47 results about "Surface water treatment" patented technology

The invention relates to a multi-effect pollution removal purifying agent and a method for applying the same. The purifying agent is complexly formed by a strong oxidant, an effective adsorbent and an assistant medicament by a weight percentage of strong oxidant 10-80%, effective adsorbent 10-70% and assistant medicament 5-50%. The surface water treatment process of using multi-effect pollution removal purifying agent of the invention comparing with the common flocculants has the following advantages: effectively improving the turbidity removal ratio, increasing the flcos formation amount and alum blossom density for the difficult coagulated surface water, improving the deposition efficiency, oxidizing and removing the organic matters in the water, eliminating the chroma and odor caused by the pollution, increasing the effluent conventional indexes, obviously improving the indexes such as oxygen consumption and ammonia nitrogen, wherein the removal rate of oxygen consumption and ammonia nitrogen can reach 25-60%, the removal rate of small organic molecules, benzenes and phenols can reach more than 80%, playing an obvious roll for the algae inactivation of lake water and reservoir water which are serious eutrophic, improving the algae removal efficiency of the deposition and filtration technologies with an algae removal rate of 80-90%, improving the coagulation efficiency, reducing 20-30% of the common flocculant dosage, effectively adsorbing the codeposition heavy-metal ion. The adding equipment of the invention is easy and convenient to use with little investment and fast effect.

The invention relates to a micro-polluted surface water treatment method based on a bio-membrane reactor. A ceramic carrier water pump is employed for driving a baffle-plate internal-circulating bio-membrane reactor to performing denitrification, dephosphorization and/or organic substance removal to micro-polluted surface water. A separation plate is arranged in the bio-membrane reactor to separate the interior of the reactor into an oxygen dissolving zone at the upper part and a bio-degradation zone at the lower part, wherein the oxygen dissolving zone is communicated with one end of the bio-degradation zone while the other end of the bio-degradation zone is communicated with a circulation pipe through a circulation pump, so that waste water to be treated flows through the oxygen dissolving zone and the bio-degradation zone continuously. A plurality of flow guide boards are vertically arranged in the bio-degradation zone at interval and are arranged in a high-low interlaced manner, thereby forming a channel in which solution can flow in a vertical baffled manner in the reactor. The flow guide boards are used as a carrier of a bio-membrane. Compared with a reactor in the prior art, by means of the reactor, ammonia nitrogen and total nitrogen in polluted river water are removed well and a certain removal effect on total phosphorus and organic substances in water is achieved too.

The invention discloses a method for synchronously removing high-concentration ammonia nitrogen, iron and manganese in water through efficient catalytic oxidation. The method adopts a system consisting of a catalytic oxidation filtration system, a reverse flow oxygenation system and a back washing system, the trace oxygenation is implemented at the medium-lower part of catalytic oxidation filtering layers to guarantee that each filtering layer contains sufficient dissolved oxygen, and the catalytic oxidation capabilities of all the filtering layers are given into full play, so that the high-concentration ammonia nitrogen, iron and manganese in water are synchronously removed through catalytic oxidation; and besides, the bottom filtering layer gives full play of the function of guaranteeing filtering. The method has the advantages that the removal efficiency is high, the impact-resistant load is high, the project investment is less, the running cost is low, and the implementation difficulty is small. The method is suitable for the new construction and upgrading transformation of both surface water treatment plants and underground water treatment plants.

The invention provides a preparation method of a composite nanofiltration membrane, wherein the method specifically includes the following steps: preparation of a polyvinyl alcohol solution; preparation of a cross-linking agent solution; and preparation of the composite nanofiltration membrane. The preparation method allows polyvinyl alcohol and glutaraldehyde to be crosslinked on a polysulfone-based membrane, the hydrophilicity of the membrane surface is improved, and the membrane is especially suitable for treatment of surface water, recycling of reclaimed water and preparation of high-quality drinking water.

The invention discloses a system for synergically removing Fe, Mn and ammonia nitrogen in composite micropolluted source water. For surface water treatment, the system is composed of a mix reaction precipitation system, a chemical assisted oxidation system, an air oxidation system, a filter system and a disinfection system; and for ground water treatment, the system is composed of all the components in the surface water treatment system except the mix reaction precipitation system. The system reasonably and effectively integrates many techniques, such as mass transfer oxygen charging, natural oxidation, chemical oxidation, trapping filtration, physicochemical adsorption, contact catalysis/biological oxidation and the like, and can effectively and synergically remove turbidity, chroma, Fe, Mn and ammonia nitrogen in composite micropolluted source water. The system has the technical advantages of high removal efficiency, high treatment speed, small influence by environmental factors, no side effect, simple operational management and the like, and the economic advantages of low engineering investment and low operating cost; and the system is suitable for design of new water plants, and is easy for implementing upgrading modification of the existing water plants.

The invention discloses a treating system and a method for treating surface water worse than Grade V into drinking water, belonging to the feedwater treatment field. The system comprises an aerating biological filter tank, a high-speed clarifying tank, a blower system, an ultrafilter, a medicating system and a contact disinfecting tank, wherein water and air are distributed to the bottom of the aerating biological filter tank, and organic pollutants, SS and inorganic substances such as ammonia nitrogen, nitrates, nitrites, iron, manganese and the like are preliminarily removed from the water; the outlet water from the filter tank flows into the high-speed clarifying tank, and coagulant and coagulant aids are added to remove suspended substances, chroma, phosphorus and part of organic substances; the outlet water from the clarifying tank flows into the ultrafilter unit, and suspended substances, colloids and bacteria can be effectively removed by using an immersed hollow fiber membrane assembly; and the outlet water from the ultrafilter flows into the contact disinfecting tank, ozone is introduced for disinfection, and the outlet water from the contact disinfecting tank flows into a water supply network. The system can treat the surface water worse than Grade V into the drinking water at present, and is of far reaching importance under the condition that surface water of Grade I, II and III as untreated water of tap water is decreased day by day in China.

The invention discloses a surface water treatment robot with a function of automatically detecting the water quality. The surface water treatment robot comprises an inflatable floating frame, a remote-control unit, a robot hull and a hull propelling device. A water quality detecting probe, a sewage disposal device and an aeration oxygen-increasing device are arranged at the bottom of the robot hull. A solar cell panel and a wind-driven generator are arranged at the top of the robot hull. A GPS module, a signal transmitting module, a data analysis module, a remote control receiving module, a programmable module and a control module are arranged in the robot hull. An accumulator is arranged in the robot hull. The surface water treatment robot has the advantages that the surface water treatment robot can go deep into unmeasurable areas such as a deep water area, the problem that fixed detection equipment cannot detect the water quality of surface water any time and any where is solved, operation is easy and convenient, and by arranging the water quality detecting probe and the data analysis module, the energy saving and environmental protection effects are achieved, sewage can be automatically disposed, and the water quality is purified.

The invention relates to a water treatment agent, in particular to a surface water treatment agent used for drinking water, which adopts multi-core aluminium-poly (silicon-phosphorus) aluminum chloride. The water treatment agent is prepared by taking industrial synthetic hydrochloric acid, aluminium hydroxide, calcium aluminate powder, phosphate rock powder or phosphorus pentoxide, silicon oxide and water as raw materials, and becomes liquid product after liquid residue reparation. As the molecular weight, the quantity of electric charge and the intensity of multi-core aluminium are all larger than those of poly-aluminum chloride, the coagulation property thereof is much better than that of the common poly-aluminum chloride, and the adding amount can be saved by 30 to 50 percent. The water treatment agent has good fluidity, stable performance and long-term storage. As the technology is simple and the cost performance is high, the water treatment agent can be industrially produced in larger scale.

A method, apparatus, and system for removing contaminants from a body of surface water. The method and apparatus may include tubular members such as hollow-fiber components. The tubular members have a reactive gas diffused through wall of the member.

Contaminants in the water can be removed when the reactive gas reacts with bacteria on the tubular member.

The invention relates to a composite flocculant and preparation and an application in surface water treatment thereof. The composite flocculant comprises the following components: aluminum sulfate, ferric chloride, diatomite and potassium permanganate, wherein the mass ratio of the aluminum sulfate, the ferric chloride, the diatomite and the potassium permanganate is 5:2:2.5-3.5:0.06-0.08. A preparation method comprises the following steps: respectively dissolving the aluminum sulfate, the ferric chloride, the diatomite and the potassium permanganate in water to prepare solution and obtain aqueous solution of all the components; and then mixing the aqueous solution of all the components according to the mass ratio of the aluminum sulfate, the ferric chloride, the diatomite and the potassium permanganate of 5:2:2.5-3.5:0.06-0.08 to obtain the composite flocculant. The composite flocculant provided by the invention can be used for treating meta-acid water quality with the pH value of 6.5-7.0, and is good in treatment effect and high in ecological security without secondary pollution. Moreover, the preparation method provided by the invention is simple, easy to operate and low in cost.

The invention relates to a compound type soil and groundwater circulation treatment device which is suitable for high permeability, high aquifer soil pollution groundwater pumping-treatment-reinjection groundwater circulation workplace. The device uses a combination of pumping, water treatment and groundwater reinjection, aiming at polluted soil with high permeability and high water content, to extract the polluted groundwater to a surface water treatment system, and the groundwater flows back to an injection well under the action of gravity after the treatment reaches the standard; meanwhile,during reinjection of the groundwater, groundwater in the groundwater aquifer is timely recharged, and hazardous accidents like ground settlement can be avoided as well; in addition, capillary waterremaining in the entrainment zone which is not easy to be drawn out is also leached or drawn out due to the supply of reinjected water, the remediation effect of groundwater and the aquifer is furtherenhanced, and complete remediation effect can be achieved.

An underground sewage closed-loop purification method comprises steps as follows: industrial water stored in a central water sump is conveyed to a pipeline through a central pump room and is conveyed to a mining area through the pipeline; the industrial water is used in the mining area to become working surface water, a part of the working surface water is sent to an emulsification pump hydraulic support after treated by a working surface reverse osmosis water treatment device and meeting the purified water standard, and the other part of the working surface water is used for mining area production, equipment cooling and roadway dust control. According to the underground sewage closed-loop purification method, underground sewage is recycled, mine production sewage emission and purchased water source cost are reduced, the sewage purification time is shortened, natural balance of surface water of the area is protected, pollutant emission is greatly reduced, secondary pollution to the environment due to sludge produced in an original surface water treatment process is effectively reduced, the environmental benefit is remarkable, the relationship between local governments and coal mining enterprises is improved, and sustainable and harmonious development of the mining area is promoted.

The invention discloses a high-turbidity surface water treatment device, and relates to the technical field of water treatment. The high-turbidity surface water treatment device comprises a treatmenttank; a cavity is fixedly formed in the treatment tank; the top of the treatment tank is fixedly connected with a water inlet pipe; a first flowmeter is fixedly mounted on the peripheral surface of the water inlet pipe; the inner wall of the cavity is rotationally connected with a filter core through a bearing; the bottom surface of the treatment tank is rotationally connected with a blow-off pipethrough a bearing; the upper end of the blow-off pipe fixedly communicates with the filter core; the bottom end of the water inlet pipe penetrates through the filter core and extends into the filtercore; the peripheral surface of the water inlet pipe is rotationally connected with the filter core through a bearing. Through the design of the filter core and a transmission motor, flocculated impurities in high-turbidity raw water can be rapidly separated out, after separation, the separated flocculated impurities can be rapidly discharged through a backwashing spray head, and the filter core is automatically cleaned, so that the automation degree of the device is effectively improved, and the device has a certain self-cleaning function.

The invention relates to a preparation method for a coagulant used for waste water and surface water treatment, in particular to a preparation method for a compound iron-zinc coagulant. The preparation method for the compound iron-zinc coagulant mainly solves the problems of the high cost, the poor adaptation and the like existing in an existing coagulant. The preparation method for the compound iron-zinc coagulant comprises the following steps that 1, an iron salt solution and an aluminum solution at the volume ratio of 1:1-10 are taken and mixed to be uniform for preparing a mixed solution, and then alkali liquor is used for adjusting the pH of the mixed solution to be 1.8-2.3; 2, oxidizing gas is fed into the mixed solution, then microwave treatment is performed for 10-60 min, seasoning is performed for above 12 hours, and a poly iron/aluminum compound colloid is obtained; 3, a certain amount of the poly iron/aluminum compound colloid is taken, a 2-10% zinc sulfate or zinc chloride solution is added into the taken poly iron/aluminum compound colloid, then a 2-10% poly dimethyl diallyl ammonium chloride solution is added into the obtained solution, and the compound iron-zinc coagulant is obtained. The preparation method for the compound iron-zinc coagulant has the advantages of being simple in technology, low in cost, good in coagulation effect and the like.

The invention discloses a steel galvanized layer surface water treatment agent. The steel galvanized layer surface water treatment agent consists of the following components in percentage by mass: 38-45% of water metal silicon acrylic resin, 5-10% of tetramethylsilane, 2-4% of ammonium metavanadate, 1-3% of sodium molybdate, 5-7% of coal tar, 8-10% of 98% concentrated sulfuric acid, 2-3% of 35% formalin, 1-2% of wetting agent, 1-2% of defoaming agent, 1-2% of potassium sorbate, and 23-25% of de-ionized water. The steel galvanized layer surface water treatment agent is excellent in material selection, adopts a scientific processing method to solve the problem of surface corrosion of a traditional steel galvanized layer, converts the surface rust to a useful passivation film, prevents the steel surface corrosion, is high in self-healing performance and excellent in construction performance, brakes at normal temperature or low temperature, is fast in drying, uses the de-ionized water as a dispersion medium, contains no chromic acid or dichromate, methylbenzene, ethylbenzene and dimethylbenzene, is low in VOC, is free of combustion, explosion and pollution, has the heavy metal content lower than the national compulsory standard, is free of pungent smell, is free of poison and harm to human bodies, and is prominent in environment benefit, economic benefit and social benefit.

The invention belongs to the field of water treatment equipment, and particularly relates to quick-acting rotary sand vertical flow circulating water treatment equipment. The equipment comprises a water treatment box, the water treatment box is internally provided with a stirring area, a reaction area and a settling area, the stirring area and the reaction area are fixedly connected with a vertical L-shaped partition plate, and two vertical baffles are fixedly connected between the reaction area and the settling area; one baffle is fixedly connected with the inner top wall of the water treatment box, and the other baffle is fixedly connected with the inner bottom wall of the water treatment box; a first motor is fixedly connected to the top wall, corresponding to the stirring area, of thewater treatment box, and a first vertical rotating shaft is fixedly connected to the output end of the first motor. The equipment has the advantages that the equipment can be widely used for mine water treatment occasions, micro-polluted surface water treatment occasions or other various occasions requiring flocculent sedimentation, and is wide in application range, small in occupied area and highin efficiency.

The invention provides a physical precipitation membrane separation device, belongs to the technical field of surface water treatment devices, and solves the technical problems of high cost and/or secondary pollution of coagulating sedimentation filtration treatment in the prior art. The physical precipitation membrane separation device comprises a sedimentation tank (1), a water supply assembly and a hollow fiber membrane device mounted in the sedimentation tank (1); the sedimentation tank (1) is communicated with the water supply assembly, the water supply assembly can convey surface water into the sedimentation tank (1), surface water is conveyed from bottom to top, and at least a surface water and sediment separation area can be formed in the sedimentation tank (1); and the hollow fiber membrane device is at least arranged at a height position where the separation area is formed in the sedimentation tank (1), and is used for filtering the separated surface water. The function of the surface water treatment device is perfected, and the requirements of people for low cost and high efficiency of surface water treatment are met.