摘要:
The present invention consists of an apparatus and method for supplying purified water to a faucet or other apparatus for use from a purification loop maintaining water in constant motion. The apparatus allows the user to select and withdraw the amount of water needed in a closely controlled fashion while any unused water remains in the loop where it is continually purified. A control valve with a manually rotatable spool permits the purified water to be adjustably tapped or withdrawn for various end uses.
摘要:
This invention relates to a method for treating various kinds of drain water and waste liquid which treatment now becomes a problem, for example, drain water and waste liquid containing hardly removable phosphorus and nitrogen, waste liquid containing organochlorine compounds such as tetrachloroethylene, etc., excretive drain water from a piggery containing organonitrogen compounds at a high level, waste liquid containing heavy metals such as lead, hexavalent chromium, cadmium and the like, drain water from dairy product plants, fishery processing plants, slaughterhouses, etc. which contains water soluble protein at a high level, drain water from pulp plants, photo developing waste liquid, car wash drain water containing a mixture of car polishing wax and detergent and the like by the use of porous ceramics provided with amorphous pore surfaces. Porous ceramics provided with amorphous pore surfaces are prepared by mixing clay, a pore forming material and water, molding into an arbitrary shape followed by drying, heating up an molded article thus dried, heating up an article temperature from normal temperature to 600 to 800° C. over a time period of 5 to 15 hours, maintaining this temperature for 3 to 7 hours and then calcinating at 1,200 to 1,500° C.
摘要:
The water purifying apparatus has a hollow container and a purifying material provided therein. In the purifying material, the ratio by weight of the bulky water-soluble non-crystalline substance and activate carbon is about 1:1.5. The hollow container is disposed in a water channel.
摘要:
This invention relates to wastewater treatment, process and preferred systems for practice of the process for the removal of organic and inorganic ingredients contaminating wastewater, thereby to allow the reuse or sewer discharge of water used in various manufacturing and other processes. The process of the invention typically involves initial filtration of the wastewater and contact with a paste mixture consisting of magnesium hydroxide, aluminum hydroxide, calcium carbonate, magnesium orthophosphate, ferric sulfate, sodium hydrocarbonate, and activated carbon, the activated carbon removing organics such as dyes and the like while the paste mixture precipitates inorganics for subsequent mechanical removal. After treatment with the paste mixture, precipitating compounds are added to precipitate other inorganics. Flocculating agents are then added for further clarification purposes. Material removal then occurs by mechanical extraction including filtration, settling and the like. Chlorine is preferably effectively removed from the system during chemical treatment through initial acidification, thereby to reduce the potential for formation of highly soluble chloride salts. The present processes are preferably continuous or batch processes and are effected through the use of preferred systems including filtration, chemical treatment and settling sub-systems.
摘要:
The invention relates to a method of controlling a biological wastewater purification plant, in which the wastewater is aerated in an activation tank in the presence of an activated sludge and, to influence the properties of the activated sludge, phosphorus is added under controlled concentration, which comprises measuring the phosphorus concentration in the activated sludge for the control of the phosphorus addition and controlling the phosphorus addition in such a manner that the phosphorus concentration in the activated sludge is greater than or equal to a lower limit and is less than or equal to an upper limit. By means of the method according to the invention, the effluent values of a biological wastewater purification plant can be optimized and the limit values in the effluent of a wastewater purification plant prescribed by the authorities can be complied with better than hitherto.
摘要:
A household wastewater purification system includes a first treatment tank having a household wastewater inlet in an upper part thereof, a photocatalytic decomposition treatment device having a photocatalytic material at least a part of which lies above the water surface, and an anaerobic treatment device. A second treatment tank is adjacent to the first treatment tank and isolated therefrom by a partition wall except a lower part thereof that is communicated with a lower part of the first treatment tank. The second treatment tank has an aerobic treatment device therein and a purified water outlet in an upper part thereof. A light-introducing part is provided above the first treatment tank.
摘要:
A method and system for the recuperation of the content of septic tank where the supernatant is returned to the septic tank after the recuperation of the sludge and of the scum is described herein. According to the method of the present invention, a major portion of the supernatant is advantageously recuperated from the top of the septic tank to the bottom thereof, and stored in a first reservoir of the system. The sludge, the remainder of the supernatant and the scum are then recuperated and stored in a second reservoir. The supernatant is filtered, either upon its recuperation or before its return to the septic tank. Finally, the filtered supernatant is returned to the septic tank.
摘要:
A waste disposal and recovery system for disposal of expanded polystyrene foam and recovery of a usable resin. The system includes a first tank and a second tank in flow communication. Within the second tank may be a plurality of settlement compartments with a filtration system. An organic solvent is used to dissolve the EPS foam which forms a waste solution. The waste solution is directed to the second tank where it is separated into resin and the organic solvent. The solvent may be recycled for use in dissolving more EPS foam while the resin may be removed for storage, shipment or sale.
摘要:
A water filter includes an egg-shaped housing formed from a lower shell and an upper shell. The lower shell is divided into an intake chamber and an outflow chamber. A filter or membrane is placed between the upper and lower shells.
摘要:
A septic system and method for the removal of nitrogen contaminants, such as nitrates and ammonia, from a wastewater effluent. The system comprises one or more zeolite tanks which contain a regenerable, granulated zeolite material to receive wastewater effluent from a septic tank and to capture the nitrogen contaminants to provide a treated, decontaminated effluent to flow out of the tank into a leach field. The system includes a secondary treatment.tank to reduce suspended solids and the biological oxygen demand (BOD) of the wastewater effluent prior to introduction into the zeolite tank. The system also includes an ion sensor to monitor the ammonium ion concentration in the system and to signal the need to regenerate the zeolite tank with saline water.