11results about How to "Clear water" patented technology

The invention relates to the technical field of sewage treatment, in particular to a backwashing multi-medium filtering device, which comprises a washing assembly, a tank body, a drain outlet, a water outlet and a water conveying pipe, the pushing assembly comprises a filtering layer, a servo motor, a washing column arranged in the filtering layer, a moving column arranged on the inner wall of the washing column and a spray washing column arranged on the inner wall of the washing column; a servo motor drives a lower connecting disc to rotate slowly, the connecting disc drives a water pipe to rotate below a filter layer, water flow is sprayed into the filter layer from the bottom of the filter layer through a water spraying opening in the surface of the water pipe, and filter materials at the bottom of the filter layer are washed in cooperation with backwashing water flow; the washing columns in the filter layers rotate together, the spray washing columns on the surfaces of the washing columns can be intermittently opened, vortexes are sprayed outwards, the filter materials on the layers are further washed, impurities are separated from the filter materials, finally, the impurities are discharged through reverse impact water flow at the bottom, and the sewage treatment efficiency is improved.

The utility model discloses a waste water treatment device for aluminum profile production, which relates to the technical field of waste water treatment, and adopts the technical scheme that the waste water treatment device comprises a device base, a waste water treatment tank and a precipitation separation device, the waste water treatment tank is fixedly arranged outside the device base, and the precipitation separation device is movably arranged inside the waste water treatment tank; a conical collecting disc is fixedly installed on the inner wall of the waste water treatment tank, and a rapid precipitation separation assembly is fixedly installed outside the conical collecting disc. By accelerating the fusion of the precipitant and quickly salvaging the precipitate and the floating object, the wastewater can be quickly treated and purified, the pollution to the environment can be effectively reduced by quickly treating and purifying the wastewater, the adverse effect of the wastewater on the water body, soil and air is reduced, and the health of an ecological system is protected.

The utility model relates to the technical field of aquaculture, and discloses a fresh king crab temporary rearing system capable of improving the survival rate, which comprises a temporary rearing pond, a circulating water treatment system, an oxygenation system, a low-temperature control system, a water quality on-line monitoring system and a PLC (programmable logic controller) control system, the circulating water treatment system comprises a microfilter, an external circulating water pump, a decolorizing and degassing filter box, a protein separator, a biological purification barrel, an ultraviolet sterilizer and an ozone machine; the decolorizing and degassing filter box is adopted, harmful gas such as CO2 and H2S in water can be removed, the water quality is clear through the adsorption effect of corallite and activated carbon, the requirement for the living environment of the king crabs is met, the survival rate is greatly increased, the air oxygenation mode and the pure oxygen oxygenation mode are adopted, the requirement for low-density temporary culture of the king crabs can be met, and the requirement for low-density temporary culture of the king crabs can be met. Therefore, the system can greatly improve the survival rate of the king crabs in the temporary rearing process of the king crabs and ensure the vitality of the king crabs.

This invention discloses a copper ion scavenging agent suitable for a wide pH range, its preparation method, and its application. The scavenging agent comprises the following components by mass: 10-30 parts trithiocarbonate, 5-20 parts N,N-dimethylaminodithiocarbamate, and 1-5 parts sodium citrate. The preparation method is as follows: (1) Add water to a sodium citrate solution and stir to prepare a buffer solution A; (2) Add trithiocarbonate and N,N-dimethylaminodithiocarbamate to buffer solution A, stir until completely dissolved, and filter to obtain the final product. This invention has the advantages of a wider pH range, copper removal effect that varies with water quality, stable copper removal effect, fast reaction speed, and rapid floc settling. After treatment, the concentration of each copper ion is less than 0.1 mg / L, the iron content is less than 0.0001%, and the lead content is less than 0.0001%, meeting the environmental emission requirements.

The present invention provides an intelligent water purification system combining a sodium hypochlorite generator with a curtain membrane, comprising a connected water inlet pipe and a tee pipe, wherein one output end of the tee pipe is connected to an intelligent electrodialysis device through a water inlet pipeline, and the other output end of the tee pipe is connected to the intelligent electrodialysis device through a sterilization pipeline, and the intelligent electrodialysis device is also connected to a water outlet pipe; a filter with a built-in curtain membrane and a sodium hypochlorite generator are provided on the sterilization pipeline, and the sodium hypochlorite generator is arranged after the filter.

The present application relates to a kind of layer filter specially used for flocculation, flocculation in sewage after the separation of flocculation body, with the pool body of top opening, the inside of pool body is separated to form water storage area and water storage area by partition;Water storage area is equipped with water inlet pipe, and electromagnetic valve and water inlet quantity regulating valve are arranged on water inlet pipe;Water storage area is equipped with water outlet hose, and one end of water outlet hose is water inlet, and float is fixedly connected around water inlet;The other end of water outlet hose is water outlet, and water outlet is located outside pool body and is communicated with outside;Water outlet hose is equipped with water outlet quantity regulating valve.The water storage area is transversely arranged with at least one layer of filter bag, and the filter bag is made of monofilament filter cloth;One end of filter bag is equipped with water inlet, and the water inlet is communicated with the water outlet end of water inlet main pipe through transition pipe;Partition bottom is equipped with differential pressure gauge.The present application has simple structure, low filtration pressure, fast filtration speed, clear water outlet, and is especially suitable for small-scale sewage flocculation body separation.

This invention discloses a polyaluminum chloride-based composite flocculant and its preparation method, belonging to the field of water treatment agent technology. The preparation method includes: acid activation of natural attapulgite to obtain acid-modified nano-attapulgite crystal nuclei; hydrolysis of liquid polyaluminum chloride, basic zirconium chloride, and ferric chloride to form clusters, followed by the addition of polyepoxysuccinic acid of a specific molecular weight for dynamic shielding to obtain a shielding liquid; dispersing the crystal nuclei into the shielding liquid; and slowly adding carboxymethyl chitosan solution and anionic polyacrylamide solution sequentially at a specific rotation speed to obtain the liquid composite flocculant. This invention overcomes the problem of easy gelation of high-concentration liquid flocculants by strictly controlling the dosing sequence and the dynamic spatial shielding of polyepoxysuccinic acid; by utilizing the synergistic effect of zirconium-aluminum bimetallic flocculant and the specific chelation of carboxymethyl chitosan, excellent low-temperature and low-turbidity water removal rate is achieved while strictly controlling residual aluminum; combined with acid-modified heavy crystal nuclei, the sedimentation rate of flocs is significantly improved.

The application discloses a process for treating dyeing wastewater by a membrane method, and comprises the following steps: pretreating the dyeing wastewater, including grating, adjusting pool, coagulation and sedimentation, and filtration, to obtain filtered wastewater; the filtered wastewater enters a security filter to be subjected to secondary filtration, to obtain secondary filtered wastewater; the secondary filtered wastewater enters an NXF membrane system, and the wastewater is divided into two streams, one of which is a concentrated solution which does not reach a set concentration, and the other of which is a permeate; the concentrated solution which does not reach the set concentration returns to a front end inlet to be subjected to filtration in the NXF membrane system again; when the concentration reaches the set concentration, the concentrated solution enters a concentration storage tank to be subjected to other treatment; and the permeate enters subsequent treatment. The application aims at solving the technical problem of poor treatment effect of dyeing wastewater.

The invention discloses a device and a method for synchronously concentrating urban sewage and producing high-quality water. The device comprises an FO-ED coupling system consisting of an FO unit and an ED unit, the FO unit comprises a feed liquid tank, an FO membrane assembly and a concentration chamber; the FO membrane assembly comprises an FO membrane; the ED unit comprises a direct-current power supply, an ED membrane assembly, a light chamber and an electrode liquid tank; and the ED membrane component comprises an anion-cation exchange membrane and a titanium-coated ruthenium electrode plate connected with the anion-cation exchange membrane. According to the invention, water molecules spontaneously permeate from the feed liquid part with high water chemical potential to the draw liquid part with low water chemical potential in the FO process to form a municipal sewage concentrated solution at the same time, and the diluted draw liquid is re-concentrated in the ED process to obtain clean effluent at the same time. FO is used as a pre-process of ED, a large number of organic pollutants and inorganic ions prone to scaling in urban sewage are intercepted, and the problem of ED membrane pollution is effectively relieved. According to the invention, long-term stable urban sewage concentration, high-efficiency recovery of the draw solution and production of high-quality water are synchronously realized.

A small sewage treatment equipment, including the closed cylinder, the top of the cylinder is equipped with water inlet, the middle part of the cylinder is equipped with upper barrier net, lower barrier net, the upper barrier net and the lower barrier net form the filling space, and a plurality of suspended filler blocks are distributed in the filling space, the cylinder is provided with aerator, which is connected with air source and located below the lower barrier net, the cylinder is provided with sludge discharge port, water outlet, and the sludge discharge port is located below the lower barrier net, and the water outlet is located between the lower barrier net and the upper barrier net, and the water outlet is provided with water grate.The utility model discloses simple structure, convenient operation can peel off the active sludge of aging inactivation filler carrier, guarantees the treatment efficiency and stability.

The application provides a treatment method of epitaxial high-concentration arsenic-containing wastewater, comprising the following steps: adding calcium hypochlorite into the epitaxial high-concentration arsenic-containing wastewater, and stirring and aerating; then adding ferric chloride, and stirring and aerating; then using lime milk solution to adjust the pH of the system to 6.5-7, and continuing to stir and aerate; performing pressure filtration to obtain primary arsenic-containing wastewater; adding calcium chloride solution and ferric chloride solution into the primary arsenic-containing wastewater obtained by pressure filtration, using lime milk solution to adjust the pH of the system to 6.5-7, and then standing, taking supernatant to test, discharging the supernatant after reaching the standard; if the supernatant does not reach the standard, continuously adding calcium chloride solution and ferric chloride solution for cyclic treatment until the supernatant reaches the standard and is discharged. The method has the advantages of small reagent dosage, low cost, high arsenic removal rate, high stability of arsenic-containing hazardous waste and the like, and after being treated by the method, the arsenic content is lower than 0.3 mg / L, which meets the national discharge standard.