30results about How to "Reduce water treatment costs" patented technology

The present invention comprises a method and composition using akaganeite, an iron oxide, as an ion adsorption medium for the removal of arsenic from water and affixing it onto carrier media so that it can be used in filtration systems.

A method and apparatus for treating water by the addition of coagulants comprising the steps of measuring the two parameters of the color and turbidity of the untreated water, determining the control parameter on the basis of the measurement results obtained and determining a control action based upon the determined control parameter and subsequently implementing the selected control action.

A well treatment fluid is provided having an acidic nanosilica dispersion and an alkanolamine. The nanosilica dispersion and the alkanolamine may form a gelled solid after interaction over a period. Methods of reducing water production using the well treatment fluids are also provided.

The invention discloses an organic-inorganic composite flocculant for the use of processing printing and dyeing wastewater and a preparation method and a utilization method thereof. The organic-inorganic composite flocculant takes soluble aluminum salt, ferric salt and corn starch as raw materials, and takes sulfate and calcium hydroxide as reaction auxiliary agent. The specific preparation procedures are that: firstly, a 6-20 percent of starch solution is made of the corn starch, then alkali liquor produced by a mass ratio of 6-15:1 between the starch and the alkali is added slowly and with even pace into the water of 40-90 DEG C and modified for 1-8 hours; then the modified starch solution is added into the aluminum salt and ferric salt solution by a mass ratio of 0.25-1:0.02-0.5:1 between the aluminum, iron and starch, the pH value is adjusted to be 1.0-4.0, and the composite flocculant is acquired after the complex reaction under a temperature condition of 40-90 DEG C for 2-5 hours. The flocculant preparation method of the invention is simple, and is convenient in utilization, with little dosing quantity of the reagents required, high removing rate of CODCr and high decoloration rate, easily biodegradable biodegradation.

The invention is a full-auto medium-water deep-purifying and regenerated water recovering device and technique, filtering the water to be processed by sand filtering tank, then filtering it by positive pressure biochemical water film filter, then sterilizing it in ozone generator, successively pumping the processed water by pump into aeration tank and synchronously irradiating the processed water by ultraviolet to be aerated and then be injected in the absorbing tank for absorption, and then injecting the absorbed water in the ultrafiltered water container; drawing and pressing the water in the ultrafiltering water container and then injecting in the nano filtering component for ion-level filtering, storing the produced pure water in the nano filtered water container to be used, and returning the strong water to the ultrafiltered water container for second treatment; the washing mode: opening the washing water inlet of the water distributor of the positive pressure biochemical film filter, and adding in pressure water to wash hollow external pressure ultrafilter film component, and then opening pressure sensing valve to discharge the sewage into the biochemical pond. If the device of the invention is linked with nano-filter water purifier to purify again, the water quality can reach drinking standard.

The invention relates to a three-dimensional landscape impounding reservoir system and a method for recovering urban roofing rainwater by using the same, relating to a landscape impounding reservoir and a method for recovering urban rainwater by using the same. The invention solves the problem of small application range of a traditional comprehensive urban rainwater utilization method. The three-dimensional landscape impounding reservoir system is a three-dimensional landscape impounding reservoir or is formed by connecting a plurality of three-dimensional landscape impounding reservoirs in series or parallel; each three-dimensional landscape impounding reservoir comprises an impounding reservoir and a landscape reservoir, and a drain hole, an overflowing hole and a water inlet are arranged at the side wall of the impounding reservoir which is communicated with the landscape reservoir through a communication device. The method comprises the following steps of: collecting rainwater to a high-density sedimentation tank for coagulation; then, filtering with a V-shaped filter tank and sterilizing with ultraviolet rays; and entering the three-dimensional landscape impounding reservoir system to finish the recovery of the urban roofing rainwater. The invention combines the rainwater recovery and the landscape by fully utilizing the urban space and can be used as an independent rainwater recovery and urban waterlogging prevention system or as an externally-hung circulating unit of a drainage system.

Disclosed is an energy-saving and eco-friendly filtration system which is capable of minimizing the amount of the energy required for the filtration, thereby remarkably reducing the cost of water treatment. The filtration system of the present invention comprises: a feed water tank for storing a feed water to be treated; a hollow fiber membrane module for filtering the feed water supplied from the feed water tank; and a filtrate tank for storing a filtrate produced by the hollow fiber membrane module, wherein the hollow fiber membrane module comprises a plurality of hollow fiber membranes for filtering the feed water, and the sum of head pressure of the feed water in the feed water tank and water pressure of the filtrate in accordance with siphon principle is higher than the threshold membrane pressure of the hollow fiber membranes.

The invention discloses a processing method of waste water generated in printing ink plastic package container cleaning. The processing method comprises following steps: material collecting and processing, neutralizing adjusting, plate-frame pressure filtration, flocculation deposition, filter residue drying, Electro-Fenton processing, and the like. According to the processing method, the processing technology is stable; less pollution is generated in or after processing technology; water source is saved; the product obtained through processing can be recycled; and resource full utilization isrealized.

A fluidized bed boiler plant and a method of combusting sulfurous fuel in the fluidized bed boiler plant, a furnace of which plant is provided with a fluidized bed of particles. Sulfurous fuel, CaCO₃-containing sulphur-binding agent and combusting air are introduced to the bed of particles, whereby fuel burns and generates flue gases and the sulphur-binding agent calcinates to CaO and binds SO₂ generated in the combustion. Energy is recovered to a heat exchange medium circulating in heat exchange tubes of a condensing heat exchanger arranged in a flue gas channel, and a water solution of acid condensing on outer surfaces is neutralized by mixing it in a mixing vessel to a CaO-containing ash from a plant, preferably, fly ash collected by a dust separator.

The invention discloses an organic sewage treatment complex reagent and a preparation method thereof. The preparation method of the complex reagent comprises the following steps: slowly adding ferric chloride to a polymeric ferric sulfate solution, and stirring for about 50 minutes; slowly adding ferrate to the mixed solution, and stirring; after the mixed solution is completely dissolved, slowly adding activated carbon and aluminum sulfate, and stirring for about 30 minutes; and after standing for half an hour, filtering to obtain the organic sewage treatment complex reagent. The product can be widely applied to the treatment of industrial sewage of food, textile, paper, leather, medicine and the like.

Provided are a separation membrane diagnosis method, a water processing method, a separation membrane diagnosis device, a water processing device, a separation membrane diagnosis program, and a storage medium on which the program is stored, with which the cost of water processing can be reduced by accurately ascertaining the state of a separation member used in water processing. The separate membrane diagnosis method includes: an acquisition step for acquiring an indicator expressing the state of a separation membrane that performs solid-liquid separation; a change-over-time recording step forrecording the change over time of the acquired indicator; an oscillation analysis step for analyzing the oscillations of the recorded change over time; and a determination step for determining the water permeability state of the separation membrane on the basis of the analyzed oscillations.

The invention provides a method for reducing polymerization degree in process of producing pulp through linters. The method comprises the following steps: treating the linters, bleaching and washing after bleaching, wherein an acid treatment step is arranged before or after the bleaching process, an acid treatment agent used in the acid treatment step is at least one acid, the amount of the acid treatment agent is 0.5-10 weight percent, the treatment temperature is 20-180 DEG C, the treatment time is 0.5-10 hours, the concentration of paper pulp is 3-30 weight percent; the amount of the acid treatment agent is inversely proportional to the treatment temperature; the amount of the acid treatment agent is inversely proportional to the treatment time; the treatment temperature is inversely proportional to the treatment time. The invention relates to the technical field of pulp for adhesive fibers, and the problems that the energy consumption in the process of reducing the fiber polymerization degree is high, the productivity is low, the treatment difficulty of black liquor is high and the water treatment cost is high in the prior art are solved.

The invention discloses a water circulation method and system for improving the surface quality of hot-rolled strip steel. Indirect cooling circulation water of an indirect cooling circulation water system is filtered and cooled to be recycled by a user of the indirect cooling circulation water system. Laminar flow cooling circulating water of a laminar flow cooling circulating water system is filtered and cooled to be recycled by the laminar flow cooling system. Direct cooling circulating water of a direct cooling circulating water system is filtered and cooled to be recycled by a user of thedirect cooling circulating water system; water replenishment of the direct cooling circulating water system uses drained water of the laminar cooling circulating water system and the indirect coolingcirculating water system and new water; and the direct cooling circulating water system discharges sewage. A reverse cross water supply process, namely new water-clean circulating water-turbid circulating water-laminar flow water-new water, is adopted, so that the comprehensive concentration multiple of the clean circulating water and the turbid circulating water can be more than 3, the laminar flow water quality requirement can be met, and hot rolled strip steel meeting different user requirements can be produced under the existing descaling condition.

The present invention reduces the water treatment cost while increasing and stabilizing the water recovery rate when a water recovery system using a separation membrane recovers discharged cooling water, such as blow water from a circulating cooling water system. This circulating cooling water system, into which a cooling water treatment agent is added, is provided with a water recovery system that uses a separation membrane to treat discharge water from the circulating cooling water system, and returns the treated water to the circulating cooling water system. In this circulating cooling water system, the concentration of the cooling water treatment agent in the circulating cooling water system is adjusted in accordance with changes in performance of the separation membrane in the water recovery system.

The invention discloses a plastic coating PVD technology. The plastic coating PVD technology comprises the steps that 1, surface cleaning treatment is conducted on a plastic substrate, and the cleanedplastic substrate is mounted on a clamp; 2, the plastic substrate on the clamp is subjected to magnetron sputtering ion plating treatment, and thus a titanium metal layer is deposited on the plasticsubstrate; 3, a magnetron sputtering ion plating technology is conducted, thus a copper metal layer, nickel layers, a chromium layer and a chromium carbide layer are deposited on the titanium metal layer in sequence; 4, the plastic substrate treated in the step 3 is activated or passivated; and 5, the plastic substrate treated in the step 4 is placed in pure chromium cylinder liquid to obtain thechromium layer. The metal film layer deposited through the plastic coating PVD technology meets the performance requirements of high adhesion, high binding force and good conductivity, and the productproduction yield is effectively increased.