42results about How to "Save on sewage charges" patented technology

The invention discloses a printing and dyeing wastewater processing system. The printing and dyeing wastewater processing system comprises a comprehensive wastewater preprocessing system, a depth reuse processing system and a sludge processing system, wherein the sludge processing system comprises a sludge pool; the comprehensive wastewater preprocessing system comprises an adjustment pool, a coagulative precipitation pool, a water discharging pool, a biological hydrolysis-acidification pool, an aerobic contact oxidation pool, a radial flow type secondary sedimentation pool and an intermediate water pool which are sequentially connected; the depth reuse processing system comprises an automatic backwashing sand filtration system, a pressure type ultrafilter membrane system, an RO membrane system and an RO reuse water pool which are sequentially connected; the sludge outlet of the radial flow type secondary sedimentation pool is communicated with the sludge pool; and the water outlet of the intermediate water pool is communicated with the automatic backwashing sand filtration system. According to the invention, the quality of the depth reuse water reaches outlet water quality standards; and the deepwater reuse can saves the water resource, and COD discharge is reduced year by year, so the content of discharged ammonia nitrogen can reach standards.

This invention relates to a reclaiming and processing method of charred waste water, which is used in coking industry. It utilizes method of combining physical, chemical processing and reversing osmosis membrane processing to process charring waste water. Its basic processing flow-sheet is: 1. Aerator aerates. 2. Adjust PH to 9-11, add denitrifying agent number one MgCl2.6H2O and number two Na2HPO4, mix,, add positive ion starch-dicyandiamide-formaldehyde-polymerized chloride ferric flocculating agent. 3. Filter with multi-medium filtrator. 4. Remove ammonia nitrogen with deaminizing nitrogen filtrator. 5. Reduction reaction process. 6. Carry out membrane processing by nanometer material compound membrane. Charring waste water processed by this invention has following characteristics: synthesize process cost is low. Operation is easy. Running is stable. It benefits for industrialization.

The invention relates to an electroplating reclaimed water recycling and treating system, comprising a control device, a preposed adjusting system, an ultrafiltering treating system and a reverse osmosis treating system, wherein the preposed adjusting system, the ultrafiltering treating system and the reverse osmosis treating system are mutually communicated, the preposed adjusting system comprises an ORP (Oxidation-Reduction Potential) adjusting system and a PH adjusting device; the ORP adjusting system comprises an ORP adjusting tank, a reducing agent metering pump, a reducing agent tank and a stirrer; the ulatrafiltering system comprises a water pump, a quartz sand filter, a precise filter and an ultrafiltering membrane assembly; and the reverse osmosis system comprises a water pump, an active carbon filter, a scale inhibitor adding device, a safety filter, a first section of high-pressure pump, a second section of high-pressure pump, a reverse osmosis membrane assembly and a water purified tank. By adopting a device combining membrane separation and the filter to treat the electroplating reclaimed water, the invention has the advantages of favorable treatment effect, low operation cost, convenient operation and capability of long-term continuous operation; and in addition, the invention meets the requirements of environmental protection and cleaning electroplating, not only reduces the pollution and saves the production cost, but also can fully utilize water resources and protect the environment.

The present invention relates to the field of water treatment, and discloses a method for treating sulfur-containing circulating cooling water. The method comprises: adding a chlorine-containing oxidizing agent and a composite corrosion inhibitor to sulfur-containing circulating cooling water, and controlling the total alkalinity of the sulfur-containing circulating cooling water at 100-200 mg/L, wherein the residual chlorine in the sulfur-containing circulating cooling water is 0.1-0.8 mg/L with the use amount of the chlorine-containing oxidizing agent, and the composite corrosion inhibitor contains a water-soluble zinc salt, an organic polymer type water treatment agent, and a phosphorus-containing corrosion inhibitor. According to the present invention, by controlling the total alkalinity and the residual chlorine and pouring the specific kind of the composite corrosion inhibitor in the matched manner, the corrosion of the sulfur-containing circulating cooling water can be effectively controlled, the carbon steel corrosion rate meets the technical requirement of less than 0.1 mm/a, and the carbon steel test tube adhesion rate meets the technical requirement of less than 20 mg/(cm2.month); and although the composite corrosion inhibitor containing the water-soluble zinc salt is used, the zinc salt deposition cannot cause the over-standard of the adhesion rate, such that the system does not require the complete replacement after the sulfur-containing material leaks so as to reduce the energy consumption.

The invention discloses an ERD + coal saturated steam catalytic combustion denitration device. The ERD + coal saturated steam catalytic combustion denitration device comprises a decomposing furnace, wherein a secondary air inlet is formed in the bottom of the decomposing furnace, and connected with a cement rotary kiln; the decomposing furnace comprises a reduction zone, a main burning zone, a reburning zone and a burning-out zone from the bottom up, a reduction zone saturated steam catalytic combustor and a reburning zone saturated steam catalytic combustor are respectively mounted in the reduction zone and the reburning zone; the reduction zone saturated steam catalytic combustor and the reburning zone saturated steam catalytic combustor are connected with a steam flow metering device, the steam flow metering device is connected with a steam surge tank, the steam surge tank is connected with a steam main pipe, the main burning zone and the burning-out zone are respectively connected with tertiary air and over-fire air, and are oxygen enriched combustion zones, to ensure that pulverized coal of the system is burnt out. The invention further discloses an ERD + coal saturated steam catalytic combustion denitration technique, and has the advantages of high denitration efficiency, simple and easily operated technological process, low operation cost, high system stability, optimized clinker production technology, energy-saving and consumption-reducing effects and the like.

The invention discloses a device and a process method for ERDIII cement plant ultra-low emission denitration. The device for ERDIII cement plant ultra-low emission denitration comprises a decomposition furnace and a powder denitration agent conveying unit, wherein the bottom part of the decomposition furnace is provided with a secondary wind inlet which is connected with a cement rotary kiln; thedecomposition furnace comprises a reducing zone, a main burning zone, a reburning zone and a burnout zone from bottom to top; the reducing zone is equipped with a reducing zone saturated steam catalytic burner; the reburning zone is equipped with a reburning zone saturated steam catalytic burner; the main burning zone is connected with tertiary wind; the burnout zone is connected with burnout wind; and the discharge pipe of the powder denitration agent conveying unit is connected with a denitration agent spray gun which is connected with the reburning zone. According to the invention, throughintroduction of a denitration catalyst, the usage amount of ammonia water for denitration is reduced; the cost is saved; ammonia escape is reduced; more economy and environmental friendliness are achieved; and due to reduction of ammonia escape, corrosion to subsequent equipment is avoided.

The invention relates to the field of water treatment and discloses a method of treatment of sulfur-containing circulating cooling water. The method includes the steps of: adding a chlorine-containing oxidant and a compound corrosion inhibitor to the sulfur-containing circulating cooling water, and controlling the total alkalinity of the sulfur-containing circulating cooling water to be 170-300 mg/L, wherein the use amount of the chlorine-containing oxidant ensures that the residual chlorine in the sulfur-containing circulating cooling water is 0.2-1 mg/L. The compound corrosion inhibitor comprises water-soluble zinc salt and an organic-phosphorus corrosion inhibitor. By controlling the total alkalinity and the residual chlorine and adding the compound corrosion inhibitor in a special type, corrosion of the sulfur-containing circulating cooling water is effectively controlled, wherein corrosion rate of carbon steel satisfies the technical demand of being less than 0.1 mm/a and carbon test tube adhesion rate satisfies the technical demand of being less than 20 mg/(cm<2>*month). Although the compound corrosion inhibitor containing the water-soluble zinc salt is employed, the adhesion rate does not exceed the standard due to deposition of the zinc salt, so that complete replacement of the system due to leakage of sulfur containing substances is unnecessary, thereby reducing energy consumption.

The invention discloses a mine treatment system and treatment method. The mine treatment system comprises an anti-soil-skid device, the anti-soil-skid device comprises a transverse plate, a vertical plate, a water spraying pipe and a water pipe, a clamping groove is formed in the top of the transverse plate, the transverse plate and the vertical plate are distributed in a crossed mode, the water spraying pipe is embedded in the top of the clamping groove, and spraying heads are inserted into the left side and the right side of the top of the water spraying pipe correspondingly. After the mining area ecological restoration and treatment project is comprehensively implemented, the vegetation area of the mining area is greatly increased, dust can be effectively absorbed, air is purified, the environment air quality is improved, wind prevention and sand fixation can be achieved, water and soil loss is reduced, soil moisture evaporation is reduced, the land utilization condition is improved, pollution of the mining area is reduced through the mining area ecological restoration and treatment project, the ecological environment of the mining area and the surrounding area is improved and restored, harmony and coordination of a natural ecological system of the whole mining area are promoted, the ecological environment of the mining area forms a virtuous circle, and a good living environment is created for the mining area and the surrounding people.

The invention belongs to the technical field of water quality stability, and particularly relates to a multifunctional water quality stabilizer formula and a production process flow. The production process flow of the multifunctional water quality stabilizer formula comprises the steps of firstly, dissolving and uniformly stirring desalted water, phosphoric acid and inositol hexaphosphate at 40-60DEG C to obtain a mixed solution; then sequentially adding 1-hydroxyethylidene-1,1-diphosphonic acid, 2-phosphonobutane-1,2,4-tricarboxylic acid, acrylic acid-2-methyl-2-acrylamidopropanesulfonic acid copolymer, phosphonohydroxyacetic acid and sulfonic acid into the mixed solution, performing stirring for 90 minutes or more, performing mixing, finally standing for 60 minutes, filtering and sub-packaging the solution to obtain the multifunctional water quality stabilizer. According to the multifunctional water quality stabilizer disclosed by the invention, the operation can be improved by multiple times on the basis of the original concentration multiple without generating a scaling phenomenon, the water intake and the water discharge of a whole plant can be reduced to a greater extent, the environmental protection pressure faced by external water discharge is greatly reduced, and a big problem is solved for enterprises with insufficient water sources or expensive water prices and poorer supplementary water quality.

The invention belongs to the field of waste water recycling and specifically discloses a treatment and recycling system for electroplating waste water. The reverse osmosis waste water treatment system includes a source water pool and a reverse osmosis device connected thereafter. The source water pool and the reverse osmosis device A waste water pretreatment device is also arranged between them, and the reverse osmosis device is respectively connected with a produced water tank and a concentrated water tank; the outer surface of the reverse osmosis device is provided with an explosion-proof membrane, and the two ends of the reverse osmosis device are provided with water outlets and the water inlet; the water outlet and the water inlet are provided with check valves; the concentrated water tank is also connected with a low-temperature decompression concentration device. Economical and effective treatment and reuse of circuit board wastewater, strict classification collection and treatment, and separate reuse of reusable cleaning wastewater are the key to ensuring the stable operation of the wastewater reuse system. The waste water sewage discharge fee is greatly reduced; it has great market prospect and economic value.

The invention discloses a low-cost maintenance-free electrochemical treatment technology device system for circulating water scale. The system comprises a circulating water tank; and the interior of the circulating water tank is provided with scale absorbing electrodes, a water level in the circulating water tank submerges the scale-absorbing electrodes, each scale-absorbing electrode is connectedwith one corresponding controller through one corresponding scale absorbing conductor, and the controllers are connected with an input power line. According to the system provided by the invention, an improved application method that the scale-absorbing electrodes are directly put into the water tank is adopted, so that the input costs are less, and full-automatic cleaning of the water scale adsorbed on the electrodes is fully realized, and maintenance-free operation in the operation process is realized; and workers do not need to extract the electrodes frequently, so that the electrodes canbe put in optimal treatment positions in the water tank, and better treatment effects can be realized.

The embodiment of the invention discloses production equipment for producing concentrated nitric acid through a magnesium nitrate method. By the improvement of a concentration tower, the wall flowingand vertical liquid dropping of a magnesium nitrate solution can be effectively avoided, the content of dilute magnesium nitrate can be greatly reduced, and therefore the concentration of tail water of magnesium formed by the condensation of acid vapour steamed by a magnesium nitrate steamer is 0.1% or less. By adding an acid separator, thorough gas liquid exchange between the magnesium tail waterand the acid vapour can be conducted in the acid separator to effectively reduce the concentration of the tail water of a tower. The magnesium tail water is used as production water and delivered toa circulation water tank to act as production supplying water. By the above improvement, the comprehensive utilization of the tail water of the tower and acid waste water of the magnesium tail water can be achieved, and zero emission of the acid waste water is achieved.

The present invention discloses a fresh cassava soaking and washing method which abandons the traditional cassava leaching process and sends a dry-method mud-removed and peeled cassava into a cassava washing tank to conduct four-stage soaking and washing. The dry-method mud removing and peeling process before soaking and washing can reduce the load in the subsequent steps of soaking and washing, etc., and save cleaning water. Cassava washing water is recycled and reused after the precipitation treatment and the water consumption is also reduced. The innovative structure design of the cassava washing tank can reduce production water and the waste water discharged volume. The purpose of terminal emission reduction is realized by the measures, the waste water discharged volume per ton of cassava starch is reduced to about 9.6-10 m<3> with a decrease by about 50%, and the entire production system has a high degree of automation, uses less labor and is easy to operate. By means of strengthening the control from the source, reducing the process emission, recycling and other means, the fresh cassava soaking and washing method improves the utilization of water resources, reduces the amount of pollutants to the maximum, and ultimately realizes balance between economic growth and environment-friendliness.