33results about How to "Improve wastewater treatment efficiency" patented technology

The invention discloses a technology of treating high-concentration organic wastewater with wet type catalytic oxidation. The technology comprises the following steps that the technology adopts COD concentration online detection and is automatically correlated to an oxygen concentration regulation device, organic wastewater with the COD content being 10000-50000 mg / L and the liquid space velocityof the wastewater being 0.5-2.5 h<-1> is mixed with enriched oxygen, the device automatically regulates the oxygen volume concentration to be 25-99 percent, water which is sent into a wastewater reactor charged with a catalyst for treatment is directly discharged or sent to a next treatment work section, and tail gas containing nitrogen, oxygen, carbon dioxide and water vapor is directly exhaustedto atmosphere, wherein the space velocity of the enriched oxygen is 34-39 times the liquid space velocity of the wastewater, and the oxygen supply quantity is 1.1-1.2 times the theoretical oxygen demand. The technology disclosed by the invention has the advantages that high-concentration COD in acid or alkaline organic wastewater can be effectively removed.

An automated waste water treatment system includes a collection tank constructed to hold waste water, a first flow line connected to the collection tank to output the waste water from the collection tank, an electrocoagulation unit that receives the waste water and outputs the waste water as coagulated waste water to a flow line, a polymer dosage tank to provide a polymer dosage into the flow line where the polymer dosage mixes with the coagulated waste water to produce and output flocculated waste water. A clarifier connected to the flow line receives the flocculated waste water and produces sludge-free waste water and concentrated sludge, a series of filters to output filter-treated water, and an ultrafiltration system that receives filter-treated water and outputs ultrafiltration-treated water to a reverse osmosis system.

The invention discloses a process for treating chemical fluorine-containing wastewater by combining micro-electrolysis, Fenton and lime coagulation. The process comprises an iron-carbon-Fenton combined experiment and a lime defluorination coagulation experiment, wherein the iron-carbon-Fenton combined experiment comprises an iron-carbon micro-electrolysis experiment and a Fenton oxidation experiment carried out on the basis of iron-carbon micro-electrolysis; the influence of different pH values, reaction time, aeration rate and filler dosage on the CODcr removal effect is studied by the iron-carbon micro-electrolysis experiment, and the CODcr removal effect is studied by different H2O2 dosage, pH and reaction time by the Fenton oxidation experiment; the lime defluorination coagulation experiment comprises the steps: performing lime method defluorination on water subjected to iron-carbon micro-electrolysis defluorination, wherein the F<-> removal effect is achieved by different additionamounts and reaction time; because the lime method defluorination precipitation is fine and the precipitation speed is slow, the influence of different pH values, PAC addition amounts and PAM addition amounts on the removal effect needs to be studied in cooperation with coagulation reaction defluorination and coagulation experiment parts. Under the optimal process conditions, the comprehensive removal rate of COD can reach 88.7%, and the comprehensive removal rate of F<-> can reach 99%.

The invention relates to a technological method for processing natural material sandstone processing system waste water. The method comprises steps that: (1) waste water of natural material sandstone processing systems is gathered, and is delivered into a collected water distributing well by using a trench pipe; the waste water is delivered into a waste water sedimentation tank by the collected water distributing well, and is subject to natural sedimentation; (2) suspended matters in the waste water processed through natural sedimentation in the previous step are settled to the bottom of the waste water sedimentation tank, and a supernatant which reaches a discharging standard is discharged into river water through a water discharging ditch communicating with the waste water sedimentation tank. According to the technological method for processing the natural material sandstone processing system waste water, the waste water sedimentation tank is adopted as a waste slag storing site, such that a mechanical dredging equipment structure of the sedimentation tank is saved; the waste water is continuously processed, and no drying time is required, such that the utilization rate of a unit tank is high; the waste water reaching a discharging standard after processing is not recovered and reused, such that the construction investment of facilities such as a recovering technological pipe and a sedimentation tank is saved. Therefore, the waste water processing efficiency is improved, the cost is reduced, the operation is convenient, and the method is economic and reliable.

The invention relates to the technical field of wastewater treatment, in particular to a method for extracting and refining a potassium salt from mica acid production wastewater. The method for extracting and refining the potassium salt from the mica acid production wastewater comprises the following steps: firstly, concentrating the mica acid production wastewater, and adjusting the heat value and the pH value of the mica acid production wastewater; controlling the temperature of a high-temperature liquid incinerator to be 600-1200 DEG C, spraying the pretreated wastewater into the high-temperature liquid incinerator for high-temperature decomposition, performing high-temperature denitration on generated gas, performing desulfurization, performing absorption, performing water washing treatment, performing emptying, and recycling incineration residues at the bottom of the incinerator; and finally, adding water into the incineration residues for dissolving, performing filtering, performing concentrating, and performing crystallizing to obtain the potassium salt. According to the method provided by the invention, the potassium salt in the wastewater is extracted in the wastewater treatment process, the equipment investment costs of the whole process are low, the wastewater treatment costs are low, the recovery rate of the potassium salt is high, and the purity of the recovered potassium salt is high.

The invention belongs to the technical field of sewage treatment, and solves the technical problem that the existing biochemical reaction equipment is low in wastewater treatment efficiency. The biochemical reaction equipment with a function of increasing oxygen concentration is characterized by comprising a pressure reaction tank, a water inlet slot, a water inlet pump, an air compressor and a controller. The biochemical reaction equipment has the beneficial effect of being high in wastewater treatment efficiency.

The invention provides a plug flow type reactor for petrochemical wastewater treatment, and belongs to the technical field of sewage treatment. The plug flow type reactor for petrochemical wastewater treatment comprises a bottom plate, a plug flow pipeline and a precipitation tank, wherein the upper surface of the bottom plate is fixedly connected with a box body, and a reaction box is arranged on one side of the inner bottom wall of the box body; an inner shell is fixedly connected to the inner wall of the reaction box, supporting rods are fixedly connected to the two sides of the inner wall of the inner shell, and a plug flow pipeline is fixedly connected to one end of each supporting rod. According to the plug-flow reactor for petrochemical wastewater treatment, by arranging a water pump, a plug-flow pipeline, an electric heating column, a material pipe, heat dissipation holes, heat dissipation fiber cotton and a heat control plate; when the reactor is used, petrochemical wastewater can be continuously and stably pumped through the water pump, so that the operation stability of the reactor is higher; the petrochemical wastewater can be spirally propelled after entering the plug-flow pipeline, then the corresponding raw materials can be added in sections through the plurality of material pipes, so that the petrochemical wastewater can be quickly and effectively purified, and the wastewater treatment efficiency is effectively improved.

The invention discloses a coking wastewater treatment method with lignite and semi-coke used as a novel adsorbent, and belongs to the technical field of treatment of coking wastewater. The coking wastewater treatment method with the lignite and the semi-coke used as the novel adsorbent comprises the following steps of (1) crushing the semi-coke and the lignite, and then conducting screening to obtain semi-coke powder and lignite powder with preserved particle size; (2) mixing the semi-coke powder and the lignite powder according to a set ratio for granulation so as to obtain semi-coke-lignite mixed spherical particles; (3) conducting activation and drying treatment on the semi-coke-lignite mixed spherical particles to produce a mixed adsorbent; (4) conducting adsorption operation on coking wastewater by means of the mixed adsorbent; and (5) taking out the humid mixed adsorbent with saturated adsorption, conducting drying to obtain mixed powder, and using the obtained mixed powder as a coking raw material or a sintering process fuel or a blast furnace injection fuel to achieve secondary utilization of the adsorbent. The method is suitable for large-scale treatment of coking wastewater, has a good adsorption effect and is low in cost, secondary utilization of the semi-coke and lignite mixed powder adsorbent is achieved, and the treatment cost of the coking wastewater is greatly reduced.

The invention provides a high-chlorine high-ammonia-nitrogen wastewater treatment device with a three-dimensional electrode, which comprises an electrolytic tank, an anode electrode and a cathode electrode; the anode electrode comprises a plurality of anode plates arranged in parallel, the cathode electrode comprises a plurality of cathode plates arranged in parallel, the anode plates are insertedinto the cathode plates and arranged in a staggered manner, and the cathode plates are arranged in a staggered manner. Activated carbon and insulating particles are filled between the anode plate andthe cathode plate according to the volume ratio of 1: 1 to serve as a bipolar third electrode, openings between the anode plate and the cathode plate are sealed through insulating separation nets, and an ultrasonic rod is arranged in the electrolytic tank. The bipolar third electrode can adsorb organic matters, and is not influenced by the adsorption saturation amount in an adsorption and degradation circulation mode; in addition, the effective reaction surface area of the electrolytic cell in unit volume is increased, the mass transfer effect is enhanced, and the wastewater treatment efficiency is improved, so that the generation of short-circuit current is reduced, and the current efficiency is improved. Besides, by arranging an ultrasonic rod, the utilization rate of active groups generated by electrolysis is increased through the ultrasonic effect, and the wastewater treatment efficiency is improved.

The invention provides wastewater treatment equipment, which relates to the technical field of wastewater treatment and comprises a cavity, a water distributor, a flow equalizing plate, an MW-LEP processor and a water tank, wherein the water distributor and the MW-LEP processor are arranged at an interval; the flow equalizing plate is arranged at the bottom of the water distributor; the water tank comprises a first water tank and a second water tank; the first water tank is arranged at the bottom of the cavity; the second water tank is arranged at the top of the water distributor. The wastewater subjected to flow equalization by the water distributor is treated on the basis of the MW-LEP treater, the equipment structure is simple, organic matters in the wastewater are effectively removed by the microwave electrodeless ultraviolet lamp in the MW-LEP treater, and the wastewater treatment efficiency is high.

The invention discloses a novel building construction wastewater treatment device which comprises a vertical barrel, a wastewater injection pipe is fixedly mounted on one side of the top of the side wall of the vertical barrel, a water outlet pipe is fixedly mounted on the other side of the top of the side wall of the vertical barrel, a preliminary filtering mechanism is mounted at the joint of the wastewater injection pipe and the vertical barrel, and a precipitation filtering mechanism is mounted at the bottom of the vertical barrel. An adsorption filtering mechanism is mounted in the vertical barrel, the wastewater injection pipe is communicated with a preliminary filtering mechanism, the preliminary filtering mechanism is communicated with a precipitation filtering mechanism, and the precipitation filtering mechanism is communicated with the adsorption filtering mechanism. Large-particle materials, silt fine materials and organic matter are separated from building construction wastewater in a layered mode, the situation that pipeline blockage is caused by the large-particle materials such as gravel materials, and consequently wastewater treatment cannot be conducted or wastewater treatment equipment is damaged is avoided, the wastewater treatment efficiency is effectively improved, the purification quality is improved, and meanwhile, the treatment cost is reduced. Large-particle materials and silt are respectively screened out and are recycled as building materials, so that resources are effectively saved, and the building construction cost is reduced.