102results about How to "Low water turbidity" patented technology

The invention relates to a treatment system for waste salt recycling treatment. The treatment system comprises a waste salt carbonization pyrolysis system, a coke-containing salt slag dissolving and filtering system and an evaporation and desalination system which are sequentially connected with one another, wherein the waste salt carbonization pyrolysis system can be used for carrying out carbonization pyrolysis treatment on waste salt I composed of sodium chloride monomer salt, sodium sulfate monomer salt or the mixed waste salt; the coke-containing salt slag dissolving and filtering systemcan be used for carrying out the dissolution and filtration operation on the coke-containing salt slag obtained after the treatment by the waste salt carbonization pyrolysis system; and the evaporation and desalination system can be used for carrying out the evaporation and concentration, fractional crystallization and drying treatment on strong brine obtained after the treatment by the coke-containing salt slag dissolving and filtering system, so that salt products are obtained. According to the treatment system, with the industrial waste salt as a raw material, organic pollutants are removedfrom the waste salt, desalination treatment is carried out on mixed inorganic salt, and finally the industrial secondary salt products are produced, such as anhydrous sodium sulfates, sodium chlorides, sodium bicarbonate and other finished salt, so that the recycling of the waste salt can be realized; and the system can be applied to the waste salt recycling treatment.

The invention discloses a sewage treatment device and a method of a SBR process. The device is provided with a reaction tank; an aeration head is arranged at the bottom of the reaction tank; and the aeration head communicates with a blower fan. The sewage treatment device is characterized in that an overflowing weir is arranged on the upper edge of the reaction tank; a central water distributor is vertically arranged in the middle of the reaction tank; the lower end of the water distributor communicates with a water inlet pump; a sludge discharge pipe communicating with a sludge discharge pump is arranged at the bottom of the reaction tank. The method which utilizes the device comprises the following steps: firstly, feeding water and draining the water; secondly, aerating; and thirdly, depositing and draining sludge. The sewage treatment device and the method are suitable for the sewage treatment of the SBR process, have the advantages of simple structure, and low manufacture and running cost, and can be completely built under the ground, thereby having no effect on buildings on the ground and no pollution to ambient environment.

The present invention relates to a method for treating low-temperature low-cloudy water by utilizing high-density active sludge refluxing process, belonging to the field of water treatment technology. Said method includes the following steps: adopting external sludge refluxing system to make the chemical active sludge be lifted into feedwater pipe of reaction tank from sludge concentrated zone and mixed with primary water, then making them be passed through mechanical stirring mixing chamber and fed into reaction flocculating chamber, then adopting high-effective oblique plate precipitation process to produce complete, uniform and high-density alumen ustums from perforated wall to oblique plate precipitation zone and effectively implement sludge concentration so as to ensure stable water quality of discharged water.

A water treatment method combining flocculation, counter-current ozone air floatation and biofiltration in order and a device used in the method are disclosed. The device comprises a flocculation reaction zone, a counter-current ozone air floatation zone and a biofiltration zone which are connected in order. The flocculation reaction zone comprises two grades. One side of the first grade is connected to a water feeding pipe. A bottom outlet of the first grade is connected to an air floatation water distribution zone of the second grade. A water inlet pipe is disposed in the upper part of the counter-current ozone air floatation zone and connected to the air floatation water distribution zone. The top of the counter-current ozone air floatation zone is provided with a scum accumulating zone, the middle of the counter-current ozone air floatation zone is provided with a rectification filler, and the lower part of the counter-current ozone air floatation zone is provided with a plurality of air-dissolving water-releasing heads, a macroporous water collecting plate and a punched water collecting pipe. The water collecting pipe is communicated with a biofiltration water distribution zone. One side of the biofiltration zone is provided with the biofiltration water distribution zone, and the other side of the biofiltration zone is provided with a backwashing water collecting tank. The biofiltration zone is provided with an air-water backwashing system. The method and the device can effectively remove chroma, turbidness, microorganisms and various organic pollutants in water, and are suitable for drinking water treatment and sewage recovery and reutilization projects.

An environment-friendly flocculant for treating tap water The flocculant is characterized by using poly aluminium trichloride solution, natural polymer polysaccharide solution and auxiliary agent A solution in a coordinated way, wherein the poly aluminium trichloride solution has mass percent of 0.1-1%; the natural polymer polysaccharide solution is dilute acid solution with mass content of 0.2-2%; the auxiliary agent A solution is compound solution of sodium hydroxide, sodium bicarbonate, aluminum chloride, montmorillonite and water; and the montmorillonite accounts for 5% of the total mass of the compound solution. The best volume ratio of poly aluminium trichloride solution to natural polymer polysaccharide solution to auxiliary agent A solution used by the flocculant is equal to 0.5-5:3-10:5-10. The flocculant has large flocculation particles and high sedimentation velocity and has removal rate of raw water turbidity up to 98.09%. The raw water turbidity can be within 3NTU, the national standard, through one-time treatment when the raw water turbidity is between 70NTU and 100NTU. The content of aluminum ions in the effluent is 57.5% less than the content of aluminum ions in the traditional flocculants, the medicines for treating the tap water are little, and the flocculant does not contain the components harming the human bodies and has excellent performance and stable quality.

The invention relates to a water treatment system for a scenic spot, which comprises an efficient circulation filtering system and a strengthening dephosphorization system, and a dosing device, a blending device, a lifter, a backwashing system, a balance pool and the alike, which are matched with the efficient circulation filtering system and the strengthening dephosphorization system. By integrating the updated filtering technique, the absorption technique for removing ammonia nitrogen, the dephosphorization technique, the algal removal technique and the medium regenerating technique, the system is an integrated water purification circulation treatment system with high efficiency.

The invention discloses a sludge self-circulation dispersed sewage treatment device applicable to a directly-discharged water body and a method of the device, and belongs to the technical field of sewage treatment. The sludge self-circulation dispersed sewage treatment device comprises an integrated reactor, wherein the integrated reactor is internally divided into an anoxic area, a sewage ascending area, a sewage descending area and a settling area; a first isolation plate is arranged between the anoxic area and the sewage ascending area; a second isolation plate is arranged between the sewage ascending area and the sewage descending area; and a third isolation plate is arranged between the sewage descending area and the settling area. The device adopts a sludge self-circulation nitrogen and phosphorus intensification elimination method which is applied to the directly-discharged water body, and through anoxic denitrification and chemical dosing auxiliary dephosphorization, the requirements on water effluent of one-class B in Municipal Sewage Treatment Plant Pollutant Discharge Standard (GB / T18918-2002) can be met. The biological reaction pool is high in sludge concentration, needs no sludge backflow facility, low in effluent concentration, simple and convenient in operation in sewage treatment and diverse in function, and unattended operation in a sewage treatment station is realized.

The invention discloses a system and a method for treating and recycling regenerative waste liquid of macroporous denitrification resin. The system comprises a resin adsorption tank, a sodium chloridedosing tank, a waste liquid pool, a denitrification pool, a MBR (membrane bio-reactor), a recycling water tank, a nano-filtration membrane assembly, a reverse osmosis membrane assembly and a sodium hypochlorite generator; a macroporous denitrification resin adsorption technology is adopted to treat and send tail water in a sewage plant to the resin adsorption tank, a sodium chloride solution is utilized to regenerate, the regenerative waste liquid is collected into the waste liquid pool firstly, then enters the denitrification pool, followingly enters the MBR, and effluent flows back into therecycling water tank; the effluent is conveyed to the nano-filtration membrane assembly, and used for preparation of new resin regenerative liquid, concentrated water is partially drained out with the effluent in the resin adsorption tank, the rest concentrated water enters the reverse osmosis membrane assembly to be treated further, 98% and above dissoluble salt is retained, the produced water is directly drained out, the concentrated water directly enters the sodium hypochlorite generator to be electrolyzed, a disinfector is generated to disinfect and sterilize the effluent of the resin adsorption tank, and treatment and recycling of the regenerative waste liquid of the macroporous denitrification resin are achieved.

The invention relates to a compound tap water flocculating agent of environment-friendly chitosan quaternary ammonium salt and aluminum polychloride. The compound tap water flocculating agent is characterized by being composed of an environment-friendly chitosan quaternary ammonium salt solution and an aluminum polychloride solution. The compound tap water flocculating agent is prepared through the following steps: dissolving the chitosan quaternary ammonium salt to prepare the chitosan quaternary ammonium salt solution, adding glutaraldehyde to the chitosan quaternary ammonium salt solution while stirring, wherein the 1-4mol of glutaraldehyde is added into each liter of chitosan quaternary ammonium salt solution, and then reacting for 2-4h at a low temperature of 50-60 DEG C, and finally, slowly and dropwise adding the aluminum polychloride solution to the chitosan quaternary ammonium salt solution in the volume ratio of 1: (1-4), and finally, curing to obtain the compound tap water flocculating agent. The compound tap water flocculating agent of the environment-friendly chitosan quaternary ammonium salt and the aluminum polychloride is large in flocculated particles and high in settling speed; the removal rate of the compound tap water flocculating agent on the turbidity of raw water is 99.34%, which is slightly higher than a traditional flocculating agent; besides, the raw water having the turbidity in the range of 70-100NTU is treated once so that the turbidity can be up to the national standards and within 1NTU.

The invention discloses an environment-friendly magnesium-ion modified montmorillonite tap water flocculant. The flocculant is prepared by a chitosan liquid and a magnesium-ion modified montmorillonite liquid; the chitosan liquid is an acetic acid liquid containing 0.2-2 mass percent of chitosan, and the magnesium-ion modified montmorillonite liquid is prepared by the mixing of sodium hydroxide, sodium bicarbonate, magnesium chloride, montmorillonite and water according to the mass ratio of 1:1:(1-4):(5-8):(86-92). The flocculant of the invention has large flocculation particles and fast sedimentation rate, the removal rate of raw water turbidity reaches 98.09 percent, and for the raw water with the turbidity of 70-100 NTU, the once treatment can be within 3 NTU of the national standards; and the cost is low, and the flocculant has no ingredients harmful to human bodies, and has excellent performance and stable quality.

The invention relates to a high concentrated organic wastewater treatment system for a three-phase fluidization algae photobioreactor, which comprises a regulating reservoir and a reactor, wherein, the reactor comprises a reacting cylinder body, and a temperature detection device and a water quality detection device are arranged in the reacting cylinder body; a light source is arranged inside and / or outside the reacting cylinder body; the upper part of the reacting cylinder body is provided with an enlargement area, and the enlargement area comprises an effluent weir and an algae body outlet; the bottom of the reacting cylinder body is provided with a gas distribution device, and a frustum air inlet area is arranged below the gas distribution device; a water inlet and a water outlet are respectively provided with a sampling port and a flowmeter, and an air inlet is provided with a gas flow indicator. The system can be taken as a treatment device for high concentrated organic wastewater such as brewing wastewater, sugar wastewater and so on, is suitable for the treatment of small-scale high concentrated organic wastewater, is also suitable for the treatment of large-scale high concentrated organic wastewater, can realize the continuous operation of the process and the optimizing control of the whole process, and is easy to realize cooperative coupling operation with other treatment systems.

The invention discloses a high-COD (Chemical Oxygen Demand) phenol-containing sewage treatment method. Phenol is removed through pretreatment, suspended solids, organic pollutants, heavy metals and colloids are removed through coagulating sedimentation, so that the load of a subsequent working section is reduced. Through the electrochemical-photocatalysis-ozone synergy, the yield of active groupsin the treatment process is higher, and the oxidability is stronger. Mass transfer is promoted through an internal circulation structure, and the processing time is reduced. Residual phenols and otherorganic pollutants can be thoroughly removed, and meanwhile, the effect of releasing complex heavy metals is achieved. Most of heavy metal ions are removed through aeration-electric flocculation treatment, residual trace heavy metal, organic pollutants and part of inorganic salt in water are removed through filtration by a polyethyleneimine grafted nanofiltration membrane filter, and the water quality is improved. Finally, a two-stage reverse osmosis system is adopted for desalination, and the effluent quality reaches the standard of industrial reuse water.