a conical structure, the direction of the material inlet tube is the direction of a tangent line of the material inlet, and starch liquefaction solution enters the liquefaction device and is uniformly and rotatably fed, thus proteins in starch are adequately flocculated and removed. The invention further provides a liquefaction method for preparing starch sugar. According to the liquefaction method provided by the invention, a hydrolysis temperature is increased and hydrolysis time is shortened; meanwhile, the liquefaction device is used for liquefaction to achieve the purpose of adequately flocculating proteins, thus proteins can be removed better in the filter procedure and further the quality of the starch sugar product is improved.

The invention relates to a preprocessing technology for black liquor in diffusion dialysis recycling pulp manufacture, and belongs to the technical field of pulp manufacture. The preprocessing method comprises the following steps: adding flocculant into the black liquor, which contains sodium hydroxide with the concentration of 8-30 g/L, for flocculation, and keeping the concentration of the flocculant at 5-10 mg/L; filtering through a sheet frame filter with the bore diameter of 1,100-1,300 g/m<2>; then filtering through an ultrafiltration membrane with the bore diameter of 20-1,000 angstroms to reduce the concentration of large particle impurity; recycling lignin to obtain the preprocessing liquid used for diffusion dialysis treating for a cation exchange membrane. Through adopting specific preprocessing method to process the black liquor before entering the diffusion dialysis process, the preprocessing method can increase the recovery rate of alkali and hemicelluloses in the black liquor, reduce damage to the diffusion dialysis membrane system caused by the alkali liquid, prevent blockage of the diffusion dialysis membrane, prolong the service life of the membrane, and guarantee the smooth progress of diffusion dialysis and follow-up handling.

The invention provides a chemical phosphorus removal automatic control device and a control method implemented by the same. The chemical phosphorus removal automatic control device comprises a tank, achemical dosing system, a stirring system, a chemical feeding system, a chemical and water mixing system, a water pipe winding system and a control system. The chemical dosing system, the stirring system, the chemical feeding system, the chemical and water mixing system and the water pipe winding system comprise chemical dosing tanks, stirring barrels, chemical feeding tanks, mixers and hoses which are sequentially connected with one another, and devices can be operated under the intelligent control of the control system. The control method implemented by the chemical phosphorus removal automatic control device includes filling the chemical dosing tanks with chemicals; feeding the chemicals and water into the stirring barrels according to preset chemical additive volumes and stirring thechemicals and the water; feeding chemical solution into the chemical dosing tanks; operating the devices, allowing sewage to flow through the mixers, feeding the chemical solution into the mixers according to preset chemical solution additive volumes and carrying out reaction; precipitating discharged water and separating flocculate from the water. The chemical phosphorus removal automatic controldevice and the control method have the advantages that accessories of the chemical phosphorus removal automatic control device are concentrated, the chemical phosphorus removal automatic control device is small in occupied area, the chemicals can be added under the automatic control, the additive volumes are stable, and the cost can be reduced.