31results about How to "Meet the requirements of effluent water quality" patented technology

The invention discloses a denitrified sewage treatment device for an artificial wetland. The device comprises a sewage treatment pond. The sewage treatment pond comprises a denitrification layer (3) and a soil layer (4), wherein the soil layer (4) is arranged above or below the denitrification layer (3); the length of the sewage treatment pond is greater than or equal to 1m and the length-width ratio is greater than or equal to 3; the sewage treatment pond is provided with a water inlet and a water outlet; plants are planted on the soil layer (4); and the denitrification layer (3) consists of sulfur particles, plant stem and leaf fragments and gravels. The invention further discloses a denitrified sewage treatment method. The denitrified sewage treatment device disclosed by the invention has the advantages of low cost and good denitrification effect of sewage.

A cold-tolerant pseudomonas strain Den-05 belongs to the technical field of the biological engineering and environmental engineering, and is Pseudomonas psychrophilia Den-05, which is preserved in China General Microbiological Culture Collection Center (CGMCC) on March 27, 2012 with the preservation number of CGMCC NO.5942. Low-temperature aerobic denitrifying bacteria Pseudomonas psychrophilia Den-05 is screened from the natural environment by a microbial pure culture technique, so that the preparation of a biological denitrifying bacterial agent is realized and a high-efficiency denitrifying bacterial agent is provided for a biological enhancement system; besides, the winter denitrification effect of an urban sewage plant is improved in the control and regulation way of shortening the period of aeration by shortening the anaerobic period and the removal of nitrate nitrogen under the aerobic condition is realized; as a result, the water quality discharged is capable of meeting the requirements.

A membrane treatment method for treating trace antimony in drinking water comprises the following basic processes: after pre-precipitating and sterilizing pumped antimony-containing source water in a sterilization buffer pool, coagulating the source water in a coagulation pool and precipitating the source water in a precipitation pool, pressurizing the source water by a primary booster pump, filtering the source water by a multi-media filter and a precision filter, pressurizing the source water by a secondary booster pump and the sending the source water to a membrane treatment system to be treated. Nanofiltration or reverse osmosis membrane separation equipment is adopted for membrane separation, cross filtration technology is adopted for membrane filtration and physical cleaning and chemical cleaning are combined for cleaning the membrane separation equipment. Adopted for treating the drinking water contaminated by antimony, the membrane technology has high degree of automation, is mature and stable and ensures the energy consumption to be not more than 0.4kwh/m3, the working pressure of the membrane to be (0.15-0.75)MPa and the service life of the membrane to be not less than 3 years. When the content of antimony in the source water is (5-100)mu g/L, the content of the heavy metal antimony in the product water (permeate) after separation treatment is not more than 5mu g/L (GB5749-2006) and the contents of lead, mercury, arsenic and other heavy metals and pesticide residues in the tap water are simultaneously lowered, thus obviously promoting the water quality.

The invention discloses a sequencing batch type combined biofilm integrated apparatus for treating high concentration organic wastewater, wherein a tank body is provided with two submerged biological film reaction zones, the center of the tank body is an anaerobic submerged biological film reaction zone, the periphery of the tank body is an aerobic submerged biological film reaction zone, the anaerobic submerged biological film reaction zone is closed, the two reaction zones are provided with half-soft fiber fillings internally and a a underwater propeller on the bottom, the packing of the anaerobic submerged biological film reaction zone is provided with a underwater aeration apparatus on the bottom.

The invention relates to a preparation and installation method of an anti-floating filter plate of an upward flow suspension filter material filter pool. The method is characterized by comprising the steps of assembling a mold to prepare the anti-floating filter plate and installing the anti-floating filter plate. The anti-floating filter plate comprises an anti-floating filter plate body of a rectangular reinforcing steel bar concrete plate structure. Upper and lower rabbets are formed at the opposite ends of the two side ends of the anti-floating filter plate. The cross section of the upper rabbet is in a dovetail groove shape, the cross section of the lower rabbet is in a dovetail shape matched with the dovetail groove shape of the upper rabbet, and two adjacent anti-floating filter plate bodies form a dovetail type plate slot through engagement of the upper and lower rabbets; a plurality of filter head sleeves are preformed in the axial direction of the anti-floating filter plate. The anti-floating filter plate has the advantages that the rabbet structure is adopted, the problem that formwork supporting is difficult in the plate slot construction process is solved, and the problems of water leakage, material leakage, difficult pouring and difficult formwork supporting are solved; the anti-floating effect is well achieved by taking full advantage of the weight of the anti-floating filter plate and the pressure relief effect of filter holes.

The invention discloses a synergistic treatment device for degradation-resistant organic waste water and a method thereof, and belongs to the field of waste water treatment. The synergistic treatment device comprises a primary microwave waste water treatment unit and a secondary ultrasonic wave and electrocatalytic oxidation synergistic waste water treatment unit. In the microwave waste water treatment unit, primary waste water treatment is realized through physical and chemical reactions between microwaves and pollutants, the waste water obtained after microwave treatment enters the ultrasonic wave and electrocatalytic oxidation synergistic waste water treatment unit, on the premise that the waste water quality is improved by microwaves and conditions suitable for secondary treatment are created, secondary treatment on the waste water pollutants is achieved by means of strong-oxidizing free radicals synergistically generated by ultrasonic waves and electrocatalytic oxidation, and continuity of secondary treatment and high efficiency of electric energy utilization are ensured through an electrode surface layer clearing function of the ultrasonic waves. Secondary pollution is avoided in the whole waste water treatment process.

The invention relates to the technical field of water purification equipment, in particular to a water purifier, a water purification system and a water quality adjusting method. The water purification system comprises a water inlet channel, a filtering channel, a water outlet channel, a wastewater channel, a booster pump, a regulating valve, an inlet water quality detection unit and an outlet water quality detection unit. The composite filter element comprises at least two filter element units connected in parallel, the opening degree of the adjusting valve is adjustable, the adjusting valve is suitable for adjusting the flow of the corresponding filter element unit, the inlet water quality detection unit is arranged on the upstream of the composite filter element, and the outlet water quality detection unit is arranged on the water outlet channel and used for detecting the water quality. According to the water purification system provided by the invention, the inlet water quality detection unit and the outlet water quality detection unit are arranged, if the outlet water quality does not reach the standard, the detection result of the outlet water quality detection unit can be fed back, and the control unit can adjust the opening degree of the adjusting valve according to the detection result of the outlet water quality detection unit; therefore, the water in the water outlet channel meets the water quality requirement of the outlet water.

The invention discloses a deep treatment method of petrochemical engineering organic wastewater difficult to biodegrade. Secondary treatment effluent of a petrochemical engineering sewage treatment device is treated with a catalytic ozonation and integrated biological filter combination technology, and the method specifically comprises the steps as follows: a coagulant and a coagulant aid are added to secondary treatment effluent for a precipitation reaction; then the sewage enters an ozonation reactor and is subjected to an oxidation reaction with ozone under the action of fixed bed catalytic filler, and the purposes of decolorizaiton and organic matter decomposition are achieved; finally, a high-load biological filter procedure and a variable-pore filter procedure are performed through an integrated biological filter, and after the sewage is treated by biological membranes attached to and growing on the surface of biological filter filler and is filtered by variable-pore filler, biodegradable organic matter in ozone decomposed water can be removed. The method is simple in process and convenient to operate, emission of pollutants in the petrochemical engineering sewage can be effectively reduced, the effluent quality requirement of existing secondary treatment process upgrading and reconstruction is met, and the economic benefit is increased.

The invention discloses a sewage treatment device with multi-mode operation, and belongs to the field of sewage treatment systems. Four groups of fixed tank bodies are arranged in parallel, and a fixed flow guide wall, a movable flow guide device, an aeration device and the like are respectively arranged at two ends of each group of fixed tank bodies. The volume distribution of different reaction tanks can be realized by the movable flow guide device, so that the optimal nitrogen and phosphorus removal treatment effect is achieved. Aeration devices are distributed on the whole tank body, and whether aeration of each area is started or not is controlled through valves on the aeration devices, so that the aerobic/anoxic/anaerobic state is realized. A step-feed multi-stage A/O operation mode is adopted, so that biological denitrification is enhanced, a carbon source in sewage is utilized to the greatest extent, internal reflux is not needed, and energy consumption is reduced. The system sludge concentration is higher than that of a traditional biochemical pool. Multiple modes can be alternately operated according to the water quality condition, and the number of the alternate operation modes can be as high as 7; the operation modes are diversified, switching is flexible and convenient, and the system can adapt to great changes of inflow water quality and meet the requirements of outflow water quality.

The invention relates to a magnetic collagen modified cationic flocculant and a preparation method thereof. The magnetic collagen modified cationic flocculant is mainly prepared by combining a magnetic fluid with waste tanning collagen which is taken as a raw material. The magnetic collagen modified cationic flocculant has the beneficial effects that a magnetic material is applied to preparation of the flocculant, and a solid and liquid separation effect of a flocculation process is enhanced by the effect of a magnetic field, and thus the quality of water discharged after the flocculation process is improved, the water treatment running cost is lowered, and water content of floccules is reduced. Resource utilization of tanning wastes is realized, and pollutant emission caused by tanning is reduced. A magnetic collagen hydrolysis product is subjected to graft copolymerization and cationic modification, and a modified product has good flocculent properties. The magnetic collagen modified cationic flocculant is easy to degrade by microorganisms in environment, short in existence time in the environment and low in residual quantity.

The invention discloses a purification treatment system for tail water of a sewage plant and a construction method of the purification treatment system, which belong to the technical field of comprehensive treatment of water environments, and solve the problems of high investment and operation cost, secondary pollution and unsatisfactory purification in the existing tail water treatment mode. The system comprises a water distribution well and a constructed wetland; an aeration device and a submersible sewage pump are arranged in the water distribution well; the output end of the submersible sewage pump is connected with a first water distribution pipe; the first water distribution pipe leads to the constructed wetland; a floral pipe is arranged at the bottom of the constructed wetland and communicated with a water collecting well; the upper portion of the water collecting well is connected with a water outlet pipe; a control valve is arranged on the water outlet pipe;water quality detection equipment is arranged at the front end of the control valve on the water outlet pipe; a submersible pump is arranged in the water collecting well; the output end of the submersible pump is connected with a second water distribution pipe; a nozzle is arranged above the constructed wetland and connected with the second water distribution pipe; and the control valve and the submersible pump are respectively connected with the water quality detection equipment. The system has the advantages of good purification effect, low investment and operation cost, no secondary pollution and high automation degree.

The invention discloses a method for removing low-concentration Pb (II) by combining a heavy metal absorbent LAC/PAA with a traditional water treatment process. A low-cost heavy metal removal absorbent (LAC/PAA) is prepared, and compared with activated carbon for a common water purification plant (pH= 6-10), the surface acidic groups of LAC/PAA are increased (pH= 4.8), so that the function of absorbing and removing heavy metals is fulfilled. Aiming at raw water polluted by Pb(II), the water quality of raw water polluted by Pb (II) is analyzed firstly. If Pb (II) is less than or equal to 50 mug/L, LAC/PAA adsorption is used directly to meet the requirements of WHO water quality standard. If 50 mu g/L (Pb (II) is less than 300 mu g/L, the heavy metal absorbent LAC/PAA needs to be combinedwith with the traditional water process; the adsorbent is used for water treatment, so that actual factors of water plant running can be fully considered, emergency feeding is facilitated, and purposes of solving low-concentration heavy metal emergency pollution and saving resources are achieved.

A disclosed purification device for domestic sewage treatment comprises a box body, a built-in pull rod is arranged on one side of the box body in a penetrating mode, a push plate is fixedly connectedto the other side of the built-in pull rod, a sealing ring is arranged on the outer side of the push plate, a blocking plate is arranged in the middle of the built-in pull rod, and a first filter screen is arranged in the blocking plate; and a fixed plate is fixedly connected to the middle of the upper portion of the first filter screen, and the built-in pull rod penetrates through the fixed plate. Through the arrangment of the build-in pull rod, the push plate can be moved by pulling the built-in pull rod; through a second filter screen arranged in the push plate, precipitated impurities canbe pushed; through an arranged electric push rod, a movable plate can be opened, and one side of the movable plate is inclined, so that an opening is formed in the upper portion of a first discharging opening, impurities are discharged; and through an arranged first water outlet valve, water flow can be pumped into a reaction bin to be precipitated and then discharged from a second water outlet valve.